Thermal and Chemical Evolution of Hydrothermal Fluids at the Ophir Hill Mine Ophir District, Utah

Paula N. Wilson, W. T. Parry

Utah Geological Association

.... Survey Prof. Paper 173, 171 p. Haas, J.L., Jr., 1971, The effect of salinity on the maximum thermal gradient of a hydrothermal system at hydrostatic...

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

Wendy J. Harrison, Regina N. Tempel

AAPG Special Volumes

..., which are fluid pressure gradient in MPa. km-1, show the portion of the basin having fluid pore pressures significantly in excess of hydrostatic...

Cross-Formational Gravity-Flow of Groundwater: A Mechanism of the Transport and Accumulation of Petroleum (The Generalized Hydraulic Theory of Petroleum Migration)

Jozsef Toth

AAPG Special Volumes

... will be "anomalously" high, and the vertical pressure gradient is greater than hydrostatic. Vertical gradients of hydraulic heads and pressures are greater near...

Reduced Physics-Based Simulation for Unconventional Production Forecasting … A 1D Approach

Stein Krogstad, Miguel A. Jakymec, Amir Kianinejad, Dryonis Pertuso, Sebastien Matringe, Andreas Brostrom, Jakob Torben, Olav Møyner, Knut-Andreas Lie

Unconventional Resources Technology Conference (URTEC)

..., a simple hydrostatic correction is performed 𝑃! → 𝑃! + Δ𝑃! , where the change in pressure Δ𝑃! is defined as Δ𝑃! = 𝜌)*+ 𝑔7𝑧, − 𝑧- : where...

Geology of the Sweet Lake Geopressured-Geothermal Prospect, Cameron Parish, Louisiana-Drilling and Testing Results

C. O. Durham, Jr. , Karen Hoffman , R. W. Rodgers

GCAGS Transactions

... gradient calculated from the Schlumberger temperature log for the hydrostatic zone is 1.28°F per 100 feet, which is less than the aveage Gulf Coast...

Permeability Enhancement in Gas Shale Due to Nitrogen Flooding

Brandon Schwartz, Derek Elsworth

Unconventional Resources Technology Conference (URTEC)

... of the bedding-parallel floods was 24 MPa hydrostatic external stress and 6 MPa pore pressure. The stress state of the bedding-perpendicular flood had...

Geopressure in the Houma and Hollywood Fields, Louisiana

S.T. Mumme , R.E. Ferrell

GCAGS Transactions

... pressure gradient (top of hard geopressure) is at 13825 ft, while the top of the geopressure zone (based on electric log resistivity) lies at about...

Fracture stratigraphy, stress, and strain evolution in shale succession of the lower Paleozoic Baltic Basin (Poland)

Marek Jarosiński, Kinga Bobek, Andrzej Głuszyński, Krzysztof Sowiżdżał, and Tomasz Słoczyński

AAPG Bulletin

... compartment. The high-pressure gradient implies minimum vertical permeability between black and gray shale formations. Although this parameter...

Recovery of Tank-78 Buckle of Miri Crude Oil Terminal of Petronas Carigali Sdn Bhd.

George Khng, Edward Low

Southeast Asia Petroleum Exploration Society (SEAPEX)

... of the hydrostatic pressure from inside the tank would provide a uniform load acting on the tank shell helping it to regain its circularity. However, this method...

Possible Values of Formation Pressures in the Oil-Gas Pools of the Apsheron Shallows

Z. Ya. Kravchinskiy

Petroleum Geology: A Digest of Russian Literature

... exceed the hydrostatic pressure corresponding to the depth of occurrence of the gas-oil strata. See Table 1. The excess is particularly well expressed...

Capillary Pressure Techniques: Application to Exploration and Development Geology

Jeffrey B. Jennings

AAPG Bulletin

...Capillary Pressure Techniques: Application to Exploration and Development Geology Jeffrey B. Jennings 1987 1196 1209 71 10. (October) Capillary...

Regional overview of deep sedimentary thermal gradients of the geopressured zone of the TexasLouisiana continental shelf

Seiichi Nagihara, Michael A. Smith

AAPG Bulletin

... disturbance, yielded a regional map of geothermal gradient down to approximately 6 km (3.7 mi) subsea floor. Two geographic trends can be seen...

