LIANG Wenlong, XUE Zhanfeng, MA Lanrong. Key Technologies for a Detachable Bi-Directional Anchoring Suspension Packer[J]. Petroleum Drilling Techniques, 2019, 47(4): 59-63. DOI: 10.11911/syztjs.2019017
Citation: LIANG Wenlong, XUE Zhanfeng, MA Lanrong. Key Technologies for a Detachable Bi-Directional Anchoring Suspension Packer[J]. Petroleum Drilling Techniques, 2019, 47(4): 59-63. DOI: 10.11911/syztjs.2019017

Key Technologies for a Detachable Bi-Directional Anchoring Suspension Packer

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  • Received Date: July 09, 2018
  • Revised Date: March 07, 2019
  • Available Online: March 20, 2019
  • Due to the fact that the conventional bi-directional anchoring packer has problems, which include pre-setting/suspending, sealing failure, and failed detachment after packer setting, the detachable bi-directional anchoring suspension packer that has multi-functionality, including heavy-load anchoring, high-pressure sealing, prevention of pre-setting and detachment was developed. The technical research was conducted on high load-bearing technology. In addition, they studied high pressure sealing technology, and the prevention of pre-setting and detachment. A finite element method was used to analyze the stress and strain after the integrated slip is opened. The results of the surface performance evaluation showed that the performance parameters of each module could meet design requirements. The field application of this packer has been conducted in 20 wells, and the suspension and setting were all successful, which solves the hidden dangers of conventional bi-directional anchoring packers. The successful development of detachable bi-directional anchoring suspension packer provides a reliable anchoring and sealing tool for the smooth implementation of various completion technologies.

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