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6 Results Found

  • Article
  • Open Access
220 Views
18 Pages

Predictive Model on Limit Extension of Horizontal Well Drilling with Riserless Mud Recovery for Gas Hydrates in Offshore Areas

  • Jing Li,
  • Bin Li,
  • Bo Ning,
  • Lujun Wang,
  • Kaixiang Shen,
  • Dongyu Yang,
  • Xiaopeng Yan,
  • Dezhi Qiu,
  • Bin Zhu and
  • Pengxiang Shen
  • + 1 author

Natural gas hydrate is an important emerging strategic resource, but low permeability makes the horizontal well length a key factor limiting productivity. A prediction model for friction torque of deepwater riserless drilling strings was established,...

  • Article
  • Open Access
298 Views
16 Pages

4 June 2026

This study analyzes and explores the influence of multiple physical mechanisms—namely the influences of heat and mass transfer, thermal radiation, and magnetic field effects on the peristaltic transport of a Rabinowitsch-type non-Newtonian flui...

  • Article
  • Open Access
1 Citations
1,656 Views
14 Pages

Influence of Local Gas Sources with Variable Density and Momentum on the Flow of the Medium in the Conduit

  • Bogusław Ptaszyński,
  • Rafał Łuczak,
  • Zbigniew Kuczera and
  • Piotr Życzkowski

11 August 2022

In this article, the analysis of mechanical energy changes in a gas medium flow with stable and variable density was presented. To determine the energy losses, the various sources of momentum and mass were used, which had an influence on air flow thr...

  • Article
  • Open Access
11 Citations
5,018 Views
22 Pages

Design and Parametric Optimization of the High-Speed Pico Waterwheel for Rural Electrification of Pakistan

  • Muhammad Asim,
  • Shoaib Muhammad,
  • Muhammad Amjad,
  • Muhammad Abdullah,
  • M. A. Mujtaba,
  • M. A. Kalam,
  • Mohamed Mousa and
  • Manzoore Elahi M. Soudagar

6 June 2022

This research study presents an approach for analysis of pico hydro waterwheels by both experimental and numerical methods. The purpose of this research is to harness the energy efficiently from flowing water of irrigation channels and other shallow...

  • Article
  • Open Access
42 Citations
5,736 Views
19 Pages

Surveying and High-Resolution Topography of the Ochtiná Aragonite Cave Based on TLS and Digital Photogrammetry

  • Katarína Pukanská,
  • Karol Bartoš,
  • Pavel Bella,
  • Juraj Gašinec,
  • Peter Blistan and
  • Ľudovít Kovanič

4 July 2020

The Ochtiná Aragonite Cave (Slovakia, Central Europe) is a world-famous karst phenomenon of significant geological, geomorphological, and mineralogical values. Its specific origin is determined by particular lithological and hydrogeological co...

  • Article
  • Open Access
19 Citations
4,056 Views
13 Pages

Sustainable Education Starts in the Classroom

  • Maura A. E. Pilotti and
  • Runna Al Ghazo

17 November 2020

Definitions of a sustainable higher education focus on the different factors that are critical to the continued existence of the institution, the people it serves, and the surrounding society. If higher education is assumed to be a conduit for the ac...