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基于三维温度场的热采井水泥环完整性破坏的研究及对策

李进,  龚宁,  张启龙,  徐刚,  陈彬,  林家昱

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文章导航 > 钻井液与完井液  > 2018 >  35(5): 83-89
李进, 龚宁, 张启龙, 徐刚, 陈彬, 林家昱. 基于三维温度场的热采井水泥环完整性破坏的研究及对策[J]. 钻井液与完井液, 2018, 35(5): 83-89. doi: 10.3969/j.issn.1001-5620.2018.05.016
引用本文: 李进, 龚宁, 张启龙, 徐刚, 陈彬, 林家昱. 基于三维温度场的热采井水泥环完整性破坏的研究及对策[J]. 钻井液与完井液, 2018, 35(5): 83-89. doi: 10.3969/j.issn.1001-5620.2018.05.016
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LI Jin, GONG Ning, ZHANG Qilong, XU Gang, CHEN Bin, LIN Jiayu. Study on and Countermeasures to the Loss of Cement Sheath Integrity in Thermal Production Wells Based on 3-D Temperature Field[J]. DRILLING FLUID & COMPLETION FLUID, 2018, 35(5): 83-89. doi: 10.3969/j.issn.1001-5620.2018.05.016
Citation: LI Jin, GONG Ning, ZHANG Qilong, XU Gang, CHEN Bin, LIN Jiayu. Study on and Countermeasures to the Loss of Cement Sheath Integrity in Thermal Production Wells Based on 3-D Temperature Field[J]. DRILLING FLUID & COMPLETION FLUID, 2018, 35(5): 83-89. doi: 10.3969/j.issn.1001-5620.2018.05.016
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基于三维温度场的热采井水泥环完整性破坏的研究及对策

doi: 10.3969/j.issn.1001-5620.2018.05.016

  • 中海石油(中国)有限公司天津分公司·海洋石油高效开发国家重点实验室, 天津 300459

基金项目: 

“十三五”国家重大科技专项“渤海油田高效开发示范工程”（2016ZX05058）。

详细信息
    作者简介:

    李进,工程师,硕士,1988年生,主要从事油气井固井技术及完井射孔、防砂技术研究。电话(022)66503202;E-mail:lijin35@cnooc.com.cn。

  • 中图分类号: TE256.9

Study on and Countermeasures to the Loss of Cement Sheath Integrity in Thermal Production Wells Based on 3-D Temperature Field

  • Bohai Oilfeld Research Institute, Tianjin Branch of CNOOC Ltd., Tianjin 300459

    摘要
  • 摘要: 稠油热采井固井问题一直是制约稠油资源开发的关键技术难题之一，注蒸汽高温热载荷作用下的水泥环完整性破坏导致的井口抬升现象普遍存在于海上稠油热采井开发过程中，危害极大，严重影响油井生产寿命和井控风险。以渤海热采井固井水泥环完整性为研究背景，基于热传导分析，建立了热采井注热井筒三维温度场分析模型和热载荷、注氮载荷和非均匀地应力耦合条件下的水泥环完整性分析模型，并从水泥浆体系、工艺技术、隔热油管性能等方面提出了增强热采井水泥环完整性的应对措施。应用表明，该套理论可有效模拟热采井注蒸汽三维温度场剖面，判断热载荷条件下的水泥环完整性破坏机理及失效形式，为新开发热采井提供借鉴与参考，应用前景广阔。

     

    Abstract: In thermal production heavy oil well cementing operations, loss of cement sheath integrity caused by high heat load produced during steam injection results in wellhead uplift. This phenomenon, which is widely found in the development of offshore thermal production heavy oil wells, and is of great harm, imposes great impact on the production life of the well and results in well control risks. Research work has been conducted on the cement sheath integrity of the thermal production wells in Bohai oilfeld. Based on heat transfer analyses, a 3D temperature feld analysis model for heat injection wellbore and a model for the cement sheath integrity analysis under the condition of coupling of heat load, load of nitrogen injection and non-uniform in-situ stresses have been developed. Measures for enhancing the integrity of cement sheath in thermal production well have been presented from drilling fluid, feld operation techniques and the performance of the thermal insulated tubing etc. Application of the models and the measures showed that the 3D temperature feld profle of a thermal production steam injection well can be effectively simulated, the damage mechanisms of the integrity of the cement sheath and the failure type of the cement sheath under heat load can be determined. This study is of reference to the development of new thermal production wells, and has wide application prospects.

     

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  • 收稿日期:  2018-07-05
  • 刊出日期:  2018-09-30

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