Evaluation ofthe Special Reprocessing of3D Seismic Data andIts Applicationto Reservoir Prediction in Southwest Ordos Basin: Take DF Well Area as an Example
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摘要:
随着油田勘探开发的深入及地震处理解释技术的进步，对老三维地震资料二次攻关处理是挖资料潜力的主要途径。如何定量或者定性评价黄土塬这种特殊地震地质条件下三维地震资料二次攻关处理效果是资料处理的难题之一。通过对资料解释和储层预测的精度对比，对处理流程和效果进行了分析，建立一套相对可靠的三维地震资料二次攻关处理评价流程，为后续开展类似攻关处理资料评价建立模板，并开展新老三维地震资料储层预测效果的对比分析，进一步证明了黄土塬区三维地震重新处理的必要性及有效性。
Abstract:With the progress of oilfield exploration and development as well as the progress in seismic processing and interpretation technology, special processing of the old 3D seismic data becomes more important to tap data potential. However, to quantitatively or qualitatively evaluate the special processed data in the loess plateau remains a difficult problem. Through precise correlation of interpreted data and reservoir prediction, based on the analyses of the process and results, we established a relatively reliable technical flowchart for the data special processing and evaluation. Templates are established for subsequent similar data processing and evaluation. Results suggest that it is critical important to carry out the special reprocessing and correlation of the old and new 3D seismic data for reservoir prediction, in particular for the region as the loess plateau.
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表 1 DF井区直井合成记录与井旁地震道相关性统计
Table 1. Correlation between synthetic records of straight well and seismic tracks in the well area of DF42-55
钻井 攻关前资料 攻关后资料 直罗组-延长组底井旁道主频 直罗组-延长组底合成记录相关度 目标层段合成记录相关度 直罗组-延长组底井旁道主频 直罗组-延长组底合成记录相关度 目标层段合成记录相关度 DF11 37 77 65 24 58 81 F32 2 0 7 4 6 2 DF33 36 70 73 24 83 87 DF42 35 55 58 32 41 59 DF43 42 61 72 34 49 67 DF51 42 57 61 30 76 86 DF52 32 62 61 33 37 56 DF53 36 82 83 25 77 81 DF55 34 72 75 20 73 85 DF56 43 67 75 21 78 79 DF58 44 57 65 24 55 64 DF67 40 92 86 35 72 80 DF68 33 63 75 30 64 72 DF69 34 77 85 32 59 75 DF83 38 87 87 24 77 80 DF91 44 69 74 28 68 73 DF118 33 62 61 28 54 74 DF120 43 63 75 20 85 80 DF121 37 79 82 24 66 75 DF133 39 61 75 20 44 60 合计(平均) 38.2 65.6 67 26.6 64.6 72 
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