Results 231 to 240 of about 432,547 (311)

Design and application study of the key technical parameters of dense drilling for pressure relief in coal mine roofs: a case study. [PDF]

Sci Rep
Ma J, Wang H, Li X, Dong G, Yuan Y.
europepmc   +1 more source

Evaluation and Comparison of Crestal Bone Loss Around Dental Implants Placed Using Conventional Drilling, Bone Expansion, and Ridge Split Techniques: An In Vivo Study. [PDF]

Cureus
Goyal K, Sahoo S, Gupta AD, Dahiya S, Agarwal P, Katyal S, Verma R, Dutta S, Phade R, Gupta S.   +9 more
europepmc   +1 more source

Research on the drilling pipe health monitoring and intelligent life prediction management platform. [PDF]

Sci Rep
Gao X, Wu X, Li Q, Wang L, Zhu Z, Qu F.
europepmc   +1 more source

Influence of a passive shoulder exoskeleton on drilling performance in women- a cross-sectional study. [PDF]

Sci Rep
Gräf JK, Wollesen B, Díaz MA, De Bock S, Hansen L, Ducastel V, Preckher A, Roelands B, De Pauw K.   +8 more
europepmc   +1 more source

Significance and complications of drilling fluid rheology in geothermal drilling: A review

Geothermics, 2021
The harsh downhole conditions of high pressure and high temperature (HPHT) encountered in geothermal wells make the drilling operation challenging. Drilling in such environments requires a special drilling mud formulation with high thermal stability and ...
Ramadan Ahmed, Saeed Salehi, Abdelmjeed Mohamed   +2 more
exaly   +2 more sources

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Polymer nanocomposites application in drilling fluids: A review

Geoenergy Science and Engineering, 2023
Indubitably, drilling fluid is the most crucial component of drilling operations. With the current exploration of hydrocarbons in deep water horizons, unconventional formations, and anticipated production from the arctic regions, there is a need to ...
J. Oseh, Norddin M.N.A. Mohd, A. Gbadamosi, Augustine J. Agi, Shafeeg O. Blkoor, I. Ismail, K. Igwilo, A. Igbafe   +7 more
semanticscholar   +1 more source

High performance drilling of T800 CFRP composites by combining ultrasonic vibration and optimized drill structure.

Ultrasonics, 2023
Drilling of high-strength T800 carbon fiber reinforced plastic (CFRP) are widely employed in current aviation industry. Drilling-induced damages frequently occur and affect not only the load carrying capacity of components but also the reliability.
Zhefei Sun, Daxi Geng, Fanxing Meng, Li Zhou, Xinggang Jiang, Deyuan Zhang   +5 more
semanticscholar   +1 more source

A critical review of drilling mud rheological models

, 2021
Drilling mud is a mixture of base fluid and other materials combined in specified amounts for the purpose of cleaning a drilled well. Some of its functions during drilling include but are not limited to the following: cuttings transport, cooling and ...
O. Agwu, J. Akpabio, M. Ekpenyong, Udoinyang G. Inyang, D. Asuquo, Imo J. Eyoh, O. S. Adeoye   +6 more
semanticscholar   +1 more source

A review in nanopolymers for drilling fluids applications

, 2021
Continued economic growth leads to considerably increase energy demand produced from oil and gas. It's fact that conventional hydrocarbon reserves are nowadays at the depletion stage while unconventional reserves exhibits difficulties in drilling process
Kokkoni Karakosta, A. Mitropoulos, G. Kyzas   +2 more
semanticscholar   +1 more source

Delamination formation, evaluation and suppression during drilling of composite laminates: A review

Composite structures, 2019
Fiber reinforced composite laminates have been increasingly replacing conventional materials in various manufacturing sectors due to their extremely superior mechanical properties.
Daxi Geng, Yihang Liu, Zhenyu Shao, Zhenghui Lu, Jun Cai, Xun Li, Xinggang Jiang, Deyuan Zhang   +7 more
semanticscholar   +1 more source