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Journal articles on the topic 'Stratigraphic log'

Author: Grafiati

Published: 9 September 2021

Last updated: 29 July 2025

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1

Wu, Xuanzhi, and Edo Nyland. "Automated stratigraphic interpretation of well‐log data." GEOPHYSICS 52, no. 12 (1987): 1665–76. http://dx.doi.org/10.1190/1.1442283.

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A computerized well‐log stratigraphic interpretation system based on artificial intelligence can be seen as two steps, contact recognition and interval identification. Unlike previous approaches to mathematical zonation which are essentially statistical, consideration of the geologic environment is included for effective interpretation. Following the logic of human experts, the system first determines the log signature of the contacts. An algorithm incorporating linear regression with variable breakpoints is used to describe the structure of log curves. Log features are mapped to the assigned

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2

Lai, Fu-qiang, Zhao-Hui Huang, Zhang-xiong Zhu, Shao-hua Xu, Wei-xu Xia, and Han Luo. "Monte Carlo CLEAN Spectral Analysis Method for Detecting the Stratigraphic Cycles Based on High-resolution Electrical Image Log Data." Journal of Environmental and Engineering Geophysics 22, no. 4 (2017): 325–37. http://dx.doi.org/10.2113/jeeg22.4.325.

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This paper performs a Monte Carlo CLEAN (MC-CLEAN) spectral analysis with high-resolution electrical image log data and interpret the high-resolution formation sequence by investigating the cycles in the sediments. Firstly, in order to perform a spectral analysis with high-resolution electrical image log data, the background conductivity log curve was extracted from the borehole image. Secondly, the MC-CLEAN spectrum analysis method was used to isolate all the peaks of the logging signal. Then the 95% significance level of the CLEAN spectrum was calculated to identify the true period of the fo

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3

Nguyen, Chuc Dinh, Tu Van Nguyen, Hung Quang Nguyen, Cuong Van Bui, Thanh Quoc Truong, and Xuan Van Tran. "Applying seismic stratigraphy analysis for assessing upper Oligocene stratigraphic traps in Southeastern Cuu Long Basin." Science and Technology Development Journal 20, K4 (2017): 48–56. http://dx.doi.org/10.32508/stdj.v20ik4.1112.

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As oil and gas production has been going on over a few decades, conventional plays such as pre-Tertiary fractured basement highs and Cenozoic structural traps become more and more exhausted, and the remaining targets of the same type do not have sufficient reserves for development and production. Exploration activities in Cuu Long basin, therefore, are shifting towards more complicating types of plays which are stratigraphic traps and combination traps. Several researches were conducted in southeastern marginal slope and indicated the possibility of stratigraphic pinch-out traps with insuffici

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4

Rahmad, Basuki, Muchamad Ocky Bayu Nugroho, Sugeng Rahardjo, Muhamad Gazali Rachman, Rahmat Aziz Al Hakam, and Muhamad Imam Al Fatah. "The Stratigraphic Log drawing using GeoMS Software, Case Study: Semilir Formation, Ngoro-oro Area, Bantul, Yogyakarta." RSF Conference Series: Engineering and Technology 1, no. 1 (2021): 37–42. http://dx.doi.org/10.31098/cset.v1i1.284.

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The stratigraphic log is the standard method used to display the vertical succession of rock layers from oldest to youngest. Stratigraphic sections can be constructed based on field data and drilling data. There are two stages when using field data to create a stratigraphic cross-section. The first stage is data correction and the second stage is stratigraphic log depiction. Data correction is done manually using trigonometric empirical formulas and the drawing was done using graphic software such as CorelDraw. These stages of course needs more time and effort. GeoMS is a simple software that

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5

Wharton, Stanley Rich. "The Rimthan Arch, basin architecture, and stratigraphic trap potential in Saudi Arabia." Interpretation 5, no. 4 (2017): T563—T578. http://dx.doi.org/10.1190/int-2017-0033.1.

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The Rimthan Arch, situated between the Arabian carbonate platform and the Gotnia intrashelf basin, represents a world class hydrocarbon province in Saudi Arabia. Middle to Upper Jurassic shallow-water depositional sequences are associated with productive hydrocarbon fields in which challenges exist in defining exploration targets, mainly stratigraphic trap plays. An attempt is made to investigate the basin depositional architecture on the flank of the Arch and also to model the stratigraphic trap potential of the youngest Arab third-order sequence. The basin architecture, stratal geometries, a

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Nosheen, Mohammad, and Hamada Nadia. "Lithofacies interpretation at the upper part of the Pokurskaya formation in the Cenomanian succession, the north of the West Siberian Basin." Izvestiya of Saratov University. Earth Sciences 23, no. 1 (2023): 31–38. http://dx.doi.org/10.18500/1819-7663-2023-23-1-31-38.

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The lithofacies of the Cenomanian succession within a gas field in the north of the West Siberian basin were studied using well log information especially spontaneous potential log to determine the lithostratigraphy, hydrodynamic characteristics, possible reservoir sands and depositional environment of the study area for opportunities that will support the exploration program. Geophysical well logs from six profile wells were used for this study. The lithostratigraphic model and sequence-stratigraphic frame were developed using spontaneous potential log curves to identify lithic units like san

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7

Moreau, Julien, and Jean-Bernard Joubert. "Glacial sedimentology interpretation from borehole image log: Example from the Late Ordovician deposits, Murzuq Basin (Libya)." Interpretation 4, no. 2 (2016): B1—B16. http://dx.doi.org/10.1190/int-2015-0161.1.

