INTERACTION OF WELLS AS A METHOD FOR ANALYZING THE EFFECTIVENESS OF A FLOODING SYSTEM ON A CARBONATE TYPE OF RESERVOIR
The relevance of the study is confirmed by the low degree of recovery of oil reserves concentrated in fractured-pore type carbonate reservoirs. Despite significant levels of compensation for liquid extraction by injection, the energy state of the deposits presented is in an unsatisfactory state. One...
| Main Authors: | , |
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| Format: | Article |
| Language: | Russian |
| Published: |
Tomsk Polytechnic University
2023-02-01
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| Series: | Известия Томского политехнического университета: Инжиниринг георесурсов |
| Subjects: | |
| Online Access: | http://izvestiya.tpu.ru/archive/article/view/3701/2901 |
| Summary: | The relevance of the study is confirmed by the low degree of recovery of oil reserves concentrated in fractured-pore type carbonate reservoirs. Despite significant levels of compensation for liquid extraction by injection, the energy state of the deposits presented is in an unsatisfactory state. One of the most common methods of increasing oil recovery in the fields is flooding of reservoirs. The existing methods of flooding allow reaching the level of the oil recovery coefficient of no more than 0,3. It is relevant and important to increase the efficiency of the development of such assets in the conditions of an inefficient flooding system, high geological and stratigraphic heterogeneity and low filtration and capacitance properties. The use of mathematical statistics methods regarding the evaluation of the effectiveness of the flooding system has found a response in the works of many scientists today and is a convincing alternative for their implementation in the overall process of improving the quality of work and decisions made. The main aim of the research is to determine the response time of the liquid extraction reaction to the injection of the agent; based on the calculated values, establish the nature of the hydrodynamic coupling and evaluate the interference between the elements of the flooding system. Objects: fractured carbonate reservoirs. Methods: interpretation and isolation of field-geophysical and hydrodynamic studies; computer modeling using the Saphir module of application software (Kappa); mathematical modeling by means of Spearman and Kendall rank correlation. Results. The use of mathematical statistics methods made it possible to establish the nature of the downhole interference between the elements of the flooding system. The calculated values of the response time of the liquid extraction reaction to the injection of the agent made it possible to increase the convergence of the results. To improve the quality of decision-making on optimization activities for deposits, it was proposed to impose indicators of borehole interference on the map of seismic facies zones. The presented set of methods makes it possible to comprehensively assess the effectiveness of the flooding system when analyzing it on a carbonate type of reservoir. |
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| ISSN: | 2500-1019 2413-1830 |