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    • 2. 发明授权
    • Methods for limiting the inflow of formation water and for stimulating
subterranean formations
    • 限制地层水流入和刺激地下地层的方法
    • US5979557A
    • 1999-11-09
    • US865137
    • 1997-05-29
    • Roger J. CardJ. Ernest BrownPalathinkara S. VinodDean M. WillbergMathew M. SamuelFrank F. Chang
    • Roger J. CardJ. Ernest BrownPalathinkara S. VinodDean M. WillbergMathew M. SamuelFrank F. Chang
    • C09K8/62C09K8/68C09K8/74E21B43/27C09K3/00E21B33/00
    • C09K8/68C09K8/74C09K2208/30Y10S507/922Y10S507/923Y10S507/933
    • A method is provided for limiting the inflow of formation water during a well turn around to maximize polymer recovery after a hydraulic fracturing treatment of a formation. The method includes a step for selectively blocking the pore structure in a water-bearing zone and not blocking the pore structure of a hydrocarbon zone at the formation face; performing a hydraulic fracturing treatment using a fluid having a polymer; and turning the well around to recover the polymer. There is also provided a method of acidizing, preferably matrix acidizing, a formation having a hydrocarbon zone and a water-bearing zone. The method includes a step for selectively blocking the pore structure in the water-bearing zone at the formation face to selectively retard migration of acid into the water-bearing zone; and injecting acid into the formation, wherein the acid is diverted from the water-bearing zone to the hydrocarbon zone as a result of the selective blocking step. When the water-bearing zone contains a residual amount of hydrocarbon residues, the method further includes injecting a mutual solvent prior to the step for selectively blocking.In these methods, the step for selectively blocking preferably forms a plug of a viscous fluid in the pore structure of the water-bearing zone at the formation face. The viscous fluid preferably has at least a viscoelastic surfactant capable of forming a worm-like micelle in an aqueous environment, a water-soluble salt to effect formation stability, and an aqueous carrier fluid.
    • 提供了一种方法,用于限制地层水在井身转弯期间的流入,以使地层的水力压裂处理后的聚合物回收率最大化。 该方法包括用于选择性地阻挡含水区中的孔结构并且不阻挡在形成面上的烃区的孔结构的步骤; 使用具有聚合物的流体进行水力压裂处理; 并将井旋转以回收聚合物。 还提供了一种酸化,优选基质酸化具有烃区和含水区的地层的方法。 该方法包括选择性地阻挡地层表面的含水区中的孔结构以选择性地阻止酸进入含水区的步骤; 并且将酸注入到地层中,其中作为选择性阻隔步骤的结果,酸从含水区转移到烃区。 当含水区域含有残留量的烃残留物时,该方法还包括在该步骤之前注入相互溶剂用于选择性阻断。 在这些方法中,用于选择性阻挡的步骤优选在形成面上的含水区的孔结构中形成粘性流体的塞子。 粘性流体优选至少具有能够在水性环境中形成蠕虫状胶束的粘弹性表面活性剂,形成稳定性的水溶性盐和水性载体流体。
    • 4. 发明授权
    • Methods of fracturing subterranean formations
    • 压裂地下地层的方法
    • US06306800B1
    • 2001-10-23
    • US09166658
    • 1998-10-05
    • Mathew M. SamuelKeith I. DismukeRoger J. CardJ. Ernest BrownKevin W. England
    • Mathew M. SamuelKeith I. DismukeRoger J. CardJ. Ernest BrownKevin W. England
    • C09K704
    • C09K8/68C09K8/74C09K2208/30Y10S507/922Y10S507/923Y10S507/933
    • The improved recovery of hydrocarbons from subterranean formations by fracturing and matrix acidizing a subterranean formation is accomplished. Well treatment fluids having a viscoelastic surfactant fluid containing worm like micelles are useful to improve recovery of hydrocarbons and limit the loss of fracturing fluid into the formation fracture face. The viscolastic surfactant-based fracturing fluids of the present Invention are stable across a wide pH spectrum, allowing them to be used for fracturing treatments at low pH, as well as matrix acidizing treatments. In addition, the stability of these fluids is enhanced in the presence of organic anions. Two-stage fracturing treatments comprised of a viscoelastic surfactant-based fracturing fluid and a polymer-based system, wherein the two fluids are either blended or pumped into the formation sequentially (the polymer last) are also presented.
