普光气田地层自然造斜规律统计分析  

STATISTICAL ANALYSIS OF NATURAL STRATIGRAPHIC DEFLECTING LAW IN PUGUANG GAS FIELD

作　　者：董世明[1] 王志远[2] 王宠[1] 刘明国[2] 刘匡晓[2] 

机构地区：[1]四川大学建筑与环境学院 [2]中国石化中原油田钻井工程技术研究院

出　　处：《天然气工业》2008年第4期74-75,共2页Natural Gas Industry

基　　金：中国石化集团公司“川东北先导试验”项目(编号:GCQ-07-ZS-0017)的资助

摘　　要：分析和掌握地层自然造斜规律可以避免不必要的浪费和井下复杂事故的发生，对提升钻井技术水平、降低钻井成本具有非常重要的意义。运用数理统计的方法对普光气田地层自然造斜规律进行了统计分析。结果表明，普光气田的北部、中部和西部的地层自然造斜规律按照其地理位置的不同可分为3个组别。这3个组别的地层自然造斜方向虽不相同，但基本都为地层上倾方向。进一步分析表明，须家河组以上的地层自然造斜方向为300°，雷口坡组及其以下的地层自然造斜方向为170°～200°。To investigate and master the natural stratigraphic deflecting law can avoid unnecessary waste and reduce downhole accidents,which is significant for improving drilling performance and decreasing drilling cost.The statistical method has been used to analyze the formation deflecting law in the Puguang gas field.The analysis results show that the natural stratigraphic deflecting law can be divided into three groups in the Puguang gas field,i.e.,northern,middle and western parts.Although the deflecting directions are different from each other in three parts,the deviation directions are basically perpendicular to stratum tendency directions.Further analysis also shows the natural stratigraphic deflecting direction is about 300° above the formation of Xujiahe Fm,and about 170°-200° in Leikoupo Fm and even in the formations below in the Puguang gas field.

关 键 词：普光气田 地层 定向井 丛式井 自然造斜规律 轨迹 统计分析 

分 类 号：TE21[石油与天然气工程—油气井工程]