Marine Seismic Sources: Part VI: High Frequency Signals From Air-Guns

Martin Landrø, Lasse Amundsen

GEO ExPro Magazine

... is approximately –1.3 bars, assuming linear theory. The hydrostatic pressure at the hydrophone position is 1.2 bars, which means that the total pressure...

Hydrocarbon Production, Surface Subsidence, and Land Loss in Louisiana

Byron Miller

GCAGS Transactions

... Bottom Hole Pressure (BHP) data vs depth for producing wells in the fields studied, illustrating normal-hydrostatic, pressure-depleted, and geopressured...

Evaluation of Late Cap Rock Failure and Hydrocarbon Trapping Using a Linked Pressure and Stress Simulator

A. E. Lothe, H. Borge, . Sylta

AAPG Special Volumes

...Evaluation of Late Cap Rock Failure and Hydrocarbon Trapping Using a Linked Pressure and Stress Simulator A. E. Lothe, H. Borge, . Sylta 2005 163 178...

Triangle Zone Geometry, Terminology and Kinematics

Peter B. Jones

CSPG Bulletin

... sediment may Figure 15. Development of high values of , (hydrostatic pressure/lithostatic pressure) at different horizons in a sedimentary sequence...

The Role of Poroelasticity in Normal Fault Reactivation Triggered by Hydraulic Fracturing

Mahdi Haddad, Peter Eichhubl

Unconventional Resources Technology Conference (URTEC)

... = τ − μs(σn−Pp), 5 (4) where τ is shear stress, σn is total normal stress, Pp is pore pressure, and μs is the static friction coefficient (0.6...

Lithologic Gradients in Marine Bar, Cadeville Sand, Calhoun Field, Louisiana

Frank A. Exum

AAPG Bulletin

... spacing. Original reservoir pressure was 8,201 psi, substantially above the 4,275-psi pressure predicted for a normal gradient of 0.45 psi/ft. Through...

Porosity Dependence on Temperature: Limits on Maximum Possible Effect

Lee P. Stephenson

AAPG Bulletin

... the porosity-depth relations for a sediment of given age under fixed pressure and temperature gradients. Thus we commonly attribute the systematic...

Application of migration modeling to unconventional reservoirs: An example from the Montney Formation northeastern British Columbia

Victoria Chevrot, Nicholas B. Harris, Stephany Hernandez Medina, Noga Vaisblat

International Meeting for Applied Geoscience and Energy (IMAGE)

... Modelling Group® software package. pressure gradient of 9.79 kPa/m and two geothermal gradients of 25 and 40°C/km. The density of methane increases...

Characteristics of Natural Hydrocarbon Systems of Fields of the Southwest Regions of the Yakutsk ASSR

V. Ye. Bakin, Yu. I. Yakovlev

Petroleum Geology: A Digest of Russian Literature

.... Formation pressure in individual horizons is 4.0-7.0 mpa below the hydrostatic pressure, and formation temperature at a depth of 1500 m is 6-10°C...

Abstract: Integrating Geology and Velocity Data to Constrain Pressure Prediction in Foldbelts; #90063 (2007)

Search and Discovery.com

Some Uncertainties in Predicting Overpressure in Indonesia’s Sedimentary Basins

Search and Discovery.com

Outlining Shale Masses By Geophysical Methods

A. W. Musgrave , W. G. Hicks

AAPG Special Volumes

... overburden pressure increases at the rate of 1 psi per foot of depth. This is the normal increase with depth of burial. The normal hydrostatic...

Post-Drill Pore Pressure Study for Infill Well Design to Uncover Deep Gas Potential Left Behind Primary Drilling Campaign (Gulf of Thailand); #42321 (2018)

Evgeny Kaygorodtsev, Roscharin Charoensiri, Andee Marksamer, Mayura Dangprasitthiporn

Search and Discovery.com

... pressure gradients between the shallow and deep formations, adjacent fault blocks, and over some distances within individual fault blocks. The new...

Origin of Fracture Porosity--Example from Altamont Field, Utah

Wayne Narr , John B. Currie

AAPG Bulletin

... history of a rock in which fluid pressure remains hydrostatic (^lgr=0.45) throughout its burial history; otherwise, all model input parameters...

Experimental Deformation of Sedimentary Rocks Under Confining Pressure: Tests at High Temperature

John Handin , Rex V. Hager, Jr.

AAPG Bulletin

... units--bars, normal atmospheres, and kg./cm.2--are not large. Since the mechanical properties are not sensitive to confining pressure differences...

Real-Time Drilling Optimisation „ Driving Drilling Excellence

Abhijit Barhate, Piyush Patel, Egil Abrahamsen

Australian Petroleum Production & Exploration Association (APPEA) Journal

... density. The thermal expansion and compressibility of the fluid influences both the hydrostatic pressure and the pressure losses. In addition...

Geomechanics Helped to Understand the Underperformance of Fracture Treatments and Optimization for Future Operations

Khalil Rahman, Cahyo Nugroho, Dicky Hilmawan, Sugiri Umar Khiram, Wahyu Syukur

Indonesian Petroleum Association

.... Slight density data modifications were required in the enlarged hole sections. Measured pore pressure data and normal compaction trends of density...

Reservoir Water Resistivities and Possible Hydrodynamic Flow in Denver Basin

William L. Russell

AAPG Bulletin

.... If the fluid pressures in the Paleozoic reservoirs are normal, a pressure gradient would be produced which would tend to force the more saline waters...

Quantifying the Benefit from Pressure Gradient Data in Wavefield Reconstruction for Time-Lapse Seismic, #40843 (2011)

Phil Christie, Kurt Eggenberger, Everhard Muyzert, Massimiliano Vassallo, Ali Özbek

Search and Discovery.com

... gradients of the acoustic pressure wavefield in towed marine seismic surveys, this would greatly alleviate the spatial sampling issue by at least...

Interpretation of Piezocone Penetrometer Profiles in Sediment from the Mackenzie Trough, Canadian Beaufort Sea

Kathryn Moran, Philip R. Hill, Steve M. Blasco

Journal of Sedimentary Research (SEPM)

... be equal to hydrostatic (no excess pore pressure) or greater than hydrostatic (positive excess pore pressure). Settings which may give rise to positive...

Potential salinity-driven free convection in a shale-rich sedimentary basin: Example from the Gulf of Mexico basin in south Texas

John M. Sharp Jr., Thomas R. Fenstemaker, Craig T. Simmons, Thomas E. McKenna, Jennifer K. Dickinson

AAPG Bulletin

.... Bjorlykke et al. (1988) demonstrated that free convection driven solely by normal temperature gradients is unlikely if laterally extensive homogeneous...

Compaction and Cementation of Sand Under Conditions Simulating Deep Burial

John C. Maxwell

Tulsa Geological Society

...) composition of sediments, (2) composition of interstitial fluids, (3) temperature, (4) time, (5) weight of overburden, and (6) hydrostatic pressure...

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...

Geothermal Parameters in the Powder River Basin, Wyoming

Richard W. Davis

Wyoming Geological Association

... that it is a normal occurrence. The mismatch means that thermal gradients from deep, consolidated sediments extrapolated to the surface must...

Role of Faults in the Formation of Hydrocarbon Accumulations and Accompanying Overpressure Zones (In the Example of the Timan-Pechora and West Siberian Platforms)

O. A. Ulybin, V. P. Trunov

Petroleum Geology: A Digest of Russian Literature

...-Kolvin, B-Varandey-Adzvin, C-Yamal-Pur, D-Salym, E-Krasnoleninsk; 4-fields with overpressure (a) and with normal hydrostatic pressure (b); 5-Ural fold zone...