Reliability of Saturation-Pressure Method for Dating Time of Oil Accumulation

M. E. Hoshkiw

AAPG Bulletin

... in the calculation, (9) that the potentiometric surface was near the land surface at the time of accumulation, and (10) that hydrostatic pressure...

ABSTRACT: FLUID CONDUCTIVITY IN THE SOUTH ELLWOOD FAULT: COMMUNICATION BETWEEN THE OCEAN AND A HYDROCARBON RESERVOIR AT ONE KILOMETER DEPTH; #90014 (2003)

Boles, James R., Steve Horner

Search and Discovery.com

..., which is produced from Platform Holly. The reservoir was initially 30% over hydrostatic pressure, but is currently only 10% below hydrostatic...

Hydrodynamic Trapping, Tilted Contacts and New opportunities in Mature Onshore Kutei Basin, East Kalimantan, Indonesia; #41060 (2012)

Usman Jauhari, Robhy Permana, Andre Wijanarko, and Amireno Soenoro

Search and Discovery.com

... acquired from water sand in east flank wells show 8.65 ppg which is higher than normal hydrostatic pressure, meanwhile those acquired from water sand...

Toward Understanding Over-Pressure in a Basin with Burial and Uplift: Preliminary Results of a Study Measuring Under-Compaction with DT Logs

Paul E. Devine

Unconventional Resources Technology Conference (URTEC)

... from the predicted hydrostatic trend. Paleopressure is estimated based on the magnitude of the anomaly using pressure gradients and paleodepth...

Geological Aspects of Abnormal Reservoir Pressures in Gulf Coast Louisiana

George Dickinson

AAPG Bulletin

.... The abrupt increase in pressure above normal hydrostatic pressure commonly occurs over a very short vertical interval which makes control difficult...

Vertical Pressure Distribution in the Central Nam Con Son Basin, Vietnam

Hoang Ngoc Dang, Jan Rafdal, Chris Sladen

Indonesian Petroleum Association

... Son Basin. Pressure Distribution in Relation to Stratigraphy and Structure Pressure Gradients in Different Sequences Several wells have been drilled...

Production and Pressure Characteristics of Gas Reservoirs, Veracruz Basin, Mexico

Holtz, Mark H., Garcia, Javier, Sakurai, Shinichi, Wawrzyniec, Timothy F., Jennette, David C., Bolanos, Juan Jose

GCAGS Transactions

... the pressure and compare with the normal hydrostatic pressure by applying: hydrostatic pressure (psig) = 0.45 * Depth (ft) + C; hydrostatic pressure (kg/cm2...

Use of Overpressure Data to Assess Oil-Gas Potential of Northern Areas of Timan-Pechora Province

V. Ye. Aronson, V. I. Slavin, Ye. M. Smirnova, G. I. Fenin

Petroleum Geology: A Digest of Russian Literature

... zones as well as in Kos’yu-Rogov depression. In most areas the upper part of the section exhibited normal hydrostatic pressure, and overpressure...

Pore pressure in the Beetaloo Sub-basin

Rasoul Ranjbarkarami, Mojtaba Rajabi, Parisa Tavoosiiraj

Australian Energy Producers Journal

... is the pore pressure gradient, OBG is the over­ burden stress gradient and Png is the hydrostatic pore pressure gradient. Δtn, which is normal compaction...

Thickness of Removed Sedimentary Rocks, Paleopore Pressure, and Paleotemperature, Southwestern Part of Western Canada Basin

Kinji Magara

AAPG Bulletin

... are possible because shale compaction is related to overburden load or burial depth, if pore pressure is normal or hydrostatic. Hydrostatic pressure...

Abnormal Formation Pressure and Shale Porosity

Halfdan Carstens , Henning Dypvik

AAPG Bulletin

... of mostly normal hydrostatic pressures, except for a modest pressure buildup in the deeply buried Lower Cretaceous series. A rapid increase in fluid...

