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State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China

Prof. Dr. Rui Song

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State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China

Dr. Liuke Huang

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School of Civil Engineering and Geomatics, Southwest Petroleum University, Chengdu, Sichuan 610500, China

Dr. Yao Wang

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School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang 621010, China

Dr. Mingyang Wu

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State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China

Dr. Gang Hui

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Unconventional Petroleum Research Institute, China University of Petroleum Beijing, Beijing 102249, China

Exploitation and Underground Storage of Oil and Gas

Abstract submission deadline

30 June 2026

Manuscript submission deadline

30 September 2026

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Topic Information

Dear Colleagues,

As one of the most important fuels in modern society, oil and gas exploitation has been a research focus for a long period. Meanwhile, amidst the escalating global energy demand and accelerating energy transition, underground resource storage, including natural gas, carbon dioxide (CO₂), hydrogen (H₂), oil, etc., has attracted much attention in recent years. This Topic aims to converge the forefront scientific achievements in this research field and delve into novel theories, technologies, materials, processes, and equipment for oil and gas exploration, development, and underground storage. Sharing case studies and experiences in oil and gas development from deep-sea, deep-earth, and complex geological environments is encouraged, while also emphasizing environmental protection and carbon neutrality pathways throughout the development of storage processes . We eagerly anticipate your submissions and look forward to collectively contributing to the establishment of a safer, cleaner, and more efficient energy system. Topics of interest for publication include, but are not limited to, the following:

Carbon dioxide fracturing for enhanced permeability and carbon sequestration;
Multiphase fluid transport with phase change in fractured porous media;
Heat and mass transport in fractured porous media;
Mechanism of thermal fluid solidification in rock mass under the influence of fracture networks;
New advances in experimental modeling methods;
New advances in numerical modeling and simulation software;
Artificial intelligence and big data applications;
Coupled thermal–hydraulic–mechanical–chemical modeling and experiments;
Hydraulic fracturing and waterless fracturing in unconventional reservoirs.

Prof. Dr. Jianjun Liu
Prof. Dr. Rui Song
Dr. Liuke Huang
Dr. Yao Wang
Dr. Mingyang Wu
Dr. Gang Hui
Topic Editors

Keywords

multiphase flow
porous media
relative permeability
oil and gas exploitation
physical modeling
numerical simulation
geomechanics
petroleum engineering
energy storage
hydraulic fracturing
rock mechanics

Participating Journals

Journal Name	Impact Factor	CiteScore	Launched Year	First Decision (median)	APC
Applied Sciences applsci	2.5	5.3	2011	17.8 Days	CHF 2400	Submit
Energies energies	3.0	6.2	2008	17.5 Days	CHF 2600	Submit
Journal of Marine Science and Engineering jmse	2.7	4.4	2013	16.9 Days	CHF 2600	Submit
Processes processes	2.8	5.1	2013	14.4 Days	CHF 2400	Submit
Resources resources	3.6	7.2	2012	33.4 Days	CHF 1600	Submit

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Published Papers (7 papers)

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16 pages, 6534 KiB

Open AccessArticle

Experimental Study on Miscible Phase and Imbibition Displacement of Crude Oil Injected with CO₂ in Shale Oil Reservoir

by Haibo He, Xinfang Ma, Bo Wang, Yuzhi Zhang, Jianye Mou and Jiarui Wu

Appl. Sci. 2024, 14(22), 10474; https://doi.org/10.3390/app142210474 - 14 Nov 2024

Viewed by 296

Abstract

Jimsar shale oil in China has undergone a rapid decline in formation energy and has a low recovery rate, with poor reservoir permeability. CO₂ injection has become the main method for improving oil recovery. Pre-fracturing with CO₂ energy storage in Jimsar shale oil has been performed, yielding a noticeable increase in oil recovery. However, the CO₂ injection mechanism still requires a deeper understanding. Focusing on Jimsar shale oil in China, this paper studies the effect of CO₂ on crude oil viscosity reduction, miscible phase testing, and the law of imbibition displacement. The results show that CO₂ has a significant viscosity reduction effect on Jimsar shale oil, with a minimum miscible pressure between CO₂ and Jimsar shale oil of 25.51 MPa, which can allow for miscibility under formation conditions. A rise in pressure increased the displacement capacity of supercritical CO₂, as well as the displacement volume of crude oil. However, the rate of increase gradually declined. This research provides a theoretical basis for CO₂ injection fracturing in Jimsar shale oil, which is helpful for improving the development effects of Jimsar shale oil. Full article

(This article belongs to the Topic Exploitation and Underground Storage of Oil and Gas)

