Modelling the Contribution of Individual Seams to Coal Seam Gas Production

Vanessa Santiago, Ayrton Ribeiro, Suzanne Hurter

Unconventional Resources Technology Conference (URTEC)

... except for one that was varied according to the ranges shown in Table 2. The initial reservoir pressure of each seam corresponds to the hydrostatic...

Hydrocarbon trapping in hydrodynamic salinity gradients: Williston Basin case studies

David M. Petty

AAPG Bulletin

... provide lateral leak points for stratigraphic traps, diagenetic traps, pressure cells, and compartments under hydrostatic conditions...

Repurposing Oil and Gas Wells to Produce Electricity Using the Greenloop Closed-Loop Geothermal Technology

Glenn Golla, Iwan Chandra, Kevin McCarthy, Joseph Scherer, Hollis Chin, Robert Klenner

Indonesian Petroleum Association

.... The downbore closed-loop heat exchanger only extracts heat and not mass from the resource, thereby conserving water and maintaining pressure...

Field experiment of enhanced coalbed methane-CO2 in the upper Silesian basin of Poland

Frank van Bergen, Henk Pagnier, Pawel Krzystolik

Environmental Geosciences (DEG)

... the reservoir, thereby reducing hydrostatic pressure. Because gas production rates per CBM well may be several orders of magnitude lower than natural-gas wells...

Static Versus Dynamic Interpretation in Petroleum Geology

Kinji Magara

AAPG Bulletin

... in the geologic past. If the excess fluid pressures (above hydrostatic pressure) or the fluid potentials are measured and if the values are plotted three...

Hydrodynamics of the Permian Basin

Robert P. McNeal

AAPG Special Volumes

... Many pressure relationships can be of economic importance, unless all units have both vertical and horizontal hydrostatic relationships--a condition...

Scaling Analysis of the Coupled Compaction, Kerogen Conversion, and Petroleum Expulsion During Geological Maturation; #42409 (2019)

Qingwang Yuan, Yashar Mehmani, Alan Burnham, Alexandre Lapene, Johannes Wendebourg, Hamdi Tchelepi

Search and Discovery.com

... expulsion Thermal expansion ∆𝑃𝑃 = 𝑃𝑃𝑓𝑓 − 𝑃𝑃ℎ (overpressure = pore pressure – hydrostatic pressure...

Regional Evaluation of Source Rock Quality in Azerbaijan from the Geochemistry of Organic-rich Rocks in Mud-volcano Ejecta

Gary H. Isaksen, Adil Aliyev, Scott A. Barboza, David Puls, Ibrahim Guliyev

AAPG Special Volumes

... inversion and (2) hydrostatic pressure. These can operate independently. The basic premise for the density inversion process is a buoyancy contrast within...

Characterization of a Sediment Core from Potential Gas-hydrate-bearing Reservoirs in the Sagavanirktok, Prince Creek, and Schrader Bluff Formations of Alaska's North Slope: Part 3Electrical Resistivity Core Studies

R. F. Sigal, C. Rai, C. Sondergeld, B. Spears, W. J. Ebanks Jr., W. D. Zogg, N. Emery, G. McCardle, R. Schweizer, W. G. McLeod, J. Van Eerde

AAPG Special Volumes

... resistivity, compressional velocity, and two components of shear velocity at a series of hydrostatic confining pressures. Confining pressure and fluid...

A Suggested Explanation for the Surface Subsidence in the Goose Creek Oil and Gas Field, Texas

L. C. Snider

AAPG Bulletin

... of the estimated volume of gas (calculated at 1,000 pounds per square inch pressure), oil, water, and sand which had be n removed. With these conclusions...

Relationship of Formation Pressures to Subsurface Temperatures and Oil-Gas Productivity of the Dnieper-Donets Depression

V. A. Vitenko, R. M. Novosiletskiy, Ya. Yu. Polutranko

Petroleum Geology: A Digest of Russian Literature

... m level ranged from 216 atm (Golubovsko-Il’ichev field) to 239 atm (Kegichev field). Calculated gradients of hydrostatic pressure of formation waters...

Water Flooding, Coring, Testing, and Logging: Chapter 7

C. Arnold Brown

AAPG Special Volumes

... of total flow measurement -- Gradiomanometer--records continuous profile of pressure gradient 3. Other Tools -- High-resolution thermometer -- Production...

