The optimal ranges method is a new digital tool for analyzing the efficiency of low-flow wells operation

UDK: 622.276.53
DOI: 10.24887/0028-2448-2022-10-55-59
Key words: electrical submersible pump units, sucker-rod pump units, failure time, pumping rate, statistical data analysis, operating parameter range
Authors: E.O. Timashev (Rosneft Oil Company, RF, Moscow), R.S. Khalfin (RN-BashNIPIneft LLC, RF, Ufa), A.R. Brot (RN-BashNIPIneft LLC, RF, Ufa), M.A. Obihod (RN-BashNIPIneft LLC, RF, Ufa), V.S. Kuleshov (Tyumen State University, RF, Tyumen)

There are various approaches to the choice of the method of artificial oil production, including methods using the analysis of the statistical distribution of events based on digital information of production processes. However, the analysis of information on failures in the operation of downhole pumping equipment indicates that the tasks of choosing an economically feasible method of artificial oil production of low-yield fund remain unresolved in full. This article presents a new approach to the analysis and selection of a method of artificial oil production, the algorithm of which integrates the calculation of individual criteria (operating time to failure, feed ratio, net discounted income, efficiency of ranges, significance of parameters) into a single methodology - the method of optimal ranges adapted for use as a digital tool. The proposed criteria make it possible to compare different operating modes of individual wells, well stock and areas of equipment application. Classification of ranges of operating parameters according to efficiency criteria, with visualization of the results and technical and economic comparison allows you to analyze the scope of application of mechanized mining methods based on field data. The method is illustrated by the example of a low-flow well stock (up to 30 m3/day) of two production companies with constant and periodic modes of operation of downhole rod pump installations. Analysis of the impact of operational parameters on the efficiency criterion of ranges showed that in the group of failures with operating time below the average values for the fund, the average operating time to failure is significantly less than the average operating time for the range. So, for the depth of descent of the sucker-rod pump units in inefficient ranges, the average operating time for a group of failures, with an operating time lower than the operating time for the fund, is less than the operating time in the parameter range by 115 days.

References

1. Medvedev A.V., Povyshenie bezopasnosti i nadezhnosti ekspluatatsii oborudovaniya neftedobychi (Improving the safety and reliability of oil production equipment): thesis of doctor of technical science, Ufa, 2009.

2. Slepchenko S.D., Otsenka nadezhnosti UETsN i ikh otdel'nykh uzlov po rezul'tatam promyslovoy ekspluatatsii (Evaluation of the ESP reliability and their individual nodes according to the exploitation results of oil fields): thesis of candidate of technical science, Perm', 2011.

3. Mel'nichenko V.E., Otsenka vliyaniya osnovnykh tekhnologicheskikh kharakteristik dobyvayushchikh skvazhin na resurs pogruzhnykh elektrotsentrobezhnykh nasosov (Assessment of the impact of the main technological characteristics of producing wells on the resource of submersible electric centrifugal pumps): thesis of candidate of technical science, Moscow, 2017.

4. Kuchumov R.Ya., Uzbekov R.B., Optimizatsiya glubinnonasosnoy neftedobychi v usloviyakh Bashkirii (Optimization of bottomhole pumping in the conditions of Bashkiria), Ufa: Bashkirskoe knizhnoe izdatelstvo Publ., 1986, 160 p.

5. Volkov M.G., Khalfin R.S., Topol'nikov A.S. et al., Approaches to justification of selection of the application field for new artificial lift method (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2019, no. 3, pp. 96–100, DOI: https://doi.org/10.24887/0028-2448-2019-3-96-100.

6. Timashev E.O., Khalfin R.S., Volkov M.G., Statistical analysis of the failure times and feed rates of downhole pumping equipment in operating parameter ranges (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2020, no. 2, pp. 46-49, DOI: https://doi.org/10.24887/0028-2448-2020-2-46-49



Attention!
To buy the complete text of article (Russian version a format - PDF) or to read the material which is in open access only the authorized visitors of the website can. .