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公开(公告)号：US10793786B2
公开(公告)日：2020-10-06
申请号：US16219436
申请日：2018-12-13
申请人： Cenovus Energy Inc.
发明人： Subodh Gupta
摘要： Methods for preparing, converting, and/or transporting bitumen are provided. Asphaltene prills, prilling processes, and converted bitumen suitable for transport are disclosed. One method for preparing bitumen for transport comprises: separating asphaltene from the bitumen to generate a deasphalted oil and asphaltene; separating the asphaltene into a first asphaltene fraction and a second asphaltene fraction, the first asphaltene fraction being less soluble in deasphalted oil and the second asphaltene fraction being more soluble in deasphalted oil; and forming an asphaltene prill comprising an inner core comprising the second asphaltene fraction and an outer layer comprising the first asphaltene fraction. Asphaltene prills disclosed herein may comprise an inner core comprising an asphaltene fraction having more solubility in deasphalted oil, and an outer layer comprising an asphaltene fraction having less solubility in deasphalted oil. Methods for the transport of bitumen via a pipeline are disclosed.
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公开(公告)号：US09284827B2
公开(公告)日：2016-03-15
申请号：US14283882
申请日：2014-05-21
申请人： Cenovus Energy Inc.
发明人： Christian Canas , Simon Gittins , Subodh Gupta , Arun Sood , Xinjie Wu
IPC分类号： E21B43/24
CPC分类号： E21B43/2408
摘要： A process for hydrocarbon recovery performs a steam assisted gravity drainage (SAGD) operation by injecting steam in a steam injection well of a SAGD well pair and continuing to inject steam to establish fluid communication between the steam injection well and an oxidizing gas injection well that includes an oxidizing gas injection well segment that is spaced generally above the steam injection well segment, and producing hydrocarbons from a hydrocarbon production well of the SAGD well pair, the hydrocarbon production well including a generally horizontal production well segment disposed generally parallel to and vertically below a generally horizontal steam injection well segment of the steam injection well such that the steam injection well segment is disposed generally vertically between the production well segment and the oxidizing gas injection well segment. In response to determining that the steam injected in the steam injection well reaches the oxidizing gas injection well or is near a top of the oil sands reservoir, SAGD is discontinued and oxidizing gas is injected through an injection well. The oxidizing gas supports in situ combustion (ISC) in the reservoir. During ISC, combustion gases are produced through the steam injection well of the steam assisted gravity drainage well pair; and the mobilized hydrocarbons are recovered from the reservoir through the hydrocarbon production well of the steam assisted gravity drainage well pair.
摘要翻译： 烃回收方法通过在SAGD井对的蒸汽注入井中注入蒸汽进行蒸汽辅助重力排放（SAGD）操作，并且继续注入蒸汽以建立蒸汽注入井和氧化气体注入井之间的流体连通，其包括 氧化气体注入井段，其通常位于蒸汽注入井段的上方，并且从SAGD井对的烃生产井中产生碳氢化合物，烃生产井包括大致水平的生产井段，其大致平行于和垂直于 通常是蒸汽注入井的水平蒸汽注入井段，使得蒸汽注入井段大致垂直地布置在生产井段和氧化气体注入井段之间。 响应于确定在蒸汽注入井中注入的蒸汽到达氧化气体注入井或靠近油砂储层的顶部，停止SAGD并且通过注入井注入氧化气体。 氧化气体支持储层中的原位燃烧（ISC）。 在ISC期间，通过蒸汽辅助重力排水井对的蒸汽注入井产生燃烧气体; 并且通过蒸汽辅助重力排水井对的烃生产井从储层回收活动的烃。
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公开(公告)号：US11820945B2
公开(公告)日：2023-11-21
申请号：US17518398
申请日：2021-11-03
申请人： Cenovus Energy Inc.
发明人： Subodh Gupta , Anita , Sarbajit Banerjee , Wasif Zaheer
CPC分类号： C10C3/16 , C08L95/00 , C10G1/00 , C10G2300/4075
摘要： Disclosed herein are methods of preparing bitumen for transport, apparatus for preparing bitumen for transport, methods of transporting bitumen, and transportation-ready forms of bitumen. Instead of relying on exogenous components to induce bitumen solidification, the methods and apparatus of the present disclosure reorganize bituminous materials derived from the same origin into core-shell bitumen microcapsules, such that relatively low solubility components (e.g. asphaltenes) encapsulate relatively high solubility components (e.g. maltenes). Importantly, the bitumen microcapsules of the present disclosure are sufficiently mechanically resilient to meet one or more thresholds for midstream transportation, and they are readily fluidized for downstream processing with conventional technologies. Taken together, these aspects may ameliorate one or more challenges in achieving commercially viable bitumen solidification technologies.
