Offshore self-elevating platform for horizontal directional drilling construction

Abstract

The invention provides an offshore self-elevating platform for horizontal directional drilling construction, which comprises a directional drilling platform, a plurality of pile legs, a directional drilling system, an anchoring system and a dragging system, the directional drilling system, the anchoring system and the dragging system are all installed on the directional drilling platform. The main structure of the platform can be fixed above the sea surface by using a lifting system of the platform, and then directional drilling construction operation is carried out; and the device can also float on the sea surface like a traditional barge for directional drilling construction. And a more stable site which is not influenced by sea tide and can be reused is provided for offshore directional drilling construction. The problems that a hull of an existing directional drilling construction slab barge is not stable and is prone to being affected by sea water tide-up and tide-down, a fixed platform cannot be reused, and the building construction period is long are solved.

Description

Technical Field

[0001] The invention relates to the technical field of directional drilling offshore construction, and in particular to an offshore self-elevating platform for horizontal directional drilling construction. Background Art

[0002] Flatbed barge construction. The flatbed barge is equipped with equipment and areas for directional drilling construction, such as mud storage area, mud pump, drilling rig, crane, generator, drill rod layout area, and field office. During construction, the barge is fixed on the sea surface through the mooring system for operation.

[0003] Fixed platform construction. The equipment and work area on the fixed platform are similar to those on a flat barge. The installation method is to fix the entire structure on the sea surface by piling, and it cannot be moved flexibly.

[0004] Directional drilling at sea requires the stability of the construction platform. If a flat barge is used, it is fixed by anchor at sea and is easily affected by wind and waves, causing the hull to be unstable. Directional drilling at sea requires the absolute height of the construction platform to be fixed during high and low tides. If a flat barge is used, its absolute height cannot be guaranteed. When the barge is located in a shallow sea area, it may be stranded due to low tide. Fixed platforms cannot be reused and have a long construction period. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an offshore self-elevating platform for horizontal directional drilling construction in view of the deficiencies of the prior art.

[0006] The technical solution of the present invention to solve the above technical problems is as follows: an offshore self-elevating platform for horizontal directional drilling construction, comprising: a directional drilling platform, a plurality of pile legs, a directional drilling system, an anchoring system, and a towing system. The plurality of pile legs are liftably installed on the directional drilling platform, and the directional drilling system, the anchoring system and the towing system are all installed on the directional drilling platform.

[0007] The beneficial effects of the technical solution of the present invention are: the platform can use its own lifting system to fix the main structure above the sea surface, and then carry out directional drilling construction; it can also float on the sea surface like a traditional barge to carry out directional drilling construction. It provides a more stable, tide-free and reusable site for offshore directional drilling construction. It solves the problems of the existing directional drilling construction flat barge, which has an unstable hull and is easily affected by the ebb and flow of sea water, and the fixed platform cannot be reused and has a long construction period.

[0008] Furthermore, a lifting console is provided on the directional drilling platform, and the plurality of pile legs are connected to the lifting console, and the plurality of pile legs are all connected with pile shoes.

[0009] The beneficial effect of adopting the above further technical solution is that the lifting system is used to fix the platform as a whole on the sea and to lift the main structure.

[0010] Furthermore, the towing system includes: a towing cable and a cable winch, the cable winch is installed on the directional drilling platform, and the towing cable is connected to the cable winch.

[0011] The beneficial effect of adopting the above further technical solution is that the towing system is set up so that the tugboat tows the entire platform to move on the sea through this system.

[0012] Furthermore, the mooring system comprises: an anchor windlass, an anchor and an anchor cable, the anchor windlass is installed on the directional drilling platform, and the anchor is connected to the anchor windlass through the anchor cable.

[0013] The beneficial effect of adopting the above further technical solution is that the mooring system fixes the platform on the sea surface through the anchor.

[0014] Furthermore, the directional drilling system includes: a drilling rig, a laying device for adjusting the elevation angle of the drill rod, a mud area, a mud pump, a crane, a drill rod, a drill rod stacking area, and a directional drilling console. The laying device, the mud area, the mud pump, the crane, and the drill rod stacking area are all installed on the directional drilling platform, the drill rod is installed on the laying device, the drilling rig is connected to the drill rod, the mud pump is connected to the mud area, and the directional drilling console is respectively connected to the drilling rig, the laying device, the mud pump, and the crane.

[0015] The beneficial effect of adopting the above further technical solution is that the directional drilling system is used for offshore directional drilling construction, and can realize all functions of the excavation end and the entry end. During directional drilling construction, the drill rod laying device can adjust the angle according to the design requirements, and the drill rod laying device can freely set the elevation angle / depression angle to meet the requirements of different entry angles / excavation angles.

