Relevant bibliographies by topics / Well productivity,productivity index

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Academic literature on the topic 'Well productivity,productivity index'

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Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Well productivity,productivity index"

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Wang, Shaojun, and Joe Eaton. "Predicting Productivity Index of Horizontal Wells." Journal of Energy Resources Technology 129, no. 2 (November 2, 2006): 89–95. http://dx.doi.org/10.1115/1.2718577.

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The popular Joshi model slightly overestimated the flow resistance of a horizontal well. As a result of this, the Joshi model underpredicts the productivity index (PI) of a horizontal well by a few percent. In the extreme case in which vertical permeability goes to zero, the Joshi model predicts a 0.0 stb∕day-psi PI, which is wrong. In this paper, the flow for a horizontal well is divided into three flows: the flow in the reservoir above the horizontal wellbore, the flow in the reservoir with a thickness of 2rw containing the horizontal wellbore, and a flow in the reservoir below the horizontal well bore. The second flow is assumed to be pure horizontal flow. The first and third flows can be further divided into a horizontal flow and a vertical flow. In this paper, the equation for each flow is provided, and then combining these flows we give the equation to calculate the effective PI of horizontal wells. In addition, when the horizontal wellbore is not located at the h∕2 midpoint of a reservoir, the Joshi model predicts an increasing PI, which is intuitively and mathematically an incorrect trend. This paper derives a new equation to compute the PI of horizontal wells when the wellbore is eccentric relative to the reservoir midpoint. The new equation generates the correct trend.
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Aulisa, Eugenio, Lidia Bloshanskaya, and Akif Ibragimov. "Well productivity index for compressible fluids and gases." Evolution Equations and Control Theory 5, no. 1 (March 2016): 1–36. http://dx.doi.org/10.3934/eect.2016.5.1.

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Wang, Mingxian, Zifei Fan, Lun Zhao, Guoqiang Xing, Wenqi Zhao, and Chengqian Tan. "Productivity analysis for a horizontal well with multiple reorientation fractures in an anisotropic reservoir." Oil & Gas Science and Technology – Revue d’IFP Energies nouvelles 75 (2020): 80. http://dx.doi.org/10.2516/ogst/2020078.

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Reorientation fractures may be formed in soft and shallow formations during fracturing stimulation and then affect well productivity. The principal focus of this study is on the productivity analysis for a horizontal well with multiple reorientation fractures in an anisotropic reservoir. Combining the nodal analysis technique and fracture-wing method, a semi-analytical model for a horizontal well with multiple finite-conductivity reorientation fractures was established to calculate its dimensionless productivity index and derivative for production evaluation. A classic case in the literature was selected to verify the accuracy of our semi-analytical solution and the verification indicates this new solution is reliable. Results show that for a fixed fracture configuration the dimensionless productivity index of the proposed model first goes up and then remains constant with the increase of fracture conductivity, and optimal fracture conductivity can be determined on derivative curves. Strong permeability anisotropy is a negative factor for well production and the productivity index gradually decreases with the increase of anisotropic factor. As principal fracture angle goes up, horizontal well’s productivity index increases correspondingly. However, the effect of reoriented fracture angle on the productivity index is not as strong as that of principal fracture angle. When reoriented fracture angle is smaller than principal fracture angle, reoriented factor should be as low as possible to achieve optimal productivity index. Meanwhile, well productivity index rises up with the increase of fracture number and fracture spacing, but the horizontal well has optimal reorientation fracture number and fracture spacing to get the economical productivity. Furthermore, the influence of the rotation of one central reorientation fracture on productivity index is weaker than that caused by the rotation of one external reorientation fracture. In addition, the asymmetrical distribution of one or more reorientation fractures slightly affects the productivity index when fracture conductivity is high enough.
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Abdul Manan, Faid, Muhammad Buce Saleh, I. Nengah Surati Jaya, and Uus Saepul Mukarom. "Algorithm for assessing forest stand productivity index using leaf area index." Indonesian Journal of Electrical Engineering and Computer Science 16, no. 3 (December 1, 2019): 1311. http://dx.doi.org/10.11591/ijeecs.v16.i3.pp1311-1319.

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This paper describes a development of an algorithm for assessing stand productivity by considering the stand variables. Forest stand productivity is one of the crucial information that required to establish the business plan for unit management at the beginning of forest planning activity. The main study objective is to find out the most significant and accurate variable combination to be used for assessing the forest stand productivity, as well as to develop productivity estimation model based on leaf area index. The study found the best stand variable combination in assessing stand productivity were density of poles (X2), volume of commercial tree having diameter at breast height (dbh) 20-40 cm (X16), basal area of commercial tree of dbh >40 cm (X20) with Kappa Accuracy of 90.56% for classifying into 5 stand productivity classes. It was recognized that the examined algorithm provides excellent accuracy of 100% when the stand productivity was classified into only 3 classes. The best model for assessing the stand productivity index with leaf area index is y = 0.6214x - 0.9928 with R2= 0.71, where y is productivity index and x is leaf area index.
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Tzeremes, Panayiotis, and Nickolaos G. Tzeremes. "Productivity in the Hotel Industry: An Order-α Malmquist Productivity Indicator." Journal of Hospitality & Tourism Research 45, no. 1 (November 24, 2020): 133–50. http://dx.doi.org/10.1177/1096348020974419.

