Method for preparing microgels of controlled size
    1.
    发明授权
    Method for preparing microgels of controlled size 失效
    制备受控尺寸的微凝胶的方法

    公开(公告)号:US06579909B1

    公开(公告)日:2003-06-17

    申请号:US09666567

    申请日:2000-09-20

    IPC分类号: B01D2101

    摘要: The present invention relates to a method for preparing microgels of controlled size. According to the method, a gelling composition comprising a polymer and a crosslinking additive intended for the polymer is injected into a porous and permeable medium, and a monodisperse solution of microgels of substantially constant size is recovered at the outlet. The invention also relates to an application of the method for reducing the permeability of porous and permeable formations of reservoir rock type.

    摘要翻译: 本发明涉及一种制备受控尺寸的微凝胶的方法。 根据该方法,将包含聚合物和用于聚合物的交联添加剂的胶凝剂组合物注入多孔和可渗透介质中,并且在出口处回收基本恒定尺寸的微凝胶的单分散溶液。本发明还涉及一种 应用该方法降低储层岩石类型多孔渗透层的渗透性。

    Flow rate control valve for solutions of polymers
    4.
    发明授权
    Flow rate control valve for solutions of polymers 有权
    聚合物溶液流量控制阀

    公开(公告)号:US09260937B2

    公开(公告)日:2016-02-16

    申请号:US13807990

    申请日:2011-07-01

    摘要: A flow rate control valve and a method for injecting a fluid into an underground formation are provided. In accordance with the method, the fluid is transported in at least one injection pipe. The injection pipe has a main portion including a single tube. The flow rate control valve has at least ten fluid transport tubes that are arranged in parallel. A ratio of the cross-section of the main portion over the sum of the cross-sections of the fluid transport tubes is less than or equal to 5. A flow rate of the fluid circulating in the injection pipe is adjusted by distributing the fluid through all or only some of the fluid transport tubes. The fluid from the injection pipe is then injected into the underground formation.

    摘要翻译: 提供一种流量控制阀和将流体注入地下地层的方法。 根据该方法,流体在至少一个注射管中输送。 注射管具有包括单管的主要部分。 流量控制阀具有平行布置的至少十个流体输送管。 主要部分的横截面与流体输送管的横截面之和的比率小于或等于5.通过将流体分配到流体中来调节在注入管中循环的流体的流量 全部或只有一些流体输送管。 然后将来自注入管的流体注入地下地层。

    Method for reducing retention of a displacement agent and application to
assisted recovery of hydrocarbons
    5.
    发明授权
    Method for reducing retention of a displacement agent and application to assisted recovery of hydrocarbons 失效
    减少置换剂保留的方法和辅助回收碳氢化合物的应用

    公开(公告)号:US5368101A

    公开(公告)日:1994-11-29

    申请号:US39413

    申请日:1993-06-02

    IPC分类号: E21B43/22 C09K8/84

    CPC分类号: C09K8/845

    摘要: A method for reducing retention of a polymer based displacement agent injected into a hydrocarbon containing rock matrix involves treating the matrix with an adsorbent solution containing alkali metal phosphates after the rock matrix comprising clays has been stabilized by injection of a solution containing cations obtained from KCl or NaCL salts. The presence of the cations increases the effect of the adsorbent solution.

    摘要翻译: PCT No.PCT / FR92 / 00812 Sec。 371日期:1993年6月2日 102(e)日期1993年6月2日PCT提交1992年8月21日PCT公布。 出版物WO93 / 04266 日本1993年3月4日。一种减少注入含烃岩石基质中的基于聚合物的置换剂的保留性的方法包括在包含粘土的岩石基质已经通过注入 含有由KCl或NaCL盐获得的阳离子的溶液。 阳离子的存在增加了吸附剂溶液的作用。

    FLOW RATE CONTROL VALVE FOR SOLUTIONS OF POLYMERS
    6.
    发明申请
    FLOW RATE CONTROL VALVE FOR SOLUTIONS OF POLYMERS 有权
    用于聚合物溶液的流量控制阀

    公开(公告)号:US20130098620A1

    公开(公告)日:2013-04-25

    申请号:US13807990

    申请日:2011-07-01

    IPC分类号: E21B34/06

    摘要: The disclosure relates to a method for injecting a fluid into an underground formation, wherein: a fluid is transported in at least one injection pipe; the injection pipe includes a main portion further including a single tube, and a flow rate control valve including at least ten fluid transport tubes arranged in parallel; where the ratio of the section of the single tube of the main portion over the sum of the section of the fluid transport tubes of the flow rate control valve is less than or equal to 5; the flow rate of the fluid circulating in the injection pipe is adjusted by distributing the fluid in all or part of the fluid transport tubes of the flow rate control valve; and the fluid from the injection pipe is injected into the underground formation. The disclosure also relates to a flow rate control valve comprising an installation for injecting a fluid.

    摘要翻译: 本发明涉及一种将流体注入地下地层的方法,其中:流体在至少一个注入管中输送; 注射管包括还包括单个管的主要部分和包括并联布置的至少十个流体输送管的流量控制阀; 其中主要部分的单管的截面与流量控制阀的流体输送管的截面之和的比率小于或等于5; 通过在流量控制阀的流体输送管的全部或一部分中分配流体来调节在喷射管中循环的流体的流量; 并将来自注入管的流体注入地下地层。 本公开还涉及一种包括用于注射流体的装置的流量控制阀。

    Assisted oil recovery with use of fermentation fluids
    8.
    发明授权
    Assisted oil recovery with use of fermentation fluids 失效
    使用发酵液辅助回收油

    公开(公告)号:US4412925A

    公开(公告)日:1983-11-01

    申请号:US920522

    申请日:1978-06-29

    CPC分类号: C09K8/905 Y10S507/936

    摘要: An aqueous composition is provided, suitable for direct use in waterflood oil recovery processes, which comprises the clarified fermentation fluid obtained by(a) culturing a polysaccharide-producing microorganism in an aqueous culture medium to produce an aqueous culture containing dissolved polysaccharide therein; and(b) clarifying the resultant aqueous culture from (a) by at least one of centrifugation and filtration, introducing therein at least one bactericidal agent, and recovering the resultant clarified fermentation fluid;said aqueous composition being obtained without precipitation and recovery of a solid polysaccharide and dissolution thereof in an aqueous medium.The above composition can be pumped into oil formations without substantial clogging thereof.

    摘要翻译: 提供一种水性组合物,其适于直接用于含水回收方法,其包括通过(a)在水性培养基中培养产生多糖的微生物以产生其中含有溶解的多糖的含水培养物而获得的澄清发酵液; 和(b)通过离心和过滤中的至少一种来从(a)中澄清所得的水性培养物,在其中引入至少一种杀菌剂,并回收得到的澄清发酵液; 所述水性组合物在不沉淀和回收固体多糖并在水性介质中溶解的情况下得到。 上述组合物可以被泵送到油层中而没有实质的堵塞。