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1.发明授权公开(公告)号：US11560508B2
公开(公告)日：2023-01-24
申请号：US16932035
申请日：2020-07-17
发明人： Jothibasu Ramasamy , Vikrant Wagle
IPC分类号： C09K8/28 , B01F23/41 , C07D303/42 , C07D407/06 , C07D407/14
摘要： An invert oil-based mud (OBM) may include an oleaginous continuous phase, an aqueous internal phase, and an emulsifier. The emulsifier may include one or more of the group consisting of epoxidized methyl oleate, epoxidized methyl linoleate, and epoxidized methyl α-linolenate. The invert OBM may contain the emulsifier in an amount of the range of 0.1 to 10 wt. % (weight percent), relative to the total weight of the OBM.
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公开(公告)号：US11492532B2
公开(公告)日：2022-11-08
申请号：US16630559
申请日：2017-09-29
摘要： A method of reducing a density of a density of a stable emulsion drilling fluid may comprise providing a stable emulsion drilling fluid comprising: an aqueous liquid; a biopolymer; an emulsifier; solid particulates; and an oil; wherein the stable emulsion drilling fluid is capable of remaining in quiescent storage at approximately 70° F. and atmospheric pressure without phase separation for about 8 hours or longer; circulating the stable emulsion drilling fluid though a drill string and annulus; adding additional oil to the stable emulsion drilling fluid to decrease the density of the stable emulsion drilling fluid and produce a reduced density stable emulsion drilling fluid; and circulating the reduced density stable emulsion drilling fluid though the drill string and the annulus.
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公开(公告)号：US11479707B1
公开(公告)日：2022-10-25
申请号：US17751822
申请日：2022-05-24
发明人： Sagheer A. Onaizi
摘要： A method of drilling a subterranean geological formation is described. The method includes driving a drill bit to form a wellbore into the subterranean geological formation thereby producing a formation fluid including hydrogen sulfide (H2S). The method includes injecting a drilling fluid into the subterranean geological formation through the wellbore. The drilling fluid composition includes 0.25 to 2 wt.% of a primary H2S scavenger which is potassium permanganate. The drilling fluid composition includes an invert emulsion includes a continuous phase including palm oil and a dispersive phase including water. The potassium permanganate present in the drilling fluid composition reacts with the H2S present in the formation fluid to produce a dispersion of manganese-containing particles which are at least one selected from the group consisting of manganese sulfide and manganese sulfate.
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公开(公告)号：US20220220356A1
公开(公告)日：2022-07-14
申请号：US17595244
申请日：2020-05-15
发明人： Dimitri M. Khramov , Stephen Cliffe , Reda Karoum
摘要： Wellbore fluids may include an oleaginous continuous phase; a non-oleaginous discontinuous phase; and a polymeric amidoamine emulsifier stabilizing the non-oleaginous discontinuous phase in the oleaginous continuous phase, wherein the polymeric amidoamine emulsifier has at least 5 repeating units. Wellbore fluids may include an oleaginous continuous phase; a non-oleaginous discontinuous phase; and a polymeric amidoamine emulsifier stabilizing the non-oleaginous discontinuous phase in the oleaginous continuous phase, wherein the polymeric amidoamine emulsifier includes at least 3 repeating units selected from allylamine, polyaminopolyamide, N-alkyl acrylamides, (meth)acrylic acid, alkyleneamine reacted with a dicarboxylic acid, alpha-olefin-alt-maleic anhydride, styrene maleic anhydride, alkylene oxide, wherein one or more amine or acid group on the repeating unit is amidized.
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公开(公告)号：US20210332282A1
公开(公告)日：2021-10-28
申请号：US16859201
申请日：2020-04-27
摘要： An invert-emulsion drilling fluid may include a dispersed aqueous phase including an aqueous base fluid, a continuous non-aqueous phase including a non-aqueous base fluid, and a first bridging package. The first bridging package may include one or more particulate carbonate materials. All of the particulate carbonate materials of the invert-emulsion drilling fluid may be part of the first bridging package. The first bridging package may have a trimodal particle size distribution such that the particle size distribution of the first bridging package includes three peaks, wherein each peak may be in the range of less than or equal to 300 microns in the particle size distribution. The invert-emulsion drilling fluid may be included in methods for reducing lost circulation in subterranean formations during drilling operations.
