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公开(公告)号：US12116859B2
公开(公告)日：2024-10-15
申请号：US17809759
申请日：2022-06-29
IPC分类号： E21B25/08 , C04B24/32 , C04B26/06 , C09K8/02 , C09K8/34 , C09K8/42 , C09K8/44 , E21B21/08 , E21B33/138 , E21B49/00 , C04B103/00 , C04B103/22
CPC分类号： E21B33/138 , C04B24/32 , C04B26/06 , C09K8/02 , C09K8/34 , C09K8/42 , C09K8/44 , E21B21/08 , E21B25/08 , E21B49/00 , C04B2103/0062 , C04B2103/22
摘要： The present invention relates to a method of taking a core sample of a formation. The method includes reducing a viscosity of a water binding starting material in a pumping form. The water binding starting material includes at least one polymer, at least one cross linker capable of curing the at least one polymer and a retarder capable of delaying cross linking of the at least one polymer. At least one additive is added to the water binding starting material to reduce the viscosity of the water binding starting material to less than 2 times of a viscosity of water at a selected temperature. The method further includes pumping the water binding starting material into a borehole in a formation, allowing the water binding starting material to cure in the formation, and taking the core sample from the formation containing the cured water binding starting material.
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公开(公告)号：US12091818B2
公开(公告)日：2024-09-17
申请号：US17209388
申请日：2021-03-23
发明人： Kimberly Nelson , Theodora Retsina
IPC分类号： D21C9/00 , C07G1/00 , C08B15/08 , C08B37/00 , C12P7/10 , D21B1/06 , D21B1/12 , D21B1/14 , D21C1/02 , D21C5/00 , D21C11/00 , D21H11/16 , D21H11/18 , C08H8/00 , C09K8/10 , C09K8/34 , C09K8/64 , C09K8/68 , C13K1/02 , D21C3/00 , D21C3/06 , D21C9/10
CPC分类号： D21C9/007 , C07G1/00 , C08B15/08 , C08B37/0057 , C12P7/10 , D21B1/061 , D21B1/12 , D21B1/14 , D21C1/02 , D21C5/005 , D21C11/0007 , D21H11/16 , D21H11/18 , C08H8/00 , C09K8/10 , C09K8/34 , C09K8/64 , C09K8/68 , C13K1/02 , D21C3/003 , D21C3/006 , D21C3/06 , D21C9/10
摘要： Various processes are disclosed for producing nanocellulose materials following steam extraction or hot-water digestion of biomass. Processes are also disclosed for producing nanocellulose materials from a wide variety of starting pulps or pretreated biomass feedstocks. The nanocellulose materials may be used as rheology modifiers in many applications. Water-based and oil-based drilling fluid formulations and additives are provided. Also, water-based and oil-based hydraulic fracturing fluid formulations and additives are provided. In other embodiments, polymer-nanocellulose composites are provided.
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公开(公告)号：US11999899B2
公开(公告)日：2024-06-04
申请号：US17518298
申请日：2021-11-03
发明人： Ronald J. Lawrence
摘要： A solvent blend for breaking down and reducing the viscosity of petroleum substance consists essentially of one or more methyl esters of C14-C18 fatty acids, one or more C9-C20 low aromatic hydrocarbon solvents, and one or more C4-C8 high aromatic hydrocarbon solvents, with the high aromatic solvent fraction being dispersed within the solvent blend in droplet form. The solvent blend may be produced by mixing the high aromatic solvent fraction into an intermediate or base blend consisting essentially of the methyl ester fraction and the low aromatic solvent fraction, with the base blend being produced by mixing the lower aromatic solvent fraction into the methyl ester fraction such that the lower aromatic solvent fraction is dispersed within the methyl ester fraction in droplet form.
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公开(公告)号：US11739628B2
公开(公告)日：2023-08-29
申请号：US16934602
申请日：2020-07-21
发明人： Peter J. Boul , Ashok Santra
IPC分类号： E21B47/005 , E21B47/13 , C09K8/03 , C09K8/34 , C09K8/40 , C09K8/42 , C09K8/467 , E21B33/14 , G01V3/20
CPC分类号： E21B47/005 , C09K8/032 , C09K8/34 , C09K8/40 , C09K8/424 , C09K8/467 , E21B33/14 , E21B47/13 , G01V3/20 , C09K2208/08 , C09K2208/10
摘要： Methods of determining the integrity of a well are provided. The methods include mixing conductive materials into a fluid, introducing the fluid into the well, and allowing the conductive materials to coat a surface of a subsurface formation, thereby forming an electrically conductive data conduit coating. The methods further include transmitting data through the electrically conductive data conduit coating to determine the integrity of the well.
