Simple Processing Sequence to VSP-Seismic data matching in Sindbad oil field, south of Iraq

Ali M. Al-Rahim; Osama S. Doohee; Abdul Zahra Iskandar

Simple Processing Sequence to VSP-Seismic data matching in Sindbad oil field, south of Iraq

( Vol-4,Issue-10,October 2017 ) OPEN ACCESS

Author(s):

Ali M. Al-Rahim, Osama S. Doohee, Abdul Zahra Iskandar

Keywords:

Vertical Seismic Profile, Zero-offset VSP survey, Processing of ZVSP, VSP to Seismic matching, Lower Cretaceous age- Sindbad oil field.

Abstract:

The purpose of this research is to get the batter matching between VSP and seismic data after preforming a simple processing sequence on Zero-offset VSP survey. Sindbad oil field is chosen to study goals and it's containing only one well with VSP survey (Snd2) that covering depth from Zubair to Sulaiy Formations and 2D seismic lines of Basrah Survey (2Br & 5Br). In order to get the mentioned information from VSP the main steps of processing sequence (Velocity calculation, Amplitude recovery, wave separation, deconvolution and stacking) has been used to measure (RMS and AVG) velocity and make the corridor stack image of VSP p-waves in Promax landmark software. The principle of VSP and seismic data matching is depended on phase and time shift. The matching filter in Omega software depends on frequency content, phase, locations of the two data and amplitude difference which gives us batter correlation for matching. The final test of these filters shows good matching between Snd-2 VSP and 2Br2 Seismic line.