公开(公告)号：US08191416B2

公开(公告)日：2012-06-05

申请号：US12276673

申请日：2008-11-24

申请人： Fikri Kuchuk ,  Terizhandur S. Ramakrishnan ,  Tarek M. Habashy ,  Ian Falconer ,  Saygi Gokhan ,  Edward Harrigan ,  Anthony Goodwin ,  Lawrence Leising ,  Fernando Mattos

发明人： Fikri Kuchuk ,  Terizhandur S. Ramakrishnan ,  Tarek M. Habashy ,  Ian Falconer ,  Saygi Gokhan ,  Edward Harrigan ,  Anthony Goodwin ,  Lawrence Leising ,  Fernando Mattos

IPC分类号： E21B47/10

CPC分类号： E21B49/008

摘要： An example instrumented formation tester for injecting fluids and monitoring of fluids described herein includes a downhole tool which can be deployed in a wellbore via a wireline or a drill string. The downhole tool may facilitate the injection of fluids into an underground formation, and the monitoring of the directions in which the injected fluids flow in the formation in an open hole environment. In particular, the downhole tool may be configured for removing the mud cake from a portion of the wellbore wall for facilitating a fluid communication with the formation to be tested.

摘要翻译： 用于喷射流体和本文所述的流体监测的示例性仪器地层测量仪包括井下工具，其可以经由钢丝绳或钻柱部署在井眼中。 井下工具可以促进将流体注入地下地层，以及监测注入的流体在露天环境中在地层中流动的方向。 特别地，井下工具可以被配置为从井筒壁的一部分去除泥饼，以便于与要测试的地层的流体连通。

公开(公告)号：US20100318337A1

公开(公告)日：2010-12-16

申请号：US12761368

申请日：2010-04-15

申请人： William J. Bailey ,  Benoit Couet ,  Nadege Hopman ,  Laurent Jammes ,  Hans Eric Klumpen ,  Gustavo Nunez ,  Terizhandur S. Ramakrishnan ,  Scott Trevor Raphael ,  Richard Torrens ,  Sandeep Verma

发明人： William J. Bailey ,  Benoit Couet ,  Nadege Hopman ,  Laurent Jammes ,  Hans Eric Klumpen ,  Gustavo Nunez ,  Terizhandur S. Ramakrishnan ,  Scott Trevor Raphael ,  Richard Torrens ,  Sandeep Verma

IPC分类号： G06G7/48

CPC分类号： E21B41/0064 ,  Y02C10/14

摘要： Methods, systems and apparatuses are provided for facilitating sequestration of naturally occurring or anthropogenic carbon dioxide. The methods, systems and apparatuses of the present invention include a software interface for facilitating an exchange of data among associated simulators which simulate various steps of the carbon sequestration process.

摘要翻译： 提供了用于促进天然存在或人为二氧化碳的封存的方法，系统和装置。 本发明的方法，系统和装置包括一个软件界面，用于促进相关联的模拟器之间的数据交换，其模拟碳固存过程的各个步骤。

公开(公告)号：US07753117B2

公开(公告)日：2010-07-13

申请号：US12098041

申请日：2008-04-04

申请人： Terizhandur S. Ramakrishnan ,  Nikita V. Chugunov ,  Andrew Duguid ,  John Tombari

发明人： Terizhandur S. Ramakrishnan ,  Nikita V. Chugunov ,  Andrew Duguid ,  John Tombari

IPC分类号： E21B47/00

CPC分类号： E21B47/0005

摘要： The permeability of the cement annulus surrounding a casing is measured by locating a tool inside the casing, placing a probe of the tool in contact with the cement annulus, measuring the change of pressure in the probe over time, where the change in pressure over time is a function of among other things, the initial probe pressure, the formation pressure, and the permeability, and using the measured change over time to determine an estimated permeability. The estimated permeability is useful in determining whether carbon dioxide can be effectively sequestered in the formation below or at the depth of measurement without significant leakage through the cement annulus.

