Microscopic Experiments to Assess the Macroscopic Sweep Characteristics of Carbon Dioxide Flooding DOI Creative Commons
Rujun Wang,

Wei Zhou,

Yongliang Tang

et al.

Applied Sciences, Journal Year: 2024, Volume and Issue: 14(19), P. 9007 - 9007

Published: Oct. 6, 2024

The Lunnan oilfield in the Tarim Basin, one of China’s major onshore oilfields with substantial geological reserves, faces particular challenges due to complexity its reservoir environment and dispersion remaining oil. Carbon dioxide, a greenhouse gas, presents an opportunity for enhanced oil recovery (EOR) storage. In this context, use carbon dioxide EOR can simultaneously address environmental concerns improve rates. This study focuses on TI No. 2 well area oilfield, employing advanced techniques analyze micro- macro-characteristics flooding. Results: From microscopic point view, flooding is mainly miscible crude oil, which has strong component exchange effect be displaced form full pores, displacement efficiency close 100%. Macroscopically, under combined injection production different injected hydrocarbon pore volume multiples (HCPVs), it at upper lower layers interlayer produced far away from layer interlayer, total rate 52.83%. With increase HCPV, increased rapidly first then slowly, HCPV demarcation was 0.5, while wave-like manner decreased rapidly, breakthrough gas 0.5. However, when are same time, reach 83.02%. increases turning 6.52. manner, decreases rises slowly manner. 0.63, injection–production transition 0.63. 88.68% condition separate multiples. slowly. 6.5, 6.5. research results provide data support physical reality macroscopic sweep characteristics Basin.

Language: Английский

Gas channeling control with CO2-responsive gel system in fractured low-permeability reservoirs: Enhancing oil recovery during CO2 flooding DOI
Xin Yan, Binfei Li, Zhaomin Li

et al.

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 353, P. 128475 - 128475

Published: June 21, 2024

Language: Английский

Citations

12
Chemical-Assisted CO2 Water-Alternating-Gas Injection for Enhanced Sweep Efficiency in CO2-EOR DOI Creative Commons

Pengwei Fang,

Qun Zhang,

Can Zhou

et al.

Molecules, Journal Year: 2024, Volume and Issue: 29(16), P. 3978 - 3978

Published: Aug. 22, 2024

CO2-enhanced oil recovery (CO2-EOR) is a crucial method for CO2 utilization and sequestration, representing an important zero-carbon or even negative-carbon emission reduction technology. However, the low viscosity of reservoir heterogeneity often result in early gas breakthrough, significantly reducing sequestration efficiency. A water-alternating-gas (WAG) injection technique mitigating breakthrough viscous fingering CO2-EOR. it encounters challenges related to insufficient mobility control highly heterogeneous fractured reservoirs, resulting channeling sweep Despite extensive application research WAG most recent comprehensive review dates back 2018, which focuses on mechanisms EOR using conventional WAG. Herein, we give updated incorporate latest advancements CO2-WAG flooding techniques enhanced efficiency, includes theory, applications, fluid displacement mechanisms, strategies injection. It addresses common challenges, operational issues, remedial measures projects by covering studies from experiments, simulations, pore-scale modeling. This aims provide guidance serve as reference advancement CO2-EOR reservoirs.

Language: Английский

Citations

10
Pore-Scale Investigation of Water-Alternating-Gas Injection for CCUS in Water-Wet Porous Media DOI
Sheng Li, Yifan Zhang, Ningning Wang

et al.

Energy & Fuels, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 3, 2025

Language: Английский

Citations

1
CO2-Responsive Foam (CRF) for Mitigating CO2 Channeling in Heterogenous Reservoirs DOI
Qi Gao, Xingguang Xu, Shuai Liu

et al.

Energy & Fuels, Journal Year: 2024, Volume and Issue: 38(5), P. 3755 - 3768

Published: Feb. 23, 2024

CO2 foam has been identified as having significant applications in carbon capture utilization and storage (CCUS). This is attributed to its proven capability mitigate channeling during injection effectively; meanwhile, the majority of injected can be safely stored reservoirs through geo-sequestration. However, high pressure poor stability severely affect wide employment flooding. In this study, comprehensive investigations on a novel CO2-responsive (CRF) with desirable injectivity noticeable longevity are presented. system employs lauryl ether sulfate sodium (LES) diethylenetriamine (DETA) foaming agents, it exhibits notable reversible properties. property enables fluid transit between low high-viscosity states, enhancing performance reducing pressure. CRF less detrimental compared conventional polymer-enhanced (PEF) due ability switch gel-forming gel-breaking phases using CO2/N2. addition, rheological tests demonstrate that superior shear tolerance PEF. Moreover, shows greater higher salt resistance At NaCl concentration 5 × 104 mg/L, half-life (152 min) was nearly 13 times longer than PEF (11 min). It noted factor high-permeability cores low-permeability cores, indicating outstanding capacity block channels breakthrough. The results enhanced oil recovery (EOR) experiments indicated capable displacing more fractured identical experimental conditions. believed may applied viable CCUS technique enlighten strategies.

Language: Английский

Citations

7
Cellulose-Based Irreversible Hydrogels Used for CO2 Sequestration DOI
Dianguo Wu, Yan Zhang, Junjie Huang

et al.

