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公开(公告)号：US06269876B1
公开(公告)日：2001-08-07
申请号：US09264436
申请日：1999-03-08
IPC分类号： E21B3604
CPC分类号： E21B36/04
摘要： A heater is disclosed, the heater including: a porous metal sheet heating element; and an electrical insulating material surrounding the porous metal sheet heating element; wherein there is no casing surrounding the porous metal sheet heating element.
摘要翻译： 公开了一种加热器，所述加热器包括：多孔金属片加热元件; 以及围绕多孔金属片加热元件的电绝缘材料; 其中没有围绕多孔金属片加热元件的套管。
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公开(公告)号：US6023554A
公开(公告)日：2000-02-08
申请号：US80683
申请日：1998-05-18
CPC分类号： E21B36/04 , B09C1/062 , E02D3/11 , B09C2101/00
摘要： A heater is disclosed, the heater comprising: a heating element effective to generate radiant energy; a casing surrounding the heating element separated from the heating element; and support material between the casing and the heating element wherein the support material comprises a granular solid material that is translucent to radiant energy in the peak wavelength of energy which is radiated by the heating element at operating temperatures. The translucency of the support material is such that at least 50% of the radiant energy emitted by the heating element is radiated to the casing.
摘要翻译： 公开了一种加热器，该加热器包括：有效产生辐射能的加热元件; 围绕加热元件的壳体与加热元件分离; 以及壳体和加热元件之间的支撑材料，其中支撑材料包括粒状固体材料，其在工作温度下由加热元件辐射的能量的峰值波长中的辐射能是半透明的。 支撑材料的半透明度使得由加热元件发射的辐射能量的至少50％辐射到壳体。
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公开(公告)号：US20070158064A1
公开(公告)日：2007-07-12
申请号：US10584418
申请日：2004-12-22
CPC分类号： G01F1/6884 , E21B47/1005
摘要： A method of determining a fluid inflow profile along the length of a permeable inflow region of an underground wellbore comprising: transferring heat into or from the permeable inflow region of the wellbore during a well shut period; starting production of hydrocarbon fluids via the permeable inflow region; measuring substantially simultaneously the temperature of the fluids at various points of the inflow region; determining at selected intervals of time after production start up a temperature profile of the inflow region on the basis of the thus measured temperatures; and determining a fluid inflow profile of the inflow region on the basis of a comparison of the determined temperature profiles at selected intervals after production start up. The heater cable may have a layer of compacted mineral powder and temperatures may be measured with an optical fiber.
摘要翻译： 一种确定沿地下井筒的可渗透流入区域的长度的流体流入分布的方法，包括：在井闭合期间将热量传入或流出井筒的可渗透流入区域; 通过可渗透流入区域开始生产烃流体; 在流入区域的各个点处基本上同时测量流体的温度; 基于由此测量的温度，在生产之后的选定间隔时间确定流入区域的温度曲线; 并且基于在生产启动之后的选定间隔的所确定的温度分布的比较来确定流入区域的流体流入分布。 加热器电缆可以具有一层压实的矿物粉末，并且可以用光纤测量温度。
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