油气井复合压裂新技术  

NEW COMPOSITE FRACTURING TECHNIQUE IN OIL/GAS WELL

作　　者：林涛[1] 

机构地区：[1]中原油田井下特种作业处

出　　处：《钻采工艺》2004年第3期26-28,共3页Drilling & Production Technology

摘　　要：针对中原油田低孔低渗、高温高压、多层系的复杂断块油气藏近些年压裂效果欠佳 ,部分储量动用程度较低的情况 ,进行了复合压裂新工艺的试验。该工艺采用压前预处理、变粘度压裂液 ,变粒径支撑剂组合和高砂比、高排量、快返排等一系列新技术 ,在中原油田桥口、马厂、白庙等油气田进行了试验 ,压裂 2 5口井 ,有效率达10 0 % ,平均单井日增油 8.1t、日增气 2 .16× 10 4m3 ,使一些难动用、难开采的区块或井得到了有效利用。In recent years,because common postfracture response is poor in complex fault block reservoir with low-porosity and low-permeability,high temperature and high pressure,we carry out the testing of new composit fracturing technology.This technology adopts a series of new technique,includig prefracture treatment,varible viscosity fracturing fluid and varible diameter proppant,high sand concentration and injection rate,rapidly discharge fracturing fluid.It was successfully used in 25 wells of Qiakou,Machang and Baimiao gas reservoir,average increase oil 8.1 t/d and gas 2.16×104 m3/d in a well.By this technique,the reserves could be effectively produced in worse formations or blocks.

关 键 词：复合压裂技术 压裂液 变粒径支撑剂 断块油气藏 压裂效果 储量 水力压裂 

分 类 号：TE35712[石油与天然气工程—油气田开发工程]