Research of paraffin removal & controlling techniques of gas condensate wells in 9th district of Tahe Oilfield
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摘要: 针对塔河九区酸性凝析气井清蜡难题,通过X衍射、能谱分析、红外光谱、DSC测试等多种现代测试分析手段,对九区沉积堵塞物的组成及物化性质进行分析研究.区别于常规凝析油沉积蜡特征,九区堵塞物主要为微晶蜡,熔点在82 ℃以上.明确蜡样特征并结合气井的实际生产情况,确定了九区清防蜡工艺,即油溶性化学清蜡剂辅助加热清蜡技术和细管加注防蜡剂的防蜡技术.Abstract: In view of the difficulties of paraffin removing in acidic condensate gas wells in the 9th district of the Tahe Oilfield, we analyzed the composition and physical/chemical property of sedimentary clogs by means of X-ray diffraction, energy spectrum, infrared spectrum and DSC tests. Different from paraffin deposited in conventional condensate gas wells, the clogs in the 9th district were mainly microcrystalline wax, with melting temperature above 82 ℃. According to wax features and field work situations, a paraffin removal technique with oil soluble chemical paraffin removal agent and paraffin inhibitor through slim tube was recommended for the study area.
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