Hydraulic system of offshore oil fixed platform module drilling machine

Abstract

The offshore oil fixed platform module drilling machine hydraulic system comprises a comprehensive hydraulic station, a valve assembly and hydraulic equipment, the comprehensive hydraulic station is arranged on a mud tank deck layer of a DES module, the comprehensive hydraulic station is provided with a supply connector with unified connector pressure, and the supply connector is connected with the hydraulic equipment through the valve assembly. According to the requirement that the module drilling machine covers and works all well slots of a platform, the pipeline of the comprehensive hydraulic station is arranged in the east-west drag chain, it is guaranteed that when the module drilling machine works all the well slots, the comprehensive hydraulic station can supply liquid to hydraulic equipment, the pipeline is not arranged in a working area, and potential safety hazards during operation of operators are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of modular drilling rigs, and in particular to a hydraulic system of a modular drilling rig for an offshore oil fixed platform. Background Art

[0002] On the offshore oil fixed platform module drilling rig, a hydraulic station needs to be configured to provide hydraulic power for the equipment. At present, the module drilling rig adopts multiple hydraulic devices to provide hydraulic power to the hydraulic module, but there are the following problems: (1) The number of hydraulic equipment on the modular drilling rig increases. Different hydraulic equipment requires different supply hydraulic pressure and response time. In addition, the equipment is distributed in a relatively scattered manner. The hydraulic control station of the corresponding equipment needs to be separately mounted on a skid, which not only increases the weight of the modular drilling rig, but also requires each hydraulic control station to be equipped with supply, return, and discharge pipelines. The pipelines are scattered on each deck and are difficult to bundle, which poses a hidden danger to personnel safety during operations.

[0003] (2) Some hydraulic equipment, including hydraulic turntable, hydraulic cathead, iron roughneck, second-level manipulator, etc., are located on the deck of the drilling platform, which belongs to the dangerous area. The corresponding hydraulic control station needs to be purchased or processed into explosion-proof equipment, and its explosion-proof grade requirements are high.

[0004] Some hydraulic equipment do not work and respond at the same time under the same working conditions. For example, the working conditions such as derrick lifting and derrick sliding are not carried out at the same time, so the hydraulic stations with corresponding equipment separately configured will increase the volume demand of hydraulic tanks. However, the offshore module drilling rig is arranged on the offshore oil fixed platform, and its space and weight are limited by the deck area of ​​the fixed platform module and the bearing capacity of the jacket. When the volume of the hydraulic tank is too large, although it meets the needs of the hydraulic equipment, it affects the overall platform design of the module drilling rig.

[0005] Therefore, there is an urgent need for a hydraulic system for a modular drilling rig on an offshore oil fixed platform. Summary of the invention

[0006] The present invention provides a hydraulic system for a module drilling rig on an offshore oil fixed platform, which solves the problem that there are many devices requiring hydraulic power and they are dispersedly distributed, so that the space occupied when providing hydraulic power is reduced and the hydraulic capacity is insufficient.

[0007] The present invention discloses a hydraulic system for a module drilling rig on a fixed offshore oil platform, comprising an integrated hydraulic station, a valve assembly and hydraulic equipment. The integrated hydraulic station is arranged on a mud tank deck layer of a DES module. The integrated hydraulic station is provided with a supply interface with a unified interface pressure, and the supply interface is connected to the hydraulic equipment through the valve assembly.

[0008] The offshore oil fixed platform modular drilling rig hydraulic system preferably comprises a first supply interface and a second supply interface, the pressure of the first supply interface is 21MPa, the pressure of the second supply interface is 16MPa, and the first supply interface and the second supply interface are respectively connected to the hydraulic equipment.

[0009] In the offshore oil fixed platform modular drilling rig hydraulic system, preferably, the integrated hydraulic station is also provided with a fluid discharge port and a fluid return port, and the fluid discharge port and the fluid return port are respectively connected to the hydraulic equipment.

[0010] The offshore oil fixed platform modular drilling rig hydraulic system is preferably configured such that the integrated hydraulic station is independently skidded.

