煤层气井用非离子聚丙烯酰胺锆冻胶压裂液优选  

Research on Nonionic Polyacrylamide Zirconium Gel Fracturing Fluids in Coalbed Methane Gas Wells

作　　者：赵辉[1] 戴彩丽[2,3] 梁利[4] 王欣[4] 赵福麟[2] 

机构地区：[1]中国石化胜利油田分公司地质科学研究院,山东东营257015 [2]重质油国家重点实验室(中国石油大学(华东)),山东青岛266555 [3]中国石油勘探开发科学研究院廊坊分院,河北廊坊065007 [4]中国石油大学(北京)石油工程学院,北京102249

出　　处：《石油钻探技术》2012年第1期64-68,共5页Petroleum Drilling Techniques

基　　金：国家科技重大专项"大型油气田及煤层气开发"之专题"煤层气藏低伤害高效能压裂液研究"(编号:2008ZX05037-003)部分研究内容

摘　　要：活性水、瓜胶压裂液是国内煤层气井压裂最常用的压裂液,但活性水压裂液流变性能差,瓜胶压裂液破胶残渣含量高对煤层的伤害大,限制了这两类压裂液在煤层压裂中的应用。为此,针对煤层温度和渗透率低的特点,在分析影响锆冻胶压裂液性能因素的基础上,优选出了适用于煤层气井压裂的非离子型聚丙烯酰胺锆冻胶压裂液配方(0.400%PAM+0.035%ZrOCl2)。通过室内试验对优选出的非离子型聚丙烯酰胺锆冻胶压裂液的性能进行了评价,结果表明,该压裂液具有耐剪切、滤失量低、易破胶、携砂性能好、无残渣、对煤层伤害低、易返排的特点,适用于低温煤层压裂。Abstract： Active water and guar gum are widely used for coalbed methane tracturlng in China. Never theless,the application of these two types of fracturing fluid was limited due to poor theological properties of active water and severe formation damage of guar gum fracturing fluid. Considering the temperature and low permeability of coalbed, the formulation of nonionic polyacrylamide zirconium gel fracturing fluids suit- able for coalbed mechane fracturing was selected based on the analysis on the effects of different factors on the zirconium gel. The formulation is 0.4%PAM＋0. 035%ZrOCl2. The performance of the optimized for mulation of nonionic polyacrylamide zirconium gel fracturing fluids was evaluated through laboratory ex periments, and the results showed that, the formulation had the characteristics of shearing resistance, low filter loss, easy breaking, good proppant carrying capacity, nonresidue, low formation damage and easy flowback. It is suitable for the coalbed gas reservoirs fracturing.

关 键 词：煤层气压裂液锆冻胶聚丙烯酰胺 

分 类 号：TE357.12[石油与天然气工程—油气田开发工程]