Practical Wellbore Formation Test Interpretation; #120009 (2009)

Bo Cribbs

Search and Discovery.com

...-wet rock with OBM capillary pressure effects Formation Fluid 4 Pressures from Pretesting Normal Pretest Tight Pretest 7,000 7,000 Hydrostatic...

Hydrodynamic Flow in the Lower Cretaceous Muddy Formation, Northeast Powder River Basin, Wyoming and Montana

R. R. Berg, G. M. Larberg, L. D. Recker

Wyoming Geological Association

...) in excess of the expected hydrostatic head, and the vertical pressure gradient probably accounts for a large part of the total 700 ft (214 m) of oil...

Simulation of Light Hydrocarbon Migration in a Stacked Petroleum Reservoir at Teapot Dome, Wyoming, with Pressurization During Carbon Dioxide Sequestration

Ronald W. Klusman

AAPG Special Volumes

... by a factor of seven for CH4 and a factor of three for n-C4H10 by increasing reservoir pressure from hydrostatic to 1.4 hydrostatic. Concentrations at the top...

Source Material, Compaction History and Hydrocarbon Occurrence in the Cagayan Valley Basin, Luzon, Philippines

Noe L. Caagusan

Southeast Asia Petroleum Exploration Society (SEAPEX)

... be dispersed through them. Normal Hydrostatic Pressure In a stress system, such as a layer of unconsolidated rock, when additional load or pressure...

Applications of Pressure Analysis and Hydrodynamics to Petroleum Exploration in Indonesia

P. J. Cockroft, G. A. Edwards, R. S. K. Phoa, H. W. Reid

Indonesian Petroleum Association

... the pressure gradients may appear as hydrostatic along any specific individual trend. In other words, the pressure system of each reef would appear...

Observations on Fluid/Fracture Pressure Coupling Ratios; #70366 (2018)

Richard Lahann, Richard Swarbrick

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... of fluid and fracture pressures, expressed as gradients, yielded estimates of the fluid/fracture pressure coupling ratio values between 0.59 (Tingay et...

Numerical Simulations of Overpressured Compartments in Sedimentary Basins

E. Sonnenthal and Peter J. Ortoleva

AAPG Special Volumes

... and Seals  In many sedimentary basins there are regions where the fluid pressure exceeds the hydrostatic pressure and may approach lithostatic values...

Wireline Pressures Detect Fluid Contacts, Ikan Pari Field, Natuna Sea

Pryo Hutomo, W. V. Jordan

Indonesian Petroleum Association

.... 1964), p. 157-165 2. Ayestaran, L. & Stewart, G. – "The Interpretation of Vertical Pressure Gradients Measured at Observations Wells in Developed...

Distribution and Mechanism Forming of Overpressure Shale Gumai on Jambi Subbasin, South Sumatera Basin

Randa Guruh Sumarsono, Hari Wiki Utama, Nurul Izzah Asral, Yudhi Achnopha, Yan Indryanto

Indonesian Petroleum Association

... on normal hydrostatic gradients. The excess pressure is caused by loading or unloading of sediments. To predict pore pressure values, the Eaton method...

Hydrogeologic Aspects of Structural Deformation in the Northern Gulf of Mexico Basin

Paul H. Jones, Raymond H. Wallace, Jr.

New Orleans Geological Society

... The resistance of unconsolidated clastic sediments to structural deformation, an inverse function of their water content and pore pressure (commonly defined...

ABSTRACT: Pore Pressure Prediction for Deep Drilling in the Central Swamp Depobelt of the Niger Delta: Lessons for Deep Offshore Drilling; #90115 (2010)

Charles Ojo, James Ukandu, Joseph Ashiedu, Emma Tyler, and Montse Portet

Search and Discovery.com

... of clay minerals. The results show that the normal compaction trend has been disrupted in some areas by mud volcanoes from underneath. Two pore pressure...

Aquathermal Pressuring and Geopressure Evaluation: GEOLOGIC NOTES

Stephen R. Daines

AAPG Bulletin

... statement, "Because depth and pressure are related, the pressure and temperature of the formation fluids which follow the normal hydrostatic gradient...

