Sliding tool base structure device used for fracturing and capable of optimally utilizing offshore limited space

Abstract

The sliding tool base structure device for fracturing capable of optimally utilizing the offshore limited space comprises a sliding tool base device and a sliding dragging device, a booster beam set of the sliding tool base device is arranged on a deck, a sliding rail beam set is arranged on the booster beam set in a sliding mode, and an equipment bearing base is fixedly arranged on the sliding rail beam set; a deck bed board is arranged on the equipment bearing base, and the sliding dragging device and the sliding rail beam set are arranged in a matched mode. The scheme has the beneficial effects that the problem that the fracturing pump in the main deck area below the cantilever beam of the drilling ship cannot be hoisted and installed is solved, and the space below the main deck and the cantilever beam deck is fully utilized; a sliding tool base structure device is designed on a main deck and a deck below a cantilever beam in a sliding in-place mode, more fracturing pumps and fracturing equipment are installed and placed, deck space waste caused in the conventional equipment hoisting process is avoided, the cantilever beam coverage area is effectively utilized, and the operation space utilization rate is integrally increased by more than 15%; and the limited space of the existing drilling platform is effectively guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore oilfield engineering, and more particularly to a sliding tool base structure device for fracturing that optimizes the use of offshore confined space. Background Art

[0002] Drilling tests have confirmed the rich shale oil resources in my country's Beibu Gulf in the South China Sea. To effectively develop these resources, offshore platforms are urgently needed for offshore fracturing operations. Unlike large-scale fracturing operations in onshore oil fields, offshore drilling platforms are significantly constrained by deck space, particularly on the main deck and cantilever deck. Following the conventional offshore fracturing process, high-pressure areas such as fracturing pumps are located on the cantilever deck, while low-pressure areas such as fluid tanks and other auxiliary equipment are located on the main deck. For example, the Nanhai No. 4 platform can only accommodate six fracturing pumps for small-scale fracturing operations.

[0003] At the same time, the weather and sea conditions in the Beibu Gulf of the South China Sea are worse than those in other sea areas. When using support vessels to carry out large-scale fracturing operations, the equipment capacity is often limited, and the maximum operating displacement can only be 6-7m. 3 / min and cost limitations make this method less suitable for fracturing operations in the South China Sea.

[0004] Unlike large-scale fracturing operations in onshore oil fields, offshore drilling platforms are significantly limited by deck space, including the main deck and cantilever deck, and are unable to meet the requirements of a fracturing displacement of 10m 3 / min or above for large-scale offshore fracturing operations.

[0005] By utilizing the present invention's fracturing sliding tool base structure device for optimizing the use of confined offshore space, 1.35 square meters of deck space can be saved for the placement of generators and liquid addition pump skids. The main deck area covered by the cantilever beam is 80 square meters, and the overall equipment placement deck area is increased by 81.35 square meters compared to the original deck area, increasing the operating space utilization rate by 17.7%. At the same time, an additional 70 square meters of bulk material storage deck can be added. Using this device to optimize space utilization, 8 fracturing pumps can be installed to carry out operations, with a displacement of about 1.3m per pump. 3 / min, the present invention can meet the requirements of 10.4m 3 / min operating displacement, meeting the needs of large-scale fracturing operations in offshore oil fields. Summary of the Invention

[0006] The present invention overcomes the deficiencies in the prior art and provides a fracturing sliding tool base structure device that optimizes the use of confined space at sea.

[0007] A sliding tool base structure device for fracturing that optimizes the utilization of confined offshore space includes: a sliding tool base device and a sliding drag device. The sliding tool base device has a padding beam group arranged on the deck, a slide rail beam group is slidingly provided on the padding beam group, an equipment bearing base is fixedly provided on the slide rail beam group, a deck deck is provided on the equipment bearing base, and the sliding drag device is arranged in coordination with the slide rail beam group.

[0008] The raising beam group includes a plurality of raising beams, and each raising beam is arranged at equal distances along the setting direction of the slide rail beam group.

[0009] The sliding and dragging device includes a winch, a dragging cable device and a dragging guide device. The two ends of the dragging rope of the dragging cable device are fixedly connected to the winch and the dragging guide device respectively, and the dragging guide device is fixedly connected to the end of the slide rail beam.

[0010] The slide rail beam group comprises a plurality of slide rail beams arranged in parallel, and a plurality of guide devices are correspondingly provided on the sides of the slide rail beams.

[0011] The sides of the slide rail beam are correspondingly provided with a plurality of offset adjustment devices.

