无缆注水工具研究及实验

Cableless Water Injection Tool Research and Experiment

目前海上油田大多数采用钢丝/电缆投捞注水工艺,然而存着选井限制、作业量大、费用高等一系列问题。为提高海上油田注水调配效率,减少测调过程中设备的占井时间,研制了智能注水工具。该工具主要结构包括水嘴流量调节短节、压力测试短节、验封短节、电路控制系统等。基于压力波技术遥控井下动作,实现精准配注以及井底与地面之间的关键参数的双向传输。通过模拟井下对注水工具进行耐压和整体测试实验,验证了工具的可靠性以及实用性,为后期无缆智能分注奠定基础。

At present,most of the offshore oilfields use the steel wire/cable fishing and water injection process.However,there are a series of problems such as well selection,large operation volume and high cost.In order to improve the efficiency of water injection and deployment in offshore oilfields and reduce the occupation time of equipment during the process of measuring and adjusting,a smart water injection tool was developed.The main structure of the tool includes the nozzle flow adjustment short section,the pressure test short section,the inspection seal short section,and the circuit control system.Remote control of downhole motion based on pressure wave technology for precise dispensing and bidirectional transmission of critical parameters between the bottom of the well and the ground.By simulating the pressure resistance and overall test experiments of the water injection tool in the downhole,the reliability and practicability of the tool were verified,which laid the foundation for the later intelligent cable-free dispensing.