利用地震建模一体化技术提高水平井设计质量  

Improving the Design Quality of Horizontal Wells by Integrated Seismic ModelingTechnology

作　　者：钟张起 赵志勇 连捷 朱利君[1] 鞠秀叶 ZHONG Zhangqi;ZHAO Zhiyong;LIAN Jie;ZHU Lijun;JU Xiuye(Pudong Oil Production Plant,Sinopec Zhongyuan Oilfield Company,Puyang,Henan 457001,China)

机构地区：[1]中国石化中原油田分公司濮东采油厂,河南濮阳457001

出　　处：《石油工业技术监督》2024年第8期43-47,57,共6页Technology Supervision in Petroleum Industry

摘　　要：为了提高低丰度油藏的储量动用水平,中原油田加大了水平井投资力度。利用常规地震数据方法进行水平井设计不能满足低丰度油藏的开发要求,为了提高水平井油层钻遇率,利用地震建模一体化技术来提高水平井设计质量。统计濮东采油厂26口水平井数据,水平井油层钻遇率平均为33.6%,油层钻遇率不仅较低,而且波动很大。地震剖面的波形显示模式缺点是构造解释精度相对较低,这是导致水平井油层钻遇率低的主要原因之一。水平井设计中容易出现二维和三维构造存在矛盾,地震数据和建模数据存在矛盾,单纯的等值线内插法并不能提高构造解释的精度,经常出现油层追踪失败的现象。利用地震建模一体化技术,设计Q58-P1水平井,在位图显示模式下,沿地震面进行了层面追踪和断层追踪,重新修正数据并建立了Q101断块的构造模型和属性模型。对101断块进行了地质储量的敏感性和不确定性分析,通过经济评价,符合钻井要求。2023年,濮东采油厂已实施水平井2口,水平井油层钻遇率为73.9%,初期日产油15.5t,是新投直井或斜井产能的3倍,取得了显著的增油效果。In order to improve the reserve utilization level of low abundance reservoir,Zhongyuan Oilfield has increased the horizontal well investment.Conventional seismic data method for horizontal well design cannot meet the development requirements of low abundance reservoir.In order to improve the drilling rate of horizontal wells,integrated seismic modeling technology is needed to improve the quality of horizontal well design.According to the data of 26 horizontal wells in Pudong oil production plant,the average drilling rate of horizontal wells is 33.6%,which is not only low,but also fluctuates greatly.The weakness of the waveform display mode of seismic section is that the accuracy of structural interpretation is relatively low,which is one of the main reasons for the low drlling rate of horizontal wells.In horizontal well design,there are contradictions between 2D and 3D structures,and between seismic data and modeling data,so the simple isoline interpolation method cannot improve the accuracy of structural interpretation,and the phenomenon of reservoir tracking failure often occurs.Horizontal Wells Q58-P1 were designed by using integrated seismic modeling technology,and in the bitmap display mode,plane tracing and fault tracing were carried out along the seismic plane,and the data were revised and the structural model and attribute model of Q101 fault block were established.The sensitivity and uncertainty analysis of the geological reserves of block 101 was carried out,and through economic evaluation,it meets the drilling requirements.In 2023,Pudong Oil Production plant has implemented 2 horizontal wells,the drilling rate of horizontal wells is 73.9%,and the initial daily oil production is 15.5 t,which is 3 times the production capacity of new vertical wells or inclined wells,and has achieved remarkable oil increase effect.

关 键 词：油田开发 地震建模一体化技术 水平井设计 油层钻遇率 

分 类 号：TE243[石油与天然气工程—油气井工程]