Workover String Mechanical Model and Calculation of Slanted and Horizontal Well

Hanqiao  Jiang; Bingguo  Du

doi:10.4236/jamp.2015.35066

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JAMP Vol.3 No.5 , May 2015

Workover String Mechanical Model and Calculation of Slanted and Horizontal Well

Bingguo Du^1,2^*, Hanqiao Jiang¹

Abstract: Force analysis and calculation of workover string in the slanted and horizontal well are the basis of designing and checking string strength, selecting tools and determining operation parameters, which determine the operation safety and success of engineering accidence treatment. In this paper, by comprehensive consideration of wellbore structure, string assembly, string load and workover operation conditions, the workover string mechanical model has been built under three kinds of working states of lifting, lowering and rotating. The downhole string mechanics has been analyzed and calculated. By field verification, the string assembly, tool selection and operation parameter optimization can be achieved, which can improve the safety and success rates of workover engineering accident treatment.

Keywords: Slanted Well, Horizontal Well, Workover String, Mechanics Model, Torque, Accident Treatment

Cite this paper: Du, B. and Jiang, H. (2015) Workover String Mechanical Model and Calculation of Slanted and Horizontal Well. Journal of Applied Mathematics and Physics, 3, 537-544. doi: 10.4236/jamp.2015.35066.

References

[1] Sui, M.C., Meng, K.L. and Du, L. (1999) Analysis of Friction on Drill String in Horizontal Drilling. China Petroleum Machinery, 27, 5-8.

[2] Dou, Y.H. and Zhang, F.X. (2007) Mechanical Analysis of Well Testing Down-Hole String in Deep Well with HTHP and Its Application. Drilling & Production Technology, 30, 17-20.

[3] Song, X.H. and Du, H.Z. (2006) Study on Deep-Well Fracturing Strings. China Petroleum Machinery, 34, 72-74.

[4] Liu, Z.G. (1994) Analysis on the Downhole Stress of Slip Supported Packer. Oil Drilling & Production Technology, 16, 53-59.

[5] Sheng, L.M. (2005) Tubing String Mechanics Analysis and Optimizing Design. Chengdu.

[6] Ding, P. and Yan, X.Z. (2005) Force Analysis of High Pressure Water Injection String. Petroleum Drilling Techniques, 33, 47-50.

[7] Fisher, F.J. (1966) Analysis of Drilling String in Curved Bored Holes. SPE5071.

[8] Mitchell, R.F. (1986) Frictional Forces in Helical Buckling of Tubing. SPE13064.

[9] Salites, J. (1994) Experimental Study and Mathematical Modeling of Helical Buckling of Tubular in Inclined Well Bores. The University of Tulsa, Tulsa.