[0016] Furthermore, the directional drilling platform is provided with a ballast water system, which includes a ballast tank, a ballast water control center, a seawater pump, and a seawater pipeline. The ballast tank is installed on the directional drilling platform, the seawater pump is respectively connected to the ballast tank and the seawater pipeline, and the ballast water control center is connected to the seawater pump.

[0017] The beneficial effect of adopting the above further technical solution is that the ballast water system is used to adjust the distribution of seawater in the cabin to maintain the dynamic characteristics of the platform such as weight and balance.

[0018] Furthermore, the directional drilling platform is provided with an electric power system, which includes: a generator, a cable, and a distribution cabinet, and the generator is connected to the distribution cabinet via a cable.

[0019] The beneficial effect of adopting the above further technical solution is that the power system provides power energy for each system of the platform.

[0020] Furthermore, the directional drilling platform is provided with a fire-fighting system and a field office, and the fire-fighting system includes: a fire extinguisher, a fire hydrant, a fire monitor, a life buoy and an escape valve.

[0021] The beneficial effects of adopting the above further technical solution are: the fire protection system is used to ensure the fire safety of the platform. An on-site office is set up to meet the operational needs of personnel.

[0022] Furthermore, the directional drilling platform is a triangular structure, the number of the legs is three, and the three legs are arranged in a one-to-one correspondence with the three corners adjacent to the directional drilling platform.

[0023] The beneficial effect of adopting the above further technical solution is that the overall platform has a triangular shape and three pile legs, which is more convenient to fix on the seabed.

[0024] Furthermore, the directional drilling system is located in the middle of the directional drilling platform, the number of the mooring systems is two, and the two mooring systems are located one-to-one on both sides of the directional drilling platform; the number of the towing systems is two pairs, and the two pairs of towing systems are located one-to-one at both ends of the directional drilling platform.

[0025] The beneficial effects of adopting the above further technical solution are: the location design of each system facilitates the installation and maintenance of each system and rationally utilizes the space of the directional drilling platform.

[0026] Advantages of additional aspects of the present invention will be given in part in the following description, and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is one of the structural schematic diagrams of an offshore jack-up platform for horizontal directional drilling construction provided in an embodiment of the present invention.

[0028] Figure 2 A schematic structural diagram of a laying device provided in an embodiment of the present invention.

[0029] Figure 3 The second structural schematic diagram of the offshore jack-up platform for horizontal directional drilling construction provided in an embodiment of the present invention.

[0030] Explanation of the figure numbers: 1. Pile legs; 2. Crane; 3. Drilling rig; 4. Drill pipe; 5. Laying device; 6. Mud area; 7. Anchoring system; 8. Cable winch; 9. Towing cable; 10. Drill pipe stacking area. DETAILED DESCRIPTION

[0031] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention but not to limit the scope of the present invention.

[0032] like Figures 1 to 3 As shown, an embodiment of the present invention provides an offshore jack-up platform for horizontal directional drilling construction, including: a directional drilling platform, a plurality of pile legs 1, a directional drilling system, an anchoring system 7, and a towing system. The plurality of pile legs 1 can be lifted and lowered on the directional drilling platform, and the directional drilling system, the anchoring system 7 and the towing system are all installed on the directional drilling platform.

[0033] The beneficial effects of the technical solution of the present invention are: the platform can use its own lifting system to fix the main structure above the sea surface, and then carry out directional drilling construction; it can also float on the sea surface like a traditional barge to carry out directional drilling construction. It provides a more stable, tide-free and reusable site for offshore directional drilling construction. It solves the problems of the existing directional drilling construction flat barge, which has an unstable hull and is easily affected by the ebb and flow of sea water, and the fixed platform cannot be reused and has a long construction period.

[0034] The purpose of the present invention is to solve the problems that the existing flat barge for directional drilling construction is unstable, easily affected by the ebb and flow of sea water, the fixed platform cannot be reused, and the construction period is long. The present invention provides a more stable, tide-free and reusable site for offshore directional drilling construction.

[0035] like Figures 1 to 3 As shown, further, a lifting console is provided on the directional drilling platform, and the plurality of pile legs 1 are connected to the lifting console, and the plurality of pile legs 1 are all connected with pile shoes.

[0036] The beneficial effect of adopting the above further technical solution is that the lifting system is used to fix the platform as a whole on the sea and to lift the main structure.

[0037] like Figures 1 to 3 As shown, further, the towing system includes: a towing cable 9 and a cable winch 8, the cable winch 8 is installed on the directional drilling platform, and the towing cable 9 is connected to the cable winch.

[0038] The beneficial effect of adopting the above further technical solution is that the towing system is set up so that the tugboat tows the entire platform to move on the sea through this system.

