高温冻胶阀的研制与现场试验

王在明, 朱宽亮, 冯京海, 吴艳, 沈园园

王在明, 朱宽亮, 冯京海, 吴艳, 沈园园. 高温冻胶阀的研制与现场试验[J]. 石油钻探技术, 2015, 43(4): 78-82. DOI: 10.11911/syztjs.201504014
引用本文: 王在明, 朱宽亮, 冯京海, 吴艳, 沈园园. 高温冻胶阀的研制与现场试验[J]. 石油钻探技术, 2015, 43(4): 78-82. DOI: 10.11911/syztjs.201504014
Wang Zaiming, Zhu Kuanliang, Feng Jinghai, Wu Yan, Shen Yuanyuan. Development and Field Test of High-Temperature Gel Valve[J]. Petroleum Drilling Techniques, 2015, 43(4): 78-82. DOI: 10.11911/syztjs.201504014
Citation: Wang Zaiming, Zhu Kuanliang, Feng Jinghai, Wu Yan, Shen Yuanyuan. Development and Field Test of High-Temperature Gel Valve[J]. Petroleum Drilling Techniques, 2015, 43(4): 78-82. DOI: 10.11911/syztjs.201504014

高温冻胶阀的研制与现场试验

基金项目: 

国家科技重大专项"渤海湾盆地黄骅坳陷滩海开发技术示范工程"(编号:2011ZX05050)资助。

详细信息
    作者简介:

    王在明(1968—),男,江苏高邮人,1991年毕业于石油大学(华东)钻井工程专业,2008年获中国石油大学(华东)油气井工程博士学位,高级工程师,长期从事油气钻井技术研究。

  • 中图分类号: TE28+3

Development and Field Test of High-Temperature Gel Valve

  • 摘要: 南堡油田潜山裂缝性油气藏水平井目的层温度在150℃以上,钻井过程中存在漏喷同存等问题,完井作业难度大,为此,设计应用了二次交联高温冻胶阀。该冻胶阀设计采用二次成胶方式,第一次交联形成适当结构冻胶,满足泵注要求;第二次交联速度快成胶强度大,完成封隔井筒,保证冻胶阀上部井段顺利施工。RM2100高温高压冻胶检测仪在线检测结果表明,冻胶阀形成过程中冻胶黏度体系一直保持在1 000 mPa·s以上,150 min时二次成胶开始,最终黏度12 000 mPa·s以上。室内模拟试验结果发现,该冻胶阀承压能力在2 MPa/100m以上,150℃高温下72 h冻胶黏度基本稳定,可用钻头切割冲蚀方式完成破胶。在 NP23-P2016 井的试验表明,该冻胶阀成功封隔了井筒,减少了漏失,为回接尾管等完井作业提供了安全的井控环境。研究结果表明,高温冻胶阀技术可有效解决南堡油田潜山油气藏水平井完井作业井控难题。
    Abstract: There are well completion challenges in Nanpu buried-hill fracture reservoirs due to the coexistence of the risk of loss of circulation and blow out combined with formation temperatures over 150℃. To solve the problems, the formula for twice-crosslinking gel valves were developed. In the design, a structural gel was developed to meet operational demands.In the first crosslinking step the gel possesses high strength and quick formation speed.In the second crosslinking step involved insuring proper operations in the isolated borehole section. RM2100 HTHP online gel detector was used to monitor the formation of gel valves. Results showed that viscosity of the gel system could be maintained over 1 000 mPa·s. In the secondary crosslinking step,gel formation started at 150 min with ultimate viscosity above 12,000 mPa·s. Simulated boreholes were used to determine pressurebearing/load capacitywhich could reach over 2 MPa/100m.In addtion, the gel at 150℃ maintained a satisfactory viscosity for 72 h. Gel-breaking could be done through flushing by using drill bits. Successful application in Well NP23-P2016 indicated effective isolation of hydrocarbons to minimize losses and to provide reliable well-control conditions for deployment of tie-back tailpipes. Research results showed that the high-temperature gel valves could provide satisfactory solutions to challenges in well control encountered during well completion in Nanpu buried-hill reservoirs.
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出版历程
  • 收稿日期:  2014-09-16
  • 修回日期:  2015-04-06
  • 刊出日期:  1899-12-31

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