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公开(公告)号：US20220127512A1
公开(公告)日：2022-04-28
申请号：US17080272
申请日：2020-10-26
发明人： Md Amanullah , Raed Alouhali , Mohammed Al-Arfaj
摘要： Lost circulation materials may include pluralities of ceramic spheres having a size distribution in a range of from about 5 mm to about 25 mm and such that the lost circulation materials are porous and permeable. Methods of eliminating or reducing lost circulation from a well having a loss zone may include introducing the porous and permeable lost circulation materials into the well such that a porous and permeable flow barrier is created in the loss zone, wherein the porous and permeable flow barrier may prevent whole mud loss while drilling and allows hydrocarbon production after completion of the well. Carrier fluids may include water, viscosifiers, fluid loss additives, weighting agents, lost circulation materials containing pluralities of ceramic spheres having a size distribution in a range of from about 5 mm to about 25 mm.
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22.发明申请公开(公告)号：US20220089935A1
公开(公告)日：2022-03-24
申请号：US17382348
申请日：2021-07-22
发明人： Yan Xue , Ruiquan Zhang , Dan Huang , Liang Li , Bing Wei
摘要： A thermoplastic elastomer for profile control and water shutoff is prepared from the following raw materials in parts by weight: 8-10 parts of a component A, 1-3 parts of a strong acid, 1-3 parts of a hydrophobic modifier and 100-105 parts of water. The component A is one of polyethylene glycol, polyvinylether, polyvinyl alcohol, copolymer of acrylamide and acrylonitrile. The strong acid is one of concentrated hydrochloric acid and concentrated sulfuric acid. The hydrophobic modifier is any one of formaldehyde, acetaldehyde, propionaldehyde, butyraldehyde, β-propiolactone, γ-butyrolactone, δ-valerolactone, methyltriacetylsilane, methyltrimethylsilane, butyl acrylate and ethylene glycol dimethacrylate. The thermoplastic elastomer for profile control and water shutoff provided by the disclosure has the advantages of one-step preparation and molding, strong deformation capability, temperature resistance, salt tolerance, strong stability and the like, and is suitable for large-scale production and application.
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公开(公告)号：US11261366B2
公开(公告)日：2022-03-01
申请号：US16480003
申请日：2018-02-26
摘要： Methods for separating fluids with a barrier pill within a downhole environment are provided. The method includes introducing a barrier pill fluid into the wellbore containing a first fluid to form the barrier pill on top of the first fluid in the wellbore and introducing a second fluid into the wellbore. The barrier pill separates the first fluid and the second fluid. The barrier pill includes a viscoelastic surfactant and an aqueous fluid, such as a brine containing water and about 5 wt % to about 50 wt % of a salt.
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公开(公告)号：US11230658B2
公开(公告)日：2022-01-25
申请号：US16901859
申请日：2020-06-15
发明人： Peter Boul , Feng Liang , Diana Rasner
IPC分类号： C09K8/035 , C09K8/467 , C09K8/504 , C09K5/06 , C09K8/57 , C09K8/575 , C04B24/30 , C04B28/02 , C08G73/02 , C08G73/06 , C08L79/02 , C08L79/04 , C09K8/42 , C09K8/56 , E21B33/138 , C09K8/03 , C09K8/506
摘要： A well treatment composition for use in a hydrocarbon-bearing reservoir comprising a reversible aminal gel composition. The reversible aminal gel composition includes a liquid precursor composition. The liquid precursor composition is operable to remain in a liquid state at about room temperature. The liquid precursor composition comprises an organic amine composition; an aldehyde composition; and a polar aprotic organic solvent. The liquid precursor composition transitions from the liquid state to a gel state responsive to an increase in temperature in the hydrocarbon-bearing reservoir. The gel state is stable in the hydrocarbon-bearing reservoir at a temperature similar to a temperature of the hydrocarbon-bearing reservoir, and the gel state is operable to return to the liquid state responsive to a change in the hydrocarbon-bearing reservoir selected from the group consisting of: a decrease in pH in the hydrocarbon-bearing reservoir and an addition of excess metal salt composition in the hydrocarbon-bearing reservoir.
