Harold J. Hill

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Houston, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Process for stimulating a well with a saline surfactant sulfate, al...
- Patent number 4,279,305
- Issue date Jul 21, 1981
- Shell Oil Company
- Randolph H. Knapp
- E21 - EARTH DRILLING MINING
Information Patent Grant
Steam-channel-expanding steam foam drive
- Patent number 4,086,964
- Issue date May 2, 1978
- Shell Oil Company
- Richard E. Dilgren
- E21 - EARTH DRILLING MINING
Information Patent Grant
Ion exchange controlled chemically aided waterflood process
- Patent number 4,074,755
- Issue date Feb 21, 1978
- Shell Oil Company
- Harold J. Hill
- E21 - EARTH DRILLING MINING
Information Patent Grant
Aqueous anionic surfactant systems containing aromatic ether polysu...
- Patent number 4,013,569
- Issue date Mar 22, 1977
- Shell Oil Company
- Ying C. Chiu
- E21 - EARTH DRILLING MINING
Information Patent Grant
Process for displacing oil using aqueous anionic surfactant systems...
- Patent number 3,945,437
- Issue date Mar 23, 1976
- Shell Oil Company
- Ying-Chech Chiu
- E21 - EARTH DRILLING MINING