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公开(公告)号：US20190119582A1
公开(公告)日：2019-04-25
申请号：US16219436
申请日：2018-12-13
申请人： Cenovus Energy Inc.
发明人： Subodh Gupta
CPC分类号： C10G55/04 , C10C3/14 , C10G21/003 , F17D1/088
摘要： Methods for preparing, converting, and/or transporting bitumen are provided. Asphaltene prills, prilling processes, and converted bitumen suitable for transport are disclosed. One method for preparing bitumen for transport comprises: separating asphaltene from the bitumen to generate a deasphalted oil and asphaltene; separating the asphaltene into a first asphaltene fraction and a second asphaltene fraction, the first asphaltene fraction being less soluble in deasphalted oil and the second asphaltene fraction being more soluble in deasphalted oil; and forming an asphaltene prill comprising an inner core comprising the second asphaltene fraction and an outer layer comprising the first asphaltene fraction. Asphaltene prills disclosed herein may comprise an inner core comprising an asphaltene fraction having more solubility in deasphalted oil, and an outer layer comprising an asphaltene fraction having less solubility in deasphalted oil. Methods for the transport of bitumen via a pipeline are disclosed.
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公开(公告)号：US10106745B2
公开(公告)日：2018-10-23
申请号：US15334134
申请日：2016-10-25
申请人： Cenovus Energy Inc.
摘要： Methods, processes, and apparatuses for preparing and transporting bitumen. Bitumen may be prilled such that a bitumen product comprising a prill core and a non-stick coating is produced. The non-stick coating may comprise asphaltenes and the prill core may comprise bitumen, deasphalted oil, or both bitumen and deasphalted oil. The resultant non-stick coated prills have reduced adhesion to transportation vessels and other non-stick coated prills at a temperature below an adhesion temperature, facilitating transport.
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公开(公告)号：US11041124B2
公开(公告)日：2021-06-22
申请号：US16135811
申请日：2018-09-19
申请人： Cenovus Energy Inc.
IPC分类号： B01J2/30 , B01J2/04 , B01J2/16 , B01F15/02 , B01F5/20 , B01F13/02 , C10C3/14 , C08L91/00 , C08L95/00 , B01J2/00 , B01F3/08 , B01F13/10
摘要： Methods, processes, and apparatuses for preparing and transporting bitumen. Bitumen may be prilled such that a bitumen product comprising a prill core and a non-stick coating is produced. The non-stick coating may comprise asphaltenes and the prill core may comprise bitumen, deasphalted oil, or both bitumen and deasphalted oil. The resultant non-stick coated prills have reduced adhesion to transportation vessels and other non-stick coated prills at a temperature below an adhesion temperature, facilitating transport.
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公开(公告)号：US20150101794A1
公开(公告)日：2015-04-16
申请号：US14513124
申请日：2014-10-13
申请人： Cenovus Energy Inc.
发明人： Christian Canas , Subodh Gupta , Simon Gittins
CPC分类号： E21B43/38 , E21B43/128 , E21B43/2406
摘要： An apparatus is disclosed for use in a hydrocarbon production well that includes a casing extending from a segment of the production well to a wellhead. A production conduit extends inside the casing, from a first end in the hydrocarbon production well to a second end at the wellhead. A receptacle includes a bottom spaced from the first end of the production conduit and at least one sidewall extending around a portion of the production conduit proximal the first end such that the receptacle extends around the first end of the production conduit. The receptacle includes an opening for liquid to pass into the receptacle to separate liquids from gases. A submersible pump is disposed in the production well and includes a motor outside the receptacle and coupled to a pump body inside the receptacle to pump the liquid from a pump inlet in the receptacle, through the production conduit to the second end.
摘要翻译： 公开了一种用于烃生产井的装置，其包括从生产井的一段延伸到井口的壳体。 生产导管在套管内延伸，从烃生产井的第一端到井口的第二端。 容器包括与生产管道的第一端部间隔开的底部，以及至少一个围绕生产管道的靠近第一端部的部分延伸的侧壁，使得容器围绕生产管道的第一端部延伸。 容器包括用于液体进入容器以将气体与气体分离的开口。 潜水泵设置在生产井中，并且包括在容器外部的电动机，并且连接到容器内部的泵体，以将液体从容器中的泵入口泵送通过生产管道到达第二端。
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公开(公告)号：US10190062B2
公开(公告)日：2019-01-29
申请号：US15199122
申请日：2016-06-30
申请人： Cenovus Energy Inc.
