Antifouling cofferdam for underground operation site

Abstract

The utility model relates to the technical field of oil well operation, and discloses an anti-fouling cofferdam for an underground operation site, which comprises anti-seepage cloth, a plurality of foundation piers and a plurality of cross beams, the plurality of foundation piers are placed according to the shape and the size of the cofferdam, and the plurality of cross beams are fixed on the foundation piers to form a framework of the cofferdam. The shape and the size of the anti-seepage cloth are matched with the shape and the size of the required cofferdam, and the anti-seepage cloth is fixed on the cross beam. The cofferdam structure is improved, the overall structure of the cofferdam is constructed in the mode that the foundation piers and the cross beams are matched in an inserted mode, and the cofferdam has the advantages of being simple and reliable in structure, efficient in field disassembly and assembly, low in manufacturing, transporting and maintaining cost and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of oil well operations, in particular to an anti-pollution cofferdam for downhole operation sites. Background Art

[0002] At present, under the strict domestic environmental protection requirements, how the oilfield downhole operation department can achieve clean well workover, break through the traditional environmental protection operation status quo, control pollutant generation from the source, and achieve the goals of safe, environmental protection and economical well workover is the primary task of construction operations.

[0003] In order to prevent the pollution of the earth and the environment by crude oil and sewage caused by well workover operations, the prior art adopts the method of building a surrounding pool under the pollutants to centrally isolate the pollutants. For example, the Chinese patent "An environmentally friendly cofferdam that can be recycled in a well site" with the authorization announcement number CN203961874U includes a cofferdam and a high-strength wire anti-seepage cloth. The cofferdam is composed of four cylindrical inflatable frames. An inflatable nozzle and a sticky chain are provided on the outer side and lower part of each cylindrical inflatable frame; the high-strength wire anti-seepage cloth is laid on the cofferdam, and the sticky chains corresponding to the high-strength wire anti-seepage cloth and the cofferdam are adhesively bonded together to fix the high-strength wire anti-seepage cloth on the cofferdam. This kind of inflatable cofferdam requires supporting inflatable equipment during use, and the inflatable frame is prone to breakage and air leakage during field use, and its service life and reliability cannot meet the actual needs.

[0004] There is also a kind of environmental protection cofferdam with a trapezoidal cross-section and a length of 1 m shown in the attached Figure 1-2 figure, which is buckled section by section, and a right-angled cofferdam structure is adopted at the four corners to jointly build a rectangular surrounding pool with a length × width × height = 10m × 12m × 0.35m, and a plastic film is laid on the rectangular surrounding pool to isolate the pollutants from flowing into the ground. This trapezoidal cofferdam is made by shearing and bending galvanized sheets. Although the processing is simple, a large number of cofferdams need to be processed during use, the cost is high, a large amount of space is occupied during transportation, and it is severely corroded during field use and needs to be frequently polished and painted for maintenance.

[0005] Therefore, the existing anti-pollution cofferdams all need to be improved. Summary of the Utility Model

[0006] Aiming at the problems existing in the prior art: the existing anti-pollution cofferdams cannot meet the actual needs in terms of construction efficiency, reliability and use and maintenance costs. The purpose of the utility model is to provide an anti-pollution cofferdam for downhole operation sites. By improving the cofferdam structure and using the insertion and cooperation of base piers and cross beams to construct the overall structure of the cofferdam, it has the advantages of simple and reliable structure, high efficiency in on-site disassembly and assembly, low manufacturing, transportation and maintenance costs, etc., and is convenient for large-area popularization and application.

[0007] To achieve the above object, the technical solution of the present utility model is as follows:

[0008] An anti-pollution cofferdam for downhole operation site, including an anti-seepage cloth, further including base piers and cross beams. A plurality of the base piers are arranged according to the shape and size of the required cofferdam, and a plurality of the cross beams are fixed on the base piers to form the framework of the cofferdam. The shape and size of the anti-seepage cloth are adapted to the shape and size of the required cofferdam, and the anti-seepage cloth is fixed on the cross beams.

[0009] The present utility model is further arranged such that: the cross beam and the base pier are fixed by means of plug-in fit.

[0010] The present utility model is further arranged such that: an installation groove is formed at the top of the base pier, and the cross beam is in plug-in fit with the installation groove.

