Results 41 to 50 of about 2,290 (232)

Modeling and monitoring injectivity evolution during cold CO2 injection with field evidence from aquistore carbon capture and storage operations

Deep Underground Science and Engineering, EarlyView.
This work integrates 5 years of field data from the Aquistore CCS project with a non‐isothermal THM modeling framework to explain how cold CO2 injection alters injectivity over time. The study shows that sustained cooling near the wellbore reduces effective stresses, promotes tensile micro‑cracking, and leads to semi‑reversible permeability enhancement
Alireza Rangriz Shokri, Stephen Talman, Erik Nickel, Rick Chalaturnyk   +3 more
wiley   +1 more source

Exploring the prospects and challenges of petrophysics research from the perspective of materials physics [PDF]

Rocks are the most prevalent material on solid planets, and using physical methods is the most practical and feasible way to explore planetary resources. This is also one of the most commonly used methods for oil and gas exploration on the Earth. However,
Dang, Lurui, Zhang, Benjian, Kang, Qiang, Zhang, Chun, He, Jiahuan, Wang, Liangjin   +5 more
core   +1 more source

Effects and Mechanisms of Dilute-Foam Dispersion System on Enhanced Oil Recovery from Pore-Scale to Core-Scale

Energies
The dilute-foam dispersion system improves oil recovery by reducing interfacial tension between oil and water, altering wettability, and diverting displaced fluids by plugging larger pores.
Xiuyu Wang, Rui Shen, Yuanyuan Gao, Shengchun Xiong, Chuanfeng Zhao   +4 more
doaj   +1 more source

An Improved Theoretical Nonelectric Water Saturation Method for Organic Shale Reservoirs

IEEE Access, 2019
The saturation of a shale gas reservoir is used to characterize the fluid content within the pores and to calculate the free gas content and reserves of the reservoir.
Linqi Zhu, Chong Zhang, Chaomo Zhang, Zhansong Zhang, Xueqing Zhou, Boyuan Zhu   +5 more
doaj   +1 more source

Numerical investigation of natural fracture activation and leakage risk during CO2 sequestration in depleted sandstone reservoirs

Deep Underground Science and Engineering, EarlyView.
This study investigates the hydro‐mechanical response and fracture evolution in depleted sandstone reservoirs during CO2 injection, considering both direct wellbore injection and hydraulic‐fracture‐assisted injection. The graphical abstract illustrates how CO2 injection induces dynamic stress redistribution, leading to natural fracture activation ...
Haiyang Wang, Chen Lu, Yufei Wang, Yichen Yang, Xu Su, Desheng Zhou, Qingqing Wang   +6 more
wiley   +1 more source

MODELING OF HYDROCARBON POTENTIAL AND THERMAL MATURITY OF GONGILA SHALE, CHAD BASIN, NORTHEASTERN NIGERIA; pp. 151–172 [PDF]

Oil Shale, 2012
The Bornu Basin, which represents a part of the Chad Basin in Nigeria, makes one-tenth of the total area of the Chad Basin that extends to the Republic of Niger, Chad and Cameroun.
ADEKUNLE ABRAHAM ADEPELUMI, OLATUNBOSUN ADEDAYO ALAO, BANKOLE DAYO AKO, RITA EBERE OSEIKPE   +3 more
doaj   +1 more source

Resistivity correction and water saturation evaluation for calcareous tight sandstone reservoir: A case study of G oil field in Sichuan Basin

Frontiers in Earth Science, 2023
The calcareous tight sandstone reservoir of the Triassic Shaximiao Formation in the G oil field of the central Sichuan Basin has high calcium content and abnormally high resistivity, making it difficult to reveal the oil-bearing property, evaluate water ...
Zhang Yu, Jia Jun, Hu Hua, Du Yao, Du Yao, An Hongyi, Fang Shi   +6 more
doaj   +1 more source

Low‐Temperature in Situ Upgrading of Ultra‐Deep Heavy Oil Using Ni–Ce/MOF–OTf Superacid Catalysts to Enhance Energy Utilization and Sustainability

EcoEnergy, EarlyView.
A triflate‐functionalized Ni–Ce/MOF–OTf superacid enables low‐temperature (∼140°C) in situ upgrading of ultra‐deep heavy oil. It reduces viscosity by 92.11% in 12 h, maintains activity over cycles, and delivers 90.25% recovery with a lower carbon footprint by selective bond cleavage. ABSTRACT Ultra‐deep heavy oil is an important unconventional resource,
Li Wang, Ji‐Xiang Guo, Qiming Huang, Kunpeng Li, Chi Li, Yajie Wu   +5 more
wiley   +1 more source

PETROPHYSICS OF PALEOZOIC LIMESTONE AT KINTA VALLEY [PDF]

, 2011
This report provides an analysis and findings throughout the entire progress towards the completion of the project: PETROPHYSICS OF PALEOZOIC LIMESTONE AT KINTA VALLEY.
YAAKOB, MUHAMMAD TAUFIQ
core  

Saturation evaluation of tight sandstone in the Dayi structure, West Sichuan Depression

Frontiers in Earth Science, 2023
Tight sandstone reservoirs are characterized by poor physical properties, strong heterogeneity, and complex pore structures, resulting in low reservoir saturation calculation accuracy, and the log interpretations do not match the gas test results.
Yuhao Guo, Liqiang Sima, Liang Wang, Xiangxi Miao, Angxing Li, Shute Su   +5 more
doaj   +1 more source