Annular Injection & Slurry Injection ServicesAnother valuable and cost effective option that Newpark Mats & Integrated Services offers to aid in minimizing oilfield waste is the capability of annular injection.  Annular injection introduces the waste slurry through the space between two casing strings (known as the annulus).  Newpark can provide all necessary personnel and equipment to perform annular injection services.  This includes all injection pump services and highly skilled personnel to monitor back side pressures at all times during the injection process.