水基钻井液用润滑剂SDL-1的研制与评价

李斌; 蒋官澄; 王金锡; 王兰; 刘凡; 王玺; 杨丽丽

doi:10.3969/j.issn.1001-5620.2019.02.007

水基钻井液用润滑剂SDL-1的研制与评价

doi: 10.3969/j.issn.1001-5620.2019.02.007

李斌¹,
蒋官澄^2,3,
王金锡^2,3,
王兰⁴,
刘凡^2,3,
王玺⁵,
杨丽丽^2,3

1. 中联煤层气有限责任公司晋西分公司, 太原 030000;
2. 石油工程教育部重点实验室(中国石油大学(北京)), 北京 102249;
3. 油气资源与探测国家重点实验室(中国石油大学(北京)), 北京 102249;
4. 中石油川庆钻探工程有限公司钻采工程技术研究院, 四川广汉 618300;
5. 中石油钻井工程技术研究院海外钻井技术研究所, 北京 102200

基金项目:

“十三五”国家科技重大专项“复杂结构井、丛式井设计与控制新技术”（2017ZX05009-003）；“十三五”国家科技重大专项“深井超深井优质钻井液与固井完井技术研究”（2016ZX05020-004）；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”（ZSWSAKYXM2019-076）

详细信息

作者简介:
李斌,高工,1999年毕业于石油大学(北京),长期从事钻完井专业(尤其是非常规油气领域)技术研究和实践工作;E-mail:lbin10@126.com

中图分类号: TE254
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出版历程
- 收稿日期: 2018-12-23
- 刊出日期: 2019-04-30

Development and Evaluation of a Water Base Drilling Fluid Lubricant SDL-1

LI Bin¹,
JIANG Guancheng^2,3,
WANG Jinxi^2,3,
WANG Lan⁴,
LIU Fan^2,3,
WANG Xi⁵,
YANG Lili^2,3

1. Jinxi Branch of China United Coalbed Methane Co., Ltd., Taiyuan, Shanxi 030000;
2. MOE Key Laboratory of Petroleum, China University of Petroleum(Beijing), Beijing 102249;
3. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum(Beijing), Beijing 102249;
4. Drilling & Production Technology Research Institute, CNPC Chuanqing Drilling Engineering Co. Ltd., Sichuan 618300;
5. Department of Overseas Drilling Technical Research, CNPC Drilling Research Institute, Beijing 102200

摘要

摘要: 高摩阻高扭矩问题是制约水基钻井液在大位移长水平段井应用的因素之一。针对这一问题，利用长链脂肪酸、小分子多元醇等原料，合成出了多元醇合成酯主剂，然后与极压添加剂复配形成水基钻井液用润滑剂SDL-1。性能评价结果表明，4%淡水基浆中加入1%润滑剂SDL-1，润滑系数的降低率为85.2%，泥饼的黏附系数降低率为59.3%；在150℃下老化16 h后，润滑系数的降低率可达94.0%，泥饼的黏附系数降低率为62.3%；在180℃下老化16 h后，润滑系数降低率仍可达90%，因此润滑剂SDL-1可抗温180℃；此外还能抵抗30% NaCl和30% CaCl₂的污染。四球摩擦实验表明，经30 min摩擦后，SDL-1能有效减少划痕，降低表面磨损，抗磨效果优于国外润滑剂DFL。在2.0 g/cm³无土相钻井液体系和2.2 g/cm³环保钻井液体系中加入2%的SDL-1润滑剂后对体系的流变性影响较小，并能将体系的润滑系数降至0.08。整体而言，SDL-1具有良好的润滑性能和抗温抗盐污染性能，在深层大位移井中具有一定的应用前景。
- 水基钻井液 /
- 润滑剂 /
- 钻井液添加剂 /
- 高摩阻 /
- 高扭矩
Abstract: High friction and high torque are two factors restricting the use of water base drilling fluids in extended reach horizontal drilling. A water base drilling fluid lubricant SDL-1 has been developed to resolve these problems. SDL-1 is a compound of ester synthesized with long chain fatty acid and low molecular weight polyalcohol, and some extreme-pressure additives. Evaluation of SDL-1 showed that addition of 1% SDL-1 in 4% fresh water base mud reduced the coefficient of friction of the mud by 85.2% and reduced the adhesion coefficient of mud cake by 59.3%. When aging at 160℃ for 16 h, the coefficient of friction of the mud was reduced by 94.0% and the adhesion coefficient of mud cake was reduced by 62.3%. When aging at 180℃ for 16 h, the coefficient of friction of the mud was still reduced by 90.0%, indicating that SDL-1 functions effectively at 180℃. SDL-1 is able to resist contamination by 30% NaCl and 30% CaCl₂. In four-ball friction test, after 30 min of friction, SDL-1 effectively reduced the amount of scratch, reducing the surface wear-and-tear. This test showed that SDL-1 is a better lubricant in friction resistant than another lubricant DFL. When treated with 2% SDL-1, the rheology of a clay-free drilling fluid of density 2.0 g/cm3 and an environmentally friendly drilling fluid of density 2.2 g/cm³ was only slightly affected, and the friction coefficient of the two drilling fluids was reduced to 0.08. SDL-1 as a lubricant shows good lubricating performance and resistance to high temperature and salt contamination, and will find its application in deep extended reach drilling.
- Water base drilling fluid /
- Lubricant /
- Drilling fluid additive /
- High friction /
- High torque

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参考文献(16)

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