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    Heat Removal in Drilling and Production Operations
    6.
    发明申请
    Heat Removal in Drilling and Production Operations 有权
    钻井和生产作业中的除热

    公开(公告)号：US20120216990A1

    公开(公告)日：2012-08-30

    申请号：US13439662

    申请日：2012-04-04

    Applicant: Lirio Quintero ,  Othon Rego Monteiro

    Inventor： Lirio Quintero ,  Othon Rego Monteiro

    IPC: F28D15/00 ,  C09K8/60 ,  C09K8/02

    CPC classification number: C09K8/32 ,  C09K8/035 ,  C09K8/04 ,  C09K8/52 ,  C09K8/602 ,  C09K8/604 ,  C09K8/82 ,  C09K8/84 ,  E21B36/001

    Abstract: Working fluids, such as drilling fluids, may remove heat from other fluids, tools, equipments and environments and transfer it to other locations by using reversible phase change elements. The heat removal occurs through the absorption of heat by one or more phase transitions or a sequence of phase transitions in the elements of the working fluid. For instance, heat is absorbed when the phase change portions of the reversible phase change elements change phase including, but not necessarily limited to, a change from solid to smectic liquid crystal, from solid to nematic liquid crystal, from smectic liquid crystal to isotropic liquid, from nematic liquid crystal to isotropic liquid, from solid to isotropic liquid, and sequences and combinations thereof. Heat is released when the phase change reverses. These phase changes are first-order transitions and are associated with a latent heat or enthalpy.

    Abstract translation: 工作流体，如钻井液，可以从其他流体，工具，设备和环境中除去热量，并通过使用可逆相变元件将其转移到其他位置。 通过在工作流体的元件中的一个或多个相变或相变序列的吸收而发生热消除。 例如，当可逆相变元件的相变部分改变相位时，吸收热量，包括但不一定限于从固体到近晶液晶的从固体向向列型液晶从近晶液晶到各向同性液体的变化 ，从向列液晶到各向同性液体，从固体到各向同性液体，以及其序列和组合。 当相变反转时释放热量。 这些相变是一阶跃迁，并与潜热或焓有关。

    SELF-DESTRUCTIVE BARITE FILTER CAKE IN WATER-BASED AND OIL-BASED DRILLING FLUIDS
    7.
    发明公开
    SELF-DESTRUCTIVE BARITE FILTER CAKE IN WATER-BASED AND OIL-BASED DRILLING FLUIDS 审中-公开

    公开(公告)号：US20240279527A1

    公开(公告)日：2024-08-22

    申请号：US18639736

    申请日：2024-04-18

    Applicant: SAUDI ARABIAN OIL COMPANY ,  KING FAHD UNIVERSITY OF PETROLEUM & MINERALS

    Inventor： Ayman R. Al-Nakhli ,  Mohamed Ahmed Nasr El Din Mahmoud ,  Zeeshan Tariq

    IPC: C09K8/03 ,  C09K8/84 ,  C09K8/92 ,  C09K23/18

    CPC classification number: C09K8/032 ,  C09K8/84 ,  C09K8/92 ,  C09K23/18

    Abstract: Drilling fluid compositions may include a weighting agent, a nitrite-containing compound, and an ammonium-containing compound, where the nitrite-containing compound and the ammonium-containing compound may be encapsulated together in copolymer micro-particles forming encapsulated thermochemical compounds, and where at least one property selected from the group consisting of the density, the plastic viscosity, the yield point, the gel strength, and the pH, of the drilling fluid composition may be substantially similar to the at least one property of a comparable drilling fluid composition devoid of the encapsulated thermochemical compounds. Methods for reducing a filter cake from a wellbore surface in a subterranean formation are also provided. The methods may include introducing into the wellbore the drilling fluid compositions, allowing the drilling fluid composition to reach a temperature in the wellbore sufficient for the encapsulated thermochemical compounds to react, where the reaction of the encapsulated thermochemical compounds generates heat and nitrogen gas.

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