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公开(公告)号：US09676121B2
公开(公告)日：2017-06-13
申请号：US14557033
申请日：2014-12-01
CPC分类号： B29B9/065 , B29B9/12 , B29B9/14 , B29B2009/125 , B29K2077/00 , B29L2031/772 , C08G69/26 , C08J3/12 , C08J2377/06 , C08K3/34 , C09K8/80 , Y10T428/2982
摘要： Certain polyamide beads or granules are useful as a sustaining material for underground natural or artificial cracks of the earth's crust essentially employed for the extraction of hydrocarbons such as crude oil or natural gas; such polyamide beads have a spherical or ellipsoidal shape and have a surface free of concave portions, advantageously having a uniform shape, and having a mean diameter lower than or equal to 1.7 mm and a porosity lower than 0.1 ml/g, and are produced using a particular cutting device/extruder.
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公开(公告)号：US20150151452A1
公开(公告)日：2015-06-04
申请号：US14557033
申请日：2014-12-01
CPC分类号： B29B9/065 , B29B9/12 , B29B9/14 , B29B2009/125 , B29K2077/00 , B29L2031/772 , C08G69/26 , C08J3/12 , C08J2377/06 , C08K3/34 , C09K8/80 , Y10T428/2982
摘要： Certain polyamide beads or granules are useful as a sustaining material for underground natural or artificial cracks of the earth's crust essentially employed for the extraction of hydrocarbons such as crude oil or natural gas; such polyamide beads have a spherical or ellipsoidal shape and have a surface free of concave portions, advantageously having a uniform shape, and having a mean diameter lower than or equal to 1.7 mm and a porosity lower than 0.1 ml/g, and are produced using a particular cutting device/extruder.
摘要翻译： 某些聚酰胺珠或颗粒可用作基本用于提取烃类如原油或天然气的地壳的地下天然或人造裂纹的维持材料; 这种聚酰胺珠粒具有球形或椭圆形形状，并且具有没有凹部的表面，有利地具有均匀的形状，并且具有小于或等于1.7mm的平均直径和小于0.1ml / g的孔隙，并且使用 特定的切割装置/挤出机。
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公开(公告)号：US10940612B2
公开(公告)日：2021-03-09
申请号：US16261734
申请日：2019-01-30
IPC分类号： B29B9/06 , B29B9/12 , C08G69/26 , C08J3/12 , C08K3/34 , C09K8/80 , B29B9/14 , B29K77/00 , B29L31/00
摘要： Certain polyamide beads or granules are useful as a sustaining material for underground natural or artificial cracks of the earth's crust essentially employed for the extraction of hydrocarbons such as crude oil or natural gas; such polyamide beads have a spherical or ellipsoidal shape and have a surface free of concave portions, advantageously having a uniform shape, and having a mean diameter lower than or equal to 1.7 mm and a porosity lower than 0.1 ml/g, and are produced using a particular cutting device/extruder.
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