XAN-YZ页岩稳定剂实验研究

杨振杰; 武星星; 王晓军; 许波; 臧少刚; 吴梦婕

doi:10.3969/j.issn.1001-5620.2015.04.004

XAN-YZ页岩稳定剂实验研究

doi: 10.3969/j.issn.1001-5620.2015.04.004

1.
西安石油大学石油工程学院,西安
2. 克拉玛依市创拓有限责任公司,新疆克拉玛依
3. 上海英华检测科技有限公司,上海

详细信息

作者简介:
杨振杰,教授级高级工程师,1982年毕业于西南石油学院钻井工程专业。现在西安石油大学石油工程学院从事科研教学工作,2002年获西南石油学院油气开发工程工学博士学位。地址:陕西省西安市电子二路东段18号;邮政编码710065;电话(029)88383013/13572470106;E-mail:13572470106@163.com。

通讯作者:
武星星,E-mail:wbsdaxingxing@qq.com。

中图分类号: TE254.4
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出版历程
- 收稿日期: 2015-03-31
- 刊出日期: 2015-07-31

Study on the Shale Stabilizer XAN-YZ

No. 18 DianziEr Lu Dongduan, Xi’an, Shaanxi 710065, China

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Corresponding author: 武星星,E-mail:wbsdaxingxing@qq.com。

摘要

摘要: 为提高页岩气钻井的井壁稳定性和承压强度,开发了页岩气水基钻井液体系,研究了XAN-YZ 页岩稳定剂对不同钻井液体系流变性能、抑制性能和封堵性能的影响规律,同时开展了XAN-YZ 页岩稳定剂对页岩微裂缝/层理愈合修复性能和作用机理的探索实验。实验结果表明,XAN-YZ 页岩稳定剂加入聚磺钻井液体系后,能够改善钻井液的剪切稀释性能,对钻井液的滤失性能影响不大;在聚磺钻井液体系中加入2%XAN-YZ 页岩稳定剂后,页岩膨胀率下降40%,滚动回收率提高16%,封堵承压强度由2 MPa 提高到5 MPa 以上。XAN-YZ 页岩稳定剂通过化学反应在页岩微裂缝和层理中生成水化产物,形成致密的防水屏蔽层,迅速愈合修复页岩的微裂缝和孔隙,使滤液在页岩中的穿透压力由2 MPa 提高到15 MPa 以上。XAN-YZ 页岩稳定剂在聚磺钻井液体系中的最佳加量是2%。XAN-YZ 页岩稳定剂及其作用机理的研究为页岩气水基钻井液体系的研究提供了一个新的技术思路和手段。
- 页岩气钻井 /
- 水基钻井液 /
- 井壁稳定 /
- 抑制性能 /
- 页岩稳定剂
Abstract: A water base drilling fluid for use in shale gas drilling was developed, and the effect of XAN-YZ, a shale stabilizer, on the rheology, inhibitive capacity and sealing performance of this drilling fluid was studied. When treated with 2% XAN-YZ, polymer sulfonate drilling fluid has improved shear thinning performance, reduced rate of swelling of shales by 40%, and increased percent recovery of shale cuttings in hot rolling test by 16%. Pressure bearing capacity of the formation drilled with this drilling fluid is increased from 2 MPa to 5 MPa. XAN-YZ generates dense mud cakes on the borehole wall, thus instantly heals and seals the fractures, beddings and pores found in shale formations, and increases the pressures for filtrates to penetrate the shale formation from 2 MPa to 15 MPa. Laboratory study shows that the optimum treatment of XAN-YZ in polymer sulfonate drilling fluid is 2%. This study provides a new technical clue and means for shale gas drilling with water base drilling fluids.
- Shale gas drilling /
- Water base drilling fluid /
- Borehole stabilization /
- Inhibitive capacity /
- Shale stabilizer

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