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ZYSD高失水固结堵漏技术在顺北5-9井中的应用

方俊伟,  贾晓斌,  刘文堂,  乐明

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文章导航 > 钻井液与完井液  > 2021 >  38(1): 74-78
方俊伟, 贾晓斌, 刘文堂, 乐明. ZYSD高失水固结堵漏技术在顺北5-9井中的应用[J]. 钻井液与完井液, 2021, 38(1): 74-78. doi: 10.3969/j.issn.1001-5620.2021.01.012
引用本文: 方俊伟, 贾晓斌, 刘文堂, 乐明. ZYSD高失水固结堵漏技术在顺北5-9井中的应用[J]. 钻井液与完井液, 2021, 38(1): 74-78. doi: 10.3969/j.issn.1001-5620.2021.01.012
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FANG Junwei, JIA Xiaobin, LIU Wentang, YUE Ming. Control Mud Losses in Well Shunbei-5-9 with ZYSD High Fluid Loss Solidifying Slurry[J]. DRILLING FLUID & COMPLETION FLUID, 2021, 38(1): 74-78. doi: 10.3969/j.issn.1001-5620.2021.01.012
Citation: FANG Junwei, JIA Xiaobin, LIU Wentang, YUE Ming. Control Mud Losses in Well Shunbei-5-9 with ZYSD High Fluid Loss Solidifying Slurry[J]. DRILLING FLUID & COMPLETION FLUID, 2021, 38(1): 74-78. doi: 10.3969/j.issn.1001-5620.2021.01.012
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ZYSD高失水固结堵漏技术在顺北5-9井中的应用

doi: 10.3969/j.issn.1001-5620.2021.01.012

  • 1. 中国石化西北油田分公司石油工程技术研究院, 乌鲁木齐 830011;

  • 2. 中国石化缝洞型油藏提高采收率重点实验室, 乌鲁木齐 830011;

  • 3. 中国石化中原石油工程有限公司钻井工程技术研究院, 河南濮阳 457001

基金项目: 

国家科技重大专项课题“塔里木盆地碳酸盐岩油气田提高采收率关键技术示范工程”（2016ZX05053-014）

详细信息
    作者简介:

    方俊伟,副研究员,硕士,1986年生,毕业于西南石油大学海洋油气工程专业,现在从事钻井完井液及储层保护技术研究。电话(0991)3161152,E-mail:fangjunwei555@126.com

  • 中图分类号: TE254.3

Control Mud Losses in Well Shunbei-5-9 with ZYSD High Fluid Loss Solidifying Slurry

  • 1. Petroleum Engineering Technology Research Institute, Northwest Oilfield Company, Sinopec, Urumqi, Xinjiang 830011;

  • 2. Key Laboratory of Enhanced Recovery for Fracture-cave Oil Reservoir, Sinopec, Urumqi, Xinjiang 830011;

  • 3. Drilling Engineering Technology Research Institute, Zhongyuan Petroleum Engineering Co. Ltd, Sinopec, Puyang, Henan 457001

    摘要
  • 摘要: 顺北5-9井是位于顺托果勒低隆北缘构造重点区域的一口评价井，该井志留系地层承压能力低，诱导性裂缝发育，受激动压力极易开启、扩展致漏，而桥塞堵漏粒径级配困难大，承压能力不足，此外志留系有发育高压盐水层，也增加了堵漏难度。邻井多口井发生严重复杂漏失、井壁失稳卡钻甚至弃井。针对志留系堵漏一次成功率低、地层承压能力低、井漏时效高等问题，采用ZYSD高失水固结堵漏技术，封堵时间小于30 s，承压能力大于18 MPa。现场应用表明，ZYSD高失水固结堵漏7次，堵漏一次成功率100%，井漏处理时间较邻井减少81%；现场试压8.5 MPa，志留系当量密度达到1.51g/cm3，成功解决了顺北5-9井的井漏、出水等复杂问题。

     

    Abstract: The Well Shunbei-5-9 is an appraisal well drilled in the potential area of the low uplift Shuntuoguole north margin. The Silurian system penetrated by this well has low pressure bearing capacity and plenty of induced fractures which are easy to widen and extend when pressure surge is applied, and mud losses are thus occurring. When using bridging lost circulation materials (LCM) to control mud losses, it is difficult to have suitable particle size distribution of the LCMs, and the LCMs deposited on the surface of the wellbore has pressure bearing capacity that is not sufficient to resist mud losses again. Furthermore, there are high pressure saltwater zones developed in the Silurian system, making the mud loss control more difficult. Several wells drilled nearby experienced severe mud losses, borehole wall collapse and even well abandonment. To overcome the difficulties encountered in controlling mud losses in the Silurian system, a ZYSD high fluid loss LCM was used. ZYSD is able to seal off the mud loss channels in 30 s, and the formation plugged with ZYSD has pressure bearing capacity of at least 18 MPa. This technique has been used 7 times in field operation and were all successful. Time spent dealing with mud losses was reduced by 81%. Mud loss zones treated with ZYSD had pressure bearing capacity of 8.5 MPa. Equivalent circulation density of mud when drilled into the Silurian system was 1.51 g/cm3. The application of the ZYSD technique successfully solved mud losses and water kick problems encountered in drilling the Well Shunbei-5-9.

     

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  • 收稿日期:  2020-10-29
  • 网络出版日期:  2021-08-16

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