摘要翻译： 通过将工具定位在壳体内部，将工具的探针放置在与水泥环面接触的位置，测量探头随时间变化的压力随时间的变化来测量壳体周围的水泥环的渗透性 是初始探针压力，地层压力和渗透率之间的函数，并且使用测量的随时间的变化来确定估计的渗透率。 估计的渗透率可用于确定二氧化碳是否可以有效地隔离在下方的地层或测量深度，而没有通过水泥环的显着泄漏。

公开(公告)号：US20090151559A1

公开(公告)日：2009-06-18

申请号：US11956414

申请日：2007-12-14

申请人： Sandeep Verma ,  Terizhandur S. Ramakrishnan

发明人： Sandeep Verma ,  Terizhandur S. Ramakrishnan

IPC分类号： B01D53/047 ,  B01D53/18

CPC分类号： E21B43/385 ,  B01D53/0423 ,  B01D53/047 ,  B01D2253/102 ,  B01D2253/108 ,  B01D2257/504 ,  B01D2258/06 ,  C10L3/10 ,  C10L3/102 ,  E21B43/164 ,  Y02C10/08 ,  Y02P90/70

摘要： Methods and systems are provided where a production gas stream including natural gas and carbon dioxide is separated downhole using dual reflux pressure swing adsorption with the natural gas being produced and the carbon dioxide being directed for downhole storage (sequestration).

摘要翻译： 提供了方法和系统，其中包括天然气和二氧化碳的生产气流在井下使用双重回流变压吸附与所生产的天然气并且二氧化碳被引导用于井下存储（隔离）。

公开(公告)号：US20080319726A1

公开(公告)日：2008-12-25

申请号：US12141805

申请日：2008-06-18

申请人： Johan Gerhard Berge ,  Terizhandur S. Ramakrishnan ,  Suzanne Jacqueline Hurter ,  Laurent Jammes ,  Y. Bilgin Altundas ,  Kamel Bennaceur ,  Murtaza Ziauddin

发明人： Johan Gerhard Berge ,  Terizhandur S. Ramakrishnan ,  Suzanne Jacqueline Hurter ,  Laurent Jammes ,  Y. Bilgin Altundas ,  Kamel Bennaceur ,  Murtaza Ziauddin

IPC分类号： G06G7/48

CPC分类号： E21B41/0064 ,  Y02C10/14

摘要： The invention relates to a method of performing a gas operation of an oilfield having a subterranean formation with at least one reservoir positioned therein. The method steps include modeling the gas operation of the oilfield using a multi-domain simulator by coupling a static model of the subterranean formation, a dynamic model of the subterranean formation, and a well model, wherein the multi-domain simulator comprises the static model, the dynamic model, and the well model, defining a development plan for the gas operation based on the modeling, and performing gas injection according to the development plan.

摘要翻译： 本发明涉及一种执行具有地下地层的油田的气体操作的方法，其中至少有一个储层位于其中。 所述方法步骤包括通过耦合地下地层的静态模型，地层的动态模型和井模型，使用多域模拟器对油田的气体运行进行建模，其中多域模拟器包括静态模型 ，动态模型和井模型，根据建模确定了天然气运行的发展规划，并根据发展规划进行注气。

公开(公告)号：US20080314582A1

公开(公告)日：2008-12-25

申请号：US11766534

申请日：2007-06-21

申请人： Ashok Belani ,  Tarek M. Habashy ,  Terizhandur S. Ramakrishnan ,  Fikri J. Kuchuk ,  Ramachandra G. Shenoy

发明人： Ashok Belani ,  Tarek M. Habashy ,  Terizhandur S. Ramakrishnan ,  Fikri J. Kuchuk ,  Ramachandra G. Shenoy

IPC分类号： E21B47/00

CPC分类号： G01V11/00

摘要： A downhole-reconfigurable tool string is utilized to obtain targeted measurements for formation evaluation and reservoir characterization. Tool string hardware and corresponding analysis software are dynamically adjusted to meet specific reservoir description needs identified during or before the logging run with the downhole-reconfigurable tool string. A technique for utilizing the downhole-reconfigurable tool string includes four different steps. The first step includes detecting first order features and identifying second order features. The second step includes enhancing measurements relative to the second order features by reconfiguring tool hardware to extract at least the desired information of the reservoir in terms of its static and dynamic properties, and software focusing to enhance the sensitivity to a particular reservoir attribute. The third step is performing an inversion to reconstruct the reservoir property as accurately as possible. The fourth step is using these properties and the planned production/injection data to recommend suitable monitoring schema.

