Method and composition of preparing polymeric fracturing fluids
    21.
    发明授权
    Method and composition of preparing polymeric fracturing fluids 有权
    制备聚合物压裂液的方法和组成

    公开(公告)号:US07497263B2

    公开(公告)日:2009-03-03

    申请号:US11285440

    申请日:2005-11-22

    IPC分类号: E21B43/26

    摘要: In the presence of certain polyols, a guar gum or similar polysaccharide thickener solution is boron crosslinked before achievement of complete hydration of the thickener, without compromising the viscosity level achieved in a fracturing fluid by the time it is pumped into the wellbore and fractures the subterranean formation adjacent the wellbore. Methods continuously involve hydrating a polysaccharide thickener to an extent of 10% to 75%, but less than full hydration. Before 75% hydration is exceeded, a boron crosslinker is added. Upon addition of the boron crosslinker, the fluid is injected into the wellbore to stimulate hydrocarbon production. Because less time is needed for hydration, well site mixing equipment is down-sized smaller to achieve better efficiency and cost savings.

    摘要翻译: 在存在某些多元醇的情况下,瓜尔胶或类似的多糖增稠剂溶液在实现增稠剂的完全水合之前是交联的硼,而不损害在压裂液被泵入井眼中时达到的粘度水平,并破裂了地下 形成在井眼附近。 方法连续地将多糖增稠剂水合至10%至75%,但不足全水合。 在超过75%水合之前,加入硼交联剂。 加入硼交联剂后,将流体注入井眼以刺激烃的生产。 由于水合时间较短,井场混合设备规模较小,可实现更好的效率和成本节约。

    Well Treatment with Ionic Polymer Gels
    22.
    发明申请
    Well Treatment with Ionic Polymer Gels 有权
    用离子聚合物凝胶处理好

    公开(公告)号:US20080280788A1

    公开(公告)日:2008-11-13

    申请号:US12116759

    申请日:2008-05-07

    IPC分类号: C09K8/68

    摘要: Methods comprising preparing an aqueous mixture of an anionic polymer, a charge screening surfactant, and a borate crosslinker, wherein the mixture has a conductivity less than 10 mS/cm, injecting the mixture down a wellbore, and gelling the mixture. An embodiment of the aqueous mixture can also include tetramethylammonium chloride as a clay stabilizer and a metal crosslinker such as a complex of zirconium and an amino acid ligand system. An embodiment can effectively provide borate crosslinking of an anionic polymer in a low-ionic-strength fluid system, without sacrificing ultimate gel strength or thermal persistence of the metal crosslinked polymer.

    摘要翻译: 方法包括制备阴离子聚合物,电荷筛选表面活性剂和硼酸盐交联剂的水性混合物,其中混合物具有小于10mS / cm的电导率,将混合物向下注入井眼,并使混合物胶凝。 水性混合物的一个实施方案还可以包括作为粘土稳定剂的四甲基氯化铵和诸如锆和氨基酸配体体系的金属交联剂。 一个实施方案可以有效地提供阴离子聚合物在低离子强度流体系统中的硼酸盐交联,而不会牺牲金属交联聚合物的最终凝胶强度或热持久性。

    Method of Treating a Subterranean Formation using a Rheology Model for Fluid Optimization
    24.
    发明申请
    Method of Treating a Subterranean Formation using a Rheology Model for Fluid Optimization 有权
    用流体优化流变学模型处理地层的方法

    公开(公告)号:US20070169932A1

    公开(公告)日:2007-07-26

    申请号:US11625105

    申请日:2007-01-19

    IPC分类号: E21B47/10 E21B43/26

    摘要: Subterranean formation treatment methods incorporating a rheology model which enables prediction of fluid rheology properties during a treatment operation, where the foundation of the model is a description of the reaction chemistry which describes how the number of crosslinks and broken polymer linkages develops in time under the influence of crosslinkers, breakers, and/or thermally induced effects and pressure effects. In one aspect, when used as a tool for simulating the fluid viscosity, the model can help optimizing the fluid design and optional breaker schedule for a hydraulic fracturing treatment.

