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公开(公告)号：US20220064518A1
公开(公告)日：2022-03-03
申请号：US17007952
申请日：2020-08-31
发明人： Wenwen Li , Rajesh Kumar Saini
IPC分类号： C09K8/68 , C09K8/80 , E21B43/267
摘要： Methods and systems for reducing friction in fracturing fluids are disclosed. An exemplary friction reducing composition includes a synthetic water-soluble polymer and a nanocellulose. This friction reducing composition is added to aqueous saline fluid for hydraulic fracturing treatment of hydrocarbon wells.
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公开(公告)号：US11225599B2
公开(公告)日：2022-01-18
申请号：US16310475
申请日：2016-06-22
IPC分类号： E21B43/267 , C09K8/70 , C09K8/42 , C09K8/80 , E21B33/138
摘要： Embodiments disclosed herein relate to a fluid for use in well treatment having a carrier fluid and a plurality of altered fiber particles having a plurality of defects on a surface of the fiber particles. The fluid may be used for a method of fracturing a subterranean formation. The method includes injecting a fracturing fluid into a wellbore through the subterranean formation, thereby creating a fracture network in the subterranean formation, the fracturing fluid comprising a proppant and a plurality of fibers having a plurality of defects on a surface of the fibers.
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公开(公告)号：US20220002616A1
公开(公告)日：2022-01-06
申请号：US17221871
申请日：2021-04-05
发明人： KAUSTUBH S. KULKARNI , DOUGLAS A. MITCHELL , TIMOTHY J. NEDWED , WILLIAM R. MEEKS , DARYL ALLEN
摘要： A method of forming polymeric proppants in-situ during a fracturing operation. The method includes the steps of delivering reagents downhole and combining the reagents in a first mixing chamber to initiate polymerization; atomizing the combined reagents by passing them through an atomizer as they exit the first mixing chamber to form partially polymerized polymeric bodies; pumping water down a production casing; mixing the partially polymerized polymeric bodies and the water in a second mixing chamber; completing polymerization and forming solid polymeric proppants upon exiting the second mixing chamber; and passing the solid polymeric proppants through perforations in the casing and into fractures within the formation. A system for forming polymeric proppants in-situ during a fracturing operation and a method for forming solid polymeric proppants at the surface of a formation for use in a fracturing operation is also provided.
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94.发明申请公开(公告)号：US20220002615A1
公开(公告)日：2022-01-06
申请号：US17288790
申请日：2018-11-26
摘要： Compositions and methods using subterranean treatment fluids comprising water-soluble polymers are provided. In some embodiments, the methods include: adding an anionic or amphoteric water-soluble polymer to a treatment fluid comprising an aqueous base fluid; adding a dewatering agent to the treatment fluid, wherein the dewatering agent comprises an aqueous phase, a solvent, a co-solvent, and one or more surfactants selected from the group consisting of: ethoxylated alcohol, a polyamine polyether, a resin alkoxylated oligomer, and any combination thereof; and introducing the treatment fluid into a well bore penetrating at least a portion of the subterranean formation.
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95.发明授权公开(公告)号：US11215034B2
公开(公告)日：2022-01-04
申请号：US16487347
申请日：2017-04-19
发明人： Andrey Filippov , Jianxin Lu
IPC分类号： E21B43/16 , E21B41/00 , C09K8/80 , E21B43/267 , G06N5/04 , G06F111/10
摘要： System and methods for controlling suspended particle redistribution during stimulation treatments. Fluid flow in a wellbore is simulated for a stimulation treatment to be performed along a section of the wellbore within a subterranean formation, based on a flow model associated with the wellbore. Based on the simulation, dimensionless parameters characterizing a flow of suspended particles within a treatment fluid to a fractured area of the formation via at least one perforation along the section of the wellbore are calculated. A collection efficiency of the suspended particles within the fluid is determined, based on the dimensionless parameters. The collection efficiency is used to calculate a flow rate of the suspended particles to the fractured area of the formation via the perforation. The flow rate is used to estimate an amount of the suspended particles to be injected into the wellbore during the stimulation treatment along the wellbore section.
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公开(公告)号：US20210403801A1
公开(公告)日：2021-12-30
申请号：US17371974
申请日：2021-07-09
摘要： Polymer-coated proppants for hydraulic fracturing of oil and gas wells have an outer layer portion that comprises an organofunctional coupling agent, preferably an organofunctional silane coupling agent. The use of an organofunctional silane coupling agent in the outer layer portion of the proppant coating is preferably chosen to expose functionalities that will be reactive towards similar functionalities of adjacent and similarly coated proppants so that, when introduced downhole, these proppants form interparticle bonds at the temperatures and crack closure pressures found downhole in fractured strata. Such enhanced interparticle bonding helps keep the proppant in the fracture and maintains conductivity with reduced flowback. The invention also helps proppants designed for low temperature well to bond more firmly and allows proppants designed for high temperature wells to bond well even at lower downhole temperatures, thereby extending their useful range.
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公开(公告)号：US20210363409A1
公开(公告)日：2021-11-25
申请号：US16881175
申请日：2020-05-22
发明人： Leiming LI , Liang XU , Todd COLLIER
摘要： A fracturing fluid can include: a base fluid, wherein the base fluid comprises water; proppant; a friction reducer; and a friction reducer enhancer, wherein the friction reducer enhancer is a surfactant. The friction reducer enhancer can be in a concentration greater than or equal to a critical micelle concentration. Methods of fracturing a subterranean formation can include introducing the fracturing fluid into the subterranean formation. The friction reducer enhancer can increase the hydration rate of the friction reducer, whereby friction reduction of the fracturing fluid can occur much faster than without the friction reducer enhancer.
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公开(公告)号：US11180691B2
公开(公告)日：2021-11-23
申请号：US16254282
申请日：2019-01-22
申请人： Baker Hughes
摘要： The strength of a proppant or sand control particulate may be improved by coating the proppant to form a composite. The composite has enhanced compressive strength between about 34 to about 130 MPa and minimizes the spelling of fines at closure stresses in excess of 5,000 psi. Conductivity of fractures is further enhanced by forming a pack of the composites in the fracture.
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公开(公告)号：US20210355373A1
公开(公告)日：2021-11-18
申请号：US17391675
申请日：2021-08-02
发明人： Liang Xin Xu , Philip Nguyen , Kai He
摘要： A fracturing fluid may comprise an aqueous based fluid and halloysite nanotubes, wherein the halloysite nanotubes comprise a cargo.
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公开(公告)号：US11168241B2
公开(公告)日：2021-11-09
申请号：US16562587
申请日：2019-09-06
发明人： Vivek S. Goel , Peter James Boul , Xueyu Pang , Lee J. Hall , Jay P. Deville , Samuel J. Lewis , B. Raghava Reddy , Trissa Joseph , Xiangnan Ye
IPC分类号： C09K8/20 , C04B28/02 , C09K8/467 , C04B22/00 , C04B22/10 , C04B24/38 , C04B28/04 , C09K8/14 , C09K8/16 , C09K8/40 , C09K8/487 , C09K8/493 , C09K8/54 , C09K8/80 , C09K8/504 , C04B103/46
摘要： The present disclosure relates to downhole fluid additives including a clay, a hydroxylated polymer, a cation, and water. The disclosure further relates to downhole fluids, including drilling fluids, spaces, cements, and proppant delivery fluids containing such as downhole fluid additive and methods of using such fluids. The downhole fluid additive may have any of a variety of functions in the downhole fluid and may confer any of a variety of properties upon it, such as salt tolerance or desired viscosities even at high downhole temperatures.
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