[0012] The beneficial effects of the present invention are:

[0013] This solution solves the problem that the fracturing pump cannot be hoisted and installed in the main deck area under the cantilever beam of the drilling ship. It makes full use of the space under the main deck and the cantilever beam deck. By adopting the sliding rail sliding position method, a sliding tooling base structure device is designed on the main deck and the deck under the cantilever beam to install and place more fracturing pumps and fracturing equipment, avoiding the waste of deck space caused by the conventional hoisting equipment process, effectively utilizing the cantilever beam coverage area and improving the overall utilization rate of the operating space by more than 15%, effectively ensuring the function of large-scale fracturing operation in the confined space of the existing drilling platform, and achieving a fracturing displacement of 10m3 in the confined space at sea. 3 / min or above for large-scale fracturing operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the sliding tool base device;

[0015] Figure 2 It is a structural diagram of the sliding and dragging device;

[0016] In the figure: 1. Raising beam assembly; 2. Slide rail beam assembly; 3. Equipment bearing base; 4. Deck planking; 5. Winch; 6. Towing rope device; 7. Towing guide device; 8. Offset adjustment device; 9. Guide device. DETAILED DESCRIPTION

[0017] Example

[0018] A sliding tool base structure device for fracturing that optimizes the utilization of confined offshore space includes: a sliding tool base device and a sliding dragging device. A padding beam group 1 of the sliding tool base device is arranged on the deck, a slide rail beam group 2 is slidingly provided on the padding beam group 1, an equipment bearing base 3 is fixedly provided on the slide rail beam group 2, a deck deck 4 is provided on the equipment bearing base 3, and the sliding dragging device is arranged in coordination with the slide rail beam group 2.

[0019] The raising beam group 1 includes a plurality of raising beams, and each raising beam is equidistantly arranged along the arrangement direction of the slide rail beam group 2 .

[0020] The sliding and dragging device includes a winch 5, a dragging cable device 6 and a dragging guide device 7. The two ends of the dragging rope of the dragging cable device 6 are fixedly connected to the winch 5 and the dragging guide device 7 respectively, and the dragging guide device 7 is fixedly connected to the end of the slide rail beam.

[0021] The slide rail beam group includes a plurality of slide rail beams arranged in parallel, and a plurality of guide devices 9 are correspondingly provided on the sides of the slide rail beams.

[0022] A plurality of offset adjustment devices 8 are correspondingly provided on the side of the slide rail beam.

[0023] like Figure 1 and Figure 2 As shown, the working principle of this scheme is as follows.

[0024] The raised beam group 1 is installed on the main deck of the offshore drilling platform and the deck under the cantilever beam to transmit the equipment load to the main deck structure and to bear the equipment's deadweight load, vibration load and sliding load.

[0025] The slide rail beam group 2 serves as the equipment installation bearing structure and the equipment sliding bearing structure.

[0026] The equipment bearing base 3 and the deck plank 4 cooperate to reduce the equipment load pressure on the slide rail beam group 2.

[0027] During use, the sliding fixture base assembly supports the weight of the equipment and moves it to a designated location. Furthermore, the elevated beam assembly 1 is composed of multiple slide rail beams, serving as the primary load-bearing structure. The slide rail beam assembly 2 includes multiple slide rail beams, each connected to a traction guide 7 at its end. This allows the winch 5 to move the slide rail beam assembly 2. This in turn moves the equipment support base 3, allowing the equipment to be moved to the designated location.

[0028] The offset adjustment device 8 and the guide device 9 are set on the corresponding sides of each slide rail beam to form a limit, forming a safety protection system to prevent the equipment from derailing due to dragging and sliding, ensuring the safety of the dragging and sliding operation. Among them, the offset adjustment device 8 and the guide device 9 use existing device components.

[0029] Preferably, the combined pipe row height of the elevated beam group 1 and the slide rail beam group 2 is 380 mm.

[0030] The equipment support base 3 is positioned above the rail beam assembly 2 at a height exceeding 420mm. In this embodiment, based on the dimensions of H-beams, H300 and H200 are stacked to ensure that the required height and strength are met. A too high support base 3 can easily cause vibration and wobbling, adversely affecting equipment operation. Considering the space under the cantilever beam, a 500mm support base 3 is optimal.

[0031] Furthermore, the winch 5 is set on the prefabricated installation base at both ends of the slide rail beam group 2. Based on the structural drawings of the sliding tooling base device and the installation equipment, SACS finite element analysis software can be used to perform structural strength design analysis to ensure the normal use of the device.

[0032] Furthermore, in this embodiment, in order to consider the sliding friction force F of the pulling force, that is, the dragging force to be applied, F = μN, where μ is the dynamic friction coefficient, the dynamic friction coefficient of metal, μ = 0.05 to 0.10 when there is lubricant, and the maximum μ = 0.10 is taken in this embodiment. The positive pressure N is the total weight of the main fracturing pump unit, that is, the weight of the equipment, and N = the weight of the fracturing pump skid + the power skid + the original bottom

[0033] =19.5T+13T+1.8T=34.3T, so F=μN=0.1x34.3T=3.43T, the rated pulling force of the variable frequency stepless speed regulating winch equipment is 8t. The above content can verify that the device used in this embodiment can realize the towing and placement of the fracturing equipment.

