低弹性模量碳酸盐岩储层裂缝导流能力实验研究.docx

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Title: Experimental Study on the Conductivity of Fractures in Low Elasticity Modulus Carbonate Reservoirs
Abstract:
Fractures play a significant role in enhancing the permeability of low elasticity modulus carbonate reservoirs. Understanding the conductivity of these fractures is crucial for optimizing hydrocarbon recovery in such formations. This study aims to investigate the conductive ability of fractures in low elasticity modulus carbonate reservoirs through experimental research.
Introduction:
Low elasticity modulus carbonate reservoirs are characterized by their low stiffness and brittleness, resulting in the formation of natural fractures during the geological evolution. These fractures are essential pathways for fluid flow, which significantly enhance the reservoir's connectivity and productivity. However, the intrinsic properties and structural characteristics of these fractures have remarkable impacts on hydrocarbon production. This study seeks to explore the conductivity of fractures in low elasticity modulus carbonate reservoirs to improve hydrocarbon recovery efficiency.
Methodology:
1. Sample Preparation: Obtain representative core samples from low elasticity modulus carbonate reservoirs. The samples should include fractured and intact specimens to compare the conductivity of fractures with an intact rock matrix.
2. Characterization of Mechanical Properties: Conduct traditional rock mechanics experiments to determine the mechanical properties, including density, porosity, elasticity modulus, and tensile strength of the samples.
3. Fracture Imaging: Employ advanced techniques such as optical microscopy and scanning electron microscopy (SEM) to observe the characteristics and attributes of fractures in the samples.
4. Conductivity Measurement: Design and construct a laboratory setup to measure and evaluate the fracture conductivity. This can involve measuring the flow rate of fluids through artificially created fractures under varying pressure conditions.
5. Sensitivity Analysis: Investigate the influence of different factors, including fracture width, roughness, and mineralogical composition, on fracture conductivity.
Results and Discussion:
1. Mechanical Property Analysis: Analyze and compare the mechanical properties of fractured and intact samples to determine the impact of fractures on rock properties.
2. Fracture Characterization: Present detailed observations and discussions on the geometry, aperture, roughness, and mineralogical composition of fractures in the samples.
3. Conductivity Measurement: Assess the conductivity of fractures by analyzing the flow rate of fluids and pressure drop across artificially created fractures.
4. Sensitivity Analysis: Identify the influence of various parameters such as fracture width, roughness, and composition on the conductivity of fractures.
Conclusion:
The experimental study provides valuable insights into the conductive ability of fractures in low elasticity modulus carbonate reservoirs. Findings from this research will aid in optimizing hydrocarbon recovery strategies in such formations. Furthermore, the study contributes to a better understanding of fracture development and connectivity in low stiffness carbonate rocks, enabling more accurate reservoir characterization and improved reservoir modeling.
Keywords: low elasticity modulus carbonate reservoirs, fractures, conductivity, fluid flow, hydrocarbon recovery, reservoir characterization