沉砂封隔器套铣、磨铣、切割三种处理打捞方式对比分析

套铣打捞、磨铣打捞、切割打捞是处理打捞沉砂封隔器常用的三种方式,这三种处理打捞方式各有优缺点。为对比这三种处理打捞方式的打捞效率,选择了渤海油田某平台三口井况相近井作为对比井,对比井要处理打捞的封隔器类型、封隔器深度、井身结构、井眼轨迹等类似,其沉砂封隔器打捞分别采用了套铣打捞、磨铣打捞、切割打捞三种打捞方式。通过对比分析发现,套铣打捞在处理打捞9-5/8"BWD沉砂封隔器时效率最高。

Comparative Analysis on Fish Sump Packers in Three Ways of Washover,Milling and Cutting

Washover, milling and cutting are three common methods used to fish sump packers. Each of these fishing methods has its advantages and disadvantages. In order to compare the fishing efficiency of these three fishing methods, three wells with similar conditions in a platform of Bohai Oilfield were selected as comparative wells. The types of packers, packer depth, well structure, well deviation, and etc. should be similar and the three fishing methods were used to fish sump packers in the comparative wells. Through comparison, it is found that washover is the most efficient method in fishing the 9-5/8" BWD sump packers.