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Journal articles on the topic 'Progressive Cavity pump'

Author: Grafiati

Published: 4 June 2021

Last updated: 5 February 2022

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1

Ward, Peter R. B., William G. Dunford, and David L. Pulfrey. "Performance of small progressive cavity pumps with solar power." Canadian Journal of Civil Engineering 14, no. 2 (April 1, 1987): 284–87. http://dx.doi.org/10.1139/l87-041.

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A small progressive cavity pump, rated at about 900 W, has been assembled and tested as part of a photovoltaic-cell-powered water pumping system. Torque-speed relationships for the progressive cavity pump, not readily available in published engineering journals, were measured and are presented. The pump was extremely well suited to lifting groundwater for small (domestic) supplies with solar power because it was capable of producing the full design head over a very wide range of speeds. In addition, the progressive cavity pump was robust, and unlike most other positive displacement pumps, would tolerate small concentrations of silt and sand in the water without damage. Very many of these pumps are already in use in parts of Africa and other developing areas, and excellent prospects exist for operating progressive cavity pumps with solar-energy-powered drives. Key words: pump, solar power, groundwater, water, water supply, solar, well, hydrology, hydraulic.

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2

Karthikeshwaran, Ramasamy. "Progressive Cavity Pump: A Review." Biosciences Biotechnology Research Asia 11, SE (October 30, 2014): 231–37. http://dx.doi.org/10.13005/bbra/1415.

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3

Mrinal, KR, and Abdus Samad. "Performance prediction of kinetic and screw pumps delivering slurry." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 232, no. 7 (March 22, 2018): 898–911. http://dx.doi.org/10.1177/0957650918760161.

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Transporting slurry is a difficult task and industries use a kinetic or centrifugal pump or a screw or progressive cavity pump to deliver it. On the other hand, approximation models can help predicting performance and avoiding the expensive experiments of pumps with slurries. In this work, bentonite-based slurries were prepared and pumped by a centrifugal pump and a progressive cavity pump. The experimental facilities were developed in-house and artificial neural network-based approximation models were developed to predict performances. The approximation models say that it can eliminate the expensive testing to draw performance curve a pump. The relative merits of the pumps show that the progressive cavity pump has a better capability to handle the slurries or high viscosity fluids.

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4

Karthikeshwaran, Ramasamy. "Leakage Analysis of Metal Progressive Cavity Pump." Biosciences Biotechnology Research Asia 11, SE (October 30, 2014): 357–61. http://dx.doi.org/10.13005/bbra/1431.

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5

Baroiu, Nicuşor, Georgiana-Alexandra Moroşanu, Virgil-Gabriel Teodor, and Nicolae Oancea. "Roller Profiling for Generating the Screw of a Pump with Progressive Cavities." Inventions 6, no. 2 (May 14, 2021): 34. http://dx.doi.org/10.3390/inventions6020034.

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Progressive cavity pumps are used in industry for the circulation of high viscosity fluids, such as crude oil and petroleum products, sewage sludge, oils, salt water, and wastewater. Also known as single screw pumps, these pumps are composed of a single rotor which has the shape of a rounded screw, which moves inside a rubber stator. The stator has an double helical internal surface which, together with the helical surface of the rotor, creates a cavity that moves along the rotor. The movement effect of the cavity inside the stator is the movement of the fluid with a constant flow and high pressure. In this paper, an algorithm for profiling the rollers for generating the helical surface of the pump rotor with progressive cavities is proposed. These rollers are constituted as tools for the plastic deformation of the blank (in case the pump rotor is obtained by volumetric deformation) or for its superficial hardening.

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6

Mohamed Iyad Al, Naboulsi, Niculae Napoleon Antonescu, Alin Dinita, and Marius Morosanu. "Tribological Characterization of Some Elastomers Used at Progressive Cavity and Piston Pumps." MATEC Web of Conferences 318 (2020): 01016. http://dx.doi.org/10.1051/matecconf/202031801016.

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The progressive cavity pump (PCP) is a positive displacement pump, consisting of a polished helical-shaped rod (rotor) turning inside a helical elastomer (stator). PCP has many advantages, but the pump durability is manly limited by elastomer behavior. At piston pumps (PP) used for drilling mud piston has an elastomer sleeve that also limit the durability. Standards like ISO 15136.1 & 2 for pumps developed by manufactures and users’ committees provides requirements for design, quality design verification etc., but do not define specifically the elastomer for the stator or the metal used for the rotor. Each PCP and PP manufacturer used specific materials at pump construction. The aim of this study was to evaluate the tribological behavior of some elastomers such polybutadiene rubber (BR), polybutadiene acrylonitrile rubber (NBR), polybutadiene acrylonitrile carboxylate (XNBR) and polyamide (PA 6) in couples with hard chromium coated steel, nitride steel and cast iron. Were determined friction coefficients and wear on 2 types of friction couples (plane to plane and shoe to plane) on two tribometers and some mechanical proprieties (Young’s modulus, ultimate tensile strength, elongation, hardness).

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7

Zhou, Xian Jun, and Zhao Sheng Feng. "Numerical Simulation of Single Metal Progressive Cavity Pump." Advanced Materials Research 655-657 (January 2013): 372–75. http://dx.doi.org/10.4028/www.scientific.net/amr.655-657.372.

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The motion law of single metal progressive cavity pump was studied through motion simulation. Then, the finite element analysis software ANSYS was used to analyze the distribution characteristics and the influencing factors of the contact pressure. It was pointed out that the single metal progressive cavity pump has the ability to withstand high temperature and the differential pressure mainly influences the wear. At last the reasonable range of the clearance was given.

