Optimization of Acoustic Communication Along the Drillstring

PDF(1595 KB)

Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (18) : 161-165.

Zhou Jing, Qiu Bin, Ni Wenlong, Shang Haiyan

Author information +

History +

Abstract

In order to develop a communication system that uses extensional stress waves in hollow steel drill pipe to carry encoded data between the bottom of well and the operator, it is necessary to know optimal signal transmission. We established an aperiodic drill-string assembly model to characterize the downhole information transmission and analyzed the characteristics of combinations of eight drill pipes of different length and different cross-sectional area by applying the reflectionless acoustic transmission model(RATO). The results showed that the ascent-then-descend(ATD) and the descend-then- ascent(DTA) pipe arrangement has more efficient energy transfer than other pipe arrangement for different lengths of bottom hole assembly(BHA); The DTA pipe arrangement has more efficient energy transfer than other pipe arrangement for different cross-sectional area of BHA. The analysis of the RATO of drill tools and the simulation of optimal transmission of the acoustic drilling string channel provide both scientific theoretical and technical foundation for the research of the acoustic telemetry.

Key words

Acoustic telemetry / Data transmission / Channel properties / Acoustic channel

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

Zhou Jing, Qiu Bin, Ni Wenlong, Shang Haiyan. Optimization of Acoustic Communication Along the Drillstring[J]. Journal of Vibration and Shock, 2015, 34(18): 161-165

References

[1] M. S. Beattie and A. H. Abdnllah. Mud pulse telemetry[P]. U. S. Patent No. 6421298, 1999.
[2] N. C. MacLeod. Apparatus and method for down-hole EM telemetry while drilling[P]. U. S. Patent No. 4739325, 1986.
[3] Arps J J. Continuous logging while drilling-a practical reality[C]. SPE Annual Fall Meeting, New Orleans, La. 1963 -10 .
[4] Louis Soulier. Method and system for the transmission of informations by electromagnetic wave. U.S.PatentNo.6628206. 2003.
[5] Anonymous. Electromagnetic MWD telemetry system sets depth record offshore[J]. Oil& Gas Journal. 2001, 100 (36): 46- 47.
[6] R. O. Rowlands, F. G. Quinn. Transmission Rates for a Binary Data Acoustic Telemetry System[J]. 1966, 39( 6). 1259-1259.
[7] L. Gao, W. Gardner, C. Robbins. Limits on data communication along the drill string using acoustic waves[C].2005, SPE95490
[8] 李成，丁天怀.信道阻尼边界对井下钻杆声传输的影响[J].振动与冲击. 2006. 25 (6): 7-20.
Li Cheng, Ding Tianhuai. Effect of damping boundary conditions on acoustic transmission of drill strings[J]. Journal of vibration and shock. 2006. 25 (6): 7-20.
[9] 赵国山，管志川，都振川.井下钻柱信道的声传播特性[J]. 石油学报.2013. 34 (1):151-156.
Zhao Guoshan, Guan Zhichuan, Dou Zhenzhuan. Acoustical propagation characteristics of the communication channel of downhole drill string[J]. Acta Petrolei Sinica. 2013.1(34): 151-156.
[10] 李成，井中武，刘钊等.钻柱信道内隔声体结构建模与仿真分析[J].振动与冲击. 2013.32(22): 53-56.
Li Cheng, Jing Zhongwu, Liu Zhao. Modeling and simulation analysis for an acoustic isolation structure in a drill string channel[J]. Journal of vibration and shock. 2013.32(22): 53-56.
[11] 李成,丁天怀,陈恳.周期性管结构信道的声传输方法分析[J].振动与冲击. 2009.28 (2)：12-15.
[12] 李成,丁天怀. 不连续边界因素对周期管结构声传输特性的影[J].振动与冲击.2006, 25(3):172-175.
Li Cheng, Ding Tianhuai. Influence of Discontinuous Boundaries on Acoustic Transmission in Periodic Cascade with Application to Drill Pipes[J]. Journal of vibration and shock. 2006, 25(3):172-175.
[13] D. Drumheller, Acoustical properties of drill strings. Sandia Report, vol. Sand88-0502, 1988.
[14] M. Memarzadeh. Optimal Borehole Communication Using Multicarrier Modulation[D]. Thesis, Rice University, 2007.
[15] 李成，井中武，刘钊等.钻柱信道内双声接收器的回波抑制方法分析[J]. 振动与冲击. 2013. 32 (4): 66-70.
Li Cheng, Jing Zhongwu, Liu Zhao. Modeling and simulation analysis for an acoustic isolation structure in a drill string channel[J]. Journal of vibration and shock. 2013. 32 (4): 66-70.
[16] 李成,刘钊,丁天怀.钻柱声传输信号多载波调制激励分析[J].振动与冲击. 2014.33(3): 1-4.
Li Cheng, Liu Zhao, Ding Tianhuai. Multi carrier modulation excitation analysis for acoustic transmissions signal in drill string[J]. Journal of vibration and shock. 2014.33(3): 1-4.