A wellbore tubular lift safety system and tubular lifting apparatus for removing tubulars can include a lower section with a lower base plate hole, sliding rods, and a lower gripping member. An upper section can have an upper base plate hole, a saw mounting plate hole, an upper gripping member, and
A wellbore tubular lift safety system and tubular lifting apparatus for removing tubulars can include a lower section with a lower base plate hole, sliding rods, and a lower gripping member. An upper section can have an upper base plate hole, a saw mounting plate hole, an upper gripping member, and cylinder barrels. The sliding rods can be engaged within the cylinder barrels, and can be moved therein for extending and retracting the upper section. The apparatus can be positioned over the wellbore in a retracted position to align with the tubular. The tubular can be lifted out of the wellbore by gripping the tubular using the gripping members, and extending and retracting the upper section. The apparatus can form lifting holes in the tubular, install lifting members in the lifting holes, saw the tubular, and allow the cut tubular to be lifted via a hoist.
대표청구항▼
1. A wellbore tubular lift safety system and a wellbore tubular lifting apparatus for removing tubulars from wellbores, wherein the wellbore tubular lifting apparatus comprising: a. a lower section comprising: (i) a lower base plate with a lower base plate hole;(ii) a plurality of sliding rods conne
1. A wellbore tubular lift safety system and a wellbore tubular lifting apparatus for removing tubulars from wellbores, wherein the wellbore tubular lifting apparatus comprising: a. a lower section comprising: (i) a lower base plate with a lower base plate hole;(ii) a plurality of sliding rods connected with the lower base plate; and(iii) a lower gripping member mounted to the lower baseplate, wherein the lower gripping member is configured to grip a tubular when the tubular is extending through the lower base plate hole; andb. an upper section comprising: (i) an upper base plate with an upper base plate hole;(ii) a saw mounting plate with a saw mounting plate hole;(iii) an upper gripping member connected with the upper base plate, wherein the upper gripping member is configured to grip the tubular when the tubular is extending through the upper base plate hole, and wherein the tubular is disposed at least partially above a wellbore and at least partially in the wellbore;(iv) a plurality of cylinder barrels connected with the upper base plate at a first end and with the saw mounting plate at a second end, wherein each sliding rod is movably engaged within one of the cylinder barrels;(v) a plurality of pistons, wherein each piston is engaged with one of the sliding rods, and wherein each piston is movably engaged within one of the cylinder barrels;(vi) a plurality of piston caps, wherein each piston cap is connected to an end of one of the cylinder barrels between one of the pistons and the saw mounting plate, and wherein the pistons and the sliding rods are configured to be moved within the cylinder barrels for extending and retracting the upper section from the lower section;(vii) one or more cutting devices connected to the saw mounting plate, wherein the each cutting device is disposed between the saw mounting plate and the upper base plate, and wherein the each cutting device comprises a cutting member configured to form at least one lifting hole into the tubular for receiving a lifting member; and(viii) a saw mounted to the saw mounting plate opposite the one or more cutting devices, wherein the wellbore tubular lift safety system is configured to: 1. be concentrically positioned over the wellbore in a retracted position to align the upper base plate hole, the lower base plate hole, and the saw mounting plate hole with the tubular;2. lift the tubular out of the wellbore by sequentially gripping the tubular using the upper gripping member and the lower gripping member, and extending and retracting the upper section relative to the lower section to raise the tubular to a predetermined distance from the wellbore through the upper base plate hole, the lower base plate hole, and the saw mounting plate hole;3. saw the tubular into a cut tubular using the saw; and4. allow the cut tubular to be lifted via a hoist. 2. The wellbore tubular lifting apparatus of claim 1, wherein the upper gripping member and the lower gripping member each comprise: a. a slip set; andb. a plurality of slip set cylinders disposed around the slip set and supported by a slip bowl. 3. The wellbore tubular lifting apparatus of claim 1, wherein the plurality of sliding rods connect with the lower base plate via rod base flanges. 4. The wellbore tubular lifting apparatus of claim 1, wherein the one or more cutting devices comprise a first pin drill connected to the saw mounting plate and a second pin drill connected to the saw mounting plate opposite the first pin drill, and wherein each cutting member comprises a first cutting member on the first pin drill and a second cutting member on the second pin drill. 5. The wellbore tubular lifting apparatus of claim 1, wherein each cutting member comprises variable sized drill bits having varied diameters and varied drill cutting surfaces for varying a diameter and a type of drill cutting surface according to a diameter and a weight of the tubular. 6. The wellbore tubular lifting apparatus of claim 5, wherein the variable sized drill bits comprise: diamond edged drill cutting surfaces, tungsten carbide edged drill cutting surfaces, sand covered drill cutting surfaces, ceramic drill cutting surfaces, or combinations thereof. 7. The wellbore tubular lifting apparatus of claim 1, wherein the one or more cutting devices comprise: an abrasive water jet, a laser, a variable speed tungsten carbide saw, or combinations thereof. 8. The wellbore tubular lifting apparatus of claim 1, wherein the saw is selected from a member of the group consisting of: a band saw, a blade saw, or a hydraulic rotating cutter. 9. The wellbore tubular lifting apparatus of claim 1, wherein the lifting member is selected from a member of the group consisting of: a pin, a shackle, a pad eye, a locking dog, or a grab bar. 10. The wellbore tubular lifting apparatus of claim 1, further comprising a remote control connected with the cylinder barrels for monitoring a lifting force separating the upper section from the lower section. 11. The wellbore tubular lifting apparatus of claim 10, wherein the remote control comprises a dead man switch to energize the upper gripping member, the lower gripping member, or combinations thereof when the upper gripping member or the lower gripping member fails or when the hoist releases. 12. The wellbore tubular lifting apparatus of claim 1, wherein the lower base plate engages a blowout preventer, a casing bowl, the ground, a wellhead, a rotary table, support beams, a portion of a rig floor, a portion of a drilling platform, a portion of a production platform, or a portion of a work over platform. 13. The wellbore tubular lifting apparatus of claim 1, wherein the tubular is well casing, well tubing, tubular with cement adhered thereto, coiled tubing, or combinations thereof. 14. The wellbore tubular lifting apparatus of claim 1, wherein the saw comprises a blade and a saw motor for operating the blade, wherein the saw is mounted on tracks on the saw mounting plate, and wherein saw hydraulic or pneumatic cylinders move the saw on the tracks. 15. The wellbore tubular lifting apparatus of claim 14, wherein a fluid sources is configured to flow hydraulic fluid or air into saw hydraulic or pneumatic cylinders to move the saw along the tracks for engaging the blade with the tubular for cutting the tubular.
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이 특허에 인용된 특허 (4)
Boyadjieff George I. (Anaheim CA) Campbell Andrew B. (San Marino CA), Jacking mechanism supported by a wellhead.
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