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In the literature, it is highlighted that the deterministic nature of the data envelopment analysis–based productivity measures makes them sensitive to sample characteristics. However, the majority of the related empirical studies ignore the potential bias in their data envelopment analysis–based productivity estimations. This article illustrates how the order-α quantile-type estimators can be applied to construct a robust version of the Malmquist productivity indices. Using the order-α estimators, we construct a Malmquist productivity index alongside with two well-known decompositions. The proposed productivity indicator is less sensitive to potential outliers and extreme values. Then, as an illustrative example, we apply the quantile-type productivity index on a sample of 270 hotels operating in the Balearic Islands over the period 2004-2013. The productivity levels alongside with their components are analyzed during the global financial crisis period.
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Oaikhena, E. Emmanuel, and J. Oloro. "A Comparative Study of the Productivity Index of Horizontal Well." Greener Journal of Petroleum and Gas Exploration 1, no. 1 (September 20, 2013): 007–19. http://dx.doi.org/10.15580/gjpge.2013.1.120112308.

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Wang, Shuozhen, Shuoliang Wang, Chunlei Yu, and Haifeng Liu. "Single Well Productivity Prediction Model for Fracture-Vuggy Reservoir Based on Selected Seismic Attributes." Energies 14, no. 14 (July 8, 2021): 4134. http://dx.doi.org/10.3390/en14144134.

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Single well productivity is an important index of oilfield production planning and economic evaluation. Due to fracture-vuggy reservoirs being characteristically strongly heterogeneous and having complex fluid distribution, the commonly used single well productivity prediction methods for fracture-vuggy reservoirs have many problems, such as difficulty in obtaining reservoir parameters and producing large errors in the forecast values of single well productivity. In this paper, based on the triple medium model, the Laplace transform and Duhamel principle are used to obtain the productivity equation of a single well in a fracture-vuggy reservoir. Secondly, the seismic attributes affecting the productivity of a single well are selected using the Spearman and Pearson correlation index calculation method. Finally, the selected seismic attributes are introduced into the productivity equation of the triple medium model through the interporosity flow coefficient and the elastic storativity ratio, and the undetermined coefficients under different karst backgrounds are determined using multiple nonlinear regression. From these, a new method for predicting single well productivity of fracture-vuggy reservoir is established. In order to verify the feasibility of the new method, based on the actual production data of a fracture-vuggy reservoir in Xinjiang, the new single well productivity prediction method is used to predict the productivity of 134 oil wells. The results show that the new productivity prediction method not only reduces calculation workload, but also improves the accuracy of productivity prediction, which contributes to a good foundation for future oilfield development.
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Davletbakova, L. A., S. I. Gabitova, V. Yu Klimov, D. V. Shuvaev, I. Ya Edelman, and S. А. Shmidt. "A new method for monitoring wells productivity index dynamics." PROneft’. Proffessional’no o nefti 6, no. 2 (June 30, 2021): 33–38. http://dx.doi.org/10.51890/2587-7399-2021-6-2-33-38.

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А method for monitoring wells productivity index dynamics from the moment of its start-ups is proposed. It allows detecting candidates for conducting well tests (WT) and well interventions for the increase of a daily production. The method is based on an integral analysis using pressure maps and well tests. Application of this method on the Salym group of oilfields has allowed concluding about wells stock status, about productivity index dynamics in time, also to make an assumption about the reasons for its change. The analysis showed that productivity index relative changes in horizontal wells lower than in slanted wells.
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Nartey, Sarah Beatson, Kofi A. Osei, and Emmanuel Sarpong-Kumankoma. "Bank productivity in Africa." International Journal of Productivity and Performance Management 69, no. 9 (May 23, 2019): 1973–97. http://dx.doi.org/10.1108/ijppm-09-2018-0328.

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Purpose The purpose of this paper is to provide a total factor productivity index for the African banking industry. It also investigates the impact of some internal and external determinants affecting bank productivity. Design/methodology/approach The biennial Malmquist productivity index and various regression models (ordinary least squares, Tobit and truncated bootstrapped regression) are employed in analyzing data from 120 banks in 24 African countries from 2007 to 2012. Findings The results indicate a general decline in productivity of banks in Africa, largely due to inadequate technological progress. State banks are found to be more productive than foreign and private banks. The regression analyses showed that non-executive directors, leverage, management quality, credit risk, competition and exchange rate have significant impact on bank productivity, but ownership and CEO-duality do not. Practical implications The results have implications for management of banks, governments and regulators. It shows the need for policy and investments that improve state-of-the art technology. The findings also seem to suggest poor management practices in input usage, especially in operational management, as well as costs emanating from non-interest sources. Bank managers need to address these deficiencies to improve productivity in African banking markets. Originality/value A major contribution of this paper is the productivity index provided for the African banking industry. This study is also the first to apply the biennial Malmquist to analyze productivity in the African banking industry.
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Naz, Farah, Hafsa Khan, and Madeeha Sayyed. "Productivity and Efficiency Analysis of Pakistani Textile Industry using Malmquist Productivity Index Approach." Journal of Management and Research 4, no. 2 (December 2, 2019): 1–23. http://dx.doi.org/10.29145//jmr/42/040203.

