摘要：高压井的存在不利于稠油的正常生产。由于在注汽过程中注汽压力过高，往往高于锅炉的额定耐压。长此以往，不但得不到理想的注汽效果，还极大的恶化了锅炉的生产条件，使其关键部件老化速度加快，注汽寿命大幅度降低。另外，对于高压井，我们往往采用打排放的措施来完成注汽施工。这将极大的降低蒸汽的干度，使其热焓值降低，从而影响单位体积蒸汽所携带的热量。直接的后果就是，油层加热不够，没有起到足够的加温降粘的目的，从而，在投入生产后不能达到预期的产量，生产周期短，投入产出比高。因此，我们采用了振动解堵和小排量泵，解决注汽过程中压力太高的问题。

关键词：高压井；注汽；振动解堵；小排量泵

Abstract: The existence of high-pressure wells is not conducive to the normal production of heavy oil. The process of steam injection, steam injection pressure is too high, often higher than the rated pressure of the boiler. In the long run, not only not be ideal steam injection, and also greatly worsened the conditions of production of the boiler, the key components of aging accelerated significantly reduce the life of the steam injection. In addition, for high pressure wells, we often used to fight emissions of measures to complete the construction of steam injection. This will greatly reduce the dryness of the steam, so that the enthalpy value decreased, thus affecting the heat carried by the unit volume of steam. The direct consequence is that the reservoir heating is not enough, did not play enough to purpose of heating viscosity reduction, which, after put into production can not achieve the desired yield, short production cycle, the input and output is high. Therefore, we used vibration plugging and small-displacement pump, and solve the problem of too high pressure in the steam injection process.Keywords: high pressure wells; steam injection; vibration deplugging; small-displacement pump

中图分类号：TK223.6文献标识码：A 文章编号：

0引言

孤东稠油为馆陶组稠油油藏，油层埋藏深度在1050-1450米，油层厚度在3-15米，油层岩石胶结疏松，開采过程中出砂严重，渗透率在0.2-2.0um2, 泥质含量4-35%。原油分布平面上，顶稀边稠；纵向上，上稀下稠，地面粘度在2000-15000mPa.s。共有红柳油田3个断块；孤东油田5个断块；新滩油田2个断块等共10个开发单元,地质储量2670万吨。其中有四个整装块，其地质储量1500万吨。其余的6个小断块均为零散区块，地质储量为1170万吨。这些井动用程度差，多为低轮次注汽，因油稠或泥质含量高等多种因素的影响，造成这部分井的注汽压力普遍偏高，注汽难度大，注汽效果差。统计2001年以来的注汽井，注汽压力高的井有36口，占总注汽井的17.3%。这部分井作业次数多，年平均作业1.5次；……