AN INTEGRATED ASSESSMENT OF FAULT SEALING FOR OILFIELD A IN LUFENG SAG OF PEARL RIVER MOUTH BASIN

YANG Chaoqun; LEI Yongchang; QIU Xinwei; XIAO Zhangbo

doi:10.16028/j.1009-2722.2020.005

2021 Vol. 37, No. 2

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YANG Chaoqun, LEI Yongchang, QIU Xinwei, XIAO Zhangbo. AN INTEGRATED ASSESSMENT OF FAULT SEALING FOR OILFIELD A IN LUFENG SAG OF PEARL RIVER MOUTH BASIN[J]. Marine Geology Frontiers, 2021, 37(2): 54-61. doi: 10.16028/j.1009-2722.2020.005

Citation:

YANG Chaoqun, LEI Yongchang, QIU Xinwei, XIAO Zhangbo. AN INTEGRATED ASSESSMENT OF FAULT SEALING FOR OILFIELD A IN LUFENG SAG OF PEARL RIVER MOUTH BASIN[J]. Marine Geology Frontiers, 2021, 37(2): 54-61. doi: 10.16028/j.1009-2722.2020.005

AN INTEGRATED ASSESSMENT OF FAULT SEALING FOR OILFIELD A IN LUFENG SAG OF PEARL RIVER MOUTH BASIN

Shenzhen Branch of CNOOC China Limited, Shenzhen 518000, China

Received Date: 13 January 2020

Publish Date: 28 February 2021

Abstract

Abstract

The success rate of drilling for fault structure traps in not high in the Pearl River Mouth Basin, and the study of fault sealing is particularly important for enhancing the success rate. In recent years, the technical progress of fault sealing study is mainly reflected in the aspects of consideration of stress factors, quantitative study of shale smears, and consideration of the three-dimensional shape of the sections. A typical fault trap, the Oilfield A in the Lufeng sag, is selected as an example for such an integrated assessment following the ideas mentioned above. The key reasons for the success or failure of the different fault blocks has been analyzed individually. It is found that the stress difference, SGR difference, appearance difference on section are the reasons to cause the failure in one fault block. The experiences provided by the case is valuable for drilling in similar fault structure traps.
- fault sealing /
- stress on section /
- SGR /
- shale smear /
- three-dimensional shape of the section

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References

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