机械套管接箍定位器的研制及应用

Development and application of mechanical casing-collar iocator

对于一些需精确定位的连续油管作业，如多薄层压裂，连续油管自有的深度计量设备误差太大，通过对3种井下定位方法的对比．得出机械套管接箍定位器法定位准确、研发难度小，且成本低．鉴于此，进行了机械套管接箍定位器结构设计、工作原理研究，并经过室内实验和现场试验论证，性能指标满足现场要求，取得了预期效果。

For some coiled tubing operations that require precise positioning,like fracturing in multiple thin layers,the error from its own depth-measurement device of the coiled tubing is too large.By comparing the three methods of downhole positioning,it is concluded that the positioning of the mechanical casing-collar locator positioning method is accurate,with small R＆D difficulty and low cost.In view of this,the structural design and operational principle research of the mechanical casing-collar locator are carried out.The laboratory and field tests demonstrate that the performance indexes can meet the demands of the demands of the field,and the expected results are achieved.