Experimental Evaluation of the Lateral Contact Force in Horizontal Wells
Author:
Martinez Alexander1, Miska Stefan1, Kuru Ergun1, Sorem James2
Affiliation:
1. University of Tulsa, TUDRP, Tulsa, OK 74104 2. University of Tulsa, ME, Tulsa, OK 74104
Abstract
In horizontal and extended reach drilling, a large frictional drag may occur. If the pipe buckles laterally or into a helical shape, additional lateral contact force, LCF, is developed between the pipe and the wellbore wall, increasing the drag force. This paper presents the results of an experimental study of the lateral contact force between the drill pipe and the wellbore wall, for helical pipe configuration. Comparison of the experimental results with the current analytical models is also presented. A horizontal well was simulated using a 2-in-dia hole, 86-ft long, and three different sizes of pipe. Two different techniques were used to measure the lateral contact force. Results from both techniques seem to be in good agreement. The comparison with the current analytical models shows that higher values are predicted. The results will find application in directional drilling, horizontal drilling, and coiled tubing operations. [S0195-0738(00)00603-8]
Publisher
ASME International
Subject
Geochemistry and Petrology,Mechanical Engineering,Energy Engineering and Power Technology,Fuel Technology,Renewable Energy, Sustainability and the Environment
Reference10 articles.
1. Mitchell, R. F., 1982, “Buckling Behavior of Well Tubing: The Packer Effect,” Soc. Pet. Eng. J., Oct., pp. 616–624. 2. Mitchell, R. F., 1984, “Frictional Forces in Helical Buckling of Tubing,” Proc., SPE 59th Annual Technical Conference and Exhibition, SPE 13064, Houston, TX. Sept. 3. Mitchell, R. F., 1986, “Simple Frictional Forces in Helical Buckling of Tubing,” SPE Drilling Engineering, Dec., pp. 457–465. 4. Sorenson, K. G., 1984, “Post Buckling Behavior of a Circular Rod Constrained within a Circular Cylinder,” Ph.D. thesis, Rice University, Houston, TX. 5. Chen, Y. C., and Cheatham, J. B., 1990, “Well Contact on Hellically Buckled Tubulars in Inclined Wells,” ASME J. Energy Resour. Technol., 112, June, pp. 142–144.
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