Proppants coated by piezoelectric or magnetostrictive...

Proppants containing dispersed piezoelectric or...

Proppants with carbide and/or nitride phases

Proppants with soluble composite coatings

Propped fracture with high effective surface area

Propped fracture with high effective surface area

Propped fracture with high effective surface area

Propping agent and method of propping open fractures in the wall

Propping agent based on zirconia and silica for deep geological

Propping material for hydraulic fracturing

Propping subterranean formation fractures

Propulsion apparatus for positioning selected tools in tubular m

Protection against loss of downhole tools

Protection of downwell pumps from sand entrained in pumped...

Protection of gravel pack well completions during steam injectio

Protection scheme and method for deployment of artificial...

Protection scheme and method for deployment of artificial...

Protective arrangements for downhole tools

Protective cover assembly for a well casing and a method of prot

Protective device for threaded portion of tubular member