水基泡沫在碳酸盐岩气藏酸化中的转向作用机理和效果研究  

DIVERTING MECHANISM AND EFFECTS OF WATER-BASED FOAM IN ACIDIZING IN CARBONATE GAS RESERVOIRS

作　　者：赵洪涛[1] 王素兵[1] 

机构地区：[1]四川石油管理局井下作业公司

出　　处：《天然气工业》2007年第4期79-81,共3页Natural Gas Industry

基　　金：四川石油管理局"非均质储层改造技术研究"项目的研究成果

摘　　要：在碳酸盐岩气藏中,经常需要对大段裸眼和多段长射孔井段完成的气井进行酸化作业。因此,要使纵向上所有井段都能进酸解堵和改造,必然面临着酸液的转向分流问题。原有的酸化转向技术(如封隔器和桥塞分层酸化技术、堵塞球转向技术、固体颗粒转向剂等)虽然在一定条件下是有效的,但尚存在不少缺陷,这些技术适应范围窄(即条件不具备无法应用或条件不适合往往无效);在不少条件下效果不够理想;甚至存在潜在伤害、使用不便、货源受限等突出矛盾。为此,开展了水基泡沫转向技术的研究,较好地解决了上述问题。通过四川石油管理局井下作业公司近几年的应用,已经初步验证了水基泡沫转向技术的作用机理、优点、分流作用和增产效果。As for carbonate gas reservoirs,it is common to acidize long open holes or several thick perforated intervals.Thus,it is a great challenge to divert acid into all zones.The previously used acidizing-diverting techniques,including multi-zone acidizing with packer and bridge plug,diverting with plug ball,diverting solids,are effective in some cases,but still have some defects such as application limitations,no ideal results in many cases,causing potential damages,being inconvenient for use,being in short supply,and etc.In recent years,the technology of diverting with water-based foam is used widely all over the world.It has been proven to be effective for acid diversion in carbonate formations.The field application in Sichuan has also verified the mechanism,the advantages,the diverting effects and stimulation effects of water-based foam.

关 键 词：完井 水基泡沫 酸化 碳酸盐岩 气藏 分流 

分 类 号：TE377[石油与天然气工程—油气田开发工程]