摘要
目前,在油田开发中存在一定数量的大段连续射孔、固井质量差、易套变的水平井,无法采用常规机械分段压裂工艺,存在卡管柱风险.水平井液体胶塞分段压裂技术是采用封堵顶段压裂底段,或封堵底段压裂顶段2种工艺管柱,通过注入液体胶塞剂至所需封堵层位,成胶后进行压裂.液体胶塞抗温60～100℃,承压40～50 MPa,无需填砂,成胶时间30～90 min内可调,破胶时间5～72 h可控.压裂封隔器耐压70 MPa,耐温90℃.该工艺在大庆油田现场试验5口井,工艺成功率100％,取得较好的压裂效果,具有很好的应用前景.
the bottom section of fracturing and sealing the top section of the end of paragraph. Through the injection of liquid rubber plug to the desired sealing layer,fracturing after gel forms. Liquid rubber plug temperature resistant ranges 60-100 ℃, pressure 40-50 MPa,without sand filling. Gelling takes 30- 90 min and it is adjustable. And the fracturing packer pressure is 70 MPa,and temperature resistance is 90 ℃. The technology in Daqing Oilfield field was tested in five wells,with 100% process success,to achieve better fracturing effect,with good prospects.
出处
《石油矿场机械》
2013年第12期81-83,共3页
Oil Field Equipment
基金
中国石油天然气股份有限公司科研项目"水平井低渗透改造重大攻关项目"(06ZX001)
关键词
水平井
液体胶塞
分段压裂
控制
horizontal well liquid rubber plug
separate layer fracturing control