Memoir 70, Chapter 11: Causes of Formation and Distribution of Abnormally High Formation Pressure in Petroleum Basins of Ukraine

A.J. Polutranko

AAPG Special Volumes

... of formation pressure above normal hydrostatic pressure with increasing depth and temperature, in conjunction with other factors, indicates that extended zones...

The Formation and Behavior of "Vapor Lock" Pressure Seals and Associated Hydrocarbon Accumulations in Geologically Young Basins

W.M. Benzing , G.M. Shook , S.D. Leroy

GCAGS Transactions

... in the pressure profile shown in Figure 5. Pressure gradients above and below the seal are approximately hydrostatic (9.81 kPa/m, or 0.433 psi/ft), whereas...

ABSTRACT: Pore Pressure Prediction from 3-D Seismic Data: A Feasibility Study for Unconventional Gas Exploration in Saudi Arabia, by Mujica, Daniel L.; Aldajani, Abdulfattah; #90141 (2012)

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Geothermal and Geopressure Assessment with Implications for Carbon Dioxide Sequestration, Lower Tuscaloosa Formation, Louisiana

Timmon Drumm, Jeffrey A. Nunn

GCAGS Transactions

... are separated into three groups: blue diamonds, near hydrostatic pressure gradients of 10 to less than 12.5 kPa/m (0.44–0.55 psi/ft); green triangles...

Geological Controls and Variability in Pore Pressure in the Deep-Water Gulf of Mexico, by Michael A. Smith #10029

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The Effect of Gravity on the Shape and Direction of Vertical Hydraulic Fractures

Saeed Salimzadeh

Australian Petroleum Production & Exploration Association (APPEA) Journal

... (GPa) 3 Proppant density (kg/m ) Case I: hydrostatic pressure without proppant 10 kPa/m, equal to hydrostatic pressure gradient (the gravitational...

Post-drill Analysis of Pore Pressure and Fracture Gradient from well logs and Drilling Events … An Integrated Case Study of a High Pressure Exploratory Well from Panna East, Mumbai Offshore Basin, India, #42289 (2018).

Souvik Sen, Ashani Kundan, Mithilesh Kumar,

Search and Discovery.com

...-Eocene Bassein Formation (2121-2657m) and the top of Panna Shale. Downhole pressure measurements (MDT) show sub-hydrostatic pressure condition against...

Subsalt pressure prediction in the Miocene Mad Dog field, Gulf of Mexico

Michael P. Merrell, Peter B. Flemings, Glenn L. Bowers

AAPG Bulletin

... for detailed discussion.We distinguish normal pressure (un) from hydrostatic pressure (uh) by considering the difference between seawater density (ρsw) and pore...

Exhumation charge: The last gasp of a petroleum source rock and implications for unconventional shale resources

Joseph M. English, Kara L. English, Dermot V. Corcoran, and Fabrice Toussaint

AAPG Bulletin

... subsequent uplift and exhumation, the pore pressure within the source rock will re-equilibrate to close to normal hydrostatic conditions within...

Shale Compaction and Abnormal Pressure Evaluation Application to the Offshore Mahakam

Michel Bois, Yves Grosjean, Louis de Pazzis

Indonesian Petroleum Association

... pressure (hydrostatic) dto = dt shale observed at a given depth dtn = dt shale value corresponding at a given depth to a normal compaction (normal trend...

Experimental Study of the Compaction of Phyllosilicate-Bearing Sand at Elevated Temperature and with Controlled Pore Water Pressure

E.H. Rutter, P.H. Wanten

Journal of Sedimentary Research (SEPM)

...). Assumptions: geothermal gradient = 20°C/km, lithostatic gradient = 35 MPa/km, burial rate = 0.5 mm/year, = pore pressure/overburden pressure ("normal...

Constraining the Timing of Tectonic Compression of the Tianshan Mountain From Reservoir Pressure Evolution in the Kuqa Foreland Basin, NW China

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Trapping Mechanisms for Oil in Lower Cretaceous Muddy Sandstone at Recluse Field, Wyoming

Robert R. Berg

Wyoming Geological Association

... the reservoir can be accounted for by capillary-pressure and potentio-metric gradients. The observed oil column is somewhat greater than 130 ft...