Method and apparatus for geobaric analysis
    275.
    发明授权
    Method and apparatus for geobaric analysis 失效
    用于地理分析的方法和装置

    公开(公告)号:US07542853B2

    公开(公告)日:2009-06-02

    申请号:US11764634

    申请日:2007-06-18

    Abstract: A method and apparatus for geobaric analysis. The method may include acquiring an in situ gas volume of a subterranean formation, acquiring a drilling fluid characteristic, determining a volume of gas excavated from the subterranean formation utilizing the drilling fluid characteristic, and estimating the formation pressure utilizing the in situ gas volume and the excavated gas volume.

    Abstract translation: 一种用于地理分析的方法和装置。 该方法可以包括获取地下地层的原位气体体积,获取钻井液特征,利用钻井液特性确定从地层挖掘的气体的体积,以及利用原位气体体积和 挖出气量。

    Method and composition for removing filter cake from a horizontal wellbore using a stable acid foam
    276.
    发明授权
    Method and composition for removing filter cake from a horizontal wellbore using a stable acid foam 失效
    使用稳定的酸性泡沫从水平井眼去除滤饼的方法和组合物

    公开(公告)号:US07514391B2

    公开(公告)日:2009-04-07

    申请号:US12070748

    申请日:2008-02-21

    Applicant: Albert F. Chan

    Inventor: Albert F. Chan

    CPC classification number: C09K8/52

    Abstract: A composition and method for removing a filter cake from a horizontal wellbore in a subterranean formation using a composition containing a inorganic or organic acidic material, a cationic fluorocarbon surfactant, an alkyl alcohol, water optionally containing ammonium chloride and at least one of an alkyl polyglycoside and a betaine surfactant to produce a stable foam used to remove filter cake from a horizontal wellbore.

    Abstract translation: 一种用于使用含有无机或有机酸性材料,阳离子氟碳表面活性剂,烷基醇,任选地含有氯化铵的水和至少一种烷基多糖苷的组合物从地层中的水平井筒中除去滤饼的组合物和方法 和甜菜碱表面活性剂,以产生用于从水平井眼去除滤饼的稳定的泡沫。

    Method for producing lithium vanadium polyanion powders for batteries
    278.
    发明申请
    Method for producing lithium vanadium polyanion powders for batteries 审中-公开
    电池用锂钒聚阴离子粉末的制造方法

    公开(公告)号:US20080305256A1

    公开(公告)日:2008-12-11

    申请号:US12024038

    申请日:2008-01-31

    CPC classification number: H01M4/5825 C01B25/45

    Abstract: This invention relates to a process for producing an improved cathode powder for making lithium ion batteries wherein the powder comprises lithium, vanadium and a polyanion. The process includes forming a solution-suspension of the precursors, which include vanadium pentoxide, with a reducing agent, a solvent, and a carbon-residue-forming material. The reducing agent causes the vanadium in vanadium pentoxide to reduce from V5+ to V3+. The solution-suspension is heated in an inert environment to drive the synthesis of the LVP (Li3V2(PO4)3) such that the carbon-residue-forming material is also oxidized to precipitate in and on the LVP forming carbon-containing LVP or CCLVP. The liquids are separated from the solids and the dry powder is heated to a second higher temperature to drive the crystallization of the product. The resulting product retains a small particle size, includes carbon in the LVP for conductivity and is created with very low cost precursors and avoids the need for milling or other processing to reduce the product to a particle size suitable for use in batteries. It also does not require the addition of carbon black, graphite or other form of carbon to provide the conductivity required for use in batteries.

    Abstract translation: 本发明涉及一种制备用于制备锂离子电池的改进的阴极粉末的方法,其中该粉末包括锂,钒和聚阴离子。 该方法包括形成包含五氧化二钒的前体与还原剂,溶剂和形成碳残留物的溶液的悬浮液。 还原剂使五氧化二钒中的钒从V5 +降低至V3 +。 将溶液 - 悬浮液在惰性环境中加热以驱动LVP(Li 3 V 2(PO 4)3)的合成),使得碳残留物形成材料也被氧化沉淀在LVP形成含碳的LVP或CCLVP中 。 将液体与固体分离,将干燥粉末加热至第二较高温度以驱使产物结晶。 所得到的产品保持小的粒度,包括LVP中的导电性碳,并且以非常低成本的前体产生,并且避免需要研磨或其它加工以将产品降低至适合用于电池的粒度。 它也不需要添加炭黑,石墨或其他形式的碳,以提供用于电池所需的电导率。

    Well chemical treatment utilizing plunger lift delivery system with chemically improved plunger seal
    279.
    发明授权
    Well chemical treatment utilizing plunger lift delivery system with chemically improved plunger seal 有权
    使用具有化学改进的柱塞密封的柱塞提升输送系统进行良好的化学处理

    公开(公告)号:US07451823B2

    公开(公告)日:2008-11-18

    申请号:US11466370

    申请日:2006-08-22

    CPC classification number: E21B33/068 E21B27/02 E21B37/06 E21B43/121 E21B43/25

    Abstract: An apparatus incorporating a chemical seal and method for removing fluids from a well is disclosed. The chemical seal is created by a foaming agent which, when in the presence of gas and fluids present in the well, and when agitated by the apparatus, creates foam between the apparatus and the walls of the well in which it operates. The foam improves the seal between the apparatus and the inner wall of the well, improving the efficiency of the apparatus in lifting fluids from the well. Furthermore, the chemical seal improves the distribution of treatment chemicals within the well as it reduces liquid flowback. Automatic recharging or reapplication of the foaming agent and/or treatment chemicals to the apparatus can be accomplished with a chemical application assembly associated with the well.

    Abstract translation: 公开了一种结合化学密封的装置和从井中去除流体的方法。 化学密封是由发泡剂产生的,发泡剂在存在于井中的气体和流体存在的情况下以及当该设备搅动时,在设备和其所在的井的壁之间产生泡沫。 泡沫改善了设备和井壁内壁之间的密封,提高了从井中提升流体的设备的效率。 此外,化学密封改善了井内处理化学品的分布,因为它减少了液体回流。 将发泡剂和/或处理化学品自动再充电或再次施用于设备可以通过与井相关联的化学施用组件来实现。

    ANTI-SURGE/REVERSE THRUSTER
    280.
    发明申请
    ANTI-SURGE/REVERSE THRUSTER 有权
    反向/反向THRUSTER

    公开(公告)号:US20080264689A1

    公开(公告)日:2008-10-30

    申请号:US11741484

    申请日:2007-04-27

    CPC classification number: E21B4/18 E21B17/07 E21B17/076

    Abstract: An anti-surge/reverse thrusting tool for reducing the forces on a drill bit used in subterranean well drilling operations is provided along with methods for drilling wells using a drill string employing the tool. The tool utilizes the pressure differential between drilling fluid flowing through the tool and the fluid located in the well bore annulus proximate the tool to reduce the likelihood of drill bit stall. The tool generally comprises an outer housing and a piston assembly that is axially shiftable relative to the housing.

    Abstract translation: 提供了用于减少地下钻井操作中使用的钻头上的力的防喘振/反向推进工具以及使用采用该工具的钻柱钻井的方法。 该工具利用流过工具的钻井液与位于靠近工具的井筒环中的流体之间的压差,以减少钻头失速的可能性。 工具通常包括外壳体和相对于壳体可轴向移动的活塞组件。

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