中国石油物探主体技术进展与展望OA

Over the past two decades,CNPC has faced multiple challenges in its oil and gas exploration and development,such as high exploration degree of shallow and middle layers,quality degradation of newly discovered reserves,continuously declining development benefit of mature oil and gas fields,and significantly increased reliance of complex exploration and development targets on geophysical exploration technologies.In this situation,high-precision geophysical exploration technology and high-quality seismic data grows into the key to bottleneck breakthrough.Taking the development and engineering application of CNPC's geophysical exploration technologies as the research object,this paper systematically reviews the research advancements of geophysical exploration technologies in the three major domains of"dual-complexity"structure,subtle lithological reservoir and mature oilfield development,and then predicts the development prospects of core geophysical exploration technologies for foreland thrust belts,deep and ultradeep reservoirs,subtle oil and gas reservoirs,unconventional oil and gas,and oil and gas development.The following results are obtained.First,the core geophysical exploration technologies that CNPC has developed include"broadband,wide-azimuth,high-density"(BWH)seismic acquisition+true-surface full depth seismic imaging,"broadband,wide-azimuth,high-density,high-fidelity"(BWHH)seismic acquisition+high-resolution,high-fidelity seismic data processing+quantitative reservoir prediction,and surface-borehole joint seismic acquisition+collaborative seismic imaging and processing.Second,these technologies have been extensively applied in the oil and gas exploration and development across the Tarim,Junggar,Ordos,Sichuan,Songliao and Bohai Bay Basins.They have effectively improved the SNR and resolution of seismic data,the imaging accuracy of complex structures,and the characterization capability of complex reservoirs,and have provided robust technical support for major exploration deployment,development plan adjustment,and geology-engineering integration,making outstanding contributions to CNPC's high-level reserve growth and steady production increase.Third,the future development of geophysical exploration technologies shall focus on foreland thrust belts,deep and ultradeep reservoirs,subtle oil and gas reservoirs,unconventional oil and gas,and oil and gas development.In conclusion,the research results can point out the development directions of domestic geophysical exploration technologies.To meet the new demands of oil and gas exploration and development in the new situations during the 15th Five-Year Plan,CNPC will mainly develop the next generation of geophysical exploration technologies such as intelligent geophysical exploration,surface-borehole integrated seismic imaging and inversion,and reservoir geophysics,focusing on the digital,intelligent and quantitative development.