Methods and compositions of controlling the rheology of a diutan-containing well treatment fluid at high temperatures
    1.
    发明授权
    Methods and compositions of controlling the rheology of a diutan-containing well treatment fluid at high temperatures 有权
    在高温下控制含狄氏剂处理液的流变性的方法和组成

    公开(公告)号:US07595282B2

    公开(公告)日:2009-09-29

    申请号:US11077881

    申请日:2005-03-11

    摘要: The invention provides a method for treating a subterranean formation penetrated by a wellbore, the method comprising the steps of formulating a treatment fluid and introducing the treatment fluid through the wellbore. The treatment fluid comprises water; diutan; and a sufficient amount of salt to increase the density of the treatment fluid to at least 8.5 lb/gal, wherein at least 50% by weight of the salt is selected from the group consisting of: bromide salts, non-bromide salts having a higher salting-in effect than bromide according to the Hofmeister series as measured by the salt's effect on the cloud point of poly(ethylene oxide) that has a molecular weight of 4×106, and any combination in any proportion thereof. The invention also provides a treatment fluid for use in a subterranean formation penetrated by a wellbore, the treatment fluid comprising: water; diutan; and a sufficient amount of salt to increase the density of the treatment fluid to at least 8.5 lb/gal, wherein at least 50% by weight of the salt is selected from the group consisting of: bromide salts, non-bromide salts having a higher salting-in effect than bromide according to the Hofmeister series as measured by the salt's effect on the cloud point of poly(ethylene oxide) that has a molecular weight of 4.106, and any combination in any proportion thereof.

    摘要翻译: 本发明提供了一种处理井眼穿透的地层的方法,所述方法包括配制处理流体并通过井筒引入处理流体的步骤。 处理液包含水; di an 和足够量的盐以将处理流体的密度增加至至少8.5lb / gal,其中至少50重量%的盐选自:溴化物盐,具有较高浓度的溴化物盐,非溴化物盐 通过盐对分子量为4×10 6的聚(环氧乙烷)的浊点的影响测定的Hofmeister系列的盐析效果以及任何比例的任何组合。 本发明还提供一种用于在井眼穿透的地层中的处理流体,所述处理流体包括:水; di an 和足够量的盐以将处理流体的密度增加至至少8.5lb / gal,其中至少50重量%的盐选自:溴化物盐,具有较高浓度的溴化物盐,非溴化物盐 通过盐对分子量为4.106的聚(环氧乙烷)的浊点的影响测定的根据Hofmeister系列的溴化物的盐析效果以及任何比例的任何组合。

    Methods and compositions of controlling the rheology of a diutan-containing well treatment fluid at high temperatures
    2.
    发明申请
    Methods and compositions of controlling the rheology of a diutan-containing well treatment fluid at high temperatures 有权
    在高温下控制含狄氏剂处理液的流变性的方法和组成

    公开(公告)号:US20060205606A1

    公开(公告)日:2006-09-14

    申请号:US11077881

    申请日:2005-03-11

    IPC分类号: C09K8/00 E21B43/00

    摘要: The invention provides a method for treating a subterranean formation penetrated by a wellbore, the method comprising the steps of formulating a treatment fluid and introducing the treatment fluid through the wellbore. The treatment fluid comprises water; diutan; and a sufficient amount of salt to increase the density of the treatment fluid to at least 8.5 lb/gal, wherein at least 50% by weight of the salt is selected from the group consisting of: bromide salts, non-bromide salts having a higher salting-in effect than bromide according to the Hofmeister series as measured by the salt's effect on the cloud point of poly(ethylene oxide) that has a molecular weight of 4×106, and any combination in any proportion thereof. The invention also provides a treatment fluid for use in a subterranean formation penetrated by a wellbore, the treatment fluid comprising: water; diutan; and a sufficient amount of salt to increase the density of the treatment fluid to at least 8.5 lb/gal, wherein at least 50% by weight of the salt is selected from the group consisting of: bromide salts, non-bromide salts having a higher salting-in effect than bromide according to the Hofmeister series as measured by the salt's effect on the cloud point of poly(ethylene oxide) that has a molecular weight of 4.106, and any combination in any proportion thereof.

