Results 71 to 80 of about 5,239 (198)

Contemporary stress orientations in the Faroe-Shetland region [PDF]

, 2015
The Faroe-Shetland Region (FSR) of the NE Atlantic continental margin contains a number of complexly structured Mesozoic-Palaeogene-age rift basins, but in comparison to the contiguous British Isles and North Sea Basin, the state of crustal stress in the
Hillis, Richard R., Holford, Simon P., Stoker, Martyn S, Tassone, David R.   +3 more
core   +2 more sources

Machine Learning‐Based Seismic Subsurface Characterization: The State of the Art and Future Perspectives

Journal of Geophysical Research: Machine Learning and Computation, Volume 2, Issue 4, December 2025.
Abstract Seismic subsurface characterization involves interpreting seismic records to delineate geological features and estimate the physical properties of subsurface rocks (such as lithofacies, porosity, and fluid saturation). As an effective remote sensing technology to characterize the large‐scale spatial distribution of subsurface properties ...
Minghui Xu, Luanxiao Zhao, Mingliang Liu, Jianhua Geng   +3 more
wiley   +1 more source

Modeling and Analysis of Drilling Disturbance to Unconsolidated Natural Gas Hydrate Reservoirs

Shiyou jixie, 2023
China's sea area contains tremendous reserves of natural gas hydrates.However,such hydrate reservoirs with shallow burial and low strength are often unconsolidated,and drilling-induced disturbance may cause wellbore collapse and impact both the ...
Li Qingchao, Zhang Shikuo, Yang Yang, Li Fawang, Liu Yang, Jian Zhaoqi   +5 more
doaj  

Oil-Based Drilling Fluid Plugging Method for Strengthening Wellbore Stability of Shale Gas

Geofluids, 2021
Finding out the reasons for wellbore instability in the Longmaxi Formation and Wufeng Formation and putting forward drilling fluid technical countermeasures to strengthen and stabilize the wellbore are very crucial to horizontal drilling.
Pengcheng Wu, Chengxu Zhong, Zhengtao Li, Zhen Zhang, Zhiyuan Wang, Weian Huang   +5 more
doaj   +1 more source

Reactive-infiltration instabilities in rocks. Fracture dissolution

, 2012
A reactive fluid dissolving the surface of a uniform fracture will trigger an instability in the dissolution front, leading to spontaneous formation of pronounced well-spaced channels in the surrounding rock matrix.
Anthony J. C. Ladd, Bird, Boyd, Ebadian, Economides, Monagan, Motyka, Olver, Ortoleva, Piotr Szymczak   +9 more
core   +1 more source

Predicción del flujo multifásico en tuberías: artículo de revisión [PDF]

, 2015
In this work a review about the most relevant methods found in the literature to model the multiphase flow in pipelines is presented -- It includes the traditional simplified and mechanistic models, moreover, principles of the drift flux model and the ...
Baxendell, Brennen, Danielson, Duns, Han, Hasan, Ioannou, Loilier, Ma, Manrique, Mao, Modisette, Petalas, Poettmann   +13 more
core   +2 more sources

A Fully Coupled Numerical Model for Radial Collector Well Intake Simulation Incorporating Comprehensive Head Loss Mechanisms

Water Resources Research, Volume 61, Issue 12, December 2025.
Abstract This study presents a physically based numerical framework for accurately simulating the intake performance of radial collector wells (RCWs) by explicitly accounting for internal flow dynamics and all major head loss mechanisms. Unlike conventional models that often simplify RCW hydraulics, the proposed approach integrates aquifer, filter ...
Seonmin Lee, Min‐Ho Koo
wiley   +1 more source

Prediction of the Optimal Drilling Mud Weight Based on the Normalized Yielded Zone Area (NYZA) in One of the Iranian Oil Fields

Walailak Journal of Science and Technology, 2013
Hole problems experienced during the drilling phase of operations are often the consequence of mechanical wellbore instability. This leads to higher than necessary drilling costs.
Mohamad HEIDARIAN, Mahin SCHAFFIE, Hosein JALALIFAR, Saeed JAFARI   +3 more
doaj   +1 more source

Data on cost analysis of drilling mud displacement during drilling operation [PDF]

, 2018
The focus of this research was to present a data article for analyzing the cost of displacing a drilling fluid during the drilling operation. The cost of conventional Spud, KCl and Pseudo Oil base (POBM) muds used in drilling oil and gas wells are ...
Dosunmu, A., Iyuke, Sunny E., Okoro, Emeka Emmanuel   +2 more
core   +1 more source

Accurate Prediction Model of Annular Equivalent Circulating Density in “Wavy” Horizontal Wells of Shale Gas

Energy Science &Engineering, Volume 13, Issue 11, Page 5121-5132, November 2025.
Schematic diagram of wellbore trajectory of shale gas “wavy” horizontal well. ABSTRACT The thin thickness of shale reservoirs and the presence of faults often require frequent adjustments to the borehole trajectory during drilling, leading to the formation of “wavy” wellbores.
Dewei Gao, Jun Li, Geng Zhang, Hongwei Yang   +3 more
wiley   +1 more source