松辽盆地古X井区地震资料连片处理技术研究

发布时间：2018-05-02 20:40

本文选题：古X井区 + 三维连片处理　；参考：《东北石油大学》2017年硕士论文

【摘要】：随着油气田勘探开发程度的不断提高,地震勘探方式逐渐向区域大面积勘探的形式转变。目前,针对目标区的三维地震勘探已基本覆盖各主力产油区,因此对现有的三维地震资料进行连片处理,不仅可以避免大量的重复勘探成本投入,又能实现对大区域地质规律的统一认识,进一步满足油田开发的地质需求,具有重要意义。古X井区位于松辽盆地古龙凹陷,是大庆油田西部外围地区重要的增储上产潜力区。该区自90年代开始进行三维地震勘探,并完成了各自目标区单块的处理及解释研究。随着大庆油田勘探开发的不断深入,目前的处理及解释成果已经不能满足油气开发的地质需要。本次在古X井区针对目标层进行三维老资料叠前连片重新处理研究,地震资料连片处理区块由三个地震采集工区组成,其中包括1995年采集的LN三维工区、2003年采集的TLH三维工区、2012年采集的PXB三维工区。由于采集施工年度跨度大,区块间以往处理成果在采集因素、信噪比、波形、能量等方面差异大,难以进行地质规律整体研究。本次在研究区开展三维地震连片处理技术研究应用,应用微测井静校正和折射波层析静校正组合的静校正技术、叠前综合保真去噪、振幅一致性调整,分步地表一致性反褶积、子波整形、叠前时间偏移等技术,形成一套适合该区的连片处理技术,为区域构造的准确落实以及沙体检测和储层识别提供了有利条件。
[Abstract]:With the improvement of exploration and development of oil and gas fields, the seismic exploration mode is gradually changing to the form of large area exploration. At present, the 3D seismic exploration in the target area has basically covered the main oil-producing areas, so the existing 3D seismic data can not only avoid a large amount of repeated exploration cost investment, but also can be processed in a continuous slice. It is of great significance to realize the unified understanding of regional geological laws and to further meet the geological requirements of oilfield development. Gu-X well area is located in the Gulong sag of Songliao Basin and is an important area of increasing reservoir and producing potential in the western periphery of Daqing Oilfield. Three dimensional seismic exploration has been carried out in this area since 1990's, and the processing and interpretation of single block in each target area have been completed. With the deepening of exploration and development in Daqing Oilfield, the present processing and interpretation results can not meet the geological needs of oil and gas development. In this paper, the 3-D old data prestack continuous slice reprocessing research was carried out in GuX well area. The seismic data link processing block consists of three seismic acquisition working areas. It includes LN 3D work area collected in 1995, TLH 3D work area collected in 2003 and PXB 3D work area collected in 2012. Because of the large span of acquisition construction and the great differences in acquisition factors, signal-to-noise ratio, waveform, energy and so on, it is difficult to study the geological law as a whole. The research and application of 3D seismic processing technology in the study area is carried out. The static correction technology of microlog statics and refraction wave tomography statics combination is applied to pre-stack comprehensive fidelity de-noising, amplitude consistency adjustment, stepwise surface consistent deconvolution. Wavelet shaping, prestack time migration and other techniques have formed a set of continuous processing techniques suitable for the area, which provides favorable conditions for the accurate implementation of regional structures, sand body detection and reservoir identification.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P631.44

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