砂岩型地下储气库开发过程中出砂规律分析

Analysis of sand production law in sandstone underground gas storage development

以双6储气库为例研究了砂岩型地下储气库开发过程中出砂规律,根据双6储气库储层地质特征和生产条件,设计了储层岩心出砂物理模拟实验,分析研究引起储层出砂的因素及出砂机理,以及对储气库开发的影响。结果表明,在控制生产压差的条件下,双6储气库储层出砂并不严重,而水的流动对储层出砂具有较大的影响,因此在储气库生产管理和防砂措施中,应控制生产压差以降低气层中的渗流速度和控制气层中产生水的流动,达到主动防砂的效果。

By taking Shuang 6 gas storage as an example, the sand production law in sandstone underground gas storage development was analyzed. Based on the Shuang 6 gas storage reservoir geologic characteristics and production conditions, the reservoir of sand core physical simulation experiments was designed and the causes of store with sand and sand production mechanism were analyzed. The results indicate under the control of production pressure, the sand production in Shuang 6 gas storage reservoir is not serious, while the flow of water has a serious influence on production reservoir sand. Therefore, during the process of production management and sand control measures, the differential pressure should be controlled to reduce the gas seepage speed and control the water flow of reservoir, and then a good effect of active sand control was achieved.