Simulation of edge water invasion mitigation of the SAGD chamber by low temperature oxidation (LTO) coking air injection and optimization of operating parameters

Huang，Ke1,2; Huang，Siyuan1; Jiang，Qi1,2; Gates，Ian D.2; Fan，Dian3; Zhao，Hongyu4; Wang，Hongyuan5; Wang，Guodong5

2024-12-01

10.1016/j.geoen.2024.213351

Geoenergy Science and Engineering   影响因子和分区

2949-8910

During the long-term use of steam assisted gravity drainage (SAGD) in oil fields, the continuous expansion of the steam chamber often leads to edge water invasion, which significantly reduces thermal efficiency and oil production rate. To address this challenge, we hypothesize that a low temperature oxidation (LTO) coke formation air injection method may alleviate edge water invasion. To test our hypothesis, we developed a numerical SAGD model tailored to a typical SAGD field, the Guantao Du84 block in the Liaohe Oilfield, China. The model incorporates a four-step coke generation kinetics and considers the complexity of coke distribution. Our results reveal that coke generation (1) shifts the direction of edge water flow from the steam chamber to a vertical downward direction, (2) causes pore clogging, resulting in reduced flow velocity, (3) leads to reduced porosity and water cut, significantly improving oil recovery as compared to nitrogen injection (e.g., by 18.2% in the Guantao Du84 block), and (4) allows for proactive establishment of coke zones before the water cut reaches 85%. Through this numerical study, we investigate the feasibility of implementing the method of LTO coking air injection in SAGD fields and provide insights into its optimization.

EOR Heavy oil In-situ water management Low temperature oxidation Parameter optimization Water invasion

英语

其他

2-s2.0-85204887071

Scopus

1.State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University,China
2.Department of Chemical and Petroleum Engineering,Schulich School of Engineering,University of Calgary,Canada
3.School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,China
4.School of Civil and Resource Engineering,University of Science & Technology Beijing,China
5.Liaohe Oilfield Company,China National Petroleum Corporation,China

Huang，Ke,Huang，Siyuan,Jiang，Qi,et al. Simulation of edge water invasion mitigation of the SAGD chamber by low temperature oxidation (LTO) coking air injection and optimization of operating parameters[J]. Geoenergy Science and Engineering,2024,243.

Huang，Ke.,Huang，Siyuan.,Jiang，Qi.,Gates，Ian D..,Fan，Dian.,...&Wang，Guodong.(2024).Simulation of edge water invasion mitigation of the SAGD chamber by low temperature oxidation (LTO) coking air injection and optimization of operating parameters.Geoenergy Science and Engineering,243.

Huang，Ke,et al."Simulation of edge water invasion mitigation of the SAGD chamber by low temperature oxidation (LTO) coking air injection and optimization of operating parameters".Geoenergy Science and Engineering 243(2024).