US3706344A - Tubing conveyed permanent completion method and device - Google Patents
Tubing conveyed permanent completion method and device Download PDFInfo
- Publication number
- US3706344A US3706344A US80991A US3706344DA US3706344A US 3706344 A US3706344 A US 3706344A US 80991 A US80991 A US 80991A US 3706344D A US3706344D A US 3706344DA US 3706344 A US3706344 A US 3706344A
- Authority
- US
- United States
- Prior art keywords
- borehole
- packer
- zone
- tubing string
- perforator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims abstract 25
- 238000004519 manufacturing process Methods 0.000 claims abstract 16
- 238000010304 firing Methods 0.000 claims abstract 13
- 239000004215 Carbon black (E152) Substances 0.000 claims 36
- 229930195733 hydrocarbon Natural products 0.000 claims 36
- 150000002430 hydrocarbons Chemical class 0.000 claims 32
- 230000015572 biosynthetic process Effects 0.000 claims 31
- 239000012530 fluid Substances 0.000 claims 11
- 210000002445 nipple Anatomy 0.000 claims 9
- 230000005251 gamma ray Effects 0.000 claims 6
- 239000002360 explosive Substances 0.000 claims 5
- 125000001183 hydrocarbyl group Chemical group 0.000 claims 4
- 230000002706 hydrostatic effect Effects 0.000 claims 3
- 238000011109 contamination Methods 0.000 claims 2
- 239000007788 liquid Substances 0.000 claims 2
- 239000003129 oil well Substances 0.000 claims 2
- 230000000149 penetrating effect Effects 0.000 claims 2
- 230000035515 penetration Effects 0.000 claims 2
- 230000009977 dual effect Effects 0.000 abstract 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/11—Perforators; Permeators
- E21B43/116—Gun or shaped-charge perforators
- E21B43/1185—Ignition systems
- E21B43/11855—Ignition systems mechanically actuated, e.g. by movement of a wireline or a drop-bar
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/11—Perforators; Permeators
- E21B43/116—Gun or shaped-charge perforators
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/14—Obtaining from a multiple-zone well
Abstract
Claims (58)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US8099170A | 1970-10-15 | 1970-10-15 |
Publications (2)
Publication Number | Publication Date |
---|---|
US3706344A true US3706344A (en) | 1972-12-19 |
US3706344B1 US3706344B1 (en) | 1985-07-09 |
Family
ID=22160972
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US80991A Expired - Lifetime US3706344A (en) | 1970-10-15 | 1970-10-15 | Tubing conveyed permanent completion method and device |
Country Status (1)
Country | Link |
---|---|
US (1) | US3706344A (en) |
Cited By (43)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3912013A (en) * | 1974-11-11 | 1975-10-14 | Vann Roy Randell | High temperature perforating method |
US3957115A (en) * | 1974-04-15 | 1976-05-18 | Otis Engineering Corporation | Method and apparatus for treating wells |
US3990507A (en) * | 1974-11-11 | 1976-11-09 | Vann Roy Randell | High temperature perforating apparatus |
US4009757A (en) * | 1975-02-03 | 1977-03-01 | Vann Roy Randell | Sand consolidation method |
US4078611A (en) * | 1975-10-14 | 1978-03-14 | Vann Roy Randell | High temperature perforating method |
US4105073A (en) * | 1977-09-26 | 1978-08-08 | Brieger Emmet F | Tubing conveyed sand consolidating method |
US4299287A (en) * | 1980-05-19 | 1981-11-10 | Geo Vann, Inc. | Bar actuated vent assembly and perforating gun |