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19 pages, 6834 KiB

Open AccessArticle

Experimental Study on the Efficiency of Fracturing Integrated with Flooding by Slickwater in Tight Sandstone Reservoirs

by Pingtian Fan, Yuetian Liu, Ziyu Lin, Haojing Guo and Ping Li

Processes 2024, 12(11), 2529; https://doi.org/10.3390/pr12112529 - 13 Nov 2024

Viewed by 374

Abstract

Tight reservoirs, with their nanoscale pore structures and limited permeability, present significant challenges for oil recovery. Composite fracturing fluids that combine both fracturing and oil recovery capabilities show great potential to address these challenges. This study investigates the performance of a slickwater-based fracturing fluid, combined with a high-efficiency biological oil displacement agent (HE-BIO), which offers both production enhancement and environmental compatibility. Key experiments included tests on single-phase flow, core damage assessments, interfacial tension measurements, and oil recovery evaluations. The results showed that (1) the slickwater fracturing fluid effectively penetrates the rock matrix, enhancing oil recovery while minimizing environmental impact; (2) it causes substantially less damage to the reservoir compared to traditional guar gum fracturing fluid, especially in cores with little higher initial permeability; and that (3) oil recovery improves as HE-BIO concentration increases from 0.5% to 2.5%, with 2.0% as the optimal concentration for maximizing recovery rates. These findings provide a foundation for optimizing fracturing oil displacement fluids in tight sandstone reservoirs, highlighting the potential of the integrated fracturing fluid to enhance sustainable oil recovery. Full article

(This article belongs to the Topic Exploitation and Underground Storage of Oil and Gas)

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15 pages, 3856 KiB

Open AccessArticle

A Prediction Method for Calculating Fracturing Initiation Pressure Considering the Modification of Rock Mechanical Parameters After CO₂ Treatment

by Cuilong Kong, Yuxue Sun, Hao Bian, Jianguang Wei, Guo Li, Ying Yang, Chao Tang, Xu Wei, Ziyuan Cong and Anqi Shen

Processes 2024, 12(11), 2525; https://doi.org/10.3390/pr12112525 - 13 Nov 2024

Viewed by 309

Abstract

The establishment of a more realistic CO₂ fracturing model serves to elucidate the intricate mechanisms underlying CO₂ fracturing transformation. Additionally, it furnishes a foundational framework for devising comprehensive fracturing construction plans. However, current research has neglected to consider the influence of CO₂ on rock properties during CO₂ fracturing, resulting in an inability to precisely replicate the alterations in the reservoir post-CO₂ injection into the formation. This disparity from the actual conditions poses a substantial limitation to the application and advancement of CO₂ fracturing technology. This work integrates variations in the physical parameters of rocks after complete contact and reaction with CO₂ into the numerical model of crack propagation. This comprehensive approach fully acknowledges the impact of pre-CO₂ exposure on the mechanical parameters of reservoir rocks. Consequently, it authentically restores the reservoir state following CO₂ injection, ensuring a more accurate representation of the post-fracturing conditions. In comparison with conventional numerical simulation methods, the approach outlined in this paper yields a reduction in the error associated with predicting fracturing pressure by 9.8%. Full article

(This article belongs to the Topic Exploitation and Underground Storage of Oil and Gas)

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18 pages, 3400 KiB

Open AccessArticle

Seepage–Diffusion Mechanism of Gas Kick Considering the Filtration Loss of Oil-Based Muds During Deepwater Drilling

by Yanli Guo, Weiqi Liu, Chaojie Song, Qingtao Gong and Yao Teng

J. Mar. Sci. Eng. 2024, 12(11), 2035; https://doi.org/10.3390/jmse12112035 - 10 Nov 2024

Viewed by 568

Abstract

As oil and gas exploration gradually advances into deep waters, the combined effects of various types of gas kick and the accurate calculation of the gas-kick volume have gained increasing attention. This study focused on gas kicks from permeable gas-bearing formations, considering the mass transfer of gas in the filtration region of the drilling fluids and revealed the mechanisms of seepage-driven and diffusion-driven gas kicks. Based on seepage mechanics and diffusion theory, a comprehensive model for calculating gas-kick volume was established, considering the synergistic effect of gas-concentration-diffusion and negative-differential-pressure, as well as mass transfer in both the filtrate zone and the filter-cake zone. The new model showed high calculation accuracy. The sensitivity analysis showed that both the seepage-driven and diffusion-driven gas-kick volumes in the wellbore increased with increasing formation porosity and open-hole length, while the thickness of the filter cake had a strong inhibitory effect on both. Additionally, a “seepage–diffusion ratio” was introduced to reveal the gas-kick evolution pattern under a seepage–diffusion mechanism. Under specific case conditions, when the seepage–diffusion ratio was less than approximately 1%, diffusion-driven gas kick contributed more than seepage-driven gas kick; when the seepage–diffusion ratio exceeded 1%, seepage-driven gas kick contributed more than diffusion-driven gas kick. The research can provide crucial parameters for wellbore multiphase flow calculation and wellbore pressure prediction. Full article

(This article belongs to the Topic Exploitation and Underground Storage of Oil and Gas)

