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

Jin Song Wang; Pin Lu Cao; Kun Yin

doi:10.4028/www.scientific.net/AMM.733.558

Paper Titles

The Characteristic Research of Inertial Mechanism under the Condition of No Friction Contact
p.539

Influence of De-Swirl Angle on the Flow and Heat Transfer in Rotor-Stator Cavity System
p.544

The Finite Element Analysis and Optimization of the Hood Based on Hyperworks
p.548

Numerical Investigation of Pneumatic Regulating on Low-Pressure Guide Vane
p.554

Structure Design of and Numerical Simulation on an Annular Reverse Circulation Drill Bit
p.558

An Experimental Flow Study of the Pitching Oscillating Airfoil Using the PIV Technique
p.562

Temperature Field Analysis of LNG Tank under Ultra-Low Temperature Based on Finite Element Method
p.566

The Portable Unit for the Online Measurement and Fitting of Large Curved Surface
p.570

Improvement of Engine Coolant Ultrasonic Cavitation Apparatus
p.574

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 733Structure Design of and Numerical Simulation on an...

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

Abstract:

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. We designed a new type of annular reverse circulation drilling bit in order to prevent drilling accident when drilling in complex strata, such as breakage and leakage. In this paper, the computational fluid dynamics (CFD) code, FLUENT, is employed to simulate the flow phenomena of reverse circulation drill bit. Numerical simulation results show that the values of negative pressure of new type annular reverse circulation drill bit which formed in the center channel and the bottom of hole were larger than those of the normal bit. Under the same conditions, the suction quantity from annulus of annular drilling bit is 1.4 times to the normal one.

You might also be interested in these eBooks

Engineering Decisions for Industrial Development

View Preview

Info:

Periodical:

Applied Mechanics and Materials (Volume 733)

Pages:

558-561

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.733.558

Citation:

Cite this paper

Online since:

February 2015

Authors:

Jin Song Wang, Pin Lu Cao*, Kun Yin

Keywords:

Annular Reverse Circulation Drilling Bit, Normal Inner Nozzle Drilling Bit, Reverse Circulation Drilling

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

* - Corresponding Author

References

[1] Jianlin Liu. Researches on the key technologies of hollow-through DTH used in gas drilling [D]. Jilin University, (2009).

Google Scholar

[2] Kun Yin, Maosen Wang, Jianming Peng. Percussive rotary drilling [M]. Beijing: Geological Publishing House, (2010).

Google Scholar

[3] Liming Fan. Research on reverse circulation mechanism of hollow-through DTH hammer and bit structure optimization [D]. Jilin University, (2011).

Google Scholar

[4] Jinsong Wang, Pinku Cao, Kun Yin. The present situation and development trend of rapid drilling technology in coal mine emergency rescue[J]. Advanced Materials Research, 2014 (998- 999) pp.499-502.

DOI: 10.4028/www.scientific.net/amr.998-999.499

Google Scholar

[5] Zhiqiang Zhao. Experimental Research on Key Technologies of Reverse Circulation Coring with Hollow-through DTH Air Hammer [D]. Jilin University, (2013).

Google Scholar