Scholarlink

Abstract <p>The potential of oil and gas bearing of Kenya’s continental margin in the Lamu Basin is analyzed. The Lamu Basin is the largest sedimentary basin on the territory of Kenya. The summary stratigraphic section is represented by Paleozoic, Mesozoic, and Cenozoic sediments with a thickness up to 12 km. The sedimentary history of the Lamu Basin is characterized by four major groups of sandstone mega-sequences, which formed from the Permian–Carboniferous to the Tertiary: the Karoo, Sabaki, Tana, and Coastal groups. There are differed between themselves by grainy, porosity, permeability, compacted and cementation. Each mega-sequence is separated by discontinuities in sedimentation or discordances. The mega-sequences comprise sandstones of continental rift basins, fluvial and deltaic sandstones, and marine sandstones origin. They occur in grabens and half-grabens, forming in period of intracratonic sedimentation, which took place at the breakup of Gondwana in East Africa, when Madagascar separated from Africa in the Early Cretaceous. Bounded by faults the Lamu basin is characterized by transgressive and regressive cycles. Tectonic discordances and eustatic movements in the Late Mesozoic and Cenozoic resulted in the formation of source rocks and reservoir pays in which could oil and gas and seals may have occurred. Potential source rocks type of kerogen ranging from I to III. The more widespread is the III type of kerogen and this type is dominant in gas bearing zone of Lamu basin. Organic enriching deposites by carbon (TOC) of late Cretaceous is considerably higher than in Paleogene and late Jurassic. Terrigenous reservoirs are dominant in region, however carbonate reservoirs occurs in Miocene Analysis of 11 discoveries fields shows that the dominant pays in fields on the continental margin of the Lamu Basin are situated in the Late Cretaceous and Paleogene. The oil and gas bearing potential at continental margin in the Lamu Basin is great, in particular, in the deep water part of the basin, at the slope.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Continental Margin of Kenya—Geological Structure and Oil and Gas Bearing Prospects

  • 期刊论文

  • 发表日期：

    2026年2月1日

查看全文
  • A. Zabanbark,
  • L. I. Lobkovsky

摘要

Abstract

The potential of oil and gas bearing of Kenya’s continental margin in the Lamu Basin is analyzed. The Lamu Basin is the largest sedimentary basin on the territory of Kenya. The summary stratigraphic section is represented by Paleozoic, Mesozoic, and Cenozoic sediments with a thickness up to 12 km. The sedimentary history of the Lamu Basin is characterized by four major groups of sandstone mega-sequences, which formed from the Permian–Carboniferous to the Tertiary: the Karoo, Sabaki, Tana, and Coastal groups. There are differed between themselves by grainy, porosity, permeability, compacted and cementation. Each mega-sequence is separated by discontinuities in sedimentation or discordances. The mega-sequences comprise sandstones of continental rift basins, fluvial and deltaic sandstones, and marine sandstones origin. They occur in grabens and half-grabens, forming in period of intracratonic sedimentation, which took place at the breakup of Gondwana in East Africa, when Madagascar separated from Africa in the Early Cretaceous. Bounded by faults the Lamu basin is characterized by transgressive and regressive cycles. Tectonic discordances and eustatic movements in the Late Mesozoic and Cenozoic resulted in the formation of source rocks and reservoir pays in which could oil and gas and seals may have occurred. Potential source rocks type of kerogen ranging from I to III. The more widespread is the III type of kerogen and this type is dominant in gas bearing zone of Lamu basin. Organic enriching deposites by carbon (TOC) of late Cretaceous is considerably higher than in Paleogene and late Jurassic. Terrigenous reservoirs are dominant in region, however carbonate reservoirs occurs in Miocene Analysis of 11 discoveries fields shows that the dominant pays in fields on the continental margin of the Lamu Basin are situated in the Late Cretaceous and Paleogene. The oil and gas bearing potential at continental margin in the Lamu Basin is great, in particular, in the deep water part of the basin, at the slope.