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    Method for enhanced oil recovery
    1.
    发明授权
    Method for enhanced oil recovery 失效
    提高采收率的方法

    公开(公告)号：US4344486A

    公开(公告)日：1982-08-17

    申请号：US238874

    申请日：1981-02-27

    Applicant: David R. Parrish

    Inventor： David R. Parrish

    IPC: E21B43/16 ,  E21B43/24 ,  E21B43/40 ,  F25J3/04

    CPC classification number: E21B43/164 ,  E21B43/24 ,  E21B43/40 ,  F25J3/04533 ,  F25J3/04569 ,  F25J2260/80 ,  Y02P90/70

    Abstract: Disclosed is a method and apparatus for the enhanced recovery of liquid hydrocarbons from underground formations, said method comprising recovering a mixture comprising carbon dioxide and contaminants comprising hydrocarbon, hydrogen sulfide, or mixtures thereof, from an underground formation; combusting said mixture with an oxygen enriched gas to form a concentrated carbon dioxide stream; and injecting at least a portion of said concentrated carbon dioxide stream into an underground formation to enhance recovery of liquid hydrocarbon.

    Abstract translation: 公开了一种用于从地下地层增强液体烃的回收的方法和装置，所述方法包括从地下地层回收包含二氧化碳和包含烃，硫化氢或其混合物的污染物的混合物; 用富氧气体燃烧所述混合物以形成浓缩的二氧化碳流; 以及将至少一部分所述浓缩二氧化碳流注入地下地层以增强液态烃的回收。

    Method for selective plugging of depleted channels or zones in in situ oil shale retorts
    2.
    发明授权
    Method for selective plugging of depleted channels or zones in in situ oil shale retorts 失效
    在原位油页岩蒸馏器中选择性堵塞耗尽的通道或区域的方法

    公开(公告)号：US4431055A

    公开(公告)日：1984-02-14

    申请号：US276482

    申请日：1981-06-23

    Applicant: David R. Parrish

    Inventor： David R. Parrish

    IPC: E21B33/138 ,  E21B43/247 ,  E21B47/00

    CPC classification number: E21B33/138 ,  E21B43/247

    Abstract: Depleted zones or channels in in situ retorts that bypass unretorted zones can be plugged selectively by contacting the depleted zones in the in situ oil shale retort with an aqueous liquid, substantially free of a formation plugging amount of a solute, to increase the resistance of the depleted zone or channel to the passage of retorting gases.

    Abstract translation: 通过使原位油页岩蒸馏器中的贫化区域与基本上没有形成堵塞量的溶质的水性液体接触来选择性地堵塞旁路未流出区域的原位蒸馏器中的贫化区域或通道，以增加 贫化区或通道进入蒸馏气体通过。

    Tracers in predetermined concentration ratios
    5.
    发明授权
    Tracers in predetermined concentration ratios 失效
    示踪剂以预定浓度比

    公开(公告)号：US4055399A

    公开(公告)日：1977-10-25

    申请号：US744478

    申请日：1976-11-24

    Applicant: David R. Parrish

    Inventor： David R. Parrish

    IPC: E21B43/16 ,  E21B47/10 ,  E21B47/00 ,  G01N33/24

    CPC classification number: E21B43/16 ,  E21B47/1015

    Abstract: A method for tracing the flow of a plurality of fluid slugs injected into a subsurface formation using a number of tracers smaller than the number of fluid slugs. Single tracers are used in a number of fluid slugs equal to the number of tracers. In the remaining injected fluid slugs, combinations of at least two of the tracers in predetermined concentration ratios are used. Recovered fluid is analyzed for the presence of each of the tracers and the ratios of the tracers indicates breakthrough of each injected slug.

    Abstract translation: 使用小于流体段的数量的多个示踪剂来跟踪注入到地下地层中的多个流体段的流动的方法。 单个示踪剂用于许多与示踪剂数量相等的流体s塞。 在剩余的注射液体块中，使用预定浓度比的至少两种示踪剂的组合。 分析回收流体中每个示踪剂的存在，并且示踪剂的比率表示每个注入的块塞的突破。

    Carbazole acetic acid derivatives
    6.
    发明授权
    Carbazole acetic acid derivatives 失效
    咔唑乙酸衍生物

