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The AAPG/Datapages Combined Publications Database

Showing 85,821 Results. Searched 200,619 documents.

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A Porosity Based Pore Pressure Estimation in an Indonesian Carbonate Reservoir

Sunawar Kunaifi, Krishna Pratama Laya, Sarvagya Parashar, Luqman, Banu Andhika

Indonesian Petroleum Association

... porosity Pore pressure from Resistivity Derivation The determination of porosity in rock formations is essential for evaluating their suitability...

2024

Chapter 21: Log-Derived Indicator of Thermal Maturity, Niobrara Formation, Denver Basin, Colorado, Nebraska, Wyoming

Thomas M. Smagala, Charles A. Brown, Gary L. Nydegger

Rocky Mountain Association of Geologists

... = resistivity of the formation (ohm-meters) RW = resistivity of the formation water (ohm-meters) ø = pore space m and n = empirical exponents SW = water...

2011

A New Method for Volume of Shale Evaluation Using the Well Log Resistivity Invasion Profile

Robert K. Svec

GCAGS Transactions

... in the drilling mud and the formation water, as well as application with various types and vintages of resistivity logging tools. The workflow to process...

2025

How Should We Measure Residual-Oil Saturation?

R. E. Wyman

CSPG Bulletin

... method for determination of oil-in-place and connate water: API Drilling and Production Practice p. 166-174. 3Keelan, Dare K., 1972, Core analysis...

1977

Characterizing mudstones and fault structure in Bumita Quarry, Perlis through integrated geophysical techniques

Nordiana Mohd Muztaza, Hazrul Hisham, Teoh Ying Jia, Muhammad Taqiuddin Zakaria, Nur Azwin Ismail, Mohd Firdaus Md Dan, Azlan Md Dan M.F. M., Taiwo Adewumi

Geological Society of Malaysia (GSM)

... techniques permeability, while water immersion under vacuum was utilized for porosity determination. Additionally, the rock samples were transported...

2024

The Dual-Spacing TDT: A Cased-Hole Exploration Tool

B. F. McGhee, J. S. Blackburn, B. C. Leach

GCAGS Transactions

...------------------------ FIGURE 2. Correlation of Dual-Spacing TDT to an Open-Hole Resistivity Log. End_Page 237------------------------ Water Saturation The primary...

1974

Geophysical Techniques for Evaluating the Internal Structure of Cheniers, Southwestern Louisiana

Robbie R. Zenero , David L. Seng , Mark R. Byrnes , Randolph A. McBride

GCAGS Transactions

..., at the interface with adjacent or subsurface fine-grained deposits, clay and/or conductive pore water limit penetration. Electrical resistivity...

1995

Organic matter pores and oil generation in the Tuscaloosa marine shale

Jiemin Lu, Stephen C. Ruppel, and Harry D. Rowe

AAPG Bulletin

..., 1981). During the process, nonconductive hydrocarbons begin to displace conductive pore water. Consequently, formation resistivity increases from...

2015

Reservoir Characterization Derived from Advanced Logging Techniques in Vertical and Horizontal Wells of Lacustrine Shale Oil Reservoir in China

Zuo An Zhao, Ke Yu Pan, Shou Song Chen, Yue Wang, Liang Cai, Feng Pan, Jin Long Wu

Unconventional Resources Technology Conference (URTEC)

..., induced gammaray spectroscopy, and borehole micro-resistivity imaging to characterize lacustrine shale oil reservoirs. By integrating source rock...

2025

Estimate of Lithology and Net Gas Sand from Wireline Logs: Veracruz and Macuspana Basins, Mexico

Sakurai, Shinichi, Grimaldo-Suarez, F. M., Aguilera-Gomez, L. E., Rodriguez-Larios, J. A.

GCAGS Transactions

...-pressure data, computed porosity, water saturation, and well-test results. Valid test results are essential for pay determination. Mechanical diagrams...

2002

2D Resistivity Imaging Investigation of Long Point, Katy-Hockley, Tomball, and Pearland Faults, Houston, Texas

Mustafa Saribudak

GCAGS Transactions

... by water content, mineralogy, interstitial fluid salinity, porosity, and the presence of conductive materials. Thus, a resistivity anomaly should...

2012

Low Resistivity Reservoir Study: Sangatta Field Kalimantan

Suwardji, Ari Buhari, Kuncoro Kukuh, Ron Prayitno

Indonesian Petroleum Association

... importance. This knowledge forms the basic parameter used in formation evaluation for determination of water saturation. Detrital coal...

1994

Estimation of Interparticle and Separate-Vug Porosities from Resistivity and Total-Porosity Logs

Jeffrey A. Kane

West Texas Geological Society

... (Archie, 1942) relates porosity (Φ), water saturation (Sw), in situ water resistivity (Rw), and bulk resistivity (Rt) by (1) S w n =   R w / ( ϕ m...

2003

Borehole Imaging in the Permian Basin

Lee Sanders, Kevan Fuchs

West Texas Geological Society

... as reflected on the borehole wall. This method of micro-resistivity analysis can then be used in defining depositional facies in sedimentary rocks...

2003

Incorporating capillary pressure, pore throat aperture radii, height above free-water table, and Winland r35 values on Pickett plots

Roberto Aguilera

AAPG Bulletin

...., 1966, A review of current techniques for determination of water saturation from logs: Journal of Petroleum Technology, v. 18, p. 1425-1433. Pickett, G...

2002

A Guide to Qualitative Interpretation of South Texas Electric Logs

Alvin L. Schultz

South Texas Geological Society Special Publications

..., if a 100% water-bearing interval can be located that has the same porosity, formation water resistivity, and lithology, especially with respect to shale...

1986

Distribution of Bitumens in Reservoirs of the Ashal’Chin Field

Yu. V. Zubov, Yu. P. Kadysev, Z. Sh. Mukhametov, N. S. Tvorogov

Petroleum Geology: A Digest of Russian Literature

... and is 54-65% bitumen saturated. The lower part has still lower resistivity at 65-30 ohm-m and is 54-34% bitumen saturated. There is no single bitumen-water...

1977

Spotted Horse Field

Editors: Edward D. Dolly and James C. Mullarkey

Rocky Mountain Association of Geologists

..., clay-filled. The low log resistivity readings are caused by bound water held in the clay minerals in the pores and coating the sand grains...

1996

Petrophysics of Bimodal Porosity: Lower Cretaceous Rodessa Limestone, Running Duke Field, Houston County, Texas

G. B. Asquith, A. D. Jacka

GCAGS Transactions

...). The intragranular microporosity in the ooids is water saturated non-effective porosity. The presence of the microporosity will lower resistivity, thereby raising...

1992

Stretching the LWD Envelope for Geological Characterization of High-Temperature Deep Basement: A Case Study from Offshore China

Donghao Wu, Peichun Wang, Lei Xiong, Renfeng Zhang, Xin Zhou, Jiejing Gong, Chandramani Shrivastava, Lijun Zhao, Shuai Wang, Xiaoxun Chen

Unconventional Resources Technology Conference (URTEC)

... challenges due to very high resistivity of formation in the subsurface, hyper-saline mud being used to drill and high angle, horizontal well profiles...

2025

Basic Log Analysis in Coalbed Methane Exploration

Edward B. Campen, Elizabeth B. Campen

Rocky Mountain Association of Geologists

... pay zone, such as a dense, tight formation or fresh-water sand, as illustrated in Figure 2. The intervals of off-scale resistivity and the fact...

2002

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