有机硅高温固砂技术研究及在稠油开采中的应用

克拉玛依六~九区稠油区块属砂岩油藏,地层结构疏松,注高温、高压蒸汽的热采方式加剧了油层的破坏,致使生产井出砂日趋严重,严重影响了该区稠油油藏的正常生产。六~九区自1991年以来,先后实施了绕丝管防砂等机械防砂及羟基铝防砂等化学固砂措施,由于防砂范围有限、效果差、固砂周期短、成本较高等原因,这些措施均未得到推广应用。有机硅改性固砂剂克服了以上缺点,具有较好的高温固砂性能,室内试验结果表明:在300℃下,优选的有机硅高温固砂剂固结体抗压强度在4MPa以上,同时该固砂剂对地层伤害小,水相渗透率达0.60μm2以上。高温固砂剂在六~九区稠油油藏现场试验了10井次,有效率90%,增产原油1180.7t,处理后原油含砂率均为微量,取得了理想的效果,具有较高的推广价值。

Study on Organosilicon High Temperature Sand Consolidating Technique and Application of Viscous Crude Exploitation

klamayi 6-9 viscous crude block are sandstone reservoir, formation structure is unconsolidated, the thermal recovery by injecting high temperature and high pressure steam will damage oil reservoir more heavier, make sand producing of producing well more seriously, which influence normal producing of this viscous crude reservoir block.Since 1991 wire wrapped sand control of mechanical sand control and hydroxy-aluminium sand control of chemical sand consolidating measures have been taken, but because sand control scope is limit, effect is bad, consolidating cycle is short, cost is high and so on, these measures can’t be used widely.Without above disadvantages organosilicon modified sand consolidating technique has good high temperature sand consolidating property, tests indoors show under 300℃, compression strength of optimized organosilicon high temperature sand consolidating agent is above 4MPa, at the same time this agent take less damage to the formation, water phase permeability is above 0.60.the high temperature sand consolidating agent has been tested in 10 wells in field of 6-9 block viscous crude reservoir, efficiency is 98%, crude oil production is increased by 1180.7tons.After treatment, sand content of crude oil is very little.This technique has get satisfied effect, be worthwhile being popularized.