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Development and Performance Evaluation of an Intelligent Sand Control Screen Based on Polyphenylene Sulfide
Yuanwei Sun1,2, Dexu Sun3, Yizhong Zhao4
1College of Petroleum Engineering, Shandong Institute of Petroleum and Chemical Technology, Dongying 257061, China.
ACS Omega
|June 6, 2022
Summary
A new high-strength shape memory polyphenylene sulfide (SMPPPS) was developed for intelligent sand control screens in unconsolidated sandstone wells. This material offers excellent shape memory and sand retention, addressing limitations of current technologies.
Area of Science:
- Materials Science
- Petroleum Engineering
- Polymer Chemistry
Background:
- Unconsolidated sandstone horizontal wells often use open hole combined with sand filter pipes, leading to issues like wellbore collapse and pipe blockage.
- Existing polyurethane intelligent sand control screens have limitations in downhole temperature and material strength.
Purpose of the Study:
- To synthesize a high-strength shape memory polyphenylene sulfide (SMPPPS) for enhanced sand control in challenging downhole environments.
- To analyze the shape memory performance and pore size variation of SMPPPS based on composition and processing.
- To evaluate the performance of the novel SMPPPS intelligent screen.
Main Methods:
- Synthesis of high-strength shape memory polyphenylene sulfide (SMPPPS) through indoor experiments.
- Analysis of shape memory performance, including recovery ratio, at elevated temperatures.
- Experimental determination of pore size distribution influenced by foaming agent, pore enhancer, temperature, and pressure.
- Evaluation of permeability, compressive strength, and sand retaining accuracy of the SMPPPS screen.
Main Results:
- Optimized cross-linking agent content at 4.5 wt % for SMPPPS.
- Achieved excellent shape memory performance with a 99.8% recovery ratio at 110 °C within 11.8 minutes.
- Established relationships between pore size distribution and processing parameters, achieving a main pore size range of 80-320 μm under specific conditions.
- SMPPPS exhibited good downhole fluid adaptability, high sand retaining accuracy (superior to traditional screens), but showed more severe blockage.
Conclusions:
- The synthesized high-strength SMPPPS demonstrates promising shape memory properties and effective sand control capabilities.
- The material's performance is tunable via composition and processing, offering a potential solution for unconsolidated sandstone well challenges.
- Further research may be needed to mitigate the observed blockage issue for broader application.
