评价页岩水力压裂效果的一种新方法及其应用  

A new method for hydraulic fracturing evaluation and its application in shale reservoirs

作　　者：许丹[1,2] 高玮[1] 胡瑞林[1] 

机构地区：[1]中国科学院地质与地球物理研究所,中科院页岩气与地质工程重点实验室,北京100029 [2]中国科学院大学

出　　处：《石油地质与工程》2016年第4期138-141,150,共4页Petroleum Geology and Engineering

基　　金：中国科学院战略性先导科技(B类)课题“储层非均质性与可压裂性(编号:XDB10030100)”

摘　　要：提出了评价页岩水力压力效果的一种新方法——修正的带宽投影连通率计算方法,对带宽投影法计算连通率的方法进行了修正,根据修正后的带宽投影法的原理编写计算机软件,计算页岩压裂效果面缝网体系各方向的连通率,并做出连通率玫瑰花图,计算玫瑰花图占半圆的比例,将此比例作为指标评价压裂效果面的缝网体系。将这一方法应用到重庆焦石坝采集的龙马溪组页岩的室内水力压裂效果评价上,取得了良好的效果。A new method for hydraulic fracturing evaluation in shale reservoir has been put forward and it is a revised calculation method of connectivity rate which is based on the principle of bandwidth projection.According to the theory of the revised bandwidth projection method,the computer program was implemented.The connectivity rate of fracture network after shale fracturing was calculated and then a rose diagram of connectivity rate was worked out,which could calculate the proportion of roses figure accounting for the semicircle.This method was applied to evaluate the fracture network system of laboratory hydraulic fracture test in shale reservoirs of Malongxi formation,Jiaoshiba area in Chongqing and a good effect was obtained.

关 键 词：焦石坝地区 页岩储层 水力压裂 缝网 节理连通率 玫瑰花图 

分 类 号：TE357.1[石油与天然气工程—油气田开发工程]