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公开(公告)号：US11199060B2
公开(公告)日：2021-12-14
申请号：US16082074
申请日：2016-03-01
发明人： John Mervyn Cook , Quanxin Guo , Paul William Way , Louise Bailey , Simon James , Salim Taoutaou
IPC分类号： E21B21/00 , C04B20/00 , C04B28/02 , C09K8/36 , C09K8/487 , C09K8/504 , E21B33/138 , E21B33/14 , G01N3/12
摘要： Methods for drilling a wellbore into a subterranean formation include preparing a drilling fluid and circulating the drilling fluid in the wellbore while drilling in the subterranean formation, forming a filtercake from the drilling fluid, creating or encountering one or more fractures in the subterranean formation while drilling, and allowing a portion of the filtercake formed to at least partially seal the one or more fractures while continuing the drilling.
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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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27.发明授权公开(公告)号：US11149181B2
公开(公告)日：2021-10-19
申请号：US17021906
申请日：2020-09-15
IPC分类号： C09K8/12 , C09K8/03 , C09K8/516 , C09K8/508 , E21B31/00 , C09K8/504 , E21B21/00 , E21B33/138 , E21B17/10
摘要： A convertible composition comprising a nanosilica drilling fluid, the nanosilica drilling fluid comprising an aqueous based drilling mud, where the aqueous based drilling mud comprises water, and an alkaline nanosilica dispersion, where the alkaline nanosilica dispersion comprises nanosilica; and a chemical activator, the chemical activator operable to hydrolyze in the presence of water to produce an acid, where a weight ratio of the alkaline nanosilica dispersion to the chemical activator is between 1 to 0.001 and 1 to 0.25.
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公开(公告)号：US11015050B2
公开(公告)日：2021-05-25
申请号：US16898735
申请日：2020-06-11
摘要： A nanocomposite including a metal oxide and two-dimensional nanosheets. The metal oxid includes at least one of zirconia and titania, and the two-dimensional nanosheets include at least one of reduced graphene oxide and boron nitride. A weight ratio of the metal oxide to the two-dimensional nanosheets is in a range of 2:1 to 19:1, or in a range or 2:1 to 9:1. Making the nanocomposite includes forming a first aqueous dispersion including zirconia nanoparticles and graphene oxide powder, combining a reducing agent with the first aqueous dispersion, irradiating the first aqueous dispersion with microwave radiation, thereby yielding a second aqueous dispersion including zirconia and graphene, and separating the nanocomposite from the second aqueous dispersion, wherein the nanocomposite comprises zirconia and graphene.
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公开(公告)号：US20210071061A1
公开(公告)日：2021-03-11
申请号：US16561975
申请日：2019-09-05
发明人： Thomas Jason Pisklak , Juan Pablo Stacey , James Robert Benkley , Claudia Carmen Pineda , Ronnie Glen Morgan
摘要： A method may include: providing a spacer fluid comprising water and an agglomerated zeolite catalyst; and displacing a drilling fluid in a wellbore using the spacer fluid.
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公开(公告)号：US20210024807A1
公开(公告)日：2021-01-28
申请号：US16982154
申请日：2019-04-03
发明人： Konstantin VIDMA , Anna DUNAEVA , Changsheng XIANG , Jazmin GODOY-VARGAS , Mohan Kanaka Raju PANGA , John Thomas MAYO , Dmitriy USOLTSEV , Jacob KARIAMPALLY
IPC分类号： C09K8/516 , C09K8/80 , C09K8/514 , C09K8/508 , C09K8/504 , E21B43/267 , E21B33/138
摘要： Methods include pumping a fracturing pad fluid into a subterranean formation under conditions of sufficient rate and pressure to create at least one fracture in the subterranean formation, the fracturing pad fluid including a carrier fluid and a plurality of bridging particles, the bridging particles forming a bridge in a fracture tip of a far field region of the formation. Methods further include pumping a first plurality of fibers into the subterranean formation to form a low permeability plug with the bridging particles, and pumping a proppant fluid comprising a plurality of proppant particles.
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