US4330039A (en) * | 1980-07-07 | 1982-05-18 | Geo Vann, Inc. | Pressure actuated vent assembly for slanted wellbores |
US4372384A (en) * | 1980-09-19 | 1983-02-08 | Geo Vann, Inc. | Well completion method and apparatus |
US4375834A (en) * | 1979-05-16 | 1983-03-08 | D & D Company Ltd. | Casing perforation method and apparatus |
FR2542804A1 (en) * | 1983-03-17 | 1984-09-21 | Flopetrol | Perforators for wells of the oil type |
US4480690A (en) * | 1981-02-17 | 1984-11-06 | Geo Vann, Inc. | Accelerated downhole pressure testing |
EP0132330A2 (en) * | 1983-07-21 | 1985-01-30 | Halliburton Company | Tubing conveyed well perforating system |
US4526233A (en) * | 1984-01-20 | 1985-07-02 | Baker Oil Tools, Inc. | Releasable coupling for tubing conveyed subterranean well perforating gun |
US4544034A (en) * | 1983-03-31 | 1985-10-01 | Geo Vann, Inc. | Actuation of a gun firing head |
US4554981A (en) * | 1983-08-01 | 1985-11-26 | Hughes Tool Company | Tubing pressurized firing apparatus for a tubing conveyed perforating gun |
US4566544A (en) * | 1984-10-29 | 1986-01-28 | Schlumberger Technology Corporation | Firing system for tubing conveyed perforating gun |
US4576233A (en) * | 1982-09-28 | 1986-03-18 | Geo Vann, Inc. | Differential pressure actuated vent assembly |
EP0179586A2 (en) * | 1984-10-24 | 1986-04-30 | Halliburton Company | Detonating assembly for tubing conveyed perforating gun |
US4598771A (en) * | 1981-02-23 | 1986-07-08 | Geo Vann, Inc. | Method and apparatus for firing a perforating gun and simultaneously recording the downhole pressure |
US4603741A (en) * | 1985-02-19 | 1986-08-05 | Hughes Tool Company | Weight actuated tubing valve |
US4629009A (en) * | 1984-09-10 | 1986-12-16 | Dresser Industries, Inc. | Method and apparatus for firing borehole perforating apparatus |
US4648471A (en) * | 1983-11-02 | 1987-03-10 | Schlumberger Technology Corporation | Control system for borehole tools |
US4756363A (en) * | 1987-01-15 | 1988-07-12 | Nl Industries, Inc. | Apparatus for releasing a perforation gun |
USRE32755E (en) * | 1981-02-17 | 1988-09-27 | Halliburton Company | Accelerated downhole pressure testing |
US5025861A (en) * | 1989-12-15 | 1991-06-25 | Schlumberger Technology Corporation | Tubing and wireline conveyed perforating method and apparatus |
US5078210A (en) * | 1989-09-06 | 1992-01-07 | Halliburton Company | Time delay perforating apparatus |
US5148868A (en) * | 1991-08-12 | 1992-09-22 | Christian J B | Method and apparatus for perforating tubing |
US5287741A (en) * | 1992-08-31 | 1994-02-22 | Halliburton Company | Methods of perforating and testing wells using coiled tubing |
US5366014A (en) * | 1993-11-04 | 1994-11-22 | Halliburton Company | Method and apparatus for perforating a well using a modular perforating gun system |
US5398760A (en) * | 1993-10-08 | 1995-03-21 | Halliburton Company | Methods of perforating a well using coiled tubing |
US5423382A (en) * | 1993-11-10 | 1995-06-13 | Dresser Industries, Inc. | Apparatus for releasing perforating gun equipment from a well casing |
US5503014A (en) * | 1994-07-28 | 1996-04-02 | Schlumberger Technology Corporation | Method and apparatus for testing wells using dual coiled tubing |
US5701957A (en) * | 1996-02-05 | 1997-12-30 | Halliburton Company | Well perforator isolation apparatus and method |
US5829538A (en) * | 1997-03-10 | 1998-11-03 | Owen Oil Tools, Inc. | Full bore gun system and method |
