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公开(公告)号：US10703955B2
公开(公告)日：2020-07-07
申请号：US15322345
申请日：2015-06-29
发明人： Takayuki Shimaoka , Yuichi Noguchi , Ikue Homma , Mitsuru Tsunoda
IPC分类号： C09K8/10 , C09K8/68 , C09K8/90 , C09K8/035 , C08B5/00 , C08L1/16 , C09K8/514 , C09K8/40 , C09K8/42 , C09K8/575 , C09K8/72 , C09K8/92 , C09K8/70 , C09K8/516
摘要： The object is to provide a subterranean formation processing composition which has a highly stable viscosity against change in temperature and a high water stopping property. A subterranean formation processing composition comprising cellulose fibers wherein the composition contains ultrafine cellulose fibers having 0.14 to 2.5 mmol/g of a substituent is used. The substituent is preferably an anion group, particularly a phosphoric acid group. The present invention relates to various fluids which are used in well processing. The present invention relates to a method for processing a subterranean formation, for example, drilling of an exploratory well or a wildcat, an appraisal well, an exploratory well or an exploration well, a delineation well, a development well, a production well, an injection well, an observation well, and a service well; cementing; fracturing; and a method for producing petroleum resources. The present invention provides also a cellulose fiber-containing composition which is not limited to the subterranean formation processing use.
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公开(公告)号：US10697118B2
公开(公告)日：2020-06-30
申请号：US14895359
申请日：2014-05-21
发明人： Eiichi Mikami , Mitsuru Tsunoda , Hayato Fushimi
摘要： The present invention was accomplished in order to provide a method for producing a sheet containing fine fibers, which enables production of a sheet containing fine fibers without producing wrinkles. The present invention provides a method for producing a sheet containing fine fibers comprising a coating step of coating a dispersion containing fine fibers having a fiber diameter of 1000 nm or smaller on a base material, and a drying step of drying the dispersion containing fine fibers coated on the base material to form a sheet containing fine fibers.
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公开(公告)号：US10550305B2
公开(公告)日：2020-02-04
申请号：US15322382
申请日：2015-06-29
发明人： Takayuki Shimaoka , Yuichi Noguchi , Ikue Homma , Mitsuru Tsunoda
IPC分类号： C09K8/10 , E21B21/00 , C09K8/42 , C09K8/72 , E21B43/26 , C09K8/40 , C09K8/68 , C09K8/90 , C09K8/575 , E21B33/14
摘要： An object is to provide a dispersion of ultrafine cellulose fibers having a high thickening effect and a gelling function. There is provided a subterranean formation processing composition comprising ultrafine cellulose fibers, which has a haze value of 1.0% to 50%, when the composition is suspended in water such that the solid concentration of cellulose fibers is 0.2% by mass. The composition of the present invention can be used as an additive to the fluid at the time of the processing of subterranean formation, especially the processing of the well. The present invention provides also various fluids which are used in well processing. The present invention provides a method for processing a subterranean formation, for example, drilling of an exploratory well or a wildcat, an appraisal well, an exploratory well or an exploration well, a delineation well, a development well, a production well, an injection well, an observation well, and a service well; cementing; fracturing; and a method for producing petroleum resources.
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公开(公告)号：US11542659B2
公开(公告)日：2023-01-03
申请号：US16863899
申请日：2020-04-30
发明人： Eiichi Mikami , Mitsuru Tsunoda , Hayato Fushimi
摘要： The present invention was accomplished in order to provide a method for producing a sheet containing fine fibers, which enables production of a sheet containing fine fibers without producing wrinkles. The present invention provides a method for producing a sheet containing fine fibers comprising a coating step of coating a dispersion containing fine fibers having a fiber diameter of 1000 nm or smaller on a base material, and a drying step of drying the dispersion containing fine fibers coated on the base material to form a sheet containing fine fibers.
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公开(公告)号：US11118103B2
公开(公告)日：2021-09-14
申请号：US15519229
申请日：2015-10-13
发明人： Ikue Homma , Takayuki Shimaoka , Moe Mizukami , Takuri Ozaki , Yuichi Noguchi , Mitsuru Tsunoda
IPC分类号： D01F2/24 , D01F2/00 , E21B43/28 , C09K8/60 , C09K3/00 , D21H11/20 , C08L5/00 , C09K8/90 , C09K8/467 , C08L1/02 , C09K8/575 , C09K8/72 , C09K8/516 , C09K8/40 , C09K8/68 , C04B40/00 , C09K8/035 , C04B28/02 , C09K8/508 , C09K8/514 , C09K8/88 , C09K8/10 , C08K3/24
摘要： An object of the present invention is to provide a salt water thickener that uniformly (favorably) disperses ultrafine cellulose fibers even in a liquid containing a salt (electrolyte). The salt water thickener comprises ultrafine cellulose fibers and a water-soluble polymer and can thereby uniformly disperse the ultrafine cellulose fibers even in a liquid containing a salt. The salt water thickener of the present invention is uniformly dispersed even in a liquid containing a salt and therefore exerts a high viscosity. The salt water thickener of the present invention can also be used as an additive for a fluid. The salt water thickener of the present invention can be used for purposes, for example, subterranean formation processing.
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