Article
Energy & Fuels
Ying Lin, Baoli Wang, Minmin Huang, Siyuan Chen, Chen Zhao
Summary: This paper introduces the application of three-dimensional (3D) elastic impedance inversion in oil and gas exploration, and proposes a prior information construction method based on random medium parameters. This method can maintain the spatial autocorrelation structure of the elastic impedance, thus guiding the identification and prediction of reservoirs. Numerical examples show that the proposed simulation method has smaller relative error and can more accurately describe the details of underground reservoirs based on prior inversion results.
GEOENERGY SCIENCE AND ENGINEERING
(2024)
Article
Energy & Fuels
Jiantao Zhang, Liang Yuan, Hanbing Yan
Summary: In this paper, a new buckling model of coiled tubing in a three-dimensional curved wellbore is established, considering the influence of the curvature and toolface angle of the wellbore and the initial CT bending curvature. The model is solved by the energy method and the critical buckling load, bending curvature, and axial load-pitch relationship can be obtained. The contact force calculation method for helical buckling configuration in a three-dimensional curved wellbore is also provided. The proposed model is validated by comparing with experimental data and existing models.
GEOENERGY SCIENCE AND ENGINEERING
(2024)
Article
Energy & Fuels
Xiaoguang Yuan, Tianquan Chang, Sheng Li, Yuan Gao, Huifei Tao, Weifeng Li, Chengshan Wang
Summary: This study investigates the control of sedimentary texture parameters on the physical properties of conglomerate reservoirs in a fan-delta environment. The results show that different lithofacies types have distinct physical properties due to variations in sorting coefficient and matrix content. Microfractures present in the conglomerates enhance permeability. In terms of hydrocarbon exploration, subaqueous distributary channels and lobes should be the primary targets.
GEOENERGY SCIENCE AND ENGINEERING
(2024)
Article
Energy & Fuels
Siwei Meng, Qirun Fu, Jiaping Tao, Lihao Liang, Jianchun Xu
Summary: This study introduces a novel workflow to develop a high-fidelity surrogate model tailored for CO2 enhanced oil recovery in low-permeability reservoirs. By adopting a data-driven approach and utilizing a neural network, the study improves the accuracy of predicting formation flow state variables and compares the results with numerical simulation. The findings demonstrate that the surrogate model can achieve high-fidelity prediction of CO2 enhanced oil recovery and storage.
GEOENERGY SCIENCE AND ENGINEERING
(2024)
Article
Energy & Fuels
Johannes Petrus van der Walt, Jan-Hendrik Kruger, Charl Gabriel du Toit
Summary: This article presents an approach to simulate internal leakage flows of centrifugal pumps, which is an important factor in enhancing equipment operation efficiency. By using a reduced order model (ROM), the need for complex and resource-intensive computational fluid dynamics (CFD) meshes is reduced while maintaining accuracy. The ROM has been validated against a commercial software package and has shown high precision in various operating conditions.
GEOENERGY SCIENCE AND ENGINEERING
(2024)
Article
Energy & Fuels
Jingxin Dang, Ling Yang, Caihui Qin, Qing Zhao, Xinbiao Ji, Cheng Guo, Bo Dang
Summary: This paper proposes a compressive sensing-based ranging method for adjacent well using current injection, which can achieve accurate ranging even in the case of a stuck logging tool.
GEOENERGY SCIENCE AND ENGINEERING
(2024)
Article
Energy & Fuels
Guilherme Rainho Melhorim, Gustavo A. B. Sandoval, Edson J. Soares, Renato do Nascimento Siqueira, Adriana Teixeira, Leandro Valim
Summary: Hydrate formation is a significant flow assurance problem in the industry, influenced by various variables. This study investigates the impact of sub-cooling, mean droplet diameter, shear rate, and wax paraffin in emulsified systems on hydrate formation. The findings reveal that the gas amount in the system at the beginning of the process plays a crucial role in the induction time of hydrate formation, and viscosity curves alone cannot fully capture the details of hydrate formation.