    公开(公告)号：US4178289A

    公开(公告)日：1979-12-11

    申请号：US2486

    申请日：1979-01-11

    Applicant: Leo Berger ,  Alfred J. Corraz ,  David R. Parrish ,  John W. Scott

    Inventor： Leo Berger ,  Alfred J. Corraz ,  David R. Parrish ,  John W. Scott

    IPC: C07D209/86 ,  C07D209/88

    CPC classification number: C07D209/88 ,  C07D209/86

    Abstract: A process for the preparation of 6-chloro-.alpha.-methylcarbazole-2-acetic acid from 6-chloro-.alpha.-hydroxy-.alpha.-methylcarbazole-2-acetic acid and/or 6-chloro-.alpha.-methylene-2-carboxylic acid, is described. The preparation of intermediates, such as, 6-chloro-.alpha.-hydroxy-.alpha.-methylcarbazole-2-acetic acid and lower alkyl carbazole-2-oxalate, inter alia, is also described.

    Abstract translation: 从6-氯-α-羟基-α-甲基咔唑-2-乙酸和/或6-氯-α-亚甲基-2-羧酸制备6-氯-α-甲基咔唑-2-乙酸的方法 ，被描述。 还描述了中间体如6-氯-α-羟基-α-甲基咔唑-2-乙酸和低级烷基咔唑-2-草酸酯的制备。

    Asymmetric synthesis of organic compounds
    7.
    发明授权
    Asymmetric synthesis of organic compounds 失效
    有机化合物的不对称合成

    公开(公告)号：US4105696A

    公开(公告)日：1978-08-08

    申请号：US720717

    申请日：1976-09-07

    Applicant: Zoltan G. Hajos ,  David R. Parrish

    Inventor： Zoltan G. Hajos ,  David R. Parrish

    IPC: C07C49/403 ,  C07D263/52 ,  C07J15/00 ,  C07C45/00 ,  C07C49/36 ,  C07C49/54 ,  C07C49/82

    CPC classification number: C07D263/52 ,  C07C45/56 ,  C07C45/66 ,  C07C45/67 ,  C07C45/69 ,  C07C45/73 ,  C07C49/753 ,  C07J15/00 ,  C07C2103/16

    Abstract: Optically active organic compounds are prepared starting from optically inactive reactants by means of an optically active agent which influences the course of the reaction. In particular optically active compounds having a "meso" type carbon atom undergo an intramolecular ring closure in the presence of an optically active agent to yield an optically active product having one additional ring. The present process is particularly useful in the preparation of optically active bicyclic diketones which are important intermediates in the total synthesis of steroids.

    Abstract translation: 通过影响反应过程的光学活性剂由光学惰性反应物开始制备光学活性的有机化合物。 特别是具有“内消旋”型碳原子的光学活性化合物在光学活性剂的存在下进行分子内闭环，得到具有一个另外的环的光学活性产物。 本方法特别可用于制备在全合成类固醇中重要的中间体的光学双环二酮。

    Method of producing synthesis gas by underground gasification of coal using specific well configuration
    8.
    发明授权
    Method of producing synthesis gas by underground gasification of coal using specific well configuration 失效
    使用特定井配置，通过地下气化煤生产合成气的方法

    公开(公告)号：US4648450A

    公开(公告)日：1987-03-10

    申请号：US802800

    申请日：1985-11-27

    Applicant: Bruce W. Gash ,  Luis E. Arri ,  Elton B. Hunt, Jr. ,  David R. Parrish

    Inventor： Bruce W. Gash ,  Luis E. Arri ,  Elton B. Hunt, Jr. ,  David R. Parrish

    IPC: E21B43/243 ,  E21B43/30 ,  C10B57/20

    CPC classification number: E21B43/243 ,  E21B43/30 ,  Y10S48/06

    Abstract: Underground coal gasification process containing a novel system of injection and production wells. Specifically, the injection well is positioned at an angle with respect to horizontal of less than the angle of repose of loose coal and char for the particular coal seam, and the production well is positioned at an angle with respect to horizontal of greater than the angle of repose but less than 90.degree.. This system protects the injection well during the process and places the production well in a position for maximum production while relieving it of certain tensile and shear stresses.

    Abstract translation: 地下煤气化过程含有注入生产井的新型系统。 具体来说，注入井相对于水平面定位成小于用于特定煤层的松散煤和焦炭的休止角，并且生产井相对于水平面定位成大于角度 的休息但小于90度。 该系统在过程中保护注射井，并将生产良好地放置在最大限度生产的位置，同时减轻其一定的拉伸和剪切应力。

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