Results 91 to 100 of about 777 (212)

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

Reusing depleted oil and gas wells for geothermal energy: Feasibility, challenges, and a decision‐making framework for sustainable conversion

Deep Underground Science and Engineering, EarlyView.
The graphical abstract presents a structured decision‐support framework for assessing the feasibility of converting depleted oil and gas wells into geothermal energy systems. The left panel illustrates a comprehensive, multi‐stage decision‐making framework progressing from prefeasibility screening and technical–economic analysis to policy alignment ...
Karolina Bieryt, Yu Pan, Heinz Konietzky, Fei Wang   +3 more
wiley   +1 more source

Optimization of artificial neural network models using genetic algorithm for accurate estimation of water saturation

Deep Underground Science and Engineering, EarlyView.
A comprehensive comparative study of five artificial neural network (ANN) architectures (convolutional neural network [CNN], recurrent neural network, feedforward neural network, multi‐layer perceptron, radial basis function network) was conducted for water saturation prediction in petroleum reservoirs.
Ali Akbari, Ali Ranjbar
wiley   +1 more source

Investigation on the propagation characteristics of pressure wave during managed pressure drilling

Frontiers in Energy Research
The small difference between formation pressure and fracture pressure in offshore oil and gas reservoirs poses a huge challenge to drilling. Managed pressure drilling (MPD) technology, as a drilling technique that can accurately control bottomhole ...
Yanan Hou, Zhong Li, Zhiming Yin, Baitao Fan, Yingwen Ma, Xiangqian Yang, Deqiang Tian, Wenjun Cai, Meipeng Ren, Xingquan Zhang   +9 more
doaj   +1 more source

Assessment of Yield Stress in Oil-Based Drilling Fluids

, 2023
Yield stress is commonly used to describe the rheological properties of drilling fluids. There are various methods to define such yield stress. Some approaches provide yield stress values sufficient to derive a proper fluid mechanical model while other approaches define the fluid properties as comparable matters. Here logarithmic values from shear rate
Ytrehus, Jan David, Feneuil, Blandine Fleur Prudence, Saasen, Arild   +2 more
openaire   +1 more source

Renewable energy mapping in Northeastern Morocco: A geographic information system‐based comparison of geothermal, solar, and wind potential in the Guercif‐Guilliz and Beni Snassen regions

Deep Underground Science and Engineering, EarlyView.
The graphical abstract summarizes a geographic information system (GIS)‐based synthesis of renewable energy resources in Northeastern Morocco, focusing on the Guercif‐Guilliz and Beni Snassen areas. It visually presents the spatial distribution of solar irradiation and wind energy potential derived from available datasets, alongside their relationship ...
Meryem Redouane, Hind Khalis, Faouziya Haissen, Othman Sadki, Hicham El Asmi, Abdelbarie Redouane   +5 more
wiley   +1 more source

Selecting appropriate hydraulic fracturing methods for wells in deep and tight fractured sandstone reservoirs

Deep Underground Science and Engineering, EarlyView.
Deep and tight sandstone reservoirs require hydraulic fracturing treatment to enhance production, even in the presence of natural fractures. In the oil and gas industry, two commonly used methods are open‐hole multistage fracturing (MSF) and cased‐hole perforation fracturing. Both methods can fail or underperform in deep and tight reservoirs.
Kaiming Xia, Adel A. Qahtani
wiley   +1 more source

Opium trade and use during the Late Bronze Age: Organic residue analysis of ceramic vessels from the burials of Tel Yehud, Israel

Archaeometry, EarlyView., 2022
Abstract Organic residue analysis was conducted on various vessels from burials at Tel Yehud, Israel. The analyses led to new reliable evidence for the presence of opioid alkaloids and their decomposition products. This research revitalizes a decades‐old discussion on the presence and function of the opium trade across a cultural region of utmost ...
Vanessa Linares, Eriola Jakoel, Ron Be’eri, Oded Lipschits, Ronny Neumann, Yuval Gadot   +5 more
wiley   +1 more source

Correction and Parameter Calculation of Gas Logging and Geochemical Logging Interference in Shale Oil Reservoirs under Oil-Based Drilling Fluid Conditions

Cejing jishu
During the process of oil and gas exploration, logging data is of great significance for the interpretation and evaluation of reservoirs. However, when oil-based drilling fluids are used in the drilling operations of complex wells, due to the large ...
ZHENG Shanshan, SUN Jianmeng, YANG Dong, ZHANG Hengrong, CHENG Jiajie, WANG Meng   +5 more
doaj   +1 more source

Gel Evolution in Oil Based Drilling Fluids

, 2012
Drilling fluids make up an essential part of the drilling operation. Successful drilling operations rely on adequate drilling fluid quality. With the development of new drilling techniques such as long deviated sections and drilling in ultra-deep waters, the standard of required performance of the drilling fluids continue to increase.
openaire   +1 more source