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The key purpose of this study is to evaluate the total factor productivity of the textile sector by using DEA (Data Envelopment Analysis) and also identifying the components which play a significant role in the growth of productivity. This paper examines productivity performance of the Pakistan’s textile manufacturing industry using firm-level panel data of a total of 64 firms for the period 2011-2015. Moreover, the sources of expansion and compression in output are recognized for the whole textile industry as well as for the three sub sectors comprising of 35 firms from spinning, 21 from composite and 8 from weaving textile sector. Empirical results suggest that total factor productivity growth of composite, spinning and weaving textile sectors are not presenting skewed distribution. Moreover, the component of technological change had a negative impact on spinning textile sector. Technical efficiency and technological change, both, had a positive impact on the productivity of composite and weaving textile sectors. Overall, the spinning textile sector has no contribution in the productivity growth. A critical evaluation of the production factors is necessary for the maintenance of the performance of the organization. This paper provides information to the decision makers and policy makers about the allocation, acquisition and anticipation of the resources. To eradicate the industry’s pitfalls, textile sector in combination of subsectors has been selected providing a comparative analysis of the efficiencies adding to the existing body of literature by detecting the primary zones for improving productivity performance in Pakistani textile manufacturing as the pure efficiency component.
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Dissertations / Theses on the topic "Well productivity,productivity index"

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Trotter, Vinessa Kaye. "The Relationship Between Psychological Well-Being and Work Productivity: Validation of the OQ Productivity Index." BYU ScholarsArchive, 2008. https://scholarsarchive.byu.edu/etd/1867.

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Managed Mental Health Care (MMHC) began blanketing the United States when cost of care rose exponentially. MMHC is one avenue many employers and insurance companies have chosen to provide employees with mental health treatment at controlled costs. However, not all employers view supplying their employees with mental health treatment beneficial, as they do not know mental health problems can significantly decrease work productivity. Brown and Jones (2005) used the Social Role Scale (SR) of the Severe Outcome Questionnaire (SOQ) to estimate work productivity in employees under the assumption that the scale measures work productivity. The purpose of this study was to move closer to an estimation of the relationship between improved mental health and improved workplace functioning by examining the relationships among a self-report measure of mental health (i.e., the SR), a self-report measure of work productivity (i.e., the Work Productivity and Activity Impairment Scale [WPAI]), and objective measures of work productivity (i.e., the quality and timeliness of institutional records, supervisor ratings, and sick hours used). It was thought that understanding the relationships among these measures might assist in estimating the cost/benefit of investing in psychotherapy. Participants in this study were employees and inpatients at the Utah State Hospital. Statistical analyses indicated the SR did predict two WPAI scales (i.e., Presenteeism and Activity Impairment) for employees. Specific relationships among measures, and suggestions for future research, are discussed.
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Nunsavathu, Upender Naik. "Productivity index of multilateral wells." Morgantown, W. Va. : [West Virginia University Libraries], 2006. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4702.

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Thesis (M.S.)--West Virginia University, 2006.
Title from document title page. Document formatted into pages; contains xi, 106 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 104-106).
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Khalmanova, Dinara Khabilovna. "A mathematical model of the productivity index of a well." Diss., Texas A&M University, 2004. http://hdl.handle.net/1969.1/301.

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Motivated by the reservoir engineering concept of the productivity index of a producing oil well in an isolated reservoir, we analyze a time dependent functional, diffusive capacity, on the solutions to initial boundary value problems for a parabolic equation. Sufficient conditions providing for time independent diffusive capacity are given for different boundary conditions. The dependence of the constant diffusive capacity on the type of the boundary condition (Dirichlet, Neumann or third-type boundary condition) is investigated using a known variational principle and confirmed numerically for various geometrical settings. An important comparison between two principal constant values of a diffusive capacity is made, leading to the establishment of criteria when the so-called pseudo-steady-state and boundary-dominated productivity indices of a well significantly differ from each other. The third type boundary condition is shown to model the thin skin effect for the constant wellbore pressure production regime for a damaged well. The questions of stabilization and uniqueness of the time independent values of the diffusive capacity are addressed. The derived formulas are used in numerical study of evaluating the productivity index of a well in a general three-dimensional reservoir for a variety of well configurations.
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Larochelle, Catherine. "Three essays on productivity and risk, marketing decisions, and changes in well-being over time." Diss., Virginia Tech, 2011. http://hdl.handle.net/10919/40379.

