可捞式桥塞分层压裂工艺试验

SEPARATE LAYER FRACTURING TECHN- OLOGY TESTING WITH RETRIEVABLE BRIDGE PLUG

长庆气田属低渗气田 ,上古气藏含有不同层系 ,需进行分层压裂改造才能投产。通过引进贝克休斯公司的可捞式桥塞工具 ,对长庆苏里格气田苏 7井、苏 16井分层压裂改造试验进行分析 ,认为该工具具有施工操作简单、可靠性高、作业时间短、施工作业对气层伤害小等优点。该工艺试验成果为国内分层改造的可靠性和有效性提供了一条技术思路。

Changqing natural gas field belongs to low-permeability gas field.Gas reservoirs of upper palaeozoic erathem contains different gas layers,it can be produced by separate layer fracturing.This paper assays and evaluates the separate layer fracturing testing of well Su 7 and well Su 16 in Changqing Sulige matural gas field that firstly used retrievable bridge plug which is introduced from BAKER HUGHES company.Testing result shows that the tool has many advantages,such as:simple operation,high reliability,short operating time,small gas layer damage and so on.Meanwhile,the technology testing outcome offers one technology way for reliability and effectiveness of separate layer fracturing in China.