Whole process analysis of geothermal exploitation and power generation from a depleted high-temperature gas reservoir by recycling CO2

Cui, Guodong; Pei, Shufeng; Rui, Zhenhua; Dou, Bin; Ning, Fulong; Wang, Jiaqiang

doi:10.1016/j.energy.2020.119340

Cited by 79 publications

(20 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Direct use of CO 2 as working fluid allows reaching much higher power. The idea of the study described in [16] is a bit like the suggested case, but not the same. The concept of a reservoir is different, but the technology of energy production is similar.…”

Section: Introductionmentioning

confidence: 97%

See 1 more Smart Citation

Multi-Criteria Studies and Assessment Supporting the Selection of Locations and Technologies Used in CO2-EGS Systems

et al. 2021

View full text Add to dashboard Cite

The paper describes application of the cross-impact method in the process of selecting locations and technologies used in a geothermal system based on energy accumulated in a dry rock formation, where CO2 is used as the working medium. The survey is based on the opinion of a group of 20 experts representing different fields of earth and technical sciences. They represent Norway and Poland, where the location of such a system is considered. Based on experts’ experience and opinions, all factors that seem to be significant were classified into the following groups: targets, key factors, results, determiners, motor and brakes, regulating factors, external factors, auxiliary factors, and autonomous factors. Direct influences between variables were indicated. Due to major differences in geological conditions in Poland and Norway, the factor of on- or offshore technology was pointed out as the primary determiner. Among key factors, the system operation’s long-term safety and level of technological readiness were indicated. As a target factor, an interest of local authority was pointed out. Among the variables that are important when selecting locations for this type of system, nine are essential: (1) Formal constraints related to local nature protection areas—this variable is essential in the case of an onshore system; (2) Availability of CO2 sources; (3) Level of geological recognition; (4) The distance of the CO2-EGS from a thermal energy user and electricity grid; (5) Existing wells and other infrastructure; (6) Depth of the EGS system; (7) Water depth if offshore, this variable is only important when offshore systems are involved; (8) Physical parameters of reservoir rocks; (9) Reservoir temperature.

show abstract

Section: Introductionmentioning

confidence: 97%

“…The total cost of energy obtained based on a high-temperature depleted gas reservoir by recycling CO 2 is estimated by Cui et al in [16]. Depending on a surface installation scheme, the cost is estimated at 0.1 USD/kWh when a turbine is driven directly by CO 2 and 0.45 USD/kWh when the Organic Rankine Cycle is used.…”

Section: Introductionmentioning

confidence: 99%

Multi-Criteria Studies and Assessment Supporting the Selection of Locations and Technologies Used in CO2-EGS Systems

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The simulation results show that NPV is increased by injecting carbon dioxide, which is of great significance for economic benefit and carbon dioxide emission reduction, it is observed that more and more researches are focusing on the importance of carbon dioxide to EOR. Furthermore, carbon dioxide has higher solubility in oil, which caused to decrease the viscosity dramatically and subsequently increase the volume of produced oil at higher temperature and pressure (Cui et al, 2021;Davarpanah and Mirshekari, 2020), which also can maintain internal pressure and improve the fluidity of crude oil (Law, 2004). Wang et al (2020) found that increasing the amount of dissolved CO 2 gas resulted in the interfacial tension between oil and water decreased with the increase of the system pressure by using the high temperature and high-pressure interfacial tensiometer.…”

Section: Introductionmentioning

confidence: 99%

3D experimental investigation on enhanced oil recovery by flue gas assisted steam assisted gravity drainage

