Gravity drainage startup using RF and solvent
    1.
    发明授权
    Gravity drainage startup using RF and solvent 有权
    使用射频和溶剂的重力引流启动

    公开(公告)号:US08978755B2

    公开(公告)日:2015-03-17

    申请号:US13231781

    申请日:2011-09-13

    IPC分类号: E21B43/24 E21B43/30

    CPC分类号: E21B43/2408

    摘要: The method begins by forming a gravity drainage production well pair within a formation comprising an injection well and a production well. The pre-soaking stage begins by soaking at least one of the wellbores of the well pair with a solvent, wherein the solvent does not include water. The pre-heating stage begins by heating the soaked wellbore of the well pair to produce a vapor. The squeezing stage begins by introducing the vapor into the soaked wellbore of the well pair, and can thus overlap with the pre-heating stage. The gravity drainage production begins after the squeezing stage, once the wells are in thermal communication and the heavy oil can drain to the lower well.

    摘要翻译: 该方法开始于在包括注入井和生产井的地层内形成重力排水生产井对。 预浸泡阶段通过用溶剂浸泡井对中的至少一个井筒开始,其中溶剂不包括水。 预热阶段通过加热井对的浸透的井眼来产生蒸汽开始。 挤压阶段通过将蒸汽引入井对的浸泡井筒中开始,并且因此可以与预热阶段重叠。 重力排水产生在挤压阶段开始,一旦油井进行热交换,重油可以排入下井。

    Draining a reservoir with an interbedded layer
    6.
    发明授权
    Draining a reservoir with an interbedded layer 有权
    排出具有层间层的水库

    公开(公告)号:US08240381B2

    公开(公告)日:2012-08-14

    申请号:US12708832

    申请日:2010-02-19

    IPC分类号: E21B43/24

    CPC分类号: E21B43/2406 E21B43/14

    摘要: Methods and systems relate to recovering hydrocarbons from within formations in which hydrocarbon bearing reservoirs are separated from one another by a fluid flow obstructing natural stratum. Relative to the reservoirs, the stratum inhibits or blocks vertical fluid flow within the formation. Drilled bores arranged to intersect the stratum provide an array of fluid flow paths through the stratum. Fluid communication established by the drilled bores enables production utilizing a producer borehole deviated from vertical and processes that rely on techniques such as gravity drainage through the fluid flow paths and/or injection through the fluid flow paths.

    摘要翻译: 方法和系统涉及通过阻塞天然层的流体流从其中含烃储层彼此分离的地层中回收碳氢化合物。 相对于水库,地层可以抑制或阻挡地层内的垂直流体流动。 布置成与层相交的钻孔提供穿过层的流体流动路径的阵列。 由钻孔建立的流体通信使得能够利用偏离垂直的生产井眼和依靠诸如通过流体流动路径的重力排水和/或通过流体流动路径注入的技术的过程进行生产。

    Producer well lugging for in situ combustion processes
    7.
    发明授权
    Producer well lugging for in situ combustion processes 有权
    生产井适用于原位燃烧过程

    公开(公告)号:US07793720B2

    公开(公告)日:2010-09-14

    申请号:US12328344

    申请日:2008-12-04

    IPC分类号: E21B43/243

    CPC分类号: E21B43/243

    摘要: Methods and apparatus relate to controlling location of inflow into a production well during in situ combustion. The production well includes intervals closable to the inflow at identified times. Once a combustion front from the in situ combustion passes one of the intervals, a blockage conveyed from surface into the production well forms a barrier to the inflow at the interval that has been passed by the combustion front. An example of the blockage includes a cement plug delivered through coiled tubing into the production well, which may include production tubing that defines the intervals based on at least two consecutive alternating lengths of solid wall sections and slotted or perforated sections of the production tubing.

    摘要翻译: 方法和装置涉及在现场燃烧期间控制流入生产井的位置。 生产井包括在确定的时间可以流入的间隔。 一旦来自原位燃烧的燃烧前沿通过其中一个间隔,则从表面传送到生产井中的堵塞在以燃烧前沿通过的间隔处形成对流入物的阻挡。 堵塞的示例包括通过连续油管输送到生产井中的水泥塞,其可以包括限定基于至少两个连续交替长度的实心壁段和生产管的开槽或穿孔部分的间隔的生产管。

    Enhanced bitumen recovery using high permeability pathways
    8.
    发明授权
    Enhanced bitumen recovery using high permeability pathways 有权
    使用高渗透性途径增强沥青回收率

    公开(公告)号:US08967282B2

    公开(公告)日:2015-03-03

    申请号:US13046149

    申请日:2011-03-11

    IPC分类号: E21B43/27 E21B43/30

    CPC分类号: E21B43/305

    摘要: Heavy oil recovery from oil sand reservoirs is enhanced through the creation of subsurface high permeability pathways distributed throughout the oil sand reservoirs. The high permeability pathways may be boreholes that extend through the oil sand reservoir. A portion of the high permeability pathway may be packed with high permeability particulate to provide structural support and allow for high permeability throughout the boreholes. After establishing the high permeability pathways throughout the oil sand reservoir, solvent may be introduced into the oil sand reservoir. The solvent has the beneficial effect of lowering the viscosity of the heavy oil, which aids in the extraction of the heavy oil. Thermal recovery processes and other enhancements may be combined with these methods to aid in reducing the viscosity of the heavy oil. Advantages of these methods include, accelerated hydrocarbon recovery, higher production efficiencies, lower costs, and lower extraction times.

    摘要翻译: 通过分布在整个油砂储层的地下高渗透路径的形成,提高了油砂储层的重油回收率。 高渗透性通道可以是延伸穿过油砂储层的钻孔。 高渗透性通道的一部分可以用高渗透性颗粒填充以提供结构支撑并允许贯穿整个钻孔的高渗透性。 在整个油砂储层建立高渗透通道后,可将溶剂引入油砂储层。 溶剂具有降低重油粘度的有益效果,有助于重油的萃取。 热回收方法和其他增强可以与这些方法组合以帮助降低重油的粘度。 这些方法的优点包括加速烃回收,更高的生产效率,更低的成本和更低的萃取时间。

    In situ combustion as adjacent formation heat source
    9.
    发明授权
    In situ combustion as adjacent formation heat source 有权
    原位燃烧作为相邻地层热源

    公开(公告)号:US07909093B2

    公开(公告)日:2011-03-22

    申请号:US12354270

    申请日:2009-01-15

    IPC分类号: E21B43/243 E21B43/30

    CPC分类号: E21B43/24

    摘要: Methods and apparatus relate to in situ combustion. Configurations of injection and production wells facilitate the in situ combustion. A first production well disposed in a first oil bearing reservoir is spaced from a second production well disposed in a second oil bearing reservoir separated from the first oil bearing reservoir by a stratum having lower permeability than the first and second oil bearing reservoirs. The stratum isolates one of the first and second production wells from one of the first and second oil bearing reservoirs. In situ combustion through the first oil bearing reservoir generates heat that irradiates into the second oil bearing reservoir to enable producing hydrocarbon with the second production well.

    摘要翻译: 方法和装置与原位燃烧有关。 注射和生产井的结构有助于原位燃烧。 设置在第一含油储存器中的第一生产井与设置在第二承载油箱中的第二生产井间隔开,所述第二生产井与第一储油容器分隔开,其具有比第一和第二储油容器低的渗透性层。 地层将第一和第二生产井中的一个从第一和第二含油气藏中的一个分离。 通过第一个含油气藏的原位燃烧会产生照射到第二个含油气藏的热量,以使第二个生产井能够生产碳氢化合物。