火成岩油气储层构造裂缝发育程度预测研究  

The method of forecasting the developmental characteristics of tectoclase in igneous reservoir

作　　者：刘景新[1] 

机构地区：[1]中国石化股份胜利油田分公司石油开发中心,山东东营257000

出　　处：《西北大学学报（自然科学版）》2014年第2期279-284,共6页Journal of Northwest University（Natural Science Edition）

基　　金：中国石油天然气股份有限公司科技风险创新基金资助项目(060511-1-8)

摘　　要：通过对商741断块火成岩取心中裂缝发育特征及该区断裂系统的分析认为,构造裂缝的发育程度与断层密切相关,断面率可定量描述断层的发育程度。断面率为断层断面的面积与研究区面积的比值,断面的面积与研究区面积易于测量,进而可以通过对研究区内已知井点的裂缝发育程度与断面率的关系,并依据断面率的分布特征预测裂缝的相对发育程度。依据提出的断面率计算方法,对商741断块沙三中断面率分布特征进行了分析,并综合断面率与裂缝发育程度的相关性分析结果,认为研究区内有利的裂缝发育区为研究区北部、西部和东南部的商742—商745井区、商741—商74井区和商747井区的3个区域。By the research of the developmental characteristics of fractures and the rift system in Shang 741 fault block,it was found that the distribution of the fault and the tectoclase were affected by tectonic stress and the developmental characteristics of fractures was correlated with the fault.So the fault surface ratio was set up to describe the distribution of fault,the fault surface ratio is the ratio of the fault surface and layer surface,and the area of the fault surface and formation are easy measured,by researching the relationship between the developmental gradation of fractures and the fault surface ratio in known wells,the developmental gradation of fractures in reservoir can be forecasted by the distribution of fault surface ratio.On the basis of the method of the fault surface ratio computing,the distribution of fault surface ratio in Shang 741 fault block was analyzed,and after the research of the relationship between the developmental gradation of fractures and the fault surface ratio in Shang.741 fault block,the fracture ranges of profitability were forecasted in the studied area.There are 3 range of profitability which are the Shang 742-Shang 745 well area,Shang 741-Shang 74 well area and Shang 747 well area in the north,west and southeast of work area.

关 键 词：油气储层 火成岩 构造裂缝 断层 裂缝预测 

分 类 号：TE122[石油与天然气工程—油气勘探]