Study on the performance of downhole spiral-cyclone coupling separator for natural gas hydrate

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology Pub Date : 2024-09-03 DOI:10.1016/j.apt.2024.104638

Yang Tang , Na Xie , Yufa He , Yunjian Zhou , Zeliang Li , Guorong Wang

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Abstract

Aiming at the problems of reservoir collapse and pipeline blockage caused by serious sand production in the exploitation of natural gas hydrate, the downhole spiral-cyclone coupled in-situ separator is used for sand removal. The separator structure is determined by the physical parameters and empirical formulas. The structure is analyzed and optimized by CFD numerical simulation. The optimal structural parameters of the separator are obtained: the position of the vortex guide plate is 28 mm, the number of inlets is 6, the spiral flow channel structure is a circular section, the number of spiral lines is 2, and the depth of the overflow pipe is 100 mm. At this time, the sand removal efficiency of the separator is 89.55 %. The experimental verification was carried out. The maximum sand removal efficiency of the indoor test was 84.46 %, and the relative error with the simulation was 5.51 %. Through the comparison between experimental phenomena and numerical simulation, it is clear that the spiral-cyclone coupling separator has good performance in the separation and sand removal of natural gas hydrate underground mining. The research in this paper can provide some reference for the design and optimization of natural gas hydrate downhole in-situ separators.

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天然气水合物井下螺旋-旋流耦合分离器性能研究

针对天然气水合物开采中严重产砂造成的储层坍塌和管道堵塞问题，采用井下螺旋-旋流器耦合原位分离器进行除砂。分离器结构由物理参数和经验公式确定。通过 CFD 数值模拟对结构进行了分析和优化。得到了分离器的最优结构参数：导涡板位置为 28 毫米，进水口数量为 6 个，螺旋流道结构为圆形截面，螺旋线数量为 2 条，溢流管深度为 100 毫米。此时，分离器的除砂效率为 89.55 %。进行了实验验证。室内试验的最大除沙效率为 84.46 %，与模拟的相对误差为 5.51 %。通过实验现象与数值模拟的对比，可以看出螺旋-旋流器耦合分离器在天然气水合物地下开采的分离除砂中具有良好的性能。本文的研究可为天然气水合物井下原地分离器的设计和优化提供一定的参考。

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来源期刊

Advanced Powder Technology 工程技术-工程：化工

CiteScore

9.50

自引率

7.70%

发文量

424

审稿时长

55 days

期刊介绍： The aim of Advanced Powder Technology is to meet the demand for an international journal that integrates all aspects of science and technology research on powder and particulate materials. The journal fulfills this purpose by publishing original research papers, rapid communications, reviews, and translated articles by prominent researchers worldwide. The editorial work of Advanced Powder Technology, which was founded as the International Journal of the Society of Powder Technology, Japan, is now shared by distinguished board members, who operate in a unique framework designed to respond to the increasing global demand for articles on not only powder and particles, but also on various materials produced from them. Advanced Powder Technology covers various areas, but a discussion of powder and particles is required in articles. Topics include: Production of powder and particulate materials in gases and liquids(nanoparticles, fine ceramics, pharmaceuticals, novel functional materials, etc.); Aerosol and colloidal processing; Powder and particle characterization; Dynamics and phenomena; Calculation and simulation (CFD, DEM, Monte Carlo method, population balance, etc.); Measurement and control of powder processes; Particle modification; Comminution; Powder handling and operations (storage, transport, granulation, separation, fluidization, etc.)