Affiliation:
1. China University of Petroleum
Abstract
A research has been developed for calculation models of allotypic pumping units load against a series of problems, which are ubiquitous in the oil field, such as unreasonable selection of the pumping unit type, low capacity factor of the pumping unit load, lacking of computing method of allotypic pumping unit load, etc. In the research, a calcaulation model of polished rod motion parameters has been firstly established according to the architectural feature of offset pumping units, dual horsehead pump units and tower pumping units. Then the load calculation model of allotypic pumping units were built based on the superposition method of each rod string stress. And after validating the load models in the oil field, the results have been indicated that the models have been in good agreement with the polished rod load. Therefore, the load calculation model of allotypic pumping units in this paper will be of some guidance significance to the selection of the pumping unit type and the stress check of the rod string in the oil field.
Publisher
Trans Tech Publications, Ltd.
Reference5 articles.
1. ZHANG Qi. Theory and Design of Oil Production Engineering [M]. Beijing: China University of Petroleum Press, 2006: 100, 148~152.
2. CEN Xue-qi et al. New Approach for Designing of Compound Fiberglass-steel Rod String for Deep Lifting of Wells [J]. Oil Field Equipment, 2012, 41(9): 28~32.
3. Gibbs S G. Predicting the Behavior of Sucker-Rod Pumping Systems. Journal of Petroleum Technology, 1963, 15(7): 769-788.
4. Gibbs S G. A General Method for Predicting Rod Pumping System Performance. SPE Annual Fall Technical Conference and Exhibition, Denver, 1977: SPE 6850-MS.
5. Gibbs S G. A Review of Methods for Design and Analysis of Rod Pumping Installations. Journal of Petroleum Technology, 1982, 34(12): 2931-2940.