From Arrhenius to CO2 Storage: Part XIII: The Temperature Profile in a Grey Atmosphere

Lasse Amundsen, Martin Landrø

GEO ExPro Magazine

... or mixture in question, the atmospheric pressure and density can be shown to fall off exponentially with height. By eliminating ρ from the hydrostatic...

The Effect of Pressure Depletion on Geomechanical Stress and Fracture Behavior in Gunung Kembang Field

Dwi Hudya F., Sandra Natalia, David Castillo

Indonesian Petroleum Association

... to the reservoir interval. The pore pressure is essentially hydrostatic (8.45 – 8.6 ppg) to the top of the Baturaja Reservoir. Within the reservoir...

Porosity: Part 5. Laboratoy Methods

M. Peter Cone, David G. Kersey

AAPG Special Volumes

... pressure tests. These analyses indicate that significant differences exist between clastic and carbonate pore types. Sandstone Pore Systems Four basic...

Rejuvenate Unconventional Wells by Application of High-Pression Pulse Waves in the Fracture Network - An Alternative to Refracturing Operations

Charles Fensky, Youssef Fawaz, Mike Perri, Christian La Borderie, Gilles Pijaudier-Cabot, Antoine Jacques

Unconventional Resources Technology Conference (URTEC)

... be written as follows: dp 1 = µ 𝑣 + 𝛽) 𝜌𝑣 " dx K '( *+ Where is the pressure gradient in the medium, Kin is the intrinsic permeability (m2...

Laboratory Compaction Behavior of Siliciclastic and Carbonate Reservoirs: The Impact of Heterogeneity and What are the Differences?

Search and Discovery.com

Focal Mechanism Determination and Stress Inversion for Induced Seismicity Related to Shale Gas Hydraulic Fracturing

Yuyang Tan, Jun Hu, Zhengguang Zhao, Lei Li

Unconventional Resources Technology Conference (URTEC)

... by assuming a pore pressure gradient of 14.5kPa/m. The pore pressure increment ΔP is calculated using the following equation, (3) where Psurf denotes...

Niobrara Gas in Eastern Colorado and Northwestern Kansas

John P. Lockridge, Peter A. Scholle

Rocky Mountain Association of Geologists

... The Beecher Island zone is under-pressured relative to normal hydrostatic pressure for the drill depth on the eastern flank of the Denver basin. Reservoir...

Natural Gas In Devonian and Silurian Rocks of Permian Basin, West Texas and Southeast New Mexico

Gerald P. Salisbury

AAPG Special Volumes

... sea level. A slight pressure gradient may be present in this area and was surely present in the past. In contrast to the regular gas distribution...

Petroleum Geology of the Bakken Formation Williston Basin, North Dakota and Montana

Fred F. Meissner

AAPG Special Volumes

... pressures are evidently discretely confined to the Bakken/Sanish interval as shown by pressure gradient/depth profile at Antelope field, where overlying...

Nimocks-Johnson

Kent Crisler and Lynn Davidson

Kansas Geological Society

... @ 4523' w/250 sx Perforations Initial production 4352'-55' 4344'-47' Treatments Acid Initial Potential 96 BOPD Initial Formation Pressure Fort...

Effect of Recent Tectonic Movements, Oscillations of Sea Level, and Climate Changes on the Formation of Oil and Gas Fields in West Siberia

I. L. Kuzin

Petroleum Geology: A Digest of Russian Literature

... could have lowered hydrostatic pressure in the pay zones of the north by 10 atm and more. Those segments of time corresponding with sharp drops in sea...

Inexpensive, Portable Underwater Coring Device: RESEARCH-METHOD PAPER

Rena M. Bonem, Jonathan R. Pershouse

Journal of Sedimentary Research (SEPM)

... vent hole drilled near the top of the barrel to prevent the buildup of hydrostatic pressure while drilling and to enable easy removal of the core...