[0039] like Figures 1 to 3 As shown, further, the mooring system 7 comprises: an anchor windlass, an anchor and an anchor cable, the anchor windlass is installed on the directional drilling platform, and the anchor is connected to the anchor windlass through the anchor cable.

[0040] The beneficial effect of adopting the above further technical solution is that the mooring system fixes the platform on the sea surface through the anchor.

[0041] like Figures 1 to 3 As shown, further, the directional drilling system includes: a drilling rig, a laying device 5 for adjusting the elevation angle of the drill rod, a mud area 6, a mud pump, a crane 2, a drill rod 4, a drill rod stacking area 10, and a directional drilling console. The laying device 5, the mud area 6, the mud pump, the crane 2, and the drill rod stacking area 10 are all installed on the directional drilling platform, the drill rod 4 is installed on the laying device 5, the drilling rig 3 is connected to the drill rod 4, the mud pump is connected to the mud area 6, and the directional drilling console is respectively connected to the drilling rig 3, the laying device 5, the mud pump and the crane 2.

[0042] The beneficial effect of adopting the above further technical solution is that the directional drilling system is used for offshore directional drilling construction, and can realize all functions of the excavation end and the entry end. During directional drilling construction, the drill rod laying device can adjust the angle according to the design requirements, and the drill rod laying device can freely set the elevation angle / depression angle to meet the requirements of different entry angles / excavation angles.

[0043] like Figure 2 As shown, the laying device 5 may include: a support plate, a pair of support rods, a pair of pull ropes and a pair of rotating mechanisms. An opening is provided on one side of the directional drilling platform. One end of the support plate is hinged to the directional drilling platform. The support plate is located at the opening position. A pair of support rods are installed on the directional drilling platform. A pair of rotating mechanisms are installed on the pair of support rods in a one-to-one manner. Both ends of the pull rope are connected to the rotating mechanism and the other end of the support plate in a one-to-one manner.

[0044] Figure 1 The dotted circle in the figure is the turning radius of the crane.

[0045] Furthermore, the directional drilling platform is provided with a ballast water system, which includes a ballast tank, a ballast water control center, a seawater pump, and a seawater pipeline. The ballast tank is installed on the directional drilling platform, the seawater pump is respectively connected to the ballast tank and the seawater pipeline, and the ballast water control center is connected to the seawater pump.

[0046] The beneficial effect of adopting the above further technical solution is that the ballast water system is used to adjust the distribution of seawater in the cabin to maintain the dynamic characteristics of the platform such as weight and balance.

[0047] Furthermore, the directional drilling platform is provided with an electric power system, which includes: a generator, a cable, and a distribution cabinet, and the generator is connected to the distribution cabinet via a cable.

[0048] The beneficial effect of adopting the above further technical solution is that the power system provides power energy for each system of the platform.

[0049] Furthermore, the directional drilling platform is provided with a fire-fighting system and a field office, and the fire-fighting system includes: a fire extinguisher, a fire hydrant, a fire monitor, a life buoy and an escape valve.

[0050] The beneficial effects of adopting the above further technical solution are: the fire protection system is used to ensure the fire safety of the platform. An on-site office is set up to meet the operational needs of personnel.

[0051] like Figures 1 to 3 As shown, further, the directional drilling platform is a triangular structure, the number of the pile legs 1 is three, and the three pile legs 1 are arranged one by one correspondingly adjacent to the three corners of the directional drilling platform.

[0052] The beneficial effect of adopting the above further technical solution is that the overall platform has a triangular shape and three pile legs, which is more convenient to fix on the seabed.

[0053] like Figures 1 to 3 As shown, further, the directional drilling system is located in the middle of the directional drilling platform, the number of the mooring systems 7 is two, and the two mooring systems 7 are located at both sides of the directional drilling platform in a one-to-one correspondence; the number of the towing systems is two pairs, and the two pairs of towing systems are located at both ends of the directional drilling platform in a one-to-one correspondence.

[0054] The beneficial effects of adopting the above further technical solution are: the location design of each system facilitates the installation and maintenance of each system and rationally utilizes the space of the directional drilling platform.

[0055] An offshore jack-up platform for horizontal directional drilling construction provided in an embodiment of the present invention can be an offshore jack-up platform for horizontal directional drilling construction. The platform can use its own lifting system to fix the main structure (offshore jack-up platform for horizontal directional drilling construction) above the sea surface, and then perform directional drilling construction operations; it can also float on the sea surface like a traditional barge to perform directional drilling construction. The functions of the platform include a directional drilling system, a lifting system, a towing system, an anchoring system, a ballast water system, a power system, a fire protection system, etc.

[0056] The main functions of each system are:

[0057] Directional drilling system - for offshore directional drilling construction, it can realize all functions of the excavation end and the entry end.

