万米超深井可释放马笼头的研制与应用

Development and Application of Releasable Cable Head in 10000 m Ultra Deep Well

万米超深层油气勘探开发是今后油田公司寻找大油气田、开拓油气增储上产的重点战略方向,针对超深井电缆测井存在的高温高压、井况复杂以及电缆弱点设置难题,通过对马笼头机械结构、电控释放装置进行研究,并配套电路保温瓶,形成了260℃/210MPa的万米超深井可释放马笼头。为验证其性能,依次进行了马笼头上、下接头组件外壳体机械受力分析、释放电路耐温测试、电控释放装置地面释放试验、马笼头整体高温高压釜在线释放试验,并进行了多次现场应用。结果表明,该马笼头耐温耐压性能较好,电控释放装置稳定可靠,具备推广应用价值。

The exploration and development of ten thousand meter ultra deep oil and gas is a key strategic direction for oilfield companies to search for large oil and gas fields,develop oil and gas storage and increase production in the future.In response to the problems of high temperature and high pressure,complex well conditions,and weak cable settings in ultra deep well cable logging,the mechanical structure and electrical control release device of the cable head are studied,and a circuit insulation bottle is matched to form a 260℃/210 MPa releasing cable head for ten thousand meter ultra deep wells.To verify its performance,mechanical force analysis of the outer shell of the upper and lower joint components of the cable head,temperature resistance test of the release circuit,ground release test of the electronic control release device,and online release test of the overall high temperature and high pressure kettle of the cable head are carried out in sequence,and multiple onsite applications are carried out.The results show that the cable head has good temperature and pressure resistance performance,and the electric control release device is stable and reliable,which has the value of promotion and application.