Basin-centered Gas or Subtle Conventional Traps?

Wayne K. Camp

AAPG Special Volumes

... to a normal hydrostatic gradient (Law, 2002). The most commonly accepted origin of overpressure in basin-centered gas accumulations is thought...

Pressure Regime in the Upper Cretaceous Shales and Sandstones in the Washakie Basin, Wyoming

Ronald C. Surdam, Zung S. Jiao, Jie Liu

Wyoming Geological Association

... that overpressured oil and gas reservoirs are common in the deeper parts of the basin. The normal pressure-depth gradient of a free-standing column of water...

Fluviatile Obstacle Marks from the Wadis of the Negev (Southern Israel)

Iaakov Karcz

Journal of Sedimentary Research (SEPM)

... in front of the obstacle rises. As the velocity of the approaching flow is not uniform and decreases downwards, a vertical pressure gradient causes...

Circulation Patterns of Saline Groundwater Affected by Geothermal Heating--as Related to Waste Disposal

H. R. Henry , F. A. Kohout

AAPG Special Volumes

...: the hydraulic-pressure gradient, the geothermal gradient, and the salt-concentration gradient. In thick aquifers, interaction of these gradients may...

Skempton’s poroelastic relaxation: The mechanism that accounts for the distribution of pore pressure and exhumation-related fractures in black shale of the Appalachian Basin

Terry Engelder, and Rose-Anna Behr

AAPG Bulletin

... is drawn upward until it hits hydrostatic water pressure (blue line) with a pressure gradient of 10.2 MPa/km. Dashed lines show the max z and min z...

Assessment of a potential storage site for carbon dioxide: A case study, southeast Queensland, Australia

Jacques Sayers, Cameron Marsh, Adam Scott, Yildiray Cinar, John Bradshaw, Allison Hennig, Stuart Barclay, Ric Daniel

Environmental Geosciences (DEG)

... model run, the initial condition for the reservoir was assumed to be at hydrostatic pressure, with the total aquifer volume approximated by the six...

Hydrogeological Analysis in Support of Identifying Suitable CO2 Storage Sites and ECBM in the Sydney Basin, Australia, by Karsten Michael, Mohinudeen Faiz, and Mario Werner, #80051 (2009).

Search and Discovery.com

Table Rock Field-Frontier Formation: An Overpressured Reservoir

Roger G. Dickinson

Wyoming Geological Association

... and Washakie Basins of southern Wyoming. The presence of effective permeability above and below hydrostatic pressure will be critical to production rates...

Well and Foam Agent Maturation Process for Gas Well De-Liquification Utilizing Foam Assisted Lift (FAL) Technology Across Offshore East Kalimantan Fields, Indonesia

Putranda Yeremia Tumewu, Rinenggo Nugroho

Indonesian Petroleum Association

... creating hydrostatic pressure. Experience has demonstrated that selection of foaming agent cannot be completed in a lab under all circumstances. Field...

Methods for Determining Productivity of Structures in Oil and Gas Regions

N. N. Rostovtsev

Petroleum Geology: A Digest of Russian Literature

.... On the isobar map proposed by the author, in all water-bearing structures the hydrostatic pressure for water in the productive sequence is higher than...

Burial History of Central Texas Cretaceous Carbonates

Shawn Fullmer, F. Jerry Lucia

GCAGS Transactions

..., pressure solution, or solution transfer, is a process that involves the dissolution of minerals under greater than hydrostatic pressure...

Numerical simulation of water injection into layered fractured carbonate reservoir analogs

Mandefro Belayneh, Sebastian Geiger, Stephan K. Matthi

AAPG Bulletin

... fronts, a hydrostatic, far-field, fluid-pressure gradient (9.80665 103 Pa m1) was assigned parallel to the model edges. This was accomplished...

Subsurface Controls on Historical Subsidence Rates and Associated Wetland Loss in Southcentral Louisiana

Morton, Robert A., Buster, Noreen A., Krohn, M. Dennis

GCAGS Transactions

... gradient reported for a particular reservoir. In the Gulf Coast region, normal (hydrostatic) pressure gradients are about 0.465 psi/ft (Dickinson, 1953...