OPTIMIZATION DESIGN ON INJECTION PROCEDUREAND CHEMICAL SLUG SIZE OF ALKALINE/SURFAC TURE/POLYMER COMBINATION FLOODING IN DAQING OILFIELD

doi:10.3863/j.issn.1000-2634.2001.05.14

西南石油大学学报(自然科学版) ›› 2001, Vol. 23 ›› Issue (5): 46-46–49.DOI: 10.3863/j.issn.1000-2634.2001.05.14

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OPTIMIZATION DESIGN ON INJECTION PROCEDUREAND CHEMICAL SLUG SIZE OF ALKALINE/SURFAC TURE/POLYMER COMBINATION FLOODING IN DAQING OILFIELD

LI Hua-bin¹ SUI Jun²YANG Zhen-yu²

(1.Southwest Petroleum Inst,Nanchong Sichuan 637001, China；2.Daqing Oilfield Group LTD.)

Received:2001-02-03 Revised:1900-01-01 Online:2001-10-20 Published:2001-10-20

Abstract

Abstract:

The optimum injection procedure and chemical plug size of alkaline/surfactant/polymer (ASP) used in Block North 1 Daqing oilfield have been designed based on the laboratory formulation and earlier field tests and using the reservoir simulator COMP. Results show that oil recovery based on the slug size and injection precedence of pilot tests has increased by 10% Original Oil In Place (OOIP) by the optimization of increasing the viscosity of ASP system, injecting a secondary surfactant ASP slug, using a small preflush polymer slug and following a gradient buffer. As a result, much attention should be paid to the injecting precedence and slug size in order to enhance the economic effects of ASP technology.

Key words: ASP, combination flooding, mathematical analysis, optimization design

CLC Number:

TE357.46

LI Hua-bin SUI Jun YANG Zhen-yu. OPTIMIZATION DESIGN ON INJECTION PROCEDUREAND CHEMICAL SLUG SIZE OF ALKALINE/SURFAC TURE/POLYMER COMBINATION FLOODING IN DAQING OILFIELD[J]. 西南石油大学学报(自然科学版), 2001, 23(5): 46-46–49.

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OPTIMIZATION DESIGN ON INJECTION PROCEDUREAND CHEMICAL SLUG SIZE OF ALKALINE/SURFAC TURE/POLYMER COMBINATION FLOODING IN DAQING OILFIELD

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