Fluid discrimination for use with a subterranean well
    43.
    发明授权
    Fluid discrimination for use with a subterranean well 有权
    用于地下井的液体辨别

    公开(公告)号:US08739880B2

    公开(公告)日:2014-06-03

    申请号:US13659375

    申请日:2012-10-24

    Abstract: A fluid discrimination system can include a fluid discriminator which selects through which of multiple outlet flow paths a fluid composition flows, the selection being based on a direction of flow of the fluid composition through the discriminator, and the direction being dependent on a fluid type in the fluid composition. Another fluid discriminator can include a structure which displaces in response to a fluid composition flow, whereby an outlet flow path of the fluid composition changes in response to a change in a ratio of fluids in the fluid composition. A method of discriminating between fluids can include providing a fluid discriminator which selects through which of multiple outlet flow paths a fluid composition flows in the well, the selection being based on a direction of flow of the fluid composition through the discriminator, and the direction being dependent on a ratio of the fluids in the fluid composition.

    Abstract translation: 流体鉴别系统可以包括流体鉴别器,其选择流体组合物流过的多个出口流动路径中的哪一个,该选择基于通过鉴别器的流体组合物的流动方向,并且该方向取决于流体类型 流体组成。 另一个液体鉴别器可以包括响应于流体组成流而移位的结构,由此流体组合物中的流体比例的变化响应于流体组合物的出口流动路径发生变化。 区分流体的方法可以包括提供流体鉴别器,其选择流体组合物通过多孔出口流路中的哪一个在井中流动,所述选择基于通过鉴别器的流体组合物的流动方向,并且该方向为 取决于流体组合物中流体的比例。

    Flow path control based on fluid characteristics to thereby variably resist flow in a subterranean well
    44.
    发明授权
    Flow path control based on fluid characteristics to thereby variably resist flow in a subterranean well 有权
    基于流体特性的流路控制,从而可变地抵抗地下井中的流动

    公开(公告)号:US08479831B2

    公开(公告)日:2013-07-09

    申请号:US13633693

    申请日:2012-10-02

    Abstract: A system for variably resisting flow of a fluid composition can include a flow passage and a set of one or more branch passages which intersect the flow passage, whereby a proportion of the composition diverted from the passage to the set of branch passages varies based on at least one of a) viscosity of the fluid composition, and b) velocity of the fluid composition in the flow passage. Another variable flow resistance system can include a flow path selection device that selects which of multiple flow paths a majority of fluid flows through from the device, based on a ratio of desired fluid to undesired fluid in the composition. Yet another variable flow resistance system can include a flow chamber, with a majority of the composition entering the chamber in a direction which changes based on a ratio of desired fluid to undesired fluid in the composition.

    Abstract translation: 用于可变地抵抗流体组合物的流动的系统可以包括流动通道和与流动通道相交的一组或多个分支通道的集合,由此从该通道转移到该组分支通道的组合物的一部分基于在 a)流体组合物的粘度中的至少一种,和b)流动通道中流体组合物的速度。 另一个可变流阻系统可以包括流路选择装置,该流路选择装置基于组合物中期望的流体与不需要的流体的比例来选择多数流体流过装置的多个流路。 另一个可变流阻系统可以包括流动室,其中大部分组合物沿着基于组合物中期望流体与不期望流体的比例而变化的方向进入室。

    REAL-TIME DOWNHOLE DRILLING MUD VISCOSITY AND DENSITY ESTIMATIONS

    公开(公告)号:US20220186572A1

    公开(公告)日:2022-06-16

    申请号:US17688697

    申请日:2022-03-07

    Abstract: In some embodiments, a method includes operating a mud circulation system having drilling mud flowing therethrough and performing a plurality of measurements from a plurality of sensors coupled to the mud circulation system. The method includes modeling, in real-time, drilling mud flow dynamics using a mathematical dynamics model and predicting physical states of the drilling mud with the mathematical dynamics model. Further, the method described herein includes inputting the measurements into the mathematical dynamics model and adapting the mathematical dynamics model based, at least in part, on discrepancies between the model physical state predictions and the measurements. The method further includes changing an operational parameter of the mud circulation system based on at least one value derived from the adapted mathematics dynamics model.

    Using an adjusted drive pulse in formation evaluation

    公开(公告)号:US10955581B2

    公开(公告)日:2021-03-23

    申请号:US15755473

    申请日:2015-09-17

    Abstract: A method of evaluating a subterranean formation includes conveying a tool along a borehole. The tool includes a transmitter that transmits a drive pulse and a receiver that receives at least one formation response to the drive pulse. The method further includes calculating a signal-to-noise ratio of the at least one formation response and comparing the signal-to-noise ratio to a programmable threshold. The method further includes determining, based on the comparing, an adjusted drive pulse to transmit and transmitting the adjusted drive pulse. The method further includes and receiving at least one formation response to the adjusted drive pulse and deriving formation data from the at least one formation response to the adjusted drive pulse. The method further includes displaying a representation of the formation based on the formation data.

    Systems and methods for estimating forces on a drill bit

    公开(公告)号:US10858927B2

    公开(公告)日:2020-12-08

    申请号:US15107333

    申请日:2014-12-30

    Abstract: Disclosed embodiments include systems and methods for estimating real-time bit forces experienced on a drill bit and decoupling bit force disturbances. Real-time bit forces can be estimated based on bit force observers using measurements from downhole sensor subs. Model-based observers that adopted to estimate the bit force from downhole sensor sub measurements. Strain and torque measurements as measured by the sensor subs are used to estimate bit force and bit torque. These measurements can be observed using an effective observer design with the estimated bit force and bit torque based on sensor sub measurements to track the real bit force and bit torque. Observations of estimated bit forces and identified bit force disturbances can be used perform drilling dynamics modeling and identify the occurrence of negative drilling events.

    Method and system for distributed control of drilling operations

    公开(公告)号:US10787896B2

    公开(公告)日:2020-09-29

    申请号:US15576023

    申请日:2016-02-18

    Abstract: A system including a plurality of subsystems each of which includes a subsystem controller coupled with a sensor configured to obtain a measurement, an actuator, and a subsystem processor. The subsystem processor includes a first memory storing instructions to identify a subsystem state and generate a subsystem performance objective based on the subsystem state. The system also includes a global processor coupled with each of the subsystems, the global processor includes a second memory storing instructions to identify a global system state based on the subsystem state of each subsystem, generate a global performance objective, calculate an updated performance objective for each subsystem, and transmit the updated performance objective to each subsystem. Once received, the subsystem controller in each subsystem activates the actuator to adjust a subsystem parameter to meet the updated performance objective.

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