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8069920 |
Lateral well locator and reentry apparatus and method
A down-hole assembly used to locate an existing window in a main cased well bore and guide equipment through the window and into a lateral well bore after removal of a whip stock. The assembly...
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7980307 |
Downhole window finder system
An apparatus for finding a pre-existing downhole window includes a body having a deflector ramp and a cavity, and an extendable dog disposed in the cavity, the dog mechanically moveable between a...
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7866398 |
Umbilical termination assemblies
An underwater termination assembly for use with a subsea system such as a well tree, comprises a construction having first and second limbs substantially at a right-angle to each other, which...
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7353867 |
Whipstock assembly and method of manufacture
The present invention discloses a whipstock assembly (100) for use in forming a lateral borehole from a parent wellbore. The whipstock assembly comprises a body (122) and a deflection member 120)...
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7331387 |
Downhole window finder and method of using the same
The present invention relates to a downhole method and apparatus for locating a window in a wellbore casing and determining the depth and orientation of said window. Apparatus of the present...
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7284607 |
System and technique for orienting and positioning a lateral string in a multilateral system
A technique that is usable with a subterranean well that has a first string that lines a borehole includes running a second string into the well and engaging a deflecting face of a deflector to...
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7069996 |
Completion of lateral well bores
The present invention relates to the completion of lateral well bores and provides a method comprising the steps of installing a datum device in a main well bore so as to provide a datum height...
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6761217 |
Downhole latch assembly and method of using the same
Downhole apparatus for locating equipment in a required depth and orientation within a well bore, the apparatus comprising a body and a latching member mounted on said body so as to be movable...
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6755248 |
One trip through tubing window milling apparatus and method
A one-trip through tubing window milling system is disclosed. The whipstock is delivered with the mill and downhole motor in a downhole assembly which further includes MWD equipment for proper...
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6684953 |
Wireless packer/anchor setting or activation
The present invention discloses the concept of using, for the purpose of operating a well control tool such as setting a packer, slip or whipstock, wireless data signal emissions from a downhole...
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6283208 |
Orienting tool and method
An assembly for formation and completion of deviated wellbores is disclosed which includes a toolguide and a casing section which can be used together or separately. The toolguide includes a lower...
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6260618 |
Method for locating placement of a guide stock in a multilateral well
A method for locating placement of a guide stock in a multilateral well wherein the guide stock is properly aligned with the lateral borehole. The method employs an impression packer with a scribed...
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6244340 |
Self-locating reentry system for downhole well completions
A self-locating reentry system is provided to allow reliable reentry from a primary wellbore into one or more secondary wellbores. The reentry system may include one or more self-locating...
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6209648 |
Method and apparatus for connecting a lateral branch liner to a main well bore
A method and apparatus for establishing connectivity of lateral branch liners to main well casings to achieve predictable and stable mechanical connectivity at the lateral junction of branch well...
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6192748 |
Dynamic orienting reference system for directional drilling
A directional drilling control system allows dynamic orientation of downhole drilling equipment in unstable or corrupt natural magnetic fields without the use of gyroscopic measurement devices. The...
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6138756 |
Milling guide having orientation and depth determination capabilities
A milling guide assembly includes features permitting a milling guide to be accurately positioned within a subterranean well. In a described embodiment, a milling guide has a logging tool attached...
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5579829 |
Keyless latch for orienting and anchoring downhole tools
A keyless latch assembly automatically aligns and fixes the axial and circumferential position of a whipstock within a surrounding casing joint. Alignment and fixing of the whipstock ensures proper...
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5488989 |
Whipstock orientation method and system
A deflecting tool or whipstock is oriented and anchored in a well casing during a single trip of a running string so that a window can be formed in the wall of the casing at a selected azimuth. The...
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4304299 |
Method for setting and orienting a whipstock in a well conduit
A method is provided for the angular orientation of a whipstock having an arcuate tool directing face and a whipstock anchor in a packer which is installed in a well, the packer and the anchor...
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3349845 |
Method of establishing communication between wells
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3312283 |
System for installing and retrieving well tools in well strings
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3242985 |
Method for re-entry of damaged well pipe
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3070166 |
Prevention of erosion of flow tubings in oil and gas wells
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2953350 |
Orienting apparatus
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