Method and apparatus for determining CO.sub.2 minimum miscibility
pressure of reservoir oil
    1.
    发明授权
    Method and apparatus for determining CO.sub.2 minimum miscibility pressure of reservoir oil 失效
    确定油藏油CO2最小混溶压力的方法和装置

    公开(公告)号:US4455860A

    公开(公告)日:1984-06-26

    申请号:US447595

    申请日:1982-12-07

    IPC分类号: G01N33/28 G01N33/26

    CPC分类号: G01N33/28 G01N33/2823

    摘要: A method for determining the CO.sub.2 minimum miscibility pressure (MMP) is disclosed which comprises filling a coiled capillary tube with oil at a predetermined temperature T.sub.1 and an initial predetermined pressure P.sub.1 less than the CO.sub.2 MMP. Carbon dioxide is injected into the capillary tube at a fixed flow rate F.sub.1 to displace the oil while maintaining the temperature of the oil at T.sub.1 and the pressure at P.sub.1. The pressure drop across the capillary tube and the volume of carbon dioxide injected is constantly measured. The pressure difference versus volume of carbon dioxide injected data is plotted and the pressure drop .DELTA.P.sub.1 at the point of inflection where the second derivative goes from a negative value to a positive value is determined graphically. The previous steps are repeated while maintaining T.sub.1 and F.sub.1 constant at a different pressure P.sub.2 less than the CO.sub.2 MMP and .DELTA.P.sub.2 at the inflection point of pressure versus volume of CO.sub.2 injected is determined. Additional CO.sub.2 displacement tests are conducted at the same temperature T.sub.1 and CO.sub.2 flow rate F.sub.1 at various pressure levels (at least two) above the CO.sub.2 MMP. The pressure drop at each pressure P.sub.3 and P.sub.4 above the CO.sub.2 MMP is plotted versus the volume of carbon dioxide injected. The pressure drop .DELTA.P.sub.3 and .DELTA.P.sub.4 at the point of inflection as previously defined is determined for the corresponding pressure P.sub.3 and P.sub.4. The corresponding pressure drop at the inflection point obtained for the pressure values below MMP and the pressure drop at the inflection point obtained for the pressure values above MMP minus the pressure drop for CO.sub.2 under the same test conditions as calculated by the Hagen-Poiseuille equation are plotted as a linear function of test pressure. The CO.sub.2 MMP is determined graphically as the pressure at the point where the two lines defining miscible and immiscible displacement intersect.

    摘要翻译: 公开了一种用于确定CO 2最小混溶性压力(MMP)的方法,其包括在预定温度T1和小于CO 2 MMP的初始预定压力P1下填充螺旋毛细管。 将二氧化碳以固定的流量F1注入毛细管中以置换油,同时将油的温度保持在T1,压力为P1。 不断测量毛细管上的压降和注入的二氧化碳的体积。 绘制二氧化碳注入数据的压力差与体积的关系,图形地确定二次导数从负值到正值的拐点处的压降DELTA P1。 重复前面的步骤,同时保持T1和F1恒定在不同的压力P2,小于压力相对于注入的二氧化碳体积的拐点处的CO 2 MMP和DELTA P2。 在相同的温度T1和CO2流量F1下进行额外的二氧化碳置换测试,在不同的压力水平(至少两个)高于二氧化碳基质金属蛋白酶。 在二氧化碳基质金属上方的每个压力P3和P4的压降相对于注入的二氧化碳的体积绘制。 针对相应的压力P3和P4确定如前所述的拐点处的压降DELTA P3和DELTA P4。 对于在低于MMP的压力值得到的拐点处的相应压降和对于高于MMP的压力值获得的拐点处的压降减去在通过Hagen-Poiseuille方程计算的相同试验条件下的CO 2的压降下, 绘制为测试压力的线性函数。 图形化地确定了二氧化碳基质金属蛋白酶(MMP)作为两条定义可混溶和不混溶的位移相交点的压力。

    Method and system for measuring properties of fluids
    2.
    发明授权
    Method and system for measuring properties of fluids 失效
    测量流体性能的方法和系统

    公开(公告)号:US4530234A

    公开(公告)日:1985-07-23

    申请号:US509759

    申请日:1983-06-30

    IPC分类号: G01N11/00 G01N33/28

    CPC分类号: G01N33/2823 G01N11/00

    摘要: Method and system for measuring properties of fluids, particularly of reservoir fluids involved in enhanced oil recovery, comprising a pair of high pressure cells, each one of the cells having a floating piston therein which separates the respective cell into a fluid analysis chamber and a hydraulic fluid chamber. Means are provided for selectively controlling the amount of pressure applied to the hydraulic fluid chamber of each cell, whereby the pressure of the fluid under analysis is defined. Means are also provided for interconnecting the fluid analysis chambers of each cell whereby fluid under analysis may be selectively passed between the cells.

