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1936-09-30 |
1939-03-28 |
Dow Chemical Co |
Method of removing metal obstructions from wells
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1939-07-15 |
1940-02-27 |
Lane Wells Co |
Bridging plug
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US2261292A
(en)
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1939-07-25 |
1941-11-04 |
Standard Oil Dev Co |
Method for completing oil wells
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1940-02-09 |
1941-04-15 |
Du Pont |
Method of treating wells
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(en)
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1944-09-14 |
1948-02-17 |
Loyd F Defenbaugh |
Means for severing well casings and the like in place in the well
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(en)
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1947-10-14 |
1951-10-16 |
Lewis H Watkins |
Removal of metallic obstructions in well borings by oxidation
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US2703316A
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*
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1951-06-05 |
1955-03-01 |
Du Pont |
Polymers of high melting lactide
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*
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1953-08-07 |
1960-05-03 |
Pan American Petroleum Corp |
Apparatus for cutting holes in well casing
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*
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1954-06-25 |
1959-01-06 |
Gulf Oil Corp |
Explosive device
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*
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1955-12-01 |
1959-08-11 |
Phillips Petroleum Co |
Disposable rubber products
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1958-09-02 |
1965-03-16 |
Gulf Research Development Co |
Fracturing process employing a heterogeneous propping agent
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1960-04-04 |
1962-09-11 |
Jet Res Ct Inc |
Apparatus for cutting sections from well casings
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1960-07-08 |
1963-04-30 |
Arthur F Brunton |
Formation testing device
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1961-01-23 |
1963-07-30 |
Montgomery K Miller |
Well screening device
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1961-03-31 |
1965-10-12 |
Otis Eng Co |
Pressure operated sleeve valve and operator
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1962-02-26 |
1965-09-14 |
Phillips Petroleum Co |
Device and process for igniting an oil stratum
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1963-05-23 |
1965-07-20 |
Pan American Petroleum Corp |
Spacers for fracture props
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1965-01-25 |
1967-02-07 |
Union Oil Co |
Method for treating subterranean formations
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1965-09-10 |
1968-01-30 |
Halliburton Co |
Method of fracturing and propping a subterranean formation
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1965-12-03 |
1969-07-15 |
Union Oil Co |
Low fluid loss well treating composition and method
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1966-02-14 |
1968-01-23 |
Dow Chemical Co |
Hydraulic fracturing fluid-bearing earth formations
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1966-02-23 |
1968-05-14 |
Texas Iron Works |
Liner hanger packer
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1966-10-24 |
1968-12-03 |
Mobil Oil Corp |
Formation consolidation using a combustible liner
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1971-10-21 |
1974-01-08 |
American Cyanamid Co |
Water-degradable resins containing recurring,contiguous,polymerized glycolide units and process for preparing same
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1972-03-03 |
1973-10-30 |
Mobil Oil Corp |
Well treating process using sacrificial plug
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1973-02-20 |
1976-05-04 |
United States Borax & Chemical Corporation |
5-Trifluoromethyl-7-aminobenzimidazoles herbicides
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1973-03-23 |
1976-05-04 |
United States Borax & Chemical Corporation |
5-Trifluoromethyl-7-nitrobenzimidazoles
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1973-04-16 |
1974-08-13 |
Shell Oil Co |
Dissolving siliceous materials with self-acidifying liquid
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1973-05-03 |
1975-10-14 |
American Cyanamid Co |
Process for polymerizing a substantially pure glycolide composition
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1973-05-25 |
1976-07-13 |
Texaco Inc. |
Controlled rate acidization process
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1974-05-15 |
1975-03-04 |
Shell Oil Co |
Self-acidifying treating fluid positioning process
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1974-06-03 |
1976-06-01 |
The Dow Chemical Company |
Self-breaking viscous aqueous solutions and the use thereof in fracturing subterranean formations
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1975-04-16 |
1976-12-21 |
Standard Oil Company |
Oil fracturing spacing agents
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1975-06-13 |
1976-12-14 |
Cmi Corporation |
Material transfer mechanism
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CA1045027A
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1975-09-26 |
1978-12-26 |
Walter A. Hedden |
Hydraulic fracturing method using sintered bauxite propping agent
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1975-11-03 |
1977-05-17 |
Tyler Holding Company |
Explosive container
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1976-02-04 |
1978-05-09 |
Tyler Holding Company |
Hand-held detonator
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1976-03-01 |
1978-08-09 |
Ici Ltd |
Shaped explosive charge casing
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1976-11-26 |
1979-10-02 |
Celanese Corporation |
Well-treating compositions
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1977-06-29 |
1980-01-22 |
Jet Research Center, Inc. |
Method and apparatus for severing tubing
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1977-08-29 |
1979-12-18 |
Atlas Powder Company |
Delay actuated explosive device
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1977-09-27 |
1980-01-22 |
Loffland Brothers Company |
Igniter for oil and/or gas well drilling operation
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1977-11-16 |
1980-02-12 |
Exxon Production Research Company |
Method and apparatus for placing buoyant ball sealers
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1978-04-24 |
1979-09-11 |
Atlas Powder Company |
Recovery of nitrated compounds using solvent extraction and distillation
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1978-11-13 |
1981-08-04 |
Wisconsin Alumni Research Foundation |
Amorphous metal structures and method
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1978-12-15 |
1981-06-30 |
Schlumberger Technology Corporation |
Apparatus for selectively coupling cables to well tools
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1979-01-15 |
1980-12-09 |
Schlumberger Technology Corp. |
Well bore apparatus adapted for being releasably coupled to suspension cables
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1979-04-24 |
1981-10-20 |
Atlas Powder Company |
Explosive container for cast primer
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1979-06-25 |
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Jet Research Center, Inc. |
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1979-06-29 |
