尕斯E_3~1油藏高温高矿化度调剖剂的研制与性能评价  

Development and performance study of high temperature and high salinity profile control agent in Gasikule E_3~1 reservoir

作　　者：王健 余恒 薛强 何涛 徐鹏 刘旭文 Wang Jian;Yu Heng;Xue Qiang;He Tao;Xu Peng;Liu Xuwen(State Key Laboratory of Oil/Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu,Sichuan,China)

机构地区：[1]西南石油大学油气藏地质及开发工程国家重点实验室

出　　处：《石油与天然气化工》2018年第4期68-72,共5页Chemical engineering of oil & gas

摘　　要：尕斯库勒E_3~1油藏高温高矿化度、油藏非均质性强、剩余油分散、在注水开发过程中水窜严重,导致水驱波及效率较低。对该类油藏,常规化学调剖堵水剂容易产生破胶、降解等现象,难以发挥明显作用。通过实验研制出在平均油藏温度为126℃,平均地层水矿化度为16.5×10~4 mg/L地层中调剖剂体系的优化配方:粗品魔芋粉(质量浓度5.0g/L)+悬浮剂(质量浓度700~1 000mg/L)+交联剂(体积分数1.0%~1.2%)+除氧剂(质量浓度100~200mg/L)。实验结果表明,该调剖剂在高温(126℃)、高盐(矿化度为16.5×10~4 mg/L)条件下老化30天后,堵剂体系微量脱水,无破胶现象,具有良好的耐温耐盐性能。In view of the high temperature and high salinity of Gasikule E 1 3 reservoir,the reservoir heterogeneity is strong and the remaining oil is dispersed,and the water channeling is serious during water flooding development,resulting in low efficiency of water flooding.For such a high-temperature and high-salinity reservoir,the conventional chemical profile control plugging agent is prone to breakage and degradation,and it is difficult to play a significant role.The optimal formulation of the profile control agent in the formation with the average reservoir temperature of 126℃and the average formation water salinity of 16.5×10 4 mg/L was developed by the experiment:crude konjak powder(concentration 5.0 g/L)+suspending agent(concentration of 700-1 000 mg/L)+cross-linking agent(volume fraction 1.0%-1.2%)+oxygen scavenger(concentration 100-200 mg/L).The experimental results show that the profile control agent was aging 30 days under the conditions of high temperature(126℃)high salt(mineralization degree of 16.5×10 4 mg/L),then the plugging agent system of micro-dehydration has no broken plastic phenomenon with good temperature resistance and salt resistance.

关 键 词：高温高矿化度油藏 魔芋胶 调剖剂 配方 性能评价 

分 类 号：TE39[石油与天然气工程—油气田开发工程]