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公开(公告)号：US20200158907A1
公开(公告)日：2020-05-21
申请号：US16198117
申请日：2018-11-21
摘要： A method for transforming an earth formation and/or production equipment based on correcting nuclear magnetic resonance (NMR) data to account for partially water-saturated rock includes: receiving NMR logging data having echo-trains for an earth formation; inverting the echo-trains to provide transverse relaxation time constant (T2) distributions for various components of fluid in the earth formation; substituting a T2 distribution for mobile water of fully water-saturated rock for a T2 distribution for mobile water of partially water-saturated rock based on values of the mobile water T2 distribution of partially water-saturated rock and a total porosity constraint; summing the T2 distribution for mobile water of fully water-saturated rock and a T2 distribution for an immobile water component of the fluid to provide a T, distribution for fully water-saturated rock; and transforming the earth formation and/or the production equipment based on a parameter derived from the T2 distribution for fully water-saturated rock.
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公开(公告)号：US11092714B2
公开(公告)日：2021-08-17
申请号：US16198117
申请日：2018-11-21
摘要： A method for transforming an earth formation and/or production equipment based on correcting nuclear magnetic resonance (NMR) data to account for partially water-saturated rock includes: receiving NMR logging data having echo-trains for an earth formation; inverting the echo-trains to provide transverse relaxation time constant (T2) distributions for various components of fluid in the earth formation; substituting a T2 distribution for mobile water of fully water-saturated rock for a T2 distribution for mobile water of partially water-saturated rock based on values of the mobile water T2 distribution of partially water-saturated rock and a total porosity constraint; summing the T2 distribution for mobile water of fully water-saturated rock and a T2 distribution for an immobile water component of the fluid to provide a T2, distribution for fully water-saturated rock; and transforming the earth formation and/or the production equipment based on a parameter derived from the T2 distribution for fully water-saturated rock.
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公开(公告)号：US10761231B2
公开(公告)日：2020-09-01
申请号：US15883817
申请日：2018-01-30
申请人： Hao Zhang , Alberto Mezzatesta
发明人： Hao Zhang , Alberto Mezzatesta
IPC分类号： G06F11/30 , G01V1/30 , E21B7/06 , G01V1/50 , C09K8/62 , E21B49/00 , G01V99/00 , G01V1/28 , G01V5/10 , G01V3/08 , E21B43/00 , E21B44/00
摘要： Examples of techniques for generating a high-resolution lithology model for subsurface formation evaluation are disclosed. In one example implementation according to aspects of the present disclosure, a computer-implemented method includes determining, by a processing device, a low-resolution lithology volumetric model. The method further includes comparing, by the processing device, the low-resolution lithology volumetric model to a high-resolution imaging log. The method further includes calculating, by the processing device, a dynamic boundary curve for each of a plurality of moving windows. The method further includes generating, by the processing device, the high-resolution lithology model based at least in part on the calculated dynamic boundary curve for each of the plurality of moving windows. The method further includes controlling a drilling operation based at least in part on the high-resolution lithology model.
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公开(公告)号：US20190235109A1
公开(公告)日：2019-08-01
申请号：US15883817
申请日：2018-01-30
申请人： Hao Zhang , Alberto Mezzatesta
发明人： Hao Zhang , Alberto Mezzatesta
IPC分类号： G01V1/30 , E21B7/06 , G01V1/50 , C09K8/62 , E21B49/00 , G01V1/28 , G01V5/10 , G01V3/08 , G01V99/00
摘要： Examples of techniques for generating a high-resolution lithology model for subsurface formation evaluation are disclosed. In one example implementation according to aspects of the present disclosure, a computer-implemented method includes determining, by a processing device, a low-resolution lithology volumetric model. The method further includes comparing, by the processing device, the low-resolution lithology volumetric model to a high-resolution imaging log. The method further includes calculating, by the processing device, a dynamic boundary curve for each of a plurality of moving windows. The method further includes generating, by the processing device, the high-resolution lithology model based at least in part on the calculated dynamic boundary curve for each of the plurality of moving windows. The method further includes controlling a drilling operation based at least in part on the high-resolution lithology model.
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5.发明授权2-D inversion of multi-component induction logging data to resolve anisotropic resistivity structure 有权2-D反演多分量感应测井数据解析各向异性电阻率结构公开(公告)号：US06502036B2
公开(公告)日：2002-12-31
申请号：US09798120
申请日：2001-03-02
申请人： Zhiyi Zhang , Alberto Mezzatesta
发明人： Zhiyi Zhang , Alberto Mezzatesta
IPC分类号： G01V318
CPC分类号： G01V3/28
摘要： High Definition Induction Logging (HDIL) tools provide reliable information about the vertical and radial variations of resistivity structure in isotropic media. Focusing techniques provide quantitative information about resistivity variation and qualitative information about invasion at the well site. Coaxial alignment of transmitter-receiver arrays with the borehole prevents obtaining information about anisotropy in vertical wells, thereby greatly limiting the application of array induction tools in the characterization of reservoirs with finely laminated sand/shale sequences. A multi-component induction tool, 3DEX™, enables the detection of anisotropy in laminated reservoirs. Multi-component data are invert to give an estimate of vertical and horizontal resistivity in a vertical borehole. 3DEX™ may encounter difficulties in looking through an invaded zone and detecting the anisotropy in the formations. Joint inversion of HDIL and 3DEX™ data enables identification of parameters of the invaded zone as well as of the anisotropic formations.
摘要翻译： 高清晰度感应测井（HDIL）工具提供了有关各向同性介质中电阻率结构的垂直和径向变化的可靠信息。 聚焦技术提供有关电站变化和关于井场侵入的定性信息的定量信息。 发射器 - 接收器阵列与钻孔的同轴对准防止获得关于垂直井中的各向异性的信息，从而极大地限制阵列感应工具在具有精细层压的砂/页岩序列的储层的表征中的应用。 多组分感应工具3DEX TM能够检测层压储层中的各向异性。 反映了多组分数据，以估计垂直井眼中的垂直和水平电阻率。 3DEX TM可能在查看入侵区域和检测地层中的各向异性方面遇到困难。 HDIL和3DEX TM数据的联合反演能够识别入侵区域以及各向异性地层的参数。
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