含油钻屑微乳状液除油剂的研制及机理

doi:10.7623/syxb201606013

石油学报 ›› 2016, Vol. 37 ›› Issue (6): 815-820.DOI: 10.7623/syxb201606013

含油钻屑微乳状液除油剂的研制及机理

黄贤斌^1,2, 蒋官澄^1,2, 万伟³, 马克迪^1,2

1. 中国石油大学石油工程学院教育部重点实验室北京 102249;
2. 中国石油大学油气资源与探测国家重点实验室北京 102249;
3. 中国石油集团川庆钻探工程有限公司钻井液技术服务公司四川成都 610056

收稿日期:2015-11-20 修回日期:2016-03-02 出版日期:2016-06-25 发布日期:2016-06-30
通讯作者: 黄贤斌,男,1988年1月生,2010年获中国石油大学(华东)学士学位,现为中国石油大学(北京)石油工程学院博士研究生、加拿大阿尔伯塔大学国家公派联合培养博士生,主要从事钻井液及钻井液污染治理等方面研究。Email:xianbin1988@sina.com
作者简介:黄贤斌,男,1988年1月生,2010年获中国石油大学(华东)学士学位,现为中国石油大学(北京)石油工程学院博士研究生、加拿大阿尔伯塔大学国家公派联合培养博士生,主要从事钻井液及钻井液污染治理等方面研究。Email:xianbin1988@sina.com
基金资助:
国家自然科学创新研究群体项目"复杂油气井钻井与完井基础研究"(No.51221003)、国家高技术研究发展计划(863)项目"海上大位移井水平井钻井液关键技术研究"(2012AA091502)、国家高技术研究发展计划(863)项目"致密气藏高效钻井技术研究"(2013AA064803)资助。

Preparation and mechanism of microemulsion deoiler for oily cuttings

Huang Xianbin^1,2, Jiang Guancheng^1,2, Wan Wei³, Ma Kedi^1,2

1. MOE Key Laboratory of Petroleum Engineering, China University of Petroleum, Beijing 102249, China;
2. State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Beijing 102249, China;
3. Drilling Fluid Technology Service Company, CNPC Chuanqing Drilling Engineering Company Limited, Sichuan Chengdu 610056, China

Received:2015-11-20 Revised:2016-03-02 Online:2016-06-25 Published:2016-06-30

摘要/Abstract

摘要：

绘制了乳化剂混合物/十四烯/氯化钠溶液的拟三相图,选择拟三相图中的一个合适的点作为含油钻屑除油剂配方,并使用粒径分析手段证明除油剂属于微乳液。然后使用现场含油钻屑,对除油剂的性能进行评价,并通过动态界面张力实验解释了除油剂除油的机理。实验结果表明:除油剂分散相粒径范围在20~60 nm,属于微乳液;当除油剂与含油钻屑质量比大于等于1:1.5时,处理后含油量可以降至1% 之下;与白油/蒸馏水界面张力相比,5号白油与除油剂之间的界面张力可以迅速降低4~5个数量级。此外,使用后的废弃除油剂和从钻屑中洗去的油均有回收利用价值。该除油剂有效解决了油基钻井液钻井过程中产生的含油钻屑数量大、处理难和排放要求日益增高的问题。

关键词: 含油钻屑, 除油剂, 微乳液, 界面张力, 除油机理, 纳米结构

Abstract:

The pseudo ternary phase diagram of emulsifier mixture/tetradecene/NaCl solution was prepared, from which a proper dot was selected as deoiler formula for oily cuttings. The deoiler was identified as microemulsion by means of particle size analysis. Then the performance of deoiler was evaluated using field oily cuttings. Meanwhile, the oil removing mechanism of deoiler was interpreted by dynamic interfacial tension experiment. Experimental results show that the particle size of deoiler dispersed phase is ranged from 20 to 60 nm, so that the deoiler belongs to the microemulsion; when the mass ratio of deoiler to oily cuttings is equal or greater than 1:1.5, the oil content can be decreased to less than 1% after processing; compared with the interfacial tension of white oil/distilled water, that between No. 5 while oil and deoiler could be reduced by 4-5 orders of magnitude rapidly. In addition, the deoiler after use and the oil removed from oily cuttings have recycling values. This deoiler is able to effectively solve such problems as massive oily cuttings generated in the drilling with the use of oil-based drilling fluid, a difficulty in processing and increasingly high demand for emission.

Key words: oily cuttings, deoiler, microemulsion, interfacial tension, oil-removing mechanism, nanostructure

中图分类号:

TE992

黄贤斌, 蒋官澄, 万伟, 马克迪. 含油钻屑微乳状液除油剂的研制及机理[J]. 石油学报, 2016, 37(6): 815-820.

Huang Xianbin, Jiang Guancheng, Wan Wei, Ma Kedi. Preparation and mechanism of microemulsion deoiler for oily cuttings[J]. Acta Petrolei Sinica, 2016, 37(6): 815-820.

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含油钻屑微乳状液除油剂的研制及机理

Preparation and mechanism of microemulsion deoiler for oily cuttings

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