[0058] Lifting system - the platform is fixed on the sea as a whole and the main structure is lifted and lowered.

[0059] Towing system - the tugboat uses this system to tow the entire platform to move on the sea.

[0060] Mooring system - the platform is fixed to the sea surface by anchors.

[0061] Ballast water system - regulates the distribution of seawater in the cabin to maintain the weight, balance and other dynamic characteristics of the platform.

[0062] Power system - provides power to various systems on the platform.

[0063] Fire fighting system - ensures fire safety of the platform.

[0064] Others - Establish field offices to facilitate the operational needs of personnel.

[0065] When the platform needs to be fixed, the construction process is briefly as follows:

[0066] The platform (directional drilling platform) is moved to the construction sea area (towing system working) → the platform pile legs are inserted below the seabed until the overall structure is fixed (lifting system working) → the main structure of the platform rises to a suitable position above the sea surface → directional drilling construction operations are carried out (directional drilling system working).

[0067] When the platform is floating on the sea, the construction process is briefly as follows:

[0068] The platform is moved to the construction sea area (towing system working) → anchored to fix the platform (anchoring system working) → directional drilling construction operations are carried out (directional drilling system working).

[0069] During directional drilling construction, the drill rod laying device (laying device) can adjust the angle according to the design requirements to meet the requirements of different entry angles / exit angles.

[0070] The overall platform is triangular in shape with three pile legs, making it easier to fix on the seabed; the drill pipe laying device can freely set the elevation / depression angle.

[0071] 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 replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An offshore jack-up platform for horizontal directional drilling construction, characterized in that: include: A directional drilling platform, a plurality of pile legs, a directional drilling system, an anchoring system, and a towing system. The plurality of pile legs are liftably installed on the directional drilling platform. The directional drilling system, the anchoring system, and the towing system are all installed on the directional drilling platform.

2. The offshore jack-up platform for horizontal directional drilling construction according to claim 1, characterized in that: The directional drilling platform is provided with a lifting console, a plurality of pile legs are connected to the lifting console, and a plurality of pile legs are all connected with pile shoes.

3. The offshore jack-up platform for horizontal directional drilling construction according to claim 1, characterized in that: The towing system comprises: a towing cable and a cable winch. The cable winch is installed on the directional drilling platform, and the towing cable is connected to the cable winch.

4. The offshore jack-up platform for horizontal directional drilling construction according to claim 1, characterized in that: The mooring system comprises: an anchor windlass, an anchor and an anchor cable. The anchor windlass is installed on the directional drilling platform, and the anchor is connected to the anchor windlass through the anchor cable.

5. The offshore jack-up platform for horizontal directional drilling construction according to claim 1, characterized in that: The directional drilling system includes: a drilling rig, a laying device for adjusting the elevation angle of the drill rod, a mud area, a mud pump, a crane, a drill rod, a drill rod storage area, and a directional drilling console. The laying device, the mud area, the mud pump, the crane, and the drill rod storage area are all installed on the directional drilling platform, the drill rod is installed on the laying device, the drilling rig is connected to the drill rod, the mud pump is connected to the mud area, and the directional drilling console is respectively connected to the drilling rig, the laying device, the mud pump, and the crane.

6. The offshore jack-up platform for horizontal directional drilling construction according to claim 1, characterized in that: The directional drilling platform is provided with a ballast water system, which includes a ballast tank, a ballast water control center, a seawater pump, and a seawater pipeline. The ballast tank is installed on the directional drilling platform, the seawater pump is connected to the ballast tank and the seawater pipeline respectively, and the ballast water control center is connected to the seawater pump.

7. The offshore jack-up platform for horizontal directional drilling construction according to claim 1, characterized in that: The directional drilling platform is provided with an electric power system, which includes: a generator, a cable, and a power distribution cabinet. The generator is connected to the power distribution cabinet via a cable.

8. The offshore jack-up platform for horizontal directional drilling construction according to claim 1, characterized in that: The directional drilling platform is provided with a fire-fighting system and a field office, wherein the fire-fighting system includes: a fire extinguisher, a fire hydrant, a fire monitor, a life buoy and an escape valve.

9. The offshore jack-up platform for horizontal directional drilling construction according to claim 1, characterized in that: The directional drilling platform is a triangular structure, the number of the pile legs is three, and the three pile legs are arranged in a one-to-one correspondence with the three corners adjacent to the directional drilling platform.

10. The offshore jack-up platform for horizontal directional drilling construction according to claim 1, characterized in that: The directional drilling system is located in the middle of the directional drilling platform. There are two anchoring systems, which are located on both sides of the directional drilling platform in a one-to-one correspondence. There are two pairs of towing systems, which are located on both ends of the directional drilling platform in a one-to-one correspondence.

Images