Results 231 to 240 of about 353,183 (265)
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Diagenetic Mechanisms of Porosity and Permeability Reduction and Enhancement
1994Abstract This segment of the notes presents an overview of diagenetic processes of porosity and permeability destruction and enhancement. In the limited space available here, it is impossible to cover in any detail the vast literature on this subject. Thus, only the volumetrically important mechanisms of reservoir quality modification
Michael D. Wilson, Peter T. Stanton
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Further Insights into the Mechanism of Disproportionate Permeability Reduction
SPE Annual Technical Conference and Exhibition, 2017Abstract Disproportionate permeability reduction (DPR) is a phenomenon whereby many water-soluble polymer solution and polymer gels reduce the permeability to water flow more than to oil or gas flow. DPR is important for some gels that are applied to production wells in water-shutoff treatments.
Bin Liang +4 more
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The Effect Of Maximum Suspension Size On Permeability Reduction
Annual Technical Meeting, 1988Abstract The productivity of many hydrocarbon-bearing formations appears to be reduced during water flooding operations. The reason for this reduction is mainly attributed to the permeability damage of the formation surrounding the bore hole. A possible cause of this damage is the precipitation of suspensions on the
Zaiad Aswad, N. Rahim, A. Taha
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Modeling Permeability Reduction Caused by Asphaltene Deposition
SPE Annual Technical Conference and Exhibition, 2005Abstract This study formulates a model for estimating permeability impairment caused by asphaltene deposition. The model is based on a mass balance and is capable of predicting permeability reduction in either vertical or horizontal wells. The model accounts for both the effects of position in the reservoir and time.
Ali Garrouch, Feras Al-Ruhaimani
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Stress-Induced Permeability Reduction in Fissured Reservoirs
SPE Annual Technical Conference and Exhibition, 1993Abstract Stresses near any wellbore are different and likely to be higher than the far-field stresses. In addition, fluid production and the corresponding pressure drawdown lead to an increase of the effective stress. This increase results in a substantial reduction in the corresponding permeability, especially if the latter is primarily
Hubert Buchsteiner +2 more
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Disproportionate Permeability Reduction by Soft Preformed Microgels
SPE/DOE Symposium on Improved Oil Recovery, 2004AbstractInjecting soft, stable and size-controlled microgels to reduce water production is a new concept, introduced some years ago, we refer to as STARPOL process. Microgels specifically designed for water shutoff (WSO) treatments do not contain toxic products and can be produced to be fully self-repulsive.
Guy Chauveteau +5 more
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Disproportionate Permeability Reduction With Pore-Filling Gels
SPE Journal, 2009Summary An idealistic goal of water-shutoff technology is that of identifying materials that can be injected into any production well (without zone isolation) and that will substantially reduce the water productivity without significantly impairing hydrocarbon productivity.
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Reduction of Increased Vascular Permeability by Calcitonin
Pharmacology, 2008L, Riesterer, R, Jaques
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Reduction of Gas and Water Permeabilities Using Gels
SPE Production & Facilities, 1995SummaryWe investigated how different types of gels reduce permeability to water and gases in porous rock. Five types of gels were studied, including (1) a "weak" resorcinol-formaldehyde gel, (2) a "strong" resorcinol-formaldehyde gel, (3) a Cr(III)-xanthan gel, (4) a Cr(III)-acetate-HPAM gel, and (5) a colloidal-silica gel.
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Reduction of Permeability of Fine-Grained Concrete
2022Inna Egorochkina, Elena Shlyakhova
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