|
Match
|
Document |
Document Title |
|
|
7255172 |
Hydrodynamic, down-hole anchor
A method of removably anchoring well tubing in a well bore may include selecting a well having a bore diameter and an anchor positioned therein. The anchor may have a housing defining an anchor...
|
|
|
7225867 |
Liner top test packer
A liner hanger test packer assembly includes an axially translated liner top dressing mill having a calibrated shear mechanism for securing the mill at a first, top dressing position. Tool string...
|
|
|
6626074 |
Down hole pipe and casing cutter
A down hole pipe cutter is provided to cut a section of pipe from the pipe's interior. The device includes a lower guide plate, an upper guide plate, a connector rod interconnecting the lower guide...
|
|
|
6422328 |
Dual cutting mill
A rotating tool for milling or drilling in a well bore, having one or more rotating cutting structures, with each cutting structure rotating about its own axis, and with the cutting structures...
|
|
|
6276452 |
Apparatus for removal of milling debris
An apparatus and method for drawing small milling debris into a combination milling and debris retrieval tool, during the performance of the milling operation. A milling tool has a fluid intake...
|
|
|
6183165 |
Process and device for separation of pipes or columns fixed in the ground
To separate relatively long upright pipes (13) which have a relatively large diameter, the lower end thereof being fixed in the ground, in particular of support legs (3) of an off-shore oil bore or...
|
|
|
6170576 |
Mills for wellbore operations
A wellbore mill has been invented that, in certain aspects, has a body having a top and a bottom and, optionally, a fluid flow channel extending therethrough from top to bottom with, optionally,...
|
|
|
6167961 |
Small diameter run in whipstock and method for setting in large diameter casing
A whipstock assembly 10 for setting within a casing C on an anchor A diverts a cutting mill M to cut a window in the casing. The whipstock assembly is passed through a restriction positioned above...
|
|
|
5988272 |
Apparatus and method for milling a well casing
Apparatus for milling the casing of an oil or gas well comprises a downhole assembly which is run into the well on a rotatable drill string. The assembly comprises a motor (6) the body of which is...
|
|
|
5984005 |
Wellbore milling inserts and mills
An array of cutting inserts has been invented having a plurality of adjacent inserts, each insert comprising a body having a top surface, a bottom, and a base, and a plurality of spaced-apart...
|
|
|
5931442 |
Submersible work vessel for installing a blow out preventer
A submersible work vessel and a method of using the same are disclosed. The vessel contains an internal work space. It also contains a set of openable jaws that are designed to engage an underwater...
|
|
|
5908071 |
Wellbore mills and inserts
A cutting insert for a tool for wellbore milling operations has been invented that has a body having a top, a bottom, and a base, and a plurality of cutting surfaces on the top of the body, one of...
|
|
|
5899268 |
Downhole milling tool
A tool for cutting or milling casing in a well is disclosed. It includes a plurality of blades extending outwardly to a substantially radial position for cutting the walls of casing strings and...
|
|
|
5772363 |
Piling remover
A pile remover has a first embodiment for removal of short pilings and a second embodiment for long pilings. Both embodiments include a pile-fitting tube with hydraulic cylinders at the top end of...
|
|
|
5709265 |
Wellbore window formation
New systems and methods have been invented for explosively forming openings, ledges, windows, holes, and lateral bores through tubulars such as casing, which openings may, in cerain aspects, extend...
|
|
|
5695010 |
Method of drilling around an existing casing pipe to regenerate an old well
A method of drilling the packing gravel and formation materials around an existing casing pipe in order to regenerate an old well. The method comprises the steps of sequentially filling the inside...
|
|
|
5649595 |
Milling method for liners extending into deviated wellbores
An apparatus and method of milling a liner extending from a deviated wellbore into a main wellbore is disclosed. The liner is inserted through a window and cemented in place with the cement...
|
|
|
5626189 |
Wellbore milling tools and inserts
A cutting insert for wellbore milling operations is disclosed which, in certain embodiments, has two or more top milling surfaces on an insert body with the surfaces at different heights above a...
|
|
|
5318395 |
Method and apparatus for porting lateral connections in lined pipelines
A method and apparatus for porting lateral connections in a lined pipeline from the lateral side of the liner. An access hole is formed through the liner material covering the lateral connection. A...