GEOENERGY SCIENCE AND ENGINEERING
(2024)
Article
Energy & Fuels
Hualin Liao, Yuhang He, Huajian Wang, Minsheng Wang, Jun Wei, Jilei Niu
Summary: The performance and motion characteristics of a downhole intensifier controlled by an electromagnetic valve were studied, and numerical simulations were conducted to analyze the relationship between the intensifier's output waveform and various parameters. The study found that adjusting the switching frequency of the electromagnetic valve can change the duration of the intensifier's output pressure, which is beneficial for forming grooves with different characteristics.
GEOENERGY SCIENCE AND ENGINEERING
(2024)
Article
Energy & Fuels
Abdullah Al-Dhafeeri, Murtada Saleh Aljawad, Mustafa Al-Ramadan, Ahmed Farid Ibrahim, Muhammad M. Al Majid, Zuhair Al-Yousif, Ahmed Al-Yaseri
Summary: Deep saline aquifers are a good option for CO2 sequestration, and this study reveals the impact of salinity on wormhole generation and rock properties.
GEOENERGY SCIENCE AND ENGINEERING
(2024)
Article
Energy & Fuels
Tongwei Yuan, Diansheng Wang, Hongguang Sui
Summary: This study develops a theory to unlock the potential of Nuclear Magnetic Resonance (NMR) in assessing emulsion stability and comprehending complex multiphase systems. The theory integrates experiments and a physical model to understand the microscale mechanisms in NMR measurements of crude oil emulsion properties. The results show a strong correlation between NMR T-2 times and various character properties of Petroleum-Water-CO2 Emulsion samples, and propose the parameter Theta to characterize emulsion stability.
GEOENERGY SCIENCE AND ENGINEERING
(2024)
Article
Energy & Fuels
Hui Liu, Wenqiang Lou, Hua Li, Zhiyuan Wang, Yonghai Gao, Hao Li, Baojiang Sun
Summary: Wellbore liquid loading is a severe problem in natural gas production, and accurate prediction of liquid loading is crucial for preventing related hazards. In this study, a new model based on gas-liquid two-phase annular flow mechanisms was developed to calculate temperature and pressure fields in the gas well. The model considers the velocity difference between the gas core and liquid film, as well as the migration of liquid droplets. The liquid loading prediction model for the entire wellbore was established based on the flow mechanism of the liquid film. The model accurately predicts wellbore temperature and pressure, with relative errors ranging from 0.09% to 8.42% for pressure and an average relative error of 5.96% for temperature. The modified model shows more precise results in predicting liquid loading compared to three classical models. The research provides theoretical support for early prediction of liquid loading and dewatering in liquid-producing gas wells.
GEOENERGY SCIENCE AND ENGINEERING
(2024)
Article
Energy & Fuels
Lianbo Zeng, Xiang Xu, Shijie Ma, Hanyong Bao, He Tian, Zhe Mao, Mehdi Ostadhassan, Shaoqun Dong, Wenya Lyu
Summary: This study investigates the contribution of lamellation fractures to porosity and permeability in shale reservoirs in the Wufeng-Longmaxi Formation in the Sichuan Basin. Results show that lamellation fractures can increase porosity by 6%-10% and improve shale petrophysical properties. Additionally, the presence of lamellation fractures increases the pressure sensitivity of permeability. Ultimately, lamellation fractures can significantly enhance the permeability of shale reservoirs.
GEOENERGY SCIENCE AND ENGINEERING
(2024)
Article
Energy & Fuels
Jhuan B. Cedro, Grigori Chapiro
Summary: This paper investigates the traveling wave solution of foam flow in porous media, using a semi-analytical technique and a non-Newtonian foam flow model. The solution connecting the initial and injection conditions is found through the explicit foam's apparent viscosity. The results of this study are validated through comparison with experimental data and direct numerical simulations.
