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1. 发明授权

US11035195B2 Methods of mitigating lost circulation while drilling a wellbore 有权
公开(公告)号：US11035195B2
公开(公告)日：2021-06-15
申请号：US16189586
申请日：2018-11-13
申请人： Bill R. Meeks , Timothy J. Nedwed , Douglas A. Mitchell , Rachna Jain , Kaustubh S. Kulkarni
发明人： Bill R. Meeks , Timothy J. Nedwed , Douglas A. Mitchell , Rachna Jain , Kaustubh S. Kulkarni
IPC分类号： E21B33/12 , E21B21/00 , E21B33/138 , E21B33/10 , C09K8/44 , C09K8/42 , E21B33/134
摘要： Methods of mitigating lost circulation while drilling a wellbore. The methods include circulating a drilling mud to a downhole end of the wellbore via a drill string and, during the circulating, drilling the wellbore with a drill bit of the drill string. The methods also include detecting lost circulation within the wellbore while drilling the wellbore and include providing a monomer solution to the wellbore. The methods further include providing a catalyst to the wellbore responsive to detecting the lost circulation event and combining the monomer solution and the catalyst to polymerize a monomer from the monomer solution, within the wellbore, and forming a viscous plug within the wellbore. Subsequent to the combining, the methods include flowing at least a portion of the viscous plug within the wellbore and into a zone of lost circulation that extends within a subsurface region. The methods further include at least partially occluding fluid flow from the wellbore and into the zone of lost circulation with the viscous plug.

2. 发明申请

US20190186231A1 Methods of Mitigating Lost Circulation While Drilling a Wellbore 审中-公开
公开(公告)号：US20190186231A1
公开(公告)日：2019-06-20
申请号：US16189586
申请日：2018-11-13
申请人： Bill R. Meeks , Timothy J. Nedwed , Douglas A. Mitchell , Rachna Jain , Kaustubh S. Kulkarni
发明人： Bill R. Meeks , Timothy J. Nedwed , Douglas A. Mitchell , Rachna Jain , Kaustubh S. Kulkarni
IPC分类号： E21B33/12 , E21B33/134
CPC分类号： E21B33/1208 , C09K8/426 , C09K8/44 , E21B33/134
摘要： Methods of mitigating lost circulation while drilling a wellbore. The methods include circulating a drilling mud to a downhole end of the wellbore via a drill string and, during the circulating, drilling the wellbore with a drill bit of the drill string. The methods also include detecting lost circulation within the wellbore while drilling the wellbore and include providing a monomer solution to the wellbore. The methods further include providing a catalyst to the wellbore responsive to detecting the lost circulation event and combining the monomer solution and the catalyst to polymerize a monomer from the monomer solution, within the wellbore, and forming a viscous plug within the wellbore. Subsequent to the combining, the methods include flowing at least a portion of the viscous plug within the wellbore and into a zone of lost circulation that extends within a subsurface region. The methods further include at least partially occluding fluid flow from the wellbore and into the zone of lost circulation with the viscous plug.

3. 发明授权

US4249472A Thermal reactors 失效
标题翻译：热反应堆
公开(公告)号：US4249472A
公开(公告)日：1981-02-10
申请号：US957727
申请日：1978-11-06
申请人： Douglas A. Mitchell
发明人： Douglas A. Mitchell
IPC分类号： B01J8/12 , B01J8/18 , B01J8/24 , B01J8/38 , B01J8/42 , F23C10/02 , F23C10/14 , F23G5/30 , F27B15/00 , F23G5/00 , F22B1/02 , F23G7/00
CPC分类号： B01J8/386 , F23C10/14 , F23G5/30 , F23G2203/502
摘要： A thermal reactor, for example an incinerator, in which an upstanding partition wall in a furnace vessel defines adjacent, interconnecting compartments each containing a bed of particulate material, said beds being fluidized to different extent whereby a cascade of particulate bed material flows across the of the wall from the more fluidized bed to the less fluidized bed and circulation of said bed material around the partition wall is established.
摘要翻译：一种热反应器，例如焚烧炉，其中炉容器中的直立分隔壁限定相邻的相互连接的隔室，每个隔间包含颗粒材料床，所述床被流化到不同程度，从而一系列颗粒床材料流过建立了从较流化床到较少流化床的壁和围绕分隔壁的所述床材料的循环。

4. 发明授权

US4306537A Gas fire 失效
标题翻译：气火
公开(公告)号：US4306537A
公开(公告)日：1981-12-22
申请号：US59949
申请日：1979-07-23
申请人： Douglas A. Mitchell
发明人： Douglas A. Mitchell
IPC分类号： F24C3/00 , F24C3/04
CPC分类号： F24C3/006
摘要： A solid-fuel effect gas fire comprises an open-topped tray containing a mass of particulate refractory material, means for introducing gas into the tray to percolate upwards to the surface of the refractory material, an apertured or porous plate overlying, but spaced from, part of the surface of the particulate material, and a plurality of refractory bodies, shaped and colored to simulate solid fuel, heaped on the plate and the part of the tray which is not covered by the plate. In use, the fire operates with a mixture of luminous and non-luminous flames and closely resembles a conventional solid-fuel fire. The ratio of carbon dioxide to carbon monoxide in the gases of combustion is from 1:0.01 to 1:0.005.
摘要翻译：固体燃料效应气体火焰包括含有大量颗粒耐火材料的开顶托盘，用于将气体引入托盘中以向上渗透到耐火材料表面的装置，多孔或多孔板，颗粒材料的表面的一部分，以及多个耐火体，其形状和着色以模拟固体燃料，堆积在板上和托盘的未被板覆盖的部分上。在使用中，火焰与发光和非发光的火焰混合起来，非常类似于常规的固体燃料火灾。燃烧气体中二氧化碳与一氧化碳的比例为1:0.01至1:0.005。

5. 发明授权

US4110063A Gas fire 失效
标题翻译：气火
公开(公告)号：US4110063A
公开(公告)日：1978-08-29
申请号：US701607
申请日：1976-07-01
申请人： Douglas A. Mitchell
发明人： Douglas A. Mitchell
IPC分类号： F23D14/12 , F24C3/00 , F24C3/04
CPC分类号： F24C3/006 , F23D14/12
摘要： A heating appliance operated from a gaseous fuel comprises a plurality of refractory bodies simulating solid fuel mounted on the top of a distributor for the gaseous fuel. To ensure that at least some of the gaseous fuel burns at a high temperature thereby causing the simulated solid fuel to be heated and to "glow" at least one duct leads to the upper side of the gas distributor so that air can be passed along the duct to mix with the gaseous fuel.
摘要翻译：从气体燃料运行的加热设备包括模拟固定燃料的多个耐火体，该固体燃料安装在用于气体燃料的分配器的顶部上。为了确保至少一些气体燃料在高温下燃烧，从而导致模拟的固体燃料被加热并且“发光”至少一个导管通向气体分配器的上侧，使得空气可沿着管道与气态燃料混合。

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