Permian basin drilling rig count

Permian Region Rig Count is at a current level of 317, up from 315 last month and down from 356 one year ago. This is a change of 0.63% from last month and -10.96% from one year ago. View monthly updates and historical trends for Permian Region Rig Count (DISCONTINUED). [pdf]

Development of twin-screw air compressors in Argentina

Due to the growing need for the compressed air of higher quality, the water-lubricated twin-screw compressor with water as the only liquid in the compressor has drawn much attention to produce clean air a. [pdf]