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In the Murzuq Basin, the Late Ordovician glaciogenic succession forms a very complex clastic reservoir system. Although the structural setting is simple, the architecture of the stratigraphic succession is particularly intricate, and conventional wireline logs display rather homogeneous signatures. However, when exposed, the glaciogenic sedimentary succession indicates a very large range of depositional environments and clear stratigraphic changes. Based on high-quality processing and interpretation of wireline microresistivity image logs over a single well, our method allows the precise recog

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8

Rodriguez-Gomez, Michelle Iris, Bradley D. Cramer, Brian Burnham, Miao Wang, Lu Chen, and Carlos L. V. Aiken. "The Digital Integrated Stratigraphy Project (DISP) Development Phase II: On-site 3D access, analysis and integration of stratigraphic data using PCs and 3D Photorealistic Models." Stratigraphy 10, no. 4 (2013): 255–60. http://dx.doi.org/10.29041/strat.10.4.05.

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Development Phase II of the Digital Integrated Stratigraphy Project (DISP) includes the production of a Graphical User Interface (GUI) (DISP Tools) that allows users to access a previously produced 3D photorealistic model of an outcrop in order to log stratigraphic data directly onto the 3D model. The ability to interact with a 3D photorealistic model of an outcrop in the field or lab provides multiple opportunities for analysis of the stratigraphy being examined and provides long-term data archive capacity for stratigraphic information such as sample position, lithostratigraphic boundary pick

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9

Fichter, Lynn Stanton. "Design and Use of the Stratigraphic Strip Log." Journal of Geological Education 35, no. 2 (1987): 71–80. http://dx.doi.org/10.5408/0022-1368-35.2.71.

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10

Munsterman, D. K., R. M. C. H. Verreussel, H. F. Mijnlieff, N. Witmans, S. Kerstholt-Boegehold, and O. A. Abbink. "Revision and update of the Callovian-Ryazanian Stratigraphic Nomenclature in the northern Dutch offshore, i.e. Central Graben Subgroup and Scruff Group." Netherlands Journal of Geosciences - Geologie en Mijnbouw 91, no. 4 (2012): 555–90. http://dx.doi.org/10.1017/s001677460000038x.

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AbstractExploration in a mature basin requires a detailed classification and standardisation of rock stratigraphy to adequately comprehend the depositional history and prospect architecture. The pre-Quaternary Stratigraphic Nomenclature of the Netherlands compiled by Van Adrichem Boogaert & Kouwe in 1993 provided a consistent framework for use by the Dutch geological community. Over the past twenty years, new biostratigraphic techniques and continued exploration in the Netherlands have provided additional stratigraphic information. Based on this information the Late Jurassic lithostratigra

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11

Yogi, Ade. "Petrophysics Analysis for Reservoir Characterization of Cretaceous Clastic Rocks: A Case Study of the Arafura Basin." Jurnal Geologi dan Sumberdaya Mineral 21, no. 3 (2020): 129. http://dx.doi.org/10.33332/jgsm.geologi.v21i3.527.

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This study presents petrophysics analysis results from two wells located in the Arafura Basin. The analysis carried out to evaluate the reservoir characterization and its relationship to the stratigraphic sequence based on log data from the Koba-1 and Barakan-1 Wells. The stratigraphy correlation section of two wells depicts that in the Cretaceous series a transgression-regression cycle. The petrophysical parameters to be calculated are the shale volume and porosity. The analysis shows that there is a relationship between stratigraphic sequences and petrophysical properties. In the study area,

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12

Alege, T. S. "Sequence Stratigraphic Evaluation of Sediments Domicile in Day Field Located in the Onshore Central Swamp Depobelt of the Niger Delta, Nigeria." Journal of Applied Sciences and Environmental Management 26, no. 6 (2022): 1129–35. http://dx.doi.org/10.4314/jasem.v26i6.20.

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This study employs the tool of sequence stratigraphy to evaluate Day Field, in the Onshore Niger Delta of Nigeria for hydrocarbon predictions using six (6) well logs displayed at standard scales to enhance log trends for lithologic and stratal package delineation. The identified key stratigraphic bounding surfaces were tied to well-defined palynological (P) zone and foraminiferal (F) zones with the aid of the biostratigraphic data and calibrated using the Niger Delta Chronostratigraphic chart. Five (5) MFSs (34.0, 33.0, 31.3, 28.1, and 26.2 Ma) and six (6) SBs (35.4, 33.3, 32.4, 29.3, 27.3, an

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13

Richmond, Dean. "Stratigraphy, sedimentology, and paleoclimatic proxies of the Upper Jurassic Morrison Formation of central Montana: Geology of the Intermountain West." Geology of the Intermountain West 10 (October 17, 2023): 223–76. http://dx.doi.org/10.31711/giw.v10.pp223-276.

