REFORM IN BASIN AND ITS SIGNIFICANCE IN PETROLEUM GEOLOGY

Zhang Kang

doi:10.11743/ogg20000109

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REFORM IN BASIN AND ITS SIGNIFICANCE IN PETROLEUM GEOLOGY
Vol. 21, Issue 1, Pages: 38-41(2000)
Online First：25 March 2000，

Published：2000
DOI： 10.11743/ogg20000109
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DOI：

Zhang Kang. REFORM IN BASIN AND ITS SIGNIFICANCE IN PETROLEUM GEOLOGY[J]. 2000, 21(1): 38-41. DOI： 10.11743/ogg20000109.

摘要

改造型盆地是指原型沉积盆地在后期构造运动中受到较明显的改造

而改造较弱的简单深埋和微弱侵蚀者仍可归入原型沉积盆地范畴。就油气勘探而言

盆地实际上是指联片分布的沉积岩体。以储量而论

改造型盆地中油占一半

气占70%以上

其探明程度较低

是下世纪勘探的主要指向。在盆地改造研究中区域性不整合面具有重要意义

可把该面及上下地层作为一特殊地质体来分析其对油气的影响。地壳的多旋回开合运动是认识盆地改造和油气复杂演化过程的钥匙。勘探者要把从原型和改造保存现状入手的正向和反向思维方式结合起来探索油气藏。

Abstract

The reformed basins were the prototype basins which were evidently reformed during post-stage structural movements;those underwent weak erosion and reformation are still prototype basins.As for oil and gas exploration

basin means connectedly distributed sedimentary rock mass;as for the reserves

about 50% of oil reserves and 70% of gas reserves are in reformed basins.Those basins are the main targets of hydrocarbon exploration in the 21st century since their exploration degree is low.In the research of basin reformation

regional uncomformity is an important factor in influencing the oil and gas distribution of the basins

thus the uncomformity and the strata above and below it should be taken as a special geological body.The multicycle opening-closing movement of the crust is the key to understand the basin reformation and its hydrocarbon evolution.One should investigate the oil and gas pools by means of the positive and opposite thinkings of the prototype and present basins.