Results 241 to 250 of about 1,204 (263)

Structure Design of and Numerical Simulation on an Annular Reverse Circulation Drill Bit

Applied Mechanics and Materials, 2015
The reverse circulation drilling technology of hollow through DTH air hammer is a set of efficient coring with DTH air hammer, full-hole reverse circulation with drilling fluids, and continuous coring without power lack. It been successfully applied in mineral resources exploration, water well drilling, infrastructure construction and other fields.
Jin Song Wang, Pin Lu Cao, Kun Yin
openaire   +1 more source

Integrated Multifont Geophysics for Risk Reduction in Reverse Circulation Drilling

19th Congress of the Brazilian Geophysical Society - Proceedings
As campanhas de sondagem geológica são etapas de alto custo na exploração mineral, e a sondagem de circulação reversa (RC) surge como uma alternativa mais eficiente e econômica em relação à sondagem diamantada. No entanto, sua aplicação é limitada pela presença de água subterrânea, que compromete a eficiência e recuperação de amostras.
Raphael Prieto, Moara Matos, Divanir Junior, Thiago Mendes, Wendel Santolin, Rodrigo Mabub, Marco Castoldi   +6 more
openaire   +1 more source

Digitalization in Reverse Circulation Drill Rigs

Deep Foundations Institute 50th Annual Conference Proceedings
The integration of digital technologies into reverse circulation drilling (RCD) rigs represents a pivotal advancement in the foundation drilling industry, facilitating semi-automated operations with potential upgrades for full automation. This paper discusses the enhancements in efficiency and safety achieved through these technological upgrades ...
openaire   +1 more source

Applications of Dual‐Wall Reverse‐Circulation Drilling in Ground Water Exploration and Monitoring

Groundwater Monitoring & Remediation, 1989
Abstract Dual‐wall reverse‐circulation drilling uses flush‐threaded double‐wall drill pipe and high‐pressure air to provide continuous return of formation and water samples. Cuttings and formation waters are not contaminated with drilling additives or mixed with other borehole material.
M. Fred Strauss, Steve L. Story, Norman E. Mehlhorn   +2 more
openaire   +1 more source

Metode Reverse Circulation Drilling Pada “Approach Bridge” Jembatan Suramadu

JURNAL TEKNIK SIPIL
Pemilihan metode pengeboran yang tepat merupakan hal yang sangat penting terutama pada proyek proyek offshore (dikerjakan diatas sungai ataupun laut) yang umumnya mempunyai panjang bor yang dalam serta diameter yang besar. Salah satu metode pengeboran yang ada selain menggunakan “Kelly bar system” yang biasa digunakan pada pengeboran di darat, ada juga
Juse Roejanto, Herol Herol
openaire   +1 more source

Direct simulations of bedrock core and cuttings transport phenomena in reverse circulation drilling

Physics of Fluids
Polar drilling is essential for obtaining ice and bedrock samples, providing critical insights into climate and geological history. The reverse circulation drilling method, utilizing a dual-wall drill pipe, presents a stable and efficient strategy.
Ni Sun, Ting Ye, Rusheng Wang
openaire   +1 more source

Percussion‐Reverse Circulation Water‐Well Drilling System Designed and Developed in Italy

Groundwater, 1964
Abstract This paper describes the new percussion‐reverse circulation system, designed and developed in Italy for water‐well drilling. In a special reverse circulation rig, the percussion bit, consisting of a tube with external welded blades, slides up and down on the outside of the hollow drill pipes, while the hollow drill pipes ...
openaire   +1 more source

Transportation of cuttings through drill rods during reverse-circulation reaming

Tunnelling and Underground Space Technology, 2022
Cong Zeng, Yang Chen, Xuefeng Yan
openaire   +1 more source

Analytical and Numerical Simulation of Asymmetric Converging Flow of Gas Under Drill Bits in Reverse Circulation Gas Drilling

Journal of Energy Resources Technology, Transactions of the ASME, 2022
Xu Yang, Boyun Guo, Guo Boyun
exaly  

Investigation on the cuttings carrying capacity of a novel retractable drill bit used in casing while drilling with air reverse circulation

Journal of Petroleum Science and Engineering, 2022
Pinlu Cao, Guoqing Cui, Bo Qi
exaly