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重新认识鄂尔多斯盆地油气地质学
引用本文:李德生.重新认识鄂尔多斯盆地油气地质学[J].石油勘探与开发,2004,31(6):2-0.
作者姓名:李德生
作者单位:中国石油勘探开发研究院
摘    要:鄂尔多斯盆地显生宙沉积巨厚,是一个多旋回叠合的克拉通盆地。盆地内已勘探开发的4套含油气系统均属地层岩性油气藏,十三叠统延长组砂岩油藏为实低渗透率油藏;下保型统延安组砂岩油藏为中-低渗透率岩性油藏;下奥陶统马家沟组为低渗透率碳酸盐岩风化亮气服;下二叠统山西组及下石盒子组为河流相低渗透中砂岩气藏。自1907年在延长城西钻成我国陆上第一口油井以来,延长油矿已历经百年勘探开发历程,掌握了适应特低渗透率浅油层的勘探开发工艺技术并不断向前发展,企业愈办愈兴旺。多元化的经营方式使特低渗透率油藏开发呈现出蓬勃发展的局面;延长油矿2003年产油230万t,历年累计产油1321万t;延安、桂林二地区14个县钻采公司2003年产油330万t,历年累计产油1301万t;加上中国石油长庆石油勘探局2003年产油701万t,历年累计产油6489万t,2003年盆地内共有油井2万口,年产油1262万t,历年累计产油0121万t,为老区的经济建设做出了重要贡献。图9表3参12照片2

关 键 词:鄂尔多斯盆地  延长油田  长庆油田  低渗透率储集层
文章编号:1000-0747(2004)06-0001-07
修稿时间:2004年9月2日

Return to petroleum geology of Ordos Basin
LI De-sheng.Return to petroleum geology of Ordos Basin[J].Petroleum Exploration and Development,2004,31(6):2-0.
Authors:LI De-sheng
Affiliation:Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China
Abstract:Ordos Basin, a polycyclically superimposed basin, covered about 32×104km2. Thick Phanerozoic sediments generally maintained sub-horizontal strata. The four petroleum systems explored and developed in the basin are all stratigraphic-lithologic reservoirs: super-low-permeability sandstone reservoirs of Yanchang Formation, Upper Triassic; middle-low permeability sandstone reservoirs of Yan'an Formation, Lower Jurassic; low-permeability carbonate gas reservoirs of Majiagou Formation, Lower Ordovician; and low-permeability fluvial sandstone gas reservoirs of Shanxi and Lower Shihezi Formation, Lower Permian. Since the drilling of the first onshore production well in western Yanchang City in 1907, the Yanchang Oilfield has been explored and developed for about 100 years. Due to the exploration and development progress for the shallow super-low permeability reservoirs, the crude oil production of Yanchang Oilfield reached 230×104t/a and its cumulative oil production reached 1321×104t by the end of 2003. The oil production of 14 drilling-production companies under the Yan'an and Yulin local county reached 330×104t/a and its cumulative oil production reached 1301×104t. The oil output of Changqing Petroleum Exploration Bureau, CPNC, was 701×104t in 2003 and its cumulative oil production reached 6489×104t. By the end of year 2003, there are 2×104 oil wells in the Ordos Basin, the oil production rate reached 1262×104t/a and its cumulative oil production was 9121×104t.
Keywords:Ordos Basin  Yanchang Oilfield  Changqing Oilfield  low-permeability reservoirs
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