新型高性能转向酸的制备及性能评价

王艳丽

doi:10.3969/j.issn.1001-5620.2016.06.020

新型高性能转向酸的制备及性能评价

doi: 10.3969/j.issn.1001-5620.2016.06.020

王艳丽

中国石油大学胜利学院油气工程学院, 山东东营 257061

基金项目:

国家自然科学基金项目“液氮辅助页岩体积压裂增效机理研究”（51574270）

详细信息

作者简介:
王艳丽,1982年生,现在从事石油工程方面的研究及教学工作。电话13455713890;E-mail:395497954@qq.com。

中图分类号: TE357.12
计量
- 文章访问数: 773
- HTML全文浏览量: 188
- PDF下载量: 193
- 被引次数: 0
出版历程
- 收稿日期: 2016-09-23
- 刊出日期: 2016-11-30

Preparation and Evaluation of a New High Performance Diverting Acid

WANG Yanli

Department of Oil & Gas Engineering, Shengli College, China University of Petroleum, Dongying, Shandong 257061

摘要

摘要: 碳酸盐岩储层微裂缝发育，酸化压裂改造过程中酸液单向突进，造成储层有效裂缝沟通困难，酸化压裂改造效率低。为了提高碳酸盐岩储层酸化压裂改造效率，制备了一种对CO₂敏感的新型高性能转向酸体系，该体系主要由盐酸、SDS、TMPDA及缓蚀剂组成，配方为3.96% SDS+1.09% TMPDA+24% HCl+0.5% MZ-1缓蚀剂。虽然该体系本身不具有黏弹性，但在CO₂存在的条件下，体系中的TMPDA作为联接基与普通的SDS生成黏弹性极好的类Gemini型表面活性剂，CO₂消除之后可恢复到初始状态。相关性能评价及研究表明，该体系抗温、抗剪切性好、转向性能优越，酸液驱替前后岩心渗透率明显增大，而且渗透率差异较大的2组岩心的渗透率极差基本消除，可以有效地提高碳酸盐岩储层酸压改造效率，而且有希望实现循环利用。
- 自转向酸 /
- CO₂敏感 /
- Pseudo-Gemini型 /
- 黏弹性
Abstract: Carbonate rock reservoirs have plenty of micro fractures. Unidirectional fngering of acid solution in acidizing carbonate reservoirs always results in diffculties in communicating fractures and low effciency of acidizing fracturing job. To improve the job effciency, a new high performance diverting acid, which is sensitive to CO₂, has been developed. The diverting acid has a formulation as follows:3.96%SDS+1.09% MPDA+24% HCl+0.5% Z-1 (a corrosion inhibitor). This acid, although not viscoelastic, can acquire viscoelasticity through the reaction of TMPDA with SDS at the presence of CO₂, because the reaction of TMPDA with SDS produces a surfactant Gemini which had superior viscoelasticity. The diverting acid resumed its original state as soon as CO₂ disappeared. Laboratory study has shown that this diverting acid had good high temperature stability, good shearing performance, and superior diverting ability. In core experiment, several groups of cores were displaced with the new diverting acid. It was found that the permeability of the acid-flooded cores increased remarkably, even after removing the biggest permeability increases of two groups of cores. The effciency of acidizing fracturing job can be improved with the new diverting acid, and recycling of the diverting acid may also be realized.
- Self-diverting acid /
- CO₂ sensitive /
- Pseudo-Gemini /
- Viscoelasticity

HTML全文

参考文献(11)

[1]	贾承造, 郑民, 张永峰. 中国非常规油气资源与勘探开发前景[J]. 石油勘探与开发, 2012, 39(2):129-136. JIA Chengzao, ZHENG Min, ZHANG Yongfeng. Unconventional hydrocarbon resources in China and prospect of exploration and development[J]. Petroleum Exploration and Devlopment, 2012, 39(2):129-136.
[2]	邹才能, 杨智, 朱如凯, 等. 中国非常规油气勘探开发与理论技术进展[J]. 地质学报, 2015, 89(6):979-1007. ZOU Caineng, YANG Zhi, ZHU Rukai, et al. Unconventional hydrocarbon exploration and development and theoretical technology in China[J]. Acta Geologica Sinica, 2015, 89(6):979-1007.
[3]	曲占庆, 曲冠政, 齐宁, 等. 黏弹性表面活性剂自转向酸液体系研究进展[J]. 油气地质与采收率, 2011, 18(5):89-92 , 96, 117. QU Zhanqing, QU Guanzheng, QI Ning, et al. Research progress of viscoelastic surfactant selfdiverting acid system[J].Petroleum Geology and Recovery Efficiency, 2011, 18(5):89-92, 96, 117.
[4]	李侠清, 齐宁, 杨菲菲, 等.VES自转向酸体系研究进展[J]. 油田化学, 2013, 30(4):630-634. LI Xiaqing, QI Ning, YANG Feifei, et al.Research progress of VES based self-diverting acid system[J]. Oilfield Chemistry, 2013, 30(4):630-634.
[5]	YU M, MAHMOUD M A.Propagation and retention of viscoelastic surfactants following matrix-acidizing treatments in carbonate cores[J].SPE Journal, 2011, 16(4):993-1001.
[6]	何春明, 陈红军, 刘岚, 等.VES自转向酸变黏机理研究[J]. 钻井液与完井液, 2010, 27(4):84-86 , 101-102. HE Chunming, CHEN Hongjun, LIU Lan, et al. Variable-viscosity mechanism research of VES selfdiverting acids[J]. Drilling Fluid & Completion Fluid, 2010, 27(4):84-86, 101-102.
[7]	杜紫诚,苏军,曾然,等.原地自生封堵转向酸的研究[J]. 钻井液与完井液, 2015, 32(2):79-80 , 84, 103. DU Zicheng, SU Jun, ZENG Ran, et al.Research of self-diverting acid autogeny and plug in situ[J]. Drilling Fluid & Completion Fluid, 2010, 27(4):84-86:101-102.
[8]	HULL K L, SAYED M, AL-MUNTASHERI G A. Recent Advances in Viscoelastic Surfactants for Improved Production From Hydrocarbon Reservoirs[C]//SPE International Symposium on Oilfield Chemistry. Society of Petroleum Engineers, 2015.
[9]	ZHANG Y, FENG Y, WANG Y, et al.CO₂-switchable viscoelastic fluids based on a pseudogemini surfactant[J]. Langmuir, 2013, 29(13):4187-4192.
[10]	ZHANG Y, FENG Y, WANG Y, et al.CO₂-switchable viscoelastic fluids based on a pseudogemini surfactant[J]. Langmuir, 2013, 29(13):4187-4192.
[11]	AL-OTAIBI M A, AL-MUNTASHERI G A, HUSSEIN I A, et al. Laboratory evaluation of viscoelastic surfactant acid diversion for carbonate reservoirs[C]//SPE Middle East Oil and Gas Show and Conference. Society of Petroleum Engineers, 2011.