一种环保型钻井液絮凝剂的研制与评价

赵俊; 孙泽宁; 王景; 亓银波; 祁健; 蒋官澄

doi:10.3969/j.issn.1001-5620.2020.04.004

一种环保型钻井液絮凝剂的研制与评价

doi: 10.3969/j.issn.1001-5620.2020.04.004

1. 中联煤层气有限责任公司晋西分公司, 北京 100016;
2. 中海油能源发展股份有限公司工程技术公司, 天津 300452;
3. 中国石油大学(北京)石油工程学院, 北京 102249

基金项目:

中海油十三五重点项目“鄂尔多斯盆地东缘致密气开发钻完井关键技术研究与应用”（ZSWSAKYXM2019-76）；国家自然科学创新研究群体“复杂油气井钻井与完井基础研究”（51521063）

详细信息

作者简介:
赵俊,工程师,1986年生,现在从事非常规油气钻完井工程技术研究工作。E-mail:zhaojun29@cnooc.com.cn

中图分类号: TE254
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出版历程
- 收稿日期: 2020-04-11
- 刊出日期: 2020-08-28

The Development and Evaluation of an Environmentally Friendly Drilling Flocculant

1. Jinxi Branch, China United Coalbed Methane Corporation Ltd., Beijing 100016;
2. Drilling&Production Company, CNOOC Energy Technology&Services Limited, Tianjin 300452;
3. College of Petroleum Engineering, China University of Petroleum, Beijing 102249

摘要

摘要: 固相含量对钻井液的性能影响很大，往往需要使用化学絮凝方法并结合固控设备来维持适宜的固相含量。为有效去除钻井液中的固相颗粒，研制出了一种高效环保的钻井液絮凝剂——阳离子明胶。并对其絮凝效果和作用机理进行了分析评价。评价过程及结果如下：①通过核磁氢谱和电位测量对合成的产物进行了化学表征；②通过浊度实验、粒度分析、电位测量等方法评价了该絮凝剂的絮凝效果，并对其絮凝机理进行了分析。结果表明：阳离子明胶对高岭土絮凝效果显著，在20 mg/L时可使高岭土分散液的剩余浊度百分率下降至4.0%，可有效包裹、桥联黏土颗粒，使高岭土粒径显著增大。同时，该絮凝剂也可使钻井液中固相颗粒显著增大，结合固控设备可使钻井液固相含量由22.5%降至12.6%，其絮凝效果优于常用的水解聚丙烯酰胺类絮凝剂。
- 钻井液 /
- 絮凝剂 /
- 阳离子明胶 /
- 固相颗粒 /
- 吸附桥联
Abstract: Solids in a drilling fluid greatly affect its properties and are generally kept to an appropriate level by chemical flocculation and solids control equipment, A high performance environmentally friendly drilling flocculant, which is a cationic gelatin, has recently been developed for solids removal from drilling fluids. In laboratory experiment, HNMR and electric potential measurement were used to chemically characterize the gelatin samples synthesized; turbidity experiment, particle size analyzation and electric potential measurement were used to evaluate and analyze the working mechanisms of the final product of the cationic gelatin. It was found that the cationic gelatin has good flocculation effect on kaolinite particles; 20 mg/L of cationic gelatin in a kaolinite suspension decreased its percent residual turbidity to 4.0%. The cationic gelatin is able to effectively encapsulate and bridge clay particles, remarkably increasing the sizes of kaolinite particles. The cationic gelatin is also able to remarkably increase the sizes of solid particles in a drilling fluid, and can reduce the solids content of the drilling fluid from 22.5% to 12.6% when used in conjunction with solids control equipment. The flocculating performance of the cationic gelatin developed is better than the commonly used flocculants such as hydrolyzed polyacrylamide.
- Drilling fluid /
- Flocculant /
- Cationi gelatin /
- Solid particle /
- Bridge through adsorption

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参考文献(7)

[1]	鄢捷年. 钻井液工艺学[M]. 北京:中国石油大学出版社, 2006:314-339. YAN Jienian. Drilling fluid technology[M]. Beijing:China University of Petroleum Press, 2006:314 -339.
[2]	白超峰, 黄凯文, 张崇, 等. 低渗储层PRD钻井液微细固相的絮凝性能优化[J]. 钻井液与完井液, 2015, 32(1):46-48. BAI Chaofeng, HUANG Kaiwen, ZHANG Chong, et al. Optimization of flocculation performance of PRD drilling fluid for fine solids[J]. Drilling Fluid & Completion Fluid, 2015, 32(1):46-48.
[3]	陈鑫, 杨晓冰. 钻井液固相控制技术探讨与建议[J]. 石油和化工设备, 2011, 14(11):45-47. CHEN Xin, YANG Xiaobing. Discussion and suggestion on solid control technology of drilling fluid[J]. PetroChemical Equipment, 2011, 14(11):45-47.
[4]	程玉生, 张立权, 莫天明, 等. 北部湾水基钻井液固相控制与重复利用技术[J]. 钻井液与完井液, 2016, 33(2):60-63. CHENG Yusheng, ZHANG Liquan, MO Tianming, et al. Solids control and re-use of water base drilling fluid in Beibu gulf[J].Drilling Fluid & Completion Fluid, 2016, 33(2):60-63.
[5]	ADGATE J L, GOLDSTEIN B D, MCKENZIE L M. Potential public health hazards, exposures and health effects from unconventional natural gas development[J]. Environmental Science & Technology, 2014, 48(15):8307-8320.
[6]	KARIM A A, BHAT R. Fish gelatin:properties, challenges, and prospects as an alternative to mammalian gelatins[J].Food Hydrocolloids, 2009, 23(3), 563-576.
[7]	DUCONSEILLE A, ASTRUC T, QUINTANA N. Gelatin structure and composition linked to hard capsule dissolution:A review[J]. Food Hydrocolloids, 2015, 43(43):360-376.