海拉尔盆地岩性、地层油气藏勘探前景
|
摘要
文中利用海拉尔盆地的三维地震资料可识别出断裂坡折带、沉积坡折带、侵蚀坡折带三类坡折带,其中以断裂坡折带最为发育,后两种坡折带在海拉尔盆地分布局限;根据油气藏形成的主要成因,将岩性、地层油气藏分为七个亚类,其中缓坡断裂坡折带控制岩性上倾尖灭油气藏、岩性透镜体油气藏、地层超覆油气藏,陡坡断裂坡折带控制砂砾岩体油气藏、地层超覆油气藏,潜山油气藏发育于断裂或侵蚀坡折带的上方,不整合及断裂坡折带共同控制地层不整合油气藏,古河道砂岩油气藏一般位于坡折带附近的洼陷带。可见坡折带及其附近是岩性、地层油气藏发育的有利场所。
The paper used 3-D seismic data in Haila’er basin to identify three kinds of slope break zones—faulted slope break, sedimentary slope break and erosion slope break, among which the faulted sloped break is more developed and the latter two slope breaks has limited distribution in Haila’er basin; the litho-stratigraphic reservoirs were divided into 7 subclasses according to main genesis of oil/gas reservoirs, among which the gentle-slope faulted slope break zone controls lihtologic updip pinchout oil/gas reservoir, lithologic lens reservoir and overlap reservoir; the steep-slope faulted slope break zone controls sand/gravel stone reservoir and overlap reservoir; buried hill reservoir is developed above the faulted or erosion slope break zones, inconformity and faulted slope break control jointly inconformity reservoir; palaeochannel sandstone reservoir is generally located in the sub-sag near slope break zone. It is thus clear that the slope break zone and surroundings are the fields of interest for developing litho-stratigraphic oil/gas reservoirs.
The paper used 3-D seismic data in Haila’er basin to identify three kinds of slope break zones—faulted slope break, sedimentary slope break and erosion slope break, among which the faulted sloped break is more developed and the latter two slope breaks has limited distribution in Haila’er basin; the litho-stratigraphic reservoirs were divided into 7 subclasses according to main genesis of oil/gas reservoirs, among which the gentle-slope faulted slope break zone controls lihtologic updip pinchout oil/gas reservoir, lithologic lens reservoir and overlap reservoir; the steep-slope faulted slope break zone controls sand/gravel stone reservoir and overlap reservoir; buried hill reservoir is developed above the faulted or erosion slope break zones, inconformity and faulted slope break control jointly inconformity reservoir; palaeochannel sandstone reservoir is generally located in the sub-sag near slope break zone. It is thus clear that the slope break zone and surroundings are the fields of interest for developing litho-stratigraphic oil/gas reservoirs.
引文
[1]林畅松等.构造坡折带———断陷盆地层序分析和油气预测的重要概念.地球科学(中国地质大学学报),2000,25(3):260~266
[2]王英民等.断陷湖盆多级坡折带的成因类型、展布及其勘探意义.石油与天然气地质,2003,24(3):199~203
[3]Van Wagoner J Cet al.Siliciclastic sequence stratigra-phy in well logs,cores and outcrops:conceots for high-resolution correlation of ti me and facies.AAPG,Methods in Exploration Series7,1990,(55):1~240
[4]张善文等.应用坡折带理论寻找隐蔽油气藏.石油勘探与开发,2003,30(3):5~7
[5]王英民等.准噶尔大型拗陷湖盆坡折带的类型和分布特征.地球科学,2002,27(5):683~688
[6]刘豪等.拗陷湖盆坡折带特征及其对非构造圈闭的控制.石油学报,2004,25(2):30~35
[2]王英民等.断陷湖盆多级坡折带的成因类型、展布及其勘探意义.石油与天然气地质,2003,24(3):199~203
[3]Van Wagoner J Cet al.Siliciclastic sequence stratigra-phy in well logs,cores and outcrops:conceots for high-resolution correlation of ti me and facies.AAPG,Methods in Exploration Series7,1990,(55):1~240
[4]张善文等.应用坡折带理论寻找隐蔽油气藏.石油勘探与开发,2003,30(3):5~7
[5]王英民等.准噶尔大型拗陷湖盆坡折带的类型和分布特征.地球科学,2002,27(5):683~688
[6]刘豪等.拗陷湖盆坡折带特征及其对非构造圈闭的控制.石油学报,2004,25(2):30~35
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心