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公开(公告)号：US20110152136A1
公开(公告)日：2011-06-23
申请号：US12988867
申请日：2009-04-23
申请人： Trevor Hughes , Gary Tustin , Alexander Wilson , Carlos Abad
发明人： Trevor Hughes , Gary Tustin , Alexander Wilson , Carlos Abad
IPC分类号： C09K8/64
CPC分类号： C09K8/594 , C09K8/524 , Y02P20/544
摘要： The recovery of oil from a reservoir is assisted by injecting a diluent into the reservoir formation to reduce the viscosity of the crude oil. This diluent is a mixture of a material which is an asphaltene precipitant, especially supercritical carbon dioxide, and a more polar material which comprises at least one aliphatic compound which includes at least one of a cycloaliphatic ring, an olefinic unsaturation, an ester or ether group. The inclusion of such an aliphatic compound which is more polar than the asphaltene precipitant reduces asphaltene precipitation and can enhance the efficiency of oil recovery when the precipitant is by supercritical carbon dioxide.
摘要翻译： 通过将稀释剂注入储层地层来帮助从储层中回收油以降低原油的粘度。 该稀释剂是沥青质沉淀剂，特别是超临界二氧化碳的材料和更极性的材料的混合物，其包含至少一种脂族化合物，其包括脂环族环，烯属不饱和键，酯或醚基中的至少一种 。 包含比沥青质沉淀剂更极性的这种脂族化合物减少了沥青质沉淀，并且当沉淀物是通过超临界二氧化碳时可以提高油回收的效率。
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公开(公告)号：US20110172924A1
公开(公告)日：2011-07-14
申请号：US12988869
申请日：2009-04-23
申请人： Trevor Hughes , Gary Tustin , Alexander Wilson , Carlos Abad , Shiyi Wang
发明人： Trevor Hughes , Gary Tustin , Alexander Wilson , Carlos Abad , Shiyi Wang
IPC分类号： G06F19/00
CPC分类号： E21B43/164 , C09K8/594 , Y02P20/544
摘要： The magnitude of asphaltic precipitation when injecting a viscosity reducing diluent into a reservoir formation, notably to assist oil recovery therefrom, is forecast by (i) determining a relationship between asphaltic precipitation and a solubility parameter for the diluted oil, and then (ii) utilizing that relationship to forecast the magnitude of asphaltic precipitation when injecting a predetermined viscosity reducing diluent into the formation. Making this forecast may be followed by injecting a viscosity reducing diluent into the formation to assist oil recovery. The diluent may in particular be supercritical carbon dioxide or other asphaltene precipitant mixed with a more polar material in proportions designed by forecasting asphaltic precipitation by candidate materials in possible proportions.
摘要翻译： 通过（i）确定沥青沉淀与稀释油的溶解度参数之间的关系，然后（ii）利用（i）确定沥青沉淀与稀释油的溶解度参数之间的关系，预测将注入减粘稀释剂注入储层形成中的沥青沉淀的大小， 该关系可以预测在将预定的减粘稀释剂注入到地层中时沥青沉淀的大小。 进行此预测之后，可以将降粘稀释剂注入地层以辅助石油回收。 稀释剂可以特别是超临界二氧化碳或其他沥青质沉淀剂与较极性的材料混合，其比例是以可能的比例预测候选材料的沥青沉淀所设计的比例。
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公开(公告)号：US08846582B2
公开(公告)日：2014-09-30
申请号：US12988867
申请日：2009-04-23
申请人： Trevor Hughes , Gary Tustin , Alexander Wilson , Carlos Abad
发明人： Trevor Hughes , Gary Tustin , Alexander Wilson , Carlos Abad
CPC分类号： C09K8/594 , C09K8/524 , Y02P20/544
摘要： The recovery of oil from a reservoir is assisted by injecting a diluent into the reservoir formation to reduce the viscosity of the crude oil. This diluent is a mixture of a material which is an asphaltene precipitant, especially supercritical carbon dioxide, and a more polar material which comprises at least one aliphatic compound which includes at least one of a cycloaliphatic ring, an olefinic unsaturation, an ester or ether group. The inclusion of such an aliphatic compound which is more polar than the asphaltene precipitant reduces asphaltene precipitation and can enhance the efficiency of oil recovery when the precipitant is by supercritical carbon dioxide.
