ST102井HP-RTTS封隔器打捞工艺技术分析  

Technical Analysis on Fishing Technology of HP-RTTS Packer in Well ST102

作　　者：陈琪 易斌 刘欣 莫倩雯 王涵宇 唐锐峰 陆林峰 CHEN Qi;YI Bin;LIU Xin;MO Qianwen;WANG Hanyu;TANG Ruifeng;LU Linfeng(Exploration Division of PetroChina Southwest Oil and Gasfield Company,Chengdu,Sichuan 610000,China;PetroChina Yumen Oilfield Branch,Jiuquan,Gansu 735200,China;Engineering Technology Research Institute of Petro China Southwest Oil and Gasfield Company,Guanghan,Sichuan 618300,China)

机构地区：[1]中石油西南油气田公司勘探事业部 [2]中国石油天然气股份有限公司玉门油田分公司 [3]中石油西南油气田公司工程技术研究院

出　　处：《钻采工艺》2022年第5期164-168,共5页Drilling & Production Technology

基　　金：中石油西南油气田分公司科技专项“蓬莱气区复杂深井试油技术研究”(编号:20220302-08)。

摘　　要：HP-RTTS封隔器广泛应用于川西北地区试油作业中,随着地层的复杂程度增加,试油难度也急剧增大,导致试油封隔器遇卡事故时有发生。文章以ST102井为例,该井在压井起测试管柱过程中出现测试管柱遇卡情况,将井下HP-RTTS封隔器成功捞出后,首先分析了井下测试管柱遇卡原因,并对该封隔器的打捞难点进行了深入探讨,提出了先采用正扣钻具对扣打捞,再使用反扣钻具套铣打捞的方法,打捞期间优选打捞工具以及施工参数,逐步排除井下遇卡点,效果明显。最终成功将封隔器捞出,并验证了复杂原因为测试管柱底部被钻井液沉淀沉埋,为以后类似的打捞作业积累了经验。HP-RTTS packer is widely used in oil testing operation in Northwest Sichuan.With the increase of formation complexity,the difficulty of oil testing is also increasing rapidly,which leads to the occurrence of packer jamming accidents.In this paper,Well ST102 is taken as an example.In this well,the test string was stuck during the process of killing and lifting the test string.After successfully fishing out the downhole HP-RTTS packer,the cause of downhole test string sticking is analyzed firstly,and the difficulties in fishing the packer are deeply discussed.Finally,it is put forward that the fishing method of straight thread drilling tool should be used first,and then the reverse thread drilling tool should be used for casing milling and fishing.During fishing,the fishing tools and operation parameters were optimized,and the downhole stuck points were gradually eliminated.The operation effect was obvious.The packer was successfully fished out finally,and the complex reason was verified to be that the bottom of the test pipe string was buried by drilling fluid sedimentation,which accumulated experience for similar fishing operations in the future.

关 键 词：试油 封隔器 套铣 打捞 水力锚 

分 类 号：TE931.2[石油与天然气工程—石油机械设备]