Secondary Formation Exposure by Drilling Perforation


Drilling perforation is another method of a secondary exposure of oil and gas wells which is based on drilling a hole in a casing string, cement and rock.

The equipment consists of a well device and surface control blocks, placed in a log survey station or on a lift.

Major advantages of drilling perforators are their ability in creation of perforated channels at the soft, sparing mode of operation without impact influence, eliminating deformation and damages of casing strings, creation of cracks in a cement ring and worsening of filtration rock characteristics in a formation of a well critical area.