摘要翻译： 通过将稀释剂注入储层地层来帮助从储层中回收油以降低原油的粘度。 该稀释剂是沥青质沉淀剂，特别是超临界二氧化碳的材料和更极性的材料的混合物，其包含至少一种脂族化合物，其包括脂环族环，烯属不饱和键，酯或醚基中的至少一种 。 包含比沥青质沉淀剂更极性的这种脂族化合物减少了沥青质沉淀，并且当沉淀物是通过超临界二氧化碳时可以提高油回收的效率。
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公开(公告)号：US08688383B2
公开(公告)日：2014-04-01
申请号：US12988869
申请日：2009-04-23
申请人： Trevor Hughes , Gary Tustin , Alexander Wilson , Carlos Abad , Shiyi Wang
发明人： Trevor Hughes , Gary Tustin , Alexander Wilson , Carlos Abad , Shiyi Wang
IPC分类号： G06F19/00
CPC分类号： E21B43/164 , C09K8/594 , Y02P20/544
摘要： The magnitude of asphaltic precipitation when injecting a viscosity reducing diluent into a reservoir formation, notably to assist oil recovery therefrom, is forecast by (i) determining a relationship between asphaltic precipitation and a solubility parameter for the diluted oil, and then (ii) utilizing that relationship to forecast the magnitude of asphaltic precipitation when injecting a predetermined viscosity reducing diluent into the formation. Making this forecast may be followed by injecting a viscosity reducing diluent into the formation to assist oil recovery. The diluent may in particular be supercritical carbon dioxide or other asphaltene precipitant mixed with a more polar material in proportions designed by forecasting asphaltic precipitation by candidate materials in possible proportions.
摘要翻译： 通过（i）确定沥青沉淀与稀释油的溶解度参数之间的关系，然后（ii）利用（i）确定沥青沉淀与稀释油的溶解度参数之间的关系，预测将注入减粘稀释剂注入储层形成中的沥青沉淀的大小， 该关系可以预测在将预定的减粘稀释剂注入到地层中时沥青沉淀的大小。 进行此预测之后，可以将降粘稀释剂注入地层以辅助石油回收。 稀释剂可以特别是超临界二氧化碳或其他沥青质沉淀剂与较极性的材料混合，其比例是以可能的比例预测候选材料的沥青沉淀所设计的比例。
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公开(公告)号：US20090075845A1
公开(公告)日：2009-03-19
申请号：US11794923
申请日：2006-01-11
申请人： Carlos Abad , Kay Robinson , Trevor Hughes
发明人： Carlos Abad , Kay Robinson , Trevor Hughes
IPC分类号： C08F251/00 , C09K8/24
摘要： A viscosifying agent for wellbore fluids is described including a polymer polymerized using at least two pre-polymers “A” and “B”, the polymer being capable of essentially fully degrading into soluble fragments after the initiation of a breaking process.
摘要翻译： 描述了用于井筒流体的增稠剂，其包括使用至少两种预聚物“A”和“B”聚合的聚合物，该聚合物在断裂过程开始之后能够基本上完全降解成可溶性碎片。
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公开(公告)号：US07858561B2
公开(公告)日：2010-12-28
申请号：US11794923
申请日：2006-01-11
申请人： Carlos Abad , Kay Robinson , Trevor Hughes
发明人： Carlos Abad , Kay Robinson , Trevor Hughes
摘要： A viscosifying agent for wellbore fluids is described including a polymer polymerized using at least two pre-polymers “A” and “B”, the polymer being capable of essentially fully degrading into soluble fragments after the initiation of a breaking process.
