MRC Well Optimization Model for ICV Settings
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Solution Overview
Problem
Optimizing maximum reservoir contact (MRC) wells to achieve production values above a predefined threshold, particularly in multi-lateral wells equipped with interval control valves (ICVs) and permanent downhole monitoring systems (PDHMS), is challenging due to the complexity of managing water/gas movement and lateral clean-up, which existing methods fail to address effectively.
Innovation Solution
A computer-implemented method using a numerical model to estimate flowrates and optimize ICV settings, providing users with options for improving individual lateral production, sweep efficiency, and water rate reduction, implemented through a user interface, which iteratively calculates flowrates and pressure drops across ICVs based on input data and field-calibrated coefficients.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional methods are used to optimize MRC wells, then the optimization process is slow and costly, but the numerical model requires complex calculations and data processing
Solution Approach 1:
The system performs preliminary calculations by pre-computing flowrate relationships and pressure drop characteristics for different ICV settings before actual optimization is needed. This allows the optimization process to quickly evaluate pre-analyzed scenarios rather than performing complex calculations in real-time, thereby speeding up the optimization process while managing computational complexity.
Solution Approach 2:
The patent introduces an intermediary computational layer that translates complex reservoir simulation data into simplified optimization recommendations. The system acts as a mediator between the complex numerical model and the user, providing processed insights rather than raw computational outputs, thus reducing the perceived complexity while maintaining optimization effectiveness.
2Productivity
If ICV settings are optimized for individual lateral production, then production efficiency improves, but water/gas movement management becomes more complex
Solution Approach 1:
The system applies local quality optimization by tailoring ICV settings to the specific characteristics of each lateral while maintaining overall system coordination. Each lateral receives customized control parameters based on its individual performance, allowing localized production optimization without requiring complex centralized management of water/gas movements across all laterals.
Solution Approach 2:
The patent utilizes parameter changes in ICV opening positions to manage water/gas movement patterns. By adjusting valve parameters, the system indirectly controls fluid distribution and pressure profiles, simplifying the management of complex multiphase flow while maintaining individual lateral production efficiency.
3Adaptability or versatility
If multiple ICV options are provided for user selection, then production optimization flexibility increases, but the decision-making process becomes more complex
Solution Approach 1:
The system provides feedback-driven recommendations by analyzing predicted added value for each ICV option and presenting this information to users. This feedback mechanism guides decision-making by highlighting the most beneficial options based on quantitative analysis, thereby maintaining flexibility while simplifying the user's decision process through informed guidance.
Solution Approach 2:
The patent creates simplified representations or copies of complex optimization scenarios, presenting multiple ICV options in an accessible format that preserves the essence of complex trade-offs without requiring users to understand the underlying complexity. This allows flexible decision-making while maintaining ease of operation.
Data Source
AI summary
Systems and methods include a method for optimizing maximum reservoir contact wells. For each lateral of a multi-lateral well and using input data for the lateral, a lateral flowrate is determined for each opening position for different combinations of internal control valve (ICV) sizes and target flowing bottomhole pressures. Using a numerical model, an estimated total flowrate is determined for each lateral based on the lateral's flowrate. Options are provided for presentation to a user in a user interface for changing ICV settings of the multi-lateral well. Each option includes a predicted added value to production of the multi-lateral well. The predicted added value includes one or more of an individual lateral production contribution, an enhanced sweep efficiency for one or more laterals, or a water rate reduction. A selection by the user of an option is received. The option is implemented during production of the multi-lateral well.