Inventor
Donald L. Whitfill
Inventor
Kingwood, TX, US
Overview
Patents· 41 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C09Kprimary
C09KMaterials for miscellaneous applications, not provided for elsewhere49%
E21BEarth or rock drilling23%
C04BLime, magnesia9%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests8%
Y02WClimate change mitigation technologies related to wastewater treatment or waste management5%
B29CShaping or joining of plastics1%
F04FPumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped1%
G01NInvestigating or analysing materials by determining their chemical or physical properties1%
Y10TTechnical subjects covered by former us classification1%
PatentTitleYear
11,091,964Method to manage tandem single string reactive LCM pill applications202110,982,125Application of metal oxide-based cements in wellbores202110,442,974Methods of enhancing fluid loss control using additives201910,066,143Resilient carbon-based materials as lost circulation materials and related methods201810,035,941Multi-modal particle size distribution lost circulation material20189,932,510Lost-circulation materials of two different types of fibers20189,725,975'Engineered methods and materials for wellbore strengthening in subterranean operations'20179,022,147'Drilling fluid that when mixed with a cement composition enhances physical properties of the cement composition'20158,969,264'Oil or gas treatment fluid containing a chelate or coordination complex that sets'20158,887,808'Engineered methods and materials for wellbore strengthening in subterranean operations'20148,739,872'Lost circulation composition for fracture sealing'20148,517,103'Oil or gas treatment fluid containing a chelate or coordination complex that sets'20138,418,763'Self-degrading cement compositions and associated fluid loss applications'20138,383,558'Oilwell sealant compositions comprising alkali swellable latex'20138,202,824'Variable density treatment fluids'20128,132,623'Methods of using lost circulation compositions'20128,043,997'Lost circulation material formulation and method of use'20117,776,797'Lost circulation compositions'20107,749,942'Variable density fluids and methods of use in subterranean formations'20107,488,705'Oilwell sealant compositions comprising alkali swellable latex'20097,482,309'Methods of drilling wellbores using variable density fluids comprising coated elastic particles'20097,284,611'Methods and compositions for controlling lost circulation in subterranean operations'20077,281,583'Self-dissolving lost circulation treatment for producing formations'20076,968,898'System and method for removing particles from a well bore penetrating a possible producing formation'20056,932,169'System and method for developing and recycling drilling fluids'20056,889,780'Method for drilling depleted sands with minimal drilling fluid loss'20056,848,519'Methods of forming a chemical casing'20056,837,316'Methods of consolidating formations'20056,823,940'Methods of consolidating formations and forming a chemical casing'20046,702,044'Methods of consolidating formations or forming chemical casing or both while drilling'20046,152,227'Drilling and cementing through shallow waterflows'20005,207,282'Method for inhibiting the initiation and propagation of formation fractures while drilling and casing a well'19935,180,020'Method for inhibiting the initiation and propagation of formation fractures while drilling'19935,012,869'Method for restricting gas influx during well cementing'19914,986,353'Placement process for oil field chemicals'19914,957,174'Method of controlling lost circulation in well drilling'19904,819,723'Reducing the permeability of a rock formation'19894,605,069'Method for producing heavy, viscous crude oil'19864,213,762'Determination of chromate ion in drilling mud filtrates'19804,062,405'Method of treating oil-bearing formations using molten sulfur insulating packer fluid'19773,962,099'Water base drilling mud composition'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1977Patents assigned to CONTINENTAL OIL CO (2)· patent assignee history
1976–2021Based in Ponca City, OK, US· patent location history
1980–1993Patents assigned to CONOCO INC (8)· patent assignee history
2000–2021Based in Kingwood, TX, US· patent location history
2004–2015Patents assigned to HALLIBURTON ENERGY SERV INC (21)· patent assignee history
2012–2015Patents assigned to WHITFILL DONALD L (5)· patent assignee history
2013–2015Based in Houston, TX, US· patent location history
2015–2021Patents assigned to HALLIBURTON ENERGY SERVICES INC (8)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HALLIBURTON ENERGY SERV INC | 21 | 2004–2015 |
| CONOCO INC | 8 | 1980–1993 |
| HALLIBURTON ENERGY SERVICES INC | 8 | 2015–2021 |
| WHITFILL DONALD Lself | 5 | 2012–2015 |
| CONTINENTAL OIL CO | 2 | 1976–1977 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kingwood, Texas, US | 27 | 2000–2021 |
| Ponca City, OK, US | 12 | 1976–2021 |
| Houston, Texas, US | 2 | 2013–2015 |