Methods and systems to estimate wellbore events
    1.
    发明授权
    Methods and systems to estimate wellbore events 有权
    估计井眼事件的方法和系统

    公开(公告)号:US08457897B2

    公开(公告)日:2013-06-04

    申请号:US12680867

    申请日:2008-10-31

    申请人: Owen J Hehmeyer

    发明人: Owen J Hehmeyer

    IPC分类号: G01V3/18 G06F17/18

    CPC分类号: G01V1/40 E21B44/00

    摘要: A method and system for estimating the status of a production well using a probability calculator and for developing such a probability calculator. The method includes developing a probability calculator, which may be a Bayesian network, utilizing the Bayesian network in a production well event detection system, which may include real-time well measurements, historical measurements, engineering judgment, and facilities data. The system also includes a display to show possible events in descending priority and/or may trigger an alarm in certain cases.

    摘要翻译: 一种使用概率计算器估计生产井的状态并用于开发这样的概率计算器的方法和系统。 该方法包括在生产井事件检测系统中利用贝叶斯网络开发可能是贝叶斯网络的概率计算器,其可以包括实时井测量,历史测量,工程判断和设施数据。 该系统还包括一个显示器,以显示降序优先的可能事件和/或在某些情况下触发警报。

    Method of Distributing A Viscosity Reducing Solvent To A Set of Wells
    3.
    发明申请
    Method of Distributing A Viscosity Reducing Solvent To A Set of Wells 有权
    向一套井分配粘度降低溶剂的方法

    公开(公告)号:US20110295771A1

    公开(公告)日:2011-12-01

    申请号:US13084256

    申请日:2011-04-11

    IPC分类号: E21B43/16 G06Q90/00

    CPC分类号: E21B43/16 G06Q99/00

    摘要: Described are methods of distributing a viscosity reducing solvent to a set of wells terminating in an underground oil reservoir where the variation in the net solvent injection rate is minimized. The net solvent injection rate is the difference between the total solvent injection rate and the total solvent production rate from the set of wells, for example on an instantaneous or daily rate basis. Minimizing this variation can reduce costs associated with surface solvent storage, subsurface solvent storage, and solvent supply, since solvent supply often is least expensive when supplied at near a fixed rate. One option is to operate well pairs and to inject solvent into one well of the pair while producing oil and solvent from the other well of the pair. These methods are particularly useful in solvent-dominated, cyclic or non-cyclic, viscous oil recovery processes.

    摘要翻译: 描述了将减粘溶剂分配到终止于地下储油室中的一组井,其中净溶剂喷射速率的变化最小化的方法。 净溶剂注入速率是从一组孔中的总溶剂注入速率和总溶剂生产速率之间的差异,例如以瞬时或每日速率为基础。 最小化这种变化可以降低与表面溶剂储存,地下溶剂储存和溶剂供应相关的成本,因为当以接近固定速率供应时,溶剂供应通常是最便宜的。 一个选择是操作井对,并将溶剂注入到一对井中,同时从该井的另一个井中产生油和溶剂。 这些方法在以溶剂为主的,循环的或非循环的粘稠油回收方法中特别有用。

    Method of Enhancing the Effectiveness of a Cyclic Solvent Injection Process to Recover Hydrocarbons
    5.
    发明申请
    Method of Enhancing the Effectiveness of a Cyclic Solvent Injection Process to Recover Hydrocarbons 审中-公开
    提高循环溶剂注入工艺有效回收碳氢化合物的方法

    公开(公告)号:US20140034305A1

    公开(公告)日:2014-02-06

    申请号:US14110403

    申请日:2012-03-09

    IPC分类号: E21B43/16

    CPC分类号: E21B43/16 C09K8/58 C09K8/594

    摘要: Described is a method of operating a cyclic solvent-dominated recovery process (CSDRP) for recovering viscous oil from a subterranean reservoir of the viscous oil to enhance recovery effectiveness. The cyclic solvent process involves using an injection well to inject a viscosity-reducing solvent into a subterranean viscous oil reservoir. Reduced viscosity oil is produced to the surface using the same well used to inject solvent. The process of alternately injecting solvent and producing a solvent/viscous oil blend through the same wellbore continues in a series of cycles until additional cycles are no longer economical. Conventionally, the solvent composition remains constant over time within each injection cycle and among cycles. In the present method, by contrast, the solvent composition is varied over time thereby providing operational benefits as described herein.

