TY  - SER
AU  - Mason,Richard J.
TI  - Rising demand for drilling services means tight land rig market: Oil is bringing in more money than gas, but as shale plays proliferate, high-spec. high-horsepower rigs might reach 100% utilization before newbuilds can help
PY  - 2008///
CY  - 
PB  - 
ER  -