Produits et services

Oil and gas well production services using radial jetting

Abrégé

A method and apparatus for selectively reciprocating a downhole device in a wellbore relative to an upper portion of production tubing, so that the upper portion of production tubing does not need to be lifted to operate the downhole device. A shift tool between the upper production tubing and the deflector assembly is designed to lift a deflector assembly independently of the upper production tubing. The shift tool is operated by pressurized fluid delivered from the surface, for example with a fluid-delivery device on the end of coiled tubing lowered through the production tubing.

Classes IPC  ?

• E21B 7/08 - Dispositifs particuliers pour modifier la direction du forage, p. ex. trépans particuliers, joints articulés ou sifflets-déviateurs

Abrégé

A jetting nozzle for forming boreholes or for cleaning out other tubular formations has a vibration-inducing mechanism that maximizing penetration rates and expands the diameter of the boreholes. The vibration-inducing mechanism can be an internal turbine responsive to the flow of pressurized jetting fluid through the nozzle. The nozzle has forward openings defining a voraxial spray pattern for the forward-directed jetting portion of the fluid exiting the nozzle. The nozzle can also have a pointed end that is adapted to penetrate the formation. The vibration also reduces friction between the fluid supply hose and the borehole being jetted through the formation by the nozzle. A system for forming boreholes with the jetting nozzle and a method of forming boreholes is also disclosed.

Classes IPC  ?

• E21B 7/18 - Forage par action de jets de liquides ou de gaz, avec ou sans entraînement de grenaille

Abrégé

A jetting hose is conveyed downhole retracted on the end of a tubing string (coiled tubing) for jetting lateral boreholes from a main wellbore. The apparatus allows the operator to sense the speed at which the jetting hose and nozzle are penetrating the formation and adjust the coiled tubing feed-in rate accordingly, optimizing both the direction and length of the lateral borehole relative to the main wellbore.

Classes IPC  ?

• E21B 7/18 - Forage par action de jets de liquides ou de gaz, avec ou sans entraînement de grenaille

Abrégé

An apparatus and method for improving control over the milling force applied to a milling bit that is turned through a rotary drive to form a hole in a wellbore casing. A bit-weighting sub is applied between the tubing used to lower the rotary drive's motor into the wellbore and the rotary drive itself, the sub serving to take the weight of the tubing off the rotary drive when the motor lands in operative connection with the drive, and further serving to apply a known milling force to the drive (and thus to the bit) independent of the weight of the tubing. In a preferred form the sub includes a spring that is compressed against the drive when the tubing and motor are landed.

Classes IPC  ?

• E21B 29/00 - Découpage ou destruction de tubes, packers, bouchons ou câbles, situés dans les trous de forage ou dans les puits, p. ex. découpage de tubes endommagés, de fenêtresDéformation des tubes dans les trous de forageRemise en état des tubages de puits sans les retirer du sol
• E21B 43/11 - PerforateursPerméators
• E21B 7/04 - Forage dirigé
• E21B 7/08 - Dispositifs particuliers pour modifier la direction du forage, p. ex. trépans particuliers, joints articulés ou sifflets-déviateurs

Abrégé

The present application is directed to an apparatus for forming one or more holes in a wellbore casing, the apparatus comprising a deflector assembly and a drive assembly to drive said deflector assembly, wherein the deflector assembly may be optionally assembled at a surface of the wellbore prior to casing hole formation, and to methods employing the apparatus.

Classes IPC  ?

• E21B 7/06 - Modification de la direction du trou de forage
• E21B 7/08 - Dispositifs particuliers pour modifier la direction du forage, p. ex. trépans particuliers, joints articulés ou sifflets-déviateurs

Abrégé

The present application is directed an apparatus for installing boreholes in the formation surrounding a main wellbore, the apparatus comprising an indexing tool comprising an indexing deflector and a deflector shoe; the deflector shoe comprising an opening therethrough configured to receive a borehole forming member; wherein the indexing deflector is configured to direct the deflector shoe from a first setting to at least a second setting for the installation of boreholes at each setting through said opening; to methods employing the apparatus, and methods for using the indexing tool to locate and access boreholes.

Classes IPC  ?

• E21B 7/04 - Forage dirigé
• E21B 7/08 - Dispositifs particuliers pour modifier la direction du forage, p. ex. trépans particuliers, joints articulés ou sifflets-déviateurs