US6062310A (en) * | 1997-03-10 | 2000-05-16 | Owen Oil Tools, Inc. | Full bore gun system |
US6173783B1 (en) * | 1999-05-17 | 2001-01-16 | John Abbott-Brown | Method of completing and producing hydrocarbons in a well |
US6435278B1 (en) * | 2000-08-09 | 2002-08-20 | Halliburton Energy Services, Inc. | Firing head/perforating gun latching system and associated methods |
US6708761B2 (en) | 2001-11-13 | 2004-03-23 | Halliburton Energy Services, Inc. | Apparatus for absorbing a shock and method for use of same |
US20060048937A1 (en) * | 2004-09-09 | 2006-03-09 | Pinto C J | Perforation method and apparatus |
US20090236094A1 (en) * | 2008-03-18 | 2009-09-24 | Marsh Roger J | Full Bore Cementable Gun System |
US8893785B2 (en) | 2012-06-12 | 2014-11-25 | Halliburton Energy Services, Inc. | Location of downhole lines |
US8919236B2 (en) | 2012-10-09 | 2014-12-30 | William T. Bell | Perforating gun drop sub |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2169559A (en) * | 1937-07-06 | 1939-08-15 | Halliburton Oil Well Cementing | Formation tester |
US2456977A (en) * | 1941-11-01 | 1948-12-21 | Mccullough Tool Company | Well casing perforating gun and cartridge |
US2530966A (en) * | 1943-04-17 | 1950-11-21 | Standard Oil Dev Co | Well completion apparatus |
US2745495A (en) * | 1953-05-19 | 1956-05-15 | Johnston Testers Inc | Method of completing oil wells |
US2760408A (en) * | 1953-05-19 | 1956-08-28 | Johnston Testers Inc | Firing head |
US2847072A (en) * | 1953-06-15 | 1958-08-12 | Borg Warner | Methods for dual completion of oil and gas wells |
US2906339A (en) * | 1954-03-30 | 1959-09-29 | Wilber H Griffin | Method and apparatus for completing wells |
US2935131A (en) * | 1957-06-05 | 1960-05-03 | Jersey Prod Res Co | Method and apparatus for completing a well in a plurality of zones |
US3011551A (en) * | 1958-11-06 | 1961-12-05 | Halliburton Co | Fracturing gun |
US3291207A (en) * | 1960-12-19 | 1966-12-13 | Exxon Production Research Co | Well completion method |
-
1970
- 1970-10-15 US US80991A patent/US3706344A/en not_active Expired - Lifetime
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2169559A (en) * | 1937-07-06 | 1939-08-15 | Halliburton Oil Well Cementing | Formation tester |
US2456977A (en) * | 1941-11-01 | 1948-12-21 | Mccullough Tool Company | Well casing perforating gun and cartridge |
US2530966A (en) * | 1943-04-17 | 1950-11-21 | Standard Oil Dev Co | Well completion apparatus |
US2745495A (en) * | 1953-05-19 | 1956-05-15 | Johnston Testers Inc | Method of completing oil wells |
US2760408A (en) * | 1953-05-19 | 1956-08-28 | Johnston Testers Inc | Firing head |
US2847072A (en) * | 1953-06-15 | 1958-08-12 | Borg Warner | Methods for dual completion of oil and gas wells |
US2906339A (en) * | 1954-03-30 | 1959-09-29 | Wilber H Griffin | Method and apparatus for completing wells |
US2935131A (en) * | 1957-06-05 | 1960-05-03 | Jersey Prod Res Co | Method and apparatus for completing a well in a plurality of zones |
US3011551A (en) * | 1958-11-06 | 1961-12-05 | Halliburton Co | Fracturing gun |
US3291207A (en) * | 1960-12-19 | 1966-12-13 | Exxon Production Research Co | Well completion method |
Cited By (54)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3957115A (en) * | 1974-04-15 | 1976-05-18 | Otis Engineering Corporation | Method and apparatus for treating wells |
US3912013A (en) * | 1974-11-11 | 1975-10-14 | Vann Roy Randell | High temperature perforating method |