    摘要翻译: 本发明提供了一种处理井眼穿透的地层的方法,所述方法包括配制处理流体并通过井筒引入处理流体的步骤。 处理液包含水; di an 和足够量的盐以将处理流体的密度增加至至少8.5lb / gal,其中至少50重量%的盐选自:溴化物盐,具有较高浓度的溴化物盐,非溴化物盐 通过盐对分子量为4×10 6的聚(环氧乙烷)的浊点的影响测定的根据Hofmeister系列的盐析效果,以及任何组合 。 本发明还提供一种用于在井眼穿透的地层中的处理流体,所述处理流体包括:水; di an 和足够量的盐以将处理流体的密度增加至至少8.5lb / gal,其中至少50重量%的盐选自:溴化物盐,具有较高浓度的溴化物盐,非溴化物盐 通过盐对分子量为4.10〜6的聚(环氧乙烷)的浊点的影响测定的根据Hofmeister系列的溴化物的盐析效果以及任何比例的组合 。

    Methods and compositions of controlling the rheology of a diutan-containing well treatment fluid at high temperatures
    3.
    发明申请
    Methods and compositions of controlling the rheology of a diutan-containing well treatment fluid at high temperatures 有权
    在高温下控制含狄氏剂处理液的流变性的方法和组成

    公开(公告)号:US20080220992A9

    公开(公告)日:2008-09-11

    申请号:US11077881

    申请日:2005-03-11

    IPC分类号: C09K8/00 E21B43/00

    摘要: The invention provides a method for treating a subterranean formation penetrated by a wellbore, the method comprising the steps of formulating a treatment fluid and introducing the treatment fluid through the wellbore. The treatment fluid comprises water; diutan; and a sufficient amount of salt to increase the density of the treatment fluid to at least 8.5 lb/gal, wherein at least 50% by weight of the salt is selected from the group consisting of: bromide salts, non-bromide salts having a higher salting-in effect than bromide according to the Hofmeister series as measured by the salt's effect on the cloud point of poly(ethylene oxide) that has a molecular weight of 4×106, and any combination in any proportion thereof. The invention also provides a treatment fluid for use in a subterranean formation penetrated by a wellbore, the treatment fluid comprising: water; diutan; and a sufficient amount of salt to increase the density of the treatment fluid to at least 8.5 lb/gal, wherein at least 50% by weight of the salt is selected from the group consisting of: bromide salts, non-bromide salts having a higher salting-in effect than bromide according to the Hofmeister series as measured by the salt's effect on the cloud point of poly(ethylene oxide) that has a molecular weight of 4.106, and any combination in any proportion thereof.

    摘要翻译: 本发明提供了一种处理井眼穿透的地层的方法,所述方法包括配制处理流体并通过井筒引入处理流体的步骤。 处理液包含水; di an 和足够量的盐以将处理流体的密度增加至至少8.5lb / gal,其中至少50重量%的盐选自:溴化物盐,具有较高浓度的溴化物盐,非溴化物盐 通过盐对分子量为4×10 6的聚(环氧乙烷)的浊点的影响测定的根据Hofmeister系列的盐析效果,以及任何组合 。 本发明还提供一种用于在井眼穿透的地层中的处理流体,所述处理流体包括:水; di an 和足够量的盐以将处理流体的密度增加至至少8.5lb / gal,其中至少50重量%的盐选自:溴化物盐,具有较高浓度的溴化物盐,非溴化物盐 通过盐对分子量为4.10〜6的聚(环氧乙烷)的浊点的影响测定的根据Hofmeister系列的溴化物的盐析效果以及任何比例的组合 。