四川地区复杂井况测井施工对策

COUNTERMEASURES FOR WELL LOGGING CONSTRUCTION UNDER COMPLEX WELL CONDITIONS IN SICHUAN AREA

近年来随着四川地区勘探开发的深入,钻井提速、水平井、大斜度井、小井眼、气体钻井等工艺的采用使井眼情况日益复杂,给测井施工带来很大的难度。重点讨论了复杂井筒条件下的测井工艺,针对井筒的不同特点,分析了下井仪在井筒内的受力状况,在测井工具的选用和测井施工工艺方面做了一些尝试,力求尽可能取全测井资料,在实际测井施工中取得了一定的效果。但由于测井受电缆输送的限制,对下井仪的控制相当有限,复杂井筒条件下测井施工仍存在很多的问题有待解决。

In recent years,with the development of exploration and exploitation of Sichuan area,the boreholes are becoming increasingly complex because of the adoption of processes including increased drilling speed,horizontal well,highly-deviated well,slim hole and gas drilling.This brings difficulty to logging operation.This paper focuses on different characteristics of logging processes under complex well bore.It analyzes the force condition of down hole tools in the well bore.The paper makes some attempts in the choice of logging tools and logging operation technology.It tries to collect as much logging data as possible.These help to achieve some good effects in actual logging operation.But due to the limitation of cable transferring,there's limited control over down hole tools.Hence,there are still many problems about logging operation under complex well conditions to be solved.