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(20), P. 7950 - 7963

Published: May 3, 2024

CO2-switchable hydrogels have been well documented during the past decade; however, reversible response makes them unable to sequestrate CO2 owing gas release and viscosity reduction under high temperatures, weakening their capacity absorb CO2. To address this issue, a series of copolymers based on grafting poly(dimethylaminopropyl methacrylamide) onto backbone sodium carboxymethyl cellulose (NaCMC) were prepared, characterized, examined rheologically. In semidilute entangled regime, copolymer aqueous solutions can be gelled in presence CO2, but they cannot revert solution phase after bubbling N2 at 60 °C. With such irreversibility, 1 wt % with 24.88 mol DMAPMAm up 12.1 mg·g–1, whereas only 18.2% absorbed is released heating This work paves new way develop irreversible for sequestration.

Language: Английский

Citations

7
Development and evaluation of organic/metal ion double crosslinking polymer gel for anti-CO2 gas channeling in high temperature and low permeability reservoirs DOI Creative Commons
Hongbin Yang, Haizhuang Jiang, Zhe Xu

et al.

Petroleum Science, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 1, 2024

Language: Английский

Citations

5
A Review of Polymer Gel Utilization in Carbon Dioxide Flow Control at the Core and Field Scale DOI Creative Commons
Bergit Brattekås, R. S. Seright

SPE Journal, Journal Year: 2023, Volume and Issue: 28(06), P. 3291 - 3307

Published: Sept. 25, 2023

Summary Polymer gel has been used for water conformance control several decades and may have significant potential in remediating unfavorable carbon dioxide (CO2) flow the subsurface. High-mobility CO2 channel quickly through sedimentary reservoirs, where displacements are worsened presence of heterogeneities. Flow diversion technology targeting withstanding is therefore essential to improving sweep efficiency increasing storage potential. treatments demonstrated remediate channeling enhanced oil recovery (EOR) field applications proposed as a means wellbore seal leakage during sequestration. The goal this review assess by polymer published laboratory work related both EOR operations. Although implementation successful reducing flow, supporting experimental on scale scattered, with results parameters varied. This paper summarizes available literature proposes framework future aid more systematic assessment.

Language: Английский

Citations

13
Enhanced Oil Recovery and CO2 Storage by Enhanced Carbonated Water Injection: A Mini-Review DOI
Haiyang Yu,

Huiting Tang,

Xiaobing Han

et al.

Energy & Fuels, Journal Year: 2024, Volume and Issue: 38(14), P. 12409 - 12432

Published: July 3, 2024

Carbonated water (CW) injection refers to a development method that involves dissolving CO2 in under specific temperatures and pressures, followed by its into reservoirs for oil recovery. This technique can simultaneously enhance recovery facilitate storage, although effectiveness requires further improvement. To address this, an advanced approach known as enhanced carbonated (ECW) has been proposed. the addition of other fluids CW, including polymers, nanofluids, surfactants, low salinity water, serve displacement media during It aims leverage advantages various technologies storage effectiveness. Although ECW exhibits significant application potential, systematic summary research progress is still lacking. Therefore, this article fill gap systematically summarizing latest on injection, detailing mechanisms performance enhancing achieving storage. The effectively exploits synergistic benefits CW agents. Its primary include increasing dissolution prolonging duration retention reducing interfacial tension, altering wettability. Both laboratory experiments numerical simulations have demonstrated significantly boost offer promising results presenting it highly prospective reservoir development. In addition, paper discusses main challenges facing technology explores potential future directions, aiming provide robust guidance technology.

Language: Английский

Citations

5
Impact of hydroxyethyl headgroup on long-chain quaternary ammonium cationic surfactants: Solubility, surface activities, self-assembly behaviors, and rheological properties DOI
Zhenghua Sun, Yahui Ji, Haicheng Wang

et al.

Colloids and Surfaces A Physicochemical and Engineering Aspects, Journal Year: 2024, Volume and Issue: 700, P. 134831 - 134831

Published: July 16, 2024

Language: Английский

Citations

4
Impact of interlayer mass transfer on CO2 flooding performance in heterogeneous tight reservoirs DOI
Rundong Gong, Junrong Liu, Shuyang Liu

et al.

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(2)

Published: Feb. 1, 2025

CO2 flooding can effectively enhance oil recovery in tight reservoirs. However, the mobilization characteristics and interlayer mass transfer mechanism of crude heterogeneous reservoirs with permeability ratio (PR) remain unclear. We simulated by fabricating artificial PR cores conducted experiments under different miscibility states. Moreover, nuclear magnetic resonance was employed to distinguish quantify high-permeability layers (HPLs) low-permeability (LPLs), revealing mechanisms. The results indicated that, compared those immiscible partially miscible flooding, yielded a higher overall recovery, continuing increase after breakthrough. This is primarily due significant efficiency LPL. At this stage, displacement becomes less effective, mechanisms, such as extraction diffusion between HPL LPL, become dominant drivers recovery. In state, oil–gas interfacial tension vanishes, thus enhancing effects. significantly promotes transfer, mobilizing contributions LPL during were quantified, that final contribution former 1.69 times greater than latter. verifies primary for breakthrough, emphasizing its critical role processes.

Language: Английский

Citations

0