塔里木盆地寒武系-奥陶系白云岩潜山勘探新发现与勘探意义

doi:10.3969/j.issn.1672-7703.2017.03.001

摘要/Abstract

摘要： 塔里木盆地寒武系-奥陶系白云岩潜山油气勘探自1989 年塔中1 井获得突破以后，围绕白云岩潜山开展了持续探索，除塔北隆起北部牙哈-英买力寒武系白云岩潜山取得良好勘探开发效果外，塔中隆起-巴楚隆起仅发现了塔中1 和山1 两个出油气井点，区域上展开勘探全部失利，20 多年来塔中隆起-巴楚隆起寒武系-奥陶系白云岩潜山勘探基本处于停滞。2016 年通过重新认识构造模型和重新开展油气成藏条件分析，在麦盖提斜坡和塔中隆起东部优选了罗斯2、中古58 两个白云岩潜山勘探目标进行钻探，均获得高产工业油气流，实现了白云岩潜山勘探的新发现，揭示了台盆区寒武系-奥陶系白云岩潜山领域具有重要勘探价值。通过重新开展二维、三维地震资料解释处理，落实了塔中隆起东部、罗南-鸟山构造带、玛东构造带三大白云岩潜山分布区，有利区带面积达1600km₂。白云岩潜山油气藏具有埋藏相对较浅（3500 ~ 5500m）、勘探效益好等特点，具有较大的勘探潜力。

关键词: 塔里木盆地, 寒武系-奥陶系, 白云岩潜山, 油气成藏条件, 勘探潜力

Abstract: Since the breakthrough was made in Well Central Tarim 1 in 2008, oil and gas exploration in the Cambrian-Ordovician dolomite buried hills has been continued in the Tarim Basin. Except that effective exploration and development was carried out in the Yaha-Yingmaili Cambrian dolomite buried hill in the northern North Tarim uplift, only two wells, Central Tarim 1 and Shan 1, revealed oil and gas in the Central Tarim uplift-Bachu uplift belt. All regional exploration operations failed, and the exploration in the dolomite buried hills in this belt almost stalled for over 20 years. In 2016, after further understanding of the structural model and analysis of the hydrocarbon accumulation conditions, two wells (Ross 2 and Zhonggu 58) were drilled in the Maigaiti slope and the eastern Central Tarim uplift, respectively, and delivered high-yield of industrial oil and gas flow from the dolomite buried hills. This recorded a new discovery in the exploration of dolomite buried hills and indicated the important exploration value in the Cambrian-Ordovician dolomite buried hills. Re-processing and re-interpretation of 2D and 3D seismic data confirmed three dolomite buried hill zones in the eastern Central Tarim uplift, the Luonan- Niaoshan structural belt and the East Mahu structural belt, covering a favorable area of 1600 km₂. Reservoirs in the dolomite buried hills are characterized by shallow depth (3500-5500 m) and high exploration efficiency, showing large exploration potentials.

Key words: Tarim Basin, Cambrian-Ordovician, dolomite buried hill, hydrocarbon accumulation condition, exploration potential

中图分类号:

TE122.1

谢会文, 能源, 敬兵, 朱永峰, 王斌. 塔里木盆地寒武系-奥陶系白云岩潜山勘探新发现与勘探意义[J]. 中国石油勘探, 2017, 22(3): 1-11.

Xie Huiwen, Neng Yuan, Jing Bing, Zhu Yongfeng, Wang Bin. New discovery in exploration of Cambrian-Ordovician dolomite buried hills in Tarim Basin and its significance[J]. China Petroleum Exploration, 2017, 22(3): 1-11.

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