石油学报 ›› 1995, Vol. 16 ›› Issue (1): 10-16.DOI: 10.7623/syxb199501002

• 地质勘探 • 上一篇    下一篇

柴达木盆地东部第四系典型气藏特征

吴光大   

  1. 青海石油管理局勘探开发研究院
  • 收稿日期:1992-12-15 修回日期:1994-03-04 出版日期:1995-01-25 发布日期:2013-07-08
  • 作者简介:吴光大,1980年毕业于江汉石油学校.现为青海石油局勘探开发院工程师.通讯处:甘肃省敦煌市七里镇.邮政编码:736202.

THE FEATUKE OF TYPICAL QUATERNARY GAS RESERVOIRS IN EASTERN PART OF QIDAM BASIN

Wu Guangda   

  1. Research Institute of Petroleum Exbloration and development, Qinghai Petroleunm Administration Bureau
  • Received:1992-12-15 Revised:1994-03-04 Online:1995-01-25 Published:2013-07-08

摘要: 柴达木盆地东部地区是第四纪的沉积与沉降中心,内陆湖泊相的沉积厚度大、分布广泛。小幅度同沉积构造发育,是天然气生成、运移和聚集的有利地区。由于含气地层新、埋藏浅、厚度大、构造条件简单,气藏特征独特具有典型意义。柴达木盆地东部地区经过三十多年的勘探,发现了一批第四系天然气田。台南气田是近年来发现的规模较大、特征典型的高产气田。本文从构造形态、沉积柑模式、储集层类型和含气异常信息等方面分析了气藏的地质与地球物理特征,和特殊的地质结构与独特的地震异常之间的关系,以及气田高产富集的因素。

关键词: 柴达木盆地, 气藏, 沉积构造, 低速, 异常, 分析

Abstract: The eastern part region of Qidam basin is a Quaternary depositional and subsidence center being large and extensively distributed.The development of contemporaneously depositional structures developrnent is small in range. This region is favorable area for gas generation, migration and accumulation. The gas bearing formation is younger and shallow,thethickness is big,the structures conditions are sirnple,and the gas reservoir has. a unique andtypical feature. Tainan gas field is a prolific gas field discovered in recent years with typicalfeature and is a large one. This paper analyzes the geological and geophysical feature of gasreservoir from structure morphological feature,sedirnentary facies model,gas reservoir typeand abnormal information in gas-containing etc. demonstrates the relations between the special geological texture and unique seismic abnormal;analyzed the high production rate andabundance factors of gas fields. It is important to both optimum exploration and developmentprogram, and also gives some reference for areas with similar seismic and geological conditions.

Key words: Qidam basin, gas reservoir, edimentary structure, low speed, anomaly, analysis