Well drilling blowout preventer transfer pulley used in ocean drilling rig

Abstract

A well drilling blowout preventer transfer tackle used in an ocean drilling rig is provided with a folding track, the folding track is formed by connecting a fixed section track and a movable section track through a shaft, and the movable section track can rotate relative to the fixed section track; the fixed section track is fixed on the drilling machine module hull structure, the edge of the drilling machine module hull structure is provided with a fixed pin, the end part of the movable section track is provided with a bolt matched with the fixed pin, when the movable section track is recovered to the drilling machine module hull structure, the movable section track and the fixed section track form a 90-degree angle, and the bolt is inserted into the fixed pin; and when the movable section rails are unfolded, a locking oil cylinder is fixed between the end parts of the movable section rails. When the offshore drilling operation of the offshore drilling rig module is carried out, the drilling operation area is not limited at all, the drilling quantity of single drilling operation is maximized, the efficiency of the drilling operation of the offshore work is improved, and the development cost in the oil and gas development process is reduced for oil companies.

Description

Technical Field

[0001] The invention belongs to the field of ship construction and design, and in particular relates to a drilling blowout preventer transport pulley used in a narrow space of an offshore drilling rig. Background Art

[0002] In order to prevent the oil well from over-pressure and cause oil well blowout accidents during offshore oil and gas development and drilling, a blowout preventer is required to be installed at the wellhead to prevent blowouts. In the offshore drilling process, in order to improve the efficiency of drilling operations, the offshore engineering drilling rig module usually drills as many oil wells as possible in one area. However, due to the limitations of offshore operating conditions and construction equipment, the size of the drilling rig module needs to be as compact as possible. How to drill more oil wells in a limited space is the most important concern of oil companies. Therefore, during the development of the oil field, the company will arrange as many oil wells as possible in the area covered by the drilling rig module based on the layout of the drilling rig module. According to the needs of the operation, the drilling blowout preventer usually needs to complete the function and pressure test in the storage area first, and then be transported to the drilling operation area by a mobile pulley, and then transferred to each drilling well position by a crane above the drilling area. In order to ensure that the mobile pulley can be moved to the drilling operation area, it is necessary to set a corresponding mobile track in the drilling area, and the track will affect the number of wells in the drilling area of ​​the drilling rig module. This reduces drilling efficiency in the area and increases oil field production costs for oil companies. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a drilling blowout preventer transfer pulley for an offshore drilling rig, which aims to achieve the purpose of setting a corresponding moving track in the drilling area without affecting the number of wells drilled in the drilling area of ​​the drilling rig module. The technical solution adopted is:

[0004] A drilling blowout preventer transfer pulley for an offshore drilling rig comprises a foldable track, wherein the foldable track is connected by a fixed track section and a movable track section shaft, and the movable track section is rotatable relative to the fixed track section; the fixed track section is fixed to a drilling rig module hull structure, a fixing pin is provided at the edge of the drilling rig module hull structure, and a latch matching the fixing pin is provided at the end of the movable track section; when the movable track section is recovered to the drilling rig module hull structure, the movable track section is 90 degrees to the fixed track section, and the latch pin is inserted into the fixing pin; when the movable track section is unfolded, a locking cylinder is fixed between the ends of the movable track section.

[0005] The foldable track is slidably connected with a pulley platform, a rack is fixed on the inner side of the foldable track, gears are fixed at two corners of the pulley platform, and the gears are meshed with the rack teeth.

[0006] The above-mentioned drilling blowout preventer transfer pulley used in an offshore drilling rig, further, the gear is connected to a motor, and the gear is driven by the motor.

[0007] The above-mentioned drilling blowout preventer transfer pulley for offshore drilling rigs, further, the movable section track and the fixed section track are connected by a rotating mechanism, the rotating mechanism is composed of a rotating gear, a rotating shaft, and a motor, the rotating shaft is fixed to the end of the movable section track, the rotating shaft is fixed to the end of the fixed section track, the rotating gear is meshed with the rotating shaft teeth, and the rotating gear and the rotating shaft are driven by the motor.

[0008] The above-mentioned drilling blowout preventer transfer pulley used in an offshore drilling rig further has racks fixed to the fixed section track and the movable section track respectively. When the fixed section track is docked with the movable section track, the racks are also docked.

