摘要
美国的页岩油气革命深刻影响和重塑了世界油气行业的战略版图,中国陆相页岩油也获得突破性进展。中国陆相页岩油的特殊性与复杂性使物探工作面临巨大挑战。中国陆相页岩油具有“甜点”层段厚度小、岩相复杂等特点,页岩油的产出与页岩纹层发育等因素密切相关,“甜点”要素的预测方法仍不成熟。在分析陆相页岩夹层型、混积型、纯页岩型油藏基本地质特征的基础上,探讨了陆相页岩油物探技术需求及技术对策。强调了物探资料采集、资料处理、偏移成像的基础作用,指出应大力发展既可以提高物探采集效率又能满足页岩油“甜点”预测需求的地震采集新技术,强调了在资料处理与反演等环节应充分发展并应用各向异性的理论和方法。考虑到岩石物理分析的基础性作用,指出应加强数字岩石物理技术的研究与应用。基于页岩油藏“甜点”要素的地震参数响应复杂,且与弹性参数关系复杂的事实,提出应加大人工智能技术在页岩“甜点”预测中的应用研究。
The American shale oil exploration and development revolution has fundamentally influenced and rebuilt the strategic structure of world oil and gas industry.China has also made breakthroughs in lacustrine shale oil exploration and development.Lacustrine shale oil reservoirs in China feature low sweet spot thickness and complex rock facies.The unique characteristics and complexity of Chinese lacustrine shale oil posed great challenges to the application of seismic exploration.The richness of lamina and other factors of the sweet spot are difficult to predict as the prediction methods are still underdeveloped.In this study,under the condition that the seismic data quality satisfies the requirements for efficient reservoir development and based on the analysis of the basic geological characteristics of lacustrine shale oil reservoirs,seismic technical requirements and seismic technology countermeasures for three different types of shale oil reservoirs(inter layer,hybrid sediment and shale)are discussed.The fundamental role of seismic data acquisition,seismic data processing and seismic imaging is emphasized,and it shows that new seismic acquisition technologies that can both enhance the efficiency of seismic acquisition and meet the technical requirements of exploration should be applied further.We propose that the anisotropy should be taken into account in seismic processing and inversion.The fundamental functions of seismic rock physics are stressed and future development directions are pointed out.As seismic responses of sweet spots are complex and relationships between sweet spot factors and elastic properties are complicated,it is suggested that artificial intelligence should play a more important role in sweet spot predictions.
作者
赵殿栋
ZHAO Diandong(Sinopec Petroleum Exploration and Production Research Institute,Beijing 102206,China)
出处
《石油物探》
CSCD
北大核心
2022年第6期963-974,共12页
Geophysical Prospecting For Petroleum
基金
中国石化科技攻关项目“准东地区二叠系非常规甜点预测技术研究”课题(P21007)资助。