摘要翻译： 利用井下可重构工具串来获得用于地层评估和储层表征的目标测量。 动态调整工具串硬件和相应的分析软件，以满足使用井下可重构工具串在日志记录期间或之前识别的特定油藏描述需求。 利用井下可重构工具串的技术包括四个不同的步骤。 第一步包括检测一阶特征并识别二阶特征。 第二步包括通过重新配置工具硬件来提高与二阶特征相关的测量，以根据其静态和动态属性提取储层的期望信息，以及集中于增强对特定储层属性的敏感性的软件。 第三步是尽可能准确地进行反演以重建储层特性。 第四步是使用这些属性和计划的生产/注入数据来推荐合适的监控模式。

公开(公告)号：US20080155958A1

公开(公告)日：2008-07-03

申请号：US11616591

申请日：2006-12-27

申请人： Terizhandur S. Ramakrishnan ,  Sandeep Verma ,  Wenlin Zhang ,  Philippe Lacour-Gayet ,  Muthusamy Vembusubramanian

发明人： Terizhandur S. Ramakrishnan ,  Sandeep Verma ,  Wenlin Zhang ,  Philippe Lacour-Gayet ,  Muthusamy Vembusubramanian

IPC分类号： F02G3/00 ,  F25J1/00

CPC分类号： F04D25/04 ,  F25J1/0022 ,  F25J1/0037 ,  F25J1/004 ,  F25J1/0045 ,  F25J1/0201 ,  F25J1/0229 ,  F25J1/0232 ,  F25J2260/80 ,  F25J2270/06 ,  Y02C10/14

摘要： A zero-emissions power plant receives natural gas from wells at elevated pressure and temperature. Gas is expanded through one or more turbo-expanders, preferably reformed, and sent to a fuel cell where electricity, heat, carbon-dioxide, and water are generated. The carbon-dioxide is compressed by at least one compressor and piped downhole for sequestration. The turbo-expanders have shafts which preferably share the shafts of the compressors. Thus, energy given up by the natural gas in the turbo-expanders is used to run compressors which compress carbon dioxide for downhole sequestration. In one embodiment, the natural gas is applied to heat exchangers in order to generate a stream of liquid natural gas. The remainder of the gas is expanded through the turbo-expanders and processed in the reformer prior to being sent to the fuel cell. A shifter may be used between the reformer and fuel cell. A solid oxide fuel cell is preferred.

摘要翻译： 零排放发电厂在高压和高温下从井中接收天然气。 气体通过一个或多个涡轮膨胀机膨胀，优选重整，并送到燃料电池，其中产生电，热，二氧化碳和水。 二氧化碳被至少一个压缩机压缩并通过井下管道进行封存。 涡轮膨胀机具有优选地共享压缩机的轴的轴。 因此，涡轮膨胀机中的天然气放弃的能量用于运行压缩二氧化碳进行井下隔离的压缩机。 在一个实施例中，将天然气施加到热交换器以产生液态天然气流。 气体的剩余部分通过涡轮膨胀机膨胀，并在被送入燃料电池之前在重整器中进行处理。 可以在重整器和燃料电池之间使用换档器。 固体氧化物燃料电池是优选的。

公开(公告)号：US07221158B1

公开(公告)日：2007-05-22

申请号：US11299985

申请日：2005-12-12

申请人： Terizhandur S. Ramakrishnan

发明人： Terizhandur S. Ramakrishnan

IPC分类号： G01V3/00

CPC分类号： G01V3/32 ,  G01N24/081

摘要： Permeability determinations are made from NMR measurements of a logging tool. The NMR measurements are used to find an observed critical spin—spin relaxation time which is used in conjunction with an in situ determination of surface relaxivity of a rock in order to generate permeability determinations.

