Results 241 to 250 of about 6,094,197 (290)

The role of phase trapping on permeability reduction in an ultra-deep tight sandstone gas reservoirs

Journal of Petroleum Science and Engineering, 2019
As the first external liquids that are introduced into a reservoir rock, suitable drill-in fluids not only prevent phase trapping-induced permeability reduction (also referred to as phase trapping damage) caused by the drill-in fluid itself but also ...
Dujie Zhang, Yili Kang, A. Selvadurai, Lijun You, T. Jian   +4 more
semanticscholar   +1 more source

Examination of disproportionate permeability reduction mechanism on rupture of hydrogels performance

Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2019
In this paper, the overall performance of a disproportionate permeability reduction mechanism for a sulfonated polyacrylamide copolymer and the chromium triacetate crosslinker was investigated.
M. Salehi, M. Soleimanian, A. M. Moghadam   +2 more
semanticscholar   +1 more source

Optimizing Disproportionate Permeability Reduction

Proceedings of SPE/DOE Symposium on Improved Oil Recovery, 2006
Abstract An idealistic goal of water shutoff technology is identifying materials that can be injected into any production well (without zone isolation) and will substantially reduce the water productivity without significantly impairing hydrocarbon productivity.
openaire   +1 more source

Prediction of permeability reduction due to silica scale deposition with a geochemical clogging model at Sumikawa Geothermal Power Plant

Geothermics, 2019
In experiments, flow rates through porous media were measured using raw brine (pH = 6.5, [SiO2] = 1130 mg/L) at Sumikawa Geothermal Power Plant in 2016. The flow rates decreased by up to 25% of the initial flow rate after 11 days.
Takumi Yanaze, S. Yoo, K. Marumo, A. Ueda   +3 more
semanticscholar   +1 more source

Reduction in Water Permeability of the Rabbit Conjunctival Epithelium by Hypotonicity

Experimental Eye Research, 1998
The effects of unilateral exposure to hypotonic media on the diffusional water permeability of the isolated rabbit conjunctiva were determined. For these experiments, a segment of the bulbar-palpebral conjunctiva was mounted between Ussing-type hemichambers under short-circuited conditions. Unidirectional diffusional water fluxes (Jdw) were measured in
O A, Candia, X P, Shi, L J, Alvarez
openaire   +2 more sources

Assay of ribonucleotide reduction in nucleotide‐permeable hamster cells

Journal of Cellular Physiology, 1978
AbstractRibonucleotide reduction was measured in Chinese hamster ovary cells made permeable to nucleotides by treatment with the detergent Tween‐80. When compared to the respective ribonucleotide reductase activity in partially purified cell extracts, CDP and GDP reductase activities in permeabilized cells responded in a similar fashion to ...
W H, Lewis, B A, Kuzik, J A, Wright
openaire   +2 more sources

Permeability Reduction Due to Salinity Changes

Journal of Canadian Petroleum Technology, 1968
Abstract X-ray diffraction, base exchange studies and core flood tests were made to explain the reduction in permeability of Berea sandstone which results from changing the salinity of flood water. It was shown that the reduction of permeability is related to the exchangeable cations on the clays and to particle ...
openaire   +1 more source

Permeability Reduction in Water Sensitivity of Sandstones

1981
A model was developed to describe the rapid decline of permeability of Berea sandstone resulting from its water sensitivity. The model is based on the release and capture of clay particles. The release of clay particles from the pore wall is approximated as a first order decay process and the rate at which particles leave the suspension to plug the ...
K. C. Khilar, H. S. Fogler
openaire   +1 more source

β2-Adrenoceptors mediate a reduction in endothelial permeability in vitro

European Journal of Pharmacology, 1995
The permeability of bovine pulmonary artery endothelial (CPAE) monolayers to Evans blue-labelled albumin (Evans blue-albumin) has been measured in vitro. Thrombin caused a concentration-dependent increase in Evans blue-albumin clearance across endothelial monolayers.
M J, Allen, R A, Coleman
openaire   +2 more sources

Governing Mechanism of Disproportionate Permeability Reduction

Journal of Petroleum Technology, 2001
This article is a synopsis of paper SPE 71510, "Segregated Flow is the Governing Mechanism of Disproportionate Permeability Reduction in Water and Gas Shutoff," by A. Stavland, SPE, and S. Nilsson, RF-Rogaland Research, originally presented at the 2001 SPE Annual Technical Conference and Exhibition, New Orleans, 30 September-3 October.
openaire   +1 more source