    • 通过压裂和基底酸化地下地层,从地下地层获得的烃的回收率得到改善。 具有含蠕虫状胶束的粘弹性表面活性剂流体的良好处理液可用于改善烃的回收并限制压裂流体进入地层断裂面的损失。 本发明的基于粘弹性表面活性剂的压裂液在宽pH范围内是稳定的,允许它们用于低pH下的压裂处理以及基质酸化处理。 此外,在有机阴离子存在下,这些流体的稳定性得到提高。 两阶段压裂处理由基于粘弹性表面活性剂的压裂液和基于聚合物的系统组成,其中两种流体相互混合或泵送到地层中(聚合物最后)。
    • 6. 发明授权
    • Heterogeneous proppant placement in a fracture with removable channelant fill
    • 不均匀的支撑剂放置在具有可移除的通道填充物的断裂中
    • US08757259B2
    • 2014-06-24
    • US12945426
    • 2010-11-12
    • Timothy LeskoJ. Ernest BrownDean M. WillbergIvan V. KosarevAnatoly MedvedevJonathan AbbottAlexander Burukhin
    • Timothy LeskoJ. Ernest BrownDean M. WillbergIvan V. KosarevAnatoly MedvedevJonathan AbbottAlexander Burukhin
    • E21B43/267
    • E21B43/267C09K8/665C09K8/68C09K8/72C09K8/80
    • A method of heterogeneous proppant placement in a subterranean fracture is disclosed. The method comprises injecting well treatment fluid including proppant (16) wherein the proppant comprises from 1 to 100 percent in weight of stiff, low-elasticity and low-deformability elongated particles (34) and proppant-spacing filler material called a channelant (18) through a wellbore (10) into the fracture (20), heterogeneously placing the proppant in the fracture in a plurality of proppant clusters or islands (22) spaced apart by the channelant (24), and removing the channelant filler material (24) to form open channels (26) around the pillars (28) for fluid flow from the formation (14) through the fracture (20) toward the wellbore (10). The proppant and channelant can be segregated within the well treatment fluid, or segregated during placement in the fracture. The channelant can be dissolvable particles, initially acting as a filler material during placement of the proppant in the fracture, and later dissolving to leave the flow channels between the proppant pillars. The well treatment fluid can include fibers to provide reinforcement and consolidation of the proppant and, additionally or alternatively, to inhibit settling of the proppant in the treatment fluid.
    • 公开了一种在地下裂缝中布置非均相支撑剂的方法。 该方法包括注入包括支撑剂(16)在内的井处理流体,其中支撑剂包含1至100重量%的刚性,低弹性和低变形性细长颗粒(34)和称为通道(18)的支撑剂间隔填料, 通过井眼(10)进入裂缝(20),将支撑剂不均匀地放置在由通道(24)间隔开的多个支撑剂团簇或岛(22)中的断裂中,并将通道填料(24)移除到 在所述柱(28)周围形成用于从所述地层(14)穿过所述断裂(20)流向所述井筒(10)的开放通道(26)。 支撑剂和输送管可以在井内处理液中分离,或在放置在裂缝中时分离。 通道剂可以是可溶解的颗粒,最初在将支撑剂置于断裂中时充当填料,然后溶解以留下支撑剂柱之间的流动通道。 井处理流体可以包括纤维以提供支撑剂的增强和固结,并且还可以或另外地抑制支撑剂在处理流体中的沉降。
    • 7. 发明申请
    • HETEROGENEOUS PROPPANT PLACEMENT IN A FRACTURE WITH REMOVABLE CHANNELANT FILL
    • 具有可移动通道填充物的破裂物中的异质特殊放置
    • US20110240293A1
    • 2011-10-06
    • US13097263
    • 2011-04-29
    • Timothy LeskoJ. Ernest BrownDean M. WillbergIvan V. KosarevAnatoly Medvedev
    • Timothy LeskoJ. Ernest BrownDean M. WillbergIvan V. KosarevAnatoly Medvedev
    • E21B43/267
    • E21B43/267C09K8/665C09K8/68C09K8/72C09K8/80
    • A method of heterogeneous proppant placement in a subterranean fracture is disclosed. The method comprises injecting well treatment fluid including proppant (16) and proppant-spacing filler material called a channelant (18) through a wellbore (10) into the fracture (20), heterogeneously placing the proppant in the fracture in a plurality of proppant clusters or islands (22) spaced apart by the channelant (24), and removing the channelant filler material (24) to form open channels (26) around the pillars (28) for fluid flow from the formation (14) through the fracture (20) toward the wellbore (10). The proppant and channelant can be segregated within the well treatment fluid, or segregated during placement in the fracture. The channelant can be dissolvable particles, initially acting as a filler material during placement of the proppant in the fracture, and later dissolving to leave the flow channels between the proppant pillars. The well treatment fluid can include fibers to provide reinforcement and consolidation of the proppant and, additionally or alternatively, to inhibit settling of the proppant in the treatment fluid.
