摘要:塔里木盆地哈拉哈塘地区石油勘探开发进入深度高达8 000 m的坳陷区，油气主要沿走滑断裂带分布，研究超深层断控油气藏分布规律对油气勘探开发具有重要意义。通过大量勘探开发资料分析与油藏解剖表明，哈拉哈塘地区奥陶系碳酸盐岩油气沿主断裂带1.8 km范围内条带状分布，高效井主要分布在距主断裂带600 m范围内。油气沿断裂带分布具有分段性，断裂的类型、规模与性质影响油气运聚成藏，油气富集主要受控于主断裂带的规模。高效井一般距主断裂近、储层规模大、侧向封闭好，为断控缝洞型碳酸盐岩油藏。走滑断裂断控油气藏不同于礁滩体与风化壳“相控”油气藏，对复杂碳酸盐岩油气藏评价开发具有重要意义。
关键词: 走滑断层/
碳酸盐岩/
油藏/
分布/
成藏模式
Abstract:Oil occurred in large areas with depth up to 8 000 m in Halahatang area of the Tarim Basin, and mainly along the strike-slip fault zones. Through the exploration and development data, and single well analysis, it is demonstrated that the strike-slip faults control the distribution and enrichment of oil in Halahatang area. The oil and gas are stripped distributed along the majoe fault zones within the distance of 1.8 km to fault cores, and high efficient wells are mainly distributed within 600 m to major fault. Fault type, size and nature, particularly of the size of the fault zone, play an important impact on hydrocarbon enrichment, and resulted in the oil and gas distribution segmentation. High efficient wells generally have a combination of five elements such as regional nose-like structure background, close to the oil-source fault, localized structure high, large scale reservoir, better vertical and lateral sealing. These suggest the carbonate oil resources are fault controlled and quite different from the reservoir-controlled resources. The fault controlling effects on the oil accumulation and enrichment are significant for the oil exploration and development in super-depth basin.
Key words:Strike-slip fault/
Carbonate/
Oil reservoir/
Distribution/
Accumulation model
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