公开(公告)号：US20140102700A1

公开(公告)日：2014-04-17

申请号：US14054106

申请日：2013-10-15

Applicant: CONOCOPHILLIPS COMPANY

Inventor： Daniel R. SULTENFUSS ,  Chris LEHECKA

IPC: E21B43/24

CPC classification number: E21B43/2401 ,  E21B43/2408

Abstract: Methods are provided for mitigating thief zone losses during hydrocarbon recovery by thief zone pressure maintenance through downhole radio frequency (RF) radiation heating. A thief zone situated near a hydrocarbon reservoir poses a risk of losing valuable components from the reservoir to the thief zone. In addition to the risk of loss of diluent, heat, or steam to the thief zone, valuable hydrocarbons may also be lost to the thief zone. One way to mitigate these losses is by maintaining thief zone pressure. RF radiation may be used to heat a thief zone fluid to maintain pressure in the thief zone, decreasing the driving force for losses to the thief zone. In some cases, steam generated thusly may be used to enhance hydrocarbon thermal recovery. Advantages of methods herein include: lower costs, higher efficiencies, higher hydrocarbon recovery, less hydrocarbon contamination, increased hydrocarbon mobility, and fewer thief zone losses.

Abstract translation: 提供了通过井下射频（RF）辐射加热通过小偷区域压力维持来减轻碳氢化合物回收期间的小偷区域损失的方法。 位于碳氢化合物储层附近的小偷区域有可能将有价值的组分从储存器丢到小偷区域。 除了将稀释剂，热量或蒸汽丢失到小偷区域的风险外，有价值的碳氢化合物也可能丢失到小偷区域。 减轻这些损失的一种方法是维持小偷区的压力。 RF辐射可以用于加热小偷区域流体以保持小偷区域中的压力，从而降低对小偷区域的损失的驱动力。 在某些情况下，由此生成的蒸汽可用于提高烃热回收率。 本文方法的优点包括：降低成本，更高效率，更高的烃回收率，更少的碳氢化合物污染，增加的碳氢化合物流动性和更少的小偷区损失。

公开(公告)号：US20140311739A1

公开(公告)日：2014-10-23

申请号：US14255033

申请日：2014-04-17

Applicant: CONOCOPHILLIPS COMPANY

Inventor： Wendell Peter MENARD ,  David Andrew BROWN ,  Chris LEHECKA

IPC: E21B43/24

CPC classification number: E21B43/2408 ,  E21B36/04

Abstract: Heavy oil recovery using downhole radio frequency radiation heating accelerates SAGD thermal recovery processes. In one embodiment, one or more SAGD well pairs traverse a subterranean formation for recovering heavy oil. The SAGD well pairs each create a steam chamber which, over time, expands to allow each steam chamber to interact with one another and in this way, increases the recovery heavy oil from the formation. One or more antennas may be interposed between the steam chambers to introduce electromagnetic radiation into the formation to heat the fluids therein to accelerate expansion of the steam chambers, particularly where antennas are judiciously situated to optimize steam chamber expansion. Where an infill production well is present, the antennas may be situated to accelerate steam chamber communication with the infill production well. Advantages include lower cost, higher efficiencies, quicker and increased hydrocarbon recovery.

Abstract translation: 使用井下射频辐射加热的重油回收加速了SAGD热回收过程。 在一个实施例中，一个或多个SAGD井对横穿地层以回收重油。 SAGD井对每个都产生蒸汽室，随着时间的推移，蒸汽室膨胀以允许每个蒸汽室彼此相互作用，并且以这种方式增加从地层中回收的重油。 一个或多个天线可以插入在蒸汽室之间以将电磁辐射引入到地层中以加热其中的流体，以加速蒸汽室的膨胀，特别是在明智地定位天线以优化蒸汽室膨胀的地方。 如果存在填充生产井，天线可以位于加速与填充生产井的蒸汽室通信。 优点包括降低成本，提高效率，加快碳氢化合物回收率。