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17 pages, 4939 KiB

Open AccessArticle

Experimental and Numerical Study on Nonlinear Shear Behavior and Constitutive Model of Deep Shale Laminae Planes

by Renyan Zhuo, Xinfang Ma, Jianmin Li, Shicheng Zhang and Junxiu Ma

Processes 2024, 12(11), 2445; https://doi.org/10.3390/pr12112445 - 5 Nov 2024

Viewed by 451

Abstract

The direct shear tests showed that the degradation of unevenness and waviness of the laminae plane is the primary reason for the dynamic decrease in shear strength. A shear constitutive model was proposed which considers the scale effect and the asperity geometry of the unevenness and waviness of the laminar plane. The evolution of the shear strength and stiffness with a normal stress and scale effect during the shearing of shale laminae planes was explored. The results show that high normal stress aggravates the stiffness hardening of laminae planes and forms larger peak shear stress and peak shear displacement. At the lab scale, the increase in the unevenness wavelength has a hardening effect on the shear stiffness and strength. The small-scale unevenness contributes most to the shear strength of shale laminae planes at the lab scale. At the field scale, the increase in the waviness wavelength has a softening effect on the shear stiffness and strength. Full article

(This article belongs to the Topic Exploitation and Underground Storage of Oil and Gas)

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24 pages, 10284 KiB

Open AccessArticle

Deep-Learning-Based Amplitude Variation with Angle Inversion with Multi-Input Neural Networks

by Shiping Tao, Yintong Guo, Haoyong Huang, Junfeng Li, Liqing Chen, Junchuan Gui and Guokai Zhao

Processes 2024, 12(10), 2259; https://doi.org/10.3390/pr12102259 - 16 Oct 2024

Viewed by 721

Abstract

Deep-learning-based (DL-based) seismic inversion has emerged as one of the state-of-the-art research areas in exploration geophysics with the development of artificial intelligence technology. Due to its good portability and high computational efficiency, this method has emerged as a data-driven approach for estimating subsurface properties. However, most of the current DL-based methods rely solely on seismic data, lacking the incorporation of prior information. In addition, these methods are usually performed trace-by-trace, resulting in insufficient horizontal constraints. These limitations make traditional methods less robust, particularly when dealing with high noise levels or limited data. To address these challenges, we propose a multi-input deep learning network for pre-stack inversion, which combines data-driven and model-driven approaches for optimization. The proposed method separately extracts features from the model and data, merging them to improve feature utilization. Moreover, by adopting a 2-D training unit, rather than a trace-by-trace approach, the method improves the horizontal continuity of the results. Tests on synthetic and real seismic data confirmed the robustness and improved stability of the proposed method, even under challenging conditions. This dual-driven approach significantly enhances the reliability of seismic inversion. Full article

(This article belongs to the Topic Exploitation and Underground Storage of Oil and Gas)

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13 pages, 13631 KiB

Open AccessArticle

Sensitivity Analysis of Depth-Controlled Oriented Perforation in Horizontal Wells Based on the 3D Lattice Method

by Haining Zhang, Yanhong Gou, Daojie Cheng, Fengsheng Zhang, Xunan Jia, Rui Gao and Yuwei Li

Processes 2024, 12(10), 2192; https://doi.org/10.3390/pr12102192 - 9 Oct 2024

Viewed by 596

Abstract

The main method used to exploit unconventional oil and gas reservoirs involves multi-cluster perforation combined with hydraulic fracturing in horizontal wells. However, as the use of this technology has expanded, challenges like reduced perforation efficiency and elevated fracture initiation pressure have surfaced. The depth-controlled oriented perforation technique helps achieve uniform fracture initiation, enhance efficiency, and lower initiation pressure. In this study, a hydraulic fracturing fluid–solid coupling model at the perforation scale was established using the 3D lattice method to compare the near-wellbore fracture morphologies of depth-controlled oriented perforation, spiral perforation, and oriented perforation. Additionally, this study analyzes the effects of injection rate, reservoir elastic modulus, and horizontal stress difference on the fracture morphology and initiation pressure of depth-controlled oriented perforation. This study clarifies the applicability of depth-controlled oriented perforation in different types of reservoirs for the first time. The results indicate that intermediate fractures between spiral and oriented perforations are hindered, while depth-controlled oriented perforation ensures uniform fracture initiation. In the injection rate range of 0.144 to 0.360 L/min, an increase in injection rate accelerates the rise of fluid pressure within the perforations, leading to an increase in fracture initiation pressure. Therefore, excessively high injection rates are unfavorable for fracture initiation. Through depth-controlled oriented perforation, long and singular fractures can be formed in reservoirs with significant horizontal stress differences and high elastic moduli. Full article

(This article belongs to the Topic Exploitation and Underground Storage of Oil and Gas)

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Journal Name	Impact Factor	CiteScore	Launched Year	First Decision (median)	APC
Applied Sciences applsci	2.5	5.3	2011	17.8 Days	CHF 2400	Submit
Energies energies	3.0	6.2	2008	17.5 Days	CHF 2600	Submit
Journal of Marine Science and Engineering jmse	2.7	4.4	2013	16.9 Days	CHF 2600	Submit
Processes processes	2.8	5.1	2013	14.4 Days	CHF 2400	Submit
Resources resources	3.6	7.2	2012	33.4 Days	CHF 1600	Submit

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Exploitation and Underground Storage of Oil and Gas

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Published Papers (7 papers)

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