The Effects of Borehole Ovality on Bare Hole Horizontal Well Completion String Tripping in Friction

AI Chi, LIU Yu, LI Yuwei

Abstract


Under the effect of non-uniform ground stress, the borehole becomes oval. The deformation regulations and friction calculation in oval borehole has great difference with which in circular borehole. Researching the effect of the ovality of borehole on string tripping in friction is of great significance. In this paper, the string deformation model in oval borehole was established; the maximum displacement changes with different ratios of the major and minor axis and inclination angles were analyzed. The deformation model between two contacting points was established, and the determining method of the new contacting point of multi-packer completion string was proposed. The friction calculating model was established finally.The Hongping 9 well was used as an example to calculate the effect of borehole ovality on the bare hole completion string tripping in friction. By calculating, the friction calculated using the model was in good agreement with the measured value. The friction of completion string is almost zero in vertical section, and in blending and horizontal section the friction is increasing gradually. With the increasing of ovality the friction is increasing. The ovality increases from 1.0 to 1.3, the increasing value of friction is 36.59 kN.
Key words: Borehole ovality; Completion string; Bare hole completion; Friction

Keywords


Borehole ovality; Completion string; Bare hole completion; Friction

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References


[1] Zheng, Y. C., Jiang, L. L., Wang, L. Z., et al. (2012). The Conception and Optimization Design Method of Open Hole Horizontal Well Staged Fracturing. Drilling & Production Technology, 35(5), 55-58.

[2] Zheng, D. C. (2008). Logging Technique for Shallow Horizontal Wells in Jilin Oilfield. Daqing: Daqing Petroleum Institute.

[3] Zhang, Y. A. (2011). Multi-Stage Frac Treatment in Horizontal Wells of Tight Sandstone Gas Reservoirs in the Songliao Basin: A Case History of the Horizontal Well Changshen D2. Natural Gas Industry, 31(06), 123-126.

[4] Yuan, J. P., & Qi, F. Z. (2007). Status Quo and Research Direction of Well Completion Technology in China. Drilling & Production Technology, 30(3), 3-6.

[5] Liu, H., Li, Q., Yin, H., et al. (2011). Segmented Completion String Running Technology of Shallow Heavy Oil Horizontal Well in Xinjiang Oilfield. Petroleum Drilling Techniques, 39(4), 44-47.

[6] Zhu, Z. X., & Li, Y. G. (2011). Horizontal Well Open Hole Staged Fracture Technology Applied in Sulige Gasfield. China Petroleum Machinery, 40(05), 74-77.

[7] Johancsik, C. A., Friesen, D. B., & Dawson, R. (1984). Torque and Drag in Directional wells-prediction and measurement. Journal of Petroleum Technology, 36(6), 987-992.

[8] Ho, H-S. (1998). An Improved Modeling Program for Computing the Torque and Drag in Directional and Deep Wells. SPE Annual Technical Conference and Exhibition, 2-5 October 1988, Houston, Texas.

[9] Liao, H. L., & Ding, G. (2002). Establishment and Primary Confirmation of a Model for Calculating Frictional Drag of Casing Strings in Extended Reach Well. Journal of the University of Petroleum, 26(1), 29-32.

[10] Zhang, Y. A. (2011). Research on Key Problems of Mechanics for Multi-Packers Fracturing Strings Pass Ability in Horizontal Well. Daqing: Northeast Petroleum University.




DOI: http://dx.doi.org/10.3968/j.aped.1925543820130601.1558

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