石油与天然气地质 ›› 2014, Vol. 35 ›› Issue (5): 601-608.doi: 10.11743/ogg20140503

• 油气地质 • 上一篇    下一篇

南堡凹陷拾场次洼的构造-沉积特征及其对岩性油藏勘探的影响

刘君荣1, 王晓文1, 赵忠新1, 张磊2,3, 李杰1, 路鹏飞1   

  1. 1. 中国石油 冀东油田分公司, 河北 唐山 063004;
    2. 中国石油大学 油气资源与探测国家重点实验室, 北京 102249;
    3. 中国石油大学 盆地与油藏研究中心, 北京 102249
  • 收稿日期:2014-02-10 修回日期:2014-06-20 出版日期:2014-10-08 发布日期:2014-10-17
  • 第一作者简介:刘君荣（1981- ），女，硕士，构造沉积分析。E-mail：liujunrong@petrochina.com.cn。
  • 基金项目:

    国家科技重大专项（2011ZX05006-05，06）。

Tectonic-sedimentary characteristics and their influences on the forming of lithologic hydrocarbon reservoirs in the Shichang Subsag of the Nanpu Sag

Liu Junrong1, Wang Xiaowen1, Zhao Zhongxin1, Zhang Lei2,3, Li Jie1, Lu Pengfei1   

  1. 1. Jidong Oilfield Company, PetroChina, Tangshan, Hebei 063004, China;
    2. State Key Laboratory for Petroleum Resource and Prospecting, China University of Petroleum, Beijing 102249, China;
    3. Basin and Reservoir Research Center, China University of Petroleum, Beijing 102249, China
  • Received:2014-02-10 Revised:2014-06-20 Online:2014-10-08 Published:2014-10-17

PDF (PC)

4676

被引次数

10

摘要：

南堡凹陷拾场次洼是冀东油田的一个勘探开发老区，构造油藏基本已经探明，并投入开发，急需寻找新的勘探接替领域。通过研究南堡凹陷拾场次洼构造演化、沉积体系分析和构造-沉积格局对岩性圈闭形成的控制作用，建立拾场次洼岩性油藏成藏模式，为今后的勘探提供理论基础。拾场次洼在沙河街组沉积早期，物源主要来自于洼陷东部柏各庄断层上升盘凸起区，沿柏各庄断层下降盘发育多个扇三角洲沉积体系，向洼陷内进积较远。在西部西南庄断层下降盘发育小型扇三角洲、滨浅湖及半深湖沉积。在沙河街组沉积后期，柏各庄断层活动加剧，早期沉积的地层产状发生了反转，导致沙河街组沉积早期由柏各庄断层上升盘来的向洼陷进积的砂体，转变为上倾尖灭的砂体。这些砂体与洼陷内向西抬升的构造，配合形成上倾尖灭圈闭。这些圈闭形成了拾场次洼最重要的砂岩上倾尖灭油藏，具有多层富集，油藏规模大和多油水系统的特征。

关键词: 成藏模式, 岩性油藏, 沙河街组, 拾场次洼, 南堡凹陷

Abstract:

Shichang Subsag of Nanpu Sag is an old exploration and development area of Jidong Oilfield,the its main structural reservoir has been proven,and put into development.The next is to find new areas torelay.In this paper,the lithologic reservoir accumulation mode is established through research and analysis of tectonic evolution,sedimentary system and their controlling role on lithologic traps.That provides a theoretical basis for future exploration.In the early Shahejie Formation(Es)period,the provenance was mainly from the bulge on the upthrown side of Baigezhuang fault in the east of subsag.There existed multiple fan-delta systems along the Baigezhuang downthrown side and they prograded far towards the subsag center.Meanwhile,small fan-delta,shallow lake and semi-deep lake sediments distributed along the downthrown side of Xinanzhuang faults in the west.In the late Es,the activity of Baigezhuang fault leaded to the inversion of early strata attitute.And the early downlap sandbody pinched on the slope, forming a updip pinchout type deposition mode.These sand bodies and sub-sag cooperated with west uplift tectonic introversion to form the updip pinchout trap,which formed the most important lithologic reservoirs in Shichang Subsag.These reservoirs have the characteristics of multi-strata-enrichment,large-scale and multi-oil-water systems.

Key words: accumulation mode, lithologic reservoir, Shahejie Formation, Shichang Subsag, Nanpu Sag

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