公开(公告)号：US20140246196A1

公开(公告)日：2014-09-04

申请号：US14185411

申请日：2014-02-20

Applicant: CONOCOPHILLIPS COMPANY

Inventor： David William LARKIN ,  James P. SEABA

IPC: E21B43/24 ,  E21B36/00

CPC classification number: E21B43/2406 ,  E21B36/005 ,  F22B1/22 ,  F22B27/00

Abstract: Methods and systems generate steam for thermal oil recovery, such as a steam assisted gravity drainage (SAGD) operation. Feedwater is first pressurized to a pressure above that desired for steam injection in the SAGD operation before being heated to avoid at least some nucleate boiling. After being throttled, the local boiling regime is beyond the nucleate boiling regime due to the local pressure drop and the enhanced mixing caused by the throttling process. Two-phase liquid may continue through the boiler generating higher quality steam.

Abstract translation: 方法和系统产生用于热油回收的蒸汽，例如蒸汽辅助重力排水（SAGD）操作。 在加热之前，给水首先被加压到高于SAGD操作中蒸汽注入所需的压力，以避免至少一些核沸腾。 节流后，由于局部压降和由节流过程引起的混合增强，局部沸腾状态超出了核沸腾状态。 两相液体可能继续通过锅炉产生更高质量的蒸汽。

公开(公告)号：US20140230756A1

公开(公告)日：2014-08-21

申请号：US14183065

申请日：2014-02-18

Applicant: CONOCOPHILLIPS COMPANY

Inventor： Babajide KOLADE ,  James P. SEABA ,  Edward G. LATIMER

IPC: F22D11/00 ,  F22B37/48 ,  F22D7/04

CPC classification number: F22D11/006 ,  F22B37/486 ,  F22D7/04

Abstract: Methods and systems relate to generating steam from water that may be recycled in thermal oil recovery processes and is heated in tubes having non-obtrusive features to limit fouling formation. The tubes may include jets to generate enhanced flow mixing along an inner wall of the tubes in order to increase heat transfer and disrupt bubble nucleation. Employing the tubes with the inner wall having an average surface roughness of less than one micron may further facilitate disruption of the bubble nucleation.

Abstract translation: 方法和系统涉及从热水回收过程中再循环的水产生蒸汽，并在具有非突出特征的管中加热以限制结垢形成。 管可以包括射流以沿着管的内壁产生增强的流动混合，以便增加热传递并破坏气泡成核。 使用具有小于1微米的平均表面粗糙度的内壁的管可进一步促进气泡成核的破坏。