利用井眼偏移量模式预测井眼轨道  

PREDICTION OF LATERAL SECTIONS OF A HORIZONTAL WELL WITH THE MODEL OF BOREHOLE DISPLACEMENTS

作　　者：齐林[1] 周大千 王新清[1] 邸百英 

机构地区：[1]大庆石油学院,大庆石油管理局

出　　处：《石油学报》1996年第2期95-105,共11页Acta Petrolei Sinica

基　　金：国家八.五重点攻关项目

摘　　要：根据多元幂积侧向切削理论模型和钻头岩石相互作用理论，给出了考虑地层因素、钻头切削破岩特性对钻头轴向力和侧向力的有效作用的综合影响，以及井深增量、钻头转速和井眼前进方向地层可钻性等因素的井眼偏移量计算模式。在理论和实验研究的基础上，编制了应用软件、理论成果和计算软件，已成功地用于大庆油田水平井井眼轨道控制中。结果表明把理论分析方法与实钻数理统计理论分析结合起来建立的计算模式是预测井眼轨道的有效方法。In the light of the theoretical model of multivariate power product of lateral cutting and the theory of bit-rock interaction,it is shown in the paper how an integrated effect can result from effective actions of the axial and lateral forces of bit taking account of the formation factors and the bit characteristics related to its mechanism of cutting and breaking rocks.Also shown is the calculation model of displacements of borehole resulting from the above effect together with factors such as the well depth increments,the bit rotating speed,the borehole headway direction,the formation drillability,etc.On the basis of theoretical and experimental studies,the application software has been developed.The theoretical achievements and the calculation software have been successfully applied to the lateral section control of horizontal wells in Daqing oilfield.The results showed that the calculation model developed on the basis of integration of the approach of theoretical analysis with mathematical statistical analysis on actual drilling cases is an effective way to predict the lateral sections of horizontal wells.

关 键 词：井眼轨迹 预测 井眼偏移量 钻井技术 

分 类 号：TE24[石油与天然气工程—油气井工程]