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Since the discovery of dinosaurs in the late 19th century, the Upper Jurassic Morrison Formation has received considerable scholarly attention. However, the formation in central Montana needed to be sufficiently investigated. Recent dinosaur excavations from exposed Morrison strata on the southern flank of Spindletop dome near the town of Grass Range, Montana, prompted a review of the formation’s geology, paleobotany, and paleoclimate. A review of historical stratigraphic measurements of the formation in Montana reveals a considerable variance in measured thicknesses. Stratigraphic measurement

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14

Li, Cun Lei, Lei Qin, Xue Li, and Xi Long Zhang. "High Resolution Sequence Stratigraphic Frameworks Research in the XII Group of the Member III of Qing Shankou Formation in the Qian'an Oilfield." Applied Mechanics and Materials 339 (July 2013): 728–31. http://dx.doi.org/10.4028/www.scientific.net/amm.339.728.

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With the instruction of the high resolution sequence stratigraphy and sedimentology theory, and the comprehensive application of 11 wells core, more than 800 mud logging and log data, high resolution sequence stratigraphic characteristics research in the XII Group of the Member III of Qing Shankou Formation in the Qianan oilfield has been finished. The results show that the study area can be divided into one middle-term base level cycle and five short-term base level cycles. The only sequence structure of middle term cycle is (B type) and the short term cycle mainly consists of B types meanwhi

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15

Wibowo, Handoko Teguh, Bambang Prastistho, C. Prasetyadi, and Dwi Fitri Yudiantoro. "Reanalysis LUSI Stratigraphic Based on Cutting of Banjarpanji#1 Well." Journal of Earth and Marine Technology (JEMT) 3, no. 1 (2022): 11–18. http://dx.doi.org/10.31284/j.jemt.2022.v3i1.3602.

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The subsurface configuration or stratigraphy of the Sidoarjo Hot Mudflow (Lumpur Sidoarjo/LUSI) is used to see what formations are transported out and how the material properties can be known from the well log data of Banjarpanji#1 or BJP#1 well. There is something unusual about the BJP#1 log, namely the presence of solid volcanic sandstone at a depth of 6000-9297 ft where drilling ended. This abnormality was investigated by reanalyzing volcanic sandstone by reading the well log data which is drilling data during the exploration of the Banjarpanji-1 well by PT. Lapindo Brantas, Inc. which cons

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16

Banik, N. C., I. Lerche, J. R. Resnick, and R. T. Shuey. "Stratigraphic filtering, Part II: Model spectra." GEOPHYSICS 50, no. 12 (1985): 2775–83. http://dx.doi.org/10.1190/1.1441898.

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We describe filtering by short‐period multiples in one dimension using a combination of the O’Doherty‐Anstey (1971) formula with a stochastic model in which the autocorrelation of acoustic impedance decreases exponentially with lag [Formula: see text] while the spectrum of reflection coefficients rises with frequency up to a corner, then is approximately constant, [Formula: see text] An impedance log with these statistics is a generalization of the classic random telegraph wave. The parameter [Formula: see text], the mean‐square fractional fluctuation of impedance, is typically less than 1 per

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17

Chajin-Ortiz, Patricia, Erick J. Illidge, and Sait Khurama. "Submarine canyon-fill reconstruction from integrated seismic-stratigraphic analysis – application to Banquereau formation, Scotian basin – offshore Canada." CT&F - Ciencia, Tecnología y Futuro 9, no. 2 (2019): 37–52. http://dx.doi.org/10.29047/01225383.119.

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Building geological models (integrating stratigraphic, structural and paleo-environmental 3D models) that allow the interpretation of sand bodies deposited by turbidity currents along submarine canyons or channels, is one of the most useful tools used by geoscientists for the definition of new drilling opportunities in both exploration and development phases. In this context, the integration of methodologies such as sequence stratigraphyand seismic attributes, together with well-log and core information, outline the basis for the interpretation of sand-body lithostratigraphy and chronostratigr

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18

Doveton, John H. "Lithofacies and geochemical facies profiles from nuclear wire-line logs: New subsurface templates for sedimentary modeling." Bulletin (Kansas Geological Survey), no. 233 (April 16, 2024): 101–10. https://doi.org/10.17161/kgsbulletin.no.233.20451.

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The use of wire-line logs in subsurface studies is all too often restricted to the correlation of selected stratigraphic horizons. There is an increasing content of valuable geologic information in modern wire-line logs that can be extracted by simple computer processing. The resulting log transformations provide lengthy and continuous records of sections of interest. Examples of these methods, as applied to Cretaceous and Permian stratigraphic case studies, are described here. The log data can be incorporated in either forward- or reverse-modeling modes in the simulation and analysis of sedim

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19

Olson, Hilary Clement, John W. Snedden, and Robert Cunningham. "Development and application of a robust chronostratigraphic framework in Gulf of Mexico Mesozoic exploration." Interpretation 3, no. 2 (2015): SN39—SN58. http://dx.doi.org/10.1190/int-2014-0179.1.

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Renewed interest in Mesozoic exploration, onshore and offshore, in the Gulf of Mexico (GOM) has precipitated a new look at Mesozoic biostratigraphy and how these age-diagnostic bioevents can help to establish a sequence-stratigraphic framework for the basin. We have developed a new chronostratigraphic framework, primarily founded on biostratigraphic age-diagnostic data, specifically developed for Mesozoic strata of the GOM basin. Our goal was to provide a systematic and consistent framework that serves as a reference for the order and timing of depositional sequences and key surfaces in the GO

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20

Schneiderwind, Sascha, Jack Mason, Thomas Wiatr, Ioannis Papanikolaou, and Klaus Reicherter. "3-D visualisation of palaeoseismic trench stratigraphy and trench logging using terrestrial remote sensing and GPR – a multiparametric interpretation." Solid Earth 7, no. 2 (2016): 323–40. http://dx.doi.org/10.5194/se-7-323-2016.