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公开(公告)号：US20230167350A1
公开(公告)日：2023-06-01
申请号：US17538609
申请日：2021-11-30
摘要： An invert oil-based mud (OBM) includes an oleaginous continuous phase, an aqueous internal phase, and an emulsifier that has two hydrophilic head groups and a hydrophobic tail group. A method of using an invert oil-based mud (OBM) in a wellbore is provided. The method includes introducing the invert OBM, which includes an oleaginous continuous phase, an aqueous internal phase, and an emulsifier with two hydrophilic head groups and a hydrophobic tail group into the wellbore. A method of preparing an invert oil-based mud (OBM) is also provided. The method includes mixing an emulsifier comprising two hydrophilic head groups and a hydrophobic tail group with an oleaginous phase and an aqueous phase.
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公开(公告)号：US11608462B2
公开(公告)日：2023-03-21
申请号：US16991531
申请日：2020-08-12
摘要： A drilling fluid comprises one or more deep eutectic solvents in an amount greater than or equal to 70 wt. % based on the total weight of the drilling fluid. Each deep eutectic solvent comprises at least one hydrogen bond acceptor compound and at least one hydrogen bond donor compound. A molar ratio of the total moles of the hydrogen bond donor compounds to the total moles of the hydrogen bond acceptor compounds in each deep eutectic solvent is from 0.1 to 1.0. The drilling fluid has a density greater than or equal to 200 kg/m3. The drilling fluid has a viscosity greater than or equal to 0.5 Pa·s when measured at 25° C. Methods for drilling wells in subterranean formations using the drilling fluid are also disclosed.
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公开(公告)号：US20230017294A1
公开(公告)日：2023-01-19
申请号：US17857390
申请日：2022-07-05
发明人： Jinsheng SUN , Kaihe Lv , Xianbin Huang , Yuan Geng , Jingping Liu , Yingrui Bai , Jintang Wang , Jiafeng Jin
IPC分类号： C09K8/34
摘要： The present disclosure relates to the technical field of oilfield chemistry. A flocculating agent for removing oil-based drilling fluid rock cuttings and a preparation method and a use thereof.
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公开(公告)号：US11492533B2
公开(公告)日：2022-11-08
申请号：US17051673
申请日：2018-05-17
发明人： Pedro Parra Mantilla , Marcio Rocha Mello , Álvaro Piquet Carneiro Pessoa Dos Santos , Marcos José Lourenco Ferreira
摘要： The present invention relates to a viscosity modifying, demulsifier and flow improver composition for use in (crude) petroleum, its method of manufacture, and its uses, among them, to improve the flowability of heavy and extra-heavy crude oils, to increase the production of oil in the well and to improve the quality of the oil permanently produced from the addition of a formulated product containing conditioned organic surfactants for each type of crude oil.
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公开(公告)号：US11339317B1
公开(公告)日：2022-05-24
申请号：US17420774
申请日：2020-01-13
申请人： LAMBERTI SPA
发明人： Erik Gallo , Lorena Bottarello , Luigi Merli , Pierangelo Pirovano , Massimo Cecchetto , Laura Vigano′ , Giovanni Floridi , Giuseppe Li Bassi
IPC分类号： C09K8/34
摘要： A method of minimizing the weight loss of mass of the drilling pipe and wellbore casing while drilling a subterranean well with an oil-based drilling fluid comprising adding to the oil-based drilling fluid an anti-wear additive based on sulfated, sulfonated or sulfited natural oils or fats of vegetable or animal origin.
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公开(公告)号：US11332653B2
公开(公告)日：2022-05-17
申请号：US16634976
申请日：2018-07-30
申请人： SHELL OIL COMPANY
发明人： Burnell Lee , David Matthew Brown , Graham Francis Whale , Michael James Spence , Delina Yvonne-Marie de Souza Lyon
摘要： The present invention relates to drilling fluid comprising one or more linear internal olefin having from 15 to 18 carbon atoms and containing less than 25% branching based on the total amount of the linear internal olefin and a hydrogenated Fischer-Tropsch derived product.
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