Multifunctional double-cylinder wellhead protector

Abstract

The multifunctional double-cylinder wellhead protector comprises a base, hydraulic cylinders are installed on the outer walls of the two sides of the top of the base through bolts, a first connecting base is installed between the output ends of the two hydraulic cylinders through bolts, a mounting base is connected to the bottom of the first connecting base in an inserted mode, and a center pipe is connected to the bottom end of the mounting base in a threaded mode; a first valve is mounted at the center of the top of the base through bolts, a connecting pipe is mounted at the bottom end of the first valve through bolts, and the bottom end of the connecting pipe is fixedly connected with the top end of the mounting seat through bolts. The protector designed by the utility model is suitable for the construction flow of a fracture-resistant acidizing process in the Middle East country, the central pipe can be replaced according to the actual use specification condition, meanwhile, the protector is reliable and firm in overall structure, the central pipe can resist high-pressure operation, the problem that an existing protector is suitable for single oil pipe construction is solved, and the service life of the protector is prolonged. Meanwhile, the protector conforms to the construction process of the fracture acidizing process in the Middle East country, and has the advantages of simplicity, convenience and rapidness in operation.

Description

Technical Field

[0001] The utility model relates to the technical field of oilfield drilling equipment, in particular to a multifunctional double-cylinder wellhead protector. Background Art

[0002] With the full launch of reservoir transformation work, how to reduce the safety risks of wellhead construction personnel and improve operating efficiency has become a difficult problem that must be solved in this work. The "wellhead protector" came into being and became the safety "guardian" of oil trees, ground equipment, and wellhead personnel.

[0003] For example, a multifunctional wellhead protector with application number CN201320858097.0 and authorization announcement date 20140924 belongs to the wellhead blowout prevention sealing device of the oil field pumping unit. The root box blowout prevention pressure cap is threadedly connected with the ball-type packing box, the ball-type packing box is rotatably connected with the eccentric guide tube ball seat, the upper ball pressure cap is threadedly connected with the eccentric guide tube ball seat, the eccentric guide tube ball seat is plugged with the lower ball seat, the lower ball seat is rotatably connected with the ball connection, the lower ball seat is threadedly connected with the lower ball pressure cap, the blowout prevention ball is located in the blowout prevention pressure cap of the packing box, there is a spring between the blowout prevention ball and the blowout prevention ball pressure cap, there is an O-ring between the blowout prevention ball pressure cap and the blowout prevention pressure cap of the packing box, there is a rubber packing in the ball-type packing box, and the packing pressure cap is pressed on the rubber packing. The advantages of the utility model are: novel structure, more accurate vertical line between the light rod and the wellhead, uniform force, no environmental pollution, increased production and energy saving, and improved work efficiency.

[0004] At present, domestic wellhead protectors are relatively simple and do not have a safety solution for the fracturing acidizing process construction process in the Middle East. Therefore, it is urgent to design a multifunctional dual-cylinder wellhead protector to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a multifunctional double-cylinder wellhead protector to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A multifunctional double-cylinder wellhead protector comprises a base, hydraulic cylinders are installed on the outer walls on both sides of the top of the base by bolts, and a connecting seat 1 is installed between the output ends of the two hydraulic cylinders by bolts, a mounting seat is inserted at the bottom of the connecting seat 1, and a center pipe is threadedly connected to the bottom end of the mounting seat, a valve 1 is installed at the center of the top of the base by bolts, and a connecting pipe is installed at the bottom end of the valve 1 by bolts, and the bottom end of the connecting pipe is fixedly connected to the top of the mounting seat by bolts.

[0008] Furthermore, a valve 2 is installed on the top of the valve 1 through bolts, and a valve assembly is installed on the top of the valve 2 through bolts.

[0009] Furthermore, the valve assembly includes a fixed flange, and the bottom end of the fixed flange is mounted on the top end of the valve by bolts.

[0010] Furthermore, a fixing seat is integrally formed at the top of the fixing flange, and a cylinder body is mounted on the top of the fixing seat by bolts.

[0011] Furthermore, a plurality of connecting seats 2 are installed on the outside of the top of the cylinder body by bolts, and a top seat is installed on the top of the cylinder body by bolts.

[0012] In the above technical scheme, the multifunctional double-cylinder wellhead protector provided by the utility model has the following beneficial effects:

[0013] (1) The protector designed by the utility model is suitable for the construction process of fracturing acidizing process in Middle Eastern countries, and the central tube can be replaced according to the actual use specifications. At the same time, the overall structure of the protector is reliable and firm, and the central tube can withstand high-pressure operation.

[0014] (2) The utility model solves the problem that the current protector is only applicable to the construction of a single oil pipe. At the same time, the protector complies with the construction process of the fracturing acidizing process in Middle Eastern countries and has the advantages of being simple, convenient and fast to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0016] Figure 1 The present invention provides a schematic diagram of the overall structure of a multifunctional double-cylinder wellhead protector embodiment of the present invention.