Hydro-Mechanical Behaviour Of Porous Carbonate Rocks Across The Brittle-Ductile Transition Monitored By Ultrasonic Wave Velocities

Search and Discovery.com

Technology Enabled Coiled Tubing Cleanout in Low Formation Pressure Wells

Adrian Weiss, Prama Djanaka, Campbell Kinnear

Indonesian Petroleum Association

... solution is described and the results of the implementation of the technique are examined. 2. The reservoir pressure is sub-hydrostatic (6 ppg...

Integrated 3D seismic and petrophysical workflow to predict elastic and geomechanical properties in the Wolfcamp Formation: A case study from the Midland Basin, Texas

Reinaldo Sabbagh, Shuvajit Bhattacharya

International Meeting for Applied Geoscience and Energy (IMAGE)

... minimum horizontal stress (Shmin) gradient. ISIP information is statistically filtered, and then we add hydrostatic pressure gradient to derive Shmin...

Storage of Gas in Water Sands

Douglas Ball , Peter Geddes Burnett

AAPG Special Volumes

... by gas injection at a pressure higher than the existing hydrostatic pressure. The fill rate and the cushion-gas volume are important additional factors...

Stylolite Development Post-Dates Rock Induration

H. V. Dunnington

Journal of Sedimentary Research (SEPM)

... controlled hydrostatic pressure and temperature could produce a better quantitative evaluation, but no published results of really significant experiments...

GEOLOGIC HISTORY OF LEWIS AND CLARK CAVERNS, MONTANA

Richard B. Aram

Montana Geological Society

... hydrostatic pressure, so phreatic water can flow uphill, or create elliptical side passages in the walls or ceiling. However, water fills only...

Differential Entrapment of Oil and Gas: A Fundamental Principle

William Carruthers Gussow

AAPG Bulletin

... and, in migrating updip, gas is constantly being evolved with decrease in hydrostatic pressure. Thus, at the time of migration every oil-filled trap...

Groundwater salinity and the effects of produced water disposal in the Lost Hills–Belridge oil fields, Kern County, California

Janice M. Gillespie, Tracy A. Davis, Michael J. Stephens, Lyndsay B. Ball, and Matthew K. Landon

Environmental Geosciences (DEG)

... the hydrostatic gradient. Shifts from the hydrostatic pressure gradient line indicate the presence of pressures in individual aquifer layers that imply...

Indication of Proximity of High-Pressure Fluid Reservoir, Louisiana and Texas Gulf Coast: GEOLOGICAL NOTES

James M. Forgotson, Sr.

AAPG Bulletin

... pressure, but at a shallower depth, as the same strata less than 150 ft away horizontally. This indicates to the writer that the hydrostatic head...

Deep Research Drillhole at Kilauea Volcano, Hawaii--Summary: Geothermal Energy

George V. Keller , John C. Murray , Charles J. Zablocki , Robert I. Tilling , Donald W. Peterson , Robert L. Christiansen

AAPG Special Volumes

..., and (4) an increasingly steep rise in temperature between 976 m and 1,262 m. The gradient toward the bottom of the hole is about 0.37°C/m and the maximum...

Chapter 10: Petrophysical and Mechanical Properties of Organic-rich Shales and Their Influences on Fluid Flow

Fred P. Wang, Ursula Hammes, Robert Reed, Tongwei Zhang, Xiaohu Tang, Qinghui Li

AAPG Special Volumes

... and in organic matter might have been caused by the high pressure and geopressure gradient. Similarly, organic-matter pores were also reported...

Igneous intrusion drives in-reservoir oil thermal cracking: A case from the Subei Basin, eastern China

Ao Su, Honghan Chen, Yue-xing Feng, Jian-xin Zhao, and Qiang Liu

AAPG Bulletin

... formation. The paleo-temperatures recorded by diagenetic quartz and calcites increased over time (Figure 14). Hydrostatic and lithostatic pressure...

Artificial Intelligence for Production Optimization in Unconventional Reservoirs

Oscar Molina, Camilo Mejia, Jerry Webb, Rebecca Nye

Unconventional Resources Technology Conference (URTEC)

... is likely overpressured so that pore pressure gradient is significantly above the hydrostatic gradient. According to EIA (2014), pressure gradient...