压裂液伤害室内评价  

Laboratory Evaluation of Fracturing Fluid Damage

作　　者：宋晓莉[1,2] 刘英[1,3] 雷宏[1,3] 

机构地区：[1]西安石油大学,陕西西安710065 [2]兰州城市学院,甘肃兰州730070 [3]延长油田股份有限公司西区采油厂,陕西延安717500

出　　处：《辽宁化工》2016年第4期523-524,527,共3页Liaoning Chemical Industry

摘　　要：随着低渗储层的开发,压裂技术工艺的应用愈来愈频繁,压裂液对压裂技术成功的起着至关重要的作用,在压裂过程中,压裂液起着传递能量携带支撑剂的作用,对改善储层的渗流通道有着积极的作用,然而其作为外来流体对储层又存在一定伤害。选用与储层配伍的低伤害压裂液对提高储层渗流能力显得尤为重要。本文以W储层为例,对胍胶压裂液、二氧化碳泡沫压裂液以及清洁压裂液进行了室内伤害评价。取得以下认识:胶压裂液对岩心的伤害最大,清洁压裂液与泡沫压裂液对储层的伤害区别不大。且随着岩心渗透率的增大,三种压裂液对岩心的伤害均减小,即岩心的物性越好,其受压裂液的伤害也越小;二氧化碳泡沫压裂液、清洁压裂液对W储层具有更好的适应性。With the development of low-permeability reservoirs, fracturing technique is frequently used. The fracturing fluid plays a vital role in the fracturing process, it can transfer energy and carry the proppant to improve reservoir flow channel, but the fracturing fluid as a foreign fluid has a certain damage to reservoir. So it is very important to select the fracturing fluid with good compatibleness and low damage to improve reservoir flow capacity. In this paper, taking W reservoir as an example, damage of guar gum fracturing fluid, carbon dioxide foam fracturing fluid and clean fracturing fluid to the reservoir was evaluated in the laboratory. The results show that： gum fracturing fluid has the greatest damage to the core, damage of clean fracturing fluid and foam fracturing fluid to the reservoir is similar. And with increasing of the core permeability, damage of three fracturing fluids to the core reduces; and carbon dioxide foam fracturing fluid and clean fracturing fluid have better adaptability to W reservoir.

关 键 词：压裂液 伤害 室内评价 

分 类 号：TE624[石油与天然气工程—油气加工工程]