TELESCOPIC MINI-RIG

• US 20160076310A1
• Filed: 09/17/2015
• Published: 03/17/2016
• Est. Priority Date: 09/17/2014
• Status: Active Grant

• Current Assignee: Wright's IP Holdings LLC
• Original Assignee: David C Wright
• Inventors: Wright, David C.
• Granted Patent: US 10,196,860 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: E21B 15/003 adapted to be moved on their substructure, e.g. with skidding means; adapted to drill a plurality of wells

Abstract

A system and method are usable as a telescoping, small-scale oil rig, having the ability to rotate tubulars in a wellbore, pull tubulars from the wellbore, and insert tubulars into the wellbore. The system comprises a telescopic derrick section, a casing jack platform, and a base section. The telescopic derrick comprises U-shaped substructure frames that can be nested together, and is connected to an adjacent substructure through hydraulic cylinders. When pressurized, the cylinders extend to separate each substructure and raise the telescopic derrick. The casing jack platform comprises a traveling casing jack and spider for holding, inserting and removing tubulars. The base section supports the telescopic derrick and comprises a rotary floor and another spider for holding, inserting and removing tubulars into and from the wellbore. The combination of the traveling spider and stationary spider can be used for inserting tubulars into the wellbore when the well is under pressure.

Claims

1. A mini drilling rig system comprising:

a base, wherein the base comprises a rotary floor and a first spider;

a platform located above and connected to the base, wherein the platform comprises a casing jack and a second spider; and

a derrick located above and connected to said platform, wherein the derrick comprises a first substructure, a second substructure, a third substructure, and a first and second pair of hydraulic rams, wherein the first pair of hydraulic rams acts to extend and retract the third substructure, and wherein the second pair of hydraulic rams acts to extend and retract the second substructure.

2. The system of claim 1, further comprising a third pair of hydraulic rams located between the base and the platform, wherein the third pair of hydraulic rams acts to extend and retract the casing jack.

3. The system of claim 2, wherein the third pair of hydraulic rams and the casing jack have a weight capacity of at least 1,000 tons.

4. The system of claim 1, wherein the rotary floor has a capacity of at least 800 tons.

5. The system of claim 1, wherein the platform further comprises a crane winch.

6. The system of claim 1, wherein one or more of the first substructure, the second substructure, or the third substructure further comprises a supporting structure.

7. The system of claim 1, wherein the platform further comprises a crane winch.

8. The system of claim 7, wherein the third substructure further comprises a crown block in communication with the crane winch.

9. The system of claim 8, further comprising a traveling block in communication with the crown block.

10. The system of claim 1, wherein the third substructure is internal to the second substructure when in the retracted position, and wherein the second substructure is internal to the first substructure when in the retracted position.

11. The system of claim 10, wherein the first pair of hydraulic rams are located between the second and third substructure, and wherein the second pair of hydraulic rams are located between the first and second substructure.

12. The system of claim 1, wherein the first spider is stationary, and wherein the second spider travels with the casing jack.

13. The system of claim 12, wherein the first and second spiders are concentric.

14. A method of moving pipe into or out of a drill string, the method comprising:

positioning a platform having a base and a telescoping derrick comprising a plurality of nested substructures above a wellbore;

extending a first set of hydraulic cylinders and raising a first substructure out of the plurality of substructures;

extending a second set of hydraulic cylinders and raising a second substructure of the plurality of substructures, wherein extending the second substructure further raises the first substructure; and

lifting one or more sections of pipe through the base and into the platform and telescoping derrick by utilizing a draw works, crane winch, crown block, traveling block, or combinations thereof.

15. The method of claim 14, wherein the step of extending the second set of hydraulic cylinders takes place after the step of extending the first set of hydraulic cylinders.

16. The method of claim 14, wherein the step of extending the first set of hydraulic cylinders takes place simultaneously with the step of extending the second set of hydraulic cylinders.

17. The method of claim 14, further comprising the step of actuating a first locking mechanism after extending the first set of hydraulic cylinders, and actuating a second locking mechanism after extending the second set of hydraulic cylinders.

18. The method of claim 14, further comprising, subsequent to the lifting, rotating the pipe for make-up or break-out through use of a traveling spider and a stationary spider.

19. The method of claim 18, further comprising the step of inserting the one or more sections of pipe into the wellbore using the combination of the traveling spider and the stationary spider, and wherein this step occurs while the wellbore is under pressure.