Dirty vs. Clean Salt: Their Impact on the Subsalt Wilcox Deepwater Exploration Plays

Selim Shaker

GCAGS Transactions

... exhibits the different subsurface pressure gradients. Hydrostatic and overburden represent the weight of water and sediment columns respectively...

The in situ Stress Field of the Cooper Basin and its Implications for Hot Dry Rock Geothermal Energy Development

S. D. Reynolds, S. D. Mildren, R. R. Hillis, J. J. Meyer

Petroleum Exploration Society of Australia (PESA)

... normal heat production causing elevated geothermal gradients in the surrounding region (Deighton & Hill 1998). Two companies, Geodynamics and Scopenergy...

Overpressure Characteristics in Pertamina's Area in the North Sumatra Basin

Lambok M. Hutasoit, Weling Suseno, Darius Siahaan, Agus M. Ramdhan, Neil Goulty, M. Syaiful, Andang Bachtiar, Irwan Iskandar, Hendarmawan, Wuryadi Sadirsan, Maikel Arifin, Fatrial Bahesti, Kharisma Endarmoyo

Indonesian Petroleum Association

... in the Upper Baong, either low overpressure or even normal hydrostatic pressure in the Mid Baong sand-prone sequence, high overpressure in the Lower Baong...

Criteria of Gas Pools Containing Hydrates

N. L. Sheshukov

Petroleum Geology: A Digest of Russian Literature

... of hydrostatic pressure. Thus, factors favorable for formation of gas hydrates always exist at depth. However, in regions with normal and high geothermal...

Observations On Fluid/Fracture Pressure Coupling Ratios

Search and Discovery.com

Post-Paleocene Evolution of Regional Groundwater Flow-Systems and Their Relation to Petroleum Accumulations, Taber Area, Southern Alberta, Canada

J. Toth, T. Corbet

CSPG Bulletin

... the original vertical pressure gradients) in the aquifers under the former inflow and outflow regions; and 3) pressures in excess of hydrostatic with respect...

3.0 General Ramifications of Abnormal Pore Pressures

P. E. Gretener

AAPG Special Volumes

... the 3.5 ratio exists, even though the ratio drops below 3.5 and where pressure gradients trend back towards normal, provided no major unconformity...

Distribution of Anomalously High Formation Pressures in the Black Sea-Crimean Oil-Gas Region

R. M. Novosiletskiy, O. M. Ozernyy

Petroleum Geology: A Digest of Russian Literature

... pressure in the oil pool of the Serebryan area is 2 mpa below the hydrostatic pressure. In the Indolo-Kuban downwarp (Kerchen Peninsula) thickness...

Fibrous Calcite Veins, Overpressures, and Primary Oil Migration: GEOLOGIC NOTE

Robert Stoneley

AAPG Bulletin

... of the overburden, and its pressure therefore exceeds normal hydrostatic pressure. Overpressuring is transitory. Over long periods of time, which may...

Interaction of Reaction, Mass Transport, and Rock Deformation During Diagenesis: Mathematical Modeling of Intergranular Pressure Solution, Stylolites, and Differential Compaction/Cementation

Thomas Dewers, Peter J. Ortoleva

AAPG Special Volumes

.... 355-389. Powley, D. E., 1985, Pressure, normal and abnormal: Lecture Notes, "Techniques of Petroleum Exploration II": AAPG School, South Padre Island...

In situ stress variations associated with regional changes in tectonic setting, northeastern Brooks Range and eastern North Slope of Alaska

Nilesh C. Dixit, Catherine L. Hanks, Wesley K. Wallace, Mohabbat Ahmadi, and Obadare Awoleke

AAPG Bulletin

... or from postdrill methods, such as drill stem tests (DSTs), repeat formation testers, hydrostatic pressure gradients, and drilling mud weights...

The Effect of Unconformities and Subsequent Loading on Pore Pressure Profiles

Jakob Heller, Stephen O 'Connor, Andrew Emery, Ed Hoskin, Jack Lee, Chris Ward

Indonesian Petroleum Association

... pressure can maintain equilibrium with the hydrostatic (normal) pressure gradient, the shales are said to be normally compacting and the velocity...