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8

Smith, Peter Mark. "Progressive cavity pump tubing drain valves: operator-savings illustration." APPEA Journal 60, no. 2 (2020): 677. http://dx.doi.org/10.1071/aj19023.

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Three case studies show how three progressive cavity pump (PCP) operators used Zenith® (Baker Hughes) tubing drain valves to protect problematic PCPs from blockage and damage, reducing downtime and avoiding cost of backflush operations. The efficient solids management system incorporated in the Zenith PCP tubing drain valve (PCP-TDV) reliably safeguards pumping equipment from damage or blockage caused by descending solids when the pump is shut down, eliminating unplanned downtime and costly equipment replacement. Addressing the failings of alternative valves, the Zenith PCP-TDV effectively reduces the requirement for well workover, preventing pump-off, increasing uptime and lift system run-life, even in heavy oil and high viscosity fluid operations. The Zenith PCP-TDV provides an innovative solution to costly pump damage, while preventing recirculation and simplifying backflush operations. The addition of backflush capability is designed to allow the pump rotor to be retracted and reset without running out of hole. A further addition specific to the coal seam gas market is the inclusion of a tubing pressure-activated, single-use locking piston, so as to allow external pressure to be subjected to the PCP-TDV without pumping being open, thus allowing the string to be set with no well fluid ingress into the production string and pump before operation.

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9

Kawamura, Takeshi. "Energy-saving and High-efficient Progressive Cavity Pump." JAPAN TAPPI JOURNAL 63, no. 8 (2009): 909–12. http://dx.doi.org/10.2524/jtappij.63.909.

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10

Guo, Zhong Feng, Shan Shan Li, and Hui Guo. "Developing Overview of Progressing Cavity Pump System." Advanced Materials Research 753-755 (August 2013): 2770–73. http://dx.doi.org/10.4028/www.scientific.net/amr.753-755.2770.

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Electrical Submersible-motor-driven Progressive Cavity Pumping (ESPCP) oil extraction technology has the advantages of sample technology and management convenience. ESPCP is suitable for the viscous, containing sand, high gas oil ratio oil extraction. Developing history of ESPCP is introduced and the structure and principle are analyzed. The advantages of ESPCP are compared with other oil extraction technology. At last, developing status is discussed and the developing trend is investigated.

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11

Nguyen, K., T. C. Nguyen, and E. Al-Safran. "Modeling the performance of progressive cavity pump under downhole conditions." Journal of Petroleum Science and Engineering 198 (March 2021): 108121. http://dx.doi.org/10.1016/j.petrol.2020.108121.

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12

Sidorkin, D. I., and K. S. Kupavykh. "Justification on Choosing Screw Pumping Units as Energy Efficient Artificial Lift Technology." ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations 64, no. 2 (April 9, 2021): 143–51. http://dx.doi.org/10.21122/1029-7448-2021-64-2-143-151.

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The paper analyzes the main techniques and technologies of oil fluid recovery in the context of energy consumption, significantly rising over the latest decade. It is recognized that the number of publications in the area of energy efficiency is growing steadily. Currently Russian oil and gas industry are facing the task of accelerating reduction of energy consumption while preserving, or even increasing, production rates. The task is complicated by the fact that the majority of deposits in Russia either have already entered (primarily, Volga-Ural region) or are now entering (West Siberia) their last stage of exploration, whereas new deposits in East Siberia are only being brought into production. Furthermore, a lot of new deposits, which provide for high recovery rates, are profitable a priori as at the first stage of exploration they do not need any artificial lift due to their free flow production without any oil well pumps. However, there is a significant share of new deposits with low-permeability reservoirs, which require either a system of reservoir pressure maintenance or periodic hydraulic fracturing. At the same time deposits at the late stages of exploration, apart from the use of pump units, systems of reservoir pressure maintenance and hydraulic fracturing, require regular repair and restoration, measures against salt and heavy oil sediments, mechanical impurities, flooding, etc., which all has a negative effect on well profitability. In order to solve these problems, the authors review existing methods and calculate specific energy consumption using various pump systems for hypothetical wells, varying in yield. According to the research results, it has been revealed that from the point of view of energy efficiency, it is desirable to equip low- and low-yield wells with sucker rod progressive cavity pump units, medium-yield ones – with electric progressive cavity pumps driven by permanent magnet motor, medium- and high-yield wells – with electric progressive cavity pumps or electric submersible pumps driven by permanent magnet motor, depending on the characteristics of the pumpedout oil fluid.

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13

Martin, Jonathan. "Recirculation to improve progressive cavity pumps (PCPs) run life." APPEA Journal 57, no. 2 (2017): 639. http://dx.doi.org/10.1071/aj16117.

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Progressive cavity pumps (PCPs) are widely used as a method of artificial lift, commonly found in coal seam gas (CSG) wells in Queensland. One of the major challenges with PCPs is the pump torqueing up due to solids and not being able to restart, which results in lost production and the need for intervention with a flush-by unit or service rig. Up to 30% of PCPs in the Surat Basin can be down at any given time on account of this issue. We have engineered a solution whereby fluid is produced using the existing PCP, a desander is used to remove solids and the clean fluid is reinjected down the annulus, via hollow rods or by a capillary string. This complete system has many benefits: it removes sands and solids from the wells produced water stream; and it reinjects clean water down the well bore, which serves the dual purpose of diluting the concentration of downhole solids and, via the introduction of additional clean fluid, allows the PCPs to be sped up, thus increasing the velocity to aid in lifting the solids out of the well. This can all be done at a fraction of the cost of intervention with a flush-by unit or service rig. Lessons learned from field trials to date include: (1) how to account for loss of reinjected fluid in early field trials, which was solved by the introduction of hollow rods; (2) increasing PCP speed for 1 h per day to clear the solids, as a preventative flush; (3) verification of solids issues in CSG wells in the Surat Basin; and (4) quantification of produced solids.

