基于地质模型更新的水平井井眼位置优化  

OPTIMIZATION OF HORIZONTAL BOREHOLE LOCATION BASED ON THE UPDATED GEOLOGICAL MODEL

作　　者：张继军[1] 李黔[1] 梁海波[1] 江川[1] 李建民[1] 周新宇[1] 钟水清[2] 孙凯[3] 

机构地区：[1]西南石油大学 [2]中国石油西南油气田公司 [3]中原石油勘探局钻井一公司

出　　处：《钻采工艺》2011年第3期4-5,112,共2页Drilling & Production Technology

基　　金："十一五"国家科技重大专项大型油气田及煤层气开发项目(编号:2008ZX05061)的部分研究成果

摘　　要：利用LWD曲线实时评价地层,可以确保水平井井眼在储层中的有效延伸,提高钻遇率。针对传统钻井方式是以靶点确定井眼位置,很难保证水平井井眼在储层内有效延伸,为此,阐述了一种在钻井过程中实时更新地质模型优化水平井井眼位置的新方法。该方法依据从邻井资料建立的水平井地质模型构造出沿着设计井眼轨迹的LWD标准模拟曲线,利用模拟曲线与实测曲线的对比结果评价地质构造并相应更新地质模型并进行图形可视化显示,为优化水平井井眼位置提供依据。实例分析表明,该方法在优化水平井井眼位置提高钻遇率方面效果明显,具有现场应用价值。Real-time evaluating the stratum by the using LWD (Logging While Drilling) curve could ensure horizontal borehole extend effectively in the reservoir bed and improve rate of drilling. The traditional drilling approach defined boreholes location by the target, which was difficult to ensure extension of horizontal borehole within the reservoir. A new method of optimizing horizontal borehole location which is real time updating geological model was presented in the drilling process. Through contradistinction of the LWD simulated curve and the measured curve, the real-time geologic structure was evaluated, and the geological model was updated, which provided the reference for optimizing horizontal borehole location. The field application results showed that the effect of the method was obvious in optimizing borehole location and raising the drilling footage, and it was worth popularizing and applying.

关 键 词：水平井 可视化 地质模型 LWD模拟曲线 

分 类 号：TE243[石油与天然气工程—油气井工程]