新疆石油地质

新疆石油地质 ›› 2007, Vol. 28 ›› Issue (6): 700-703.

• 油气勘探 • 上一篇    下一篇

准噶尔盆地中部第3区块侏罗系、白垩系油气成藏主控因素

袁海锋1, 徐国盛1, 董臣强2, 王军2, 廖峰1   

  1. 1.成都理工大学 油气藏地质及开发工程国家重点实验室, 成都 610059;
    2.中国石化 胜利油田有限责任公司 新疆勘探开发分公司, 山东 东营 257015
  • 收稿日期:2006-12-30 出版日期:2007-12-01 发布日期:2020-08-03
  • 作者简介:袁海锋(1980-), 男, 河南商水人, 在读博士研究生, 石油地质,(Tel) 13281886328(E-mail) yhf870@sina.com.
  • 基金资助:
    国家重点基础研究发展规划“973”项目, 中国典型叠合盆地深部流体与浅部流体相互作用及其成藏效应(G1999043309)资助

Factors of Hydrocarbon Accumulation of Jurassic-Cretaceous in Block-3 of Central Junggar Basin

YUAN Hai-feng1, XU Guo-sheng1, DONG Chen-qiang2, WANG Jun2, LIAO Feng1   

  1. 1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu, Sichuan 610059, China;
    2. Xinjiang Division of Exploration and Development; Shengli Oilfield Company Ltd., Sinopec, Dongying, Shandong 257015, China
  • Received:2006-12-30 Online:2007-12-01 Published:2020-08-03

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摘要： 准噶尔盆地中部3区块侏罗-白垩系的油气成藏主要受烃源岩、沉积相、古隆起、异常压力、断裂及不整合的控制。多套烃源岩的多期生烃为该区成藏提供了雄厚的物质基础;有利沉积相带内优质储集层的发育为油气提供了储集空间;异常高压与岩性双重封堵阻止了油气的逸散;古隆起发育与演化控制了圈闭的形成和发育;早期形成的断裂沟通了源岩和储集砂体,后期断裂和不整合面的组合可以作为流体运移的“立体、网状输导”通道,使油气成藏得以实现。确定了侏罗-白垩系油气的成藏期次,建立了油气成藏模式。该区块油气成藏特征可概括为“多期生烃,混源充注,断裂不整合高效输导,晚期改造成藏定型”

关键词: 准噶尔盆地, 成藏主控因素, 成藏期次, 成藏模式, 中部3 区块

Abstract: The hydrocarbon accumulation of Jurassic and Cretaceous in Block-3 of central Junggar basin is mainly controlled by source rock, sedimentary facies, palaeo-uplift, abnormal pressure, fault and unconformity. The multi-phase hydrocarbon generations of multisource rocks offer rich material base. The development of premium reservoir rocks within the favorable sedimentary facies belt provides spaces for hydrocarbon accumulation. The abnormal high pressure and lithology could serve as sealing process, preventing from hydrocarbon diffusion. Paleo-uplift controls the formation and development of traps. Early formed faults link with source rocks and reservoir sands, and late formed fault-unconformity assemblage can serve as dimensional and reticulate pathway of fluid migration. All these factors allow the hydrocarbon accumulation to be formed here. Base on these characteristics, the accumulation stage is determined, and the accumulation model is established. The accumulation characteristics can be summarized as "multi-stage hydrocarbon generation, mixed source charge, fault-unconformity conduction, and ultimate reservoir formation by rebuilding at late period".

Key words: Junggar basin, controlling factor, stage, model, Block 3

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