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Abstract. Two normal faults on the island of Crete and mainland Greece were studied to test an innovative workflow with the goal of obtaining a more objective palaeoseismic trench log, and a 3-D view of the sedimentary architecture within the trench walls. Sedimentary feature geometries in palaeoseismic trenches are related to palaeoearthquake magnitudes which are used in seismic hazard assessments. If the geometry of these sedimentary features can be more representatively measured, seismic hazard assessments can be improved. In this study more representative measurements of sedimentary featur

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21

Arditto, P. A. "THE EASTERN OTWAY BASIN WANGERRIP GROUP REVISITED USING AN INTEGRATED SEQUENCE STRATIGRAPHIC METHODOLOGY." APPEA Journal 35, no. 1 (1995): 372. http://dx.doi.org/10.1071/aj94024.

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Recent exploration by BHP Petroleum in VIC/ P30 and VIC/P31, within the eastern Otway Basin, has contributed significantly to our understanding of the depositional history of the Paleocene to Eocene siliciclastic Wangerrip Group. The original lithostratigraphic definition of this group was based on outcrop description and subsequently applied to onshore and, more recently, offshore wells significantly basinward of the type sections. This resulted in confusing individual well lithostratigraphies which hampered traditional methods of subsurface correlation.A re-evaluation of the Wangerrip Group

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22

Konstantinova, Larisa N., Igor A. Gubin, Sergey A. Moiseev, Andrey M. Fomin, and Elena N. Kuznetsova. "CORRELATION RESULTS OF THE PROTEROZOIC-PHANEROZOIC SECTIONS OF THE ALDAN-MAYA OIL AND GAS BEARING REGION ON DEEP DRILLING DATA." Interexpo GEO-Siberia 2, no. 1 (2021): 102–10. http://dx.doi.org/10.33764/2618-981x-2021-2-1-102-110.

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The article discusses the controversial issues of well log correlation of the Riphean, Vendian, Cambrian and Mesozoic sequences, which is prospects for oil and gas within the Aldan-Maya petroleum region. The author's version of the stratigraphic correlation is based on the interpretation of logging data, seismic surveys, core description, archival and published materials. The results obtained can be used for stratigraphic picks correction and structural maps plotting.

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23

Craigie, Neil W. "Definition of the Hercynian Unconformity in eastern Saudi Arabia using chemostratigraphy in conjunction with biostratigraphy, sedimentology and lithostratigraphy." Petroleum Geoscience 26, no. 4 (2019): 568–88. http://dx.doi.org/10.1144/petgeo2019-116.

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The following chemostratigraphy study was conducted on Paleozoic sediments encountered in 14 wells in eastern Saudi Arabia. A total of 1500 samples were analysed by inductively coupled plasma optical emission spectrometry (ICP-OES) and inductively coupled plasma mass spectrometry (ICP-MS), with data acquired for 48 elements, ranging from Na to U in the periodic table. The aim was to utilize chemostratigraphy, in conjunction with existing biostratigraphic, lithostratigraphic and sedimentological data, to define the Hercynian Unconformity in each well and to recognize stratigraphic boundaries oc

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24

Karima, Dani Rizki, and Agus Guntoro. "ANALISIS SIKUEN STRATIGRAFI BERDASARKAN DATA LOG LAPANGAN “DRK” CEKUNGAN JAWA TIMUR UTARA." Jurnal Eksakta Kebumian 3, no. 1 (2023): 7–12. https://doi.org/10.25105/jek.v3i1.16109.

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ABSTRAK Daerah penelitian terletak di Lapangan “DRK” yang berada pada Zona Rembang, Cekungan Jawa Timur Utara. Penelitian ini dilakukan untuk menganalisis kondisi bawah permukaan melalui korelasi sumur dan analisis perkembangan distribusi sedimentasi pada Cekungan Jawa Timur Utara. Penelitian ini menggunakan lima data sumur. Analisis Sikuen Stratigrafi didasarkan dari data log, dimana hasil dari analisis Sikuen Stratigrafi ini dapat diinterpretasikannya Fasies dan Lingkungan Pengendapan pada daerah penelitian. Kata kunci: Cekungan Jawa Timur Utara; Korelasi Sumur; Sikuen Stratigrafi; Zona Remb

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25

Schneiderwind, S., J. Mason, T. Wiatr, I. Papanikolaou, and K. Reicherter. "3-D visualisation of palaeoseismic trench stratigraphy and trench logging using terrestrial remote sensing and GPR – combining techniques towards an objective multiparametric interpretation." Solid Earth Discussions 7, no. 3 (2015): 2697–733. http://dx.doi.org/10.5194/sed-7-2697-2015.

