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METHOD FOR EVALUATING OIL AND GAS BEARING CAPACITY OF STRATA

机译:地层油气承载力评价方法

摘要

FIELD: geophysical research, in particular, seismic research conducted during search for hydrocarbons, possible use for finding and surveying locations of hydrocarbons of any origin.;SUBSTANCE: in the method for evaluating oil and gas bearing capacity of strata, which includes recording seismic oscillations in low frequency range from several receivers, positioned at a certain distance from each other, the recording is positioned for all measured components, the results are analyzed to detect presence of information signal emitted by productive bed, the presence and productivity of a formation are evaluated on basis of change of spectral power of information signal, micro-seismic filming is performed at promising sections within range from 0,5 to 20 Hz with usage of two systems of wide range vertical sensors of shifting speeds, where one of the systems, positioned in stationary manner on support station (platform), conducts continuous recording of micro-seismic field and evens out the level of seismic records at processing stage to take the changing micro-seismic conditions into consideration, the second system of broad-range seismic sensors in form of a spatial group moves successively from the first one for distance from 750 to 2,5 kilometers across all marked measurement points, which include parametric observation points (not less than 5-6), which are positioned closely to wells with known oil-bearing capacity parameters, on basis of results of measurement processing at parametric points, correlation dependence is determined between intensity of deep micro-seismic emission and total thicknesses of oil-saturated formations, frequency scanning method is used to process micro-seismic scanning data, intensity of deep micro-seismic radiation is evaluated in all points of observation and on basis of produced correlation dependence for parametric points, total oil-saturated thicknesses of oil and gas bearing strata are predicted.;EFFECT: increased precision when determining productivity and oil and gas bearing strata with evaluation of their total thickness.;3 dwg
机译:领域:地球物理研究,尤其是在寻找碳氢化合物期间进行的地震研究,可能用于查找和调查任何来源的碳氢化合物的位置。;实质:在评估地层油气承载力的方法中,包括记录地震振荡在几个接收器的低频范围内,彼此间隔一定距离,对所有测量的组件定位记录,分析结果以检测生产床发出的信息信号的存在,评估地层的存在和生产率根据信息信号频谱功率的变化,使用两个变速范围大范围垂直传感器的系统,在0.5至20 Hz范围内的有希望的部分进行微震拍摄,其中两个系统中的一个位于在支撑台(平台)上以固定方式进行,连续记录微地震场,并使处理阶段的地震记录级别,以考虑到不断变化的微地震条件,第二个以空间群形式存在的宽范围地震传感器系统从第一个系统开始连续移动,距离从750公里到2.5公里标记的测量点(包括参数观察点(不少于5-6个))位于具有已知含油量参数的井附近,根据在这些参数点进行的测量处理结果,确定强度之间的相关性。深微震辐射和油饱和地层的总厚度,使用频率扫描方法处理微震扫描数据,在观察的所有点并基于对参数产生的相关性,对深微震辐射的强度进行评估点,可预测含油气层的总饱和油厚度。效果:确定时提高了精度评估其总厚度,从而提高生产率和油气承载层。3dwg

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