The impact of organic pores on estimation of overpressure generated by gas generation in organic-rich shale: Example from Devonian Duvernay Shale, Western Canada Sedimentary Basin

Pengwei Wang, Zhuoheng Chen, Kezhen Hu, and Chen Xiao

AAPG Bulletin

... additional gas resource due to higher gas compressibility under higher pore pressure than that under a normal formation pressure (Munson, 2015...

Estimating the Amount of Oil and Gas Accumulation from Top Seal and Trap Geometry

Fuminori Sawamura, Kazuo Nakayama

AAPG Special Volumes

...: Hydrostatic Trap-equilibrium EquationOver the geological timescale of hydrocarbon migration, only capillary-pressure properties are needed...

Overpressure and mudrock compaction in the Lower Kutai Basin, Indonesia: A radical reappraisal

Agus M. Ramdhan, Neil R. Goulty

AAPG Bulletin

... hydrostatic. The circumstances illustrated in Figure 4A, showing constant porosity and pore pressure parallel to the lithostatic stress below the top...

H. Arbuckle Gas Field, Colusa County, California: Occurrence of Natural Gas in Mesozoic Rocks of Northern California

Richard H. Vaughan

AAPG Special Volumes

... at a depth of 7,145 ft in the Cretaceous. The pressure gradients have ranged from hydrostatic gradient (0.44 psi/ft) in the Pliocene beds to gradients...

Parameters of Subsurface Structural Reconnaissance in the Simpson Group (Ordovician), South Norman Area, Oklahoma

George O. McDaniel, Jr.

Oklahoma City Geological Society

... mud pressure, final hydrostatic mud pressure, initial flow pressure, final flow pressure, final shut-in pressure, and where taken, the initial shut...

RhoVe T Method Empirical Velocity-Density-Temperature-Effective Stress Transform

Matt Czerniak

GCAGS Transactions

...-effective stress (RhoVe) method represents an empirical approach to pore pressure analysis and calibration that utilizes a series of model-driven...

A Method of Estimating Formation Pressures from Gulf Coast Well Logs: ABSTRACT

H. H. Ham

AAPG Bulletin

... characteristics of shale vary nearly uniformly with depth through zones of normal pressure. When abnormally pressured formations are found, they usually...

Hydrodynamic effects on low-dip stratigraphic traps

S. A. Stewart

AAPG Bulletin

... (Cohen and Cherry, 2020). Figure 1E, F illustrates simple fluid and pressure distributions in a hydrostatic situation. Even in a hydrostatic scenario...

Spatial Variations in Salinity to Determine Fluid Flow Pathways and Reservoir Compartmentalization in a Deepwater Gulf of Mexico Field, #20306 (2015).

Jeffrey Nunn, William Daugherty

Search and Discovery.com

...  Dissolution and migration of pore fluids around salt structure onshore and coastal Louisiana (SP log analysis – Sands only) Hydrostatic, Near...

Lithologic, mineralogical, and petrophysical characteristics of the Eau Claire Formation: Complexities of a carbon storage system seal

Ryan J. Neufelder, Brenda B. Bowen, Richard W. Lahann, John A. Rupp

Environmental Geosciences (DEG)

... fluid density versus depth for CO2 fluid assumed to be in pressure equilibrium with hydrostatic water column. Representative geothermal gradient...

Oil generation as the dominant overpressure mechanism in the Cenozoic Dongying depression, Bohai Bay Basin, China

Xiaowen Guo, Sheng He, Keyu Liu, Guoqi Song, Xunjun Wang, Zhongsheng Shi

AAPG Bulletin

... is the hydrostatic pressure (MPa), PP is the pore pressure (MPa), Sv is the vertical stress (MPa), tn is the acoustic traveltime from the normal compaction trend...

Drilling Risks Associated with Hydraulic Fractures and Reactivating Faults due to High Mud Weight/Pore Pressure and Miti (Paper B13)

A. A. Bal, D. Maya, K. K. Kyi, R. Guha, M. I. Gabreldar, D. Abang Indi

Geological Society of Malaysia (GSM)

... expected pressure) with normally pressured shales. More specifically, the challenge is to provide enough borehole support for the normal or over...

Subsurface Fluid Compartments, by D. E. Powley, #60006 (2006).

