墨西哥Perdido带上Wilcox组油藏富集模式分析

doi:10.11885/j.issn.1674-5086.2019.03.11.02

摘要/Abstract

摘要： 为了明确Perdido带上Wilcox组油藏富集控制因素，以上Wilcox组油藏为研究对象，通过有效供烃范围、油输导方式、圈闭形成与生排烃期匹配关系及保存条件对比分析，探讨了Perdido带上Wilcox组油藏富集控制因素及成藏模式。研究认为，供烃区规模对油藏规模控制作用明显；上Wilcox组油藏存在顺源式、向源式和背源式3种垂向运移方式，其中，顺源式和向源式运移有利于油藏富集；圈闭形成与生排烃期匹配较好的油藏，供烃充足，油藏规模大；保存是油藏富集的必要条件，遭受严重破坏的油藏规模小；建立了Perdido带上Wilcox组3种油藏成藏模式，其中，“双侧供烃-顺源输导”和“单侧供烃-向源输导”有利于油藏富集，是该区寻找规模性油藏的有利模式。

关键词: 墨西哥, Perdido带, 上Wilcox组, 油藏富集控制因素, 成藏模式

Abstract: To determine the controlling factors of oil enrichment in the Upper Wilcox Formation of Perdido Belt, the commercial and non-commercial fields of the Upper Wilcox are taken as the research objects. This study integrates the analysis of effective hydrocarbon supply range, oil and gas transmission mode, matching relationship between trap formation and hydrocarbon generation and expulsion period and preservation conditions. The study discusses the controlling factors of oil and gas enrichment in Wilcox Formation and petroleum accumulation model. The study shows that the scale of hydrocarbon supply area has obvious control effect on field scale; there are three vertical migration modes in the Upper Wilcox Formation, i.e. along-source, toward-source and back-source. Among them, along-source and toward-source migration modes are advantageous. Trap formation and hydrocarbon generation-expulsion period match well, hydrocarbon supply is sufficient and reservoir scale is large; It is a necessary condition for oil enrichment and a small scale of seriously damaged reservoirs. Three accumulation models of Upper Wilcox Formation in Perdido Belt are established, among which“ double supply along-source” and“ single supply toward-source” are favorable for oil enrichment and are favorable models for searching large size fields in Perdido Belt.

Key words: Mexico, Perdido Belt, Upper Wilcox Formation, oil enrichment factors, accumulation model

中图分类号:

TE122

李冬, 黄兴文. 墨西哥Perdido带上Wilcox组油藏富集模式分析[J]. 西南石油大学学报(自然科学版), 2020, 42(4): 73-82.

LI Dong, HUANG Xingwen. An Analysis of the Oil Enrichment Factors and Accumulation Models of the Upper Wilcox Formation of Perdido Belt, Mexico[J]. 西南石油大学学报(自然科学版), 2020, 42(4): 73-82.

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