高性能CaCl<sub>2</sub>/聚合物水基钻井液的室内研究

杨超; 尹泽群; 鲁娇

doi:10.3969/j.issn.1001-5620.2015.03.002

高性能CaCl₂/聚合物水基钻井液的室内研究

doi: 10.3969/j.issn.1001-5620.2015.03.002

中国石化抚顺石油化工研究院, 辽宁抚顺

基金项目: 中国石油化工股份有限公司总合课题(210043)资助。

详细信息

作者简介:
杨超,工程师,2010年毕业于中国地质大学应用化学专业获硕士学位,现在主要从事钻井液技术研究工作。地址:辽宁省抚顺市望花区丹东路东段31号;邮政编码113000;电话(024)56389271;E-mail:yangchao.fshy@sinopec.com。

中图分类号: TE254.3
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出版历程
- 收稿日期: 2015-03-02
- 刊出日期: 2015-05-31

Study on High Performance CaCl₂/Polymer Water Base Drilling Fluid

No. 31 Dangdong Lu Dongduan, Wanghua District, Fushun City, Liaoning 113000, China

摘要

摘要: 在自制新型烯类聚合单体的基础上,合成出一种新型配套的、抗CaCl₂ 至饱和的强抗钙聚合物,初步形成了2 种CaCl₂/聚合物水基钻井液的基本配方:水+1.5%(3.0%)凹凸棒石+0.3%(0.2%)XC+5%KCl+40%(60%)无水CaCl₂+2% 强抗钙聚合物,强抗钙聚合物与CaCl₂ 能形成良好的协同效应,是体系的核心。综合性能评价结果表明,CaCl₂/聚合物钻井液的抑制性能和润滑性能尤为突出,在120℃滚动老化16 h 后,一次、二次回收率均为100%,抑制能力超强;体系的黏附系数为0.001 69,润滑系数最低为0.038,达到油基钻井液水平;强抗钙聚合物对凹凸棒石具有较强的吸附和分散能力,可以形成薄而致密的滤饼,显著提高体系降滤失能力;可以用聚合醇或聚电解质作封堵剂;含60%CaCl₂ 的配方抗温达120℃。可以得出,该体系具有满足复杂地层钻井要求的潜力,与油基钻井液性能相仿,并且成本低,无污染,满足排放标准,维护简单,具有良好的应用前景。
- CaCl₂/聚合物钻井液 /
- 高性能钻井液 /
- 水基钻井液 /
- 复杂地层
Abstract: Two water base drilling fluids were formulated with CaCl₂ and polymers highly resistant to calcium contamination. Compared with other water drilling fluids, the CaCl₂/polymer drilling fluids had better performance;the inhibitive capacity and lubricity of the drilling fluids were greatly improved. After hot rolling 16 hours at 120℃, the first percent recovery and secondary percent recovery of shale samples were both 100%. Friction coefficient of the drilling fluid was as low as 0.038, almost the same as that of oil base drilling fluid. This drilling fluid was cost effective, pollution-free, and easy to use.
- CaCl₂/polymer drilling fluid /
- Water base drilling fluid /
- Troublesome formations /
- High performance

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