    摘要翻译: 用于测量流体,特别是涉及增强油回收的储层流体的性质的方法和系统,包括一对高压电池,每个电池中具有浮动活塞,其中将各个电池分离成流体分析室和液压 流体室。 提供了用于选择性地控制施加到每个电池的液压流体室的压力的装置,由此限定被分析的流体的压力。 还提供了用于互连每个电池的流体分析室的装置,由此可以在电池之间选择性地通过待分析的流体。

    Thermal barriers for enhanced oil recovery
    3.
    发明授权
    Thermal barriers for enhanced oil recovery 失效
    用于提高采收率的热障

    公开(公告)号:US4984635A

    公开(公告)日:1991-01-15

    申请号:US437418

    申请日:1989-11-16

    IPC分类号: C09K8/94 E21B43/24 E21B43/243

    CPC分类号: C09K8/94 E21B43/24 E21B43/243

    摘要: A process is described to direct heat towards a productive interval of a reservoir during a thermal enhanced oil recovery (EOR) operation. A chemical composition suitable for producing a rigid polymer foam is injected above or below the productive interval. Once in place the temperature of the composition is increased and it reacts to produce a foamed polymer thermal barrier. The temperature can be increased by steam injection or in-situ combustion. After a rigid foam is formed, thermal efficiency is increased by reducing heat losses to non-producing zones during a thermal stimulation.

    摘要翻译: 描述了一种方法,以在热增强油回收(EOR)操作期间将热量引向储层的生产间隔。 适用于生产刚性聚合物泡沫的化学组合物注入生产间隔之上或之下。 一旦存在,组合物的温度升高,并且它反应以产生泡沫聚合物热障壁。 通过蒸汽喷射或原位燃烧可以提高温度。 在形成刚性泡沫之后,通过在热刺激期间减少对非生产区的热损失来提高热效率。

    Monitoring, diagnosing and optimizing electric submersible pump operations
    4.
    发明授权
    Monitoring, diagnosing and optimizing electric submersible pump operations 有权
    监测,诊断和优化电潜泵操作

    公开(公告)号:US09261097B2

    公开(公告)日:2016-02-16

    申请号:US13609163

    申请日:2012-09-10

    摘要: The present disclosure describes systems and methods for monitoring, diagnosing and optimizing operation of an electric submersible pump (ESP). At least some illustrative embodiments include a method that includes collecting measured data representative of a state of an ESP within a well or of well conditions and storing the measured data, matching a nodal analysis model of the well to the well by matching one or more modeled values to corresponding measured data, and identifying one or more likely conditions of the ESP based at least in part on data generated by a matched model. The method further includes updating the matched model to reflect a selected correction of one of the likely conditions identified, generating ESP performance curves using the updated model, and presenting to a user an action recommended to achieve an ESP performance consistent with an ESP operating point selected from one of the ESP performance curves.

    摘要翻译: 本公开描述了用于监测,诊断和优化电潜泵(ESP)的操作的系统和方法。 至少一些说明性实施例包括一种方法,其包括收集表示井内或井状况内的ESP的状态的测量数据,并存储测量数据,通过匹配一个或多个建模的井将井的节点分析模型与井相匹配 值到对应的测量数据,以及至少部分地基于由匹配模型生成的数据来识别ESP的一个或多个可能状况。 该方法还包括更新匹配的模型以反映所识别的可能状况之一的选择的校正,使用更新的模型生成ESP性能曲线,并向用户呈现推荐用于实现与选择的ESP操作点一致的ESP性能的动作 从一个ESP性能曲线。

    SUBTERRANEAN FLOW BARRIERS CONTAINING TRACERS
    5.
    发明申请
    SUBTERRANEAN FLOW BARRIERS CONTAINING TRACERS 审中-公开
    含有牵引车的亚洲流动障碍物

    公开(公告)号:US20110277996A1

    公开(公告)日:2011-11-17

    申请号:US12777965

    申请日:2010-05-11

    IPC分类号: E21B47/00 E21B43/16

    摘要: Some aspects of the present disclosure include monitoring fluid flow in a subterranean reservoir. In some implementations, a sealant mixture is injected into a subterranean reservoir to form a flow barrier in the subterranean reservoir. The sealant mixture includes a sealant material and a tracer. The tracer may be stored in the flow barrier, and the tracer may be displaced from the flow barrier, for example, by fluid flow in the subterranean reservoir. The displaced tracer may be detected, for example, in fluid produced into a well bore in the subterranean reservoir. Fluid flow in the subterranean reservoir may be analyzed based on detection of the tracer.

