Geochemical Characteristics and Estimation of Gas Content of the Low-Middle Mature Continental Shales: A Case Study from the Ordos Basin; #10517 (2013)

Xuan Tang, Jinchuan Zhang, Xiangzeng Wang, Bingsong Yu, Wenlong Ding, and Lixia Zhang

Search and Discovery.com

... is underpressure with average pressure index 0.56; Temperature gradient 2.77℃/100m Canister Gas desorption= desorbed gas +dissolved gas Lost gas estimation...

Building Confidence in Containment Security and Reservoir Performance for CO2 Geostorage in the Surat Basin at the Regional Scale

Jonathan Hodgkinson, Vic Ziolkowski, Andrew Garnett, Sebastian Gonzalez

Petroleum Exploration Society of Australia (PESA)

... SDA Paddy Creek South 1. Figure 7. Significant underpressure in the Precipice Sandstone relative to the overlying Evergreen Formation and Hutton...

Pressure Compartments in the Mesaverde Formation of the Green River and Washakie Basins, as Determined from Drill Stem Test Data

Henry P. Heasler, Ronald C. Surdam

Wyoming Geological Association

... on the figures of FSIP versus depth (Figures 7 and 9) can the hydrostatic gradient line be strictly used to define zones of overpressure and underpressure...

Attributes of a Large Underpressured Gas System, San Juan Basin, New Mexico

Philip H. Nelson, Steven M. Condon

AAPG Special Volumes

... other possible causes of underpessure: (1) decrease in temperature and stress caused by uplift and removal of overburden, (2) burial of gas-saturated...

A New Integrated Screening of China Lacustrine Liquids Rich Shale Resource

G. E. Bai, Y. I. Wan

Unconventional Resources Technology Conference (URTEC)

... for the Yanchang formation and found more than 80% wells with underpressure issues, having pressure gradients lower than 9 kpa/m. Although...

Salt-driven evolution of a gas hydrate reservoir in Green Canyon, Gulf of Mexico

Alexey Portnov, Ann E. Cook, Mahdi Heidari, Derek E. Sawyer, Manasij Santra, and Maria Nikolinakou

AAPG Bulletin

... or underpressure on the flanks and in the roof of the diapir (Nikolinakou et al., 2018). To characterize the pore pressure within the diapir roof sediments...

Present-day stress regime, permeability, and fracture stimulations of coal reservoirs in the Qinshui Basin, northern China

Shida Chen, Yafei Zhang, Dazhen Tang, Shu Tao, Yifan Pu, and Zhenhong Chen

AAPG Bulletin

... pressure types: underpressure (<0.9 MPa/100 m [<0.4 psi/ft]), normal pressure (0.9–1.1 MPa/100 m [0.4–0.49 psi/ft]), and overpressure (>1.1 MPa/100 m...

Heterogeneity of STACK/SCOOP Production in the Anadarko Basin, Oklahoma„Geochemistry of Produced Oils

Carl Symcox, R. Paul Philp

Unconventional Resources Technology Conference (URTEC)

... the overpressured areas exhibit the predicted trend of catagenesis during maturation, while samples from normal- to underpressure show significantly elevated gas...

Goliat Discovery … A Knowledge-Based Approach, Persistence and the First Commercial Oil Development in the Norwegian Arctic; #20415 (2018)

Filippos Tsikalas, G. Uncini, N. Mavilla, I. Staine, F. Casaglia, J. Leutscher, M. Gennaro, V. Arrigoni, L-E. Gustafsson, R. Galimberti, C. Daturi

Search and Discovery.com

...-migration (areas with current hydrostatic- or underpressure) ”old-fashion” perception 2. Dynamic fluid flow Pressure gradient in the west:  current...

Potential Basin-Centered Gas Accumulation in Cretaceous Trinidad Sandstone, Raton Basin, Colorado

Peter R. Rose, John R. Everett, Ira S. Merin

AAPG Special Volumes

... and subsurface elevations. (2) Pressure regimes vary from mild overpressure (eastern Green River basin) to underpressure (San Juan basin). (3) Contained...

Development of Abnormal and Subnormal Pressures in Reservoirs Containing Bacterially Generated Gas

Colin Barker

AAPG Bulletin

... discussed in this paper apply to systems containing gases that are not generated by bacteria. For example, an isolated gas reservoir will underpressure...

