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公开(公告)号：US11932812B2
公开(公告)日：2024-03-19
申请号：US17887254
申请日：2022-08-12
发明人： Erick Acosta , Luchao Jin , Shashidhar Rajagopalan
摘要： A process for forming a particle carrier system includes supplying a particle carrier, the particle carrier having a surface and modifying the particle carrier surface to include a first ionic functional group. The process also includes chemically binding the first ionic functional group on the particle carrier surface to a first ionic molecule.
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公开(公告)号：US11912802B2
公开(公告)日：2024-02-27
申请号：US18067512
申请日：2022-12-16
发明人： Yongming Li , Qiang Ren
IPC分类号： C09K8/68 , C08F2/48 , C08F251/00 , C09K8/588 , C09K8/88
CPC分类号： C08F251/00 , C08F2/48 , C09K8/588 , C09K8/68 , C09K8/885
摘要： A supramolecular star-shaped polymer with β-CD as a core and a preparation method thereof. The supramolecular star-shaped polymer with β-CD as a core has a β-cyclodextrin-modified branched monomer F-β-CD that serves as a core and is grafted with acrylamide, acrylic acid, hydrophobic monomers and surface-active macromolecular monomers to form a supramolecular star-shaped polymer. The hydrophobic monomer is one or more of N-benzyl-N alkyl (meth) acrylamide and N-phenethyl-N alkyl (meth) acrylamide; the surface-active macromolecular monomer is one or more of allyl polyoxyethylene ether, alkylphenol polyoxyethylene ether (meth)acrylate, allyl alkylphenol polyoxyethylene ether, alkyl alcohol polyoxyethylene ether (meth)acrylate and allyl alkyl alcohol polyoxyethylene ether. The method has cheapness and easiness to obtain raw materials, ease to control synthesis conditions, and high yield. The present invention has excellent tackifying performance, temperature resistance, salt resistance and hydrolysis resistance, so that it shows good application prospects in the aspect of enhancing recovery ratios and hydraulic fracturing in oilfields.
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公开(公告)号：US11898096B2
公开(公告)日：2024-02-13
申请号：US17617729
申请日：2020-06-15
申请人： STEPAN COMPANY
CPC分类号： C09K8/725 , C09K8/68 , C09K8/885 , C09K2208/18
摘要： A hydraulic fracturing method for recovering oil from a low-temperature subterranean oil formation is disclosed. Before, during, or after inducing hydraulic fracturing within the formation, a particulate, degradable polyester diverting agent is introduced into the formation in an amount effective to improve oil production from the formation. The diverting agent is allowed to degrade, and oil is recovered. The diverting agent has a melting point greater than the average temperature of the formation and is selected from: (i) ethylene glycol succinates; (ii) acid-terminated ethylene glycol succinates; (iii) acid-terminated polyglycolic acids; (iv) acid-terminated polylactic acids; (v) mixtures of any of (i) through (iv) with a half acid ester; and (vi) mixtures of polylactic acids or polyglycolic acids with a half acid ester. These easily synthesized classes of particulate polyester diverting agents degrade more effectively than polylactides under the conditions present in low-temperature wells and should help to enhance well productivity.
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公开(公告)号：US20230416600A1
公开(公告)日：2023-12-28
申请号：US17848143
申请日：2022-06-23
发明人： Wenwen Li , Fakuen Frank Chang , Nam Mai
摘要： Compositions containing a diverting material, and related methods and systems for diverting a fluid from a high permeability zone in an underground formation to a low permeability zone in the underground formation. The diverter material contains a polyurethane and a second polymer. The compositions, methods and systems may be used to achieve more homogeneous stimulation during a well stimulation treatment.
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公开(公告)号：US20180258344A1
公开(公告)日：2018-09-13
申请号：US15760214
申请日：2015-11-16
摘要： Degradable particulates may allow for temporary redirection or occlusion of a fluid within a subterranean formation. However, many types of degradable particulates can be problematic for large-scale use, such as during subterranean treatment operations. Methods for treating a subterranean formation using degradable particulates may comprise: providing pre-coated particulates comprising a latently dissolvable core and a transient coating surrounding the latently dissolvable core, the latently dissolvable core and the transient coating comprising different materials; and introducing a treatment fluid comprising a carrier fluid and a plurality of the pre-coated particulates into a wellbore penetrating a subterranean formation in conjunction with a stimulation operation, a material comprising the latently dissolvable core being soluble in the carrier fluid or a formation fluid present within the subterranean formation.
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公开(公告)号：US09982185B2
公开(公告)日：2018-05-29
申请号：US15322996
申请日：2014-08-01
发明人： Liang Xu , Jayant Rane , Kai He
CPC分类号： C09K8/68 , C09K8/04 , C09K8/06 , C09K8/528 , C09K8/602 , C09K8/725 , C09K8/74 , C09K8/80 , C09K8/88 , C09K8/882 , C09K8/885 , C09K8/90 , E21B43/16 , E21B43/26 , E21B43/267
摘要： Systems and methods for creating surfactant-polyelectrolyte complexes at a well site are provided. In one embodiment, the methods comprise: providing a first solution comprising at least one surfactant and a second solution comprising at least one polyelectrolyte; using a stop-flow mixing apparatus at a well site to mix the first and second solutions to form one or more surfactant-polyelectrolyte complexes; using a low-dose pumping apparatus at the well site to transfer the one or more surfactant-polyelectrolyte complexes from the stop-flow mixing apparatus to a blending apparatus at the well site; using the blending apparatus to mix the one or more surfactant-polyelectrolyte complexes with an aqueous base fluid to form a treatment fluid; and introducing the treatment fluid into a well bore penetrating at least a portion of a subterranean formation at the well site.