US3990507A (en) * | 1974-11-11 | 1976-11-09 | Vann Roy Randell | High temperature perforating apparatus |
US4009757A (en) * | 1975-02-03 | 1977-03-01 | Vann Roy Randell | Sand consolidation method |
US4078611A (en) * | 1975-10-14 | 1978-03-14 | Vann Roy Randell | High temperature perforating method |
US4105073A (en) * | 1977-09-26 | 1978-08-08 | Brieger Emmet F | Tubing conveyed sand consolidating method |
US4375834A (en) * | 1979-05-16 | 1983-03-08 | D & D Company Ltd. | Casing perforation method and apparatus |
US4299287A (en) * | 1980-05-19 | 1981-11-10 | Geo Vann, Inc. | Bar actuated vent assembly and perforating gun |
US4330039A (en) * | 1980-07-07 | 1982-05-18 | Geo Vann, Inc. | Pressure actuated vent assembly for slanted wellbores |
US4372384A (en) * | 1980-09-19 | 1983-02-08 | Geo Vann, Inc. | Well completion method and apparatus |
US4480690A (en) * | 1981-02-17 | 1984-11-06 | Geo Vann, Inc. | Accelerated downhole pressure testing |
USRE32755E (en) * | 1981-02-17 | 1988-09-27 | Halliburton Company | Accelerated downhole pressure testing |
US4598771A (en) * | 1981-02-23 | 1986-07-08 | Geo Vann, Inc. | Method and apparatus for firing a perforating gun and simultaneously recording the downhole pressure |
US4576233A (en) * | 1982-09-28 | 1986-03-18 | Geo Vann, Inc. | Differential pressure actuated vent assembly |
FR2542804A1 (en) * | 1983-03-17 | 1984-09-21 | Flopetrol | Perforators for wells of the oil type |
US4544034A (en) * | 1983-03-31 | 1985-10-01 | Geo Vann, Inc. | Actuation of a gun firing head |
EP0132330A2 (en) * | 1983-07-21 | 1985-01-30 | Halliburton Company | Tubing conveyed well perforating system |
US4512418A (en) * | 1983-07-21 | 1985-04-23 | Halliburton Company | Mechanically initiated tubing conveyed perforator system |
EP0132330A3 (en) * | 1983-07-21 | 1986-05-07 | Halliburton Company | Tubing conveyed well perforating system |
US4554981A (en) * | 1983-08-01 | 1985-11-26 | Hughes Tool Company | Tubing pressurized firing apparatus for a tubing conveyed perforating gun |
US4648471A (en) * | 1983-11-02 | 1987-03-10 | Schlumberger Technology Corporation | Control system for borehole tools |
US4526233A (en) * | 1984-01-20 | 1985-07-02 | Baker Oil Tools, Inc. | Releasable coupling for tubing conveyed subterranean well perforating gun |
US4629009A (en) * | 1984-09-10 | 1986-12-16 | Dresser Industries, Inc. | Method and apparatus for firing borehole perforating apparatus |
EP0179586A3 (en) * | 1984-10-24 | 1988-02-10 | Halliburton Company | Detonating assembly for tubing conveyed perforating gun |
EP0179586A2 (en) * | 1984-10-24 | 1986-04-30 | Halliburton Company | Detonating assembly for tubing conveyed perforating gun |
EP0180520A2 (en) * | 1984-10-29 | 1986-05-07 | Schlumberger Limited | Firing system for tubing conveyed perforating gun |
US4566544A (en) * | 1984-10-29 | 1986-01-28 | Schlumberger Technology Corporation | Firing system for tubing conveyed perforating gun |
EP0180520A3 (en) * | 1984-10-29 | 1988-02-24 | Schlumberger Limited | Firing system for tubing conveyed perforating gun |
US4603741A (en) * | 1985-02-19 | 1986-08-05 | Hughes Tool Company | Weight actuated tubing valve |
US4756363A (en) * | 1987-01-15 | 1988-07-12 | Nl Industries, Inc. | Apparatus for releasing a perforation gun |
US5078210A (en) * | 1989-09-06 | 1992-01-07 | Halliburton Company | Time delay perforating apparatus |
