塔河耐温抗盐凝胶堵剂的制备及性能评价  

Preparation and performance evaluation of Tahe temperature and salt resistant gel plugging agent

作　　者：冯亚超 何龙 黄雪莉[1] 张晨萌[1] 王雪宁 FENG Yachao;HE Long;HUANG Xueli;ZHANG Chenmeng;WANG Xuening(College of Chemical Engineering,Xinjiang University,Urumqi 830017,China;Research Institute of Petroleum Engineering Technology,Northwest Oilfield Company,SINOPEC,Urumqi 830011,China;Key Laboratory for Enhanced Recovery of SINOPEC in Carbonate Fractured-Vuggy Reservoirs,Urumqi 830011,China)

机构地区：[1]新疆大学化工学院,新疆乌鲁木齐830017 [2]中国石化西北油田分公司石油工程技术研究院,新疆乌鲁木齐830011 [3]中国石化缝洞型油藏提高采收率重点实验室,新疆乌鲁木齐830011

出　　处：《应用化工》2024年第9期2034-2038,2042,共6页Applied Chemical Industry

基　　金：国家重大专项(2016ZX05053)。

摘　　要：以两种类型的聚丙烯酰胺(Q-9、Q-7)为主剂,刺槐豆胶作为增强剂,硫脲作为除氧剂,对苯二酚、乌洛托品作为交联剂,制备了一种具有耐温抗盐的凝胶堵剂;以基液黏度、成胶时间、成胶强度和脱水量为依据优选最佳配方,考察了该凝胶堵剂的成胶强度、耐温性能和封堵效果。结果表明,最佳配方1%聚合物Q-9+0.5%聚合物Q-7+0.3%刺槐豆胶+0.25%硫脲+0.6%乌洛托品+0.6%对苯二酚,基液黏度为854.4 mPa·s,在130℃条件下,成胶时间3.4 h,成胶强度34~37 Pa, 30 d内脱水量为0.443 9 mL;注入1 PV凝胶基液时,突破压力达36 MPa,封堵率为99.63%。Two types of polyacrylamide(Q-9,Q-7)as the main agent,black locust bean gum as the strengthening agent,thiourea as the deoxidizer,hydroquinone,urotropine as the crosslinking agent,prepared a gel plugging agent with temperature resistance and salt resistance;the best formula was selected according to the viscosity of the base fluid,gel forming time,gel forming strength and dehydration,and the gel forming strength,temperature resistance and plugging effect of the gel plugging agent were investigated.The results show that the optimal formula is 1%polymer Q-9,0.5%polymer Q-7,0.3%locust bean gum,0.25%thiourea,0.6%urotropine,and 0.6%hydroquinone.The viscosity of the base solution is 854.4 mPa•s.Under 130℃conditions,the gelation time is 3.4 h,the gelation strength is 34~37 Pa,and the dehydration within 30 d is 0.4439 mL;when the 1 PV gel base fluid was injected,the breakthrough pressure reached 36 MPa,and the plugging rate was 99.63%.

关 键 词：凝胶 耐温抗盐 堵剂 封堵率 

分 类 号：TQ326.4[化学工程—合成树脂塑料工业] TQ427.2[石油与天然气工程—油气田开发工程] TE357.46