Spatial Stress Field Evaluation System for Hydraulic Fracturing
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Solution Overview
Problem
The recovery of resource utilization efficiency and the effect of proactive utilization of the spatial stress field in oil and gas fields after hydraulic fracturing cannot be objectively and quantitatively evaluated, relying heavily on artificial experience.
Innovation Solution
A system and method for evaluating the effect of proactive utilization of a spatial stress field in a laboratory setting, using a rock sample placement device, confining pressure control, fracturing fluid injection, fracture imaging, and stress measurement to calculate a stress field proactive utilization coefficient, allowing for quantitative evaluation and optimization of fracturing schemes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If artificial experience is used to estimate resource utilization efficiency and recovery, then the evaluation process is simple and quick, but the evaluation cannot be objective and quantitative
Solution Approach 1:
The patent replaces the mechanical/manual system of artificial experience-based estimation with an automated evaluation system that uses electronic data processing, stress field simulation, and quantitative analysis algorithms to objectively assess resource utilization efficiency and recovery effects.
Solution Approach 2:
The patent introduces an intermediary evaluation system that acts as a bridge between complex field data and actionable insights, using standardized metrics and computational models to translate raw operational data into objective quantitative evaluations of fracturing effectiveness.
2Measurement precision
If a quantitative evaluation system is established to objectively assess spatial stress field utilization, then evaluation precision is improved, but the system complexity increases
Solution Approach 1:
The patent designs a universal evaluation system that can handle multiple types of fracturing operations, different well patterns, and various stress field configurations through a single integrated platform, reducing the need for multiple specialized systems while maintaining high evaluation precision.
Solution Approach 2:
The patent utilizes parameter changes in the evaluation model to simplify complex assessments by transforming multiple interrelated variables into standardized evaluation metrics, enabling precise quantitative assessment without proportionally increasing system complexity.
3Productivity
If multiple horizontal wells with staggered stacked laterals are used to create complex fractures, then resource utilization efficiency is improved, but the stress field becomes more complex and difficult to evaluate
Solution Approach 1:
The patent applies segmentation by dividing the complex spatial stress field into discrete evaluatable components associated with individual wells and fracture networks, allowing the system to process and evaluate each segment separately while maintaining overall system coherence and managing complexity.
Solution Approach 2:
The patent transitions from two-dimensional fracture planning to three-dimensional spatial stress field evaluation, incorporating vertical stacking and horizontal spacing dimensions to comprehensively assess complex well patterns and optimize resource utilization in multi-layer reservoirs.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the establishment of a quantitative evaluation system for the proactive utilization of spatial stress fields in stereoscopic well patterns, optimizing fracturing design parameters for improved resource recovery and efficiency in tight reservoirs.
Implementation Method 1
a confining pressure control device for applying a set confining pressure to the rock sample in the rock sample placement device to simulate an original in-situ stress field of the rock sample in an actual formation
Implementation Method 2
a large-scale hydraulic fracturing technology needs to be used to generate a large-scale artificial fracture network, so as to increase matrix conductivity
Implementation Method 3
a large amount of injected fracturing fluid and proppant will generate induced stress around the fracture
Data Source
AI summary
A system and a method evaluate the effect of proactive utilization of a spatial stress field in laboratory. The system includes a rock sample placement device for placing a rock sample, a confining pressure control device for applying a set confining pressure to the rock sample, a fracture imaging device, a fracturing fluid injection device for injecting fracturing fluid into the perforation in the wellbore of the rock sample to form fractures within the rock sample, a stress measurement device, and a processing device for calculating a stress field proactive utilization coefficient of the rock sample.