Hydrodynamic Relationships in the Mid-Continent

T. G. Larson

Tulsa Geological Society

... of the Mid-Continent, normal hydrodynamic flow gradients from these intake or recharge points gradually lose potential toward the discharge areas, where...

Hydrodynamic Interpretation of Mid-Continent: Region 7

T. G. Larson

AAPG Special Volumes

... and Oklahoma, where the pressures are commonly subnormal for the depth and the lateral gradients are very low. The pressure systems in the Arkoma basin...

Reservoir Knowledge and Drilling - Benefits Comparison for Underbalanced and Managed Pressure Drilling Operations

Doug Finley, Sara Shayegi, Joe Ansah, Isabel Gil, Randy Lovorn

Indonesian Petroleum Association

... is not depleted and at or greater than normal hydrostatic pressure, then underbalanced conditions can often be achieved using a sufficiently light liquid...

Exploration Hydrodynamic - Northwestern Colorado

Patrick A. Treckman, Gilman A. Hill, William A. Colburn, Floyd H. Millera

Rocky Mountain Association of Geologists

.... HYDRODYNAMIC MAPPING Hydrodynamic gradients can be mapped from formation-pressure measurements, the most common of which is the drill-stem test. The “true...

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...

Pore Pressure Prediction in Challenging Areas … Reducing Uncertainty by Understanding Rock BehaviourŽ; #40650 (2010)

Sam Green, Richard Swarbrick, Stephen O'Connor, Phill Clegg, David T. Scott, and Bitrus Pindar

Search and Discovery.com

... pressures to equilibrate to hydrostatic conditions. Depth Pore pressure prediction will reveal higher effective stress than valid for the current depth...

2.0 Abnormal Pore Fluid Pressures: Definition, Terminology, Observations

P. E. Gretener

AAPG Special Volumes

... been termed normal. This range is accepted in view of the variable density of formation waters AND the limited accuracy of pressure measurements which...

Abstract: Pressure Trends in Lower Viosca Knoll and Mississippi Canyon, Gulf of Mexico Deep Water: Implications for Seals, Column Heights and Hydrocarbon Migration

Bruce E. Wagner

Houston Geological Society Bulletin

... be encountered. Pore pressure is elevated above a "normal" hydrostatic trend at shallow sediment burial depths. Indications are that top seals form with as little...

Application of Formation Pressure in Evaluation and Risking of Prospect; #10654 (2014)

Arpita Mandal, Ankaj Sinha, Rupdip Guha, Alisha Mehra

Search and Discovery.com

... structure. Relationship of formation pressure to hydrostatic vis-à-vis interpreted structural spill from depth structure map was used to de-risk prospects...

Abstracts: 2-D Finite-difference Modelling of Pore-pressure Diffusion in Heterogeneous Anisotropic Porolelastic Media: Implications for Induced Microseismicity; #90173 (2015)

David W. Eaton

Search and Discovery.com

... ⎢ ∂x j ⎥ ⎣ ⎦ , (3) where p is the pressure perturbation (generally the deviation from hydrostatic conditions), Dij is the hydraulic-diffusivity...

Carbon dioxide sealing capacity: Textural or compositional controls? A case study from the Oklahoma Panhandle*

Constantin Cranganu and Hamid Soleymani

Environmental Geosciences (DEG)

... process (Goodarzi et al., 2010).Hydrostatic pressure or normal pressure is referred to the stress exerted by the weight of the static fluid column. Density...

Diagenetic Pathways in Sedimentary Basins: Chapter 6: DIAGENESIS AND BASIN HYDRODYNAMICS

Wendy J. Harrison, Regina N. Tempel

AAPG Special Volumes

... between abnormal and near-normal pressure in the offshore Frio shales. GEOLOGY OF THE GULF OF MEXICO BASIN The Gulf of Mexico basin has been...

Identifying Potential Gas Accumulation Sites from Oligocene Overpressure Data in the Qiongdongnan Basin, Offshore South China: GEOLOGIC NOTE

Liu Funing

AAPG Bulletin

... increased the pressure/depth gradient to levels above normal. Seismic lines N1N1^prime and N2N2^prime (Figure 1b) show that the Pliocene and Quaternary...