可溶筛管在塔里木油田高温高压气井中的应用

doi:10.11885/j.issn.1674-5086.2021.10.21.32

摘要/Abstract

摘要： 为解决塔里木油田高温高压气井清洁完井及砂埋井快速修井的问题，研发了一种可酸溶形成生产通道的可溶筛管，可实现充分替液，达到清洁完井的目标。同时，可溶筛管与封隔器下部管柱使用销钉连接，在修井作业中，可实现分段打捞，减少作业量，降低作业周期，降低作业风险，提高修井效率，从而减小修井作业对储层的伤害。对可溶筛管进行了室内评价，该筛管使用的可酸溶材料在温度达110 ℃时，所有厚度试样均全部溶解，物理性能也可以满足抗内压35 MPa，持续稳压15 min的密封设计要求，在650 kN抗拉载荷实验中筛管无变形，满足现场施工要求。在现场应用的井中，产能恢复率平均达211.0%，远高于以往的78.1%，实现了低成本清洁完井及后期安全修井作业，该技术的应用前景良好。

关键词: 高温高压, 可溶筛管, 清洁完井, 销钉连接, 分段打捞

Abstract: In order to solve the problem of clean completion of high temperature and high pressure gas wells and rapid workover of sand buried wells in Tarim Oilfield, a dissolvable screen pipe has been developed that can be acid dissolvable to form a production channel, which can achieve the goal of clean completion by fully replacing the fluid. The dissolvable screen pipe is connected to the lower tubing column of the packer by pins, which can be fished in sections during workover operations, reducing the workload, lowering the workover cycle, reducing the risk and improving the workover efficiency, thus reducing the damage to the reservoir during workover operations. The material dissolved in all thicknesses at a temperature of 110 ℃. The physical properties also met the seal design requirements of 35 MPa internal pressure test and 15 min continuous steady pressure, and no deformation in the 650 kN tensile load test. In the three wells applied in the field, the average recovery rate of 211.0% was much higher than the previous 78.1%, achieving the effect of low-cost clean completion and safe repair operation later, which provides a good reference for the application effect of this technology.

Key words: HTHP, dissolvable screen pipe, clean well completion, pin connection, sectional fishing

中图分类号:

TE257

魏军会, 景宏涛, 谢英, 李建明, 司想. 可溶筛管在塔里木油田高温高压气井中的应用[J]. 西南石油大学学报(自然科学版), 2023, 45(6): 125-134.

WEI Junhui, JING Hongtao, XIE Ying, LI Jianming, SI Xiang. Application of Dissolvable Screen Pipe in HTHP Gas Well in Tarim Oilfield[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2023, 45(6): 125-134.

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http://journal15.magtechjournal.com/Jwk_xnzk/CN/Y2023/V45/I6/125

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