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14

NISHIMURA, Kenji, Eiji UETSUJI, and Yoshiro IWAI. "Study on Slurry Wear of the Stator for a Progressive Cavity Pump." Proceedings of Conference of Hokuriku-Shinetsu Branch 2019.56 (2019): L042. http://dx.doi.org/10.1299/jsmehs.2019.56.l042.

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15

Fisch, Philipp, Martin Holub, and Marcy Zenobi-Wong. "Improved accuracy and precision of bioprinting through progressive cavity pump-controlled extrusion." Biofabrication 13, no. 1 (December 18, 2020): 015012. http://dx.doi.org/10.1088/1758-5090/abc39b.

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16

Zhou, X. Z., G. C. Shi, G. Cao, C. L. Sun, Y. He, H. Liu, and H. A. Wu. "Three dimensional dynamics simulation of progressive cavity pump with stator of even thickness." Journal of Petroleum Science and Engineering 106 (June 2013): 71–76. http://dx.doi.org/10.1016/j.petrol.2013.04.014.

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17

Chen, Jie, He Liu, Fengshan Wang, Guocheng Shi, Gang Cao, and Hengan Wu. "Numerical prediction on volumetric efficiency of progressive cavity pump with fluid–solid interaction model." Journal of Petroleum Science and Engineering 109 (September 2013): 12–17. http://dx.doi.org/10.1016/j.petrol.2013.08.019.

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18

Mrinal, K. R., and Abdus Samad. "Leakage flow correlation of a progressive cavity pump delivering shear thinning non-Newtonian fluids." International Journal of Oil, Gas and Coal Technology 16, no. 2 (2017): 166. http://dx.doi.org/10.1504/ijogct.2017.086299.

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19

Samad, Abdus, and K. R. Mrinal. "Leakage flow correlation of a progressive cavity pump delivering shear thinning non-Newtonian fluids." International Journal of Oil, Gas and Coal Technology 16, no. 2 (2017): 166. http://dx.doi.org/10.1504/ijogct.2017.10006989.

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20

Liu, Han Wu, Lian Dong Huang, Shun Qin Fan, and Bo Hu. "Computer Simulation of Filling Process and Temperature Distribution of Oil Pump Cover in Solidification Process." Applied Mechanics and Materials 423-426 (September 2013): 1894–97. http://dx.doi.org/10.4028/www.scientific.net/amm.423-426.1894.

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Oil pump cover, as a part of the oil pump, is generally formed by adopting aluminum die casting molding, and required for good internal and external quality. In order to improve the oil pump cover forming quality, the paper first simulates the thermal equilibrium of die-casting mold in the forming process by finite element analysis, and obtains the temperature curves when mold works for 10 consecutive cycles, and determines that the thermal equilibrium temperature of die-casting mold is 260 °C. And then, based on the simulation results of filling and solidification in the forming process by ProCAST software, the shrinkage and cavity appear in the larger wall thickness of the casting. Meanwhile, by simulating the die-casting processes of the oil pump at different pouring temperatures, there are the least of shrinkage and cavity when the pouring temperature setting 640 °C. The results show that: it can take some methods to achieve the progressive solidification, and can reduce or eliminate the possible shrinkage and cavity, such as shortening the distance between sprue, runner and inner runner and die casting to reduce the casting heat loss, or adding cooling system to accelerate the cooling rate in the larger wall thickness of the casting. This analysis provides theoretical basis for the actual casting production of oil pump covers.

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21

Zhang, Bing Yi, Shuai Wang, Gui Hong Feng, and Xiang Cheng. "Study on Low-Speed High-Torque PMSM for Surface-Drive System of Progressive Cavity Pump." Advanced Materials Research 516-517 (May 2012): 1643–46. http://dx.doi.org/10.4028/www.scientific.net/amr.516-517.1643.

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This paper focus on a surface-mounted low-speed high-torque permanent magnet synchronous motor (PMSM) for progressive cavity pump wells. To minimize torque ripple, several methods is used such as proper pole-arc coefficient and fractional-slot windings. In the motor design, a non-linear finite element analysis (FEA) method is conducted to compute the performance of the motor. Through the simulation and experiment, the result shows that the design of low-speed high-torque PMSM is valid and presents a good performance.

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22

Chen, Jie, FengShan Wang, GuoCheng Shi, Gang Cao, Yan He, WeiTao Ge, He Liu, and HengAn Wu. "Finite element analysis for adhesive failure of progressive cavity pump with stator of even thickness." Journal of Petroleum Science and Engineering 125 (January 2015): 146–53. http://dx.doi.org/10.1016/j.petrol.2014.11.011.

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23

Villasante, José A., Luciano O. Mantovano, Hugo A. Ernst, and Matias G. Pereyra. "Development of a new hollow sucker rod family for rotating pumping (progressive cavity pump systems)." Journal of Petroleum Science and Engineering 134 (October 2015): 277–89. http://dx.doi.org/10.1016/j.petrol.2015.02.005.

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24

Saghir, Fahd, M. E. Gonzalez Perdomo, and Peter Behrenbruch. "Application of machine learning methods to assess progressive cavity pumps (PCPs) performance in coal seam gas (CSG) wells." APPEA Journal 60, no. 1 (2020): 197. http://dx.doi.org/10.1071/aj19044.

