Results 31 to 40 of about 102,181 (202)

3D Discrete Fracture Network Modelling from UAV Imagery Coupled with Tracer Tests to Assess Fracture Conductivity in an Unstable Rock Slope: Implications for Rockfall Phenomena

Remote Sensing, 2023
The stability of a rock slope is strongly influenced by the pattern of groundwater flow through the fracture system, which may lead to an increase in the water pressure in partly open joints and the consequent decrease in the rock wall strength.
Elisa Mammoliti, Alessandro Pepi, Davide Fronzi, Stefano Morelli, Tiziano Volatili, Alberto Tazioli, Mirko Francioni   +6 more
doaj   +1 more source

Residual Damage, Its Consequences, and Remedial Measures on Post Hydrofrac Well Productivity: Learnt Lessons

Energies, 2022
Hydraulic fracturing or hydro-frac fluids can impede well production due to the damage caused to the reservoir formation and fracture face, generated from adverse interactions with reservoir rock.
Bisweswar Ghosh, Mumin Abdelrahim, Hadi Belhaj   +2 more
doaj   +1 more source

A comprehensive fracture network conductivity model for tight unconventional reservoirs considering various proppant size, creep deformation, and proppant compaction and embedment

Unconventional Resources
Graded proppant injection into complex fractures is frequently used to prop connected secondary fractures in tight unconventional reservoirs. A comprehensive conductivity model incorporating creep, decreasing proppant size distribution, proppant ...
Yingyan Li, Chenlin Hu, Jie Zeng, Wenfeng Wang, Shiqian Xu, Yingfang Zhou, Fanhua Zeng, Jingpeng Wang   +7 more
doaj   +1 more source

Laboratory Testing of Fracture Conductivity Damage by Foam-Based Fracturing Fluids in Low Permeability Tight Gas Formations

Energies, 2021
In the case of fracturing of the reservoirs using fracturing fluids, the size of damage to the proppant conductivity caused by treatment fluids is significant, which greatly influence the effective execution of hydraulic fracturing operations.
Klaudia Wilk-Zajdel, Piotr Kasza, Mateusz Masłowski   +2 more
doaj   +1 more source

Exploitation of fractured shale oil resources by cyclic CO2 injection

Petroleum Science, 2018
With shale oil reservoir pressure depletion and recovery of hydrocarbons from formations, the fracture apertures and conductivity are subject to reduction due to the interaction between stress effects and proppants.
Tao Wan, Hong-Xian Liu
doaj   +1 more source

The Calculation of Coal Rock Fracture Conductivity with Different Arrangements of Proppants

Geofluids, 2018
An accurate evaluation of coal rock fracture conductivity is an important prerequisite for predicting the productivity of CBM wells. Coal rock is soft and fragile, with low elastic modulus and high Poisson ratio.
Yuwei Li, Wannong Meng, Ray Rui, Jinghui Wang, Dan Jia, Gang Chen, Shirish Patil, Abhijit Dandekar   +7 more
doaj   +1 more source

Characterisation of the transmissivity field of a fractured and karstic aquifer, Southern France [PDF]

, 2015
International audienceGeological and hydrological data collected at the Terrieu experimental site north of Montpellier, in a confined carbonate aquifer indicates that both fracture clusters and a major bedding plane form the main flow paths of this ...
Cosgrove, J, Gosselin, O, Jardani, A, Jourde, H, Lonergan, L, Massonnat, G, Wang, X   +6 more
core   +3 more sources

Conductivity analysis of hydraulic fractures filled with nonspherical proppants in tight oil reservoir

Energy Science & Engineering, 2020
Hydraulic fracturing is an effective way to exploit hydrocarbons in tight oil reservoir. The success of this technique lies on the creation of high conductivity channels for the oil and gas.
Jiaxiang Xu, Yunhong Ding, Lifeng Yang, Zhe Liu, Rui Gao, Hanxuan Yang, Zhen Wang   +6 more
doaj   +1 more source

Estimating Unpropped-Fracture Conductivity and Fracture Compliance From Diagnostic Fracture-Injection Tests [PDF]

SPE Journal, 2018
Summary A new method is proposed to estimate the compliance and conductivity of induced unpropped fractures as a function of the effective stress acting on the fracture from diagnostic-fracture-injection-test (DFIT) data. A hydraulic-fracture resistance to displacement and closure is described by its compliance (or stiffness).
Wang, Hanyi, Sharma, Mukul
openaire   +3 more sources

Experimental characterization of fibre-reinforced composites improved with nanofibres or nanotubes [PDF]

, 2010
A review is presented on the testing and mechanical properties of continuous fibre reinforced composites modified with nanotubes or nanofibres either dispersed in the resin or grown on the microfibres.
Akkerman, R., Koissin, V., Warnet, L.
core   +2 more sources