Scholarly record
RATIONALE BEHIND THE DESIGN SOLUTIONS FOR ENHANCED OIL RECOVERY WITH THE IMPLEMENTATION OF -PRESS 3D URAL- SOFTWARE
Abstract
Research objective: To develop methodological technique for the assessment of change patterns of the effectiveness of oil recovery depending on the size of already exhausted sections and stress-strain performance of oil reservoir. The experience of oil development shows that configuration (size) of operating area as well as flow coefficient of oil reservoir are considered to be within the key factors determining the rate of oil recovery, regime and parameters of injection and pumping as well as the design of well location. The increase of occurrence depth, extent of faulting, gas content along with the decrease of thickness leads to decrease of water-transmitting capability and consequently effective operational radius is also declining while the pressure and pumping time are increasing. Given other conditions being equal the denser network of injection wells as well as more powerful pumping equipment is required for the development of oil reservoir with low water-transmitting capability. This causes higher capital and operational costs resulting in lower economic efficiency of oil extraction. The alternative option is to apply software in order to model the parameters of well network. Methodology: Boundary-element method (BEM) is fundamental for the stress-strain analysis of oil reservoir considering the natural and man-caused compliance; effective numerical algorithms and software, testing of software package are applied. Results: The upgrading of software package пїЅPRESS 3D URALпїЅ that enables automation of calculations and include processing unit of raw data, unit of numerical analytic calculations, unit of the results processing aimed at visualization and analysis. Implementation of the component technology enables the differentiation of the objects as well as its properties within the operating area. The correction factors are proposed that permit the adjustment of parameters of the production and injection wells network (radius of effective oil reservoir treatment) for the sections with different stress-strain performance for the sake of enhancement of oil recovery rate. Discussion: Implementation of the proposed methodological technique for the assessment of parameters of wells network within the development of oil fields provides more reliable forecast of oil extraction indicators, enables the enhancement of oil recovery rate as well as the effectiveness of oil production.
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