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parameter constraint inversion
相关语句
  相似匹配句对
     METHOD OF PARAMETER CONSTRAINT ADJUSTMENT
     参数约束平差法
短句来源
     condition of constraint for deciding stagger parameter value;
     提出了决定参差参数取值的约束条件;
短句来源
     Constraint of Powers
     论权力制约
短句来源
     and b was empirical parameter.
     b为经验常数。
短句来源
     Scattering Parameter
     散射参数
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A technique of multiple parameters constraint inversion is presented in this paper. Its core is to obtain an approximate reflection coefficient or wave impedance section of higher resolution and broaded band using ample high frequency and complete low frequency information of known logging to make up for the lack of limited band width of real seismic recording by intervative inversion. Layers information are used in inversion to control signal noice ratio of section. The wave impedance...

A technique of multiple parameters constraint inversion is presented in this paper. Its core is to obtain an approximate reflection coefficient or wave impedance section of higher resolution and broaded band using ample high frequency and complete low frequency information of known logging to make up for the lack of limited band width of real seismic recording by intervative inversion. Layers information are used in inversion to control signal noice ratio of section. The wave impedance section obtained by width band logging constraint can be used directly to invert lithology parameters and provide more reliable seismic evidence for further lithology interpretation and lateral tracking, correlation and prediction of thin reservoirs.

多参数约束反演方法是利用已知测井资料丰富的高频信息和完整的低频信息来补充实际地震记录有限带宽的不足,通过迭代反演来求取一个具有较高分辨率和较宽频带的近似反射系数序列(或波阻抗序列).在反演中酌情加入层位信息以控制剖面的信噪比.由于该方法以宽频带的测井资料为约束,因此可直接利用所求得的优化了的波阻抗剖面来求取地层岩性等参数,为进一步进行岩性解释和薄储集层的横向追踪、对比、预测提供较可靠的地震依据

Applying the well-log-constraint inversion technology to the reservoir prediction effectively, the problems were pointed out in different sedimentary systems: (1)In the sandstone-mudstone interbed of fluvial facies in shallow layer, the environment corrections of acoustic log should be done to avoid the speed error leading by the soak of slurry. (2)In granule gravel reservoir of the alluvial facies,which contains carbonate,based on the geological model, the multi-wells and multi-parameters constraint...

Applying the well-log-constraint inversion technology to the reservoir prediction effectively, the problems were pointed out in different sedimentary systems: (1)In the sandstone-mudstone interbed of fluvial facies in shallow layer, the environment corrections of acoustic log should be done to avoid the speed error leading by the soak of slurry. (2)In granule gravel reservoir of the alluvial facies,which contains carbonate,based on the geological model, the multi-wells and multi-parameters constraint inversion are applied, and build the corresponding interpretation model to gained the exactitude data of the inversion (3)In the lacustrine system which the speed of reservoir is close to the wall rock, based on the acoustic impedance inversion,finding out the other well log (e. g. Natural gamma, apparent resistivity) to inverse, the resolving rate can be improved. (4)In the complicated carbonate rock reservoir of marine facies, being applied to the drill data, and selected the inversion means in which the well is the constraint main body, the result of inversion accord with geological condition can be achieved.

为了把测井约束反演技术真正有效地应用到储层预测中,针对不同类型沉积体系,提出了应注意的问题:①针对浅层河流相砂泥岩互层,必须做好测井资料的环境校正,以避免因泥浆浸泡而引起的速度差异;②对于含有碳酸盐岩的冲积扇相砂砾岩体,在建立地质模型的基础上,利用多井多参数约束反演,建立相应的解释模型,以克服反演结果的多解性;③在储层与围岩速度难以区分的湖相沉积体系中,应在波阻抗反演的基础上,找出能区分储层和围岩的其它测井曲线(如自然伽马、视电阻率等)进行反演,以提高分辨率;④在复杂的海相碳酸盐岩裂缝储层中,要以钻井资料为依据,选择以钻井为约束主体的反演方法,以达到反演结果与地质条件吻合的目的。

 
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