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Class Information
Number: 175/4
Name: Boring or penetrating the earth > Boring with explosion in inaccessible hole > Driving core receiver by explosion or with receptacle collecting material in bore
Description: Subject matter directed to an explosive apparatus which includes or is combined with (1) a core receiving barrel or tube which is propelled into the formation by an explosive charge or (2) a receptacle or the like which is described as adapted to collect and remove a sample of the formation from the hole.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7441601 |
Perforation gun with integral debris trap apparatus and method of use |
Oct. 28, 2008 |
| 6976392 |
Atomic clock for downhole applications |
Dec. 20, 2005 |
| 6845825 |
Method and apparatus for attaching/detaching drill rod |
Jan. 25, 2005 |
| 6837105 |
Atomic clock for downhole applications |
Jan. 4, 2005 |
| 6681873 |
Core stabilization apparatus and method therefor |
Jan. 27, 2004 |
| 5445228 |
Method and apparatus for formation sampling during the drilling of a hydrocarbon well |
Aug. 29, 1995 |
| 5031536 |
High temperature and pressure igniter for downhole percussion coring guns |
Jul. 16, 1991 |
| 4993503 |
Horizontal boring apparatus and method |
Feb. 19, 1991 |
| 4979576 |
Percussion core gun construction and cable arrangement |
Dec. 25, 1990 |
| 4827823 |
Bullet firing mechanism with retrieval cable |
May. 9, 1989 |
| 4750570 |
Formation sampling bullet and cables therefor |
Jun. 14, 1988 |
| 4702327 |
Core sample taking bullet construction |
Oct. 27, 1987 |
| 4665791 |
Method for accelerating an object and propelling arrangement for implementing the method for such object, particularly an object to be driven into ground below water |
May. 19, 1987 |
| 4609056 |
Sidewall core gun |
Sep. 2, 1986 |
| 4569403 |
Formation sampling bullet |
Feb. 11, 1986 |
| 4339947 |
Downhole sampling method and apparatus |
Jul. 20, 1982 |
| 4280568 |
Sidewall sampling apparatus |
Jul. 28, 1981 |
| 4220212 |
Apparatus for monitoring the operation of well bore guns |
Sep. 2, 1980 |
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