发明人： Subodh Gupta
摘要： Methods for preparing, converting, and/or transporting bitumen are provided. Asphaltene prills, prilling processes, and converted bitumen suitable for transport are disclosed. One method for preparing bitumen for transport comprises: separating asphaltene from the bitumen to generate a deasphalted oil and asphaltene; separating the asphaltene into a first asphaltene fraction and a second asphaltene fraction, the first asphaltene fraction being less soluble in deasphalted oil and the second asphaltene fraction being more soluble in deasphalted oil; and forming an asphaltene prill comprising an inner core comprising the second asphaltene fraction and an outer layer comprising the first asphaltene fraction. Asphaltene prills disclosed herein may comprise an inner core comprising an asphaltene fraction having more solubility in deasphalted oil, and an outer layer comprising an asphaltene fraction having less solubility in deasphalted oil. Methods for the transport of bitumen via a pipeline are disclosed.
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公开(公告)号：US20170002275A1
公开(公告)日：2017-01-05
申请号：US15199122
申请日：2016-06-30
申请人： Cenovus Energy Inc.
发明人： Subodh Gupta
CPC分类号： C10G55/04 , C10C3/14 , C10G21/003 , F17D1/088
摘要： Methods for preparing, converting, and/or transporting bitumen are provided. Asphaltene prills, prilling processes, and converted bitumen suitable for transport are disclosed. One method for preparing bitumen for transport comprises: separating asphaltene from the bitumen to generate a deasphalted oil and asphaltene; separating the asphaltene into a first asphaltene fraction and a second asphaltene fraction, the first asphaltene fraction being less soluble in deasphalted oil and the second asphaltene fraction being more soluble in deasphalted oil; and forming an asphaltene prill comprising an inner core comprising the second asphaltene fraction and an outer layer comprising the first asphaltene fraction. Asphaltene prills disclosed herein may comprise an inner core comprising an asphaltene fraction having more solubility in deasphalted oil, and an outer layer comprising an asphaltene fraction having less solubility in deasphalted oil. Methods for the transport of bitumen via a pipeline are disclosed.
摘要翻译： 提供了制备，转化和/或运输沥青的方法。 公开了沥青质颗粒，造粒方法和适于运输的转化沥青。 用于制备运输沥青的一种方法包括：从沥青中分离沥青质以产生脱沥青油和沥青质; 将沥青质分离成第一沥青质馏分和第二沥青质馏分，第一沥青质馏分较不溶于脱沥青油，第二沥青质馏分更溶于脱沥青油; 以及形成沥青质颗粒，其包含包含所述第二沥青质部分的内芯和包含所述第一沥青质部分的外层。 本文公开的沥青质颗粒可以包含内芯，其包含在脱沥青油中具有更高溶解度的沥青质馏分，以及包含在脱沥青油中具有较低溶解度的沥青质馏分的外层。 公开了通过管道输送沥青的方法。
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公开(公告)号：US20150308246A1
公开(公告)日：2015-10-29
申请号：US14698679
申请日：2015-04-28
申请人： Cenovus Energy Inc.
发明人： Sam Chen , Subodh Gupta , Alvin Winestock
CPC分类号： E21B43/2406
摘要： A process for hydrocarbon recovery from a hydrocarbon-bearing formation utilizing an injection well for the injection of a mobilizing and displacing fluid, such as steam, into the formation and a production well, spaced from the injection well, and through which hydrocarbon is recovered. The process includes injecting a surfactant and a gas into the production well for a first period of time to thereby emplace or form foam to an extent sufficient to modify the path of flow in an inter-well region between the injection well and the production well and in an area spaced from the inter-well region of the reservoir, which area is in fluid communication with at least one of the injection well and the production well. The process also includes injecting fluid into the injection well to cause the flow of hydrocarbon in the formation and recovering the hydrocarbon through the production well.
摘要翻译： 使用注入井的烃类回收烃的方法，该注入井用于将注入井注入地层中的移动和置换流体（例如蒸汽）和与注入井间隔开的生产井，以及回收烃。 该方法包括将表面活性剂和气体注入生产井中第一时间段，从而将泡沫置于或形成足够的程度以改变在注入井和生产井之间的井间区域中的流动路径， 在与储存器的井间区域间隔开的区域中，该区域与注入井和生产井中的至少一个流体连通。 该方法还包括将注入流体注射到注入井中以使烃在地层中流动并通过生产井回收碳氢化合物。
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