Results 21 to 30 of about 522 (199)

Extension Limit of a Straight-Swirling Mixed Jet Bit and Its Influential Factors in Radial Jet Drilling

open access: yesGeofluids, 2022
Radial jet drilling (RJD) is applied to low-permeability and unconventional natural gas. A self-propelled bit chiefly affects the borehole length and drilling efficiency.
Peng Du, Weikang Xia, Chaoxiong Yu
doaj   +2 more sources

Theoretical and experimental study of the pulling force of jet bits in radial drilling technology [PDF]

open access: yesPetroleum Science, 2009
Radial drilling technology, of which the jet bit is the key device, is a research focus in the field of oil drilling and production. This paper establishes mechanical equations for jet bits and analyzes the hydroseal of backward jets in bottom holes. Meanwhile this paper establishes a mechanical equation for a high pressure hose and analyzes the axial ...
Zhongwei Huang   +2 more
exaly   +2 more sources

Application of Machine Learning Algorithms to Predict the Effectiveness of Radial Jet Drilling Technology in Various Geological Conditions

open access: yesApplied Sciences, 2021
This study presents a methodological approach to forecasting the efficiency of radial drilling technology under various geological and physical conditions.
Aleksandr Kochnev   +4 more
doaj   +3 more sources

Review of Radial Jet Drilling and the key issues to be applied in new geo-energy exploitation

open access: yesEnergy Procedia, 2019
Abstract With the development of global economy and industry, reducing the development cost of oil and gas resources, and seeking the relationship between the oil industry and the new geo-energy industry, is becoming a tendency of the oil industry in the next decades.
Zhongwei Huang
exaly   +2 more sources

Study on Energy Conversion Efficiency and Structure Optimization of the Multorifices Nozzle for Radial Jet Drilling

open access: yesGeofluids, 2023
Underground gas storage (UGS) is a crucial method for mitigating seasonal fluctuations in natural gas consumption. However, in China, UGS is primarily achieved through the conversion of abandoned gas reservoirs with limited storage capacity.
Famu Huang   +8 more
doaj   +2 more sources

Radial Jet Drilling (RJD) Laterals in Fractured Geothermal Reservoirs [PDF]

open access: yesProceedings, 2018
Summary The effect of RDJ laterals on the productivity of a naturally fractured geothermal system has been investigated in this study. A doublet system in a reservoir of 3 × 3 × 0.1 km. with two sets of natural fractures has been the object for the study.
Grandahl, M.   +3 more
openaire   +1 more source

Detached eddy simulation on the structure of swirling jet flow field

open access: yesPetroleum Exploration and Development, 2022
The improved delayed detached eddy simulation method with shear stress transport model was used to analyze the evolution of vortex structure, velocity and pressure fields of swirling jet.
Jianxiang CHEN   +6 more
doaj   +1 more source

Visualization and investigation of the erosion process for natural gas hydrate using water jet through experiments and simulation

open access: yesEnergy Reports, 2022
Natural Gas Hydrate (NGH) and Hydrate-bearing Sediments (HBS) are emerging as an important potential energy resource. Radial Jet Drilling (RJD) technology, turning sharply in the casing and drilling laterals by using water jet, is a valid approach to ...
Yiqun Zhang   +8 more
doaj   +1 more source

A method to optimize the length of flexible hose of the radial jet drilling technology [PDF]

open access: yesJournal of Petroleum Exploration and Production Technology, 2021
AbstractRadial jet drilling (RJD) technology has been applied to enhance the recovery of difficult-to-produce reserves by multiple horizontal micro-holes. The micro-hole length drilled by high-pressure water jets is of vital importance for the oil and gas recovery effect and is usually tens of meters long for applications in maturing oil fields in ...
Zhifang Hu   +5 more
openaire   +1 more source

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