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This dissertation is composed of three essays; the first two examine the decisionmaking of potato producing households in Bolivia and the third examines well-being changes among Zimbabwe households. The first essay entitled “The role of risk mitigation in production efficiency: A case study of potato cultivation in the Bolivian Andes” estimates the costs of self-managing environmental risk through activity and environmental diversification. Risk management has the potential to reduce income variability but at the cost of increasing production inefficiency, which we measure employing a stochastic production frontier. Among variables capturing environmental diversification, discontinuity between fields has the most detrimental effect on production efficiency. Activity diversification, measured by the ratio of potato to total crop revenue, has a stronger impact on inefficiency and yield losses than any of the environmental diversification variables. The second essay entitled “Determinants of market participation decisions and marketing choices in Bolivia” examines three decisions related to potato market participation: market entry, volume sold, and market choice. The first two are analyzed using a Heckman selection model. Results indicate that isolation, measured by population density and distance to markets, negatively impacts market entry. The most important determinant of quantity sold is land holding. Market choices are judged according to second-order stochastic dominance (SOSD). Market choices meeting the SOSD criterion are referred to as optimal marketing strategies as they have the higher expected payoff for a minimal income variance. Results suggest that the probability of selecting an optimal marketing strategy increases with quantity sold, access to market information, and access to liquidity while it decreases with distance to markets. The third essay entitled “A profile of changes in well-being in Zimbabwe, 2001- 2007/8, using an asset index methodology” shows that it is possible to examine intertemporal and spatial changes in well-being in the absence of consumption expenditures data by using an asset index. The asset index was constructed using Polychoric Principal Component Analysis. Results indicate that poverty and extremely poverty grew significantly in rural Zimbabwe while in urban areas, poverty diminished and extreme poverty grew.
Ph. D.
LTRA-7 (Pathways to CAPS in the Andes)
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Carrillo, Arturo Naisa Veronica. "Integração de dados para analise de desempenho de poços de petroleo." [s.n.], 2008. http://repositorio.unicamp.br/jspui/handle/REPOSIP/263349.

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Orientadores: Jose Ricardo Pelaquim Mendes, Celso Kazuyuki Morooka
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica, Instituto de Geociencias
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Resumo: Neste trabalho é proposto um parâmetro, denominado de índice de desempenho do sistema, que permite estudar o desempenho de poços de petróleo. Um diferencial deste parâmetro é que ele utiliza dados reais e abundantes de campo que são medidos periodicamente. Tal índice permite, por exemplo, avaliar o desempenho e as tecnologias utilizadas nos poços. Usando este índice, verificou-se a influência da geometria do poço para um mesmo campo e uma mesma zona produtora, comparando o desempenho dos poços verticais, direcionais e horizontais. Comparou-se também o desempenho do tipo de contenção de areia para esse mesmo campo e essa mesma zona produtora. Os dados utilizados neste trabalho foram gentilmente fornecidos pela Petrobras.
Abstract: In this work a new parameter called the System Performance Index is proposed, which allows a more profound study of the performance of petroleum wells. An outstanding characteristic of this parameter is that it uses a large amount of field data measured periodically. This index allows the assessing of the performance and technologies used in the wells. This study presents a comparison of the performance of vertical, directional and horizontal wells. The sand control technologies used in the wells are also evaluated. Finally, the proposed parameter enables a practical analysis that can be implemented as a strategic tool for oilfield, performance and optimization studies. Data used in this work were kindly supplied by Petrobras.
Mestrado
Explotação
Mestre em Ciências e Engenharia de Petróleo
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Ariza, Sergio Fernando Celis. "Estudos de aplicação de um novo parâmetro para análise de desempenho de sistemas de produção de petróleo." [s.n.], 2011. http://repositorio.unicamp.br/jspui/handle/REPOSIP/263245.

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Orientadores: José Ricardo Pelaquim Mendes, Sérgio Nascimento Bordalo
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica e Instituto de Geociências
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Resumo: O avanço tecnológico na instrumentação de poços de petróleo tem proporcionado um vasto volume de dados. A análise desses dados pode fornecer uma importante contribuição aos projetos de futuras instalações de produção. Para esta finalidade é necessário organizar e integrar informações que se encontram em diferentes setores, referentes ao poço, ao reservatório e às linhas de escoamento. Este processo de interpretação de dados requer o desenvolvimento de ferramentas e de métodos de análise. O Índice de Desempenho do Escoamento (IDE) é um parâmetro operacional que serve de instrumentação para estudar o desempenho das instalações de poços de petróleo utilizando os dados abundantes de campo que são medidos periodicamente em tempo real. O IDE permite, por exemplo, avaliar o desempenho das tecnologias empregadas nos poços. Neste trabalho, estuda-se o potencial de aplicação do IDE para poços que operam com gas-lift. O IDE é utilizado para verificar a influência da geometria do poço, comparar o desempenho de poços horizontais, verticais e direcionais em um mesmo campo e zona produtora, para comparar o tipo de contenção de areia, para identificar a presença de problemas no sistema de produção e no auxilio ao diagnóstico de tais problemas
Abstract: Technological advances in oil wells instrumentation have provided a volume of important data. The Analysis of these data can provide an important contribution to the projects of future production facilities. For this purpose is necessary to organize and to integrate information that are in different sectors, referring to the well, reservoir and flow lines. This process of data interpretation requires the development of tools and methods of analysis. The Flow Performance Index (FPI) is an operational parameter that can used to study the performance of oil wells facilities using the field abundant data which are measured periodically in real time. For example, the FPI allows assessment the technologies performance employed in the wells. In the present study, examines the FPI application potential for wells that operate with gas-lift. The IDE is used to verify the influence of well geometry to compare the performance of horizontal, vertical and directional wells for the same field and same producing area. The FPI is employed to compare the performance of the type of sand control technologic. The FPI is applied in identification of problems presence in the production system and in the aid to diagnosis these problems
Mestrado
Explotação
Mestre em Ciências e Engenharia de Petróleo
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Adesokan, Muhideen Bolaji. "Overcoming unboundedness in Malmquist productivity measures : emprical tests of the mamquist total factor productivity index." Thesis, University of Leicester, 2007. http://hdl.handle.net/2381/31122.

