适用于苏里格气田苏东区块的压裂液延缓交联体系应用研究  

STUDY AND APPLICATION ON JL FRACTURING FLUID DELAYED CROSS-LINKING SYSTEM SUITED FOR SULIGE GAS FIELD

作　　者：黄朝阳[1] 王建民[1] 李峰[1] 张艳玲[1] 

机构地区：[1]河南油田分公司井下作业处

出　　处：《钻采工艺》2009年第6期91-93,123,共4页Drilling & Production Technology

摘　　要：文章就鄂尔多斯盆地伊陕斜坡气田JL压裂液延缓交联体系B剂的加量、交联液的PH值、胍胶浓度及压裂基液黏度、交联比、搅拌速度、基液pH值6个因素通过现场实验研究,对其结果进行了分析,将其因素的影响机理进行了阐释,通过现场试验确定了A:B=100:(10～12),稀释至50(%)制得的延缓交联液交联比=100:(0.3～0.5),在3r/s的地面搅拌速度条件下延缓交联时间为90～220s,是JL延缓交联液的最佳配制条件。优化条件的压裂液延缓交联体系投入现场压裂施工应用后,压裂液在携砂过程中,既不脱砂,摩阻又降到了最大限度,满足了施工泵压要求。试气后地层压力均在26.8MPa以上,产量都超过了6.2×104m3/t,效果显著,达到了气层改造的目的。This paper analyzed 6 influential factors of JL fracturing fluid delayed cross-linking system used in Erdos Yishan slope stripe gas field,including the amount of B agent,pH value of crosslinked fluid,the concentration of guanidine gum and the viscosity of fracturing base fluid,the proportion of cross-linking,stirring rate and pH value of the base fluid,and the influence mechanism for 6 factors were discussed.The field experiment determined the optimum preparation conditions of JL delayed cross-linked system which is A:B=100:(10～12),diluted to50%,the proportion of cross-linking is 100:(0.3～0.5),and the delayed cross-linking time is 90～220s when stirring rate is 3r/s.The field application of JL delayed cross-linking system based on the optimum preparation conditions showed that the fracturing fluid in the course of carrying sand reduced the friction furthest,met the requirements of operation pump pressure.The test gas after fracturing results showed that formation pressure of all wells was above 26.8MPa,the gas output of all wells were more than 6.2 104m3/t.The goal of reconstruct gas horizon was achieved by using delayed cross-linking system.

关 键 词：苏里格 延缓 交联 延缓交联 

分 类 号：TE357.12[石油与天然气工程—油气田开发工程]