Pore-Size Distribution in Sandstones: GEOLOGIC NOTE

A. S. T. Netto

AAPG Bulletin

... to a poliurethane foam) in which Pc = 2^sgr cos^Thgr/X , in which Pc is capillary pressure, ^sgr is the interfacial tension, ^Thgr is the contact angle...

Irreducible Water Saturation and Water Saturation Comparison as an Alternative Approach for Hydrocarbon Identification on Shaly Sand Reservoirs in Mature Tunu Field, Mahakam Delta

Febrina Ari Restuti, Haris Kurniawan Hidayat, Taufik Anwar, Yulianto Jong, Supriady

Indonesian Petroleum Association

... to displace the water from the core sample. Capillary pressure (Pc) is the pressure difference across the interface between two immiscible fluids...

Scaling for Wettability Alteration Induced by Addition of Surfactants in Completion Fluids: Surfactant Selection for Optimum Performance

Fan Zhang, I Wayan Rakananda Saputra, Imad Adel, David S. Schechter

Unconventional Resources Technology Conference (URTEC)

... as it was determined that capillary pressure is the dominant driving force of the production enhancement. The plot of Pc and RF is shown on the right sub...

Calculation of Permeability and Initial Water Saturations from Wireline Logs in a Mature Carbonate Reservoir

F. Jerry Lucia, Jeffrey A. Kane

AAPG Special Volumes

... of the capillary-pressure curve; Pc = capillary pressure in psi; and Pd = entry capillary pressure corrected for surface effects in psi.The values...

Subtle Seals and Fluid-flow Barriers in Carbonate Rocks

Edward B. Coalson, Steven M. Goolsby, Mark H. Franklin

Rocky Mountain Association of Geologists

... by capillary forces. Upper: Before a seal will leak, buoyancy pressure in the hydrocarbon phase (black) must overcome capillary pressure in the pore throats...

Determination of Confined Fluid Phase Behavior Using Modified Peng-Robinson Equation of State

Gang Yang, Zhaoqi Fan, Xiaoli Li

Unconventional Resources Technology Conference (URTEC)

... developed to compute the phase behavior and thermodynamic properties of the confined fluids by coupling critical property shift and capillary pressure...

Minimum Miscibility Pressure in Conventional and Unconventional

Tadesse Weldu Teklu, Najeeb Alharthy, Hossein Kazemi, Xiaolong Yin, Romona M. Graves, Ali M. Al-Sumaiti

Unconventional Resources Technology Conference (URTEC)

... there is no capillary pressure ( Pc  0) . The equilibrium of gas (V) and liquid (L) phases under the condition of capillarity is described...

Adsorption and Capillary Condensation in Heterogeneous Nanoporous Shales

Yixin Ma, Jin-Hong Chen, Ahmad Jamili

Unconventional Resources Technology Conference (URTEC)

... difference is known as capillary pressure shown in Eq. 20: PC = Pnon−wetting − Pwetting...

Petrophysical Analysis of Piceance Basin Tight Gas Sandstones, Northwest Colorado, To Distinguish Wet Sands from Gas-Bearing Sands, and To Categorize Rock Quality Variation by Incorporating Capillary Pressure Interpretations

Michael Holmes, Antony M. Holmes, Dominic I. Holmes

Rocky Mountain Association of Geologists

... from inter-granular porosity. The capillary pressure value is termed Pc model change, or Pcmc, and the saturation value is termed Sw model change...

Permeability and Tortuosity Variations in Naturally Fractured Carbonate Reservoir, #41630 (2015).

Adenike Tokan-Lawal, Masa Prodanovic, Peter Eichhubl

Search and Discovery.com

... as the tortuosity of the pore space and the capillary pressure-water saturation (Pc-Sw) relationship in the Niobrara. The tortuosity and capillary pressure (Figure...

Incorporating capillary pressure, pore throat aperture radii, height above free-water table, and Winland r35 values on Pickett plots

Roberto Aguilera

AAPG Bulletin

... with a slope equal to -m + 2.8125n for intervals at irreducible water saturation with constant aRw and constant capillary pressure, Pc. Extrapolation...

