Modular Wellsite Package (MWP) is an integrated skid-based unit containing all wellsite equipment and components required between the X-mas tree and the main flow line leading to the gathering station. It includes HIPS, CIS skids, Wellhead Shutdown Panels, Sampling Units, Cellar ventilation arrangement, Fire & Gas Control System, PLC Systems ,Communication Systems etc. All these equipment which comes in between X-mas tree and header line are neatly arranged within the modular package making it a compact design which can be mounted on pre-designed foundation. The complete package can be fully integrated and tested as one unit. MWP units can be built for gas, oil and as well as injection wells.