柴达木盆地冷湖5号构造油气藏成藏机理

新疆石油地质 ›› 2006, Vol. 27 ›› Issue (4): 435-439.

柴达木盆地冷湖5号构造油气藏成藏机理

孙德强¹, 刘海涛¹, 余辉龙¹, 柳金城², 张涛^2,3

1.中国石油石油勘探开发科学研究院, 北京 100083;
2.中国石油青海油田分公司, 甘肃敦煌 736202;
3.中国石油工程设计有限分公司, 甘肃敦煌 736202

收稿日期:2005-10-14 修回日期:2005-12-09 出版日期:2006-08-01 发布日期:2020-10-19
作者简介:孙德强(1974-), 男, 辽宁西丰人, 工程师, 在读硕士研究生,(Tel) 13552705098(M)(E-mail) sundq111@sina.com.

Mechanisms of Petroleum Accumulation of Structural Reservoir in No.5 Unit of Lenghu Area in Qaidam Basin

SUN De-qiang¹, LIU Hai-tao¹, YU Hui-long¹, LIU Jin-cheng², ZHANG Tao^2,3

1. Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China;
2. Qinghai Oilfield Company, PetroChina, Dunhuang, Gansu 736202, China;
3. China Engineering Design Company Ltd., Qinghai Oilfield Company, PetroChina, Dunhuang, Gansu 736202, China

Received:2005-10-14 Revised:2005-12-09 Online:2006-08-01 Published:2020-10-19

摘要/Abstract

摘要： 冷湖5号构造是柴达木盆地北缘冷湖构造带的重点勘探对象之一,其构造内的冷科1井钻遇侏罗系巨厚生油岩,使冷湖构造带的油气潜力得到充分认可,通过对冷湖5号构造典型油气藏油气成藏模式的解剖,分析得出冷湖5号构造油气藏基本上有两大成藏期,分为深浅两套油气藏、两种油气藏类型。深层(J—E)原生油气藏主要形成于E₃—N₁,浅层(N)次生油气藏形成于N₂末以后。浅层油气藏成熟度低于深层。浅层(N)油气藏具有早期充注、晚期成藏的特点;深层(E)油气藏具有早期成藏、长期充注的特点。

关键词: 柴达木盆地, 冷湖构造带, 烃源岩, 生油窗, 油气运移, 油气聚集

Abstract: No.5 unit of Lenghu area is one of important targets for exploration of Lenghu structural zone in northern margin of Qaidam basin, where the huge source rocks of Jurassic was found by Well Lenke-1, thus demonstrating its abundant source potentials in this area. This paper presents the typical mode of hydrocarbon accumulation of structural reservoirs in Lenghu-5 structural zone, showing that there exist two stages of hydrocarbon accumulation, accordingly forming two sets and types of reservoirs. One is deep and the other is shallow. The original deep one (J-E) was formed during E₃-N₁, and the secondary shallow one (N) formed after end of N₂. The shallow one is lower than the deep one in hydrocarbon maturity; the former is characterized by early charging and late forming, and the latter is by early forming and long-term charging.

Key words: Qaidam basin, Lenghu structural zone, source rock, oil-generating window, hydrocarbon migration, hydrocarbon accumulation

中图分类号:

TE111

孙德强, 刘海涛, 余辉龙, 柳金城, 张涛. 柴达木盆地冷湖5号构造油气藏成藏机理[J]. 新疆石油地质, 2006, 27(4): 435-439.

SUN De-qiang, LIU Hai-tao, YU Hui-long, LIU Jin-cheng, ZHANG Tao. Mechanisms of Petroleum Accumulation of Structural Reservoir in No.5 Unit of Lenghu Area in Qaidam Basin[J]. Xinjiang Petroleum Geology, 2006, 27(4): 435-439.

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