Southern Piceance Basin Model--Cozzette, Corcoran and Rollins Sandstones

Charles A. Brown, Thomas M. Smagala, Gary R. Haefele

AAPG Special Volumes

... interpretation, the Plateau wells would be considered underpressured and the MWX wells would be overpressured, compared to a hydrostatic gradient...

Factors controlling petroleum accumulation and leakage in overpressured reservoirs

Fang Hao, Weilin Zhu, Huayao Zou, and Pingping Li

AAPG Bulletin

...-basin, Bohai Bay basin (Hao et al., 2007a, 2009a, b). For the sake of simplification, the hydrostatic pressure gradient is set at 10 MPa/km (1450.37...

Groundwater Upwelling, Near Bay St. Elaine Salt Dome in Southeastern Louisiana, as Inferred from Fluid Property Variations (1)

DANIEL P. CASSIDY and VISHNU RANGANATHAN

AAPG Bulletin

... these drawbacks, the George method provides reasonably good estimates of fluid pressure gradient in overpressured intervals. These estimates can be verified...

Optimizing the Upside Hydrocarbon Potential Through Evaluation of Wireline Formation Tester and Formation Pressure while Drilling - A Case Study from North Belut, Block B South Natuna

Julianta Parlindungan Panjaitan, Kurniawan Purwoko, Haryo Anindito, Tigor Hamonangan, Yana Hendrayana, Budiman Budiarto, Rinaldi Sudarwoto, Mitra Dolok Sion Silaban

Indonesian Petroleum Association

... (i.e. Highly deviated well to help decision making process, save rig time, and reduce cost). During the drilling of the well, the hydrostatic pressure...

Feasibility of Underground Natural Gas Storage in Yellowstone Field Woods County, Oklahoma

Bijan Esfandiari

Oklahoma City Geological Society

.... A normal overburden pressure gradient of 1.0 psi/ft is assumed fracture gradients in psi/ft, and formation storage pressure psig was calculated. The results...

Measurement of Sediment Surface Heat Flow and Its Application in Deepwater Exploration

Bernie B. Bernard, James M. Brooks, Sean Flanagan

Indonesian Petroleum Association

... in the sediment column, the conductive heat flow is the product of the temperature gradient and thermal conductivity. Heat flow (Q), measured...

Variations of Density and Porosity with Depth in Deep-sea Sediments

Edwin L. Hamilton

Journal of Sedimentary Research (SEPM)

... pressure is independent of depth of water if free movement of water can take place so that water pressures in sediment pore spaces can become hydrostatic...

Gas Lift Optimisation Strategy Using Genetic Algorithm in Coorporating Technical and Economical Aspects

Amega Yasutra, Aris Wakhyudin

Indonesian Petroleum Association

... casing-tubing annulus and enter tubing through orifice. The lower effective fluid density effect the hydrostatic pressure of fluid. Hence oil production...

Frontier Exploration Basin Modeling Technology Tested in the Mature Arkoma Basin, Oklahoma, USA: Abstract

Indu D. Meshri, S. S. Foland, S. L. Bolton, J. M. Walker

Tulsa Geological Society

..., the modeled pressures in the Atokan shales reached 7500 psi (500 atm) above normal hydrostatic pressures, creating effective pressure seals...

Abstract: Compaction and Overpressure in Shales: Practice and Theory

Phil Heppard and Dan Ebrom

Houston Geological Society Bulletin

... to explorationists generally. Away from well control, the most common source of pressure information is P-wave seismic velocities. Converting shale...

Early Devonian Gas in Northern West Virginia and Pre-Devonian Oil Prospects: DISCUSSION

Stanley C. Herold

AAPG Bulletin

... or impervious rocks doubtfully explain the situation. To be sure, a pressure of 3,200 pounds per square inch can only exceed the normal hydrostatic head...

Information from the Central Commission for Producing Oil Fields of the USSR

Ye. V. Gabura, I. P. Vasil’yev

Petroleum Geology: A Digest of Russian Literature

... pressure in the first has dropped below the hydrostatic. During the initial period all the wells will be produced by the flow method. Well drilling...

Abstract: Prediction of Subsurface Conditions and Hydrocarbon Product Composition Expelled during Primary Migration from Gas-Prone Source Rocks, by H. S. Poelchau, W. D. Kuhne, and D. Leythaeuser; #91004 (1991)

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