    • 公开了一种在地下裂缝中布置非均相支撑剂的方法。 该方法包括将包括支撑剂(16)和称为通道(18)的支撑剂间隔填料的井处理流体通过井筒(10)注入到裂缝(20)中,将支撑剂不均匀地放置在多个支撑剂团簇 或通过所述通道(24)间隔开的岛(22),以及去除所述通道填料(24)以形成围绕所述柱(28)的开放通道(26),用于流体从所述地层(14)通过所述断裂 )朝向井眼(10)。 支撑剂和输送管可以在井内处理液中分离,或在放置在裂缝中时分离。 通道剂可以是可溶解的颗粒,最初在将支撑剂置于断裂中时充当填料,然后溶解以留下支撑剂柱之间的流动通道。 井处理流体可以包括纤维以提供支撑剂的增强和固结,并且还可以或另外地抑制支撑剂在处理流体中的沉降。
    • 8. 发明申请
    • HETEROGENEOUS PROPPANT PLACEMENT IN A FRACTURE WITH REMOVABLE CHANNELANT FILL
    • 具有可移动通道填充物的破裂物中的异质特殊放置
    • US20110114313A1
    • 2011-05-19
    • US12945426
    • 2010-11-12
    • Timothy LeskoJ. Ernest BrownDean M. WillbergIvan V. KosarevAnatoly MedvedevJonathan AbbottAlexander Burukhin
    • Timothy LeskoJ. Ernest BrownDean M. WillbergIvan V. KosarevAnatoly MedvedevJonathan AbbottAlexander Burukhin
    • E21B43/267
    • E21B43/267C09K8/665C09K8/68C09K8/72C09K8/80
    • A method of heterogeneous proppant placement in a subterranean fracture is disclosed. The method comprises injecting well treatment fluid including proppant (16) wherein the proppant comprises from 1 to 100 percent in weight of stiff, low-elasticity and low-deformability elongated particles (34) and proppant-spacing filler material called a channelant (18) through a wellbore (10) into the fracture (20), heterogeneously placing the proppant in the fracture in a plurality of proppant clusters or islands (22) spaced apart by the channelant (24), and removing the channelant filler material (24) to form open channels (26) around the pillars (28) for fluid flow from the formation (14) through the fracture (20) toward the wellbore (10). The proppant and channelant can be segregated within the well treatment fluid, or segregated during placement in the fracture. The channelant can be dissolvable particles, initially acting as a filler material during placement of the proppant in the fracture, and later dissolving to leave the flow channels between the proppant pillars. The well treatment fluid can include fibers to provide reinforcement and consolidation of the proppant and, additionally or alternatively, to inhibit settling of the proppant in the treatment fluid.
    • 公开了一种在地下裂缝中布置非均相支撑剂的方法。 该方法包括注入包括支撑剂(16)在内的井处理流体,其中支撑剂包含1至100重量%的刚性,低弹性和低变形性细长颗粒(34)和称为通道(18)的支撑剂间隔填料, 通过井眼(10)进入裂缝(20),将支撑剂不均匀地放置在由通道(24)间隔开的多个支撑剂团簇或岛(22)中的断裂中,并将通道填料(24)移除到 在所述柱(28)周围形成用于从所述地层(14)穿过所述断裂(20)流向所述井筒(10)的开放通道(26)。 支撑剂和输送管可以在井内处理液中分离,或在放置在裂缝中时分离。 通道剂可以是可溶解的颗粒,最初在将支撑剂置于断裂中时充当填料,然后溶解以留下支撑剂柱之间的流动通道。 井处理流体可以包括纤维以提供支撑剂的增强和固结,并且还可以或另外地抑制支撑剂在处理流体中的沉降。