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石油与天然气化工
CHEMICAL ENGINEERING OF OIL & GAS
一种新型低固相油溶性暂堵型修井液的研制
谢英’熊启勇”孟祥娟乔欣”彭建云周理志
2016
1.中国石油塔里木油田油气工程研究院2.中国石油新疆油田油气工程研究院3.西南石油大学材料科学与工程学院
摘要针对柯克亚高温高盐凝析气藏储层敏感性强、修井液与储层不配伍导致地层严重伤害以及修井液漏失严重等生产实际问题，制备了一种具有抗温抗盐好、对地层伤害低、暂堵屏蔽能力强和防漏失能力高的低固相油溶性暂堵型修井液。实验对不同单剂进行了优选，并根据优选结果设计出最佳配方：净化地层水十1%（w)XF黏土稳定剂十0.01%（w)TF-280助排剂十0.7%（w）EDTA二钠铁离子络合剂十1.0%（w）KY-6S增黏降滤失剂十4%（w）)油溶性暂堵剂（C。石油树脂与Cs石油树脂质量比为1.5：1.0)十0.030%（w）AES分散剂。对该修井液体系的表观黏度、静态悬浮时间、高温高压失水量(93℃3.45MPa）、24h耐温黏度保留率、暂堵率和岩心渗透率损害率进行了评价，各项指标优于 SY/T5834一2014《低固相压井液性能指标及评价方法》，表明该修井液性能良好，能应用于高温高矿化度油藏修井作业。
关键词高温高矿化度低固相油溶性暂堵型修井液暂堵率岩心渗透率损害率
中图分类号：TE358
文献标志码：A
D0I:10.3969/i.issn.1007-3426.2016.04.015
Preparation of a new oil-soluble plugging workover liquid with low solid phase XieYing',Xiong Qiyong,Meng Xiangjuan',Qiao Xin’,PengJianyun',ZhouLizhi
(l. Tarim Oilfield Oil and Gas Engineering Research Institute , Korla 841000, China)(2. Xinjiang Oilfield Oil and Gas Engineering Research Institute, Karamay 834000, China)
(3. Institute of Material Science and Engineering, Southawest Petroleum University + Chengdu 610500, China) Abstract: A new oil-soluble plugging workover liquid with low solid phase was prepared for
application in high temperature and high salinity reservoir . Different single agents were selected in experiment , and according to the result the best formula was optimized : purified formation water +1 wt% XF clay stabilizer +0.01 wt% TF-280 Drainage agent +0.7 wt% disodium EDTA ferric ion stabilizer +1.0 wt% KY-6S filtration reducer +4 wt% oil soluble plugging agent (quality ratio of Cs petroleum resin and C5 petroleum resin is 1.5 : 1.0) +0.030 wt% AES dispersant. The optimized workover fluid properties such as apparent viscosity , static suspension time, high temperature and high pressure water loss (93C,3.45 MPa), retention rate of 24 h temperature resistance viscosity , temporary plugging rate and core permeability damage rate were evaluated . The results showed that the optimized workover fluid properties are better than the industry standard SY /T 5834—2014, and the workover fluid can be well used for workover in high temperature and high salinity reservoir .
Key words : high temperature, high salinity , low solid phase, oil.soluble plugging workover liquid , temporary plugging rate, damage rate of core permeability
基金项目：国家科学自然基金“特高温高盐油藏驱油用TTSS系列表面活性剂的开发”（51071433），
作者简介：谢英（1981一），女，工程师，2007年7月毕业于中国石油大学(北京)油气井工程专业，现从事提高采收率和注水相关工作。E-mail;xy-tlm@petrochina.com.cn