Results 71 to 80 of about 2,300 (225)

Методи визначення ефективних керувальних дій для автоматизації процесу керування відпрацюванням доліт [PDF]

, 2012
Розглядаються теоретичні і прикладні аспекти автоматизації процесу керування відпрацюванням бурових доліт нового покоління – шарошкових і типу PDC.
Чигур, Л.Я.
core  

An Experimental Study on the Impacts of Using Multiple PDC Cutters on Rock Cutting Process [PDF]

, 2019
The ultimate goal in drilling in oil and gas applications is to improve the rate of penetration (ROP) and one important factor that affects the ROP enhancement is Drill Bit.
Sheikhrezaei, Kian
core   +2 more sources

Real‐time lithology identification while drilling based on drill cuttings image analysis with ensemble learning

Deep Underground Science and Engineering, EarlyView.
A lithology identification while drilling method was developed, integrating an automated cuttings sampling system, a smart drilling rig, and an ensemble learning model. Underground trials achieved 97.42% accuracy in real‐time identification of cuttings lithology and composition, enhancing hazard management and supporting unmanned drilling technology in
Kun Li, Ting Ren, Ningping Yao, Jon Roberts, Haitao Song, Zhongbei Li, Xueqiu He, Liang Zhao   +7 more
wiley   +1 more source

Research on Precise Identification of Rock Strength Based on Bolt Drilling Parameters

Energy Science &Engineering, EarlyView.
Drilling detection test platform. ABSTRACT During roadway excavation, the presence of weak interlayers and fractured rock masses significantly affects roof stability. To achieve timely and effective roadway support, it is crucial to identify and predict different rock types based on drilling signals from roof bolters.
Qiang Zhu, Sheng Biao Wang, Da Jiang Wen, Chong‐Yu Song, Kang Zhou   +4 more
wiley   +1 more source

Grading Method for PDC Cutter Wear Based on Improved HRNet and Ellipse Fitting

Shiyou jixie
The current PDC cutter wear grading has problems of low efficiency， poor standardization and insufficient accuracy. This paper presents a wear grading method based on improved HRNet and ellipse fitting. First， the contour of the PDC cutter was extracted.
Cheng Zhanbo, Xiong Ling, Ding Xin, Chen Gang, Ye Daohui, Li Shufan   +5 more
doaj   +1 more source

Diseño y optimizacion de la perforacion horizontal en las secciones 8 ½” y 6 ⅛” con el uso de brocas smith international [PDF]

, 2012
OBJETIVO GENERAL: Establecer el diseño tipo para las secciones 8 ½ y 6 ⅛ con brocas de Diamante Policristalino Compacto (PDC) y de Inserto de Carburo de Tungsteno (TCI) para la perforación horizontal de los pozos A, del Bloque 16.
Rosero Muñoz, Fernando René, Toscano Freire, Jimy Napoleón   +1 more
core  

Collaborative futuring with and by makers [PDF]

, 2014
Maker spaces and maker activities offering access to low-cost digital fabrication equipment are rapidly proliferating, evolving phenomena at the interface of lay and professional design.
Helminen, Pia, Hyysalo, Sampsa, Kohtala, Cindy, Miettinen, Virve, Muurinen, Lotta, Mäkinen, Samuli   +5 more
core   +1 more source

Uncoupling TGFβ1 signalling from collagen protein synthesis in Dupuytren's disease

The Journal of Pathology, EarlyView.
Abstract Dupuytren's disease is a fibroproliferative disorder of the palmer fascia (PF) characterised by flexion contractures in the hand. Dupuytren's disease can be treated surgically, but disease recurrence rates are high, potentially due to continual production of matrisomal proteins.
Gabriella Cooper, Jade A Gumbs, Sahem Alkharabsheh, Katie J Lee, Alan Carter, Hannah Coleman, Niamh S O'Heneghan‐Yates, Rama Ijaz, Emma Beamish, Lisa A Menezes, Triantafillos Liloglou, Peter D Clegg, Elizabeth G. Canty‐Laird   +12 more
wiley   +1 more source

Finite element modelling of rock mass cutting by cutters for PDC drill bits

Petroleum Exploration and Development, 2015
A finite element model of the process of polycrystalline diamond compact (PDC) drill bit cutters cutting rocks was built, and the rock linear and circular cutting processes for different shapes of PDC drill bit cutters were simulated.
T O Pryhorovska, S S Chaplinskiy, I O Kudriavtsev   +2 more
doaj   +1 more source

MXene 3D‐AJP: Three‐Dimensional Well‐Oriented Freeform Networks of 2D MXene Nanosheets via Aerosol‐Based 3D Printing

Small, EarlyView.
This study presents an additive‐free aerosol jet 3D printing technique for assembling 2D MXene nanosheets into complex, customizable, high‐aspect‐ratio 3D microarchitectures without binders. By leveraging real‐time ink thickening, the authors also fabricate 3D microsupercapacitors with interdigitated electrodes that holds breakthrough device areal ...
Chunshan Hu, Bin Yuan, Sanjida Jahan, Md. Azahar Ali, Rahul Panat   +4 more
wiley   +1 more source