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In Queensland, progressive cavity pumps (PCPs) are the artificial lift method of choice in coal seam gas (CSG) wells, and this choice of artificial lift production stems from the ability of PCPs to better manage the production of liquids with suspended solids. As with any mechanical pumping system, PCPs are prone to natural wear and tear over their operational life, and with the production of coal fines and inter-burden, the run life of PCPs in CSG wells is significantly reduced. Another factor to consider with the use of PCPs is their reliability. As per the CSG production data available through the Queensland Government Data Portal, there are approximately 6400 wells operational in the state as of December 2018. This number is expected to grow significantly over the next decade to meet both international and domestic gas utilisation requirements. Operators supervising these wells rely on a reactive or exception-based approach to manage well performance. In order to efficiently operate thousands of PCP wells, it is pertinent that a benchmark methodology is devised to autonomously monitor PCP performance and allow operators to manage wells by exception. In this study, we will cover the application of machine learning methods to understand anomalous PCP behaviour and overall pump performance based on the analysis of multivariate time-series data. An innovative time-series data approximation and image conversion technique will be discussed in this paper, along with machine learning methods, which will focus on a scalable and autonomous approach to cluster PCP performance and detection of anomalous pump behaviour in near real-time. Results from this study show that clustering real-time data based on converted time-series images helps to pro-actively detect change in PCP performance. Discovery of anomalous multivariate events is also achieved through time-series image conversion. This study also demonstrates that clustering time-series data noticeably improves the real-time monitoring capabilities of PCP performance through improved visual analytics.

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25

Nguyen, Kien, Tan C. Nguyen, and Eissa Al-Safran. "Corrigendum to “Modeling the performance of progressive cavity pump under downhole conditions” [J. Petrol. Sci. Eng. 198 (2021) 108121]." Journal of Petroleum Science and Engineering 199 (April 2021): 108370. http://dx.doi.org/10.1016/j.petrol.2021.108370.

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26

Dehka, Mohammad Rostami, and Iulian Nistor. "DIGITAL OIL FIELD FROM DATA TO REAL - TIME DECISION MAKING -SMART WORKING FOR OPERATIONS EFFICIENCY." Romanian Journal of Petroleum & Gas Technology 2(73), no. 1 (2021): 5–15. http://dx.doi.org/10.51865/jpgt.2021.01.01.

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Digital Oil Field (DOF) project in OMV Petrom aims to remotely monitor, troubleshoot and optimize operations and maintenance data and activities in a modern manner, and to foster value creation through increased integrated and reliable performance data availability to skilled professionals in order to facilitate the right decisions. DOF Project started as a pilot in an oil field, covering a large area of automated wells and facilities. The pilot field is operating around 400 wells equipped with PCP (progressive cavity pump) and more than 70% automated facilities consisting of: 14 MPSs (Meter Point Skids), 2 PMANs (Production Manifolds) and 1 OMS (Oil Metering Station), all connected to SCADA systems.

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27

Bintarto, Bambang, Rizky Rahmat Auliya, Riza Andhika Mahendra Putra, Afif Surya Pradipta, and Rafli Arie Kurnia. "Production Data Analysis and Sonolog for Determining Artificial Lift Design and Well Characteristic." Journal of Petroleum and Geothermal Technology 1, no. 1 (July 17, 2020): 28. http://dx.doi.org/10.31315/jpgt.v1i1.3321.

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Tarakan Field, North Kalimantan is a part of PT. Pertamina EP Asset 5. The Tarakan Field has 5 structures in the form of Pamusian, Juata, Sesanip, Mangatal, and Sembakung. The Tarakan Field has 57 production wells and 6 injection wells. The wells at Tarakan field are produced with artificial lifts in the form of Sucker Rod Pump (SRP) totaling 25, Hydraulic Pumping Unit (HPU) totaling 11, Electric Submersible Pump (ESP) totaling 19 and Progressive Cavity Pump (PCP) totaling 2. The determination of artificial lifts is carried out by the design of well characteristics and production history. The design at Tarakan Field was carried out with an artificial lift in the form of ESP (Electric Submersible Pump). ESP is used according to reservoir and formation characteristics in Tarakan Field. Water Control Diagnostic Plot is a method used to analyze the effect of control on produced water. Water Control Diagnostic plot is plot between WOR and WOR derivative vs time. The plot was carried out on a log-log scale. The plot on the Water Control Diagnostic Plot is then analyzed against the graph created by the KS Chan. So from the analyzed plot, it is found whether or not there is a problem in the well at Tarakan Field. The results of the graph analysis on the well at Tarakan Field on the chart show that the field does not indicate a problem. Keywords: chan plot; design; esp; production

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28

Nguyen, Kien, Tan C. Nguyen, and Eissa Al-Safran. "Corrigendum to ‘Modeling the performance of progressive cavity pump under downhole conditions’ Journal of Petroleum Science and Engineering, Volume 198, 2021, 108121." Journal of Petroleum Science and Engineering 202 (July 2021): 108450. http://dx.doi.org/10.1016/j.petrol.2021.108450.

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29

Martin, Jonathan, and Robert Carmichael. "Lined tubing performance in CSG wells operated in Australia." APPEA Journal 59, no. 2 (2019): 796. http://dx.doi.org/10.1071/aj18039.

