Matches 1 - 16 out of 16

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US20130032410 Core barrel assembly including a valve  
A core barrel assembly for retrieving a core sample. The core barrel assembly includes a retrieving element defining an inner tube for retrieving the core sample thereinto, a locking assembly...
US20130105227 HIGH PRODUCTIVITY CORE DRILLING SYSTEM  
High productivity core drilling systems include a drill string, an inner core barrel assembly, an outer core barrel assembly, and a retrieval tool that connects the inner core barrel assembly to a...
US20120305317 SYSTEMS AND METHODS FOR LIMITING WINCH OVERRUN  
A retrieval system for a wireline drilling system having a winch, a wireline rope connected to the winch, and a core sampler connected to the wireline rope. The retrieval system includes a...
US20110100718 CORE LIFTER  
A core lifter may be used in a drilling system. An exterior surface of the core lifter may include a plurality of longitudinally-oriented recesses. The core lifter may include a raised contact...
US20090229884 DETACHABLE LATCH HEAD FOR CORE DRILLING  
A latch head assembly for a core receiving apparatus including a core tube assembly and a retrieving head is provided. The latch head assembly includes a support, a first coupling for releasably...
US20090283327 JOINTED SPEARHEAD ASSEMBLY  
A jointed spearhead assembly can include a base portion that is adapted to be connected to a down-hole object and a spearhead portion having a first end and a second. The second end includes a...
US20130192901 UP-HOLE BUSHING AND CORE BARREL HEAD ASSEMBLY COMPRISING SAME  
A bushing for positioning within a core barrel assembly during an up-hole drilling operation.
US20140174828 Core Drilling Tools With Retractably Lockable Driven Latch Mechanisms  
Drilling systems and methods for deploying a latch mechanism upon reaching a drilling position. The drilling systems and methods permit spinning of a drill string to cause a core barrel head...
US20100012383 HIGH PRODUCTIVITY CORE DRILLING SYSTEM  
High productivity core drilling systems are described. The system includes a drill string, an inner core barrel assembly, an outer core barrel assembly, and a retrieval tool that connects the...
US20090283329 SONIC LATCH MECHANISM  
A head assembly includes a body, a spearhead operatively associated with the body and configured to translate axially relative to the body, and at least one latch operatively associated with the...
US20130092442 FULL CLOSURE CORE CATCHER  
A core catcher includes a housing having an inner wall that defines an axial bore through the housing. A retention member is disposed within the housing and is coupled to a first hinge tab that...
US20130056280 SONIC LATCH MECHANISM  
A head assembly includes a body, a spearhead operatively associated with the body and configured to translate axially relative to the body, and at least one latch operatively associated with the...
US20110174546 CORE DRILL BIT  
A drill bit is disclosed. The drill bit has an axis, and a barrel, and a cutting member fixed to the barrel. The barrel is arranged to engage a drill shaft for driving the drill bit around the...
US20150114723 Diamond core drill wire line latch assembly  
A latch assembly for a diamond core drill wire line. Included is a cylindrical main body having a main body interior, an outer wall, a main body end and a latch end. A ball hole is defined through...
US20160003038 Determining Gas Content of a Core Sample  
An inner barrel for a core barrel or a core barrel assembly, the inner barrel having one or more side walls bounding at least partially an elongate internal volume for receiving, in use, a...
US20150275603 Head Assembly  
A spear head assembly includes a spear point having a proximal end and an opposite pointed end. A sleeve has an axial passage and a first end from which the spear point extends, the spear point...
Matches 1 - 16 out of 16