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郑X井重复压裂非产水煤层绒囊流体暂堵转向试验

郑力会 崔金榜 聂帅帅 刘斌 付毓伟 李宗源

郑力会, 崔金榜, 聂帅帅, 刘斌, 付毓伟, 李宗源. 郑X井重复压裂非产水煤层绒囊流体暂堵转向试验[J]. 钻井液与完井液, 2016, 33(5): 103-108. doi: 10.3969/j.issn.1001-5620.2016.05.022
引用本文: 郑力会, 崔金榜, 聂帅帅, 刘斌, 付毓伟, 李宗源. 郑X井重复压裂非产水煤层绒囊流体暂堵转向试验[J]. 钻井液与完井液, 2016, 33(5): 103-108. doi: 10.3969/j.issn.1001-5620.2016.05.022
ZHENG Lihui, CUI Jinbang, NIE Shuaishuai, LIU Bin, FU Yuwei, LI Zongyuan. Temporary Plugging Diverting Test with Fuzzy Ball Fluids in Non-Water Producing Coal Beds in Re-fracturing Well Zheng-X[J]. DRILLING FLUID & COMPLETION FLUID, 2016, 33(5): 103-108. doi: 10.3969/j.issn.1001-5620.2016.05.022
Citation: ZHENG Lihui, CUI Jinbang, NIE Shuaishuai, LIU Bin, FU Yuwei, LI Zongyuan. Temporary Plugging Diverting Test with Fuzzy Ball Fluids in Non-Water Producing Coal Beds in Re-fracturing Well Zheng-X[J]. DRILLING FLUID & COMPLETION FLUID, 2016, 33(5): 103-108. doi: 10.3969/j.issn.1001-5620.2016.05.022

郑X井重复压裂非产水煤层绒囊流体暂堵转向试验

doi: 10.3969/j.issn.1001-5620.2016.05.022
基金项目: 国家科技重大专项“煤层气钻完井及增产改造技术示范工程”(2016ZX05064002)。
详细信息
    作者简介:

    郑力会,男,1968年生,博士生导师,楚天学者特聘教授,主要研究防漏堵漏和吸附气储层伤害防治。电话(010)89732207;E-mail:zhenglihui@cup.edu.cn。

  • 中图分类号: TE357.12

Temporary Plugging Diverting Test with Fuzzy Ball Fluids in Non-Water Producing Coal Beds in Re-fracturing Well Zheng-X

  • 摘要:

    郑庄煤层气田郑X井欲实施绒囊暂堵流体重复压裂转向,既形成新裂缝又不影响原缝生产,增加供气体积以达到满意产量。室内先用绒囊流体暂堵直径38 mm煤岩柱塞的中间人工剖缝,后用活性水测试绒囊流体暂堵剖缝承压能力达20 MPa,超过地层18 MPa的破裂压力,满足转向要求;绒囊暂堵流体伤害郑庄煤岩柱塞渗透率恢复值85%,满足原缝继续生产要求;现场利用混砂车和水罐建立循环,通过剪切漏斗配制密度为0.94~0.98 g/cm3、表观黏度为30~34 mPa·s的绒囊暂堵流体。先用活性水顶替检测原缝是否存在后,用排量为3.0~3.5 m3/h注入绒囊暂堵流体60 m3,停泵30 min油压稳定在12 MPa,表明绒囊封堵原缝成功。用活性水压裂液压裂,油管压力上升至18 MPa时出现破裂。微地震监测新缝方位为N13°W,相对于原缝N42°E转向55°。压后间抽2 h产气200 m3,是压裂前产量的2倍以上。采用微地震监测和对比压裂前后产量证明,绒囊可迫使压裂液转向压开新缝,且不伤害原裂缝,适用于煤层气老井重复压裂恢复生产。

     

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  • 收稿日期:  2016-08-01
  • 刊出日期:  2016-09-30

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