    摘要翻译: 包含流变学模型的地层形成处理方法,其能够在处理操作期间预测流体流变学性质,其中模型的基础是描述反应化学性质的描述,其描述了在影响下如何在时间上发生交联和断裂的聚合物键的数量 的交联剂,破裂剂和/或热诱导效应和压力效应。 在一个方面,当用作模拟流体粘度的工具时,该模型可以帮助优化流体设计和用于水力压裂处理的可选的断路器时间表。

    High temperature hydraulic fracturing fluid
    25.
    发明授权
    High temperature hydraulic fracturing fluid 有权
    高温水力压裂液

    公开(公告)号:US06227295B1

    公开(公告)日:2001-05-08

    申请号:US09415400

    申请日:1999-10-08

    IPC分类号: E21B4326

    摘要: A fluid that is useful in stimulation operations, and in particular, in hydraulic fracturing treatments, comprises a carrier fluid; a solvatable, crosslinkable polymer; a cross-linking agent that does not cause substantial cross-linking of the polymer at temperatures less than about 105° F. and a pH of about 10 or greater; and an organic amine stabilizing agent that has a first pKa or a pH in water of at least about 9.5. One group of such amines has the formula H2N—(R1NH)n—H where R1 is C1-C4 alkyl and n is from 1-6. In one embodiment, the cross-linking agent is an organic zirconate, such as bis(hydroxyethyl)glycine zirconate. The organic zirconate is effective to cross-link the polymer when the composition is at a temperature of at least about 105° F., and a pH of about 10 or higher, preferably a pH in the range of about 10.5-12.

    摘要翻译: 在刺激操作中,特别是在水力压裂处理中有用的流体包括载体流体; 可溶解的可交联聚合物; 在低于约105°F的温度和约10或更大的pH的温度下不引起聚合物的实质交联的交联剂; 和具有至少约9.5的第一pKa或水中的pH的有机胺稳定剂。 一类这样的胺具有其中R 1是C 1 -C 4烷基,n是1-6。 在一个实施方案中,交联剂是有机锆酸酯,例如双(羟乙基)甘氨酸锆酸酯。 当组合物处于至少约105°F的温度和约10或更高的pH,优选约10.5-12的pH时,有机锆酸酯可有效交联聚合物。

    Crosslinker suspension compositions and uses thereof
    27.
    发明授权
    Crosslinker suspension compositions and uses thereof 有权
    交联剂悬浮液组合物及其用途

    公开(公告)号:US07968501B2

    公开(公告)日:2011-06-28

    申请号:US11554917

    申请日:2006-10-31

    申请人: Michael D. Parris

    发明人: Michael D. Parris

    CPC分类号: C09K8/685

    摘要: A delayed crosslinker system useful in downhole treatment fluids is disclosed. The crosslinker system comprises water-reactive solids, a non-aqueous, non-oily, hygroscopic liquid, a suspension aid, and an optional polyol. The crosslinker system may be prepared at a remote location and transported to the site of its intended use. There it may be pumped into a formation and activated when a gel fluid is introduced into the wellbore, only then forming a high viscosity treatment fluid. Thus, the amount of energy required for pumping is reduced. The optional polyol component increases crosslink delay and enhances the rate of viscosity after high shear (shear recovery).

    摘要翻译: 公开了一种用于井下处理流体的延迟交联剂体系。 交联剂体系包括水反应性固体,非水性,非油性,吸湿性液体,悬浮助剂和任选的多元醇。 交联剂系统可以在远程位置制备并运送到其预期用途的位置。 当将凝胶流体引入井筒中时,可以将其泵送到地层中并激活,然后仅形成高粘度处理流体。 因此,泵送所需的能量减少。 任选的多元醇组分增加交联延迟并增加高剪切后的粘度(剪切恢复)速率。

    Well treatment with ionic polymer gels
    28.
    发明授权
    Well treatment with ionic polymer gels 有权
    用离子聚合物凝胶处理好

    公开(公告)号:US07786050B2

    公开(公告)日:2010-08-31

    申请号:US12116759

    申请日:2008-05-07

    IPC分类号: C09K8/68 C09K8/60 C09K8/524

    摘要: Methods comprising preparing an aqueous mixture of an anionic polymer, a charge screening surfactant, and a borate crosslinker, wherein the mixture has a conductivity less than 10 mS/cm, injecting the mixture down a wellbore, and gelling the mixture. An embodiment of the aqueous mixture can also include tetramethylammonium chloride as a clay stabilizer and a metal crosslinker such as a complex of zirconium and an amino acid ligand system. An embodiment can effectively provide borate crosslinking of an anionic polymer in a low-ionic-strength fluid system, without sacrificing ultimate gel strength or thermal persistence of the metal crosslinked polymer.

