Bill Calobreves

Experience

• 

  Cass Oil Company Inc

  Jan 1976 - Jan 1986

  Operations Manager

  Managed all drilling, completion & production activities. Responsible for all Sprayberry Trend operations

• 

  PetroSantander Colombia Inc.

  Jan 1999 - Jan 2010

  Drilling, Completion, Work over, Well Plans, AFE’s, and Well site Supervision•Drilled over 300 vertical wells…Depths f/ 4900-6350’ w/ air/mist systems•Drilled depth to 12,350’ w/ air/mist systems…switching to brine or mud system when hole conditions dictated…deviation to 30 Degrees•Drilled approximately 15 directional w/ air & mud w/ motors, MWD & steering tools…8 to 15 degree kicks•High pressure underbalanced drilling w/ air •Overbalanced drilling after switching to brine mud…Strawn & Ellenberger•Managed all vendors & well site activity•Coordinated all activity between drilling contractor & 3rd party vendors•Cored wells using both conventional barrel core tools & wire line side wall coring tools•Experienced in various bottom hole assembly to control down hole conditions…deviation, ledging•Experienced in running hammer bits Show less

  • Drilling, completion supervisor

    Jan 2009 - Jan 2010

  • Drilling Consultant

    Jan 2004 - Jan 2009

  • General Partner & Operator

    Jan 1999 - Jan 2004
• 

  Lewco & Associates

  Jan 2010 - now

  Drilling Consultant

  Wasatch Basin), Marcellus & Utica shale basins in West Virginia, Pennsylvania & Ohio, & Colombia, SA•Hess Corporation, Chesapeake Energy, Harvest Natural Resources, PetroSantander, FIML Natural Resources, EOG, Texaco, Enron, Sonat, & Cass Oil Company; Horizontal drilling & completion in Utica Shale in SE Ohio, plug & perforate Completions w/ composite plugs, drlg out w/ coiled tubing, snubbing unit operations Drilling in Marcellus field in West Virginia & SW Pennsylvania Drilling in Wasatch Basin in Utah Directional drilling to control deviation Show less