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Abstract. Two normal faults on the Island of Crete and mainland Greece were studied to create and test an innovative workflow to make palaeoseismic trench logging more objective, and visualise the sedimentary architecture within the trench wall in 3-D. This is achieved by combining classical palaeoseismic trenching techniques with multispectral approaches. A conventional trench log was firstly compared to results of iso cluster analysis of a true colour photomosaic representing the spectrum of visible light. Passive data collection disadvantages (e.g. illumination) were addressed by complement

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26

Weston, Janice F., R. Andrew MacRae, Piero Ascoli, et al. "Re-evaluation of the Mesozoic–Cenozoic biostratigraphy of the Laurentian Subbasin of the Scotian Basin, offshore eastern Canada." Atlantic Geoscience 59 (November 24, 2023): 183–239. http://dx.doi.org/10.4138/atlgeo.2023.009.

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We use new and existing nannofossil, palynological, and microfossil biostratigraphic data in conjunction with lithologic and geophysical logs from four wells to establish a series of sequence-stratigraphic events in the Mesozoic–Cenozoic of the Laurentian Subbasin of offshore Newfoundland, eastern Canada. Well biostratigraphic events are integrated with reflection seismic in the area to correlate regional seismic stratigraphic surfaces. The four wells are: Bandol-1, Emerillon C-56, East Wolverine G-37, and Heron H-73. We extend the event stratigraphic scheme previously developed for the Scotia

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27

Madsen, Henrik, and Ole R. Clausen. "Generation of accomodation space around the D-1 fault during the Oligocene, Danish North Sea." Danmarks Geologiske Undersøgelse Serie C 12 (December 31, 1995): 69–83. http://dx.doi.org/10.34194/seriec.v12.7110.

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Implications of a sequence stratigraphic study of the Oligocene sediments in the Norwegian-Danish Basin around the D-1 well are presented. The study is based on seismic mapping, log interpretations and detailed dating. This paper focuses on the evolution of the accommodation space along and across the D-1 fault since the fault generated deviations in the available accommodation space and has a significant influence on the depositional geometry of the sequences. The results show that displacement across the D-1 is fairly constant along strike during deposition of the older Oligocene sequences.

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RU, Ideozu. "Comparative Studies of Ekenkpon Shale Subsurface Distribution in the Calabar Flank." Petroleum & Petrochemical Engineering Journal 8, no. 3 (2024): 1–8. http://dx.doi.org/10.23880/ppej-16000395.

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The Ekenkpon Shale is one of the Cretaceous sequences of the Calabar Flank with the structural and subsurface facies studied in terms of their distribution and lateral. Materials used in this research are processed seismic and well log data from Wells A, B and C drilled within the study area. The procedure adopted was to compare the structural and stratigraphic analysis of previous and current research carried out in the study area. Well log data were viewed matched with processed seismic data. Composite stratigraphic section generated showed correlatable the Ekenkpon Shale facies, their later

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Budyak, A. E., Yu I. Tarasova, N. A. Goryachev, et al. "ORE MINERALIZATION OF THE OZHEREL’E DEPOSIT: COMPARISON WITH OBJECTS OF THE “SUKHOI LOG” TYPE." Доклады Российской академии наук. Науки о Земле 509, no. 2 (2023): 198–207. http://dx.doi.org/10.31857/s268673972260223x.

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Within the Lena gold province, in addition to the well-known large-volume gold deposits of the “Sukhoi Log” type, such as Sukhoi Log, Verninskoye, etc. there are a number of objects that differ significantly in stratigraphic, mineralogical-petrographic, isotopic, geochemical characteristics and the volume of reserves. The most famous of them is the Necklace deposit. The article shows the main characteristics of the Ozherel’e deposit, highlighting its similar and distinctive features with deposits of the “Sukhoi Log” type. The results obtained in the course of mineralogical-petrographic and iso

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Shehab, Mayssa, Fahad Al-Najm, and Mohammed Al-Kaabi. "Image Log Facies and Lost Circulation of the Dammam Formation in Rumaila Oil Field, Southern Iraq." Iraqi Geological Journal 56, no. 1C (2023): 150–68. http://dx.doi.org/10.46717/igj.56.1c.10ms-2023-3-21.

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One of the most useful logging tools for identifying losses and fractures is Formation Micro Imager. Drilling through the Dammam Formation is typically associated with substantial nonproductive time due to severe and often entire drilling fluid losses. The majority of remedy this problem require time for preparation, placement or setting. Combining between conventional well log and FMI log associated with drilling data, a special study of the shallow Dammam carbonate formation penetrate by wells is accomplished. For a better understanding of the loss mechanism, Image log study was highlighted

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Hull, J. N. F., S. A. Smith, and H. C. Young. "SEQUENCE STRATIGRAPHIC INTERPRETATION OF CARBONATE WIRELINE LOG MOTIFS: AN EXAMPLE FROM THE NORTH WEST SHELF OF AUSTRALIA." APPEA Journal 38, no. 1 (1998): 188. http://dx.doi.org/10.1071/aj97010.

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An integrated biostratigraphic, wireline and seismic sequence stratigraphic study has been conducted to constrain the timing and evolution of Late Cretaceous to Tertiary depocentres along the North West Shelf of Australia. During this study a model for the sequence stratigraphic interpretation of wireline logs in this carbonate-dominated regime has been developed.A series of readily identifiable, lowstand clastic deposits interspersed within the predominantly carbonate passive margin section of the North West Shelf provide well-defined correctable events with which to divide the section. Biost

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He, Ping, Shangfeng Zhang, Enze Xu, and Chunxia Zhu. "Milankovitch cycles and the astronomical time scale of the Zhujiang Formation in the Baiyun Sag, Pearl River Mouth Basin, China." Open Geosciences 14, no. 1 (2022): 1380–92. http://dx.doi.org/10.1515/geo-2022-0434.

