Quantitative Interpretation of Well Logging and Seismic Data for Reservoir Characterization, Ha'py Field, Ras El Bar Concession, Nile Delta, Egypt.

Abstract

The Nile Delta basin is the most prolific, prospective gas and condensate province in Egypt. Nile Delta is the main gas producing province in the northern part of Egypt with approximately 62 TCF proven reserves. The study area is Hapy Field which lies in Ras El Barr concession, in the eastern part of the offshore Nile Delta, about 40 km away from shoreland, in 80 m of water. The integration analysis between petrophysical evaluation of well logs for Kafr El-Sheikh reservoir units and different seismic interpretation techniques in Hapy Field prove to be useful for accurate delineating the lateral and vertical extension of the sand reservoir units (A22, A24, A30 and the main sand unit of A20). Also, it is evidence for discriminating between the gas-bearing sand, brine sand and shale since the Base Gas and Base of the main sand unit of A20 are clearly overlapped in several seismic sections. Finally, the gas reserve of the A20 reservoir is estimated based on geobody extraction technique to show the efficient profits of the reservoir. The available data for this study consists of well and seismic data. The well data includes a complete set of well logs for six wells, composite logs and deviation surveys for the wells, MDT data for two wells, core reports for two wells and check-shot data for two wells. The seismic data is a 3D poststack seismic cube (MAZ volume). Techlog (2015.3), Petrel (2017.4), OpendTect (6.6) and Humpson-Russel (HRS 10.1) softwares have been used in this study. Well logging analysis of the Kafr El-Sheikh reservoir units for the available six wells in the study area resulted in the following conclusions: 1. The main pay zone in Hapy Field is A20 sand which exists in all the available wells with a large thickness and optimum effective porosity