[0011] The offshore oil fixed platform modular drilling rig hydraulic system preferably comprises an east-west bidirectional crawler, a north-south bidirectional crawler, a hydraulic turntable, a first hydraulic cathead, a second hydraulic cathead, an iron driller and a manipulator control box, the integrated hydraulic station controls the east-west bidirectional crawler and the north-south bidirectional crawler respectively through a sliding control box, and the hydraulic pipeline of the east-west bidirectional crawler is connected to the sliding control box through an east / west drag chain, the integrated hydraulic station is connected to the hydraulic turntable, the first hydraulic cathead, the second hydraulic cathead, the iron driller and the manipulator control box respectively through the east / west drag chain, and the integrated hydraulic station controls the first hydraulic cathead and the second hydraulic cathead through the driller's room, the integrated hydraulic station controls the manipulator through the manipulator control box, and the manipulator control box comprises a travel motor, a slewing motor, a clamp head amplitude adjustment hydraulic cylinder, a clamp head opening and closing hydraulic cylinder and a telescopic arm hydraulic cylinder.

[0012] The beneficial effects are: An integrated hydraulic station is set up as a separate skid and installed on the mud tank deck of the DES module. It belongs to the non-hazardous area and has no explosion-proof grade requirements. It is at a moderate distance from each hydraulic equipment and can meet the response time requirements of the hydraulic equipment.

[0013] A 21MPa supply interface, a 16MPa supply interface, a return interface and a discharge interface are set for the integrated hydraulic station, which optimizes the number of hydraulic pipelines and facilitates the difficulty of piping layout.

[0014] The hydraulic volume of the integrated hydraulic station is the maximum value under different working conditions, which optimizes the overall demand for the hydraulic tank volume, thereby reducing the overall weight of the modular drilling rig (especially the drilling table) and the area requirement of the hydraulic station.

[0015] As the DES module of the modular drilling rig needs to cover and operate all the well slots on the platform, the pipelines of the integrated hydraulic station are built into the east-west drag chain to ensure that the integrated hydraulic station can supply fluid to the hydraulic equipment when operating in each well slot, and the pipelines are not arranged in the operating area, reducing safety hazards for operators during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure for installing hydraulic equipment on the mud tank deck of the DES module; Figure 3 This is the connection diagram between the comprehensive hydraulic station and hydraulic equipment.

[0017] 1. Comprehensive hydraulic station; 2. Hydraulic turntable; 3. First hydraulic cathead; 4. Second hydraulic cathead; 5. Iron roughneck; 6. Driller's room; 7. Slip control box; 8. East / West drag chain; 9. East-West bidirectional crawler; 10. North-South bidirectional crawler; 11. Manipulator control box; 12. Telescopic arm hydraulic cylinder; 13. Travel motor; 14. Rotation motor; 15. Hydraulic cylinder for clamp head amplitude adjustment; 16. Hydraulic cylinder for clamp head opening and closing. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the above components. If not otherwise stated, the above terms have no special meaning and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] The present invention provides a hydraulic system for a modular drilling rig on an offshore oil fixed platform, comprising an integrated hydraulic station, a valve assembly and a hydraulic device. The integrated hydraulic station is arranged on the mud tank deck layer of the DES module. The integrated hydraulic station is provided with a supply interface with a unified interface pressure, and the supply interface is connected to the hydraulic device through the valve assembly. In response to the requirement that the modular drilling rig DES module needs to cover and operate all well slots of the platform, the pipeline of the integrated hydraulic station is built into the east-west drag chain to ensure that the integrated hydraulic station can supply fluid to the hydraulic device when operating each well slot, and the pipeline is not arranged in the operating area, thereby reducing the safety hazards of the operators during operation.

[0022] The entire technical process is described in detail below using a hydraulic system for an offshore oil fixed platform modular drilling rig as an example.

[0023] like Figure 1 As shown, a hydraulic system of a marine oil fixed platform modular drilling rig includes an integrated hydraulic station 1, a valve assembly and a hydraulic device. The integrated hydraulic station 1 is arranged on the mud tank deck layer of the DES module. The integrated hydraulic station 1 is provided with a supply interface with a unified interface pressure. The supply interface is connected to the hydraulic device through the valve assembly. The valve assembly is a distribution valve to realize separate control of each device, and an accumulator is arranged locally on the hydraulic device.