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The widely applied non-parametric Malmquist Productivity Index (MPI) is beset by Unboundedness under variable returns to scale technology assumptions. Potentially, this leads to inaccurate productivity measurements. The Malmquist Total Factor Productivity Index (MTFP) has been proposed as an alternative index for overcoming Unboundedness and has seen applications at the firm level. I extend the body of knowledge on these two indexes by applying them both to aggregate level data to examine the extent to which they are beset by Unboundedness and furthermore by decomposing the MTFP. Furthermore I address the pervasive gap in the literature on the relative performance of global regions. This level of study has received little attention while much work has been done on the relative performance of individual nations. I find that the MTFP completely overcomes Unboundedness whereas the 5% of distance functions computed with the MPI are subject to the problem. In addition there is a statistically significant difference between the variable returns to scale (VRS) MTFP and MPI. There is a similarly significant difference between the variable returns to scale MTFP and the constant returns to scale MPI that has been widely used as its proxy. Thus I conclude advocating the use of the MTFP where the production relation being examined is best characterised by variable returns to scale technology assumptions. The Far East region was found to have achieved best performance in the 1980 -- 1999 period. There is an indication, albeit tenuous, that the regions with organised economic blocs achieve relatively high levels of performance.
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Chen, Guanlu. "Calculation of well productivity by analytical and numerical simulators." Thesis, Heriot-Watt University, 1995. http://hdl.handle.net/10399/1313.

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Lu, Jing. "A Mathematical Model of Horizontal Wells Productivity and Well Testing Analysis." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/37018.

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This thesis presents new productivity and well testing formulae of horizontal wells. Taking a horizontal well as a uniform line source, this thesis finds velocity potential formula and the productivity formulae for a horizontal well in an ellipsoid of revolution drainage volume by solving analytically the involved three-dimensional partial differential equations. These formulae can account for the advantages of horizontal wells, and they are more accurate than other formulae which are based on two-dimensional hypotheses. This thesis also presents new well testing formulae of horizontal wells in a single porosity system and a double porosity system. Compared with the formulae published in the literatures, our formulae, which do not use the sum of infinite series, are more reasonable and easy to be used in well testing analysis.
Master of Science
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Vågenes, Karianne Skårnes. "Completion Design Review with Focus on Well Integrity and Productivity." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for petroleumsteknologi og anvendt geofysikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-19409.

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In this thesis a full well design and detailed tubing design has been developed for the HPHT well K-14. Wellcat™ casing design software has been used for tubing string analysis. K-14 has been designed using the same conditions as for wells in the Morvin HPHT field. The main issues related to this specific well design are the completion of the reservoir section, the tubing design with all relevant loads, and a HPHT well design with flexibility for intervention and stimulation by hydraulic fracturing. The reservoir drainage plan is based on wells with horizontal reservoir sections for optimal and cost effective recovery. The tubing has been designed and engineered for all the loads that the well may be exposed to during its lifetime. It is very important that all possible loads have been investigated, so the well complies with the HPHT requirements. The loads seen by the well can be divided in two groups: the loads induced by production and the loads during installation (qualification/pressure testing) and intervention.The focus of the well design has been to achieve optimal drainage with a simple and flexible solution to meet the requirements for intervention. Extreme loads may occur for wells in HPHT fields. There are additional aspects to consider when engineering these wells, such as steel and material degradation when exposed to high temperatures, and large temperature variations from production to bullheading with cold fluids. The effect of extreme temperature changes are seen by the liquids in the closed annuli, they will expand/contract resulting in an increase/decrease in pressure seen by the tubulars. The temperature variations will also affect sealing elastomers that are under high pressures, making them brittle and reduce/loose the sealing capacity. The aspects of well design and tubing design are discussed in detail through the development and engineering of the HPHT well K-14
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Books on the topic "Well productivity,productivity index"

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Maniadakis, Nikolaos. A cost malmquist type productivity index. Coventry: University of Warwick. Warwick Business School Research Bureau, 1997.

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L, Cooper Cary, ed. Well-being: Productivity and happiness at work. Basingstoke, Hampshire [England]: Palgrave Macmillan, 2011.