US5025861A (en) * | 1989-12-15 | 1991-06-25 | Schlumberger Technology Corporation | Tubing and wireline conveyed perforating method and apparatus |
US5148868A (en) * | 1991-08-12 | 1992-09-22 | Christian J B | Method and apparatus for perforating tubing |
US5287741A (en) * | 1992-08-31 | 1994-02-22 | Halliburton Company | Methods of perforating and testing wells using coiled tubing |
US5353875A (en) * | 1992-08-31 | 1994-10-11 | Halliburton Company | Methods of perforating and testing wells using coiled tubing |
US5398760A (en) * | 1993-10-08 | 1995-03-21 | Halliburton Company | Methods of perforating a well using coiled tubing |
US5366014A (en) * | 1993-11-04 | 1994-11-22 | Halliburton Company | Method and apparatus for perforating a well using a modular perforating gun system |
US5423382A (en) * | 1993-11-10 | 1995-06-13 | Dresser Industries, Inc. | Apparatus for releasing perforating gun equipment from a well casing |
US5503014A (en) * | 1994-07-28 | 1996-04-02 | Schlumberger Technology Corporation | Method and apparatus for testing wells using dual coiled tubing |
US5701957A (en) * | 1996-02-05 | 1997-12-30 | Halliburton Company | Well perforator isolation apparatus and method |
US5829538A (en) * | 1997-03-10 | 1998-11-03 | Owen Oil Tools, Inc. | Full bore gun system and method |
EP0968353A1 (en) * | 1997-03-10 | 2000-01-05 | Owen Oil Tools, Inc. | Full bore gun system |
EP0968353A4 (en) * | 1997-03-10 | 2000-05-03 | Owen Oil Tools Inc | Full bore gun system |
US6062310A (en) * | 1997-03-10 | 2000-05-16 | Owen Oil Tools, Inc. | Full bore gun system |
US6173783B1 (en) * | 1999-05-17 | 2001-01-16 | John Abbott-Brown | Method of completing and producing hydrocarbons in a well |
US6435278B1 (en) * | 2000-08-09 | 2002-08-20 | Halliburton Energy Services, Inc. | Firing head/perforating gun latching system and associated methods |
US6708761B2 (en) | 2001-11-13 | 2004-03-23 | Halliburton Energy Services, Inc. | Apparatus for absorbing a shock and method for use of same |
US20090200021A1 (en) * | 2002-03-27 | 2009-08-13 | Halliburton Energy Services, Inc. | Perforation method and apparatus |
US8028751B2 (en) | 2002-03-27 | 2011-10-04 | Halliburton Energy Services, Inc. | Perforation method and apparatus |
US20060048937A1 (en) * | 2004-09-09 | 2006-03-09 | Pinto C J | Perforation method and apparatus |
US20090236094A1 (en) * | 2008-03-18 | 2009-09-24 | Marsh Roger J | Full Bore Cementable Gun System |
US7686082B2 (en) * | 2008-03-18 | 2010-03-30 | Baker Hughes Incorporated | Full bore cementable gun system |
US8893785B2 (en) | 2012-06-12 | 2014-11-25 | Halliburton Energy Services, Inc. | Location of downhole lines |
US8919236B2 (en) | 2012-10-09 | 2014-12-30 | William T. Bell | Perforating gun drop sub |
Also Published As
Publication number | Publication date |
---|---|
US3706344B1 (en) | 1985-07-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3706344A (en) | Tubing conveyed permanent completion method and device | |
US4605074A (en) | Method and apparatus for controlling borehole pressure in perforating wells | |
US5361843A (en) | Dedicated perforatable nipple with integral isolation sleeve | |
US6491098B1 (en) | Method and apparatus for perforating and stimulating oil wells | |
US6761219B2 (en) | Casing conveyed perforating process and apparatus | |
US2876843A (en) | Gun perforator | |
US4187909A (en) | Method and apparatus for placing buoyant ball sealers | |
US5992289A (en) | Firing head with metered delay | |