摘要翻译： 描述了用于井筒流体的增稠剂，其包括使用至少两种预聚物“A”和“B”聚合的聚合物，该聚合物在断裂过程开始之后能够基本上完全降解成可溶性碎片。
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公开(公告)号：US08393395B2
公开(公告)日：2013-03-12
申请号：US12477442
申请日：2009-06-03
申请人： Thomas Cochet , Trevor Hughes , Slaheddine Kefi , Valerie Lafitte , Khooi Tan , Gary Tustin , Shiyi Wang
发明人： Thomas Cochet , Trevor Hughes , Slaheddine Kefi , Valerie Lafitte , Khooi Tan , Gary Tustin , Shiyi Wang
摘要： A process for hydraulic fracturing of a subterranean reservoir formation penetrated by a wellbore includes pumping a fracturing fluid or other aqueous fluid from the surface via the wellbore and into the reservoir. This fluid is an aqueous suspension of particles which each comprise an oilfield chemical distributed within an encapsulating matrix of water-insoluble carrier material. The encapsulating matrix is chosen so as to provide a delayed release of the oilfield chemical from the particles into surrounding fluid, such that oilfield chemical is liberated from the particles after they have entered the fracture. The encapsulating matrix may be a polymer which is at least partially amorphous, with a glass transition temperature below the reservoir temperature.
摘要翻译： 由井筒穿透的地下储层地层的水力压裂过程包括从表面经由井孔泵送压裂流体或其它含水流体并进入储层。 该流体是颗粒的水性悬浮液，每个颗粒包含分布在水不溶性载体材料的包封基质内的油田化学品。 选择密封基质以便将油田化学品从颗粒延迟释放到周围的流体中，使得油田化学品在进入裂缝之后从颗粒中释放出来。 封装基质可以是至少部分无定形的聚合物，其玻璃化转变温度低于储层温度。
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公开(公告)号：US20100307744A1
公开(公告)日：2010-12-09
申请号：US12477442
申请日：2009-06-03
申请人： Thomas Cochet , Trevor Hughes , Slaheddine Kefi , Valerie Lafitte , Khooi Tan , Gary Tustin , Shiyi Wang
发明人： Thomas Cochet , Trevor Hughes , Slaheddine Kefi , Valerie Lafitte , Khooi Tan , Gary Tustin , Shiyi Wang
IPC分类号： E21B43/26 , E21B47/00 , E21B43/267
摘要： A process for hydraulic fracturing of a subterranean reservoir formation penetrated by a wellbore includes pumping a fracturing fluid or other aqueous fluid which is an aqueous suspension of particles which each comprise an oilfield chemical distributed within an encapsulating matrix of water-insoluble carrier_material from the surface via the wellbore and into the reservoir. The encapsulating matrix is chosen so as to provide a delayed release of the oilfield chemical from the particles into surrounding fluid, such that oilfield chemical is liberated from the particles after they have entered the fracture. The encapsulating matrix may be a polymer which is at least partially amorphous, with a glass transition temperature below the reservoir temperature.
摘要翻译： 由井筒穿透的地下储层地层的水力压裂过程包括泵送压裂液或其它含水流体，其是颗粒的水性悬浮液，每个颗粒包含分布在水不溶性载体材料的包封基质内的油田化学物质，从表面通过 井筒进入水库。 选择密封基质以便将油田化学品从颗粒延迟释放到周围的流体中，使得油田化学品在进入裂缝之后从颗粒中释放出来。 封装基质可以是至少部分无定形的聚合物，其玻璃化转变温度低于储层温度。
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公开(公告)号：US08517102B2
公开(公告)日：2013-08-27
申请号：US12738853
申请日：2008-11-26
申请人： Philip Sullivan , Gary Tustin , Yenny Christanti , Gregory Kubala , Bruno Drochon , Trevor Hughes
发明人： Philip Sullivan , Gary Tustin , Yenny Christanti , Gregory Kubala , Bruno Drochon , Trevor Hughes
IPC分类号： E21B43/22
摘要： A thickened aqueous composition is delivered to a subterranean location accessible via a wellbore by steps of i. providing a biphasic aqueous mixture comprising two aqueous solutions which, at surface temperature and pressure, are able to co-exist as separate aqueous phases in contact with each other, ii. pumping said biphasic aqueous system down the wellbore to the subterranean location, and iii. converting the biphasic mixture below ground so that its phases combine into a single aqueous phase which is more viscous than the biphasic mixture. The two phases of the aqueous biphasic mixture contain dissolved solutes which segregate between the two phases such that at least one first solute is present at a greater concentration in the first aqueous phase than in the second aqueous phase while at least one second solute is present at a greater concentration in the second aqueous phase than in the first aqueous phase. The solute in the first phase may be a thickening polymer or other thickening material such as viscoelastic surfactant. The solute in the second phase may be a different polymer, surfactant or salt. Conversion to a single phase may be carried out in various ways including dilution, change in pH, change in salinity, increase in temperature and adsorption of one solute onto formation rock.
