基于三维SGR模型的断层侧向封闭性定量表征——以尼日尔M油田为例

doi:10.11743/ogg20190615

Oil & Gas Geology ›› 2019, Vol. 40 ›› Issue (6): 1317-1323.doi: 10.11743/ogg20190615

• Methods and Technologies • Previous Articles Next Articles

Quantitative characterization of fault lateral sealing capacity based on 3-D SGR model-A case from M field,Niger

Lei Cheng¹, Yuan Xintao¹, Yang Xuanyu¹, Xu Qingyan¹, Wang Min¹, She Jiaofeng²

1. Research Institute of Petroleum Exploration & Development, PetroChina, Beijing 100083, China;
2. Exploration & Development Research Institute of Tarim Oilfield Company Ltd., PetroChina, Korla, Xinjiang 841000, China

Received:2018-03-13 Revised:2019-05-17 Online:2019-12-28 Published:2019-10-15

Abstract

Abstract: Many studies have been performed on sealing capacity of faults.However,most of the previous studies characterize sealing capacity based on the normal stress on faults,without considering the timing of compaction and diagenesis of fault.In the study,rock compaction strength is defined and used,in combination with Shale Gouge Ratio (SGR),to calculate the displacement pressure of faults.Then,the lateral sealing capacity of fault is quantitatively evaluated according to the differential replacement pressure between fault rock and reservoir.Finally,the method is applied to the M oilfield.The results show that when SGR is less than 11,the fault rock has no sealing capacity; when it is over 40,the fault rock is strong in sealing capacity; while when it ranges between 11 and 40,the relationship between SGR and maximum oil column height that the fault rock could support can be characterized by a linear equation.

Key words: Shale Gouge Ratio(SGR), hydrocarbon column height, rock compaction strength, displacement pressure, lateral sealing capacity of fault, fault rock, M field of Niger

CLC Number:

TE122.1

Lei Cheng, Yuan Xintao, Yang Xuanyu, Xu Qingyan, Wang Min, She Jiaofeng. Quantitative characterization of fault lateral sealing capacity based on 3-D SGR model-A case from M field,Niger[J]. Oil & Gas Geology, 2019, 40(6): 1317-1323.

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Quantitative characterization of fault lateral sealing capacity based on 3-D SGR model-A case from M field,Niger

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