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Tomer, John F. Organizational capital: The path to higher productivity and well-being. New York: Praeger, 1987.

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Dorris, Tamara. Well @ work: The corporate companion for good health and productivity. Sacramento, Calif: Empowered Press Pub., 2003.

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Kai, Sun, and Ghalambor Ali, eds. Well productivity handbook: Vertical, fractured, horizontal, multilateral, and intelligent wells. Houston, TX: Gulf Pub., 2008.

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Hammer, R. D. A soil-based productivity index to assess surface mine reclamation. S.l: s.n, 1992.

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Ehui, Simeon K. Measuring productivity in African agriculture: A survey of applications of the superlative index numbers approach. Nairobi: International Livestock Research Institute, 2002.

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Good, David H. Index number and factor demand approaches to the estimation of productivity. Cambridge, MA: National Bureau of Economic Research, 1996.

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Stoneman, Paul. Productivity in UK manufacturing: Double deflation and a real cost index. Coventry: University of Warwick, Warwick Business School Research Bureau, 1992.

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Payandeh, Bijan. Application of basal area index in the yield estimation of boreal mixedwood cover types. Sault Ste. Marie, Ont: Great Lakes Forestry Centre, 1996.

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Book chapters on the topic "Well productivity,productivity index"

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Castells-Quintana, David. "Productivity." In Encyclopedia of Quality of Life and Well-Being Research, 5079–81. Dordrecht: Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-007-0753-5_2274.

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Mody, Rustom K., and Martin P. Coronado. "Multilateral Wells: Maximizing Well Productivity." In Pumps and Pipes, 71–86. Boston, MA: Springer US, 2010. http://dx.doi.org/10.1007/978-1-4419-6012-2_7.

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Tone, Kaoru, and Miki Tsutsui. "MALMQUIST PRODUCTIVITY INDEX MODELS." In Advances in DEA Theory and Applications, 40–56. Chichester, UK: John Wiley & Sons, Ltd, 2017. http://dx.doi.org/10.1002/9781118946688.ch6.

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Prasada Rao, D. S. "Index Numbers and Productivity Measurement." In Handbook of Production Economics, 1–65. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-10-3450-3_8-1.

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Coelli, Tim, D. S. Prasada Rao, and George E. Battese. "Index Numbers and Productivity Measurement." In An Introduction to Efficiency and Productivity Analysis, 69–97. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4615-5493-6_4.

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"Index." In Well Productivity Handbook, 237–42. Elsevier, 2019. http://dx.doi.org/10.1016/b978-0-12-818264-2.20001-8.

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"Index." In Well Productivity Handbook, 329–34. Elsevier, 2008. http://dx.doi.org/10.1016/b978-1-933762-32-6.50020-x.

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"Transient Productivity Index for Numerical Well Test Simulations." In Reservoir Characterization—Recent Advances, 163–74. American Association of Petroleum Geologists, 1999. http://dx.doi.org/10.1306/m711c11.

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"Index." In Productivity, 179–84. Agenda Publishing, 2020. http://dx.doi.org/10.2307/j.ctv103xdcd.13.

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Wisniewski, Piotr. "The Management and Performance of Social Media Initial Public Offerings (IPOs)." In Analyzing the Strategic Role of Social Networking in Firm Growth and Productivity, 1–21. IGI Global, 2017. http://dx.doi.org/10.4018/978-1-5225-0559-4.ch001.

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Social media companies have increasingly used global stock exchanges to raise fresh capital needed to expand and commercialise their business models. Despite the soaring proliferation of social media interactions and improving economic fundamentals, many of the high-profile IPOs have underperformed on debut and in secondary trading. This chapter seeks to identify success and failure factors of social media stock market flotations from the operational, industrial and financial perspectives. The research features flagship social media IPOs comprised by the most representative social media Exchange Traded Fund (ETF), the Global X Social Media Index ETF (SOCL), which replicates the price and return performance of the globally recognised Solactive Social Media Total Return Index. The analysis sums up the early evidence of IPO organisation with regard to social media issuers and posits three decisive factors in this process related to: flotation timing, pricing and pre-IPO business integration. The research offers some practical recommendations for future social media IPOs as well as directions for further academic studies at the interface of social media industrial, economic and capital market activity. The following takeaways concerning social media IPOs emerge from the study: 1) Staging and timing: social media companies should mull flotations when a clear-cut path toward cash generation and accrual profits is observable (chronically cash deficient and unprofitable social media tend to underperform on debut and in post-IPO trading) and amid protracted bull markets so as to raise the odds of a propitious IPO climate; 2) Organisation and management: the success of social media going public decisions is a function of seamless IPO organisation (including conservative pricing, share dilution tied to envisaged liquidity and capital expenditure as well as trading and clearing system reliability); 3) Issuer characteristics: social media IPOs are facilitated by businesses commanding a dominant position on the home market, having a diversified core business (including exposure to non-media operations), coming on the stock market either as industry trendsetters or in the wake of successfully executed IPO benchmarks; 4) Factor coalescence: no isolated factor discussed in this chapter can fully explain the performance of a social media IPO – it is rather their combination and interconnectivity that can comprehensively attest to the success or failure of a going public strategy employed by a social media company. From the investment standpoint, the case study analysis demonstrates that a case-by-case (rather than sectoral) approach needs to be adopted for investors seeking to derive gains from social media IPOs, as passive exposure to the entire industry (e.g. via index tracking) is not per se a guarantor of market competitive investment performance.
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Conference papers on the topic "Well productivity,productivity index"

