天然气欠平衡钻井完井技术  

NATURAL GAS UNDERBALANCED DRILLING AND COMPLETION TECHNOLOGY

作　　者：杨令瑞[1] 杨玻[1] 肖润德[1] 肖新宇[1] 潘登[1] 

机构地区：[1]四川石油管理局钻采工艺技术研究院

出　　处：《钻采工艺》2005年第1期4-7,共4页Drilling & Production Technology

摘　　要：利用欠平衡钻井数值模拟软件对井内压力分布规律、环空速度分布、环空岩屑浓度分布及井口回压 影响规律进行了分析,讨论了地层出液对天然气钻井的影响,介绍了天然气排量与井底压力的关系、天然气欠平衡 钻井注入参数的确定、天然气钻井完井技术措施和天然气欠平衡钻井完井的条件。应用该套技术,在井浅2井、平 落19井和白浅111H井等进行了现场实践,取得了良好的技术经济效益。This article analyzed the pressure distribution law, annular velocity distribution, annular cuttings concentration distribution and influence law of wellhead back pressure by using Hydraulic UnderBalanced Simulator, discussed the influence of formation fluid production on natural gas drilling, introduced the relation between flow rate and bottom - hole pressure, determination of injection parameter, completion technical measures and completion conditions of un-derbalanced drilling. Through field application in well Jinqian 2,Pingluo 19 and Baiqian 111H, the technology has achieved very good technical and economical benefits.

关 键 词：天然气 欠平衡 钻井 完井 技术 

分 类 号：TE257[石油与天然气工程—油气井工程]