Inventor

SPARLIN DERRY D

22 patents

⚠️ This page may combine multiple inventors who share the name “SPARLIN DERRY D”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SPARLIN DERRY D

CONTINENTAL OIL CO

Control of incompetent formations with thickened acid-settable resin compositions

Use of thickened oil for sand control processes

Control of incompetent formations with thickened compositions containing base-settable resin

Method for sealing a permeable subterranean formation

Water control with polymers

Pump-down sand washing tool

High strength silicate form and method for producing same

Method for detecting and locating sand producing zones in friable, unconsolidated sandstone formations of subterranean formations

Seal assembly for fluid injection pump-down tools

Method for detecting and locating water-producing zones and/or water thief zones in subterranean formations

Control of incompetent formations with thickened acid-settable resin compositions

Method for reducing the production of water from oil wells

NAGAOKA KK

Well screen having a uniform outer diameter

Well screen having slurry flow paths

Method of manufacturing a selective isolation screen

Method of manufacturing a selective isolation screen

SPARLIN DERRY D

Well liner with dual concentric half screens

Well liner with selective isolation screen

Permeable isolation sectioned screen

BAKER INT CORP

Acid soluble coating for well screens

Acid soluble coating for well screens

(unassigned)

Gravity enhanced maintenance screen