[0011] The present utility model is further arranged such that: the installation groove is formed on the top surface of the base pier and is recessed downward.

[0012] The present utility model is further arranged such that: the installation groove is cross-shaped.

[0013] The present utility model is further arranged such that: the base pier is made of concrete material.

[0014] The present utility model is further arranged such that: the cross beam is made of stainless steel material.

[0015] The present utility model is further arranged such that: the cross beam has multiple length specifications.

[0016] The present utility model is further arranged such that: hooks for fixing the anti-seepage cloth are provided on the cross beam.

[0017] The present utility model is further arranged such that: hanging holes are provided at the edge part of the anti-seepage cloth.

[0018] In summary, the beneficial effects achieved by the present utility model are as follows:

[0019] (1) The structure of a single base pier and each cross beam is simple, the manufacturing cost is low, the processing cycle is short, and each component is universal, and can be interchanged during on-site installation;

[0020] (2) The base pier is made of concrete, and the cross beam is made of stainless steel material, which is suitable for various laying site environments in the wild, wear-resistant and rust-proof, has a long service life, and high reliability;

[0021] (3) The cross beam and the base pier are fixed by means of plug-in fit, and the installation groove is located at the top of the base pier, and the installation is simple and fast, and the on-site disassembly and assembly efficiency is high;

[0022] (4) The installation groove is cross-shaped and can be suitable for the right-angle bending part of the cofferdam;

[0023] (5) The cross beam has various length specifications, which is convenient for flexibly selecting cross beams of different lengths for assembly at the installation site according to the size of the required cofferdam. While further improving the assembly efficiency, it can also reduce the number of pier bases used;

[0024] (6) The cross beam and the anti-seepage cloth adopt an installation and fixation method of matching hooks with hanging holes, which has higher installation efficiency and reliable fixation. Description of the Drawings

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the specification. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0026] Figure 1 It is the front view of the cofferdam in the background art of the present invention;

[0027] Figure 2 It is the top view of the cofferdam in the background art of the present invention;

[0028] Figure 3 It is the front view of the pier base in the present invention;

[0029] Figure 4 It is the side view of the pier base in the present invention;

[0030] Figure 5 It is the top view of the pier base in the present invention;

[0031] Figure 6 It is the front view of the cross beam in the present invention;

[0032] Figure 7 It is the top view of the cross beam in the present invention;

[0033] Figure 8 It is the top view of the anti-seepage cloth in the present invention.

[0034] In the figure: 1, pier base; 11, installation groove; 2, cross beam; 21, hook; 3, anti-seepage cloth; 31, hanging hole. Detailed Embodiments

[0035] Combined with the accompanying drawings in the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. For ease of description, the terms "vertical", "horizontal", "left", "right", "upper", "lower", "inner", "outer", "bottom", etc. used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present application.

[0036] Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present utility model.

[0037] As shown in the attached Figure 3-5 figure, the pier 1 of the anti-pollution cofferdam for downhole operation sites is integrally in a frustum-shaped block structure, with its top and bottom surfaces both being squares and the sides being isosceles trapezoids, and it is made of concrete as a whole. In this embodiment, the height of the pier is 300 mm, the side length of the bottom square is 400 mm, and the side length of the top square is 200 mm.

[0038] An installation groove 11 formed by downward depression is provided on the top surface of the pier 1. The installation groove 11 is in a cross shape and is used for plug-in cooperation with the cross beam 2. In this embodiment, the depth of the installation groove 11 is 60 mm and the width is 30 mm.

[0039] As shown in the attached Figure 6-7 figure, the cross beam 2 of the anti-pollution cofferdam is in a long strip structure and is made of stainless steel material. The shape and size of its cross section are both adapted to the installation groove 11. The cross beam 2 has various length specifications to meet the flexible use on site. In this embodiment, the cross beam 2 is a square stainless steel bar, with a width of 28 mm, a wall thickness of 1.2 mm, and different specifications of lengths of 1000 mm, 2000 mm, and 3000 mm.

[0040] A hook 21 for fixing the anti-seepage cloth 3 is provided on the top of the cross beam 2. The hook 21 is in a vertically arranged cylindrical structure and is evenly arranged at intervals of 1000 mm on the top of the cross beam 2. The diameter of the hook 21 is 8 mm and the height is 14 mm, and it is vertically welded to the top of the cross beam 2.

