CQ-GNS压裂用稠化剂孪联非离子表面活性剂

doi:10.3969/j.issn.1002-302x.2015.z1.044

石油科技论坛 ›› 2015, Vol. 34 ›› Issue (增刊): 147-150.DOI: 10.3969/j.issn.1002-302x.2015.z1.044

CQ-GNS压裂用稠化剂孪联非离子表面活性剂

马托, 王忍峰, 徐洋, 柴巧玲, 李文彬

中国石油集团川庆钻探工程有限公司钻采工程技术研究院; 低渗透油气田勘探开发国家工程实验室

收稿日期:2015-07-08 出版日期:2015-10-25 发布日期:2015-11-16
基金资助:
基金项目：中国石油天然气集团公司工程技术分公司成果转化与推广应用项目“可回收低阻表面活性剂压裂液技术现场推广应用”（编号：2014T-004-004）。获奖情况：“可回收低阻表面活性剂压裂液”获2014年度中国石油集团川庆钻探工程有限公司科技进步一等奖。

CQ-GNS Twin Nonionic Surfactant for Fracturing Fluid Thickener

Ma Tuo, Wang Renfeng, Xu Yang, Chai Qiaoling, Li Wenbin

Drilling & Production Technology Research Institute of CNPC Chuanqing Drilling Engineering Co Ltd, Guanghan 618399, China; National Engineering Laboratory for Exploration & Development of Low-Permeability Oil & Gas Fields, Xi’an 710018, China

Received:2015-07-08 Online:2015-10-25 Published:2015-11-16
Supported by:

摘要/Abstract

摘要： 酸随着长庆致密油田开发的深入,水平井大规模分段压裂成为油田开发的主导技术,但伴随着压裂改造规模的扩大,压裂用水及返排液的处理成为制约水平井改造的主要因素。针对这一困难,开发了配套的CQ-GNS压裂用稠化剂孪联非离子表面活性剂,是可回收低阻表面活性剂压裂液体系的核心成分。压裂液体系具有无残渣、低伤害、低摩阻、直接混配,尤其是返排液可直接回收后,添加相同稠化剂可循环重复利用的特点,适合水平井及丛式井提速提效、节能环保和大规模工厂化作业需求。2012—2014年在长庆油田规模化推广145口油井及水平井（1392段）,累计配制压裂液量超过62.9×10⁴m³,实际用水量29.8×10⁴m³,节约用水33.1×10⁴m³,返排液回收利用率达97.4%,最高循环利用21次,平均节水率达52.6%,节水效果明显。

关键词: 可回收, 压裂液, 表面活性剂, 返排液, 水平井, 分段压裂

Abstract: Large-scale staged fracturing horizontal well has become the dominant development technology at Changqing Oilfield thanks to continual tight oil development at the oilfield. However, treatment of fracturing water and flow-back fluid is the main factor to impair renovation of horizontal well as the scale of fracturing is expanded. To solve this bottleneck, CQ-GNS twin nonionic surfactant for fracturing fluid thickener is developed to be used as core component of recoverable low-resistivity surfactant fracturing fluid system. This fracturing fluid system has a number of characteristics, such as free of residues, low damage, low resistivity, direct mixture and able to be directly recovered after flow-back and recycled when added with the same thickener. It is suitable for horizontal wells and cluster wells increasing speed and efficiency, saving energy and protecting the environment, large-scale factory-like operation. It was used for 145 oil wells and horizontal wells in Changqing Oilfield between 2012 and 2014, with the formulated fracturing fluid accumulated to 62.9×10⁴m³. The actual water consumption was 29.89×10⁴m³, saving 33.1×10⁴m³ of water. The recycling and utilization rate of flow-back fluid reached 97.4 percent and was recycled for 21 times at maximum. The average water-saving rate was apparently improved by reaching 52.6 percent.

Key words: recoverable, fracturing fluid, surfactant, flow-back fluid, horizontal well, staged fracturing

中图分类号:

马托, 王忍峰, 徐洋, 柴巧玲, 李文彬. CQ-GNS压裂用稠化剂孪联非离子表面活性剂[J]. 石油科技论坛, 2015, 34(增刊): 147-150.

Ma Tuo, Wang Renfeng, Xu Yang, Chai Qiaoling, Li Wenbin. CQ-GNS Twin Nonionic Surfactant for Fracturing Fluid Thickener[J]. Petroleum Science and Technology Forum, 2015, 34(增刊): 147-150.

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CQ-GNS压裂用稠化剂孪联非离子表面活性剂

CQ-GNS Twin Nonionic Surfactant for Fracturing Fluid Thickener

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