HD-1注汽井新型防砂材料的研究与应用

孤岛油田属稠油疏松砂岩油藏,生产过程中油井出砂严重,现有的涂敷砂人工井壁防砂注蒸汽后强度较低,造成防砂成功率低,注汽后高强度采液生产周期较短。为此,通过室内试验,优选出耐高温树脂、高强度骨架颗粒、偶联剂、固化剂,进行室内配方优化试验,评价固结体耐高温性能,测定其渗透率,研制出一种适用于疏松砂岩油藏注蒸汽热采井的HD-1注汽井新型防砂材料。在孤岛油田稠油注蒸汽热采区共试验72口井,成功率为91.0%,截止目前,累计产油为121 572 t,单井平均有效期为233 d。现场应用表明：HD-1注汽井新型防砂材料耐高温、强度高,防砂成功率高,有效期长,能够有效改善注蒸汽热采井的防砂效果。

Research on new sand control material HD-1 applied to steam injection wells in Gudao Oilfield

There are unconsolidated sand reservoirs which produce viscous crude oil in Gudao Oilfield,and sand production in the course of oil production is severe.The sand control ability of coated sand artificial borehole wall is low and the production cycle is short after steam injection.For this reason,high temperature resistance resin,high strength skeleton particle,coupling agent,and solidifying agent were selected to formulate a new sand control material through indoor experiment,and its high temperature resistance ability was evaluated and permeability was measured.Field experiments of 72 thermal production wells in Gudao Oilfield were made,and 91.0% of these wells were controlled successfully.Furthermore,cumulative oil production was 121 572 t,and average validity time of single well is 233 d.Field test showed HD-1 sand control material can improve recovery of steam injection wells effectively.