新型碳酸盐岩储层酸化解堵体系合成及解堵影响因素分析

钟宝鸿; 钟壮壮; 高宇田

doi:10.3969/j.issn.1001-5620.2021.03.018

新型碳酸盐岩储层酸化解堵体系合成及解堵影响因素分析

doi: 10.3969/j.issn.1001-5620.2021.03.018

1. 延长油田股份有限公司下寺湾采油厂, 陕西延安 716000;
2. 延长油田股份有限公司定边采油厂, 陕西榆林 718600

详细信息

作者简介:

中图分类号: TE357.2
计量
- 文章访问数: 646
- HTML全文浏览量: 187
- PDF下载量: 43
- 被引次数: 0
出版历程
- 收稿日期: 2021-02-12

Formulation of a New Acid Fluid for Blocking Removal in Carbonate Formations and Analysis of Factors Affecting Blocking Removal

1. Xiasiwan Bay Oil Production Plant, Yanchang Petroleμm (Group) Co., Ltd., Yanan, Shaanxi 716000;
2. Dingbian Oil Production Plant, Yanchang Petroleμm (Group) Co., Ltd., Yulin, Shaanxi 718600

摘要

摘要: 针对碳酸盐岩储层钻井过程中岩屑及钻井液颗粒堵塞储层喉道严重现象，基于有机化学理论和酸化体系制备原则合成了一类新型碘磺酸乙酯并配制新型碳酸盐岩储层酸化解堵体系。室内以碳酸盐岩溶蚀率和渗透率为评价指标，分析了盐酸含量、碘磺酸乙酯含量、体系温度及初始渗透率对新型酸化解堵性能影响，并揭示其解堵机理。实验表明，盐酸及碘磺酸乙酯含量、体系温度及初始渗透率增加均有助于储层溶蚀率和渗透率提高，含7%盐酸的新型酸化解堵体系使地层溶蚀率及渗透率恢复率达96.1%和111.3%，远高于传统土酸体系的80.3%和76.1%。体系中含有的碘磺酸乙酯可延长溶蚀时间，提高解堵效率，展现出优异解堵和环保性能。
- 碳酸盐岩储层 /
- 油田复合酸 /
- 酸化解堵 /
- 提高采收率 /
- 解堵机理
Abstract: Drilled cuttings and particles from drilling fluids generally cause severe blocking of the pores in carbonate reservoir rocks. A blocking removal acid fluid was developed to cope with this problem. The acid fluid is formulated with a new ethyl iodosulfonate which was synthesized based on the principles of organic chemistry and the principles of preparing acid fluids. In laboratory test, the effect of several factors, such as HCl content, ethyl iodosulfonate content, temperature of the acid fluid and initial permeability, on the blocking removal performance of the new acid fluid was analyzed using the dissolution rate of carbonate rocks and permeability as the evaluation indices. It was found that increases in the contents of HCl and ethyl iodosulfonate, the temperature of the acid fluid and the initial permeability all are beneficial to the increases of dissolution rate and the permeability of the carbonate rocks; Using the new acid fluid containing 7% HCl, the dissolution rate and percent recovery of permeability of the formation rocks were as high as 96.1% and 111.3%, respectively, far greater than these two indices for conventional clay acid, which are 80.3% and 76.1%, respectively. The existence of ethyl iodosulfonate in the acid fluid helps extend the time for the dissolution of the carbonate rocks, and enhance efficiency of blocking removal, exhibiting excellent blocking removal and environment protection performance.
- Carbonate reservoir /
- Compound acids for oilfield application /
- Acidification for blocking removal /
- Enhance production recovery /
- Mechanism of blocking removal

HTML全文

参考文献(14)

