玉门油田细粉砂低温油藏防砂技术研究

A Tiny Sand Control Technology for the Low-Temperature Reservoirs in the Yumen Oilfield

为解决玉门油田细粉砂低温油藏防砂技术难题,研究了一种新的人工岩层防砂技术,分析了人工固结岩层防细粉砂的机理。对新型防砂材料的固结条件、固结温度、固结岩心的强度、渗透率和孔喉分布进行了室内试验研究,结果表明,防砂材料能在20℃的低温水环境中固结,固结岩心渗透率大于3μm2,强度大于4 MPa,岩心孔喉分布均匀,最小防砂粒径为4μm。现场应用表明,该防砂技术成功率高,可解决高泥质含量的低温细粉砂岩防砂技术难题。

A novel artificial sand control technique has been developed to tackle sand production of low-temperature reservoirs containing tiny sand in the Yumen Oilfield. The mechanism is also analyzed to control tiny sand production via artificial consolidated rocks. New type of sand control materials have been tested with respect to bonding condition, bonding temperature, strength of consolidated cores, permeability, and pore distributions etc. Test results indicate that such material can work well at 20 ℃ with core permeability more than 3 μm^2 , strength over 4 MPa, uniform pore distribution, and the minimum effective diameter of 4 μm. The field applications show that this sand control method is able to prevent low-temperature tiny sand with high silt content from sand producing with high success ratio.