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    Method for removing elemental sulfur in sour gas wells
    2.
    发明授权
    Method for removing elemental sulfur in sour gas wells 失效
    酸性气井中元素硫的去除方法

    公开(公告)号：US3909422A

    公开(公告)日：1975-09-30

    申请号：US31595072

    申请日：1972-12-18

    Applicant: TEXACO INC

    Inventor： SAMPLE JR THOMAS E

    IPC: C09K8/532 ,  E21B43/00 ,  E21B37/00

    CPC classification number: C09K8/532 ,  Y10S507/932

    Abstract: A process for producing sour gas wells whereby attendant problems due to sulfur deposition within the producing formation, well and surface equipment are prevented or alleviated by contacting the formation, well and surface equipment with a chemical composition whose aqueous solution will solubilize the sulfur by primary chemical reaction and containing a wetting agent to facilitate and accelerate the sulfur dissolution and removal.

    Abstract translation: 一种生产酸气井的方法，其中通过使地层，井和地面设备与其水溶液将主要化学物质溶解硫的化学组合物接触，从而防止或减轻在生产地层，井和地面设备内由于硫沉积引起的附带问题 反应并含有润湿剂以促进和加速硫的溶解和去除。

    Scale control
    4.
    发明授权
    Scale control 失效
    缩放控制

    公开(公告)号：US3925582A

    公开(公告)日：1975-12-09

    申请号：US29639972

    申请日：1972-10-10

    Applicant: TEXACO INC

    Inventor： SAMPLE JR THOMAS E ,  HUGHES JAMES W ,  TATE JACK F

    IPC: B05D5/00 ,  B05D7/00 ,  C08G18/28 ,  B05D3/02 ,  B32B27/40

    CPC classification number: B05D5/00 ,  B05D7/586 ,  C08G18/283 ,  Y10T428/31605 ,  Y10T428/31678

    Abstract: A process for imparting scale-resistant properties to substrate surfaces normally susceptible to mineral scale formation while in contact with mineralized water containing less than about 5 percent hydrocarbons and wherein any heat flow is from the substrate surface into the mineralized water comprising the steps of applying to said surfaces normally susceptible to scale formation a scale-resistant amount of partially cured polyurethane resin sufficient to coat said surfaces said resin containing pendant polyoxyalkylene chains obtained by including in the polyurethane reactive mixture, monohydric polyethers, a portion of which have the structural formula R - O-CH2 - CHR'' OnH wherein R alkyl, aryl or other radical which is nonreactive with isocyanate functional groups, R'' alkyl, and n is an integer from about 3 to about 50, and further curing the partially cured polyurethane resin to a degree such that said resin possesses good adhesion to said substrate, stability to inservice environmental conditions, but without significantly altering the integrity of the pendant polyoxyalkylene chains in the further cured polyurethane resin.

    Abstract translation: 通常在与含有少于约5％的烃的矿化水接触的情况下，通常易受矿物垢形成影响的基材表面赋予防垢性能，并且其中任何热流从基材表面进入矿化水的方法包括以下步骤： 所述表面通常易于形成鳞屑形成部分固化的聚氨酯树脂，其足以涂覆所述表面，所述树脂含有侧链聚氧化烯链，所述侧链聚氧化烯链通过在聚氨酯反应性混合物中包含一部分聚醚，其一部分具有结构式R- O-CH2-CHR'-OnH其中R =与异氰酸酯官能团反应的烷基，芳基或其它基团，R'=烷基，n为约3至约50的整数，并进一步固化部分固化的聚氨酯树脂 使得所述树脂对所述基材具有良好的粘附性，使其在使用中具有稳定性 环境条件，但是没有显着地改变在另外固化的聚氨酯树脂中侧链聚氧化烯链的完整性。

    Scale control
    5.
    发明授权
    Scale control 失效
    缩放控制

    公开(公告)号：US3922403A

    公开(公告)日：1975-11-25

    申请号：US25772672

    申请日：1972-05-30

    Applicant: TEXACO INC

    Inventor： SAMPLE JR THOMAS E ,  TATE JACK F

    IPC: B05D3/02 ,  B05D3/10 ,  B05D5/00 ,  B05D7/00 ,  C03C17/32 ,  C04B41/48 ,  C04B41/83 ,  B44D1/44 ,  B32B15/08

    CPC classification number: B05D3/108 ,  B05D3/0254 ,  B05D5/00 ,  B05D7/52 ,  B05D7/56 ,  C03C17/32 ,  C04B41/4823 ,  C04B41/83

    Abstract: A process for producing a fully cured, infusible coating which when applied to surfaces normally susceptible to the deposition of mineral scale substantially improves the resistance of such surfaces to mineral scale comprising, (1) applying to a substrate whose scale resistance is to be improved an acid or base catalyzed phenolic-aldehyde resin condensate containing a substantial number of reactive hydroxyl groups which are susceptible to oxyalkylation by a base catalyzed reaction with alkylene carbonate; and (2) contacting the resin condensate coated on the substrate with a catalytic quantity of basic catalyst and at least two moles of molten alkylene carbonate per mole of phenolic hydroxyl groups at a temperature ranging from about 350* to 380*F. until the surface of the coated substrate is converted into a surface with substantially improved scaleresistant properties; then (3) curing the resin until it is a fully cured, infusible coating bonded to the noramlly scalesusceptible surface.

    Abstract translation: 用于生产完全固化的不熔涂层的方法，当其施用于通常易于沉积矿物垢的表面时，基本上改善了这些表面对矿物垢的抵抗性，包括：（1）施加到要改善其抗蚀性的基材上 酸或碱催化的酚醛树脂缩合物，其含有大量的反应性羟基，其易于通过与碳酸亚烷基酯的碱催化反应进行烷氧基化反应; 和（2）在大约350°至380°F的温度下，将涂覆在基材上的树脂冷凝液与催化量的碱性催化剂和至少两摩尔的熔融碳酸亚烷基酯/摩尔酚羟基接触直到表面 被涂覆的基材转变成具有显着改善的抗垢性能的表面; 然后（3）固化树脂，直到其完全固化，不可渗透的涂层结合到非腐蚀性水垢敏感表面。

    Process for inhibiting scale deposition
    6.
    发明授权
    Process for inhibiting scale deposition 失效
    抑制垢沉积的方法

    公开(公告)号：US3888310A

    公开(公告)日：1975-06-10

    申请号：US48228274

    申请日：1974-06-24

    Applicant: TEXACO INC

    Inventor： SCHIEVELBEIN VERNON H ,  SAMPLE JR THOMAS E

    IPC: C02F5/10 ,  C09K8/528 ,  E21B43/00 ,  C02B5/06

    CPC classification number: C09K8/528 ,  C02F5/10

    Abstract: Scale prone waters may be treated with certain sulfonated alkali lignins to inhibit the build up on mineral scale deposits from the scale prone waters upon surfaces in contact with the scale prone waters. Sulfonated alkali lignins are dissolved in the scale prone waters in sufficient concentration to inhibit the formation of mineral scale on the surfaces.

    Abstract translation: 可以用某些磺化碱性木质素处理易溶解的水分，以防止在与易平坦的水接触的表面上，从容易发生水分的矿物垢沉积物上积聚。 磺化碱性木质素以足够的浓度溶解在易溶解的水中，以抑制表面上矿物垢的形成。

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