STUDY ON GENETIC MODEL OF REMAINING OIL DISTRIBUTION AFTER POLYMER FLOODING

doi:10.3863/j.issn.1674-5086.2010.03.020

西南石油大学学报(自然科学版) ›› 2010, Vol. 32 ›› Issue (3): 107-111.DOI: 10.3863/j.issn.1674-5086.2010.03.020

• 石油与天然气工程 • Previous Articles Next Articles

STUDY ON GENETIC MODEL OF REMAINING OIL DISTRIBUTION AFTER POLYMER FLOODING

DU Qing-jun¹ HOU Jian^2，1 XU Yao-dong³ SHU Qing-lin⁴ ZHANG Ben-hua⁴

1.College of Geo-resources and Information，China University of Petroleum，Dongying Shandong 257061，China 2.College of Chemistry Science and Chemical Engineering，China University of Petroleum，Changping Beijing 102249，China；3.Research Institute of Geological Science，Shengli Oilfield Company，SINOPEC，Dongying Shandong 257015，China；4.Gudao Oil Factory，Shengli Oilfield Co. Ltd.，SINOPEC，Dongying Shandong 257231，China

Received:1900-01-01 Revised:1900-01-01 Online:2010-06-20 Published:2010-06-20

Abstract

Abstract: In view of the fact that remaining oil distribution becomes more dispersed after polymer flooding，study on its formation mechanism and morphologic distribution is the key to enhance oil recovery.Based on the cause of remaining oil distribution after polymer flooding，five models，such as the region of lithologic change，the region of interlayer interference，local high point，the top of the thick oil layer and the retained region caused by pressure balance，are established through reservoir simulation technology.Meanwhile，quantitative calculation method of different models are put forward.It is indicated that the main models of remaining oil distribution after polymer flooding are the top of the thick oil layer and the retained region caused by pressure balance.Moreover，the main mechanism of polymer flooding is profile adjustment during polymer injection period，and increasing sweep area is the primary mechanism during water-cut restoring period and subsequent water flooding period.Compared with suppositional water flooding，the main response stage of polymer flooding to enhance oil recovery is the water-cut restoring period.

Key words: polymer flooding, remaining oil distribution, genetic model, enhanced oil recovery, numerical simulation

CLC Number:

TE331

DU Qing-jun HOU Jian;XU Yao-dong SHU Qing-lin ZHANG Ben-hua. STUDY ON GENETIC MODEL OF REMAINING OIL DISTRIBUTION AFTER POLYMER FLOODING[J]. 西南石油大学学报(自然科学版), 2010, 32(3): 107-111.

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STUDY ON GENETIC MODEL OF REMAINING OIL DISTRIBUTION AFTER POLYMER FLOODING

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