摘要
黄骅坳陷的储集岩有砂岩,碳酸盐岩和火山岩.砂岩是含油的主要储集岩,按其成因可分为河道砂体、三角洲砂体、近岸扇砂体、深水密度流砂体、堡砂坝、冲积扇砂体.这些砂体绝大多数集中在第三系,埋深在1500~4000m.碳酸盐岩储集岩以粒屑灰岩为代表,是第三系渐新统中部的沉积,分布面积广,孔隙性能好.火山岩储层以中生界安山岩为代表.根据对岩芯的观察和大量镜下鉴定,将安山岩的储集空间分为8种类型.
:The reservior beds of Huanghua Depression are composed of sandstone , carbonate rock and volcanic rock.
The main reservior space for oil storage was provided by sandstones . According to their genesis, they may be classified into point bar, delta bar, near shore fan sandbody, deep water high density flow sandbody, barrier bar and alluvium fan sandbody, etc .These sandbodies are all of Tertiary sediments and were formed at the depth of 1500~4000 meters through different diagenesis.
The carbonate rock may be represented by calcarenyte, which was produced in Oligocene and was characterized by its large porosity. It is distributed extensively in the midsouthern depression. The pore of calcarenyte may be classified into the primitive and secondary ones.
The volcanic rock may be represented by andesite. Based on the naked eye and microscope examinations and combining with drilling and production testing data, The reservior space of the andesite oil pool can be classified into 8 types, i.e. vertical fractures,horizontal fractures, network fractures, explosive fractures,intercrystalline fractures (pores and cavities), intracrystalline (cleavage ), gas pores and solution fractures ( pores and cavities). It should be pointed out that the network fractures, intercrystalline fractures and solution fractures are the main reservoir spaces for oil storage.
出处
《现代地质》
CAS
CSCD
1991年第1期69-78,共10页
Geoscience
关键词
储集岩
砂岩
碳酸盐岩
火山岩
成岩
:Huanghua depression, reservoir beds, sandstone, carbonate rock, volcanicrock, diagenesis
