METHOD FOR DETERMINING OXIDATION LEADING EDGE IN MEDIUM-TEMPERATURE-GAS STREAM DRIVE OIL RECOVERY

WIPO Patent Application WO/2023/123969

A1

Provided is a method for determining an oxidation leading edge in medium-temperature-gas steam drive oil recovery, the method comprising: utilizing a marker method wherein a marker is aldehyde ketone ether; detecting the concentration of aldehyde ketone ether in a gas and/or liquid produced in a medium-temperature-gas steam drive oil recovery wellhead, and using said concentration for determining an oxidation mode of an oxidation leading edge in a reservoir corresponding to the position of a sampling well. The use of an aldehyde ketone ether marker method for monitoring a negative temperature coefficient oxidation process is proposed for the first time, and allows for rapidly and accurately judging the advancement of an oxidation leading edge in a reservoir, and provides a basis for adjusting operating conditions. Moreover, the marker method is combined with a temperature and pressure method so as to determine an oxidation mode in a reservoir near the position of the sampling well, so as to monitor the entire process of an oxidation reaction.

JPS59145029	CATIONIC HIGH MOLECULAR SURFACTANT
WO/2014/120437	MOBILITY CONTROL POLYMERS FOR ENHANCED OIL RECOVERY

HUANG WEIQIANG (CN)
ZHANG XIA (CN)
ZHENG AIPING (CN)
CHEN HONGFEI (CN)
MENG YANCHONG (CN)
LIU QIANG (CN)
FENG HAIJIAO (CN)
HUANG HOUCHUAN (CN)

PCT/CN2022/102887

July 06, 2023

June 30, 2022

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PETROCHINA CO LTD (CN)

E21B43/22; E21B43/24; E21B47/00; E21B49/00

CN104612666A	2015-05-13
CN112502680A	2021-03-16
CN105019889A	2015-11-04
US5488990A	1996-02-06

RUNPING & PARTNERS (CN)

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