A NOVEL HIGH PRESSURE HIGH TEMPERATURE (HPHT) AQUEOUS DRILLING MUD COMPOSITION AND PROCESS FOR PREPARING THE SAME
    1.
    发明申请
    A NOVEL HIGH PRESSURE HIGH TEMPERATURE (HPHT) AQUEOUS DRILLING MUD COMPOSITION AND PROCESS FOR PREPARING THE SAME 审中-公开
    新型高压高温(HPHT)水性钻头组合物及其制备方法

    公开(公告)号:US20150368538A1

    公开(公告)日:2015-12-24

    申请号:US14766507

    申请日:2014-02-18

    CPC classification number: C09K8/24 C09K8/18 E21B7/00 E21B43/16

    Abstract: What is described herein is an aqueous high-temperature high-pressure (HTHP) stable drilling mud composition comprising (i) about 20 wt. % to about 80 wt. % of 0-60% w/w brine solution; (ii) about 0.1 wt. % to about 3 wt. % of butylated reaction product of p-cresol and dicyclopentadiene, a polymeric hindered phenol based antioxidant; (iii) about 0.1 wt. % to about 10.0 wt. % of triethanol amine, a chelating agent; (iv) (a) about 0.1 wt. % to about 10 wt. % of rheology modifier (RM); and/or (b) about 0.5 wt. % to about 30 wt. % of fluid loss additive (FLA); (v) about 20 wt. % to about 80 wt. % of weighting agent; (vi) about 0 wt. % to about 20 wt. % of drilling solid; and (vii) about 0 wt. % to about 50 wt % of water.

    Abstract translation: 本文所述的是含水高温高压(HTHP)稳定的钻井泥浆组合物,其包含(i)约20wt。 %至约80wt。 %0-60%w / w盐水溶液% (ii)约0.1wt。 %至约3wt。 对甲酚和二环戊二烯的丁基化反应产物的%,聚合的受阻酚类抗氧化剂; (iii)约0.1wt。 %至约10.0重量% %三乙醇胺,螯合剂; (iv)(a)约0.1wt。 %至约10wt。 %流变改性剂(RM); 和/或(b)约0.5wt。 %至约30wt。 %的流体损失添加剂(FLA); (v)约20wt。 %至约80wt。 加权代理的百分比 (vi)约0wt。 %至约20wt。 钻井固体的百分比; 和(vii)约0wt。 %至约50wt%的水。

    FLUID COMPOSITION COMPRISING CROSSLINKED POLYVINYLPYRROLIDONE FOR OIL FIELD APPLICATIONS
    3.
    发明申请
    FLUID COMPOSITION COMPRISING CROSSLINKED POLYVINYLPYRROLIDONE FOR OIL FIELD APPLICATIONS 审中-公开
    用于油田应用的包含交联聚乙烯吡咯烷酮的流体组合物

    公开(公告)号:US20160215196A1

    公开(公告)日:2016-07-28

    申请号:US14915501

    申请日:2014-07-30

    Abstract: Disclosed herein is a water based High-Temperature High-Pressure (HTHP) fluid composition having a density of about 8.3 to about 21.0 ppg, comprising: (i) a brine based fluid; (ii) about 0.5 ppb to about 20 ppb of crosslinked polyvinylpyrrolidone (PVP); (iii) about 5 ppb to about 100 ppb of bridging agents selected from the group consisting of CaCO3 and sized salts; and (iv) optionally about 0 ppb to about 25 ppb of Fluids Loss Additives (FLA), wherein the crosslinked PVP is prepared by precipitation polymerization of vinylpyrrolidone (VP) in an organic solvent in the presence of a crosslinking agent and a free radical polymerization initiator, wherein the crosslinking agent is present in an amount of from about 0.1 wt. % to about 5.0 wt. % based on the weight of the vinylpyrrolidone. Also discloses a method of drilling and completing operations in a subterranean formation.

    Abstract translation: 本文公开了具有约8.3至约21.0ppg的密度的水基高温高压(HTHP)流体组合物,其包含:(i)盐水基流体; (ii)约0.5ppb至约20ppb的交联聚乙烯吡咯烷酮(PVP); (iii)约5ppb至约100ppb的选自CaCO 3和大小的盐的桥连剂; 和(iv)任选的约0ppb至约25ppb的流体损失添加剂(FLA),其中交联的PVP通过乙烯基吡咯烷酮(VP)在有机溶剂中在交联剂和自由基聚合的存在下的沉淀聚合制备 引发剂,其中交联剂的存在量为约0.1wt。 %至约5.0wt。 基于乙烯基吡咯烷酮的重量。 还公开了一种在地层中钻井和完成作业的方法。

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