|
|
|
5253710 |
Method and apparatus to cut and remove casing
An apparatus is established which facilitates the cutting and removal of well casing on a single trip into the wellbore. The apparatus is run into the wellbore on the tubing string and provides a...
|
|
|
5181564 |
Milling tool
A tool for milling a down-hole casing or tubing comprising a tubular body rotatable about its longitudinal axis and having a longitudinal passage therethrough. Means is provided at a first end of...
|
|
|
5150755 |
Milling tool and method for milling multiple casing strings
A cutting tool (22) includes a plurality of pivoted blades (36) for swinging outwardly to an expanded radial position for first cutting the walls of multiple casing strings (10, 11), and then...
|
|
|
5086838 |
Tapered cutting tool for reaming tubular members in well bore
A cutting tool (20) has a tool body (26) positioned within a metal casing (12) for reaming the inner peripheral surface of the casing (12) to a uniform smooth inner diameter. Tool body (26) has a...
|
|
|
5058666 |
Cutting tool for removing materials from well bore
A cutting tool (10) for removing members downhole from a well bore and adapted to be inserted within a well from the upper end (12) of the casing (14). The cutting tool (10) includes a plurality of...
|
|
|
5038859 |
Cutting tool for removing man-made members from well bore
A cutting tool (10) for removing metal tubular members held in stationary position downhole from a well bore and adapted to be inserted within a well. The cutting tool (10) includes a plurality of...
|
|
|
5027914 |
Pilot casing mill
A pilot casing mill for removing unwanted pipe from a well bore, which includes a cylindrical pilot having helical vanes and adapted for mounting on one end of a cylindrical mill body. The mill...
|
|
|
5014778 |
Milling tool for cutting well casing
An oil field cutting tool (10) for progressively cutting away a tubular member (14) installed within a well from the upper annular end (12) of the tubular member (14). The cutting tool (10)...
|
|
|
5010955 |
Casing mill and method
A casing mill for milling pipe cemented in an oil well comprises a body with a plurality of fixed milling blades having a diameter corresponding to the outside diameter of the pipe to be milled,...
|
|
|
4984488 |
Method of securing cutting elements on cutting tool blade
A cutting tool (10) for removing members downhole from a well bore and adapted to be inserted within a well from the upper end (12) of the casing (14). The cutting tool (10) includes a plurality of...
|
|
|
4662436 |
Tool for washing over, cutting and retrieving a portion of a pipe within a well bore
There is disclosed a tool for washing over, cutting and retrieving a portion of a pipe or "fish" stuck within a well bore. The tool includes flipper dogs which may move downwardly over a coupling...
|
|
|
4099561 |
Overshot cutter with flexible release cage
An overshot cutter includes concentric inner and outer members, the latter having a radially flexible portion thereon. A gripper for gripping a portion of a drill string is mounted on the flexible...
|
|
|
3848667 |
SHEARED PIPE CUTTER
A device for cutting through the exposed portion of drill pipe supported in an underwater blowout preventor which pipe has been sheared to provide for a quick abandonment of the drilling, said...
|
|
|
3782459 |
METHOD FOR CUTTING AND RETRIEVING PIPE FROM A FLOATING DRILL SHIP
A method and apparatus for cutting and retrieving a well pipe (having connecting collars and disposed within a well bore) from a floating drill ship utilizing a drill string, slack joint, downhole...
|
|
|
3595313 |
TUBE CUTTING TOOL
A cutting tool is lowered into a well bore over a string of tubes to cut the tubing at any desired depth by rotation of the tool body. Spring blades anchored to the tool body at their lower ends,...
|
|
|
3396794 |
Washover tool, pipe cutter and retriever
|
|
|
3299951 |
Method and apparatus for hanging well pipe
|
|
|
3217816 |
Method of removing pipe
|
|
|
3204695 |
Casing landing device
|
|
|
3174548 |
Combination washover tool, pipe cutter and retriever
|
|
|
3137348 |
Apparatus and method for drilling and completing a well
|
|
|
3106245 |
Downhole plugging device for fishing tool
|
|
|
3080241 |
Outside pipe-cutting tool
|
|
|
3074482 |
Down hole pipe plugging tool
|
|
|
3056453 |
Releasing washover outside cutter
|
|
|
3031015 |
Pipe cutter
|
|
|
3006412 |
Outside pipe cutter
|