Scholarlink

<p>This study evaluates the hydrocarbon potential of the Sapphire Field using pyrolysis data from 55 shale samples. Total organic carbon (TOC) ranges from 0.58 to 1.35 wt.%, indicating variable generative potential. Kerogen analysis reveals a mixture of Type II (oil- and gas-prone) and Type III (gas-prone) organic matter, with Type III dominating in the studied samples, indicating primarily thermogenic gas potential with limited oil-generating capacity. Burial history analysis reveals high subsidence rates in the Bilqas (1302.06&#xa0;m/Ma) and Kafr El-Sheikh (1480.84&#xa0;m/Ma) formations, while other formations (El-Wastani, Abu Madi, Qawasim, Sidi Salem, Qantara) exhibit lower rates (198.68–543.25&#xa0;m/Ma). The Kafr El-Sheikh Formation is the primary source rock, entering the early oil window (~ 0.55–0.7% VRo) at 4.48&#xa0;Ma (636&#xa0;m) and progressing to the wet gas window (~ 1.3–2.0% VRo) by 3.18&#xa0;Ma (1454&#xa0;m), persisting today (EASY% VRo model). The Qantara and El-Wastani formations serve as the key reservoirs, while the Bilqas/Mit Ghamr formations act as seals. This analysis clarifies the Sapphire Field’s petroleum system, detailing source rock quality, thermal maturity, and trap formation mechanisms. The Kafr El-Sheikh Formation’s high subsidence and maturation underscore its significance as a major hydrocarbon source/reservoir in the West Delta Deep Marine.</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

Source rock evaluation and basin modeling of Pliocene formations in Sapphire gas field, offshore Nile Delta

  • 期刊论文

  • 发表日期：

    2025年8月13日

查看全文
  • Ahmed Saad Abdel-Rahman,
  • Mohamed Reda,
  • Nabil Ali Abdel-Hafez,
  • Mohamed Abdel-Khalek Mahmoud

摘要

This study evaluates the hydrocarbon potential of the Sapphire Field using pyrolysis data from 55 shale samples. Total organic carbon (TOC) ranges from 0.58 to 1.35 wt.%, indicating variable generative potential. Kerogen analysis reveals a mixture of Type II (oil- and gas-prone) and Type III (gas-prone) organic matter, with Type III dominating in the studied samples, indicating primarily thermogenic gas potential with limited oil-generating capacity. Burial history analysis reveals high subsidence rates in the Bilqas (1302.06 m/Ma) and Kafr El-Sheikh (1480.84 m/Ma) formations, while other formations (El-Wastani, Abu Madi, Qawasim, Sidi Salem, Qantara) exhibit lower rates (198.68–543.25 m/Ma). The Kafr El-Sheikh Formation is the primary source rock, entering the early oil window (~ 0.55–0.7% VRo) at 4.48 Ma (636 m) and progressing to the wet gas window (~ 1.3–2.0% VRo) by 3.18 Ma (1454 m), persisting today (EASY% VRo model). The Qantara and El-Wastani formations serve as the key reservoirs, while the Bilqas/Mit Ghamr formations act as seals. This analysis clarifies the Sapphire Field’s petroleum system, detailing source rock quality, thermal maturity, and trap formation mechanisms. The Kafr El-Sheikh Formation’s high subsidence and maturation underscore its significance as a major hydrocarbon source/reservoir in the West Delta Deep Marine.