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    • 21. 发明授权
    • Metal free crosslinking of galactomannan
    • 半乳甘露聚糖的无金属交联
    • US08361935B2
    • 2013-01-29
    • US12539243
    • 2009-08-11
    • Carlos AbadMathew M. SamuelKevin W. England
    • Carlos AbadMathew M. SamuelKevin W. England
    • C09K8/68E21B43/16
    • C09K8/685C08B15/005C08B15/02C08B37/0096C08J3/24C08L5/00C09K8/887C09K8/90
    • Methods of treating a subterranean formation are disclosed, using a fluid including an essentially metal-free organic crosslinker selected from amines, diamines, poly amines, polyamino polymers, alcohols, polyols, polyhydroxy polymers, hydroxyl amines, peptides and proteins, combined with a polysaccharide or cellulosic material having oxidized functional groups. The fluid is then introduced into a wellbore penetrating the formation to contact the formation. The polysaccharide or cellulosic material may have aldehyde groups as one example of an oxidized group, or any other suitable oxidized functional group. The polysaccharide or the cellulosic material may be oxidized using at least one of an enzymes, oxidizers, photooxidation, bacteria, catalyst, or other suitable technique. The fluid may also further include an inorganic crosslinker.
    • 公开了使用包含基本上不含金属的有机交联剂的流体的方法,该有机交联剂选自胺,二胺,聚胺,聚氨基聚合物,醇,多元醇,多羟基聚合物,羟胺,肽和蛋白质,与多糖组合 或具有氧化官能团的纤维素材料。 然后将流体引入穿透地层的井筒中以接触地层。 多糖或纤维素材料可以具有作为氧化基团或任何其它合适的氧化官能团的一个实例的醛基。 多糖或纤维素材料可以使用酶,氧化剂,光氧化,细菌,催化剂或其它合适的技术中的至少一种来氧化。 流体还可以进一步包括无机交联剂。
    • 22. 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。
    • 25. 发明申请
    • PARTIALLY NEUTRALIZED POLYHYDROXY ACIDS FOR WELL TREATMENTS
    • 部分中性聚羟基酸用于治疗
    • US20100056401A1
    • 2010-03-04
    • US12541311
    • 2009-08-14
    • Mathew M. SamuelBalkrishna GadiyarSai Aung Zaw Min
    • Mathew M. SamuelBalkrishna GadiyarSai Aung Zaw Min
    • C09K8/60
    • C09K8/68C09K8/12C09K8/487C09K8/508C09K8/512C09K8/685C09K8/88C09K8/887
    • This relates to a method and composition for forming and utilizing a fluid in the oilfield services industry including exposing a polyacid and/or polyacid derivative to a preparation method, introducing the prepared polyacid and/or polyacid derivative to a fluid to form a treatment fluid, and treating a subterranean formation and/or a wellbore with the treatment fluid, wherein the viscosity of the treatment fluid is not observably reduced by introducing the prepared polyacid and/or polyacid derivative to a treatment fluid. This also relates to a method and composition for use in the oil field services industry including a prepared polyacid and/or polyacid derivative, a fluid, and a viscosity control agent, wherein the viscosity of the composition is not observably lower than if the prepared polyacid and/or polyacid derivative were not present.
    • 这涉及用于在油田服务业中形成和利用流体的方法和组合物,包括将多酸和/或多元酸衍生物暴露于制备方法,将制备的多元酸和/或多元酸衍生物引入流体中以形成处理流体, 以及用所述处理流体处理地下地层和/或井眼,其中通过将制备的多元酸和/或多元酸衍生物引入到处理流体中,所述处理流体的粘度不可观察地降低。 这也涉及用于油田服务行业的方法和组合物,包括制备的多元酸和/或多酸衍生物,流体和粘度控制剂,其中组合物的粘度不可观察地低于制备的多元酸 和/或多酸衍生物不存在。
    • 27. 发明申请
    • Methods of Perforation Using Viscoelastic Surfactant Fluids and Associated Compositions
    • 使用粘弹性表面活性剂流体和相关组合物的穿孔方法
    • US20090139766A1
    • 2009-06-04
    • US12323675
    • 2008-11-26
    • Mathew M. SamuelYerik BalabatyrovFrank F. ChangMartin GriffithLiz Morris
    • Mathew M. SamuelYerik BalabatyrovFrank F. ChangMartin GriffithLiz Morris
    • E21B43/117C09K8/68
    • E21B43/1195C09K8/64C09K8/68C09K8/72C09K2208/30
    • The invention provides a method for perforating a well with a perforating fluid comprising a viscoelastic surfactant that essentially stops fluid leak-off after perforation in an overbalanced condition. Another aspect of the invention provides the perforating fluid in itself. The well has a wellbore defined by a generally cylindrical casing in at least a portion of the wellbore (i.e., the wellbore is cased, although it is not necessary cased in its entire length). The wellbore passes through a subterranean formation that comprises hydrocarbon formation fluids (such as oil and/or gas), at least in certain strata. The method comprises placing a perforating device in a wellbore which includes at least one explosive perforating charge that can be detonated in order to perforate the casing and allow the formation fluids to enter the wellbore. The casing is located between the subterranean formation and the perforating device. A perforating fluid including at least one viscoelastic surfactant is placed in the wellbore between the perforating device and the casing, in at least a portion of the wellbore. In other words, the perforating fluid is present in the wellbore adjacent to the perforating device. The explosive charge(s) in the perforating device is detonated, such that the perforating device forms at least one perforation in the casing that permits the flow of hydrocarbon formation fluids from the subterranean formation into the wellbore. As a result of the detonation, at least a portion of the perforating fluid is put in communication with the subterranean formation.
    • 本发明提供了一种用穿孔流体穿孔的方法,该穿孔流体包括粘弹性表面活性剂,其基本上在过平衡状态下穿孔后阻止流体泄漏。 本发明的另一方面本身提供穿孔流体。 井具有在井眼的至少一部分中的大致圆柱形的壳体限定的井筒(即,井眼套管,尽管不需要在其整个长度上套管)。 至少在某些地层中,井眼穿过包含烃地层流体(如油和/或气)的地下地层。 该方法包括将穿孔装置放置在井眼中,其包括至少一个可爆炸的爆炸穿孔装置,以便使壳体穿孔并允许地层流体进入井筒。 套管位于地层和穿孔装置之间。 包括至少一种粘弹性表面活性剂的穿孔流体在井眼的至少一部分中放置在穿孔装置和壳体之间的井筒中。 换句话说,穿孔流体存在于与穿孔装置相邻的井眼中。 穿孔装置中的爆炸装料被引爆,使得穿孔装置在壳体中形成至少一个穿孔,其允许烃地层流体从地层将流体流入井眼。 作为爆炸的结果,穿孔流体的至少一部分与地下地层连通。
    • 28. 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)。