    摘要翻译: 本公开的一些方面包括监测地下储层中的流体流动。 在一些实施方案中,将密封剂混合物注入到地下储层中以在地下储层中形成流动阻挡层。 密封剂混合物包括密封剂材料和示踪剂。 示踪剂可以存储在流动屏障中,并且示踪剂可以例如通过地下储层中的流体流动从流动屏障移位。 例如,位移示踪剂可以被检测为产生在地下储层中的井眼中的流体。 可以基于示踪剂的检测来分析地下储层中的流体流动。

    MONITORING, DIAGNOSING AND OPTIMIZING ELECTRIC SUBMERSIBLE PUMP OPERATIONS
    6.
    发明申请
    MONITORING, DIAGNOSING AND OPTIMIZING ELECTRIC SUBMERSIBLE PUMP OPERATIONS 有权
    监测,诊断和优化电气不合格泵的运行

    公开(公告)号:US20140039836A1

    公开(公告)日:2014-02-06

    申请号:US13609163

    申请日:2012-09-10

    IPC分类号: G06F15/00

    摘要: The present disclosure describes systems and methods for monitoring, diagnosing and optimizing operation of an electric submersible pump (ESP). At least some illustrative embodiments include a method that includes collecting measured data representative of a state of an ESP within a well or of well conditions and storing the measured data, matching a nodal analysis model of the well to the well by matching one or more modeled values to corresponding measured data, and identifying one or more likely conditions of the ESP based at least in part on data generated by a matched model. The method further includes updating the matched model to reflect a selected correction of one of the likely conditions identified, generating ESP performance curves using the updated model, and presenting to a user an action recommended to achieve an ESP performance consistent with an ESP operating point selected from one of the ESP performance curves.

    摘要翻译: 本公开描述了用于监测,诊断和优化电潜泵(ESP)的操作的系统和方法。 至少一些说明性实施例包括一种方法,其包括收集表示井内或井状况内的ESP的状态的测量数据,并存储测量数据,通过匹配一个或多个建模的井将井的节点分析模型与井相匹配 值到对应的测量数据,以及至少部分地基于由匹配模型生成的数据来识别ESP的一个或多个可能状况。 该方法还包括更新匹配的模型以反映所识别的可能状况之一的选择的校正,使用更新的模型生成ESP性能曲线,并向用户呈现推荐用于实现与选择的ESP操作点一致的ESP性能的动作 从一个ESP性能曲线。

    Method and system for determining fluid volumes of a two-phase effluent
fluid flow through a porous material
    7.
    发明授权
    Method and system for determining fluid volumes of a two-phase effluent fluid flow through a porous material 失效
    用于确定通过多孔材料的两相流出物流体流动体积的方法和系统

    公开(公告)号:US4672840A

    公开(公告)日:1987-06-16

    申请号:US797097

    申请日:1985-11-12

    申请人: Alvin S. Cullick

    发明人: Alvin S. Cullick

    IPC分类号: G01N15/08

    CPC分类号: G01N15/082

    摘要: A liquid hydrocarbon and an insoluble displacing fluid are passed through a core sample from a subsurface formation. The two-phase effluent flow out of the core sample is collected in a container where the two phases separate into an overlying fluid phase and an underlying fluid phase and the volumes of each phase are measured as an indication of the permeability of the core sample. Such volumes are measured by placing fluid level detectors in the container and detecting the movements of the air-fluid interface of the top of the overlying fluid phase and the fluid-fluid interface between the two phases as the fluid is drained from the container.

    摘要翻译: 液体烃和不溶性置换液从地下地层通过芯样品。 从芯样品中流出的两相流出物被收集在容器中,其中两相分离成上层流体相和下面的流体相,并且测量每个相的体积作为核心样品的渗透性的指示。 通过将流体液位检测器放置在容器中并且当从容器排出流体时,检测上层流体相的顶部的空气 - 流体界面和两相之间的流体 - 流体界面的运动来测量这样的体积。