准噶尔盆地石南地区白垩系储层地球物理方法识别  

Geophysical identification of Cretaceous reservoirs in the Shinan area,Junggar Basin

作　　者：李路路[1] 姜国宇 刘涛[1] 何岩 张永波[1] LI Lu-Lu;JIANG Guo-Yu;LIU Tao;HE Yan;ZHANG Yong-Bo(Luliang Oilfield Operation Area,PetroChina Xinjiang Oilfield Company,Karamay834000,China)

机构地区：[1]中国石油新疆油田公司陆梁油田作业区,新疆克拉玛依834000

出　　处：《物探与化探》2024年第2期334-341,共8页Geophysical and Geochemical Exploration

基　　金：中石油股份公司前瞻性基础性技术攻关项目“多类型储集体发育机制与储集能力定量评价技术研究”(2021DJ402)。

摘　　要：准噶尔盆地石南地区白垩系清水河组底砾岩中相继获得工业油流,但该套储层却具有多层系立体式含油及纵、横向变化大的特点,急需解决储层识别与精细刻画的难题。本文在精确地震地质层位标定的基础上,采用地震层位拉平残余厚度“三步法”恢复白垩系清水河组一段古地貌,结合自然伽马拟声波储层预测,基本查明了沉积的主控因素及砂体空间展布特征。研究成果为石南地区白垩系储层预测提供了有效的方法组合,为白垩系清水河组砂砾岩油气藏的油气勘探提供了充分的科学依据,可有效降低勘探风险。Industrial oil flows have been successively obtained from the basal conglomerates of the Cretaceous Qingshuihe Formation in the Shinan area,Junggar Basin.However,this set of reservoirs exhibits multi-layer three-dimensional oil-bearing properties and significant vertical and horizontal variations.Therefore,there is an urgent need to overcome the challenge of the identification and fine-scale characterization of reservoirs.Based on the accurate calibration of seismic and geological horizons,this study reconstructed the paleogeomorphology of the first member of the Cretaceous Qingshuihe Formation using based on the seismic flattening and residual thickness methods in three steps.By combining the reservoir prediction through natural gamma-ray pseudo-acoustic wave inversion,this study roughly identified the predominant factors controlling sedimentation and the spatial distributions of sand bodies.The results of this study provide an effective method combination for predicting Cretaceous reservoirs in the Shinan area.Furthermore,these results offer a sufficient scientific basis for oil and gas exploration in the glutenite reservoirs of the Cretaceous Qingshuihe Formation,thus effectively reducing the exploration risk.

关 键 词：三维地震资料 古地貌 拟波阻抗储层预测 油气勘探 准噶尔盆地 

分 类 号：P631.4[天文地球—地质矿产勘探]