Sequentially flooding an oil-bearing formation with a surfactant
Settable compositions comprising a natural pozzolan and...
Shifting apparatus and method for use in tubular strings for...
Shut-in tools and method
Signal transmission through deflected well tubing
Signalling method and apparatus
Signalling systems and methods for communicating with a...
Simultaneous hydraulic fracturing
Single well surfactant test to evaluate surfactant floods using
Single well test for evaluating CO.sub.2 injection
Single well tracer method to evaluate enhanced recovery
Slick line casing and tubing joint locator apparatus and associa
Slick line casing and tubing joint locator apparatus and associa
Slickline fluid indentification tool and method of use
Slug design in micellar-polymer flooding
Small diameter dual pump pollutant recovery system
Small hole retrievable perforating system for use during extreme
Smart cementing systems
Sonde
Sonic fluid level control apparatus