水平井油层钻遇率研究  

Drilling Ratio of Oil Zones in Horizontal Wells

作　　者：陈冬[1] 汪中浩[2] 李晓山[3] 王彦春[1] 

机构地区：[1]中国地质大学(北京)"地下信息探测技术与仪器"教育部重点实验室,北京100083 [2]长江大学地球物理与石油资源学院,湖北荆州434023 [3]新疆油田分公司油藏评价处,新疆克拉玛依834000

出　　处：《石油天然气学报》2008年第3期103-106,共4页Journal of Oil and Gas Technology

基　　金：中国石油天然气集团公司石油科技中青年创新基金项目(05E7047)

摘　　要：利用水平井开发薄砂岩油藏是提高产量和采收率的有效手段之一。针对水平井井眼轨迹与油藏的接触关系进行了深入研究,利用随钻测井的GR等测井曲线的变化特征来描述、指导井眼的钻进;应用最小曲率半径法来计算井眼轨迹并进行垂深校正。以塔里木盆地哈得4油田一口水平井为例,应用上述方法,对水平井段油层钻遇率进行了研究,以指导水平井开发,实际应用效果明显。研究认为,精确描述水平井井眼轨迹剖面和更多地使用实时地质导向工具是提高油层钻遇率的主要手段。Horizontal well production was one of effective means for improving production output in thin sandstone reservoirs.The correlation between the trajectory of horizontal wells and contact of reservoirs was studied.The characteristics of GR curve variation of MWD were used to describe and guide well drilling,the method of minimum curvature radius was deployed to calculate the trajectory and calibrate vertical depth.By taking a well in Hade 4 Oilfield in Tarim Basin for example.The stated method was used to study the drilling rate of horizontal sections for the purpose of guiding the horizontal-well-production,obvious application effect was obtained.The study shows that to accurately describe the trajectory and better use of geologic guiding tools is one of the principal means for improving the drilling rate.

关 键 词：水平井 钻遇率 井眼轨迹 垂深校正 

分 类 号：P631.84[天文地球—地质矿产勘探] TE243.2[天文地球—地质学]