I have a project for LSU to build a reduced size oil drilling rig for classroom use. Rig is made and has instrumentation to mimic the real thing. Next phase is to make cores for it to drill through, simulating different type and layers of formation. Been playing with parrifin and cement combination but am looking for other ideas, like maybe some epoxy/aggragate that will offer different drilling rates. Bit is a 1" masonry bit, turning at speeds below 150 RPM. Cores are made up in 3" PVC pipe with a 1/8 hole cast through the center to provide a flow path for water to carry cuttings from hole. Any ideas for core materials will be appreciated. Thus far I have used cement/sand with varying levels of cement, and wax with bentonnite or sand. Both work but I need more hardness to vary drilling rates
- posted
14 years ago