Learn more

DOWELL SCHLUMBERGER CANADA

Overview
  • Total Patents
    53
About

DOWELL SCHLUMBERGER CANADA has a total of 53 patent applications. Its first patent ever was published in 1982. It filed its patents most often in Canada. Its main competitors in its focus markets basic materials chemistry, civil engineering and machines are PUMPTECH NV, BJ SERVICES CO and DOWELL A DIVISION OF SCHLUMBER.

Patent filings in countries

World map showing DOWELL SCHLUMBERGER CANADAs patent filings in countries
# Country Total Patents
#1 Canada 53

Patent filings per year

Chart showing DOWELL SCHLUMBERGER CANADAs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Buisine Paul 5
#2 Chan Keng S 3
#3 Lavaure Gilbert 3
#4 Frenier Wayne W 2
#5 Campman Keith S 2
#6 Sorem Robert M 2
#7 Perthuis Herve 2
#8 Piot Bernard 2
#9 Dejeux Philippe 2
#10 King Milton T 2

Latest patents

Publication Filing date Title
CA2268597A1 Process for hydraulically fracturing oil and gas wells utilizing coiled tubing
CA2073806A1 Delayed borate crosslinking fracturing fluid
CA2038303A1 Lightweight cement for high pressure applications
CA2004393A1 Method of cementing well casing to avoid gas channelling from shallow gas-bearing formations
CA1291263C Modified ring test
CA1336039C High temperature corrosion inhibitor
CA1233408A Process for plugging a subterranean formation
CA1253679A Hydraulic fracturing process and compositions
CA1210231A Method of acidizing wells using gelled acids
CA1211622A Gelled acid compositions and methods for acidizing subterranean formations
CA1211638A Flow meter and densitometer apparatus and method of operation
CA1210413A Lightweight cement slurry and method of use