[1]	LI Q, WANG Y, LI Q, et al. Study on the optimization of silicone copolymer synthesis and the evaluation of its thickening performance[J].RSC. Advances,2018, 8(16):8770-8778.
[2]	李强,王彦玲,李庆超,等. 曲面法优化硅氧烷三元共聚物合成工艺[J]. 中国科技论文,2017,12(15):1711-1716. LI Qiang, WANG Yanling, LI Qingcao, et al. Surface method to optimize the synthesis process of siloxane terpolymer[J]. China Sciencepaper,2017,12(15):1711-1716.
[3]	夏亮亮,周明,张灵,等. 两性/阴离子表面活性剂清洁压裂液性能评价[J]. 油田化学,2015,32(3):341-344. XIA Liangliang, ZHOU Ming, ZHANG Ming, et al. Performance evaluation of amphoteric/anionic surfactant cleaning fracturing fluid[J]. Oilfield Chemistry, 2015,32(3):341-344.
[4]	李强,王彦玲,李庆超,等. 新型CO₂压裂用增稠剂的增稠性能及机理[J]. 钻井液与完井液,2019,36(1):102-108. LI Qiang, WANG Yanling, LI Qingcao, et al. Thickening performance and mechanism of a new type of thickener for CO₂ fracturing[J]. Drilling Fluid & Completion Fluid,2019,36(1):102-108.
[5]	吴海艳,张金辉,李萍,等. 微波辅助盐酸酸化滑石制备吸油剂的研究[J]. 应用化工,2017,46(4):689-692. WU Haiyan, ZHANG Jinhui, LI Ping, et al. Study on preparation of talc adsorbent by microwave/hydrochloric acidification[J]. Applied Chemical Industry, 2017, 46(4):689-692.
[6]	王琨,詹立,周朗, 等. 超深裂缝性碳酸盐岩伤害及解堵酸化模拟[J]. 钻采工艺,2020,43(3):42-45. WANG Kun, ZHAN Li, ZHOU Lang, et al. Simulation of damage and unplugging acidification of ultra-deep fractured carbonate rock[J]. Drilling & Production Technology,2020,43(3):42-45.
[7]	孙玉海, 杨景辉, 李永鹏, 等. 一种阳离子聚合物酸液稠化剂的制备及其性能研究[J]. 钻采工艺, 2018, 41(2):102-104. SUN Yuhai, YANG Jinghui, LI Yongpeng, et al. Study on the preparation and performance of a cationic polymer acid thickener[J]. Drilling & Production Technology, 2018,41(2):102-104.
[8]	廖纪佳,唐洪明,朱筱敏, 等. 特低渗透砂岩储层水敏实验及损害机理研究[J]. 石油与天然气地质, 2012, 33(2):321-328. LIAO Jijia, TANG Hongming, ZHU Youmin, et al. Study on water sensitivity test and damage mechanism of ultra-low permeability sandstone reservoir[J]. Oil & Gas Geology, 2012, 33(2):321-328.
[9]	董卓鑫, 艾池, 董国富, 等. 新型多元复合酸化解堵液体系研究[J]. 能源化工, 2020, 41(3):54-57. DONG Zhuoxin, AI Chi, DONG Guofu, et al. Study on a new type of multi-component acidification and plugging removal system[J]. Energy Chemical Industry, 2020, 41(3):54-57.
[10]	孙淑娟, 张群正, 刘金磊, 等. 碳酸盐储层酸化解堵配方优化及解堵机理[J]. 油田化学, 2017, 34(4):585-589. SUN Shujuan, ZHANG Qunzheng, LIU Jinlei, et al. Optimization of acidizing and plugging removal formula and plugging removal mechanism for carbonate reservoirs[J]. Oilfield Chemistry,2017,34(4):585-589.
[11]	魏子扬,戴彩丽,姜维东,等. 海上油田酸液预解堵体系筛选及评价[J]. 油田化学,2015,32(1):53-56,82. WEI Ziyang, DAI Caili, JIANG Weidong, et al. Screening and evaluation on acidification plug preremoval system in offshore reservoir[J].Oilfield Chemistry,2015,32(1):53-56,82.
[12]	方裕燕,张烨,杨方政,等. 一种高温就地自生酸酸液体系的性能评[J]. 油田化学, 2013, 30(2):168-171. FANG Yuyan, ZHANG Ye, YANG Fangzheng, et al. Performance evaluation of a high-temperature in-situ autogenous acid solution system[J]. Oilfield Chemistry, 2013, 30(2):168-171.
[13]	张汝生,周成裕,熊伟, 等. 碳酸盐岩用冻胶酸高温流变性及其酸岩反应动力学研究[J]. 应用化工, 2017, 46(8):1457-1460. ZHANG Rusheng, ZHOU Chengyu, XIONG Wei, et al. High temperature rheologicaland acid-rock reaction kinetics study of gel acid for carbonatite[J]. Applied Chemical Industry, 2017, 46(8):1457-1460.
[14]	王磊,张学鹏,薛蓉, 等. 纳米材料复合泡沫缓速酸协同增效作用的研究[J]. 应用化工, 2019, 48(2):276-280. WANG Lei, ZHANG Xuepeng, XUE Rong, et al. Synergistic effect of nano-material composite foam retarding acid[J]. Applied Chemical Industry,2019,48(2):276-280.