Results 51 to 60 of about 1,418 (251)

Integrated design and control technology of liner completion and drilling for horizontal wells

Petroleum Exploration and Development
Aiming at the problems of large load of rotation drive system, low efficiency of torque transmission and high cost for operation and maintenance of liner steering drilling system for the horizontal well, a new method of liner differential rotary drilling
Deli GAO, Baoan XIAN, Yansen BI
doaj   +1 more source

Pre‐Curved Everting Robots With Embedded Steering Intelligence Fabricated by CO2 Laser Welding

Advanced Intelligent Systems, EarlyView.
Design and experimental demonstration of a laser welded growing robot for anatomically guided navigation. The robot follows an aortic arch phantom entering the branchiocephalic branch through steering by design. The figure shows the physical phantom setup, CAD defined weld geometry and full robot eversion.
Brandon Saldarriaga, Panagiotis Kalozoumis, Panagiotis Vartholomeos, Carlo Seneci, Kawal Rhode, Christos Bergeles   +5 more
wiley   +1 more source

Optimization Design Method and Application of Nitrogen Horizontal Well Drilling Technology in Coalbed Methane Reservoirs

Energy Science & Engineering
Due to characteristics such as low permeability, low pressure, low gas saturation, low water content, and high structural stress, Yuwang coalbed methane (CBM) is prone to issues such as well leakage, coal sensitivity to water, and coal fines blockage ...
Hu Jiachen, Tan Zhanglong, Yang Fan, Hao Zhaobing, Yang Qi, Feng Lei, Wang Peng   +6 more
doaj   +1 more source

An Intelligent Microfluidics Enabled by Data‐Driven Deep Learning‐Based Microrobot‐Assisted Flow Manipulation

Advanced Intelligent Systems, EarlyView.
An AI‐enabled micromixing framework is developed by integrating cGAN with Bayesian optimization for predictive control of microrobot‐driven flow manipulation. Through this framework, the spatiotemporal evolution of micromixing is learned directly from experimental images, while rapid identification of optimized microrobot actuation strategies is ...
Dineshkumar Loganathan, Chia‐Yuan Chen
wiley   +1 more source

Operationalizing BioSSbD: A safe‐and‐sustainable‐by‐design framework for biorefineries

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract Biorefineries are central to the transition toward a circular bioeconomy; however, their increasing scale and technological heterogeneity, and the integration of biological, chemical, and thermochemical processes introduce complex challenges related to safety, sustainability, and operational reliability. Existing Safe‐and‐Sustainable‐by‐Design
Fernando Ramonet
wiley   +1 more source

Development of Guidelines for Implementation of Horizontal Directional Drilling

, 2021
While the fundamentals of horizontal directional drilling (HDD) technology are well known, the implementation of HDD involves utilizing a vast range of equipment and installation procedures. This project developed HDD guidance documents to provide the Illinois Department of Transportation with metrics to evaluate a proposed HDD installation.
Youssef Hashash, Omar Baltaji, Guangchao Xing, Yongxi Liang   +3 more
openaire   +2 more sources

Adaptive Genomic Divergence Across Altitudes in Capsella bursa‐pastoris

Biological Diversity, EarlyView.
Genomic divergence was observed between high‐altitude and low‐altitude populations of Capsella bursa‐pastoris in China, consistent with an important role of ecological factors. Candidate adaptive loci associated with enhanced energy metabolism, photoprotection, and growth plasticity under altitudinal stress were identified.
Lu Liu, Jia Li, Xin Liu, Xue‐Jun Ge, Hui‐Run Huang   +4 more
wiley   +1 more source

Theoretical problems of pipe inserting by making use of the method of horizontal directional drilling [PDF]

Acta Montanistica Slovaca, 2008
The technology of pipe laying by making use of the method of horizontal directional drilling with a high-pressure liquid and withbackward laying (hereinafter HDD technology – Horizontal Directional Drilling) has been considerably used in the Czech ...
Jaroslav Raclavský
doaj  

Semi‐analytical solution for the stability of deep vertical shaft considering time‐dependent rock‐structure interaction

Deep Underground Science and Engineering, EarlyView.
A novel cavity contraction solution and multilayer shaft wall model were developed to analyze deep shaft stability, considering rock viscosity, support structures, and water pressure, with successful validation through a Hulusu Coal Mine case study.
Bin Chen, Pinqiang Mo, Zhao Lu, Lianfei Kuang, Qiang Zhang, Abolfazl Eslami   +5 more
wiley   +1 more source

Equipment and technologies for improving the processes of transportation of drilled rock [PDF]

E3S Web of Conferences
In this paper, an analysis of existing equipment for cleaning the bottom of the well from sludge during rotary drilling is carried out to find ways to improve the processes of transporting drilled rock.
Zainagalina Liaisan, Suleimanov Rustem, Zaripova Lilia   +2 more
doaj   +1 more source