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公开(公告)号：US20180086971A1
公开(公告)日：2018-03-29
申请号：US15830831
申请日：2017-12-04
CPC分类号： C09K8/685 , C09K8/80 , C09K8/88 , C09K8/882 , C09K8/885 , C09K8/887 , C09K8/92 , C09K2208/10 , E21B43/26 , E21B43/267
摘要： A fracturing fluid system for increasing hydrocarbon production in a subterranean reservoir formation is provided. The fracturing fluid system comprising a fluid composition and a base fluid, the fluid composition comprising a nano-crosslinker, and a base polymer; and the base fluid operable to suspend the fluid composition, the base fluid comprising water; wherein the fluid composition and the base fluid are combined to produce the fracturing fluid system, wherein the fracturing fluid system is operable to stimulate the subterranean reservoir formation. In certain embodiments, the nano-crosslinker is an amine-containing nano-crosslinker and the base polymer is an acrylamide-based polymer. In certain embodiments, the fracturing fluid systems comprise proppants for enhancing hydraulic fracturing stimulation in a subterranean hydrocarbon reservoir.
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公开(公告)号：US20180044572A1
公开(公告)日：2018-02-15
申请号：US15552454
申请日：2016-02-18
发明人： Samuel DANICAN
IPC分类号： C09K8/68 , C09K8/60 , E21B43/267 , C09K8/88
CPC分类号： C09K8/68 , C09K8/528 , C09K8/602 , C09K8/604 , C09K8/605 , C09K8/685 , C09K8/88 , C09K8/885 , C09K8/887 , C09K2208/26 , C09K2208/28 , C09K2208/32 , E21B43/267
摘要： Methods of fracturing a subterranean formation include introducing a fracturing fluid containing an aqueous medium, a viscosifying agent and a polyethylene oxide alkyl ether through a wellbore and into the subterranean formation, pressurizing the fracturing fluid to fracture the subterranean formation, and allowing the fracturing fluid to flow back into the wellbore from the subterranean formation. The polyethylene oxide alkyl ether useful in some embodiments is defined according to the formula: where R1 and R2 are independently selected from linear or branched alkyl groups having from 2 to 16 carbon atoms, and ‘n’ may be a value selected from within a range of from 1 to 100.
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公开(公告)号：US09890322B2
公开(公告)日：2018-02-13
申请号：US15102714
申请日：2014-03-13
发明人： Loan K. Vo , Philip D. Nguyen , James William Ogle , Feng Liang
IPC分类号： C09K8/528 , C09K8/575 , E21B43/02 , C09K8/57 , C09K8/66 , C09K8/68 , C09K8/88 , E21B37/06 , E21B43/26 , E21B43/267
CPC分类号： C09K8/528 , C09K8/572 , C09K8/5751 , C09K8/5753 , C09K8/5755 , C09K8/665 , C09K8/68 , C09K8/88 , C09K8/882 , C09K8/885 , E21B37/06 , E21B43/025 , E21B43/26 , E21B43/267
摘要： Methods including preparing a surface modification agent emulsion comprising an aqueous base fluid, a surfactant, and a hydrophobically-modified amine-containing polymer (HMAP), the HMAP comprising a plurality of hydrophobic modifications on an amine-containing polymer, and wherein the aqueous base fluid forms an external phase of the surface modification agent emulsion and the HMAP forms an internal phase of the surface modification agent emulsion; and introducing the surface modification agent emulsion into a subterranean formation.
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公开(公告)号：US20170015899A1
公开(公告)日：2017-01-19
申请号：US15279741
申请日：2016-09-29
发明人： Sarkis R. Kakadjian , Amanda Rodriguez , John Vu , Jose Garza
CPC分类号： E21B21/003 , C09K8/035 , C09K8/5086 , C09K8/514 , C09K8/516 , C09K8/70 , C09K8/76 , C09K8/86 , C09K8/885 , C09K8/90 , E21B43/025 , E21B43/26
摘要： A treatment to temporarily block highly permeable areas in a wellbore having a temperature of less than 160° F. A diverting agent, a catalyzer, and a viscosifier are mixed together and pumped in the wellbore where the treatment flows in the most highly permeable areas. The diverting agent then begins to block those areas as the well is treated finally causing the fluid to divert to other now more highly permeable areas of the wellbore. After less than 48 hours the diverting agent degrades sufficiently to restore the permeablility of the wellbore.
摘要翻译： 临时阻止温度低于160°F的井眼中的高渗透性区域的处理。将转向剂，催化剂和增粘剂混合在一起，并泵送到井眼中，在该井眼中处理流动在最高可渗透的区域。 转移剂然后开始阻塞这些区域，因为井被最终处理，导致流体转移到井眼的其它现在更高的可渗透区域。 不到48小时后，转移剂会充分降解以恢复井眼的渗透性。
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