苏里格气田防支撑剂回流压裂液快速返排技术研究  

Research on Quick Flowing Back of Fracturing Liquid Which Can Prevent Backflowing of Proppant in Sulige Gasfield

作　　者：黄建宁[1,2] 

机构地区：[1]西安石油大学石油工程学院,陕西西安710065 [2]长庆油田分公司,陕西西安710049

出　　处：《油气井测试》2009年第5期61-63,共3页Well Testing

摘　　要：苏里格气田属于典型的"三低"气田,自然投产后单井产量总体偏低。理论和实践都证明,通过适度规模的压裂改造,可以显著提高开采效果。由于压裂井均有一个压后排液过程,排液速度过快或不控制放喷均会造成支撑剂回流。为此,要在不同的排液阶段选择合适的油嘴,并根据地层条件优化压裂施工顶替液量,同时,应用纤维加砂压裂技术,提高压裂改造效果。Sulige gas field is a typical gasfild with 'three lows' (low porosity, low permeability and low productivity). Theoretically and practically proper stimulation treatment can greatly improve the effect of development. After fracturing unloading must be done, and too high unloading speed or uncontrolled open flow will make proppant backflow, so it is necessary to choose proper chokes and the amount of fracturing fluid in different stages according to the gas zone status, and to add fiber and sand in fracturing fluid to improve the operation.

关 键 词：苏里格气田 压裂改造 支撑剂回流 快速返排 

分 类 号：TE357.1[石油与天然气工程—油气田开发工程] P618.13[天文地球—矿床学]