水平井井眼轨迹对排水采气的影响  

Influence of the hole trajectory on horizontal gas well deliquification

作　　者：周兴付[1] 邹一锋[1] 傅春梅[1] 杨功田[1] 刘永辉[2] 

机构地区：[1]中国石化西南分公司川西采气厂,四川德阳618000 [2]西南石油大学,四川成都610500

出　　处：《复杂油气藏》2012年第1期76-79,共4页Complex Hydrocarbon Reservoirs

摘　　要：低渗气藏不断加大水平井开发力度,水平井数量急剧增加,井筒积液成为水平气井普遍存在的难题。根据水平井筒内气液两相流体由分层流向非分层流转变判别式,对影响水平段井筒携液的因素进行分析。分析表明:水平段井筒倾角越大、积液高度越高、管径越小,水平井筒中气液两相流型更容易从层流转向非层流,水平段中的液体更容易被气流带出。通过实例证明水平井井轨迹对气井排液有影响,B靶点比A靶点越高,井底积液越少。With the increase of horizontal well development,the fluid accumulation in well-bore is becoming a common problem in horizontal wells.The factors of effecting horizontal well fluid carrying are analyzed by using the discriminant that estimates fluid flow pattern into non-laminar from laminar.The results show that the greater the horizontal segment degree is,the higher the hydrops is,and the smaller the tube diameter is,the fluid flow pattern is easier to become non-laminar from laminar,and the fluid is easier to be carried out by gas flow.

关 键 词：水平井 携液 井筒倾角 积液高度 井眼轨迹 

分 类 号：TE243[石油与天然气工程—油气井工程]