JELFLAKE
Filed: August 19, 1940
Lamellar Material to Be Added to Fluid Agents Employed in Treating Well Bores, which Acts as a Seal to Prevent Loss of the…
Owned by: Dowell Incorporated
Serial Number: 71435123
DOWELL
Filed: February 9, 1948
CHEMICALS USED IN THE TREATMENT OF WELLS, SUCH AS OIL, GAS, BRINE, AND WATER WELLS-NAMELY, ACIDS, ACID INHIBITORS, ALKALIES…
Owned by: Dowell Incorporated
Serial Number: 71549136
DOWELL
Filed: February 9, 1948
CHEMICAL AND ENGINEERING SERVICES RENDERED IN CONNECTION WITH THE TREATMENT OF WELLS-NAMELY, ACIDIZING, CEMENTING, PLASTIC…
Owned by: Dowell Incorporated
Serial Number: 71549137
CORBAN
Filed: April 26, 1952
ORGANIC CHEMICAL PREPARATION FOR INHIBITING CORROSION OF METALS
Owned by: Dowell Incorporated
Serial Number: 71628743
SANDFRAC
Filed: November 26, 1952
WELL TREATING SERVICES-NAMELY, HYDRAULIC FRACTURING OF UNDERGROUND EARTH FORMATIONS AND PROPPING OPEN THE RESULTING FRACTURES…
Owned by: Dowell Incorporated
Serial Number: 71638639
FIXAFRAC
Filed: March 16, 1953
WELL TREATING SERVICES-NAMELY, COMBINED PLUGGING AND FRACTURING OF EARTH FORMATIONS
Owned by: Dowell Incorporated
Serial Number: 71643665
SANDTROL
Filed: June 10, 1953
WELL TREATING SERVICE-NAMELY, INJECTION OF A SAND SUSPENSION INTO THE WELL AT A PREDETERMINED POINT TO PACK THE FORMATION…
Owned by: Dowell Incorporated
Serial Number: 71648538
PETROFRAC
Filed: July 21, 1953
WELL TREATING SERVICE-NAMELY, INJECTING MIXTURES OF OIL AND SAND TO PRODUCE FRACTURING OF SELECTED FORMATIONS
Owned by: Dowell Incorporated
Serial Number: 71650583
PROTECTOJEL
Filed: February 18, 1954
WELL TREATING SERVICE-NAMELY, PLACING A LOW PENETRATING FLUID OPPOSITE A ZONE IN A WELL TO BE PERFORATED TO PREVENT UNDESIRABLE…
Owned by: Dowell Incorporated
Serial Number: 71661268
SOS
Filed: September 30, 1954
WELL TREATING SERVICE-NAMELY, INJECTING NON-AQUEOUS LIQUID CEMENT COMPOSITION INTO SUB-SURFACE STRATA TO CONTROL UNDESIRED…
Owned by: Dowell Incorporated
Serial Number: 71674056
