THE MAIN CONTROL FACTORS ON EFFECTIVE PALEOGENE PRIMARY OIL AND GAS MIGRATION:A COMPARATIVE STUDY OF EXPLORATION RESULTS FROM XIJIANG A AND XIJIANG B STRUCTURAL TRAPS, ZHUJIANGKOU BASIN

LIU Daoli; DU Zhongming; XU Xinming; WU Jing; ZHANG Qin; TAO Yu; DONG Wei; CHEN Shenghong

doi:10.16028/j.1009-2722.2017.10005

2017 Vol. 33, No. 10

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LIU Daoli, DU Zhongming, XU Xinming, WU Jing, ZHANG Qin, TAO Yu, DONG Wei, CHEN Shenghong. THE MAIN CONTROL FACTORS ON EFFECTIVE PALEOGENE PRIMARY OIL AND GAS MIGRATION:A COMPARATIVE STUDY OF EXPLORATION RESULTS FROM XIJIANG A AND XIJIANG B STRUCTURAL TRAPS, ZHUJIANGKOU BASIN[J]. Marine Geology Frontiers, 2017, 33(10): 40-48. doi: 10.16028/j.1009-2722.2017.10005

Citation:

LIU Daoli, DU Zhongming, XU Xinming, WU Jing, ZHANG Qin, TAO Yu, DONG Wei, CHEN Shenghong. THE MAIN CONTROL FACTORS ON EFFECTIVE PALEOGENE PRIMARY OIL AND GAS MIGRATION:A COMPARATIVE STUDY OF EXPLORATION RESULTS FROM XIJIANG A AND XIJIANG B STRUCTURAL TRAPS, ZHUJIANGKOU BASIN[J]. Marine Geology Frontiers, 2017, 33(10): 40-48. doi: 10.16028/j.1009-2722.2017.10005

THE MAIN CONTROL FACTORS ON EFFECTIVE PALEOGENE PRIMARY OIL AND GAS MIGRATION:A COMPARATIVE STUDY OF EXPLORATION RESULTS FROM XIJIANG A AND XIJIANG B STRUCTURAL TRAPS, ZHUJIANGKOU BASIN

Shenzhen Branch of CNOOC (China) Limited, Shenzhen 518054, China

Received Date: 15 May 2017

Publish Date: 28 October 2017

Abstract

Abstract

Based upon the exploration data from the major Xijiang depression, we put forward in this paper the two concepts of effective primary migration and effective primary migration area.The effective primary migration of oil and gas depends upon the capability of remigration or secondary migration of oil and gas after charging into the sand body close to the source rocks.The effectiveness is depending on two main factors:one is the occurrence of large-scale sand body near the hydrocarbon source rock and the other is the availability of coarse pore throats within the sand body.The former will decide if there is enough oil and gas for effective primary migration, the latter determines the priority of filling direction of oil and gas.Based on this working hypothesis, we made a comparison between the Xijiang A and Xijiang B structural traps with the exploration results available and discussed the failure of exploration in the Xijiang A region.The conclusion may help further understanding the Paleogene hydrocarbon accumulation in this region and provide a case for the endeavor to look for similar reservoirs.
- primary migration /
- hydrocarbon source rocks /
- large-scale sand body /
- coarse pore throat /
- Paleogene

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