Methods to Help Control Annular Gas Flow

Ron W. Adams

Indonesian Petroleum Association

... well parameters such as over-balanced pressure. This can be accomplished by increasing hydrostatic pressure, shortened cement columns, using stage...

A Method of Estimating Formation Pressures from Gulf Coast Well Logs

Harold H. Ham

GCAGS Transactions

... porosity reduction with depth and may be considered to represent normal pressure gradients. Shale properties are studied in this system because...

Formation, preservation and release of overpressure in shale gas reservoirs

Qing He , Tian Dong , Matthew Steele-MacInnis , Zhiliang He , and Dongfeng Hu

AAPG Bulletin

... into the same stratigraphic unit variably show present-day conditions of either normal (~hydrostatic) pressure, or significant overpressures (>hydrostatic...

Geopressure Compartmentalization in Keathley Canyon Deep Water, Gulf of Mexico

Selim S. Shaker

GCAGS Transactions

... the hydrostatic, oil and gas gradients. Pore pressure and fracture gradients usually reside in the envelope between the hydrostatic and lithostatic...

Regionally Interpolated Pore Pressure Model Utilizing Multiple Empirical Methods in the Delaware Basin

Yamin Li, Jon Roberts

Unconventional Resources Technology Conference (URTEC)

...-NPT)EE Where OBP is the overburden pressure, Phyd is the hydrostatic pore pressure, Vp is the measured compressional velocity, Vp-NPT is the normal...

Abstract: Petroleum Potential and Over-Pressuring in the Molassic Deposits of the South-Eastern Part of the South Adriatic Basin, by M. Gjoka and A. Dulaj; #90956 (1995).

Search and Discovery.com

Permeability and Effective Stress: GEOLOGIC NOTES

M. D. Zoback , J. D. Byerlee

AAPG Bulletin

...------------------------------ pump at low flow rates (and thus small pressure gradients), yet at high pore pressures. Permeability was computed in accordance...

Calculated Compaction States of Thick Abnormally Pressured Shales

Richard S. Bishop

AAPG Bulletin

... into three zones--hydrostatic, transitional, and abnormal (or "super abnormal"). Although the transitional zone pressure is higher than hydrostatic...

Migration of Fluids in Sedimentary Basins: DISCUSSION

Richard E. Chapman

AAPG Bulletin

... of excess hydrostatic pressure occur near the center of the section. From this ^hellip, it would appear that the interstitial fluids are being expelled...

Using Pressure Data to Build a Stratigraphic Framework in the Deepwater Ranggas Field, Kutai Basin … East Kalimantan

Ida Njoman Widya Dharmasamadhi, Sena W. Reksalegora

Indonesian Petroleum Association

... of the shales above normal hydrostatic pressure. Where shales are more widespread, the overpressure signature can be identified over a broader area...

A New Approach to Pore Pressure Predictions: Generation, Expulsion, and Retention Trio—Case Histories from the Gulf of Mexico

Selim Simon Shaker

GCAGS Transactions

... B. All the previous methods calculates the pressure in zone B as if a normal hydrostatic pressure exists. In this paper, a new estimation method...

Chapter 3: Overpressure in Shale Gas: When Geochemistry and Reservoir Engineering Data Meet and Agree

Jean-Yves Chatellier, Pawel Flek, Marianne Molgat, Irene Anderson, Kevin Ferworn, Nabila Lazreg Larsen, Steve Ko

AAPG Special Volumes

.... Two reference gradients were used as references in the pressure-depth plots: the hydrostatic pressure gradient of 10 kPa/m and a normal fracture...

Abstract: Abnormal Electric Resistivity and Fluid Pressure in Bakken Formation, Williston Basin, and its Relation to Petroleum Generation, Migration, and Accumulation, by Fred F. Meissner; #90971 (1976).

Search and Discovery.com

Subsurface Formation Pressure Gradient vs. Slope: Perception and Pitfalls

Selim S. Shaker

GCAGS Transactions

... to pressure gradient assessment. Moreover, equating natural pressure measurements using wireline tools to manmade variable mud weight pressure gradients can...