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Abstract The Zhujiang Formation in the Baiyun Sag, Pearl River Mouth Basin, China, is formed primarily in a deep-water continental slope environment. Its chronostratigraphic framework is based on biostratigraphy and sequence stratigraphy, and its geological dating is based on micropaleontological data. This makes it difficult to obtain precise absolute ages for various geological events. In this study, gamma ray (GR) well log data from Wells Y1, Y2, and Y3 were used as paleoclimate proxies, and spectral and wavelet analyses were used to conduct cyclostratigraphic research. The results show tha

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Xu, Jingling, Luofu Liu, Yuxing Qin, and Jianbo Zhang. "Frequency trend attribute analysis for stratigraphic division and correlation." GEOPHYSICS 80, no. 1 (2015): IM1—IM9. http://dx.doi.org/10.1190/geo2013-0304.1.

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Stratigraphic sequence interpretation and correlation are part of basic geologic research, but present frequent problems such as subjective and accurate division and correlation of sequence cycles, and a multiplicity of solutions to high-frequency sequences. We developed a novel method, termed frequency trend attribute analysis (FTAA), to solve these problems and improve the accuracy of division. The method was based on maximum entropy spectrum analysis data, built on theoretical foundations, and tested on geologic models as well as empirical data. We developed examples of how FTAA can improve

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Tellez, Javier, Matthew J. Pranter, Carl Sondergeld, et al. "Mechanical stratigraphy of Mississippian strata using machine learning and seismic-based reservoir characterization and modeling, Anadarko Basin, Oklahoma." Interpretation 9, no. 2 (2021): SE53—SE71. http://dx.doi.org/10.1190/int-2020-0167.1.

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The Sooner Trend in the Anadarko (Basin) in Canadian and Kingfisher counties play primarily produces oil and gas from Mississippian strata. The interval consists of interbedded argillaceous mudstones and calcareous siltstones. Such a contrast in rock composition is linked directly to the mechanical stratigraphy of the strata. Brittle (calcareous siltstones) and ductile beds (argillaceous mudstones) are related to the sequence-stratigraphic framework at different scales. We have used seismic and well-log data to estimate and map the geomechanical properties’ distribution and interpret the mecha

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Turner, Bryan W., Carlos E. Molinares-Blanco, and Roger M. Slatt. "Chemostratigraphic, palynostratigraphic, and sequence stratigraphic analysis of the Woodford Shale, Wyche Farm Quarry, Pontotoc County, Oklahoma." Interpretation 3, no. 1 (2015): SH1—SH9. http://dx.doi.org/10.1190/int-2014-0089.1.

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Understanding mudrocks and shale reservoirs has become a significant area of interest within industry and academia in recent years. Of particular interest is understanding the pervasive variability present within these units. This variability became apparent when conventional approaches, such as lithostratigraphic analysis and well log correlation, were coupled with recent developments in palynostratigraphy and chemostratigraphy. A single shallow Woodford Shale research core in the western Arkoma Basin from Pontotoc County, Oklahoma, was used to identify three scales of stratigraphic cyclicity

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Arditto, Peter A. "DEPOSITIONAL SEQUENCE MODEL FOR THE POST-BARROW GROUP NEOCOMIAN SUCCESSION, BARROW AND EXMOUTH SUB-BASINS, WESTERN AUSTRALIA." APPEA Journal 33, no. 1 (1993): 151. http://dx.doi.org/10.1071/aj92012.

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Structural traps at the top 'Barrow Group' are the most successful oil exploration targets in the Barrow/Exmouth Sub-basins. However, a reinterpretation of recent exploration activities undertaken by BHP Petroleum Pty Ltd, combined with regional investigations on the Exmouth Plateau, has cast doubt on the validity of accepted stratigraphic nomenclature for the Neocomian succession. A more geologically rational subdivision of the upper part of the Neocomian succession into two discrete sequence stratigraphic units is proposed.Key seismic data from the Exmouth Plateau, tied into wells with good

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Sarkar, Supratik, Sumit Verma, and Kurt J. Marfurt. "Seismic-petrophysical reservoir characterization in the northern part of the Chicontepec Basin, Mexico." Interpretation 4, no. 3 (2016): T403—T417. http://dx.doi.org/10.1190/int-2015-0168.1.

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The Chicontepec Formation in east-central Mexico is comprised of complex unconventional reservoirs consisting of low-permeability disconnected turbidite reservoir facies. Hydraulic fracturing increases permeability and joins these otherwise tight reservoirs. We use a recently acquired 3D seismic survey and well control to divide the Chicontepec reservoir interval in the northern part of the basin into five stratigraphic units, equivalent to global third-order seismic sequences. By combining well-log and core information with principles of seismic geomorphology, we are able to map deepwater fac

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Franchini, Stefania, Francesco Maria De Filippi, Maurizio Barbieri та Giuseppe Sappa. "γ-Ray Log Tool for Detecting the Presence of Low-Permeability Lenses in High-Resolution Modelling of Contaminated Sites". Water 15, № 20 (2023): 3590. http://dx.doi.org/10.3390/w15203590.