[0009] The advantages of the present invention are as follows:

[0010] 1. The use of this pulley solution can meet the offshore drilling operation of the marine drilling rig module without any restrictions in the drilling operation area, maximize the number of drillings in a single drilling operation, improve the efficiency of offshore drilling operations, and reduce the development cost of oil and gas development for oil companies.

[0011] 2. The movement and folding actions of the pulley scheme of the present invention are both realized by motor and gear transmission. The whole operation process has a high degree of automation, which reduces the difficulty of the operator's work. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the present invention when it is unfolded;

[0013] Figure 2 It is a schematic diagram of the structure of the present invention when it is recovered to the hull structure of the drilling rig module;

[0014] Among them, 1-drilling module hull structure, 2-movable section track, 3-gear, 4-pulley platform, 5-rack, 6-fixed section track, 7-rotation mechanism, 12-locking cylinder. DETAILED DESCRIPTION

[0015] The present invention will be further described in conjunction with the accompanying drawings.

[0016] like Figure 1 , 2As shown, a drilling blowout preventer transfer pulley for an offshore drilling rig has a foldable track, wherein the foldable track is connected by a fixed section track and a movable section track shaft, and the movable section track is rotatable relative to the fixed section track; the fixed section track is fixed to the hull structure of the drilling rig module, a fixing pin is provided at the edge of the hull structure of the drilling rig module, and a latch matching the fixing pin is provided at the end of the movable section track. When the movable section track is recovered to the hull structure of the drilling rig module, the movable section track is 90° to the fixed section track, and the latch is inserted into the fixing pin; when the movable section track is unfolded, a locking cylinder is fixed between the ends of the movable section track.

[0017] The movable section track is connected to the fixed section track through a rotating mechanism, which consists of a rotating gear, a rotating shaft, and a motor. The rotating shaft is fixed at the end of the movable section track, the rotating shaft is fixed at the end of the fixed section track, the rotating gear is meshed with the rotating shaft teeth, and the rotating gear and the rotating shaft are driven by the motor.

[0018] The foldable track is slidably connected with a pulley platform, a rack is fixed on the inner side of the foldable track, a rack is fixed on the fixed section track and the movable section track respectively, when the fixed section track is docked with the movable section track, the rack is also docked, gears are fixed on the two corners of the pulley platform, the gears are meshed with the rack teeth, and the gears are driven by a motor.

Claims

1. A drilling blowout preventer transfer tackle for use in an offshore drilling rig, characterized in that: A foldable track is provided, wherein the foldable track is connected by a fixed track section (6) and a movable track section (2) axis, and the movable track section is rotatable relative to the fixed track section; the fixed track section is fixed on a drilling module hull structure (1), a fixing pin (11) is provided at the edge of the drilling module hull structure, and a latch pin matching the fixing pin is provided at the end of the movable track section; when the movable track section is recovered to the drilling module hull structure, the movable track section is at 90 degrees to the fixed track section, and the latch pin is inserted into the fixing pin; when the movable track section is unfolded, a locking cylinder (12) is fixed between the ends of the movable track section; The foldable track is slidably connected with a pulley platform (4), a rack (5) is fixed on the inner side of the foldable track, and gears (3) are fixed at two corners of the pulley platform, and the gears are meshed with the rack teeth.

2. The drilling blowout preventer transfer tackle for use in an offshore drilling rig according to claim 1, characterized in that: The gear is connected to a motor, and the gear is driven by the motor.

3. The drilling blowout preventer transfer tackle for use in an offshore drilling rig according to claim 1, characterized in that: The movable track and the fixed track are connected via a rotating mechanism (7), which consists of a rotating gear, a rotating shaft, and a motor. The rotating shaft is fixed at the end of the movable track, the rotating shaft is fixed at the end of the fixed track, the rotating gear is meshed with the rotating shaft, and the rotating gear and the rotating shaft are driven by the motor.

4. The drilling blowout preventer transfer tackle for use in an offshore drilling rig according to claim 1, characterized in that: The fixed section track and the movable section track are each fixed with a rack. When the fixed section track and the movable section track are butted, the racks are also butted.

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