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顺北碳酸盐岩裂缝性气藏安全钻井关键技术

王建云 杨晓波 王鹏 范红康

王建云, 杨晓波, 王鹏, 范红康. 顺北碳酸盐岩裂缝性气藏安全钻井关键技术[J]. 石油钻探技术, 2020, 48(3): 8-15. doi: 10.11911/syztjs.2020003
引用本文: 王建云, 杨晓波, 王鹏, 范红康. 顺北碳酸盐岩裂缝性气藏安全钻井关键技术[J]. 石油钻探技术, 2020, 48(3): 8-15. doi: 10.11911/syztjs.2020003
WANG Jianyun, YANG Xiaobo, WANG Peng, FAN Hongkang. Key Technologies for the Safe Drilling of Fractured Carbonate Gas Reservoirs in the Shunbei Oil and Gas Field[J]. Petroleum Drilling Techniques, 2020, 48(3): 8-15. doi: 10.11911/syztjs.2020003
Citation: WANG Jianyun, YANG Xiaobo, WANG Peng, FAN Hongkang. Key Technologies for the Safe Drilling of Fractured Carbonate Gas Reservoirs in the Shunbei Oil and Gas Field[J]. Petroleum Drilling Techniques, 2020, 48(3): 8-15. doi: 10.11911/syztjs.2020003

顺北碳酸盐岩裂缝性气藏安全钻井关键技术

doi: 10.11911/syztjs.2020003
基金项目: 中国石化科技攻关项目“特深层油气钻井工程关键技术与工具”(编号:P17049-3)和“顺北油气田一区优快钻井技术研究”(编号:P18021-1)部分研究内容
详细信息
    作者简介:

    王建云(1974—),男,湖北浠水人,1997年毕业于西南石油学院石油工程专业,高级工程师,主要从事钻井完井工程技术研究与相关管理工作。E-mail:wjianyun.xbsj@sinopec.com

  • 中图分类号: TE28+3

Key Technologies for the Safe Drilling of Fractured Carbonate Gas Reservoirs in the Shunbei Oil and Gas Field

  • 摘要:

    为了解决顺北油气田碳酸盐岩裂缝性气藏钻井过程中溢流和漏失同存的问题,保证钻井安全,分析了其溢流和漏失同存的原因,制定了首先暂堵裂缝阻止气体侵入井筒、然后在气体侵入井筒的情况下控制气体侵入量和上窜速度以保证钻井安全的技术思路,并将裂缝性气藏暂堵技术、控压钻井技术和高温气滞塞技术进行集成,形成了顺北碳酸盐岩裂缝性气藏安全钻井关键技术。应用该关键技术时,先用裂缝性气藏暂堵技术阻止气体进入井筒;发现气体侵入井底时,用控压钻井技术控制气体侵入量;气体侵入井筒的情况下,用高温气滞塞技术降低气体上窜速度,保障钻井安全。顺北油气田在应用碳酸盐岩裂缝性气藏安全钻井关键技术后,解决了溢流和漏失同存的难题,提高了钻井速度,保证了钻井安全。

     

  • 图 1  裂缝性气藏与常规气藏压力系统对比

    Figure 1.  Pressure system comparison between fractured gas reservoir and conventional gas reservoirs

    图 2  控压起钻时的井口回压控制情况

    Figure 2.  Wellhead pressure control during managed pressure POOH

    图 3  控压起钻时的井底压力控制情况

    Figure 3.  Bottom hole pressure control during managed pressure POOH

    表  1  顺北油气田碳酸盐岩裂缝性气藏与国内其他碳酸盐岩气藏地质条件对比

    Table  1.   Geological condition comparison between fractured carbonate gas reservoir in the Shunbei Oil and Gas Field and the other carbonategas reservoirs in China

