Elnusa's commitment to this service is realized through superior data quality to the best OHS (Occupational Health and Safety) in the Transition Zones survey in Indonesia. The Company comes with seismic data collection service in shallow water and also 2D, 3D and 4D transition zones to answer the needs of oil and gas industry players. Combined with geological data, seismic data will give a picture of the structure, thickness, sedimentation below ground level. The scope of the service includes providing 4C system components namely P, X, Y and Z component acquisition. Through shear wave, XYZ processing, complex geological structures such as the presence of micro fractures or gas density contrasts can be handled well. The 4C solution is the answer for the industry players that handle reservoir with high difficulty level while standard and 4C have currently become a global trend.