摘要翻译： 增稠的水性组合物被递送到通过i的步骤可通过井筒接近的地下位置。 提供包含两种水溶液的双相含水混合物，其在表面温度和压力下能够作为彼此接触的分离的水相共存，ii。 将井眼中的双相水相系统泵送到地下位置，以及iii。 将两相混合物转化成地下，使其相结合成单一的水相，其比双相混合物更粘稠。 水相两相混合物的两相含有在两相之间分离的溶解的溶质，使得至少一种第一溶质在第一水相中的浓度比在第二水相中以更高的浓度存在，而至少一种第二溶质存在于 在第二水相中比在第一水相中浓度更高。 第一相中的溶质可以是增稠聚合物或其它增稠材料如粘弹性表面活性剂。 第二相中的溶质可以是不同的聚合物，表面活性剂或盐。 转化为单相可以以各种方式进行，包括稀释，pH变化，盐度变化，温度升高和一种溶质在地层岩石上的吸附。
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公开(公告)号：US20100276150A1
公开(公告)日：2010-11-04
申请号：US12738853
申请日：2008-11-26
申请人： Philip Sullivan , Gary Tustin , Yenny Christanti , Gregory Kubala , Bruno Drocho , Trevor Hughes
发明人： Philip Sullivan , Gary Tustin , Yenny Christanti , Gregory Kubala , Bruno Drocho , Trevor Hughes
IPC分类号： E21B43/16
摘要： A thickened aqueous composition is delivered to a subterranean location accessible via a wellbore by steps of i. providing a biphasic aqueous mixture comprising two aqueous solutions which, at surface temperature and pressure, are able to co-exist as separate aqueous phases in contact with each other, ii. pumping said biphasic aqueous system down the wellbore to the subterranean location, and iii. converting the biphasic mixture below ground so that its phases combine into a single aqueous phase which is more viscous than the biphasic mixture. The two phases of the aqueous biphasic mixture contain dissolved solutes which segregate between the two phases such that at least one first solute is present at a greater concentration in the first aqueous phase than in the second aqueous phase while at least one second solute is present at a greater concentration in the second aqueous phase than in the first aqueous phase. The solute in the first phase may be a thickening polymer or other thickening material such as viscoelastic surfactant. The solute in the second phase may be a different polymer, surfactant or salt. Conversion to a single phase may be carried out in various ways including dilution, change in pH, change in salinity, increase in temperature and adsorption of one solute onto formation rock.
摘要翻译： 增稠的水性组合物被递送到通过i的步骤可通过井筒接近的地下位置。 提供包含两种水溶液的双相含水混合物，其在表面温度和压力下能够作为彼此接触的分离的水相共存，ii。 将井眼中的双相水相系统泵送到地下位置，以及iii。 将两相混合物转化成地下，使其相结合成单一的水相，其比双相混合物更粘稠。 水相两相混合物的两相含有在两相之间分离的溶解的溶质，使得至少一种第一溶质在第一水相中的浓度比在第二水相中以更高的浓度存在，而至少一种第二溶质存在于 在第二水相中比在第一水相中浓度更高。 第一相中的溶质可以是增稠聚合物或其它增稠材料如粘弹性表面活性剂。 第二相中的溶质可以是不同的聚合物，表面活性剂或盐。 转化为单相可以以各种方式进行，包括稀释，pH变化，盐度变化，温度升高和一种溶质在地层岩石上的吸附。
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