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Saputelli, Luigi, Jorge Perez, Alejandro Chacon, Carlos Lopez, Jose Patino, and Mauricio Eggenschwiler. "Well Productivity Index Degradation: Applied Modeling Workflow." In SPE Annual Technical Conference and Exhibition. Society of Petroleum Engineers, 2010. http://dx.doi.org/10.2118/133452-ms.

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Kozhevnikov, Dmitry, Kazimir Kovalenko, and Ivan Deshenenkov. "Clastic Reservoirs Productivity Index Estimation with Well Log Data." In SPE Asia Pacific Oil and Gas Conference and Exhibition. Society of Petroleum Engineers, 2013. http://dx.doi.org/10.2118/165771-ms.

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Posvyanskii, D., and A. Novikov. "Calculation of Well Productivity Index in Stochastic Porous Media." In ECMOR XVII. European Association of Geoscientists & Engineers, 2020. http://dx.doi.org/10.3997/2214-4609.202035114.

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Gruzdev, A. P., V. N. Babov, A. V. Kosarev, Y. P. Simonov, I. V. Simon, and A. S. Semenikhin. "Well Productivity Index Determination Based on Artificial Neural Networks." In GeoBaikal 2020. European Association of Geoscientists & Engineers, 2020. http://dx.doi.org/10.3997/2214-4609.202052038.

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Gruzdev, A., V. Babov, Y. Simonov, A. Kosarev, I. Simon, V. Koryabkin, and A. Semenikhin. "The Well Productivity Index Determination Based on Machine Learning Approaches." In First EAGE Digitalization Conference and Exhibition. European Association of Geoscientists & Engineers, 2020. http://dx.doi.org/10.3997/2214-4609.202032094.

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Crafton, J. W. "Oil and Gas Well Evaluation Using the Reciprocal Productivity Index Method." In SPE Production Operations Symposium. Society of Petroleum Engineers, 1997. http://dx.doi.org/10.2118/37409-ms.

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Lee, S. H., and W. J. Milliken. "The Productivity Index of an Inclined Well in Finite-Difference Reservoir Simulation." In SPE Symposium on Reservoir Simulation. Society of Petroleum Engineers, 1993. http://dx.doi.org/10.2118/25247-ms.

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Pestrikov, A. V., A. R. Basharov, and M. N. Kravchenko. "Fractured Well Productivity Index Reduction Caused by the Presence of Damaged Zone." In Saint Petersburg 2010. Netherlands: EAGE Publications BV, 2010. http://dx.doi.org/10.3997/2214-4609.20145511.

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Cho, Hyun, and Subhash N. Shah. "Prediction of Specific Productivity Index for Long Horizontal Wells." In SPE Production and Operations Symposium. Society of Petroleum Engineers, 2001. http://dx.doi.org/10.2118/67237-ms.

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Al Gahtani, Abdallah Mobarak. "A New Productivity Index Formula for ESP-Lifted Wells." In SPE Middle East Oil and Gas Show and Conference. Society of Petroleum Engineers, 2011. http://dx.doi.org/10.2118/141984-ms.

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Reports on the topic "Well productivity,productivity index"

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Good, David, M. Ishaq Nadiri, and Robin Sickles. Index Number and Factor Demand Approaches to the Estimation of Productivity. Cambridge, MA: National Bureau of Economic Research, October 1996. http://dx.doi.org/10.3386/w5790.

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Curtis, Trisha, and Benjamin Montalbano. Completion Design Changes and the Impact on US Shale Well Productivity. Oxford Institute for Energy Studies, November 2017. http://dx.doi.org/10.26889/ei212017.

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Connolly, Carol, Marian Ruderman, and Jean Leslie. Sleep well, lead well: How better sleep can improve leadership, boost productivity, and spark innovation. Center for Creative Leadership, May 2014. http://dx.doi.org/10.35613/ccl.2014.1011.

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Yépez, Ariel, Luis San Vicente Portes, and Santiago Guerrero. Productivity and Energy Intensity in Latin America. Inter-American Development Bank, April 2021. http://dx.doi.org/10.18235/0003219.

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Within an industrial setting, what would ones conjecture be about the relation between Energy Intensity (EI) and productivity? Could higher Energy use be associated to more capital intensive processes, and thus higher output (per worker)? Or Ceteris paribus, are productivity indicators inversely associated with energy intensity? So that more productive firms or industries tend also to be more energy efficient. The nature of this question is multifold as there are historical, geographical, institutional, developmental, and policy variables that jointly affect industrial development as well as a nations energy supply. This study seeks to assess the relationship between these variables in the industrial sector of four Latin American countries. Under alternative measures of productivity, namely, average labor productivity and total factor productivity (TFP), we find a statistically negative relationship between productivity and Energy intensity.
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Pitt, Mark, Mark Rosenzweig, and Nazmul Hassan. Identifying the Cost of a Public Health Success: Arsenic Well Water Contamination and Productivity in Bangladesh. Cambridge, MA: National Bureau of Economic Research, November 2015. http://dx.doi.org/10.3386/w21741.

