Abstract：

In long horizontal wells, bottom water breakthrough is usually encountered due to reservoir heterogeneity and anisotropy. Traditional inflow control device (ICD) structures have disadvantages such as possessing a permanent flow resist rate and being disabled when meeting water. The main application autonomous inflow control device (AICD) usually has a complex structure or narrow application ranges problems which limits its applicability. The paper raised an novel AICD structure design combining a continuous jet principle and water swelling rubber (WSR). Sensibilities testing and its structure advantages were studied based on numerical simulation and full-scale physical experiments. The result shows that the device has a simple structure which provides an outstanding anti-blocking property and is insensitive to viscosity or density. The structure has a wide application range and can maintain excellent performance in all production stages.

Key words：autonomous inflow control device; structure optimization; numerical simulation; full-scale experiment; performance analysis

Received： 2017-02-21

Corresponding Authors： wellcompletion@126.com

Cite this article：WANG Xiaoqiu, WANG Zhiming, ZHAO Lin. A novel AICD structure design and its performance analysis. Petroleum Science Bulletin, 2018, 03: 302-312.

URL：