“Novel approach to detect AVO anomalies supported by direct hydrocarbon indicators in the deep Miocene of the offshore Mediterranean, Egypt

Title : “Novel approach to detect AVO anomalies supported by direct hydrocarbon indicators in the deep Miocene of the offshore Mediterranean, Egypt

Abstract:

To counteract declining in the production and ensure project economic viability, success in exploiting deep Miocene targets is crucial, following decades of focusing on shallow Pliocene targets. Utilizing the Amplitude Versus Offset (AVO) Class-III approach, all identified fields were drilled. Pre-Messinian wells typically exhibit water sand characteristics with a distinct hark-kick response, classified as AVO class I. This paper introduces a methodology designed to detect soft-kick gas sand supported by Direct Hydrocarbon Indicators (DHI) in the Miocene.

The workflow commences with the rock physics study to examine the feasibility of all potential scenarios for AVO class-II soft kick in the Miocene region. A fluid substitution technique was employed to generate well logs exhibiting gas responses. Subsequently, comprehensive research was conducted to monitor all possible scenarios of soft kick gas sand and its properties. Subsequently, a stochastic Monte Carlo simulation was utilized to construct the AVO class-II scenarios.

Subsequently, numerous opportunities were created with identical finalized situations to provide DHI assistance for AVO class-II soft kick. The seismic signature of this Avo class-II is a subtle, gentle impulse in the seismic data that appears brighter in the far stack. A study of the results helps to estimate the probability of success for exploration prospects with a low to transparent seismic amplitude (AVO class-II). Geological derisking was also examined to reduce the risks associated with these new opportunities.

Audience Take Away:

• They will try to extract DHI for deep targets.
• They will increase the portfolios that including deep targets anomalies with DHI that not clear before.
• Yes, the issue that the shallow targets in general have DHI support low risk. The deep targets not have clear or easily to extract the DHI. This research help to extract DHI for deep targets with low risk.

Biography:

Ramy Fahmy is a Senior Geophysicist with over 15 years at Rashid Petroleum Co., Shell Egypt's partner, excelling in prospect generation and maturation. He has advanced geophysical and geological technologies, focusing on de-risking and ranking prospects, and played a key role in discovering the "Swan-E" well. Currently, as a Field Development Geophysicist, he leads initiatives to unlock new hydrocarbon plays in various geological settings. Ramy is pursuing a PhD in geophysics at Cairo University, applying machine learning to gas reservoirs. He holds a M.Sc. in geophysics from Cairo University and a B.Sc. from Ain Shams University.