Evaluating Reservoir Compartmentalization by Correlating Laboratory and Field Data

Michael J. Heymans

Rocky Mountain Association of Geologists

... A method for evaluating the presence or absence of reservoir compartments using capillary pressure principles is presented. In particular the method...

Abstract: Unsteady Relative Permeability Measurement Considering Capillary Pressure and Saturation Profiles from Magnetic Resonance Imaging; #90319 (2018)

Jun Gao, Hyung T Kwak, Ahmad M Harbi, Bruce J Balcom

Search and Discovery.com

...Abstract: Unsteady Relative Permeability Measurement Considering Capillary Pressure and Saturation Profiles from Magnetic Resonance Imaging; #90319...

Abstract: Influence of Diagenetic Illite on the Permeability of a North Sea Sandstone Reservoir: An Image Analysis-Based Approach, by S. Belin, Y. Anguy, J. B. Ferm, and B. Fritz; #90937 (1998).

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Integrated core-log petrofacies analysis in the construction of a reservoir geomodel: A case study of a mature Mississippian carbonate reservoir using limited data

Saibal Bhattacharya, John H. Doveton, Timothy R. Carr, Willard R. Guy, Paul M. Gerlach

AAPG Bulletin

... reservoir petrofacies is difficult in complex (carbonate) reservoirs. In a bottom-up approach, raw capillary pressure (Pc) data were plotted on the Super...

Abstract: Reconciliation of Pc-Derived and Elogs-Derived Water Saturation on the Al Khalij Field - Offshore Qatar, by B. Lalanne, R. Boichard, C. Maza, M. Rebelle, and N. Bounoua, #90188 (2014)

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Application of Integrated Core and 3-D Image Rock Physics to Characterize Niobrara Chalk Properties Including Relative Permeability With Bound Water Effect

Alan P. Byrnes, Shawn Zhang, Lyn Canter, Mark Sonnenfeld

Unconventional Resources Technology Conference (URTEC)

... Core analysis (CA) is challenged when physically measuring permeability (K), capillary pressure (Pc), “irreducible” water saturation (Swi...

Engineering Concepts Useful in Oil Finding

J. J. Arps

AAPG Bulletin

...-wet formation and its capillary pressure, Pc, is shown as the S-shape curve on the lower left-hand part of Figure 1. Capillary pressure is defined...

Application of the Lucia Method in Carbonate Petrophysics

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Estimation of Recovery Efficiency by Visual Observation of Pore Systems in Reservoir Rocks: REPLY

N. C. Wardlaw, J. P. Cassan

CSPG Bulletin

... from the pore into an adjacent throat, is: where: -- Pc = capillary pressure gradient Pt = capillary pressure at throat Pp = capillary pressure in pore...

So: How Many Grid Blocks Do I Need?, #40417 (2009)

Edmund Stephens and Mark Bentley

Search and Discovery.com

... & efficient Short learning cycle Comparing static vs. dynamic gridding Geocellular model Flow model Structure Pressure Stratigraphy Saturation...

Capillary Pressures in Stratigraphic Traps

Robert R. Berg

AAPG Bulletin

...) and rearranging terms, EQUATION (4) where pc is capillary pressure and is equal to the pressure difference (po - pw). Because the oil is spherical...

Abstract: Effects of Petrophysical Properties on Drainage and Imbibition Capillary Pressures in Western Siberia Sandstones; #90254 (2016)

Kazimir Kovalenko, Alexander Petrov

Search and Discovery.com

... of reservoir properties on drainage and imbibition capillary pressure curves and model oil saturation in representative Jurassic siliclastic rocks...

Optimizing the Value of Cuttings Samples

Chuck Segrest

West Texas Geological Society

.... The development of a capillary pressure curve for the cuttings sample is the result of these calculations. Thomeer’s work shows that the Sb/Pc ratio...

Abstract: A Single-Shot Measurement of Capillary Pressure Curves Using a Single-Speed Centrifuge and Magnetic Resonance Imaging; #90211 (2015)

Bruce Balcom, Quan Chen, and Derrick Green

Search and Discovery.com

...Abstract: A Single-Shot Measurement of Capillary Pressure Curves Using a Single-Speed Centrifuge and Magnetic Resonance Imaging; #90211 (2015) Bruce...