Author: Robert D. SydanskPublisher:
ISBN: 9781555633028
Category : Technology & Engineering
Languages : en
Pages : 138
Book Description
Reservoir Conformance Improvement
Author: Robert D. SydanskPublisher:
ISBN: 9781555633028
Category : Technology & Engineering
Languages : en
Pages : 138
Book Description
Hydrogels Applied for Conformance-Improvement Treatment of Oil Reservoirs
Author: Fernanda G. C.Publisher:
ISBN:
Category : Technology
Languages : en
Pages :
Book Description
This chapter aims at presenting a review of gelling polymer systems that are commercially available or under academic development with potential to control the anisotropic permeability profile of heterogeneous oil reservoirs. In these reservoirs, the oil recovery and sweep efficiency tend to be low, even after applying secondary and enhanced oil recovery methods, because the injected fluid flows preferably through the matrix's most permeable regions leaving behind part of the displaceable oil retained at the nonswept volume. For that, cross-linked polymers can be used to plug the high-permeability main paths by means of: (i) the formation of an in situ hydrogel or (ii) the adsorption or swelling of pre-cross-linked hydrogel within the reservoir pores, thus causing the diversion of the subsequently injected fluid to low-permeability zones and/or preventing the channeling and early breakthrough of the injected fluid (water or gas) in production wells. The selection of the most suitable hydrogel for the reservoir conformance-improvement treatment should take into account the nature of the conformance problem, the reservoir's lithology, mineralogy, temperature, pH value, salinity, and hardness of the formation water, as well as the gelling system toxicity and cost.
Improving Reservoir Conformance Using Gelled Polymer Systems
Author: University of KansasPublisher:
ISBN:
Category :
Languages : en
Pages : 164
Book Description
Improving Reservoir Conformance Using Gelled Polymer Systems
Author: Improving Reservoir Conformance Using Gelled Polymer Systems. Annual Report, September 25, 1994 - September 24, 1995
Author: Improving Reservoir Conformance Using Gelled Polymer Systems. Eleventh Quarterly Report, April 1, 1995-June 30, 1995
Author: Improving Reservoir Conformance Using Gelled Polymer Systems. Annual Report, September 15, 1993-September 24, 1994
Author: Improving Reservoir Conformance Using Gelled Polymer Systems. Quarterly Progress Report, July 1--September 30, 1994
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 9
Book Description
The general objectives are to (1) to identify and develop gelled polymer systems which have potential to improve reservoir conformance of fluid displacement processes, (2) to determine the performance of these systems in bulk and in porous media, and (3) to develop methods to predict the capability of these systems to recover oil from petroleum reservoirs. This work focuses on three types of gel systems an aqueous polysaccharide (KUSP 1) system that gels as a function of pH, the chromium(III)-polyacrylamide system and the aluminum citratepolyacrylamide system. Laboratory research is directed at the fundamental understanding of the physics and chemistry of the gelation process in bulk form and in porous media. This knowledge will be used to develop conceptual and mathematical models of the gelation process. Mathematical models will then be extended to predict the performance of gelled polymer treatments in oil reservoirs. Technical progress is described for three studies: Physical and chemical characterization of gel systems (chemical reaction kinetics of KUSP1); Mechanisms of in situ gelation; and Mathematical modeling of gel systems.
Improving Reservoir Conformance Using Gelled Polymer Systems. Quarterly Report, September 25--December 24, 1993
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 5
Book Description
The general objectives are to (1) to identify and develop gelled polymer systems which have potential to improve reservoir conformance of fluid displacement processes, (2) to determine the performance of these systems in bulk and in porous media, and (3) to develop methods to predict the capability of these systems to recover oil from petroleum reservoirs. This work focuses on three types of gel systems -- an aqueous polysaccharide (KUSP1) system that gels as a function of pH, the chromium(III)-polyacrylamide system and the aluminum citrate-polyacrylamide system. Laboratory research is directed at the fundamental understanding of the physics and chemistry of the gelation process in bulk form and in porous media. This knowledge will be used to develop conceptual and mathematical models of the gelation process. Mathematical models will then be extended to predict the performance of gelled polymer treatments in oil reservoirs. Results to date are summarized.
Author: