A method for operation to excavate underdrain in the field...

A method for performing oilfield production operations

A method for performing oilfield production operations

A method for plowing snow and a snow plow

A method for predicting the directional tendency of a...

A method for pressure- and flow-preventive fixing of pipes...

A method for preventing and discharging flood

A method for providing a preferential specific injection...

A method for real time process control of well stimulation

A method for reaming in the construction of a well

A method for recovering fluid from an underwater apparatus...

A method for reducing roof membrane damage from...

A method for reducing thermal loss in a formation

A method for reinforcing rock with a tendon

A method for sealing off grounds sites

A method for sequestering a fluid within a hydrocarbon...

A method for setting down a bit in the construction of a well

A method for stratified construction and heating a grass...

A method for the formation of a plug in a petroleum well

A method for the fracture stimulation of a subterranean...