本文選題：新型水合物抑制劑 + 甲醇��； 參考：《天然氣與石油》2016年06期

【摘要】：由于冬季環(huán)境溫度較低,采氣管線、井筒常常發(fā)生水合物堵塞現(xiàn)象。目前,東勝氣田主要利用甲醇來抑制水合物的生成。但由于甲醇具有毒性,易揮發(fā),給安全、環(huán)保帶來了巨大壓力。亟需尋求有效的水合物防控劑,既要滿足東勝氣田生產(chǎn)需求,提高其開發(fā)效益,又要兼具環(huán)保、安全的特點,對人體和環(huán)境不造成傷害。為此,對國內(nèi)外水合物抑制技術(shù)進行了大量的調(diào)研,在此基礎(chǔ)上,開展了無毒新型水合物抑制劑Z-6的研究及應(yīng)用。結(jié)合氣井實際生產(chǎn)情況,現(xiàn)場采用連續(xù)自力式滴注工藝,通過不斷優(yōu)化加注制度,完全能夠滿足氣井的生產(chǎn)需要。采用新型防控劑滴注工藝后,東勝氣田生產(chǎn)時率達(dá)到95,較同期增長7個百分點;單次解堵用時7 h,較前期減少近半,藥劑用量僅為同期甲醇用量的30,節(jié)約了成本。同時,該防控劑減緩了井下管柱的腐蝕速度,其緩蝕率達(dá)到80。研究表明,該新型水合物抑制劑在水合物預(yù)防和解堵效果上能夠替代甲醇,且滿足現(xiàn)場生產(chǎn)及安全環(huán)保要求。
[Abstract]:Because of low temperature in winter and gas production pipeline, gas hydrate blockage often occurs in wellbore. At present, Dongsheng gas field mainly uses methanol to restrain hydrate formation. However, because methanol is toxic and volatile, it brings great pressure to safety and environmental protection. It is urgent to find effective hydrate prevention and control agent which not only meets the production demand of Dongsheng gas field and improves its development efficiency but also has the characteristics of environmental protection and safety and does not cause harm to human body and environment. Therefore, a great deal of research on hydrate inhibition technology has been carried out at home and abroad. On the basis of this, the research and application of Z-6, a new non-toxic hydrate inhibitor, have been carried out. According to the actual production conditions of gas wells, continuous self-powered drip injection process is adopted in the field, and the production needs of gas wells can be completely met by continuously optimizing the injection system. The production time rate of Dongsheng gas field is up to 95%, which is 7 percentage points higher than that of the same period, and the time of single plugging removal is 7 h, which is nearly half of that of the previous period, and the dosage of medicament is only 30% of that of methanol in the same period, which saves the cost. At the same time, the control agent slowed down the corrosion rate of the pipe string, and the corrosion inhibition rate reached 80. 5%. The results show that the new hydrate inhibitor can replace methanol in hydrate prevention and plugging, and meet the requirements of field production and safety and environmental protection.
【作者單位】： 中國石化華北油氣分公司采氣二廠;
【分類號】：TE39
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本文編號：1782956