吉格森油田柔性微凝胶深部调驱体系室内研究及现场应用——以淖尔区块为例  

Flexible Microgel Deep Profile System Laboratory Study and Field Application of Gigsen Oilfield——to Nur Block Example

作　　者：孙千[1] 李华斌[2,1] 黄浩[1] 牛忠晓[1] 霍隆军[1] 吴灿[1] 

机构地区：[1]成都理工大学能源学院,成都610059 [2]油气藏地质及开发工程国家重点实验室(成都理工大学)

出　　处：《科学技术与工程》2013年第20期5931-5935,共5页Science Technology and Engineering

摘　　要：柔性微凝胶分散颗粒(微球)可用油田污水配制,具有耐温、耐盐、成本低廉等优点。针对吉格森油田各油组主力油层分布广、厚度大,所占储量比重大,地下原油物性一般,地层温度较高,地层水矿化度高(>90000mg/L)这一情况,开展了柔性微凝胶深部调驱在吉格森油田的适应性及现场应用情况分析。实验所选用的纳米级和微米级微球溶解性和热稳定性都较好,微米级微球更好。4种微球均具有一定的封堵性,其中2号微球颗粒的残余阻力系数较大,为3.09,其次为1号微球,其残余阻力系数为1.44。天然岩心的驱油实验结果表明柔性微凝胶驱具有较好的驱油效果,但是微球尺寸要在孔径的1/8～1/3,才能保证有效封堵。现场实际应用情况表明吉格森油田在各个区块所开展的柔性微凝胶深部调驱增产措施,在一定程度和阶段内取得了较好的控水稳油效果。Flexible microgel dispersing particles （microspheres） oilfield wastewater can be prepared by oilfield wastewater, it is temperature, salinity and low-cost. In this paper, to the situation about Gigsen oilfield oil group major reservoirs has wide distribution, large thickness, the share of reserves than major, underground crude oil physical properties in general, the higher the formation temperature, high salinity of the formation water （〉 90000mg / L）, and Launch a analysis of flexible microgel deep profile in Gigsen oilfield adaptability and field applications. The experimental optional nanometer and micron microspheres both have a good solubility and thermal stability, the micron microspheres are better. Four kinds of microspheres have certain closure, the No.2 microspheroidal particles have a larger residual resistance factor, is 3.09, followed by the microspheres of the No.2, and its residual resistance factor is 1.44. The natural core flooding experiment results show that the flexible microgel flooding has good oil displacement effect, but the size of the microspheres should be in the pore size of 1/8 to 1/3, in order to ensure effective closure. The actual application shows the Gigsen oilfield carried out flexible microgel Deep Profile stimulation in various blocks, achieved a better effect of controlling water and Stabilizing oil in a certain extent and stage.

关 键 词：柔性微凝胶 深部调驱 分散溶解性 水化膨胀倍数 热稳定性 残余阻力系数 配伍性 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]