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

..., probably abnormally pressured. However, we have insufficient data to determine whether these rocks are overpressured or underpressure . This well is included...

Baseline studies of surface gas exchange and soil-gas composition in preparation for CO2 sequestration research: Teapot Dome, Wyoming

Ronald W. Klusman

AAPG Bulletin

..., and the reservoir is significantly overpressured. This contrasts with the underpressure in the Shannon and Second Wall Creek at Teapot at the time...

CSPG/CSEG/CWLS Convention 2004; - Abstracts, #90213 (2015).

Search and Discovery.com

Coalbed Methane in the Fruitland Formation, San Juan Basin, Western United States: A Giant Unconventional Gas Play

Walter B. Ayers Jr.

AAPG Special Volumes

... to underpressure occurs along the basin's hinge line, coincident with the steep potentiometric surface (Figure 18) and southwestward pinch-out of aquifer coal...

Magnitude, mechanisms, and prediction of abnormal pore pressure using well data in the Krishna–Godavari Basin, east coast of India

Sumangal Dasgupta, Rima Chatterjee, and Sarada Prasad Mohanty

AAPG Bulletin

... of the pore fluid (Osborne and Swarbrick, 1997). This pore-fluid pressure is commonly called pore pressure. The terms overpressure and underpressure refer...

Fluid-Flow Regimes and Sandstone Shale Diagenesis in the Powder River Basin, Wyoming

Ronald C. Surdam, Zun Sheng Hao, Peigui Yin

Special Publications of SEPM

...) Normal Pressure Multiphase Normal Pressure (Gas/OillMarine Gas OiVMarine Water) Water Underpressure Underpressure J: r .... C. Q Ql Ql C o 8,000 ft...

Origin of helium and nitrogen in the Panhandle–Hugoton field of Texas, Oklahoma, and Kansas, United States

Alton Brown

AAPG Bulletin

.... (1964) interpreted the underpressure as being caused by equilibration with stratigraphically equivalent outcrops at lower elevation than surface rocks...

Global Tectonic and Basin Maps, #30444 (2020).

Albert W. Bally, D. Sawyer, A. Sinkewich

Search and Discovery.com

..., 2012, Passive margin prolonged volcanism, East Australian Plate: Outbursts, progressions, plate controls and suggested causes: Australian Journal...

Pressure and Basin Modeling in Foothill Belts: A Study of the Kutubu Area, Papua New Guinea Fold and Thrust Belt

Jean-Paul Callot, William Sassi, François Roure, Kevin Hill, Nigel Wilson, Renaud Divies

AAPG Special Volumes

... connecting the hydrostatic trend in the upper layers to the mild underpressure values observed below the Ieru Shale. It is important to note...

Review of Characteristics of Low-Permeability Gas Reservoirs in Western United States

Charles W. Spencer

AAPG Bulletin

... of overpressure and underpressure in low-permeability strata is helpful because these conditions are commonly present in thick gas-saturated intervals. Optimum...

Thermogenic and Secondary Biogenic Gases, San Juan Basin, Colorado and New Mexico--Implications for Coalbed Gas Producibility

Andrew R. Scott , W. R. Kaiser , Walter B. Ayers, Jr.

AAPG Bulletin

... is estimated to be -48^pmil. Coalbed gas isotopic values from wet gases immediately south of the transition between overpressure and underpressure range from...

A study of hydrogeology and its effect on coalbed methane enrichment in the southern Junggar Basin, China

Haijiao Fu, Dazhen Tang, Zhejun Pan, Detian Yan, Shuguang Yang, Xinguo Zhuang, Guoqing Li, Xing Chen, and Gang Wang

AAPG Bulletin

... existed in the underpressure zone. Overall, the abnormally high CO2 content in stagnant zones should be mainly associated with microbial methanogenesis...

The preservation of water-table caves at depth: Observations from subsurface data and numerical modeling

Andrea Nolting, P. J. Moore, Janelle Homburg, and Fermín Fernández-Ibáñez

AAPG Bulletin

... within the open cave to the matrix of the model. This scenario narrows the potential to understand how situations where overpressure, underpressure...

Search and Discovery

Search and Discovery.com