[0024] The supply interface includes a first supply interface and a second supply interface, the pressure of the first supply interface is 21 MPa, the pressure of the second supply interface is 16 MPa, and the first supply interface and the second supply interface are respectively connected to the hydraulic equipment.

[0025] The integrated hydraulic station 1 is also provided with a liquid discharge port and a liquid return port, and the liquid discharge port and the liquid return port are respectively connected to the hydraulic equipment.

[0026] Among them, the integrated hydraulic station 1 is a separate skid. Figure 2 and Figure 3As shown, the integrated hydraulic station 1 can control the hydraulic equipment directly or through the sliding control box 7, the driller's room 6, and the manipulator control box 11. The hydraulic equipment includes a hydraulic turntable 2, a first hydraulic cathead 3, a second hydraulic cathead 4, an iron roughneck 5, an east-west bidirectional crawler 9, a north-south bidirectional crawler 10, and a manipulator control box 11. The integrated hydraulic station 1 controls the east-west bidirectional crawler 9 and the north-south bidirectional crawler 10 respectively through the sliding control box 7, and the hydraulic pipeline of the east-west bidirectional crawler 9 is connected to the east / west drag chain 8 through the east / west drag chain 8. The integrated hydraulic station 1 is connected to the sliding control box 7, and the integrated hydraulic station 1 is connected to the hydraulic turntable 2, the first hydraulic cathead 3, the second hydraulic cathead 4, the iron driller 5 and the manipulator control box 11 through the east / west drag chain 8. In addition, the integrated hydraulic station 1 controls the first hydraulic cathead 3 and the second hydraulic cathead 4 through the driller's room 6, and the integrated hydraulic station 1 controls the manipulator through the manipulator control box 11. The manipulator control box 11 includes a travel motor 13, a slewing motor 14, a clamp head amplitude adjustment hydraulic cylinder 15, a clamp head opening and closing hydraulic cylinder 16 and a telescopic arm hydraulic cylinder 12.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hydraulic system for a modular drilling rig on an offshore oil fixed platform, characterized in that: It includes an integrated hydraulic station, a valve assembly and hydraulic equipment. The integrated hydraulic station is arranged on the mud tank deck layer of the DES module. The integrated hydraulic station is provided with a supply interface with a unified interface pressure. The supply interface is connected to the hydraulic equipment through the valve assembly.

2. The offshore oil fixed platform module drilling rig hydraulic system according to claim 1, characterized in that: The supply interface includes a first supply interface and a second supply interface, the pressure of the first supply interface is 21 MPa, the pressure of the second supply interface is 16 MPa, and the first supply interface and the second supply interface are respectively connected to the hydraulic equipment.

3. The offshore oil fixed platform module drilling rig hydraulic system according to claim 2, characterized in that: The integrated hydraulic station is also provided with a liquid discharge port and a liquid return port, and the liquid discharge port and the liquid return port are respectively connected to the hydraulic equipment.

4. The offshore oil fixed platform module drilling rig hydraulic system according to any one of claims 1 to 3, characterized in that: The comprehensive hydraulic station is independently skid-mounted.

5. The offshore oil fixed platform module drilling rig hydraulic system according to claim 4, characterized in that: The hydraulic equipment includes an east-west bidirectional crawler, a north-south bidirectional crawler, a hydraulic turntable, a first hydraulic cathead, a second hydraulic cathead, an iron driller and a manipulator control box. The integrated hydraulic station controls the east-west bidirectional crawler and the north-south bidirectional crawler respectively through a sliding control box, and the hydraulic pipeline of the east-west bidirectional crawler is connected to the sliding control box through an east / west drag chain. The integrated hydraulic station is connected to the hydraulic turntable, the first hydraulic cathead, the second hydraulic cathead, the iron driller and the manipulator control box respectively through the east / west drag chain, and the integrated hydraulic station controls the first hydraulic cathead and the second hydraulic cathead through the driller's room. The integrated hydraulic station controls the manipulator through the manipulator control box, and the manipulator control box includes a travel motor, a slewing motor, a clamp head amplitude adjustment hydraulic cylinder, a clamp head opening and closing hydraulic cylinder and a telescopic arm hydraulic cylinder.

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