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公开(公告)号：US09834664B2
公开(公告)日：2017-12-05
申请号：US14381813
申请日：2013-02-28
发明人： David Hepworth , Eric Whale
IPC分类号： C08H8/00 , C08L1/02 , C09D5/02 , C09D7/00 , C09D163/00 , D21C1/06 , D21C3/02 , D21H11/06 , D21H15/02 , D21H15/08 , C09D7/02
CPC分类号： C08L1/02 , C08H8/00 , C08L2205/02 , C08L2205/14 , C09D5/024 , C09D7/43 , C09D7/45 , C09D7/65 , C09D7/70 , C09D163/00 , D21C1/06 , D21C3/02 , D21H11/06 , D21H15/02 , D21H15/08 , C08L5/06 , C08L5/14
摘要： A composition and method of preparing a composition is presented wherein the composition comprises cellulose platelets and the cellulose platelets comprise at least 60% cellulose by dry weight, less than 10% pectin by dry weight and at least 5% hemicellulose by dry weight. The composition can be concentrated to at least 25% by weight solids content by pressing under low pressure, whilst retaining the ability to be re suspended within an aqueous medium. The resulting aqueous medium obtains the desired properties of the composition, such as increased viscosity or increased dispersion of pigment particles, for example, to the same extent as the composition before pressing.
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公开(公告)号：US20150203737A1
公开(公告)日：2015-07-23
申请号：US14417513
申请日：2013-07-26
CPC分类号： C09K8/10 , C09K8/206 , C12P19/02 , C12P19/14 , D21C3/02 , D21C5/00 , D21C5/005 , D21C9/002 , D21C9/004 , D21C9/007 , D21H11/18
摘要： This invention relates to water-based well drilling fluids. It has been found that cellulose based particles, which comprise cell wall material and their networks of cellulose based fibers and nanofibrils can be used to produce suspensions having viscosity and rheological properties particularly suitable for use as a drilling fluid. It is assumed that the organization of the cellulose fibrils, as it exists in the parenchymal cell walls, is at least partly retained in the cellulose based particles of the invention, even though part of the pectin and hemicellulose is removed there from. Breaking plant-based pulp down into this kind of cellulose based particles involves fewer and gentler processes than to break the pulp down further into cellulose nanofibrils, and therefore the present cellulose based particles can be produced much faster and at lower cost than completely unraveled cellulose nanofibrils. The well drilling fluids based on the cellulose material of this invention are stable over a wide range of operating temperatures.
摘要翻译： 本发明涉及水基钻井液。 已经发现，包含细胞壁材料的纤维素基颗粒及其纤维素基纤维和纳米原纤维的网络可用于制备具有特别适合用作钻井液的粘度和流变特性的悬浮液。 假设纤维素原纤维的组织，如其存在于实质细胞壁中，至少部分地保留在本发明的纤维素基颗粒中，即使部分果胶和半纤维素从那里去除。 将基于植物的纸浆打碎成这种基于纤维素的颗粒涉及比将纸浆进一步分解成纤维素纳米原纤维更少和温和的方法，因此与纤维素纳米原纤维相比，本发明的纤维素基颗粒可以以更快的速度和更低的成本生产 。 基于本发明的纤维素材料的钻井液在宽范围的工作温度下是稳定的。
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3.发明申请公开(公告)号：US20180134877A1
公开(公告)日：2018-05-17
申请号：US15814075
申请日：2017-11-15
发明人： David Hepworth , Eric Whale
IPC分类号： C08L1/02 , D21H11/06 , D21H15/02 , D21H15/08 , C08H8/00 , C09D5/02 , D21C3/02 , D21C1/06 , C09D163/00 , C08L5/06 , C08L5/14
CPC分类号： C08L1/02 , C08H8/00 , C08L2205/02 , C08L2205/14 , C09D5/024 , C09D7/43 , C09D7/45 , C09D7/65 , C09D7/70 , C09D163/00 , D21C1/06 , D21C3/02 , D21H11/06 , D21H15/02 , D21H15/08 , C08L5/06 , C08L5/14
摘要： A composition and method of preparing a composition is presented wherein the composition comprises cellulose platelets and the cellulose platelets comprise at least 60% cellulose by dry weight, less than 10% pectin by dry weight and at least 5% hemicellulose by dry weight. The composition can be concentrated to at least 25% by weight solids content by pressing under low pressure, whilst retaining the ability to be re suspended within an aqueous medium. The resulting aqueous medium obtains the desired properties of the composition, such as increased viscosity or increased dispersion of pigment particles, for example, to the same extent as the composition before pressing.
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公开(公告)号：US10400092B2
公开(公告)日：2019-09-03
申请号：US15814075
申请日：2017-11-15
发明人： David Hepworth , Eric Whale
IPC分类号： C08L1/02 , C08H8/00 , C09D5/02 , C09D163/00 , D21C1/06 , D21C3/02 , D21H11/06 , D21H15/02 , D21H15/08 , C09D7/43 , C09D7/45 , C09D7/65 , C09D7/40
摘要： A composition and method of preparing a composition is presented wherein the composition comprises cellulose platelets and the cellulose platelets comprise at least 60% cellulose by dry weight, less than 10% pectin by dry weight and at least 5% hemicellulose by dry weight. The composition can be concentrated to at least 25% by weight solids content by pressing under low pressure, whilst retaining the ability to be re suspended within an aqueous medium. The resulting aqueous medium obtains the desired properties of the composition, such as increased viscosity or increased dispersion of pigment particles, for example, to the same extent as the composition before pressing.
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公开(公告)号：US09617459B2
公开(公告)日：2017-04-11
申请号：US14417513
申请日：2013-07-26
CPC分类号： C09K8/10 , C09K8/206 , C12P19/02 , C12P19/14 , D21C3/02 , D21C5/00 , D21C5/005 , D21C9/002 , D21C9/004 , D21C9/007 , D21H11/18
摘要： This invention relates to water-based well drilling fluids. It has been found that cellulose based particles, which comprise cell wall material and their networks of cellulose based fibers and nanofibrils can be used to produce suspensions having viscosity and rheological properties particularly suitable for use as a drilling fluid. It is assumed that the organization of the cellulose fibrils, as it exists in the parenchymal cell walls, is at least partly retained in the cellulose based particles of the invention, even though part of the pectin and hemicellulose is removed there from. Breaking plant-based pulp down into this kind of cellulose based particles involves fewer and gentler processes than to break the pulp down further into cellulose nanofibrils, and therefore the present cellulose based particles can be produced much faster and at lower cost than completely unraveled cellulose nanofibrils. The well drilling fluids based on the cellulose material of this invention are stable over a wide range of operating temperatures.
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