Application of Seismic Attributes for Pliocene Turbiditic Channel Reservoirs Delineation, Denise Field, Offshore Eastern Mediterranean, Egypt. | ||
| Egyptian Journal of Geology | ||
| Volume 66, Issue 1, 2022, Pages 97-112 PDF (12.47 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/egjg.2022.167557.1024 | ||
| Authors | ||
| Ahmed Khairy Gadelkarim* 1; Abd El-Nasser Helal2; Azza El Rawy2 | ||
| 1Belayim Petroleum Company (PETROBEL), Cairo, Egypt. | ||
| 2Geophysics, Science, Ain Shams, Cairo, Egypt | ||
| Abstract | ||
| Denise Field is located in Temsah concession, at the eastern part of the offshore Nile delta with the extension of the field area is about 160 sq. km., about 60 km. off the coast line, North East of Damietta and North West of Port Said. The main reservoirs of Denise Field are Pliocene Denise sands which are divided into three different reservoirs: upper Denise sand, middle Denise sand, and lower Denise sand. The two main reservoirs in terms of areal extension and production are the upper and lower Denise sands. These reservoirs are mainly composed of sandstone of turbiditic origin, which are expressed as bright spot seismic amplitude anomalies as one of the most common Direct Hydrocarbon Indicators (DHI), with a clear flat spot seismic feature representing the gas water contact in the proven area. While faraway about this area it is problematic to delineate the reservoirs, due to the low reflectivity that produced by the huge thickness of Pliocene shales. Similarly, the low resolution of shallow interval with missing data due to the existence of the drilling platform in time of acquiring the seismic data. The purpose of this paper is to delineate the two main reservoir levels; upper Denise sand and lower Denise sand through regional structure and stratigraphy seismic interpretation using the power of seismic attributes. The seismic interpretation workflow was an integrating process between conventional seismic interpretation and seismic attributes extraction and interpretation, where the interpretation was refined continuously based on the seismic attributes results. With the aid of related seismic attributes, seismic interpretation has been done and refined for the top upper Pliocene surface as well as the two reservoirs of interest. Amplitude maps along the reservoir surfaces and multiple seismic attributes have been extracted resulting in a good delineation and linking of the reservoirs and their equivalent prospect areas in the field. Finally, the integration of these tools confirmed the areal extension and distribution of these reservoirs and the existence of three new prospect locations in the field to be proposed for drilling. | ||
| Keywords | ||
| Denise Field; Seismic Attributes; Seismic Amplitude Interpretation; Pliocene Reservoir | ||
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