Results 61 to 70 of about 13,384 (264)

A comprehensive review of the application of nano-silica in oil well cementing

open access: yesPetroleum, 2020
Oil and Gas Industry is a Multi-Billion Dollar Industry. Drilling a well is costly, right from exploration to drilling and production to Enhanced Oil Recovery (EOR).
Akshar Thakkar   +4 more
doaj   +1 more source

A novel construction approach for the pore structure model principally focuses on the controllable roundness of rock particles

open access: yesDeep Underground Science and Engineering, EarlyView.
Particle rounding effects comparison of different methods: (a), (b), and (c) are the rounding results using the B‐spline curve method with different R; (d), (e), and (f) are the results of vertex rounding substitution method with different rounding radii.
Jiabin Dong   +6 more
wiley   +1 more source

Technical difficulties in the cementing of horizontal shale gas wells in Weiyuan block and the countermeasures

open access: yesNatural Gas Industry B, 2016
When well cementing is conducted in horizontal shale gas wells in Weiyuan block of the Weiyuan–Changning State Shale Demonstration Area, Sichuan Basin, the oil-based drilling fluid is not compatible with cement slurry, is difficult to be displaced ...
Jinping Yuan   +5 more
doaj   +1 more source

Effect of confining pressure on fracture characteristics and mineralogical behavior of tight sandstone specimens after hydraulic fracturing

open access: yesDeep Underground Science and Engineering, EarlyView.
Hydraulic fracturing in tight sandstone and fracture propagation characteristics using backscattered electron‐scanning electron microscope (BSE‐SEM) images. Abstract This study focuses on hydraulic fracturing experiments conducted under triaxial conditions on tight sandstone specimens from Shivpuri district, Madhya Pradesh, India.
Pankaj Rawat, Narendra Kumar Samadhiya
wiley   +1 more source

Manipulating cement-steel interface by means of electric field: Experiment and potential applications

open access: yesAIMS Materials Science, 2016
Good shear bonding and hydraulic bonding between cement and steel play a crucial role in well integrity of oil and gas wells. In this experimental study, we investigate the effect that constant electric field may have on the bonding at cement-steel ...
Kamila Gawel   +2 more
doaj   +1 more source

Data‐driven analysis of the spatial dependence of grouting efficiency during tunnel excavation

open access: yesDeep Underground Science and Engineering, EarlyView.
Prediction of grouting efficiency using machine learning is enhanced by adopting a training strategy that accounts for the grouting process across multiple rounds. Abstract Grouting with water–cement mixtures is the most widely used and cost‐effective method for managing excess water inflow during tunnel construction.
Huaxin Liu, Xunchang Fei, Wei Wu
wiley   +1 more source

Resonance‐induced restoration of rock permeability degraded by heavy components of crude oil

open access: yesDeep Underground Science and Engineering, EarlyView.
Resonance‐induced changes occur in filtration properties of sedimentary rocks in crude paraffin oil flow under acoustic vibrations. Experimental data on (a) pressure drop; (b) permeability; (c) pressure at the rock inlet; and (d) pressure at the rock outlet are presented.
Evgenii Riabokon   +6 more
wiley   +1 more source

Evaluation of the performance of local cement for oil well cementing operations in Algeria

open access: yesJournal of Materials and Engineering Structures, 2018
The cementing of oil wells is done using special cement called ‘’class G cement’’, whose properties should meet the requirements of the American Petroleum Institute (API).
Mehena OUALIT, Amar IREKTI, Brahim HAMI
doaj  

Effect of dusty clinker and alite crystal size on the properties of class G oil well cement slurries

open access: yesJournal of Petroleum Exploration and Production Technology
Honing the quality of cement plays a pivotal role in the petroleum industry throughout drilling operations, undoubtedly. In cement plants, producing high-quality clinker is essential for improving oil well maintenance, reducing expenditures, enhancing ...
Reza Farazmand   +5 more
doaj   +1 more source

A rock brittleness index based on the postpeak energy release rate and damage surface characteristics for brittle hard rock

open access: yesDeep Underground Science and Engineering, EarlyView.
This study examines energy evolution in rock rupture via triaxial direct shear tests, exploring the impact of confining pressure and temperature on fracture surface randomness. A novel energy‐based brittleness index is proposed, validated experimentally, and compared with existing methods for reliability and accuracy.
Biao Wang   +5 more
wiley   +1 more source

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