摘要
百色盆地灰岩基岩油藏为新生古储、储集空间为孔、洞、缝复合型油藏,有过两次进油过程。风化壳体油藏主要接受早期进油,储集空间以剥蚀阶段形成的溶蚀孔、洞、缝为主;潜山内部层状油藏,主要接受晚期进油,储集空间以喜山期形成的裂隙为主。上法地区造隙时期主要有:印支褶皱运动形成的构造裂隙、抬升剥蚀期的淋滤溶蚀孔隙和喜山断裂运动形成的张开裂缝。其中剥蚀期的溶蚀作用绝大部分是沿着印支期形成的充填裂缝内进行。因此,印支运动裂隙的发育程度决定了后来溶蚀孔、缝、洞的发育程度,同时亦决定了潜山油藏的储集性能。
The basement limestone oil pool in Baise basin is a complex double po- rosity reservoir being characterized hy newly generated oil anciently reser- voired in ancient reservoir formations,and is characterized by twice oil en- trances.The residuum oil pool mainly receives early oil entrance with chief of corroded pores,cavities and fractures formed during denudation stage as reservoir spaces.The inner-buried hill stratigraphic oil pool receives late oil with fissures formed during Himalayan stage as reservoir space chiefly. There are mainly three stages of fracture formation in Shangfa district. structural fissures formed during Indo-China folding movement,leaching pores formed during uplifting denudation stage,and open fractures formed by Himalayan faulting movement,in which most part of corrosion during denudation stage is conducted along the infilled fractures formed during Indo-China stage,and therefore,the rate of fracture development during Indo-China movement determines the rate of development of subsequent corroded pores,fractures and cavities,and determines the overall reservoir features of the buried hill oil pools simultaneously.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
1992年第3期93-99,共7页
Petroleum Exploration and Development
