CAJ | 학술논문

目前，国内外许多油藏已处于蒸汽吞吐的后期。此时的油藏油气比低、含水量高、地层压力低、井况差、周期注气量大、操作成本高，产油更加困难。改善蒸汽吞吐后期的采油技术，可以最大限度的提高油藏的采收率。如今，应用于蒸汽吞吐后期增产的方法有：应用助剂改善吞吐效果、间歇注汽技术、“一注多采”技术、多井整体吞吐技术、注采参数优化技术、侧钻水平井技术、蒸汽驱技术、蒸汽辅助重力泄油技术和火烧油层技术等。然而，现在我国还在尝试发展一些新的技术，如水平压裂辅助蒸汽驱和多井组整体优化蒸汽驱等等。这使得蒸汽吞吐后期的增产技术拥有更为广阔的前景。
목전，국내외허다유장이처우증기탄토적후기。차시적유장유기비저、함수량고、지층압력저、정황차、주기주기량대、조작성본고，산유경가곤난。개선증기탄토후기적채유기술，가이최대한도적제고유장적채수솔。여금，응용우증기탄토후기증산적방법유：응용조제개선탄토효과、간헐주기기술、“일주다채”기술、다정정체탄토기술、주채삼수우화기술、측찬수평정기술、증기구기술、증기보조중력설유기술화화소유층기술등。연이，현재아국환재상시발전일사신적기술，여수평압렬보조증기구화다정조정체우화증기구등등。저사득증기탄토후기적증산기술옹유경위엄활적전경。
Now, many reservoirs are in the steam stimulation later stage. So reservoirs’ oil-gas ratio is low, the moisture is high, the formation pressure is low, well conditions are poor,cyclic steam injection is more, operation cost is high, oil production is more difficult. Improving the later steam stimulation techniques can maximize oil recovery.The methods used in the later steam stimulation stage to increase production include: using adjuvant to improve steam stimulation,intermittent steam flooding,one steaming well and multi-well production,multi-well steam stimulation,optimizing injection-production rating,sidetrack drilling horizontal well, steam driving,SAGD,ISC and so on.However,we are trying some new technologies, including FAST and multiple well groups steam driving and so on, which can make the prospect of increasing production in the later steam stimulation stage more extensive.