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    • 21. 发明公开
    • Polysilicate esters for oil reservoir permeability control
    • Polysilikatester zum Kontrollieren derPermeabilitätvonErdöllagerstätten。
    • EP0283602A1
    • 1988-09-28
    • EP87302496.2
    • 1987-03-24
    • MOBIL OIL CORPORATION
    • Hoskin, Dennis HaroldRollmann, Louis Deane
    • E21B43/25E21B43/22
    • C09K8/885C09K8/5086
    • The permeability of subterranean oil-bearing formations is controlled by injection of an organic polysilicate ester. The ester may be derived from simple, monohydroxylic alcohols such as methanol, ethanol, propanol or butanol, from diols such as ethylene glycol, from polyols such as glycerol and alkylene oxide polymerization products and from other organic compounds containing functional hydroxy groups, for example, partial ethers and esters of glycols and polyols. The polysilicates are injected into a formation through injection wells, suitably in an amount from 10 to 100% of the pore volume of the zone to be treated. In the formation, the polysilicates esters form gels which selectively decrease the permeability of the high permeability regions of the formation, to divert the flow of flooding liquid used in flooding operations to the less permeable regions of the formation.
    • 地下含油地层的渗透性通过注入有机聚硅酸酯酯来控制。 酯可以由二醇如乙二醇,甘油和烯化氧聚合产物等多元醇和其它含有官能羟基的有机化合物衍生自简单的单羟基醇如甲醇,乙醇,丙醇或丁醇,例如, 二醇和多元醇的部分醚和酯。 多孔硅酸盐通过注入孔注入地层,适当地为待处理区域的孔体积的10至100%。 在形成中,多硅酸酯形成凝胶,其选择性地降低地层的高渗透率区域的渗透性,以将用于淹没操作的淹没液体的流动转移到地层的较不可渗透的区域。
    • 25. 发明公开
    • POLYOXALATE AND METHOD FOR PRODUCING SAME
    • POLYOXALAT UND VERFAHREN ZUR HERSTELLUNG DAVON
    • EP3088437A4
    • 2017-08-23
    • EP14874361
    • 2014-12-24
    • TOYO SEIKAN GROUP HOLDINGS LTD
    • YOSHIKAWA SEISHIYAMADA TOSHIKI
    • C08G63/16C08G63/78
    • C08G63/16C08G63/78C09K8/035C09K8/12C09K8/68C09K8/885
    • A polyoxalate containing, as a chief constituent unit, a recurring unit represented by the following formula (1): €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ-(-CO-CO-O-A-O-) n -€ƒ€ƒ€ƒ€ƒ€ƒ(1) wherein n is a positive number, and A is a divalent organic group, and having a quantity of heat of fusion ”Hm of not less than 60 J/g as measured by the DSC in the first time of elevating the temperature and as calculated by the following formula: ”Hm = ”Hm €² ˆ’”Hc wherein, ”Hm' is a quantity of heat of fusion (J/g) inclusive of heat of crystallization while the temperature is being elevated, and ”Hc is a quantity of heat (J/g) generated by the crystallization, permitting the components to be volatilized in an amount of not more than 2.0% by weight when the temperature is elevated up to 200°C as measured by the TGA, and having a 5% weight loss temperature (Td5%) of not higher than 230°C, and a process for the production thereof. The polyoxalate exhibits a highly hydrolysable capability even at low temperatures, can be excellently crushed, i.e., is capable of effectively preventing itself from undergoing the blocking when it is being crushed.
    • 含有以下式(1)表示的重复单元作为主要组成单元的聚草酸酯: - ( - CO-CO-OAO-)n - (1)其中n是正数,A是二价有机基团,并且具有不小于60J / g的熔化热量“Hm” DSC在第一次提升温度并且按照下式计算:“Hm =”Hm“”Hc其中,“Hm”是包括结晶热的熔化热量(J / g) 同时温度升高,并且“Hc是由结晶产生的热量(J / g),当温度升高到200℃时允许组分挥发量不超过2.0重量% ℃,由TGA测量,并且具有不高于230℃的5%重量损失温度(Td5%),及其生产方法。 即使在低温下,聚草酸酯也具有高度水解能力,可以很好地粉碎,即当其被粉碎时能够有效地防止其自身发生粘连。