摘要翻译： 通过测井工具的NMR测量进行渗透性测定。 NMR测量用于发现观察到的临界自旋 - 自旋弛豫时间，其与岩石的表面弛豫性的原位测定结合使用以产生渗透率测定。

公开(公告)号：US6061634A

公开(公告)日：2000-05-09

申请号：US843206

申请日：1997-04-14

申请人： Ashok Belani ,  Terizhandur S. Ramakrishnan ,  Tarek M. Habashy ,  Fikri John Kuchuk ,  Luis Ayestaran

发明人： Ashok Belani ,  Terizhandur S. Ramakrishnan ,  Tarek M. Habashy ,  Fikri John Kuchuk ,  Luis Ayestaran

IPC分类号： E21B49/00 ,  G06F19/00

CPC分类号： E21B49/008

摘要： Methods and apparatus for estimating values for formation parameters such as permeability, relative permeability, and skin factors for a plurality of locations in the formation are provided. Fluid is forced into a capped borehole at a measured rate, and a borehole logging tool is run in the borehole to measure indications of pressure and conductivity. Estimates of the parameters and the measured fluid flow rate(s) into the formation are used in conjunction with a jointly inverted pressure transient model and saturation-conductivity model in order to compute indications of expected pressure and indications of expected conductivity-related profiles as a function of depth and time. The expected pressures and expected conductivity related profile indications are then compared to the pressures and conductivity indications measured by the borehole logging tool, and an iterated comparison between the computed values and the measured values is used to provide determinations of the formation parameters. According to a preferred embodiment, the pressure transient model is for compressible flow and provides an estimated calculated fluid flow into the layers of the formation; the estimated calculated fluid flow being an input to the saturation-conductivity model which is for incompressible flow.

摘要翻译： 提供了用于估计地层参数的值的方法和装置，例如地层中的多个位置的渗透率，相对渗透率和皮肤因子。 流体以测量的速率被迫进入加盖的钻孔中，并且钻孔测井工具在钻孔中运行以测量压力和电导率的指示。 结合使用联合倒置压力瞬态模型和饱和电导率模型的参数估计和测量的流体流速进入地层，以计算预期压力的指示和预期的导电率相关曲线的指示为 深度和时间的功能。 然后将期望的压力和预期的导电率相关曲线指示与由钻孔测井工具测量的压力和电导率指示进行比较，并且使用计算值和测量值之间的迭代比较来提供地层参数的确定。 根据优选实施例，压力瞬变模型用于可压缩流动，并且向地层的层提供估计的计算流体流量; 估计的计算流体流量是用于不可压缩流动的饱和电导率模型的输入。

公开(公告)号：US6040696A

公开(公告)日：2000-03-21

申请号：US932141

申请日：1997-09-16

申请人： Terizhandur S. Ramakrishnan ,  Lawrence M. Schwartz ,  Edmund J. Fordham ,  William E. Kenyon ,  David J. Wilkinson

发明人： Terizhandur S. Ramakrishnan ,  Lawrence M. Schwartz ,  Edmund J. Fordham ,  William E. Kenyon ,  David J. Wilkinson

IPC分类号： G01R33/44 ,  G01R33/46 ,  G01V3/32 ,  G01V3/00

CPC分类号： G01V3/32 ,  G01R33/4625

摘要： In this invention a new interpretation methodology has been developed. A pore structure model is used to compute the relaxation behavior. This model is then used as the kernel of a best-fit inversion scheme against the measured data, in contrast to inverting for a T.sub.2 distribution that relies on regularization. Parameters of the model are obtained by "best fitting" the model with the data. The method considers a geometrical or physical model comprising both intergranular and intragranular porosity (microporosity). The NMR relaxation is computed by one of the several methods. The model is compactly represented by a set of physical parameters that are iterated upon until a match with relaxation data is obtained in the best fit sense. The result is obtained in terms of these physical parameters, and then integrated with other types of measurements.

摘要翻译： 在本发明中，已经开发了一种新的解释方法。 孔结构模型用于计算松弛行为。 然后将该模型用作针对测量数据的最佳拟合反演方案的核心，与依赖于正则化的T2分布的反转相反。 通过使用数据“最佳拟合”模型获得模型的参数。 该方法考虑了包括晶间和颗粒间孔隙度（微孔）的几何或物理模型。 通过几种方法之一计算NMR弛豫。 该模型通过重复的一组物理参数紧凑地表示，直到获得具有最佳拟合意义的松弛数据的匹配。 结果是根据这些物理参数获得的，然后与其他类型的测量结合。