    摘要翻译: 描述了一种操作循环溶剂主导的回收方法(CSDRP)的方法,用于从粘性油的地下储层中回收粘性油以提高回收效率。 循环溶剂方法包括使用注入井将降粘剂溶剂注入到地下粘性油储层中。 使用与注入溶剂相同的孔,向表面产生降粘性油。 交替注入溶剂并通过同一井筒生产溶剂/粘稠油混合物的过程继续进行一系列循环,直到额外的循环不再经济。 通常,溶剂组成在每个注射循环和循环之间随时间保持恒定。 在本方法中,相比之下,溶剂组成随时间而变化,从而提供如本文所述的操作益处。

    Solvent Separation In A Solvent-Dominated Recovery Process
    6.
    发明申请
    Solvent Separation In A Solvent-Dominated Recovery Process 有权
    溶剂主导回收过程中的溶剂分离

    公开(公告)号:US20110198091A1

    公开(公告)日:2011-08-18

    申请号:US12987714

    申请日:2011-01-10

    IPC分类号: E21B43/00

    CPC分类号: E21B43/25 C09K8/58 E21B43/40

    摘要: In solvent-dominated recovery processes for recovering In situ oil, including bitumen, the produced fluid stream includes oil and solvent. The solvent is preferably recovered and reinjected into the reservoir. In previously described methods, solvent is removed from the oil/solvent mixture. In the present method, the oil/solvent mixture is first separated into a heavier stream and a lighter stream from which solvent is independently removed.

    摘要翻译: 在用于回收原位油(包括沥青)的以溶剂为主的回收方法中,所产生的流体流包括油和溶剂。 溶剂优选回收并重新注入储存器。 在先前描述的方法中,从油/溶剂混合物中除去溶剂。 在本方法中,首先将油/溶剂混合物分离成更重的物流和较轻的流,从其中独立地除去溶剂。

    Methods and Systems To Estimate Wellbore Events
    7.
    发明申请
    Methods and Systems To Estimate Wellbore Events 有权
    估计井眼事件的方法和系统

    公开(公告)号:US20100211423A1

    公开(公告)日:2010-08-19

    申请号:US12680867

    申请日:2008-10-31

    申请人: Owen J Hehmeyer

    发明人: Owen J Hehmeyer

    IPC分类号: G06Q10/00 G06Q50/00

    CPC分类号: G01V1/40 E21B44/00

    摘要: A method and system for estimating the status of a production well using a probability calculator and for developing such a probability calculator. The method includes developing a probability calculator, which may be a Bayesian network, utilizing the Bayesian network in a production well event detection system, which may include real-time well measurements, historical measurements, engineering judgment, and facilities data. The system also includes a display to show possible events in descending priority and/or may trigger an alarm in certain cases.

    摘要翻译: 一种使用概率计算器估计生产井的状态并用于开发这样的概率计算器的方法和系统。 该方法包括在生产井事件检测系统中利用贝叶斯网络开发可能是贝叶斯网络的概率计算器,其可以包括实时井测量,历史测量,工程判断和设施数据。 该系统还包括一个显示器,以显示降序优先的可能事件和/或在某些情况下触发警报。

    Solvent separation in a solvent-dominated recovery process
    8.
    发明授权
    Solvent separation in a solvent-dominated recovery process 有权
    以溶剂为主的回收工艺中的溶剂分离

    公开(公告)号:US08752623B2

    公开(公告)日:2014-06-17

    申请号:US12987714

    申请日:2011-01-10

    IPC分类号: E21B43/40 E21B43/34

    CPC分类号: E21B43/25 C09K8/58 E21B43/40

    摘要: In solvent-dominated recovery processes for recovering In situ oil, including bitumen, the produced fluid stream includes oil and solvent. The solvent is preferably recovered and reinjected into the reservoir. In previously described methods, solvent is removed from the oil/solvent mixture. In the present method, the oil/solvent mixture is first separated into a heavier stream and a lighter stream from which solvent is independently removed.

