海上高效侧钻小井眼水平井钻完井技术研究及应用

Research and Application of Offshore Drilling and Completion Technology of Efficient Sidetracking Slim-hole Horizontal Well

摘要:

通过对常规侧钻小井眼方案的分析对比，结合钻机作业能力提出了高效侧钻小井眼水平井钻完井技术，包括小井眼水平井钻进、防砂方式优选、油水层的封隔等技术。通过在QHD32-6F平台4口调整井的钻完井实施证明，该技术能有效降低小尺寸套管侧钻井作业难度，大大降低了钻完井的综合成本，为海上钻完井提速增效发挥了重要作用。该技术具有很好的应用前景。

Abstract:

By comparing and analyzing the conventional project of sidetracking slim-hole horizontal well and considering the rig ability, this paper puts forward an offshore drilling and completion technology of efficient sidetracking slim-hole horizontal well, including the slim-hole horizontal well drilling, sand control methods optimization and oil-water layer packer. By the application of drilling and completion in 4 adjustment wells in QHD32-6F platform, it shows that with this technology, the operation difficulty can be effectively reduced for small size casing sidetracking and the comprehensive cost of drilling and completion can be greatly reduced. The broad application prospect of this technology is presented.