摘要
塔里木油田地处边疆和沙漠,地面条件恶劣,97%以上的油气藏埋藏深,一般在3 200-6 100 m,按效益最大化原则采用＂稀井高产＂开发,水平井因其明显的增产和提高采收率优势得到广泛应用。目前已建立了不同类型油气藏的水平井开采模式,在巨厚砂岩块状底水油藏、低幅度层状边水油藏、大面积超深低丰度薄层油藏、碳酸盐岩潜山油气藏、凝析气藏等不同油气藏类型中,应用水平井采油、水平井注水、循环注气等方式开发,在新油田产能建设、老油田综合调整中取得显著效益。至2007年12月,塔里木油田已完钻水平井超过260口,占总井数比例近30%,年产油量占全油田的61%,水平井平均单井日产油量是直井的1.73倍,实现了塔里木油田整体高效开发。
Tarim Oilfield is located in the frontier and desert,the surface conditions are bad,and more than 97% of the oil and gas reservoirs are deeply buried,generally 3 200-6 100 m.According to the principle of maximum benefit,a ＂wide-spacing,high-productivity＂ style is applied in production,and the application of horizontal well is more and more extensive because of its obvious advantage of production stimulation and EOR.Now horizontal well exploitation patterns have been established for different oil and gas reservoirs,for instance,very thick sandstone blocky bottom water oil reservoir,low-amplitude layered edge water reservoir,large area ultra-deep low-abundance thin reservoir,carbonate buried hill hydrocarbon reservoir,condensate gas reservoir.Horizontal well production,horizontal well water injection,cyclic gas injection and other measures have made significant benefits in the productivity construction of new oil fields and EOR projects.By December 2007,Tarim Oilfield has drilled over 260 horizontal wells,accounting for about 30% of the total wells,the annual output of the horizontal wells accounted for 61% of the whole oil field,and the average daily output of single horizontal wells was 1.73 times that of vertical wells.It has achieved the aim of the whole and highly effective development in the Tarim Oilfield.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2010年第6期716-725,共10页
Petroleum Exploration and Development
关键词
塔里木油田
水平井
开发模式
典型油气藏
高效开发
Tarim Oilfield
horizontal well
development style
typical oil and gas reservoir
highly effective development
