Geological Modeling and Reservoir Characterization of the Upper Pliocene Sediments, Offshore East Nile Delta, Egypt: Ha’Py Field After 6 Years of Production

Essam Sharaf¹, Mohamed Reda², Pablo Bartlome², and Noha Soliman^2
1Geology Department, Mansoura University, Mansoura, Egypt
²BP Egypt, Cairo, Egypt

Plio-Pleistocene sediments at the offshore, Nile Delta constitute a major gas province. High resolution 3D seismic data and recent exploration activities proved several plays with complex depositional settings. Ha’py field is a gas reservoir located at the eastern side offshore Nile Delta. Subsurface study utilizing geologic and petrophysical data obtained from three exploration and appraisal wells was used earlier to construct the simulation model of the field and calculate gas in place prior to production. During Hapy and the neighboring Akhen field’s development, 8 additional wells were drilled. All the new data collected during development work has been used to perform a new reservoir characterization study, resulting in better understanding of the geologic setting, and a more accurate simulation model. The new characterisation effort included, reviewing seismic data and time to depth conversion, review of petrophysical data with new SCAL results, and a stochastic object based geological model. The geological model was upscaled and used as a base for simulation studies performed in VIP using BP proprietary TDRM(©) technology to assist history matching. Results from the new study have been compared with material balance models giving a good match but crucially the new approach has provided a range of possible scenarios, which have been used to create a new depletion plan with distinct opportunities characterised.

AAPG Search and Discovery Article #90078©2008 AAPG Annual Convention, San Antonio, Texas