公开(公告)号：US11078768B2

公开(公告)日：2021-08-03

申请号：US16605068

申请日：2019-04-04

Applicant: CHINA UNIVERSITY OF PETROLEUM

Inventor： Teng Lu ,  Zhaomin Li ,  Jianping Yang ,  Hongyuan Wang ,  Shizhong Wang ,  Yao Wei ,  Zhuangzhuang Wang ,  Dawei Hou ,  Yajie Xu

IPC: E21B43/24 ,  E21B43/30 ,  E21B43/16

Abstract: Disclosed belongs to the technical field of oil and gas field development engineering, and particularly relates to a super heavy oil development method for strengthening an SAGD steam chamber to break through a low physical property reservoir. The super heavy oil development method for strengthening the SAGD steam chamber to break through the low physical property reservoir includes the following steps: (1) selection of a developed oil reservoir; (2) well distribution; (3) steam chamber forming; (4) steam chamber expansion; (5) steam chamber strengthening. The method may enhance the ability of the steam chamber to break through the low physical property reservoir, enlarge the development height of the steam chamber, and further improve the SAGD development effect of super heavy oil.

公开(公告)号：US11187065B2

公开(公告)日：2021-11-30

申请号：US16472827

申请日：2019-01-15

Applicant: CHINA UNIVERSITY OF PETROLEUM

Inventor： Teng Lu ,  Zhaomin Li ,  Jian Li ,  Dingyong Zhang ,  Dawei Hou ,  Binfei Li

IPC: E21B43/16

Abstract: A composite nitrogen huff and puff method for a bounded fault block reservoir comprises: selecting the reservoir to be developed, wherein the reservoir to which the development method is applicable is roughly screened according to the following conditions: the reservoir is a bounded fault block reservoir, buried depth 0.5, reservoir thickness>10 m, horizontal permeability>100 mD, vertical permeability to horizontal permeability ratio>0.35, reservoir porosity>0.20, and stratigraphic dip>8°; and sequentially performing the following huff and puff phases: a nitrogen huff and puff phase, a nitrogen and water composite huff and puff phase, a nitrogen and foaming agent composite huff and puff phase, and a nitrogen and carbon dioxide composite huff and puff phase.