Results 71 to 80 of about 945,774 (394)

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

Natural 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, Yongjin Yu, Shuoqiong Liu, Ming Xu, Lianjiang Li, Jiyun Shen   +5 more
doaj   +1 more source

Advancing Wildfire‐Retardant Materials: Engineering Strategies for Direct and Indirect Suppression

Advanced Engineering Materials, EarlyView.
Here, the evolution, ecological impact, and performance of current fire‐retardant materials and suppression strategies are reviewed, offering an engineering perspective to address existing challenges and propose pathways for the development of more effective, scalable, and sustainable solutions to meet the demands of a changing climate. Wildfires cause
Changxin Dong, Samya Sen, Athena Kolli, Stewart G. Wilson, Eric Andrew Appel   +4 more
wiley   +1 more source

Study on the migration mechanism of heterogeneous cuttings in long-reach horizontal wells

Scientific Reports
This study focuses on the transportation of non-uniform cuttings in the drilling process of long-reach horizontal wells, conducting a comprehensive theoretical analysis and experimental investigation.
Chunhua Wang, Shibin Li, Yue Qi, Zhenhua Zhang, Dianfu Zheng, Hui Zhong, Changhao Wang   +6 more
doaj   +1 more source

Application of fine managed pressure drilling technique in complex wells with both blowout and lost circulation risks

Natural Gas Industry B, 2015
Fractured carbonate reservoirs are susceptible to blowout and lost circulation during drilling, which not only restricts drilling speed, but also poses big threat to well control.
Ling Yan, Huisheng Wu, Yan Yan
doaj   +1 more source

Residual Stress States in Microstructurally Graded PBF–LB/M Austenitic Steel Components

Advanced Engineering Materials, EarlyView.
This study examines microstructurally graded 316L rectangular tube profiles fabricated via PBF–LB/M using a dual‐laser system. A 1 kW top‐hat and a 400 W Gaussian laser create distinct grain sizes and crystallographic texture. Mechanical properties are linked to microstructural evolution driven by processing conditions.
Nico Möller, Florian Loebich, Thomas Wegener, Julia Richter, Jens Gibmeier, Thomas Niendorf   +5 more
wiley   +1 more source

New Developments in the Field of Production and Application of Multi‐Material Wire Arc Additive Manufacturing Components: A Review

Advanced Engineering Materials, EarlyView.
The utilization of direct energy deposition (DED)‐arc additive manufacturing processes in industrial applications is increasing, and these processes have the potential for multi‐material applications. This work provides a overview of the state of research in DED‐arc made functional graded structures, to establish a link to potential industrial ...
Kai Treutler, Volker Wesling
wiley   +1 more source

Countermeasures to Decrease Water Cut and Increase Oil Recovery from High Water Cut, Narrow-Channel Reservoirs in Bohai Sea

Geofluids, 2021
Most multilayer sandstone reservoirs in the Bohai Sea have already entered the middle or high water cut production stage with large amounts of remaining oil being scattered distributed. Therefore, there is an urgent need to find a suitable countermeasure
Gaocheng Feng, Yuhui Zhou, Weiying Yao, Lingtong Liu, Zhao Feng, Yanjun Yi, Yi Feng   +6 more
doaj   +1 more source

Nano-Based Drilling Fluids: A Review

, 2017
Nanomaterials are engineered materials with at least one dimension in the range of 1–100 nm. Nanofluids—nanoscale colloidal suspensions containing various nanomaterials—have distinctive properties and offer unprecedented potential for various sectors ...
Z. Vryzas, V. Kelessidis
semanticscholar   +1 more source

Testing of Sealing Elements for FIB Apparatus Designed to Liquidate Open Eruption by Drilling Tools [PDF]

, 2018
Petroleum and natural gas still have their place among the most important resources in many industrial areas. Their global consumption influences an increasing demand on the quality of drilling works and the efficiency ...
Bujok, Petr, Klempa, Martin, Porzer, Michal, Ryba, Jakub, Šancer, Jindřich   +4 more
core  

Abrasive water jet drilling of advanced sustainable bio-fibre-reinforced polymer/hybrid composites : a comprehensive analysis of machining-induced damage responses [PDF]

, 2018
This paper aims at investigating the effects of variable traverse speeds on machining-induced damage of fibre-reinforced composites, using the abrasive water jet (AWJ) drilling.
A Alberdi, A Alberdi, A Hascalik, A Hascalik, A Hejjaji, AA Shaikh, B KC, DF Liu, DJ McGill, DJ Thomas, DJ Thomas, E Oho, FA Almansour, FL Chen, G Fowler, H Heidarya, H Ho-Cheng, H Hocheng, HN Dhakal, HN Dhakal, Hom Nath Dhakal, I Shyha, J Flynn, J Montesano, James R. Smith, JC Crocker, JK Patel, K Phapale, M Ramulu, Marco Paggi, MM Thwe, MMW Irina, N Ramesha, NE Hajj, PD Unde, R Selvam, S Kalirasu, S Nunna, Saheed Olalekan Ojo, Sikiru Oluwarotimi Ismail, SO Ismail, SO Ismail, SO Ismail, SP Jani, YW Seo   +44 more
core   +3 more sources