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Technical Brief

Numerical and Experimental Investigation on Flow Capacity and Erosion Wear of Blooey Line in Gas Drilling

[+] Author and Article Information
Zhang Ying

State Key Laboratory of Oil and
Gas Reservoir Geology and Exploitation,
Southwest Petroleum University,
Chengdu 610500, Sichuan, China
e-mail: hello_913@126.com

Lian Zhanghua

State Key Laboratory of Oil and
Gas Reservoir Geology and Exploitation,
Southwest Petroleum University,
Chengdu 610500, Sichuan, China
e-mail: cwctlzh@swpu.edu.cn

Gasser F. Abdelal

School of Mechanical and Aerospace Engineering,
Queen's University,
Belfast BT71NN, UK
e-mail: g.abdelal@qub.ac.uk

Lin Tiejun

State Key Laboratory of Oil and
Gas Reservoir Geology and Exploitation,
Southwest Petroleum University,
Chengdu 610500, Sichuan, China
e-mail: cwctltj@swpu.edu.cn

1Corresponding author.

Contributed by the Petroleum Division of ASME for publication in the JOURNAL OF ENERGY RESOURCES TECHNOLOGY. Manuscript received April 13, 2017; final manuscript received November 1, 2017; published online November 28, 2017. Assoc. Editor: Arash Dahi Taleghani.

J. Energy Resour. Technol 140(5), 054501 (Nov 28, 2017) (6 pages) Paper No: JERT-17-1162; doi: 10.1115/1.4038465 History: Received April 13, 2017; Revised November 01, 2017

Blooey line is a discharge pipe, used to conduct gas to keep drilling rock dust and cuttings away from the drilling rig, reducing the fire hazard and transporting the cuttings to a suitable distance from the well. In this paper, the blooey line's flow capacity and erosion mechanism have been investigated by numerical and experimental method. The model of blooey line, which is commonly used in Sichuan district, China, is established by using a computational fluid dynamics (CFD) method. And, the distribution of pressure field and velocity field in the blooey line are investigated by the CFD model. And, the effect of gas flow rate on impact force and erosion is also discussed. Compared with the simulation results, an experimental apparatus of the blooey line has been conducted under the mechanical similarity principle. The impact force and pressure on the elbows are measured under different gas flow rates. The numerical simulation and experimental method proposed in this paper can provide a reference for layout optimization and flow capacity calculation of blooey line in gas drilling.

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References

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Figures

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Fig. 1

CFD model of blooey line with T-shape elbows

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Fig. 2

Pressure distribution at the gas flow rate of 20 × 104 m3/d

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Fig. 3

Pressure distribution along blooey line at different flow rate

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Fig. 4

Velocity distribution in blooey line and 1# elbow at flow rate of 20 × 104 m3/d

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Fig. 5

Erosion rate at gas flow rate of 200 × 104 m3/d

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Fig. 6

The relation of gas flow rate and failure time

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Fig. 7

Placement of different sensors and valves

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Fig. 8

Layout of experimental blooey line

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Fig. 9

Pressure of elbows under different gas flow rate: (a) 8.1 m3/min, (b) 10.8 m3/min, (c) 13.2 m3/min, and (d) 16.2 m3/min

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Fig. 10

Impact force of elbows under different gas flow rate: (a) 8.1 m3/min, (b) 10.8 m3/min, (c) 13.2 m3/min, and (d) 16.2 m3/min

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Fig. 11

Comparison of experimental results and simulation results: (a) pressure and (b) impact force

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