三维地质建模技术在水平井地质导向中的应用——以鄂尔多斯盆地苏里格气田X3-8水平井整体开发区为例  

The application of 3D geological modeling technology in horizontal well geologic steering:A case from X3-8 horizontal well development zone

作　　者：庞强[1] 冯强汉[1] 马妍 张昱煜[1] 彭雪花[1] 

机构地区：[1]中国石油长庆油田分公司第三采气厂,内蒙古乌审旗017300 [2]中国石油长庆油田分公司第十一采油厂,甘肃西峰745000

出　　处：《天然气地球科学》2017年第3期473-478,共6页Natural Gas Geoscience

摘　　要：鄂尔多斯盆地苏里格气田上古气藏由于特有的沉积微相类型及演化特征,区内储层薄而分散,储层非均质性强,地质条件相对复杂,其为后期实际开发带来了很大的困难。水平井作为解决苏里格气田开发的有效手段,目前已在气田大规模推广应用。为更好地提高水平井地质导向效果及质量,提出三维地质建模技术与传统水平井地质导向技术相结合的思路,并应用随钻GR数据验证分析,以期更好地提升水平井地质导向技术的精确度以及成功率,并增加有效储层的钻遇率。X2区块X1-8H1水平井应用三维地质导向技术,实际完钻水平段长度800m,砂岩钻遇率达78.8%,有效储层钻遇率达59.5%,后期采取水力喷射压裂的改造方式后,取得了显著的开发效果。现场应用实践表明,三维水平井地质导向技术对苏里格气田钻井实施及后期改造有着重要的指导与借鉴意义。Due to the typical sedimentary microfacies and its evolution features of Upper Paleozoic gas reservoir in Sulige gas field,the reservoir is thin and dispersal.The strong heterogeneity of reservoir and relative complex geological condition cause the late greater difficulty of development.Horizontal well as the effective means to develop Sulige Gasfield,it has been applied as large-scale promotion in Sulige.In order to improve the effect and quality of horizontal well geologic steering,this paper used 3D geological modeling technology,combining traditional horizontal well geo-steering technology,applying the analysis of the LWD GR data validation,finally improved the accuracy and success rate of horizontal well geologic steering technology and increased the drilling rate of effective reservoir better.With 3D geologic steering technology in X1-8H1,it obtained sandstone drilling rate of 78.8% and effective reservoir drilling rate of 59.5%,and made great development effects combined with the late hydraulic jet fracturing,which has important guiding and reference significance in drilling implementation and late-reformation in Sulige Gasfield.

关 键 词：苏里格气田 水平井地质导向技术 三维地质建模 随钻GR 

分 类 号：TE19[石油与天然气工程—油气勘探]