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

雷诚; 袁新涛; 杨轩宇; 徐庆岩; 王敏; 佘姣凤

doi:10.11743/ogg20190615

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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
Quantitative characterization of fault lateral sealing capacity based on 3-D SGR model-A case from M field,Niger
2019年40卷第6期页码：1317-1323
网络首发：2019-12-28，

纸质出版：2019
DOI： 10.11743/ogg20190615
稿件说明：

移动端阅览

雷诚, 袁新涛, 杨轩宇, 等. 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[J]. 石油与天然气地质, 2019,40(6):1317-1323. DOI： 10.11743/ogg20190615.

Lei Cheng, Yuan Xintao, Yang Xuanyu, et al. Quantitative characterization of fault lateral sealing capacity based on 3-D SGR model-A case from M field,Niger[J]. 2019, 40(6): 1317-1323. DOI： 10.11743/ogg20190615.

摘要

前人对断层封闭性的研究很多，但大多都基于断层受到的正压力大小对其进行表征，而对于断层压实成岩时间这一因素考虑较少。本文定义岩石压实强度，并利用该参数与断层岩的断层泥比率（SGR）值计算断层的排替压力；根据断层岩与储层的排替压力差定量表征断层侧向封堵性，最后将该方法应用到M油田。研究表明，在M油田，SGR值小于11时，断层岩没有封闭能力；SGR值大于40时，断层岩具有很强的封闭能力；介于两者之间时，断层岩SGR值与其能够封闭的最大烃柱高度（H

max

）存在线性关系。

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.