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Lemos, Renata, Karthik Muralidharan, and Daniela Scur. Personnel Management and School Productivity: Evidence from India. Research on Improving Systems of Education (RISE), February 2021. http://dx.doi.org/10.35489/bsg-rise-wp_2021/063.

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This paper uses new data to study school management and productivity in India. We report four main results. First, management quality in public schools is low, and ~2σ below high-income countries with comparable data. Second, private schools have higher management quality, driven by much stronger people management. Third, people management quality is correlated with both independent measures of teaching practice, as well as school productivity measured by student value added. Fourth, private school teacher pay is positively correlated with teacher effectiveness, and better managed private schools are more likely to retain more effective teachers. Neither pattern is seen in public schools.
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Osidoma, Japhet, and Ashiru Mohammed Kinkwa. Creatively Improving Agricultural Practices and Productivity: Pro Resilience Action (PROACT) project, Nigeria. Oxfam, February 2021. http://dx.doi.org/10.21201/2021.7260.

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Since April 2016, The European Union and the Oxfam Pro-Resilience Action Project in Kebbi and Adamawa States, Nigeria, have supported poor smallholder rural farmers to improve their agricultural productivity. The project has a specific focus on increasing crop yields per hectare for better land usage, as well as ensuring farmers possess the skills they need to maintain good agricultural practices, such as inputs utilization and climate mitigation strategies, as well as an information-sharing system on weather and market prices. The project uses a Farmer Field School model that continues to serve as a viable platform for rural farmers to access hands-on skills and basic modern farming knowledge and techniques. The case studies presented here demonstrate a significant increase in farmers’ productivity, income and resilience. This approach should be emulated by governments and private sector players to achieve impact at scale in Nigeria’s agricultural sector, which is the country’s top non-oil revenue stream.
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Túñez López, M., MY Martínez Solana, and KP Valerezo González. Analysis of the productivity, impact, and collective h-index of the communication research carried out in Spain based on the information shared by researchers in their individual Google Scholar profiles. Revista Latina de Comunicación Social, RLCS, October 2014. http://dx.doi.org/10.4185/rlcs-2014-1030en.

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Nin Pratt, Alejandro, and Héctor Valdés Conroy. After the Boom: Agriculture in Latin America and the Caribbean. Inter-American Development Bank, December 2020. http://dx.doi.org/10.18235/0002955.

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The convergence of a favorable macroeconomic environment and high prices of primary commodities between 2000 and 2011 contributed to the best performance of agriculture in Latin America and the Caribbean (LAC) since the 1980s, with steady growth of total factor productivity (TFP) and output per worker and a reduction in the use of input per worker. The end of the upward phase of the commodity cycle in 2011 together with less favorable external markets and a deterioration of the policy environment in several countries, motivates us to revisit the situation of agriculture in LAC in recent years to analyze how these changes have affected its performance. This study applies a framework that uses index numbers together with data envelopment analysis (DEA) to estimate levels of productivity and efficiency, incorporating technical change together with technical (TE) and environmental efficiency (EE) into the decomposition of TFP. The EE index adjusts the TFP measure for pollution, treating GHG emissions as a by-product of the desired crop or livestock outputs. TFP and efficiency of crop and livestock sub-sectors was calculated for 24 LAC countries from 2000 to 2016. Our results show that the period of fast agricultural growth in LAC, driven by technical change and resource reallocation, transformed agriculture in the region leaving it in a better position to cope with the more unfavorable regional macroeconomic environment and the less dynamic global markets observed after 2011.
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Hamann, Franz, Cesar Anzola, Oscar Avila-Montealegre, Juan Carlos Castro-Fernandez, Anderson Grajales-Olarte, Alexander Guarín, Juan C. Mendez-Vizcaino, Juan J. Ospina-Tejeiro, and Mario A. Ramos-Veloza. Monetary Policy Response to a Migration Shock: An Analysis for a Small Open Economy. Banco de la República de Colombia, January 2021. http://dx.doi.org/10.32468/be.1153.

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We develop a small open economy model with nominal rigidities and fragmented labor markets to study the response of the monetary policy to a migration shock. Migrants are characterized by their productivity levels, their restrictions to accumulate capital, as well as by the flexibility of their labor income. Our results show that the monetary policy response depends on the characteristics of migrants and the local labor market. An inflow of low(high)-productivity workers reduces(increases) marginal costs, lowers(raises) inflation expectations and pushes the Central Bank to reduce(increase) the interest rate. The model is calibrated to the Colombian economy and used to analyze a migratory inflow of financially constraint workers from Venezuela into a sector with flexible and low wages.
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