pumping equipment which is provided at the well site and may be mounted on a vehicle e g mounted in equipment area 50 of support vehicle 32 cement bulk module 34 comprises a bulk material holding tank 60 mounted on a support framework 62 that may be readily connected and disconnected from docking unit 58 instead of supplying bulk material via a separate truck module 34 is simply lifted from vehicle 30 by crane 40 and moved to a desired position at well site 20 for carrying out the cementing procedure for example the cement bulk module 34 can be mounted on support vehicle 32 via mounting mechanism 46 upon completion of the cementing process module 34 may be disconnected and removed from mounting mechanism 46 to enable the interchanging of module 34 with another module wireline module 36 comprises for example a wireline 64 and a wireline winch 66 for moving wireline 64 into wellbore 24 wireline module 36 can be used for a variety of well construction related procedures including the logging of data from within the well accordingly wireline module 36 can be released from its docking unit 58 and lifted from vehicle 30 via crane 40 for movement to a desired position of operation e g mounting mechanism 46 on support vehicle 32 upon completion of this phase of well construction module 36 is moved back to one of the docking units 58 on crane truck 30 or to another storage location referring generally to fig3 another configuration of crane truck 30 is illustrated in this embodiment modules 34 and 38 are mounted to two docking units 58 as discussed above module 34 may comprise a.