偏心防斜技术的研究及应用  

Research and application of eccentric inclining Prevention technique

作　　者：李增科[1] 何开平[1] 

机构地区：[1]江汉石油管理局钻井工程处,湖北潜江一村433121

出　　处：《钻采工艺》2000年第5期4-7,共4页Drilling & Production Technology

摘　　要：设计一种新型防斜钻具组合 ,用静力学方法近似分析钻具组合力学特性 ,用半解析法解出了偏心短节偏心方向分别指向上、下井壁两个特殊点的钻头侧向力及转角 ,并结合底部钻具公转的运动特性 ,优化钻具组合及钻井参数 ,从而达到控制井斜的目的。在江汉 3个区块 7口井进行现场试验 ,取得良好的社会和经济效益。The paper presents a new inclining prevention BHA.The mechanical features of the BHA are analysed by using static mechanic method.Eccentric directions of eccentric junction are pointed to bit lateral pressure and corner of two special point in up and down sidewall,meanwhile,combines with movement property of bottom drilling tool revolution,and optimize BHA and drilling parameter,the aim of deviation control is got.By field testing of eccentric inclining prevention technique in 7 wells of Jianghan Oilfield,good economic benefit and social benefit are obtained.

关 键 词：偏心 防止井斜 力学模型 江汉油田 钻具组合 

分 类 号：TE22[石油与天然气工程—油气井工程]