any of the pumps identified or described herein may by used in this aspect of the invention in some embodiments of the invention the vacuum pump is a pump on a vacuum truck for example vacuum trucks suitable for use with the invention include gapvax u00ae hydro excavator trucks having container capacities as high as 1 600 gallons and pumps that produce vacuum as great as 28 u2033 hg pipe or flexible hose such as hose made of a rubber and metal composite may be used to connect the vacuum pump 51 to the well head 2 flow meters and densitometers may also be used to monitor flow rates and the density of the cement composition flowing into the annulus or the circulation fluid flowing out of the id of the casing 3 valves may also be included in the system to stop or restrict cement composition and or circulation fluid flow also a tail pipe or macaroni string coiled tubing may be inserted down the id of the casing 3 and attached to the vacuum pump 51 submersible pumps may also be inserted into the inner diameter of the casing to a certain depth below the surface to pump the circulation fluid out of the inner diameter of the casing suitable submersible pumps include those manufactured by mono pump and flight itt a vacuum pump may also be used to initiate circulation in the conventional direction and to deposit a cement composition in the casing id for later high pressure pumping into the annulus the vacuum pump is simply connected to the annulus and.