中国石油大学学报(自然科学版)
中國石油大學學報(自然科學版)
중국석유대학학보(자연과학판)
JOURNAL OF CHINA UNIVERSITY OF PETROLEUM(EDITION OF NATURAL SCIENCE)
2011年
2期
107-116
,共10页
任韶然%牛保伦%侯胜明%张亮%顾鸿君
任韶然%牛保倫%侯勝明%張亮%顧鴻君
임소연%우보륜%후성명%장량%고홍군
低渗透油藏%提高采收率%注气%相对渗透率模型%可行性分析
低滲透油藏%提高採收率%註氣%相對滲透率模型%可行性分析
저삼투유장%제고채수솔%주기%상대삼투솔모형%가행성분석
low permeability reservoirs%improved oil recovery%gas injection%relative permeability model%feasibility analysts
针对新疆低渗透油藏,利用油藏数值模拟技术筛选不同注气提高采收率方案,包括CO2、空气、N2和烟道气,评价其技术和经济的可行性.采用改进的Corey模型计算各种气体在不同混相条件下的开发效果,重点分析温室气体CO2的埋存及提高采收率机制.在无廉价气源条件下,可以选取注空气低温氧化技术,直接注人电厂排放的烟道气也是一种不错的提高采收率技术并可减少温室气体的排放,但烟道气运输成本过高.通过可行性分析认为,不同注气开发方案在技术上是可行的,但在经济上受到一定限制.
針對新疆低滲透油藏,利用油藏數值模擬技術篩選不同註氣提高採收率方案,包括CO2、空氣、N2和煙道氣,評價其技術和經濟的可行性.採用改進的Corey模型計算各種氣體在不同混相條件下的開髮效果,重點分析溫室氣體CO2的埋存及提高採收率機製.在無廉價氣源條件下,可以選取註空氣低溫氧化技術,直接註人電廠排放的煙道氣也是一種不錯的提高採收率技術併可減少溫室氣體的排放,但煙道氣運輸成本過高.通過可行性分析認為,不同註氣開髮方案在技術上是可行的,但在經濟上受到一定限製.
침대신강저삼투유장,이용유장수치모의기술사선불동주기제고채수솔방안,포괄CO2、공기、N2화연도기,평개기기술화경제적가행성.채용개진적Corey모형계산각충기체재불동혼상조건하적개발효과,중점분석온실기체CO2적매존급제고채수솔궤제.재무렴개기원조건하,가이선취주공기저온양화기술,직접주인전엄배방적연도기야시일충불착적제고채수솔기술병가감소온실기체적배방,단연도기운수성본과고.통과가행성분석인위,불동주기개발방안재기술상시가행적,단재경제상수도일정한제.
In this paper,the IOR potentials of various gas injection techniques,namely,CO_2,air,Nz and flue gas,werestudied and compared for a low permeability oil reservoir of Xinjiang Oilfteld based on field data and reservoir simulation results.A modified Corey correlation of relative permeability was used to simulate the miscibility effect of various gases at different reservoir conditions.Special attention was given to CO_2 injection as a potential approach for greenhouse gas sequestration.Air injection(low temperature oxidation technique)is considered as a favourable option for oilfields where there are no other cheap gas resources available.Direct injection of flue gas into oil reservoirs(from power plants)is another option for IOR and greenhouse gas disposal,but with high gas transportation cost.The economic and technical challenges of gas injection using different gas sources are analyzed.It is demonstrated that while all of the above gas injection processes are feasible technically,there may exist economic constraints for some of them.