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公开(公告)号：US20210246352A1
公开(公告)日：2021-08-12
申请号：US17241505
申请日：2021-04-27
发明人： Mario A. Ramirez , Oyindunmola S. Dina , Ryan A. Pritchard , Katrina I. Schultz , Christopher B. Jackson , Elan Watson , Marcus D. Banks , Carleton E. Stouffer , Marshall D. Bishop
摘要： A water-based drilling mud composition may include an aqueous carrier, an asphalt sulfonate salt, and insoluble latex particles. The insoluble latex particles promote stabilization of an emulsion formed in response to introduction of an oil phase in the composition. The composition may include the emulsion including an oil phase dispersed as droplets in the aqueous carrier. The dispersed insoluble latex particles may be present in an oil-water interface between the oil phase and an aqueous phase of the aqueous carrier.
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公开(公告)号：US11034875B2
公开(公告)日：2021-06-15
申请号：US16381783
申请日：2019-04-11
IPC分类号： C09K8/74 , C09K8/24 , E21B21/00 , C09K8/22 , C09K8/467 , C10M173/00 , C04B24/02 , C04B28/02 , C04B28/04 , C04B28/08 , E21B43/25 , C09K8/03 , C09K8/20 , B01F17/00 , C09K8/40 , E21B33/14 , C09K8/035 , C09K8/08 , C09K8/42 , C09K8/48 , C04B24/08 , C09K8/487 , C04B7/52 , C09K8/46 , C09K8/04 , C04B14/06 , C04B38/02 , C10M105/18 , C10M105/62 , C10M107/34 , C10M111/04 , C09K8/32 , C09K8/36 , C10M173/02 , C10N20/02 , C10N20/04 , C10N20/00 , C10N30/06 , C10N40/22 , C10N50/00 , C10N40/00 , C09K8/514 , C09K8/28 , C04B103/40 , C04B103/46 , C04B111/00
摘要： A wellbore servicing fluid comprises an aqueous base fluid, one or more alkali metal or alkali earth metal salts, at least one visocisifier, and a filtration control package. The filtration control package may comprise a carboxylic acid and an ethoxylated alcohol compound. Alternatively, the filtration control package may comprise a polyethylene glycol. The carboxylic acid may have from 8 to 20 carbon atoms. The ethoxylated alcohol compound may have a general formula R—(OCH2CH2)X—OH, where R is a hydrocarbon having from 10 to 16 atoms and x is an integer from 6 to 9. The ethoxylated alcohol compound may have a hydrophilic-lipophilic balance of from 8.0 to 16.0. The polyethylene glycol may have a mass average molar mass (Mw) of less than or equal to 1500 daltons.
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公开(公告)号：US20210164327A1
公开(公告)日：2021-06-03
申请号：US17094929
申请日：2020-11-11
发明人： MATTHEW TOEWS , MICHAEL HOLMES
摘要： Methods for drilling in higher temperature rock formations such as geothermal formations with phase change material augmented drilling fluid are disclosed. By observing flow rate of the augmented fluid, heat exchange between the annulus returning fluid and tubular fluid can be minimized thereby facilitating a cooler fluid for contact with a rock face being drilled. The cooling assists in pre-fracturing the rock face prior to destruction by the drill bit.
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公开(公告)号：US10961432B2
公开(公告)日：2021-03-30
申请号：US16296904
申请日：2019-03-08
申请人： BASF SE
发明人： Christian Bittner , Günter Oetter , Sebastian Alexander Weiße , Hans-Christian Raths , Jack Tinsley , Marcel Kienle
摘要： The present invention relates to a method for producing mineral oil from underground mineral oil deposits, in which an aqueous formulation comprising at least a mixture of alkyl ether carboxylate and corresponding alkyl ether alcohol, where the alkyl ether carboxylate has been prepared from the alkyl ether alcohol and the molar ratio in the mixture of alkyl ether carboxylate:alkyl ether alcohol is from 51:49 to 92:8, is injected through at least one injection well into a mineral oil deposit, where the deposit has a deposit temperature of 55° C. to 150° C., a crude oil having more than 20° API and a deposit water having more than 100 ppm of divalent cations, and crude oil is withdrawn through at least one production well from the deposit. The invention further relates to the preparation of the mixture and to a concentrate comprising the mixture.
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公开(公告)号：US20200369940A1
公开(公告)日：2020-11-26
申请号：US16476222
申请日：2019-07-03
发明人： Catherine Martin Santos , Li Guo
摘要： Quaternary ammonium compounds and methods of using such compounds to, for example, break oil-in-water emulsion treatment fluids are provided. In some embodiments, such methods include introducing a quaternary ammonium compound into an oil-in-water emulsion treatment fluid that comprises an oleaginous phase and an aqueous phase; and centrifuging at least the portion of the oil-in-water emulsion treatment fluid to separate at least a portion of the oil-in-water emulsion treatment fluid into an oleaginous fluid and an aqueous fluid.
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