摘要
水力压裂是改造低孔渗油气藏的有效增产措施之一,针对常规水平井分段压裂工艺遇到的问题,研究了无限级拖动分段压裂工艺及配套工具,该工艺通过开启固井滑套或喷砂射孔的方式实现井筒与油气层的连通,可一趟管柱实现水平井的多段压裂改造,且不受段数限制,施工后无需钻铣,可进行二次压裂。两口井的成功应用表明,该工艺可满足施工压力不高于66 MPa的压裂水平井,压裂施工后新井初期配产气量达到20000 m3/d以上,达到油藏设计要求,为后续精细化分段压裂提供有效手段。
Hydraulic fracturing is one of the effective stimulation measures for the reconstruction of low porosity and permeability oil and gas reservoirs.Aiming at the problems encountered in the conventional horizontal well staged fracturing technology,the infinite stage drag staged fracturing technology and its supporting tools are studied.This process realizes the connection between the wellbore and the oil and gas reservoir by opening the cementing sliding sleeve or sandblasting perforation.It can realize the multi-stage fracturing reconstruction of the horizontal well in one pipe,which is not limited by the number of sections.After the construction,there is no need for drilling and milling,and secondary fracturing can be performed.The successful application of two wells shows that this technology can meet the requirements of fracturing horizontal wells with a construction pressure of no more than 66 MPa.After fracturing construction,the initial gas production of the new well reaches over 20000 m3/d,which meets the requirements of reservoir design and provides an effective means for subsequent fine staged fracturing.
作者
刘鹏
左凯
罗建伟
刘传刚
魏爱拴
严孟凯
LIU Peng;ZUO Kai;LUO Jianwei;LIU Chuan'gang;WEI Aishuan;YAN Mengkai(CNOOC EnerTech-Drilling&Production Co.,Tianjin 300452,China)
出处
《海洋石油》
CAS
2024年第2期35-39,共5页
Offshore Oil
基金
中海油能源发展级科研基金项目“增储上产关键技术/产品研究重大专项”(HFKJ-ZX-GJ-2023-02)。
关键词
无限级
分段压裂
固井滑套
喷砂射孔
infinite stage
staged fracturing
cementing sliding sleeve
sandblasting perforation
