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    • 5. 发明申请
    • METHYLHYDROXYETHYL CELLULOSE AS CEMENT ADDITIVE FOR USE AT ELEVATED TEMPERATURES
    • 甲基羟基乙基纤维素作为在高温下使用的水泥添加剂
    • WO2016115005A1
    • 2016-07-21
    • PCT/US2016/012792
    • 2016-01-11
    • DOW GLOBAL TECHNOLOGIES LLC
    • PATIL, Pramod D.HILD, Alexandra
    • C04B24/38C04B28/02C09K8/487C09K8/493
    • C09K8/487C04B24/383C04B28/02C09K8/493
    • Disclosed is an aqueous cementing slurry composition and a method of use thereof for cementing a pipe or casing in a borehole of a well using an aqueous cementing slurry composition comprising (a) a hydraulic cement, (b) a methylhydroxyethyl cellulose (HEMC) having an ethylene oxide molar substitution (EO MS) of from 0.16 to 0.22 and a methyl degree of substitution (M DS) of from 1.35 to 1.45, (c) water, and optionally (d) one or more other additives conventionally added to aqueous cementing compositions useful in cementing casings in the borehole of wells. Preferably, the aqueous cementing slurry composition is pumped downwardly into said casing, pumped upwardly into the annulus surrounding said casing until said aqueous composition fills that portion of the annular space desired to be sealed, and then maintaining said aqueous cementing composition in place until the cement sets.
    • 本发明公开了一种含水胶结剂浆料组合物及其使用方法,该方法用于使用水性胶结剂浆料组合物将井筒或井筒固定在井眼中,所述水泥固井浆料组合物包含(a)水硬性水泥,(b)甲基羟乙基纤维素(HEMC) 环氧乙烷摩尔取代度(EO MS)为0.16至0.22,甲基取代度(M DS)为1.35至1.45,(c)水和任选(d)一种或多种常规添加到含水胶结剂组合物中的添加剂 可用于固井井眼井底。 优选地,将水性固井浆料组合物向下泵送到所述壳体中,向上泵入围绕所述壳体的环形空间,直到所述含水组合物填充期望密封的环形空间的那部分,然后将所述水性固井组合物保持在适当位置,直到水泥 集。