[0041] As shown in the attached Figure 8 figure, the shape and size of the anti-seepage cloth 3 of the anti-pollution cofferdam are adapted to the shape and size of the required cofferdam. Circular hanging holes 31 are equidistantly arranged at the edge of the anti-seepage cloth 3, and the hanging holes 31 cooperate with the hooks 21 on the cross beam 2, thereby fixing the anti-seepage cloth 3 to the cross beam 2.

[0042] In this embodiment, the anti-seepage cloth 3 has a thickness of 0.8 mm and is made of high-density polyethylene material in the prior art. Its overall size is a rectangle of 12 m × 10 m, and hanging holes 31 with a diameter of 10 mm are arranged at intervals of 1 m on its four sides.

[0043] The implementation principle of the above embodiment is as follows:

[0044] When it is necessary to build an anti-pollution cofferdam for the underground operation site, first, place the required number of base piers 1 at the corresponding positions on the building site according to the shape and size of the anti-pollution cofferdam, and the number of required base piers 1 can be determined according to the length of the cross beam 2 used. The longer the length of the cross beam 2 used, the fewer the number of required base piers 1. After the base piers 1 are placed, insert the cross beam 2 into the installation groove 11 at the top of the base pier 1. Specifically, at the straight edge position of the cofferdam, the cross beam 2 is completely inserted into the groove in one length direction of the cruciform installation groove 11; at the corner position of the cofferdam, two cross beams 2 are respectively inserted into the grooves in two length directions of the cruciform installation groove 11. After all the cross beams 2 are inserted into the installation grooves 11 on the corresponding base piers 1, the overall skeleton structure of the cofferdam is built. After the anti-seepage cloth 3 is unfolded, hang the hanging holes 31 on the hooks 21 correspondingly, and the assembly and construction of the anti-pollution cofferdam are completed. After use, remove the anti-seepage cloth 3 from the hooks 21, fold it up and recycle it, recycle the base piers 1 in turn and place them in a special box (stackable), disassemble the cross beams 2 and bundle them for recycling, thereby greatly reducing the space required for storage and transportation.

[0045] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be construed as including the preferred embodiments and all changes and modifications falling within the scope of the present invention. Obviously, those skilled in the art can make various changes and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. An anti-pollution cofferdam for downhole operation site, including an anti-seepage cloth (3), characterized in that, It also includes pier bases (1) and cross beams (2). A plurality of the pier bases (1) are arranged according to the shape and size of the required cofferdam. A plurality of the cross beams (2) are fixed on the pier bases (1) to form the framework of the cofferdam. The shape and size of the anti-seepage cloth (3) are adapted to the shape and size of the required cofferdam. The anti-seepage cloth (3) is fixed on the cross beam (2).

2. The anti-pollution cofferdam for downhole operation site according to claim 1, wherein, The cross beam (2) and the pier base (1) are fixed by means of plug-in fit.

3. The anti-pollution cofferdam for downhole operation site according to claim 2, wherein, An installation groove (11) is formed at the top of the pier base (1). The cross beam (2) is in plug-in fit with the installation groove (11).

4. The anti-pollution cofferdam for downhole operation site according to claim 3, characterized in that, The installation groove (11) is formed by being recessed downward on the top surface of the pier base (1).

5. The anti-pollution cofferdam for downhole operation site according to claim 3, characterized in that, The installation groove (11) is cross-shaped.

6. The anti-pollution cofferdam for downhole operation site according to claim 1, characterized in that The pier base (1) is made of concrete material.

7. The anti-pollution cofferdam for downhole operation site according to claim 1, characterized in that, The cross beam (2) is made of stainless steel material.

8. The anti-pollution cofferdam for downhole operation site according to claim 1, wherein, The cross beam (2) has multiple length specifications.

9. The anti-pollution cofferdam for downhole operation site according to claim 1, wherein Hooks (21) for fixing the anti-seepage cloth (3) are arranged on the cross beam (2).

10. The anti-pollution cofferdam for downhole operation site according to claim 9, characterized in that, Hanging holes (31) are arranged at the edge of the anti-seepage cloth (3).

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