哈拉哈塘油田走滑断裂带控储成藏规律初探

doi:10.11885/j.issn.1674-5086.2018.08.20.02

摘要/Abstract

摘要： 大型走滑断裂带是哈拉哈塘油田奥陶系缝洞型碳酸盐岩控储成藏的关键因素。哈拉哈塘油田位于塔北隆起西斜坡，走滑断裂断距较小，识别难度大，制约了该油田的勘探开发。从哈拉哈塘油田走滑断裂演化特征出发，形成了以多重滤波为基础的地震资料解释性处理研究方法，精细刻画了走滑断裂带，明确断裂空间展布规律，通过开展走滑断裂带控储机理研究，明确了断裂带对油气的疏导作用，形成以断裂带为中心的断溶体油藏描述技术，建立了哈拉哈塘油田断溶体油藏成藏模式，认为断溶体油藏具有“一体一藏”、连通关系复杂的特点，通过精细缝洞雕刻及叠后裂缝预测，提出了哈拉哈塘油田断溶体油藏的评价方法及潜力方向。

关键词: 大型走滑断裂带, 断溶体油藏, 碳酸盐岩储层, 缝洞雕刻, 哈拉哈塘油田

Abstract: Massive strike-slip fault zones are key factors for reservoir formation in the Ordovician fractured-vuggy carbonates. The Halahatang Oilfield is on the western slope of the Tabei Uplift. The fault displacement of the strike-slip faults in this region is relatively small. As a result, it is difficult to identify these faults and thus the exploration and exploitation of the oil field is restricted. This study utilized the evolutionary characteristics of the strike-slip faults in the oilfield and formulated a multiplefiltering-based research method for explanatory processing of seismic data. This was applied to the detailer depiction the strikeslip fault zone in detail and determine the spatial distribution pattern of the faults to investigate the reservoir control mechanism of the strike-slip fault zone. It was found that the strike-slip fault zone enables oil and gas to flow. A descriptive technique for fault-karst carbonate reservoirs based on the fault zone was then developed and a formation model for the fault-karst carbonate reservoirs in the Halahatang Oilfield was established. It was concluded that each of these fault-carbonate reservoirs was formed in one single carbonate system and they were interconnected in a complicated manner. Through detailed carving of fracturedvuggy systems and prediction of fractures after superimposition, an evaluation method is proposed to measure the potential of the fault-karst carbonate reservoirs in the Halahatang Oilfield.

Key words: strike-slip fault zone, fault-karst carbonate reservoir, carbonate reservoir, fractured-vuggy system carving, Halahatang Oilfield

中图分类号:

TE122

张银涛, 孙冲, 王轩, 袁敬一, 尹怀润. 哈拉哈塘油田走滑断裂带控储成藏规律初探[J]. 西南石油大学学报(自然科学版), 2020, 42(1): 10-18.

ZHANG Yintao, SUN Chong, WANG Xuan, YUAN Jingyi, YIN Huairun. Reservoir Formation Patterns in the Strike-slip Fault Zone of the Halahatang Oilfield[J]. 西南石油大学学报(自然科学版), 2020, 42(1): 10-18.

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