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Explosive cutting system
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1980-02-21 |
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1979-12-07 |
1981-09-01 |
Halliburton Company |
Removable plug
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1979-12-20 |
1981-04-21 |
Halliburton Company |
Conductor pipe plug
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1980-04-21 |
1983-11-29 |
Texaco Development Corp. |
Propping agent for fracturing fluids
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1980-08-29 |
1982-06-15 |
The United States Of America As Represented By The United States Department Of Energy |
Method for gasification of deep, thin coal seams
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1980-10-06 |
1984-02-21 |
Halliburton Company |
Retrievable plug
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1981-02-23 |
1985-03-26 |
Wardlaw Iii Louis J |
Preheating insert for heavy wall pipe
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1981-04-09 |
1984-02-07 |
Sperry Corporation |
Superconductive tunnel junction integrated circuit
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1981-04-20 |
1982-09-28 |
The Babcock & Wilcox Company |
Oscillating soot blower mechanism
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1981-08-10 |
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Exxon Production Research Co. |
Method for reducing the permeability of subterranean formations
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1981-08-10 |
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Use of degradable ball sealers to seal casing perforations in well treatment fluid diversion
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Composition for reducing the permeability of subterranean formations
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1981-12-24 |
1984-01-03 |
General Motors Corporation |
Intercell flame arrestor for a battery venting and filling manifold
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1982-03-11 |
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Striping apparatus for marking surfaces
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1982-07-28 |
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Motorola, Inc. |
Method and apparatus for the measurement of the internal circumference of compliant rings
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1982-09-27 |
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Halliburton Company |
Method and compositions for fracturing subterranean formations
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1982-10-15 |
1988-05-17 |
The Babcock & Wilcox Company |
Panel indicator
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1982-12-13 |
1985-07-09 |
Newjig Limited |
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1983-01-17 |
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Sperry Corporation |
Superconductive tunnel junction device with enhanced characteristics and method of manufacture
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1983-03-21 |
1985-11-19 |
Sperry Corporation |
Superconductive integrated circuit incorporating a magnetically controlled interferometer
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1983-05-25 |
1986-06-03 |
Rca Corporation |
Distributed processor with periodic data transfer from each memory to like addresses of all other memories
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1983-05-31 |
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Remote control robot vehicle
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1983-07-25 |
1988-12-13 |
Dresser Industries, Inc. |
Method and apparatus for perforating subsurface earth formations
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1984-02-01 |
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Yeast and dough condition compositions
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1984-02-29 |
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Computer implemented go/no go gauging system
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1984-09-04 |
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The Babcock & Wilcox Company |
Local display technique for fiber optic illuminator/hood system
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1985-01-07 |
1986-07-08 |
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Pipe cutting apparatus
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Sjaelvarmerat absorberbart osteosyntesmedel.
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1985-06-19 |
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Britoil Plc |
Agitation/separation to dispersed gas flotation
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1985-12-06 |
1987-07-07 |
Amoco Corporation |
Method and apparatus for completing a plurality of zones in a wellbore
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1985-12-27 |
1987-12-29 |
E. I. Du Pont De Nemours And Company |
Composition and method for temporarily reducing permeability of subterranean formations
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1986-03-10 |
1987-04-07 |
Texas Metal Casting Co., Inc. |
Attachment apparatus for columnar member
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1986-07-24 |
1987-10-20 |
Halliburton Company |
Wet connector for use with drill pipe conveyed logging apparatus
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1986-07-25 |
1987-08-25 |
Camco, Incorporated |
Well packer with releasable head and method of releasing
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1986-09-05 |
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Portable cleaning container
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Procedimiento para la preparacion de un homopolimero de vinilamina de alto peso molecular
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1987-09-01 |
1989-03-28 |
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Apparatus for slant punching a plurality of elongate holes in a penetrable blank of material
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1987-11-03 |
1990-03-20 |
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Portable cleaning container
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Portable cleaning container
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Halliburton Services |
Method of dissolving organic filter cake
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1988-02-16 |
1989-07-18 |
Conoco Inc. |
Formation fracturing process
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1990-09-18 |
Conoco Inc. |
Well treatment process
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Indexing sootblower
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System for testing internal nodes
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Placement process for oil field chemicals
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Composition and placement process for oil field chemicals
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Halliburton Company |
Drillable, testing, treat, squeeze packer
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Halliburton Company |
Method for effecting controlled break in polysaccharide gels
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Center bar inserter
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Downhole tool apparatus with non-metallic components and methods of drilling thereof
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Downhole tool apparatus with non-metallic components and methods of drilling thereof
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