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One of the major challenges with progressive cavity pump (PCP) applications in Australia is the production of highly concentrated solids. Large volumes of solids entering the production string cause both high torque issues and holes in tubing, resulting in lost production and the need for intervention with a flush-by unit or service rig. On account of these issues, it is reported that up to 40% of PCPs in the Australian coal seam gas (CSG) fields can be down at any given time. Coho Resources has introduced lined tubing as an engineered solution. The proprietary lining the tubing has a lower friction factor compared with conventional steel tubing, resulting in lower operational torque and reduced operating costs. The added lubricity from the lower friction coefficient in lined tubing allows solids to flow more freely to surface where they are captured and discarded from the system. Lined tubing allows producing companies to realise bottom-line operational savings in several ways. The largest of course is minimal downtime and reduced well service costs due to the elimination of our previous tubing related problems. With reduced work over costs, savings become visible very quickly. Rig costs, bottom hole pump, tubing and sucker rod replacement costs are all reduced. Application of lined tubing in CSG wells in Australia results in: • 15–25% less torque on the drive system, • An 70% increase in run times between workovers (lined tubing versus un-lined tubing), and • Compatibility with existing field equipment and handling methods.

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30

Robello Samuel, G., and Ken J. Saveth. "Optimal Design of Progressing Cavity Pumps(PCP)." Journal of Energy Resources Technology 128, no. 4 (February 7, 2006): 275–79. http://dx.doi.org/10.1115/1.2358142.

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The drive for energy independence has created a window of opportunity for innovations in oil recovery. New artificial lift methods like progressing cavity pumping have been successfully applied to downhole pumping applications. The multilobe pumps are also making inroads into the industry to be used under different operating conditions. Although the design has been mainly based on empirical standards and trial and error modifications, a more phenomenally optimum design of the pump is required to achieve a high efficiency standard. The optimal relationship between the pitch and the diameter of the housing is obtained to achieve a maximum flow rate for multilobe pumps.

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31

Liu, Yi Xiang, and Xiang Yang Jin. "Application of Chaos PSO Algorithm in the Decelerator Optimization." Key Engineering Materials 392-394 (October 2008): 532–37. http://dx.doi.org/10.4028/www.scientific.net/kem.392-394.532.

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The problems of slow convergence speed and being prone to converge to minimum were solved by combining the characteristics of chaos dynamics in the paper, whose characteristic of combining chaos optimal ergodicity and particle swarm optimal rapidness conquered deficiency of the traditional PSO algorithm. The proposed algorithm used for the decelerator of the electric submersible progressive cavity pump (ESPCP) design optimization compared with that of which was based on the standard PSO and genetic algorithm. By use of property mentioned, optimization searching could be carried out, firstly a series of chaos variables were produced as same number as optimization variable, then chaos was lead into optimization variable by the way of similar to carrier, that made the optimization variable into a chaos state, at the same time, the extent of chaos emotion was magnified to the value range of optimization variable, at last searched by chaos variable, searching technique based on chaos had more superiority than other searching technique. The results showed that the proposed algorithm was superior to the other two algorithms with a better astringency and stability. This article offered a new optimization method in machine.

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32

Bernard, F. R., and D. J. Noakes. "Pumping Rates, Water Pressures, and Oxygen Use in Eight Species of Marine Bivalve Molluscs from British Columbia." Canadian Journal of Fisheries and Aquatic Sciences 47, no. 7 (July 1, 1990): 1302–6. http://dx.doi.org/10.1139/f90-149.

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Pumping characteristics and oxygen utilization for Solemya reidi, Yoldia thraciaeformis, Chlamys hastata, Mytilus edulis, Crassostrea gigas, Clinocardium nuttallii, Saxidomus giganteus, and Mya truncata were studied. Pressures were recorded using a Yale A79 spinal tap needle inserted in the pallial cavity or siphonal aperture. Pumping volumes were determined through particulate analysis using a Model B Coulter counter and oxygen consumption by standard Winkler titration modified for small samples. The species chosen were selected to represent progressive increases in gill complexity and siphon length. The minimum pressure differential across the gill (20 Pa) was observed for Y. thraciaeformis while the maximum pressure gradient (600 Pa) was recorded for M. truncata. Pumping rates varied from 1.41 L∙h−1∙g−1 (Y. thraciaeformis) to 4.71 L∙h−1∙g−1 (C. hastata) and species with siphons tended to pump at lower rates. The deeply burrowing M. truncata consumed 3.5 times as much oxygen (0.63 mL O2∙h−1∙g−1) as S. reidi (0.18 mL O2∙h−1∙g−1) which inhabits anoxic environments. For all species, the metabolic cost of pumping was less than 1% of the total oxygen uptake.

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33

Tan, Chaodong, Song Wang, Hanwen Deng, Guoqing Han, Guanghao Du, Wenrong Song, and Xiongying Zhang. "The Health Index Prediction Model and Application of PCP in CBM Wells Based on Deep Learning." Geofluids 2021 (April 24, 2021): 1–13. http://dx.doi.org/10.1155/2021/6641395.

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Aiming at the problems of the current production and operation status of the progressive cavity pump (PCP) in coalbed methane (CBM) wells which cannot be timely monitored, quantitatively evaluated, and accurately predicted, a five-step method for evaluating and predicting the health status of PCP wells is proposed: data preprocessing, principal parameter optimization, health index construction, health degree division, and health index prediction. Therein, a health index (HI) formulation was made based on deep learning, and a statistical method was used to define the health status of PCP wells as being healthy, subhealthy, or faulty. This allowed further research on the HI prediction model of PCP wells based on the long short-term memory (LSTM) network. As demonstrated in the study, they can reflect both the change trend and the contextual relevance of the health status of PCP wells with high accuracy to achieve real-time, quantitative, and accurate assessment and prediction. At the same time, the conclusion gives good guidance on the production performance analysis and failure warning of the PCP wells and suggests a new direction for the health status assessment and warning of other artificial lift equipment.