    摘要翻译: 方法包括制备阴离子聚合物,电荷筛选表面活性剂和硼酸盐交联剂的水性混合物,其中混合物具有小于10mS / cm的电导率,将混合物向下注入井眼,并使混合物胶凝。 水性混合物的一个实施方案还可以包括作为粘土稳定剂的四甲基氯化铵和诸如锆和氨基酸配体体系的金属交联剂。 一个实施方案可以有效地提供阴离子聚合物在低离子强度流体系统中的硼酸盐交联,而不会牺牲金属交联聚合物的最终凝胶强度或热持久性。

    METHOD FOR TREATING WELL BORE IN A SUBTERRANEAN FORMATION WITH HIGH DENSITY BRINES AND COMPLEXED METAL CROSSLINKERS
    29.
    发明申请
    METHOD FOR TREATING WELL BORE IN A SUBTERRANEAN FORMATION WITH HIGH DENSITY BRINES AND COMPLEXED METAL CROSSLINKERS 有权
    用高密度玻璃和复合金属交联剂处理地下层形成井眼的方法

    公开(公告)号:US20100130388A1

    公开(公告)日:2010-05-27

    申请号:US12643387

    申请日:2009-12-21

    IPC分类号: C09K8/68

    摘要: The invention discloses a method of treating a wellbore by providing an aqueous mixture of a hydrated polysaccharide with a salt; adding to the mixture a cross-linking agent for cross-linking the hydrated polysaccharide, wherein the cross-linking agent comprises a zirconium compound, glutamic acid, and a polyol; pumping the aqueous mixture of the hydrated polysaccharide and the cross-linking agent into the wellbore; and cross-linking the hydrated polysaccharide.

    摘要翻译: 本发明公开了一种通过提供水合多糖与盐的水性混合物来处理井眼的方法; 向混合物中加入交联水合多糖的交联剂,其中交联剂包含锆化合物,谷氨酸和多元醇; 将水合多糖和交联剂的水性混合物泵入井眼; 并交联水合多糖。

    Viscosity reduction
    30.
    发明授权
    Viscosity reduction 有权
    粘度降低

    公开(公告)号:US07678745B2

    公开(公告)日:2010-03-16

    申请号:US12212339

    申请日:2008-09-17

    IPC分类号: C09K8/68

    摘要: A well treatment fluid and method uses an organic peroxide. An activator embodiment can lower an effective concentration of the peroxide to break the fluid. A weight ratio of activator:organic peroxide can be at least about 1:20 in one well treatment fluid embodiment. A peroxyester breaker embodiment can be used in a well treatment fluid and method. A breaker delay agent embodiment can control the polymer break window in a well treatment fluid and method using an organic peroxide. A breaker package embodiment used in a well treatment fluid and method can include an organic peroxide and an amine breaker delay agent having the formula RR1NR2 wherein R, R1 and R2 are independently selected from hydrogen, alkyl, hydroxyalkyl, and combinations thereof.

    摘要翻译: 良好的处理流体和方法使用有机过氧化物。 活化剂实施方案可以降低过氧化物的有效浓度以破坏流体。 活化剂:有机过氧化物的重量比可以在一个井处理流体实施方案中至少约1:20。 过氧酯断路器实施例可以用于井处理流体和方法。 断路器延迟器实施例可以在井处理流体中使用有机过氧化物控制聚合物破裂窗口。 在井处理流体和方法中使用的破碎机包装实施方案可以包括有机过氧化物和具有式RR1NR2的胺类破乳剂延迟剂,其中R,R 1和R 2独立地选自氢,烷基,羟基烷基及其组合。