低压低产气井自生气排水采气技术的研究与应用  

RESEARCH AND APPLICATION OF A NEW FOAM DRAINAGE GAS RECOVERY TECHNOLOGY IN LOW PRESSURE AND LOW PRODUTION GAS WELL

作　　者：杨泽超 申洪 余娟[3] 刘继伟 杨智 

机构地区：[1]四川仁智油田技术服务股份有限公司 [2]四川德阳联益石油天然气勘探开发有限公司 [3]中石化西南油气分公司川西采气厂

出　　处：《钻采工艺》2014年第3期63-66,9,共4页Drilling & Production Technology

基　　金：四川省教育厅人文社科重点研究基地项目"鄂尔多斯盆地岩性气藏储量综合评价方法及应用研究"(编号:川油气科SKZ07-01)的研究成果。本文研究成果于2013年由四川省科技厅专家委员会鉴定为"国内领先水平"

摘　　要：排水采气工艺是有水气田采气工艺的主要方法,已成为国内外气田开采后期的一项主要开采措施,常规泡沫排水采气工艺必须依赖井底的天然气流的扰动,应用表明:当气井产量小于气井含泡沫排水剂状态下临界携液流量时,泡排效果不理想。为此,针对常规泡沫排水采气工艺的局限性,研究了自生气泡沫排水采气工艺,该工艺在无井底气流的扰动下能自动起泡使低压低产含水气井泡排显著,使水淹井复产;并评价了自生气泡沫排水剂起泡、携液及腐蚀性能;在现场开展了8口气井10井次的现场试验,共排液17.5 m3,累计增产天然气59.2×104m3,增产效果明显。Drainage gas recovery technology is the primary gas production method in water gas field at home and abroad.Conventional foam drainage gas recovery technology must rely on the bottom hole gas stream disturbance, application results show: When gas well production is less than critical carrying liquid flow under the status of foam drainage agent,the effect of foam drainage gas recovery is not ideal. According to the limitations of the conventional foam drainage gas recovery technology,an authigenic gas foam drainage gas recovery technology was studied. The technology could make foam automatically blistering in the absence of downhole flow disturbances,the increase production effect of low pressure and low yield gas well was very remarkable,and it could make the drowned well put back on production as soon as possible. The field research results in the8 wells showed that the increase production effect was outstanding,total drainage was 17. 5m3,the cumulative incremental gas was 59. 2 × 104m3.

关 键 词：低压低产 气井 泡沫排水采气 自生气 腐蚀 

分 类 号：TE377[石油与天然气工程—油气田开发工程]