    摘要翻译: 在用于回收原位油(包括沥青)的以溶剂为主的回收方法中,所产生的流体流包括油和溶剂。 溶剂优选回收并重新注入储存器。 在先前描述的方法中,从油/溶剂混合物中除去溶剂。 在本方法中,首先将油/溶剂混合物分离成更重的物流和较轻的流,从其中独立地除去溶剂。

    Method of distributing a viscosity reducing solvent to a set of wells
    9.
    发明授权
    Method of distributing a viscosity reducing solvent to a set of wells 有权
    将一种减粘溶剂分配到一组孔中的方法

    公开(公告)号:US08899321B2

    公开(公告)日:2014-12-02

    申请号:US13084256

    申请日:2011-04-11

    IPC分类号: E21B47/00 E21B43/16 G06Q99/00

    CPC分类号: E21B43/16 G06Q99/00

    摘要: Described are methods of distributing a viscosity reducing solvent to a set of wells terminating in an underground oil reservoir where the variation in the net solvent injection rate is minimized. The net solvent injection rate is the difference between the total solvent injection rate and the total solvent production rate from the set of wells, for example on an instantaneous or daily rate basis. Minimizing this variation can reduce costs associated with surface solvent storage, subsurface solvent storage, and solvent supply, since solvent supply often is least expensive when supplied at near a fixed rate. One option is to operate well pairs and to inject solvent into one well of the pair while producing oil and solvent from the other well of the pair. These methods are particularly useful in solvent-dominated, cyclic or non-cyclic, viscous oil recovery processes.

    摘要翻译: 描述了将减粘溶剂分配到终止于地下储油室中的一组井,其中净溶剂喷射速率的变化最小化的方法。 净溶剂注入速率是从一组孔中的总溶剂注入速率和总溶剂生产速率之间的差异,例如以瞬时或每日速率为基础。 最小化这种变化可以降低与表面溶剂储存,地下溶剂储存和溶剂供应相关的成本,因为当以接近固定速率供应时,溶剂供应通常是最便宜的。 一个选择是操作井对,并将溶剂注入到一对井中,同时从该井的另一个井中产生油和溶剂。 这些方法在以溶剂为主的,循环的或非循环的粘稠油回收方法中特别有用。

    SYSTEMS AND METHODS FOR PREDICTING WELL PERFORMANCE
    10.
    发明申请
    SYSTEMS AND METHODS FOR PREDICTING WELL PERFORMANCE 审中-公开
    用于预测性能的系统和方法

    公开(公告)号:US20130124171A1

    公开(公告)日:2013-05-16

    申请号:US13810862

    申请日:2011-06-03

    IPC分类号: G06F17/50 E21B41/00

    摘要: There is provided a method for predicting behavior of a physical system. An exemplary method comprises identifying a set of input variables that have an impact on an output metric and identifying a subset of the set of input variables the subset having a relatively larger impact on the output metric. A physical property model is built to predict the output metric as a function of the subset of the set of input variables. Postulated changes in the subset of the set of input variables are probabilistically ranked using the physical property model. Behavior of the physical system is predicted based on the rank of the postulated changes.

    摘要翻译: 提供了一种用于预测物理系统的行为的方法。 示例性方法包括识别对输出度量具有影响的一组输入变量,并且识别输入变量集合的子集,该子集对输出度量具有相对较大的影响。 构建物理属性模型以将输出度量作为输入变量集的子集的函数来预测。 使用物理属性模型对输入变量集合的子集中的假设变化进行概率排序。 物理系统的行为是根据假设变化的等级来预测的。