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The PC2000 seismic survey data library

The Persian Gulf is located in the region with the largest petroleum potential in the world.  The PC-2000 (Persian Carpet) is one of the largest Multi Client 2D surveys ever undertaken.  PC 2000 covers the entire offshore Iran in the Persian Gulf and the Oman Sea.  The PC 2000 has been collected in exclusive partnership with the National Iranian Oil Company (NIOC), and the data has so far been licensed to 18 oil and gas companies.

The PC 2000 seismic database covers the entire Iranian offshore with a 2x2 km seismic grid.  These data will serve as the main tool in all future exploration offshore Iran.  The library consists of a total of 90,700 line kilometers of standard offshore library, 11,700 Lkm of shallow water as well as 3,600 Lkm of Transition Zone.  In addition the library consists of 3,250 sq.km of 3D (Pseudo 3D) data. The Pseudo-3D projects was completed over structures with a very high potential i.e. the F and G structures located less than 100 km to the Northwest of South Pars, -the world’s largest gas/condensate field.

GGS has collected gravity data which covers substantial parts of the PC 2000 grid.  The coverage is especially good for the Oman Sea, the strait of Hormuz, the Lavan Area, and in the shallow water parts of the Northwestern Gulf.

All gravity data has been collected using a-state-of-the-art “Chekan-am” gravity-meter.  In addition to raw datasets, the following maps are supplied:  bathymetry, Bouguer anomaly, high pass Bouguer anomaly with 100 km & 50 km cut off, and also free air anomaly.

Many of the wells in the Persian Gulf are located in areas with steeply dipping strata.  Additional seismic lines become especially important in tying such wells to the PC 2000 grid.  GGS has collected 10 km well ties over most wells in the Persian Gulf.

GGS offers high quality interpretation of all PC 2000 data at low cost.  Most of the data has been interpreted by senior staff at Robertson Research , with long experience in the Middle-East.  The interpretation is supplied in digital format, easily imported into any interpretation software as well as maps at a 1:250.000 scale.

GGS has used considerable resources in pointing out different play types in the PC 2000 area.  The Atlas is considered a valuable, supplementary tool in offshore exploration.  The atlas is presented on an area by area basis.

As a service to its clients GGS has compiled general well data into 6 separate databases.  Key information includes: main tops in depth (time) + some logs when available.

In co-operation with Enres International, GGS has done high resolution, high quality well correlation of wells offshore Iran using state-of-the-art digital techniques, analyzing and recognizing astronomically driven cyclicity.

In co-operation with Exploration Geosciences (UK), GGS has prepared a geological study of the Oman Sea based on the first 1900 km collected in the Oman Sea.  As well as addressing the hydrocarbon potential of the Oman Sea, this study places the region in a global geological framework.

Examples include “Stratigraphic Columns around the Gulf of Oman Area”, “Hydrocarbon Maturity windows”, “Gas Hydrates and DHI’s and Accretionary Margins (Analogues or One-offs)” and“Seismic Examples Montage”.

Together with  Nigel Press Associates (UK) GGS has developed a satellite-based study of the surface of the Oman Sea, revealing hydrocarbon seeps not related to ship spill.  Such seeps can contribute in identifying hydrocarbon generating strata on a regular basis and are valuable indicators that new or underexplored parts of offshore basins contain a mature source and hence help risk reduction at an early stage.

Numerous undrilled structures and stratigraphic prospects have been found from preliminary interpretation of the PC 2000 seismic data.