Search and Discovery.com

Kinky Vitrinite Reflectance Well Profiles: Evidence of Paleopore Pressure in Low-Permeability, Gas-Bearing Sequences in Rocky Mountain Foreland Basins

B. E. Law, V. F. Nuccio, C. E. Barker

AAPG Bulletin

... pore pressures higher than normal hydrostatic pressure. Thus, an overpressured zone of gas- and water-bearing rocks is formed in which the direction...

An Experimental Investigation of the Anisotropic Dynamic and Static Properties of Eagle Ford Shales

Yang Wang, De-Hua Han, Luanxiao Zhao, Abhijit Mitra, Samir Aldin

Unconventional Resources Technology Conference (URTEC)

... along pre-existing cracks or grain boundaries, and inelastic microcrack closure. However, when the hydrostatic pressure decreases to 13.8MPa, the grains...

Low pressure buildup with large disposal volumes of oil field water: A flow model of the Ellenburger Group, Fort Worth Basin, northcentral Texas

Shuang Gao, Jean-Philippe Nicot, Peter H. Hennings, Paul La Pointe, Katie M. Smye, Elizabeth A.Horne, and Robin Dommisse

AAPG Bulletin

... align with the expected hydrostatic pressure. Thus, the model was assumed to be normally pressured everywhere with a pressure reference point located...

Depositional Environment Drive as Overpressure Generation: Study Case in GapŽ Field, North West Java Basin

Anggit Chandra Prasetyo, Alfian Gilang, Putra Nurramdhan, Thomas Cafreza, Syaifuddin

Indonesian Petroleum Association

... is pore pressure, 𝜎 𝑣 is vertical stress, 𝑃 𝑛 is hydrostatic pressure, 𝛥𝑡 𝑛 is sonic on NCT (normal compaction trend), 𝛥𝑡 is value of sonic...

Degree of Saturation of Formation Waters by Dissolved Hydrocarbons and Sulfates as an Exploration Indicator in Oil-Gas Evaluation

Ye. E. London

Petroleum Geology: A Digest of Russian Literature

... of saturation pressure and hydrostatic pressure of the formation water. Where a pool is in geochemical old age, characterized by a cessation...

Overpressure History of the Malay Basin, Offshore Peninsular Malaysia

Mazlan Madon

Geological Society of Malaysia (GSM)

... the sonic log indicates undercompaction, a departure from the “normal” compaction trend as well penetrates the overpressured zone. From such pressure...

Measuring Key Reservoir Properties for Shale and Tight Development

Xinghui Liu, Brent Kebert, Tohoko Tajima, Baosheng Liang, Lauren Devoe, Ramez Hanna Alla, Claire Lacobie, Yuguang Chen, Oscar Beltran, Hao Sun, Bolaji Sanni, Spencer Riebschlager, Leonardo Chaves, Neil Dilorenzo

Unconventional Resources Technology Conference (URTEC)

... pressure based on the hydrostatic pressure of the wellbore fluid prior to the DFIT analysis. URTeC 4044157 5 Figure 2. Pumping data for a DFIT Pre...

Origin and Petrophysical Log Response of Overpressures in the Baram Delta Province, Brunei

Mark R. P. Tingay, Richard R. Hillis, Richard E. Swarbrick, Christ K. Morley

Indonesian Petroleum Association

... in normally compacted sediment to the observed acoustic travel time: Pp = σv-(σv-Ph)(∆tnorm/∆t)x where x is an exponent, Ph is hydrostatic pore pressure...

The Role of Faulting in Northern Carnarvons Sub-Basins in Transferring Very High Overpressure

Edward Hoskin, Jakob Heller

Australian Petroleum Production & Exploration Association (APPEA) Journal

... of overpressure and, as such, create a wide range of pore pressure conditions from hydrostatic pressure to overpressure levels approaching values of vertical...

Mathematical modeling of microcrack growth in source rock during kerogen thermal maturation

Yunfei Yang, and Gary Mavko

AAPG Bulletin

...) and the reference hydrostatic pressure. σ0 = confining stress, which is the lithostatic stress accumulated from zero at t = 0; L &equals...

Abstract of 2006 AAPG/GSTT Hedberg Conference

Search and Discovery.com

Abstract: Evaluation of the Abnormally High and Low Pressured Morrow Formation, Oklahoma*

Donald P. Helander

Southeast Asia Petroleum Exploration Society (SEAPEX)

... in the Morrow Formation actually range from abnormally high to normal to abnormally low pressure in the area studied. An explanation is presented...