    区块埋藏深度/m地层压力/MPa地层温度/℃CO2含量,%H2S含量,%
    顺北6 600~8 30082.0~180.0170.0~238.01.17~9.360.004~0.160
    普光4 356~5 15755.0~61.0120.0~134.08.6415.160
    元坝6 710~7 16066.0~69.0145.0~158.07.50  5.140
    龙岗5 800~6 20052.0~63.0134.0~140.03.38  2.750
    克拉3 500~4 000  74.4104.00.650
    克深6 500~8 000113.0167.00.810
    下载: 导出CSV

    表  2  暂堵堵漏浆封堵性能评价结果

    Table  2.   Evaluation on the plugging performance of temporary plugging slurry

    岩心缝宽/μm正向液驱压力/MPa正向气驱压力/MPa滤失量/mL反向气体突破压力/MPa
    130~50 15>8.00   0.6
    290~15015>7.50.5>3.5  
    3150~25015>8.00.11.0
    4210~35015>8.00.40.8
    5270~45015>7.50.20.6
    下载: 导出CSV

    表  3  低密度小球在不同黏度流体中的上升速度

    Table  3.   Upward velocity of low density pellets in fluids with different viscosity

    测试流体六速旋转黏度计读数表观黏度/(mPa·s)静切力/Pa小球上窜速度/(mm·s−1
    ϕ600/ϕ300/ϕ200/ϕ100/ϕ6/ϕ3 初切力 终切力
    清水2/1/0/0/0/0  1.00 0 37.5
    高黏流体45/30/24/15/4/222.50.5 1.0  3.0
    低浓度高温气滞塞23/23/23/23/22/2211.58.0 12.0 0
     注:低密度小球的密度为0.4 kg/L,直径为1.0 mm;3种测试流体的密度均为1.0 kg/L。
    下载: 导出CSV

    表  4  抗高温提切剂性能评价结果

    Table  4.   Evaluation on the performance of high temperature resistant shear strength-improving agent

    提切剂及加量条件六速旋转黏度计读数 静切力/Pa塑性黏度/(mPa·s)动切力Pa
    ϕ600/ϕ300/ϕ200/ϕ100/ϕ6/ϕ3 初切力 终切力
    1%HE300老化前31/19/14/8/1/0.5 0.25 0.2512 3.5
    老化后4/2/1/0.5/0/0 0 0   20  
    1%HEC老化前52/36/23/13/6/5 2.00 5.001610.0
    老化后5/3/2/1/0/0 0 0   2  0.5
    4%SMRM老化前24/20/19/16/9/8 4.00 6.00  4  8.0
    老化后14/13/13/13/16/16 8.00 13.00   1  6.0
     注:老化条件是在200 ℃下滚动16 h;六速旋转黏度计的读数是在50 ℃下测得的。
    下载: 导出CSV

    表  5  高温气滞塞在50和190 ℃下的流变性

    Table  5.   Rheological properties of high temperature gas-block plug at 50 °C and 190 °C

    温度/℃六速旋转黏度计读数密度/(kg·L−1终切力Pa塑性黏度/(mPa·s)动切力/Pa
    ϕ600/ϕ300/ϕ200/ϕ100/ϕ6/ϕ3
      50144/119/104/76/20/311.05342547
    19050/4846/45/22/1815  223
     注:测试压力为4 MPa。
    下载: 导出CSV

    表  6  顺北油气田碳酸盐岩裂缝性气藏安全钻井模式

    Table  6.   Safe drilling mode of fractured carbonate gas reservoir in the Shunbei Oil and Gas Field

    地层漏失气侵强度
    较强
    一间房组、
    上鹰山组
    旋转控制头旋转控制头
    控压节流管汇
    旋转控制头
    控压节流管汇
    回压泵
    PWD
    下鹰山组旋转控制头旋转控制头
    控压节流管汇
    旋转控制头
    控压节流管汇
    回压泵
    下载: 导出CSV
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  • 收稿日期:  2019-08-19
  • 修回日期:  2020-02-21
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