[1]李 涛,钱 政,池崇荣,等.川西地区超深层小井眼短尾管悬挂固井技术[J].复杂油气藏,2023,16(01):118-122.[doi:10.16181/j.cnki.fzyqc.2023.01.020]
 LI Tao,QIAN Zheng,CHI Chongrong,et al.Short liner hanging and cementing technology for the ultra-deep slim holes in western Sichuan[J].Complex Hydrocarbon Reservoirs,2023,16(01):118-122.[doi:10.16181/j.cnki.fzyqc.2023.01.020]
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川西地区超深层小井眼短尾管悬挂固井技术()
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《复杂油气藏》[ISSN:1674-4667/CN:31-2019/TQ]

卷:
16卷
期数:
2023年01期
页码:
118-122
栏目:
油气工程
出版日期:
2023-03-25

文章信息/Info

Title:
Short liner hanging and cementing technology for the ultra-deep slim holes in western Sichuan
作者:
李 涛1钱 政2池崇荣1何 飞1
1. 中国石油西南油气田分公司工程技术研究院,四川 成都 610017;2. 四川华盛能源发展集团有限公司,四川 成都 610051
Author(s):
LI Tao1QIAN Zheng2CHI Chongrong1HE Fei1
1. Engineering Technology Research Institute of PetroChina Southwest Oil and Gas Field Company, Chengdu 610017, China;2. Sichuan Huasheng Energy Development Group Company, Chengdu 610051, China
关键词:
超深井小井眼短尾管悬挂固井防窜水泥浆川西地区
Keywords:
ultra-deep wellslim hole short tail pipe suspended cementing anti-channeling cement slurry western Sichuan
分类号:
TE256
DOI:
10.16181/j.cnki.fzyqc.2023.01.020
文献标志码:
A
摘要:
四川盆地川西北部红星潜伏构造目的层栖霞组埋深超7 000 m,HX1井是区域内第一口风险探井,该井最后一开次采用?139.7 mm钻头从井深7 678 m钻进至完钻井深7 779 m,井底井斜31°、温度160℃,下?114.3 mm尾管悬挂固井,裸眼段长仅101m,尾管重量轻、环空间隙小。固井施工面临超深短尾管倒扣丢手验证困难、水泥浆抗高温性能及顶替计量要求高等技术难题。为此,通过强化固井施工过程控制,应用加长型尾管悬挂器降低超深短尾管倒扣丢手验证难度,优化浆柱结构并采用抗高温水泥浆体系保障固井质量。该井?114.3 mm尾管固井施工顺利,固井质量合格率95%。该技术对超深小井眼短尾管悬挂固井具有借鉴价值。
Abstract:
The buried depth of the Qixia Formation, the target layer of the Hongxing buried structure in the northwest of the Sichuan Basin, exceeds 7 000 m. The well HX1 is the first risky exploratory well in the region. The well was drilled with a ?139.7 mm bit from a depth of 7 678 m to a completed well depth of 7 779 m. The bottom hole deviation was 31° and the temperature was 160 ℃. The well was suspended and cemented with a tailpipe liner of ?114.3 mm, with the length of the open hole section only 101 m, a lightweight tailpipe, and a small annular space gap. Cementing construction is faced with technical problems such as difficulty in verifying the release of ultra-deep short liner backoff, high temperature resistance of cement slurry, and high requirements for displacement measurement. Therefore, through the strengthening control of cementing construction process and the application of lengthened liner hanger, the difficulty of verification of ultra-deep short liner backoff release was overcome. Through the optimization of the slurry column structure and the use of a high temperature resistant cement slurry system, the cementing quality was ensured. The cementing operation of the ?114.3 mm liner in this well was successfully constructed with a 95% pass rate. The technique has some reference value for future short liner suspension and cementing in the ultra-deep slim hole.

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备注/Memo

备注/Memo:
收稿日期:2022-12-14。
第一作者简介:李涛(1993-),工程师,从事钻井完井技术研究与钻井故障及复杂管理工作。E-mail:litao01@petrochina.com.cn。
基金项目:中国石油西南油气田分公司科技项目“万米特深井井身结构及对策性研究”(20220302-07)。
更新日期/Last Update: 2023-06-01