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In contaminated sites, remediation measures mostly depend on previous high-resolution site characterization (HRSC) results. In the case of industrial sites, where there is a high pollution risk for groundwater, many hydrogeological models are often achieved using stratigraphy results of geological drilling after the monitoring network design. This approach is only sometimes possible when contaminant back diffusion from small low-permeability lenses and layers occurs within a high-permeability aquifer. This framework needs a significant resolution that can be obtained by coupling preliminary st

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Gregersen, Ulrik, and Olaf Michelsen. "A stratigraphic interpretation of the Oxfordian-Valaginian deposits in the Danish Subbasin." Danmarks Geologiske Undersøgelse Serie C 12 (December 31, 1995): 125–36. http://dx.doi.org/10.34194/seriec.v12.7114.

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Six sequences are identified in the Upper Jurassic and lowermost Cretaceous Flyvbjerg-, Børglum- and Frederikshavn Formations of the Danish Subbasin. Sequence boundaries and maximum flooding surfaces are interpreted on the basis of log analysis, biostratigraphy and lithology of core samples. Parasequences and parasequence sets are mainly recognized in shallow marine sediments. The gamma ray and SP logs of the sequences have an overall cyclic character, indicating the presence of upward fining deposits overlain by upward coarsening deposits. A blocky log pattern or an upward decreasing trend lo

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Weston, Janice F., R. Andrew MacRae, Piero Ascoli, et al. "A revised biostratigraphic and well-log sequence-stratigraphic framework for the Scotian Margin, offshore eastern Canada 1This article is one of a series of papers published in this CJES Special Issue on the theme of Mesozoic–Cenozoic geology of the Scotian Basin. 2Earth Sciences Sector Contribution 20120137." Canadian Journal of Earth Sciences 49, no. 12 (2012): 1417–62. http://dx.doi.org/10.1139/e2012-070.

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In this study, we build on a foundation of previous biostratigraphic studies for the Scotian Basin, offshore eastern Canada, by conducting new quantitative multidisciplinary biostratigraphic studies of the Mesozoic sections in eight wells: Bonnet P-23, Chebucto K-90, Cohasset L-97, Glenelg J-48, Glooscap C-63, Mohican I-100, South Desbarres O-76, and South Griffin J-13. These wells were chosen to provide good spatial coverage, stratigraphic penetration, and correlation with the seismic grid. We have also evaluated pre-existing biostratigraphic data and undertaken the well-log sequence-stratigr

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Molua, Collins O. "UNDERSTANDING THE GAMMA RAY LOG AND ITS SIGNIFICANCE IN FORMATION ANALYSIS." Earth Sciences Pakistan 8, no. 2 (2024): 90–95. https://doi.org/10.26480/esp.02.2024.90.95.

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Gamma-ray log interpretation is an exploration technique that provides significant information about lithology, mineral constituents, pore size, and water content during oil and gas exploration. This study uses gamma-ray log analysis to identify lithology, discriminate faults and fractures, and estimate water saturation and porosity in the Nigerian petroleum region. We acquired gamma-ray logs using specialized logging equipment fitted with scintillation detectors. The raw data was processed and calibrated to obtain gamma-ray values in API units. Interpretation involved comparing measured value

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Croon, Marcel, Joshua Bluett, Luke Titus, and Raymond Johnson. "Formation evaluation case study: Glyde unconventional Middle Proterozoic play in the McArthur Basin, northern Australia." APPEA Journal 55, no. 2 (2015): 429. http://dx.doi.org/10.1071/aj14064.

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The Glyde–1 and Glyde Sidetrack–1 wells were drilled by Armour Energy in the Glyde Sub-basin of the McArthur Basin, NT, Australia in August 2012. This program was to evaluate the unconventional hydrocarbon potential of the Barney Creek Shale source rock and the conventional potential of the Coxco Dolomite of the McArthur Group. The Glyde wells discovered gas in both formations. Transtensional faults in this region allowed to form a series of fault-bounded depocentres. The target gas source of the Glyde discovery is located in 1640 Ma organic-rich black shales of the Barney Creek Formation. Wea

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Nainggolan, T. B., U. Nurhasanah, and I. Setiadi. "Depositional sequence interpretation using seismic and well data of offshore Central Sumatra Basin." IOP Conference Series: Earth and Environmental Science 944, no. 1 (2021): 012002. http://dx.doi.org/10.1088/1755-1315/944/1/012002.

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Abstract Offshore Central Sumatra Basin is an integral part of Central Sumatra Basin known for producing hydrocarbon basins. The derivation of stratigraphic study of seismic and well data is intended to improve accuracy of geological interpretation. Sequence stratigraphy studies have a significant role in exploratory studies to determine which depositional sequence can be inferred as hydrocarbon reservoir and its correlation in petroleum system. This study aims to identify biogenic gas sequential interpretation using seismic and well data of offshore Central Sumatra Basin. The procedure to ana

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Crow, Heather L., James A. Hunter, Laura C. Olson, André J. M. Pugin, and Hazen A. J. Russell. "Borehole geophysical log signatures and stratigraphic assessment in a glacial basin, southern Ontario." Canadian Journal of Earth Sciences 55, no. 7 (2018): 829–45. http://dx.doi.org/10.1139/cjes-2017-0016.