US2906339A (en) | Method and apparatus for completing wells | |
US3361204A (en) | Method and apparatus for treating an underground formation | |
US4330039A (en) | Pressure actuated vent assembly for slanted wellbores | |
US2873675A (en) | Method and apparatus for detonating explosive devices in bore holes | |
EP0796980A2 (en) | Zonal isolation methods and apparatus | |
US3441095A (en) | Retrievable through drill pipe formation fluid sampler | |
JPS61109894A (en) | Firing system of tubing carrying type boring gun | |
US3712378A (en) | Wire line method and apparatus for cleaning well perforations | |
US4122899A (en) | Well perforator with anchor and method | |
US3727690A (en) | Method of fracturing a natural gas bearing earth formation | |
US4078611A (en) | High temperature perforating method | |
US20020148611A1 (en) | One trip completion method and assembly | |
US5224545A (en) | Eccentrically actuated perforating guns | |
USRE25407E (en) | Method and apparatus for detonating | |
US4113016A (en) | Casing perforation method and apparatus | |
US3630281A (en) | Explosive fracturing of petroleum bearing formations | |
US3064571A (en) | Perforator for well casing |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: GEO VANN, INC. A CORP. OF NEW MEXICO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST. EFFECTIVE. 9-21-77;ASSIGNOR:VANN, ROY R.;REEL/FRAME:003950/0314 Effective date: 19820217 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED FILE - (OLD CASE ADDED FOR FILE TRACKING PURPOSES) |
|
RR | Request for reexamination filed |
Effective date: 19831125 |
|
AS | Assignment |
Owner name: GEO INTERNATIONAL CORPORATION, CONNECTICUT Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PEABODY INTERNATIONAL CORPORATION;REEL/FRAME:004231/0865 Effective date: 19840229 Owner name: PEABODY INTERNATIONAL CORPORATION, GALION, OH A DE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:VANN, ROY R, SR.;REEL/FRAME:004231/0873 Effective date: 19770921 Owner name: GEO VANN, INC., 16350 PARK TEN PLACE DRIVE, HOUSTO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:GEO INTERNATIONAL CORPORATION;REEL/FRAME:004231/0869 Effective date: 19840229 Owner name: GEO INTERNATIONAL CORPORATION, 1 LANDMARK SQ., STA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:PEABODY INTERNATIONAL CORPORATION;REEL/FRAME:004231/0865 Effective date: 19840229 |
|
B1 | Reexamination certificate first reexamination | ||
AS | Assignment |
Owner name: GEO INTERNATIONAL CORPORATION, CONNECTICUT Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PEABODY INTERNATIONAL CORPORATION;REEL/FRAME:004555/0052 Effective date: 19850928 Owner name: GEO INTERNATIONAL CORPORATION, A CORP. OF DE. Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:PEABODY INTERNATIONAL CORPORATION;REEL/FRAME:004555/0052 Effective date: 19850928 |
|
AS | Assignment |
Owner name: VANN SYSTEMS INC.,STATELESS Free format text: CHANGE OF NAME;ASSIGNOR:GEO VANN, INC.;REEL/FRAME:004606/0291 Effective date: 19851015 Owner name: HALLIBURTON COMPANY,STATELESS Free format text: MERGER;ASSIGNOR:VANN SYSTEMS, INC.;REEL/FRAME:004606/0300 Effective date: 19851205 Owner name: HALLIBURTON COMPANY Free format text: MERGER;ASSIGNOR:VANN SYSTEMS, INC.;REEL/FRAME:004606/0300 Effective date: 19851205 Owner name: VANN SYSTEMS INC. Free format text: CHANGE OF NAME;ASSIGNOR:GEO VANN, INC.;REEL/FRAME:004606/0291 Effective date: 19851015 |