海上水平井找漏堵漏工艺研究

对于海上水平故障井而言,找漏堵漏施工操作比常规直井更加困难。针对海上水平井井身结构的特点,对比分析了目前国内外适合于水平井找漏和堵漏相关工具及其工艺技术;针对海上水平井开发工艺和平台空间情况,给出了适合海上水平井找漏堵漏技术的工艺原理、施工步骤、管柱设计结构。可为海上水平井找漏堵漏设计和施工提供科学依据,对实现海上水平井稳产及长远开发具有重要意义。

Study of Leakage Detection and Bridging Technology in Offshore Horizontal Wells

For the purposes of offshore broken horizontal wells,leakage detection and bridging work is more difficult than conventional vertical wells. Based on the distinguishing feature of easing structures inhorizontal wells,related string and technology of leakage detection and bridging issummed up by comparative analysis both home and abroad. The results show t：hat the mechanical method and logging method is the main method to leakage detection and bridging in offshore hori- zontal wells. Introduced are the principles , operation procedures and detailed design of strings, based on the development technique and platform situation of the horizontal wells. The results can provide a scientific basis for the design and operation of leakage detection and bridging for the off- shore horizontal wells,and also an achievement of stable and long-term development of offshore horizontal wells.