Tao

Yuan

Huang

et al. 2021

Energy Exploration & Exploitation

View full text Add to dashboard Cite

Flue gas assisted steam assisted gravity drainage (SAGD) is a frontier technology to enhance oil recovery for heavy oil reservoirs. The carbon dioxide generated from the thermal recovery of heavy oil can be utilized and consumed to mitigate climate warming for the world. However, most studies are limited to merely use numerical simulation or small physical simulation device and hardly focus on large scale three-dimensions experiment, which cannot fully investigate the enhanced oil recovery (EOR) mechanism of flue gas assisted SAGD, thus the effect of flue gas on SAGD production performance is still not very clear. In this paper, large-scaled and high temperature and pressure resistant 3D physical simulation experiment was conducted, where simulated the real reservoir to a maximum extent, and systematically explored the EOR mechanisms of the flue gas assisted SAGD. Furthermore, the differences between the steam huff and puff, SAGD and flue gas assisted SAGD are discussed. The experimental result showed that the production effect of SAGD was improved by injecting flue gas, with the oil recovery was increased by 5.7%. With the help of thermocouple temperature measuring sensors, changes of temperature field display that flue gas can promote lateral re-development of the steam chamber, and the degree of reservoir exploitation around the horizontal wells has been increased particularly. What’s more, the addition of flue gas further increased the content of light components and decreased the content of heavy by comparing the content of heavy oil components produced in different production times.

show abstract

“…With the increase of exploration extent for oil and gas reservoirs in China, it is difficult to find the large amount of conventional oil and gas reservoirs, and more unconventional oil and gas reservoirs are needed. It is essential to develop the unconventional oil and gas reservoirs efficiently, which is the basis of assuring the safety of energy supply [1,2]. The marine shale gas resource in Southern China is extremely abundant, which is mainly stored in the Ordovician Wufeng-Silurian Longmaxi formation and Cambrian Qiongzhusi formation.…”

Section: Introductionmentioning

confidence: 99%

Classification and Evaluation on Shale Gas Reservoir for Wufeng-Longmaxi Formation in Chuannan Area, Sichuan Basin

Guo

Cai

et al. 2021

Lithosphere

View full text Add to dashboard Cite

Based on the comprehensive statistic and analysis on some representative geological and physical data, the classification criteria on net pay for shale gas reservoir of the Wufeng-Longmaxi formation in Shunan area, Sichuan Basin, are proposed, which include porosity (φ), gas saturation (Sg), density of rock (DEN), brittleness index (BI), and gas content (Vt). When the porosity, gas saturation, brittleness index, and gas content are larger than 3%, 30%, 40%, and 1 m3/t, respectively, and the density of rock is lower than 2.7 g/cm3, then this formation can be seen as the net pay. The application of two key parameters, gas content and brittleness index, could reflect the reservoir resource basis and fracability, respectively. The gas content has a positive correlation with porosity and total organic volume, and the brittleness index has a positive correlation with siliceous and carbonate content. According to the range of these two parameters, the net pay can be classified into three types. For type I, the gas content and brittleness index are larger than 4 m3/t and 50%, respectively. For type II, either the gas content or the brittleness index is lower than 4 m3/t and 50%. For type III, the gas content should be larger than 1 m3/t and lower than 4 m3/t, and the brittleness index is between 40% and 50%. The field application case indicates that the Wufeng formation and low member of the Longmaxi formation have good quality and mainly consist of type I and II formations. In addition, it is found that there is a positive correlation between the penetration ratio for type I formation and the testing production and estimate ultimate recovery (EUR). While this ratio is larger than 50%, the testing production rate and EUR will be over 15×104 m3/d and 8000×104 m3 with a probability of 92%, which meet the requirement of exploitation with reasonable economic benefits.

show abstract

Whole process analysis of geothermal exploitation and power generation from a depleted high-temperature gas reservoir by recycling CO2

Cited by 79 publications

References 33 publications

Multi-Criteria Studies and Assessment Supporting the Selection of Locations and Technologies Used in CO2-EGS Systems

Multi-Criteria Studies and Assessment Supporting the Selection of Locations and Technologies Used in CO2-EGS Systems

3D experimental investigation on enhanced oil recovery by flue gas assisted steam assisted gravity drainage

Classification and Evaluation on Shale Gas Reservoir for Wufeng-Longmaxi Formation in Chuannan Area, Sichuan Basin

Contact Info

Product

Resources

About