[0034] Furthermore, the working process of this device is as follows.

[0035] First, a sliding fixture base assembly with a span of 23,000mm, a width of 12,000mm, and a height of 740mm was constructed from structural steel in the deck space beneath the main deck and cantilever beams. The sliding fixture base assembly, along with equipment with a maximum pulling force of 8 tons, serves as a sliding towing device. The raised beam assembly 1 of the sliding fixture base assembly, serving as the main load-bearing beam, is constructed from H440mm structural steel, while the slide rail beams of the slide rail beam assembly 2 are constructed from H300mm structural steel. The sliding towing device utilizes a variable frequency stepless speed-regulating winch with a rated pulling force of 8 tons, a towing cable assembly 6, and a towing guide assembly 7 to meet safety requirements for rapid assembly and disassembly and controllable towing speed.

[0036] Secondly, based on the space available on the offshore platform and the characteristics of the various equipment, fracturing equipment such as the fracturing pump, fluid addition pump, and fluid supply pump are designed as three-dimensional placement modules. After the fracturing pump, generator skid, and other fracturing equipment are assembled and placed on the sliding fixture base, the fracturing pump and other fracturing equipment are towed to the designated installation location using the sliding traction device, offset adjustment device 8, and guide device 9 fixed to the main deck and secured with removable bolts, completing the installation of the fracturing equipment. The removal process is the reverse of the installation process. The connection between each module and the designed sliding fixture base is a bolted structure that meets the requirements for rapid equipment disassembly and assembly.

[0037] Finally, the equipment in the high- and low-pressure zones are staggered, and strength calculations are performed through structural modeling to meet the load-bearing design requirements, thereby achieving the goal of safe and systematic full utilization of deck space, avoiding the waste of deck space caused by conventional lifting equipment, and then installing more fracturing pumps and fracturing equipment, effectively ensuring the use of confined space on offshore drilling platforms for large-scale fracturing operations.

[0038] Compared with existing technologies, this technology has the following characteristics:

[0039] 1) This device can be used to carry out structural modular design of the installation equipment, and the equipment can be quickly installed and disassembled through the detachable bolt connection structure.

[0040] 2) The structural load-bearing capacity is designed according to 40T for a single device, which can be suitable for the installation and use of various equipment such as mud pumps, fracturing pumps, generator sets, etc., providing equipment support for large-scale fracturing operations in offshore oil fields using drilling ships.

[0041] 3) The device adopts a modular design structure with universality and can be used on different drilling ships, greatly reducing construction costs.

[0042] 4) The sliding and dragging device is equipped with a sliding guide device and an offset adjustment system, which can effectively ensure sliding safety.

[0043] In summary, the present invention expands the equipment installation area of 12m×8m, effectively utilizes the covered area under the cantilever beam deck, and designs the fracturing pump, generator skid and other fracturing equipment into a three-dimensional placement structure module and assembles it on the sliding tooling base device. The deck space is fully utilized based on the safety and systematization of the sliding tooling base device. Secondly, while ensuring the structural stability, a detachable material storage platform can be built on the top of the fracturing pump placed on the device, further expanding the deck use space, installing and placing more fracturing pumps and modular equipment, and effectively ensuring large-scale fracturing operations in the confined space of existing offshore drilling platforms.

[0044] The embodiments of the present invention are described in detail above, but the contents described are only preferred embodiments of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A sliding tool base structure device for fracturing that optimizes the utilization of confined space at sea, characterized in that: include: A sliding tool base device and a sliding dragging device, a raised beam group of the sliding tool base device is arranged on the deck, a sliding rail beam group is slidingly provided on the raised beam group, an equipment bearing base is fixedly provided on the sliding rail beam group, a deck plank is provided on the equipment bearing base, and the sliding dragging device is arranged in coordination with the sliding rail beam group.

2. The sliding tool base structure device for fracturing that optimizes the utilization of confined offshore space according to claim 1 is characterized in that: The raising beam group includes a plurality of raising beams, and each raising beam is arranged at equal distances along the setting direction of the slide rail beam group.

3. The sliding tool base structure device for fracturing that optimizes the utilization of confined offshore space according to claim 1 is characterized in that: The sliding and dragging device includes a winch, a dragging cable device and a dragging guide device. The two ends of the dragging rope of the dragging cable device are fixedly connected to the winch and the dragging guide device respectively, and the dragging guide device is fixedly connected to the end of the slide rail beam.

4. The sliding tool base structure device for fracturing that optimizes the utilization of confined offshore space according to claim 1 is characterized in that: The slide rail beam group comprises a plurality of slide rail beams arranged in parallel, and a plurality of guide devices are correspondingly provided on the sides of the slide rail beams.

5. The sliding tool base structure device for fracturing that optimizes the utilization of confined offshore space according to claim 4 is characterized in that: The sides of the slide rail beam are correspondingly provided with a plurality of offset adjustment devices.

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