公开(公告)号：US20130168094A1

公开(公告)日：2013-07-04

申请号：US13717894

申请日：2012-12-18

Applicant: CONOCOPHILLIPS COMPANY

Inventor： Frank Michael Bayles

IPC: E21B43/24

CPC classification number: E21B43/2408 ,  C10G1/047 ,  C10G11/16 ,  C10G2300/1033 ,  C10G2300/4037 ,  C10G2300/4056

Abstract: Methods for recovery of heavy oils use selective catalytic downhole upgrading with SAGD technology. Certain embodiments include extracting heavy oil using a SAGD process and upgrading the heavy oil in a production well with a cracking catalyst. The cracking catalyst is introduced into the production well, allowing the extracted hydrocarbons to interface with the cracking catalyst to upgrade the hydrocarbons. The upgraded hydrocarbons are then separated from the cracking catalyst. This upgraded stream has a lower molecular weight, significantly reducing the viscosity of the produced hydrocarbons. A gasifier is provided to gasify a portion of the slurry containing unconverted heavy oil and cracking catalyst to produce syngas. The syngas may then be used to produce steam for use in the SAGD extraction process, improving energy efficiency of the process. Further, formation catalyst losses are avoided as the catalyst injected into the well is recovered and available for reuse.

Abstract translation: 重油的回收方法采用SAGD技术的选择性催化井下升级。 某些实施方案包括使用SAGD方法提取重油，并用裂化催化剂升级生产井中的重质油。 将裂解催化剂引入生产井中，使提取的烃与裂化催化剂相接触以提高烃类。 然后将升级的烃与裂化催化剂分离。 该升级的流具有较低的分子量，显着降低生成的烃的粘度。 提供气化器以气化包含未转化的重油和裂化催化剂的浆料的一部分以产生合成气。 然后可以使用合成气来生产用于SAGD萃取过程的蒸汽，从而提高该方法的能量效率。 此外，由于注入井中的催化剂被回收并可再利用，所以避免了地层催化剂损失。