百色盆地东部坳陷北部陡坡带岩性油气藏勘探研究

百色盆地东部坳陷北部陡坡带划分为构造型、岩性和复合型 ,并已发现子寅、仑圩、塘寨、花茶四个油田 ,已探明石油地质储量 82 7× 10 4t,控制储量 12× 10 4t,预测储量 4 9× 10 4t,勘探已证实该区带是一个油气富集带。该区在始新世那读 -百岗期发育一系列冲积扇、扇三角洲及湖底扇 ,并在花茶地区分布有孔、缝、洞发育的三叠统灰岩 ,且存在多层系、多类型的复合型有利含油气圈闭 ;综合该区岩性油气藏的分布规律及其生储盖组合特征 ,并对有利的勘探目标进行分析、评价优选 ,各项证实了该区是岩性隐蔽油气勘探的最有利区块之一。

The Oil and Gas Accumulation Exploration of the North Scarp Zone in the Baise Basin

It has been found 4 oil and gas fields such as Ziyin,Lunyu,Tangzha and Huacha in the Baise Basin.And the explored capacity of this area is 827×10⁴t.The controled reserves is 12×10⁴ t.The predicted reserves is 49×10⁴ t.So this area is a oil and gas enrichment zone.A series of the alluvial fans,the delta fans and the sublacustrine fans has been discovered in Nadu and Baigang formations.The limestone in Triassic period developed with a lot of solution caves,pores and fractures.The favorable prospecting targets and lithological traps are analysed. And it is one of the most advantageous zones to find oil and gas accumulation of lithology.