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34

Sendler, Andreas, and Karl R. Aigner. "Intra-arterial, abdominal chemoperfusion with chemofiltration in the treatment of progressive stage IV gastric cancer." Journal of Clinical Oncology 33, no. 3_suppl (January 20, 2015): 141. http://dx.doi.org/10.1200/jco.2015.33.3_suppl.141.

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141 Background: Treatment of patients (pts.) with progeressive stage IV gastric cancer remains a therapeutical problem. Survival of the pretreated pts. is low and the therapeutic options are sparse. In this situation, locoregional therapeutic strategies could be an option. Methods: 28 pretreated pts. (17 male, 11 female, mean age 59 y.) after resection and at least second line systemic chemotherapy were included in a phase II study of isolated abdominal perfusion and subsequent chemofiltration. All pts. had liver metastases (mets.), 50% (n = 14) had peritoneal carcinomatosis with malignant ascites. No pat. had cerebral, pulmonal or bone mets.. After insertion of a venous and arterial 21 ch. stop flow catheter via a femoral access, the v. cava was blocked beneath the right atrium, the arterial catheter was blocked above the celiac trunk. The thighs were blocked by pneumatic cuffs. Chemotherapy consisted of 35 mg/m2 cisplatinum, 20 mg/m2 adriamycin and 12 mg/m2 mitomycin q 3 weeks till progress or dead. The agents were administered via the arterial access, followed by 15 min of hypoxic abdominal perfusion via an external pump, followed by chemofiltration for 45 min. The procedure was done under general anaesthesia. Primary endpoint of the study were overall survival, secondary endpoint was control of the ascites. Results: A total of 92 cycles (mean 3.25) were administered. Toxicity was low with leucopenia CTC grad I in 9 pts., gastrointestinal disorders grad II in 8 pts. and surgical complications grad II in 40 % of the pat. (lymphatic fistula). In 9/14 (65%) of pts. with ascites, the ascites was at least controlled or vanished. One year survival was 28.6% (Kaplan-Meier), 2 year survival was 11.4%. Median survival was 6 months. Conclusions: Intra-arterial, isolated abdominal chemoperfusion with consecutive chemofiltration in heavily pretreated patients with gastric cancer metastasized to the abdominal cavity is a valuable option for palliative treatment with low side effects. In 65% of the affected pts., malignant ascites was controlled sufficiently, ameliorating the quality of life.

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Lin, Yen-Heng, Chih-Ching Wu, Wan-Ling Chen, and Kai-Ping Chang. "Anti-p53 Autoantibody Detection in Automatic Glass Capillary Immunoassay Platform for Screening of Oral Cavity Squamous Cell Carcinoma." Sensors 20, no. 4 (February 11, 2020): 971. http://dx.doi.org/10.3390/s20040971.

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The incidence of oral squamous cell carcinoma (OSCC), which is one of the most common cancers worldwide, has been increasing. Serum anti-p53 autoantibody is one of the most sensitive biomarkers for OSCC. Currently, the most commonly used method on clinical screening platforms is the enzyme-linked immunosorbent assay, owing to its high specificity and repeatability. However, conducting immunoassays on 96-well plates is typically time consuming, thereby limiting its clinical applications for fast diagnosis and immediate prognosis of rapidly progressive diseases. The present study performed immunoassays in glass capillaries of 1-mm internal diameter, which increases the surface to volume ratio of the reaction, to shorten the time needed for immunoassay. The immunoassay was automated while using linear motorized stages and a syringe pump. The results indicated that, when compared with the 96-well plate immunoassay, the glass capillary immunoassay decreased the reaction time from typical 120 min to 45 min, reduced the amount of reagent from typical 50 µL to 15 µL, and required only simple equipment setup. Moreover, the limit of detection for glass capillary anti-p53 autoantibody immunoassay was 0.46 ng mL−1, which is close to the 0.19 ng mL−1 value of the conventional 96-well plate assay, and the glass capillary method had a broader detection range. The apparatus was used to detect the serum anti-p53 autoantibody concentration in clinical patients and compare its results with the conventional 96-well plate method results, which suggested that both of the methods detect the same trend in the relative concentration of serum anti-p53 autoantibody in healthy individuals or patients with OSCC.

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Iwata, Toru. "Advantages of the Flexishaft for Progressing Cavity Pump in Paper and Pulp." JAPAN TAPPI JOURNAL 56, no. 11 (2002): 1575–79. http://dx.doi.org/10.2524/jtappij.56.1575.

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37

Zhu, Duan Yin, Jian Ning Xu, Yan Xiong Gao, and Wen Jie Lv. "Applied Research on the Closed-Loop Control of Oil Production System with Progressing Cavity Pump." Applied Mechanics and Materials 248 (December 2012): 119–23. http://dx.doi.org/10.4028/www.scientific.net/amm.248.119.

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It aimed to dynamic change of oilfield productivity, maked sure that the progressing cavity pump is working in a highly efficient region. It combined variable frequency conversion technology and dynamic liquid level height control technology, the closed-loop control of oil production system with progressing cavity pump is made up of rotation-speed and torsion sensor, stepless motor, frequency converter, PLC and progressing cavity pump. The result show that the system can control the pump submergence depth by adjusting the rotation-speed and torsion of polish rod, and make sure the pump working in a highly efficient region finally. This system also can increase recovery efficiency and pump service life.

