A Mechanical Model and its Experimental Verification for a Water Injection String in a Highly Deviated Well

Document Type : Research Paper

Authors

1 Laboratories equipped with modern design and simulation of oil and gas, Southwest Petroleum University, Cheng Du Si Chuan 610500, P.R. of China

2 School of Civil and Architecture Engineering, Southwest Petroleum University, Cheng Du Si Chuan 610500, P.R. of China

3 Drilling technology research institute of Jidong oilfield company, Tang Shan He Bei 063000, P.R. of China

Abstract

Water injection strings in highly deviated wells are subjected to complex forces on the string bore. In this work, a mechanical model is developed for these forces and for those on downhole tools. On the basis of this model, and taking account of the characteristics of the string in different working conditions, a temperature field model and a pressure field model are introduced, and a statically indeterminate structural calculation method is adopted. A force tester for highly deviated wells is developed and used in eight tests on strings in the Jidong Nanpu oilfield making a comparison between the measurements from the tests and the results of calculations using the mechanical model indicates that the mechanical model exhibits high computational accuracy, with the errors at the wellhead being no more than 10%, and that the forces on packers calculated from the model are in accordance with those measured in the tests. Thus, the mechanical model developed in this work is suitable for analyzing the forces on water injection strings and downhole tools in highly deviated wells.

Keywords

References

References
Yafeng J., Jiuzheng Y., and Gengcheng Y., “The Research on Multilayer Fine Separated Layer Water Injection Technology in Jiyuan Oil Field,” Science Technology and Engineering, 2012, 18, 4504-4506.
Haiquan W., Xianming S., and Haitao Gen., “Concentric Layered Water Injection Technology Applied in Nanpu High Angle Wells,” China Petroleum Machinery, 2011, 9, 560-566.
Tao X. and Qingyou L., “Analysis of High Angle Well Water Injection Wellbore Pressure Calculation Model,” Petrochemical Industry Application, 2015, 6, 12-15.
Hongwei Z., Jiang L., and Jijunet Y., “Mechanical Analysis on Tubular for Inverse Well Flushing in Deep Deviated Well,” China Petroleum Machinery, 2014, 10, 40-45.
Quanli J., “Mechanics Analysis of Layered Water Injection Packer String,” Dissertation, Xian Petroleum University, 2014.
Baoxia Q., Ceji Q., and Congcong S., “Analysis and Design Research on Layered Water Injection String Mechanics,” China Petroleum and Chemical Industry, 2009, 1, 57-59.
Jingfu D., “Research on Remaining Oil Description and Redeveloping Measures of PI-4 Oil Layer after Polymer Flooding in Nanwu Area,” Dissertation, Northeast Petroleum University, 2013.
Guohua Z., Jiangtao L., and Buhong J., “The Research and Application of New Type of Hollow Point’s Injection Process,” Fault Block Oil and Gas Field, 2007, 4, 80-82.
Junhui W., Lan H., and Jinqian Li., “Research of Oilfield Water Injection Mode,” 2014, 1, 84-88.
Yanping Z., “The Present Situation of the Oil Field Injection Well Zonal Injection Technology and the Development Tendency,” China Petroleum and Chemical Standard and Quality, 2014, 6, 108.
Sheng S. and Jianfu L., “Oilfield Water Flood Technical Inquiry,” China Petroleum and Chemical Industry Standard and Quality, 2013, 20, 177.
Wei C., Xiaohong F., and Guangbing J., “Sea Controlled High Angle Well Liquid Separate Injection Technology,” China Petroleum Machinery, 2009, 11, 78-79.
Lubinski A., Althouse W. S., and Logan J. L., “Helical Buckling of Tubing Sealed in Packers,” Journal of Petroleum Technology, 1962, 14, 655-670.
Lubinski A., “Developments in Petroleum Engineering,” Houston, TX: Gulf Publishing, 1987.
Hammerlindl D. J., “Packer-to-Tubing Forces for Intermediate Packers,” Journal of Petroleum Technology, 1980, 32, 515-527.
Salies J. B., Azar J. J., and Sorem J. R., “Experimental and Mathematical Modeling of Helical Buckling of Tubules in Directional Wellbores,” in Proc. International Petroleum Conference and Exhibition of Mexico, Veracruz, Mexico, 1994, 433-443.
Payne M. L. and Abbassian F., “Advanced Torque and Drag Consideration in Extended-Reach Wells,” Society of Petroleum Engineering, SPE Drilling Completion, 1997, 12(3), 55-62.
Hill T. H. and Chandler R. B., “Field Curves for Critical Buckling Loads in Curving Well bores,” in Proc. IADC/SPE Drilling Conference, 3-6 March, Dallas, TX, 1998, 259-265.
Linqiang Z., “Calculating Model of Torque and Drag in Extended Reach Well,” Fault Block Oil and Gas Field, 2008, 2, 88-91.
Xiaohuaa Z., Yuan G., and Shaohu L., “Feasibility of Casing Entering Curved Part in Horizontal Well,” Oil Field Equipment, 2011, 4, 6-8.
Zuqing H., Xiaorong Z., and Guorong W., “Research for Water Injection String Temperature Field Calculation Model,” Pioneering with Science and Technology Monthly, 2007, 20(6), 178-179.
Journal of Petroleum Science and Technology
Volume 7, Issue 4 - Serial Number 4
November 2017
Pages 91-101

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