Study on Pumping Perforation Technique for Horizontal Wells

Abstract:

Aiming at the deficiencies of tubing-conveyed oriented perforating technology for horizontal well, a pumping perforation technology in horizontal well has been developed. Pumping perforation technology process is a perforation process transferring the perforating gun string into perforation section of the horizontal well with pumping fluid, and then completing the perforation while perforating bullets exploding after powering on, and finally towing back the perforating gun to the ground with cable. It is of the advantages such as simple perforation column, simple and convenient process and the shorter operating time. Perforating gun string is acted on by the impact, gravity and buoyancy of pumping liquid during moving in the horizontal section. Based on the theory of metal friction and the hydraulics principles, the calculation model of the critical injection rate (namely pumping displacement ) in the horizontal section is established by considering the effect of the composition of the gun string, buoyancy, friction coefficient, heavy guns, gun ramps, pumping fluid density, and calculated the impact of impact, effects of assembly components of gun string, pumping-fluid buoyancy, frictional coefficient, weight of gun, angle of gun-string, pumping-fluid density and computing method of impacting force. Field applications show that the calculation model established can meet the construction needs.

• Periodical: Advanced Materials Research (Volumes 524-527)
• Pages: 1598-1601
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.524-527.1598
• Online since: May 2012
• Authors: Guo Ying Jiao, Ping Ting Pei, Hong Li Zhao, Tang Kai, Wang Hai
• Keywords: Horizontal Well, Perforation, Pumping, Pumping Displacement

References

[1] Tang Haijun, Xu Guichun, Duan Zhigang,etc. :Study on Productivity Prediction of Horizontal wells with perforation completion and its application. Oil Drilling & Production Technology. ,Vol. 32(3)(2010),p.27~32.

[2] Lv Bingchuan, Yv donghe, Zhao Jinzhou, etc.: Productivity prediction model study for horizontal wells and extended reach wells after fracturing. Oil and gas well testing. Vol.15(2)(2006) , p.12~13.

[3] Peach S.C., Jensen R E and Robertshaw S. C. :Completion and evaluation of cased horizontal wells. JCPT, Vol.30(5)(1991), p.26~32.

DOI: 10.2118/91-05-01

[4] McSpadden A, Brown P .and Davis T.: Field Validation of 3-Dimensional Drag Model for Tractor and Cable-Conveyed Well Intervention. SPE 71560(2001).

DOI: 10.2118/71560-ms