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38

Xu, Jun, Ren Gong, Xin He, and Xin Lei Li. "Embedded Monitoring System of Progressing Cavity Pump Operating Conditions." Applied Mechanics and Materials 236-237 (November 2012): 844–49. http://dx.doi.org/10.4028/www.scientific.net/amm.236-237.844.

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The monitoring system for progressing cavity pump operating conditions based on dual-microcomputer is developed to fit the electronic parameters measurement characteristic and requirement of progressing cavity pump. By measuring the electronic parameters of progressing cavity pump driving motor and combining the internal losses of electrical motor, the torque and speed of progressing cavity pump polished rod are calculated accurately, to make correct decision for the oil wells working condition. Using the modular design method, the acquisition, storage, human-computer interaction and other necessary hardware is presented. The program flow charts of host-slave is designed respectively, Parameters calibration and communication module are mainly elaborated, in the meanwhile, computer’s data processing and fault diagnosis software are designed. The designed system has been successfully applied in oilfield, realizing the monitoring of screw pump’s working condition,ensuring the efficient operation of oil production system.

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39

Shakor, Pshtiwan, Shami Nejadi, and Gavin Paul. "A Study into the Effect of Different Nozzles Shapes and Fibre-Reinforcement in 3D Printed Mortar." Materials 12, no. 10 (May 26, 2019): 1708. http://dx.doi.org/10.3390/ma12101708.

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Recently, 3D printing has become one of the most popular additive manufacturing technologies. This technology has been utilised to prototype trial and produced components for various applications, such as fashion, food, automotive, medical, and construction. In recent years, automation also has become increasingly prevalent in the construction field. Extrusion printing is the most successful method to print cementitious materials, but it still faces significant challenges, such as pumpability of materials, buildability, consistency in the materials, flowability, and workability. This paper investigates the properties of 3D printed fibre-reinforced cementitious mortar prisms and members in conjunction with automation to achieve the optimum mechanical strength of printed mortar and to obtain suitable flowability and consistent workability for the mixed cementitious mortar during the printing process. This study also considered the necessary trial tests, which are required to check the mechanical properties and behaviour of the proportions of the cementitious mix. Mechanical strength was measured and shown to increase when the samples were printed using fibre-reinforced mortar by means of a caulking gun, compared with the samples that were printed using the same mix delivered by a progressive cavity pump to a 6 degree-of-freedom robot. The flexural strength of the four-printed layer fibre-reinforced mortar was found to be 3.44 ± 0.11 MPa and 5.78 ± 0.02 MPa for the one-layer. Moreover, the mortar with different types of nozzles by means of caulking is printed and compared. Several experimental tests for the fresh state of the mortar were conducted and are discussed.

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40

de Azevedo, Victor W., João A. de Lima, and Emilio E. Paladino. "A 3D Transient Model for the Multiphase Flow in a Progressing-Cavity Pump." SPE Journal 21, no. 04 (August 15, 2016): 1458–69. http://dx.doi.org/10.2118/178924-pa.

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Summary This paper presents the development of a computational-fluid-dynamics (CFD) model for the 3D transient two-phase flow within a progressing-cavity pump (PCP). The model implementation was only possible because of the meticulous mesh-generation and mesh-motion algorithm, previously published by the authors, which is briefly described herein. In this algorithm, a structured mesh was generated by defining all nodes’ positions and connectivities, for each rotor position by means of FORTRAN subroutines, which were embodied into ANSYS CFX software. The model is capable of predicting accurately the volumetric efficiency and the viscous losses, and it provides detailed information of pressure and velocity fields and void distribution along the pump. Such information could be of fundamental importance for product development and/or optimization for field operation. In field applications, the common situation is that in which the oil comes into the pump accompanied with free gas, which characterizes a multiphase flow. Simplified models on the basis of the calculation of the backflow or “slippage,” which is subtracted from the displaced flow rate, fail to characterize the PCP performance under multiphase conditions because the slip is variable along the pump. In this model, the governing equations were solved with an element-based finite-volume method in a moving mesh. The Eulerian-Eulerian approach, considering the homogeneous model, is used to model the flow of the gas/liquid mixture. The compressibility of the gas is taken into account, which is one of the main shortcomings in positive/constant displacement pumps. The effects of the different gas-volume fractions (GVFs) in pump volumetric efficiency, pressure distribution, power, slippage flow rate, and volumetric flow rate were analyzed, and some new insights are presented about the slippage in PCPs operating in multiphase conditions. The results show that the developed model is capable of reproducing pump dynamic behavior under multiphase-flow conditions performed early in experimental works.

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Carpenter, Chris. "Progressing-Cavity-Pump Configuration Addresses Operational Challenges." Journal of Petroleum Technology 73, no. 03 (March 1, 2021): 42–43. http://dx.doi.org/10.2118/0321-0042-jpt.

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This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper SPE 201130, “Novel Progressing-Cavity-Pump Configurations Address Operational Challenges,” by Lonnie Dunn, SPE, Ryan Rowan, and Abhishek Prakash, Lifting Solution, et al., prepared for the 2020 SPE Virtual Artificial Lift Conference and Exhibition-Americas, 10-12 November. The paper has not been peer reviewed. While downhole progressing-cavity-pump (PCP) designs provide options for end users, the numerous products available, combined with a lack of industry standardization, can make selection and application challenging. The complete paper provides an overview of the development of a PCP concept and implementation, which is not included in this synopsis, and then summarizes two novel PCP configurations deployed to address specific operational challenges. Design and Manufacturing, Configuration 1 A novel PCP configuration was developed from phased design trials and experience in cold heavy-oil production with sand (CHOPS) wells. This configuration uses a modified rotor to create alternating sections of contact and noncontact within a conventional stator (Fig. 1). The rotor is landed in the stator and operated until there is a performance decline. Then, the rotor is repositioned to move the active section of the rotor into the areas of the stator where there originally was no contact and, as such, normally no associated damage. Keeping the length of the alternating sections short simplifies the surface rotor positioning process, allowing it to be performed riglessly. The main benefit of this is that, rather than having to pull the rod string and run a different rotor, the same rotor is used and repositioned through lifting of the rod string at surface.