GEOENERGY SCIENCE AND ENGINEERING
(2024)
Article
Energy & Fuels
Xueshu Li, Shang Zhang, Xuemei Wang, Xueqin Du, Guoming Yu, Aixiang Li, Qiuhong Li
Summary: A magnetic ionic liquid with high surface activity and magnetic responsiveness was synthesized and used to prepare a magnetic ionic liquid microemulsion for the effective treatment of oily sludge. The results showed that the magnetic ionic liquid exhibited low interfacial tension and good solubilization ability, and could be recovered and reused using a magnetic field.
GEOENERGY SCIENCE AND ENGINEERING
(2024)
Article
Energy & Fuels
Sepideh Davoodi, Sogand Asadolahi Shad, Vahid Tavakoli
Summary: This paper investigates the heterogeneity and rock types of the upper Dalan and Dariyan formations in the Persian Gulf. The Lucia's method is used to manage and compare the data from thin sections and porosity-permeability measurements. The results show that the upper Dalan formation falls primarily into Lucia classes 1 and 2, while the Dariyan formation falls into class 3 and the lower part of the Lucia's chart. This suggests that the Lucia's method is more suitable for grain-dominated formations.
GEOENERGY SCIENCE AND ENGINEERING
(2024)
Article
Energy & Fuels
Randy Agra Pratama, Tayfun Babadagli
Summary: This paper evaluates and analyzes three decades of ongoing SAGD projects in Canada, examining their successes, failures, lessons learned, and limitations from multiple perspectives. It identifies the reasons for successful SAGD practices and provides recommendations for designing new projects and improving existing ones. The paper also explores the potential of mature SAGD projects and presents new insights for the future of SAGD.
GEOENERGY SCIENCE AND ENGINEERING
(2024)
Article
Energy & Fuels
Kaiqiang Wu, Mingming He, Xinxing Liu, Bo Luo, Xudong Ma, Chunchi Ma
Summary: This study investigates the transverse anisotropy in rock masses using digital drilling tests and evaluates them using various indices. The results show significant variations in transverse anisotropy among different rock types at different depths.
GEOENERGY SCIENCE AND ENGINEERING
(2024)
Article
Energy & Fuels
Abdulmalek Ahmed, Salaheldin Elkatatny, Abdulrauf R. Adebayo
Summary: This study used synthetic layered clay laponite to address the issue of particle settling in ilmenite-weighted oil well cement under high pressure and high-temperature conditions. The investigation found that adding 0.3% laponite led to a significant reduction in particle settling and improved rheological, mechanical, and petrophysical properties of the cement.
GEOENERGY SCIENCE AND ENGINEERING
(2024)
Article
Energy & Fuels
Changxu Wu, Junpeng Liu, Jin Zhang
Summary: The pre-cooling mechanism of LNG cryogenic corrugated hoses is complicated. Conventional predicting temperature drop methods for pre-cooling heat transfer simplify it to a steady heat transfer analysis, resulting in inaccurate results. Considering the turbulent flow effect caused by the corrugated contour, a mathematic model is built to capture the temperature distribution in hoses. The numerical integration method is used to calculate the average temperature of the section under pre-cooling and stable operation. Case studies show the factors that affect the pre-cooling process. The results provide an efficient tool for calculating the temperature of LNG cryogenic corrugated hose during the pre-cooling process.
GEOENERGY SCIENCE AND ENGINEERING
(2024)
Article
Energy & Fuels
Muhammad Andiva Pratama, Omar Al Qoroni, Idham Kholid Rahmatullah, Mohammed Farhan Jameel, Ruud Weijermars
Summary: This study provides insights into using the Gaussian DCA method to forecast well rates and estimate resource volumes from unconventional reservoirs. Comparing with the conventional Arps method, the Gaussian DCA method shows faster speed and less error in history-matching process. It accurately captures the first spike in actual production rates and provides reliable hydraulic diffusivity parameter.
GEOENERGY SCIENCE AND ENGINEERING
(2024)