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Over the past two decades, the Geological Survey of Canada has used a standardized suite of slim-hole geophysical tools to log 57 polyvinyl chloride cased boreholes drilled in the glacial sediments of southern Ontario. This article documents downhole tool responses (natural gamma, apparent conductivity, magnetic susceptibility, and seismic velocity) in the context of mineralogical characteristics of the region and grain-size data from 28 of the 57 boreholes. Characteristic geophysical properties and (or) patterns are identified within the units of a regional hydrostratigraphic framework in sou

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Kazanenkov, Valery. "FACIAL ZONING OF MALYSHEV FORMATION (MIDDLE JURASSIC) IN WEST SIBERIAN BASIN." Interexpo GEO-Siberia 2, no. 1 (2019): 66–72. http://dx.doi.org/10.33764/2618-981x-2019-2-1-66-72.

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The facial zoning of the Malyshevsky horizon in Western Siberia was proposed. It was based on the unification of well log sections. Furthermore, all the possible macro- and microfauna, spore-pollen complexes, floristic residues and microphytoplankton data from this stratigraphic interval are taken into account during the plotting of the facial scheme. As well the results of the paleogeographic reconstructions at the Malyshev time were considered.

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Li, Qing, Xuelian You, Yu He, Yuan Zhou, Renzhi Tang, and Jiangshan Li. "The Sequence Stratigraphy and Sedimentary Evolution of the Guantao Formation in the Binxian Uplift Area, Bohai Bay Basin, China." Applied Sciences 14, no. 6 (2024): 2518. http://dx.doi.org/10.3390/app14062518.

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Due to the influence of multiple tectonic movements in rift basins, the sequence and sedimentary filling modes of continental petroleum reservoirs are complex, which makes it difficult to establish isochronous stratigraphic frameworks and thus affects the accuracy of subsequent predictions of effective sand bodies. Taking the Guantao Formation of the Binxian uplift and the surrounding areas as an example, this study established the sequence stratigraphic framework of the Guantao Formation and discussed the controlling effect of sequence stratigraphy on sedimentary filling. According to a combi

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Al-Masgari, Abd Al-Salam, Mohamed Elsaadany, Numair A. Siddiqui, et al. "Geomorphological Geometries and High-Resolution Seismic Sequence Stratigraphy of Malay Basin’s Fluvial Succession." Applied Sciences 11, no. 11 (2021): 5156. http://dx.doi.org/10.3390/app11115156.

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This study identified the Pleistocene depositional succession of the group (A) (marine, estuarine, and fluvial depositional systems) of the Melor and Inas fields in the central Malay Basin from the seafloor to approximately −507 ms (522 m). During the last few years, hydrocarbon exploration in Malay Basin has moved to focus on stratigraphic traps, specifically those that existed with channel sands. These traps motivate carrying out this research to image and locate these kinds of traps. It can be difficult to determine if closely spaced-out channels and channel belts exist within several seism

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Neal, J. E., J. A. Stein, and J. H. Gamber. "Graphic correlation and sequence stratigraphy in the Palaeogene of NW Europe." Journal of Micropalaeontology 13, no. 1 (1994): 55–80. http://dx.doi.org/10.1144/jm.13.1.55.

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Abstract. A sequence stratigraphic analysis of well log, seismic, and biostratigraphic data has documented a pattern of cyclic sedimentation for the Palaeogene of the Central North Sea. Previously published research has also documented cyclic sedimentation related to sea level changes. Integrating Central North Sea subsurface sections with Palaeogene outcrop from NW Europe, using sequence stratigraphic first principles and the graphic correlation method, has produced a chronostratigraphic framework for the Palaeogene of NW Europe.Northwestern Europe basins (London–Hampshire, Paris, and Belgian

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Mudge, W. J., and A. B. Thomson. "THREE-DIMENSIONAL GEOLOGICAL MODELLING IN THE KINGFISH AND WEST KINGFISH OIL FIELDS: THE METHOD AND APPLICATIONS." APPEA Journal 30, no. 1 (1990): 342. http://dx.doi.org/10.1071/aj89022.

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RESMAP is an Exxon proprietary program that makes possible the building of three-dimensional geological models. The models consist of millions of tabular cells contained within a stratigraphic framework. The models are generated by the integration of log analysis, seismic interpretation and the geologist's well picks and interpretation.RESMAP models are easy to access for generating structural and stratigraphic geological cross-sections. Maps such as structure, top of porosity and net sand percentage can be generated as well as subcrop and supercrop maps. Hydrocarbon-in-place estimates are als

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Alcolea Rodríguez, Andrés, Paul Marschall, Christophe Nussbaum, and Jens Karl Becker. "Automatic interpretation of geophysical well logs." Geological Society, London, Special Publications 482, no. 1 (2018): 25–38. http://dx.doi.org/10.1144/sp482.9.

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AbstractStratigraphic sequences in boreholes are commonly estimated by interpreting combinations of well logs. The interpretation is generally tedious and is made some time after log completion, which often leads to a loss of valuable first-hand information gathered on-site. This may lead to delayed or potentially poor on-site decisions. To make things worse, the standard interpretation of well logs is, at least to a certain degree, subjective and based on the manipulation of data, which may be difficult to trace in the long term. Small changes in lithology are often disregarded and alternatin

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