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Andrade, S. F. A. F. A., J. V. V. Valério, and M. S. S. Carvalho. "Asymptotic Model of the 3D Flow in a Progressing-Cavity Pump." SPE Journal 16, no. 02 (February 23, 2011): 451–62. http://dx.doi.org/10.2118/142294-pa.

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Summary Fundamental understanding of the flow inside progressing-cavity pumps (PCPs) represents an important step in the optimization of the efficiency of these pumps, which are largely used in artificial-lift processes in the petroleum industry. The computation of the flow inside a PCP is extremely complex because of the transient character of the flow, the moving boundaries, and the difference in length scale of the channel height between the stator and rotor. This complexity makes the use of computational fluid dynamics (CFD) as an engineering tool almost impossible. This work presents an asymptotic model to describe the single-phase flow inside PCPs using lubrication theory. The model was developed for Newtonian fluid, and lubrication theory was used to reduce the 3D Navier-Stokes equations in cylindrical coordinates to a 2D Poisson's equation for the pressure field at each timestep, which is solved numerically by a second-order finite-difference method. The predictions are close to the experimental data and the results obtained by solving the complete 3D, transient Navier-Stokes equations with moving boundaries, available in the literature. Although the accuracy is similar to the complete 3D model, the computing time of the presented model is orders of magnitude smaller. The model was used to study the effect of geometry, fluid properties, and operating parameters in the pump-performance curves and can be used in the design of new pumping processes.

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Bybee, Karen. "New Approach for Modeling Progressing-Cavity-Pump Performance." Journal of Petroleum Technology 56, no. 05 (May 1, 2004): 56–57. http://dx.doi.org/10.2118/0504-0056-jpt.

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JPT staff, _. "New Anchor Extends Insertable Progressing-Cavity-Pump Applications." Journal of Petroleum Technology 66, no. 07 (July 1, 2014): 32–35. http://dx.doi.org/10.2118/0714-0032-jpt.

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45

Fryer, A. "Automation and Surveillance Improve Progressing Cavity Pump Performance." Journal of Petroleum Technology 63, no. 08 (August 1, 2011): 24–29. http://dx.doi.org/10.2118/0811-0024-jpt.

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46

INOUE, Youichi. "Progressing Cavity Pump for Viscous Beverage and Food." Journal of the Society of Mechanical Engineers 111, no. 1081 (2008): 976–77. http://dx.doi.org/10.1299/jsmemag.111.1081_976.

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47

Denney, Dennis. "Fourteen Years of Progressing Cavity Pumps." Journal of Petroleum Technology 55, no. 05 (May 1, 2003): 63–65. http://dx.doi.org/10.2118/0503-0063-jpt.

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48

Orchard, Bryan. "Performance factors for progressing cavity pumps." World Pumps 2005, no. 467 (August 2005): 36–38. http://dx.doi.org/10.1016/s0262-1762(05)70669-6.

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49

Liu, Wu, Mingcai Shu, Yongyao Sun, and Yuanbo Fan. "Flow Field Numerical Simulation and Performance Analysis of Progressing Cavity Pump." SPE Production & Operations 36, no. 02 (March 24, 2021): 343–58. http://dx.doi.org/10.2118/205359-pa.

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Summary Progressing cavity pump (PCP) is the essential booster equipment in oil–gas mixing delivery. Changes in relevant parameters in PCP operations directly affect the working performance and service life of the pump. On the basis of computational fluid dynamics (CFD) in this study, we apply dynamic grid technology to establish a 3D flow field numerical calculation model for the CQ11-2.4J PCP, which is used in the field of the Hounan Operation Area in Changqing oil field, China. The effects of several operating parameters, such as oil viscosity, pump rotation speed, differential pump pressure, and void fraction of oil, on the pressure and the velocity distribution of the PCP flow field are examined. Various performance parameters in the transport of the oil–gas two-phase mixture are used in the analysis, including volumetric flow rate, slippage, shaft power, volumetric efficiency, and system efficiency. The results show that the pressure and speed distribution in the pump chamber of the PCP is relatively homogenous under different working conditions, whereas the pressure and speed exhibited sharp changes at the stator and rotor sealing line and adjacent areas in the pump chamber. Increasing the viscosity of the oil and the speed of the rotor can effectively improve the flow characteristics of the PCP, but extremely high pump rotation speed would cause a decline in system efficiency. Increasing the differential pressure and the void fraction of oil would result in a decrease in the volumetric flow rate and efficiency of the PCP. Considering the variation law of the PCP's performance parameters, the optimal interval for each operating parameter of the PCP is as follows: Oil viscosity at 50–100 mPa·s, pump rotation speed at 200–300 rev/min, differential pressure at 0.2–0.3 MPa, and the void fraction of oil not more than 50%. This research can provide technical support for the optimization of the working conditions of the PCP on site.

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Ceballos, Juan Bernardo, and Oscar Andrés Vivas. "Mathematical model of controllers for progressive cavity pumps." Revista UIS Ingenierías 18, no. 2 (February 14, 2019): 17–30. http://dx.doi.org/10.18273/revuin.v18n2-2019002.

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