[0017] Figure 2 A schematic diagram of the valve assembly structure provided for an embodiment of the multifunctional double-cylinder wellhead protector of the utility model.

[0018] Description of reference numerals:

[0019] 1. Base; 2. Hydraulic cylinder; 3. Connecting seat 1; 4. Mounting seat; 5. Connecting pipe; 6. Valve 1; 7. Valve 2; 8. Valve assembly; 9. Center pipe; 10. Fixed flange; 11. Fixed seat; 12. Connecting seat 2; 13. Top seat; 14. Cylinder body. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] like Figure 1-2 As shown, the multifunctional double-cylinder wellhead protector provided by the embodiment of the utility model comprises a base 1, hydraulic cylinders 2 are installed on the outer walls on both sides of the top of the base 1 by bolts, and a connecting seat 3 is installed between the output ends of the two hydraulic cylinders 2 by bolts, a mounting seat 4 is plugged into the bottom of the connecting seat 3, and a center pipe 9 is threadedly connected to the bottom end of the mounting seat 4, a valve 6 is installed at the center of the top of the base 1 by bolts, and a connecting pipe 5 is installed at the bottom end of the valve 6 by bolts, and the bottom end of the connecting pipe 5 is fixedly connected to the top of the mounting seat 4 by bolts.

[0022] Specifically, in this embodiment, a base 1 is included, hydraulic cylinders 2 are installed on the outer walls of both sides of the top of the base 1 by bolts, and a connecting seat 3 is installed between the output ends of the two hydraulic cylinders 2 by bolts, a mounting seat 4 is inserted at the bottom of the connecting seat 3, and a center pipe 9 is threadedly connected to the bottom end of the mounting seat 4, and the center pipe 9 has oil pipes of several specifications such as 27 / 8", 3.5", 4.5", 5.5" and 7", a valve 6 is installed at the center of the top of the base 1 by bolts, the valve 6 is a hydraulic gate valve, and a connecting pipe 5 is installed at the bottom of the valve 6 by bolts, the connecting pipe 5 and the connecting seat 1 constitute a fracturing head, and the bottom end of the connecting pipe 5 is fixedly connected to the top of the mounting seat 4 by bolts.

[0023] The utility model provides a multifunctional double-cylinder wellhead protector. The protector designed by the utility model is suitable for the fracturing acidizing process construction process in Middle Eastern countries, and the center tube can be replaced according to actual use specifications. At the same time, the overall structure of the protector is reliable and firm, and the center tube can withstand high-pressure operations.

[0024] In one embodiment provided by the present utility model, Figure 1 As shown, a valve 2 7 is installed on the top of the valve 1 6 via bolts. The valve 2 7 is a manual gate valve, and a valve assembly 8 is installed on the top of the valve 2 7 via bolts.

[0025] In another embodiment provided by the present utility model, Figure 2 As shown, the valve assembly 8 includes a fixed flange 10, the bottom end of the fixed flange 10 is installed on the top of the valve 2 7 by bolts, the top of the fixed flange 10 is integrally formed with a fixed seat 11, the top of the fixed seat 11 is installed with a cylinder body 14 by bolts, a plurality of connecting seats 2 12 are installed on the outside of the top of the cylinder body 14 by bolts, and a top seat 13 is installed on the top of the cylinder body 14 by bolts, and the top seat 13, the connecting seat 2 12, the cylinder body 14, the fixed seat 11 and the fixed flange can constitute a flange fixing bracket.

[0026] Example 1

[0027] A multifunctional double-cylinder wellhead protector comprises a base 1, hydraulic cylinders 2 are installed on the outer walls of both sides of the top of the base 1 by bolts, and a connecting seat 3 is installed between the output ends of the two hydraulic cylinders 2 by bolts, a mounting seat 4 is inserted at the bottom of the connecting seat 3, and a center pipe 9 is threadedly connected to the bottom end of the mounting seat 4, and the center pipe 9 has oil pipes of several specifications such as 27 / 8", 3.5", 4.5", 5.5" and 7", a valve 6 is installed at the center of the top of the base 1 by bolts, the valve 6 is a hydraulic gate valve, and a connecting pipe 5 is installed at the bottom of the valve 6 by bolts, the connecting pipe 5 and the connecting seat 1 constitute a fracturing head, and the bottom end of the connecting pipe 5 is fixedly connected to the top of the mounting seat 4 by bolts.

[0028] Example 2

[0029] This embodiment is further limited on the basis of the embodiment 1, wherein a valve 2 7 is installed on the top of the valve 1 6 by bolts, the valve 2 7 is a manual gate valve, and a valve assembly 8 is installed on the top of the valve 2 7 by bolts; the valve assembly 8 includes a fixed flange 10, the bottom end of the fixed flange 10 is installed on the top of the valve 2 7 by bolts, a fixed seat 11 is integrally formed on the top of the fixed flange 10, a cylinder body 14 is installed on the top of the fixed seat 11 by bolts, a plurality of connecting seats 2 12 are installed on the outside of the top of the cylinder body 14 by bolts, a top seat 13 is installed on the top of the cylinder body 14 by bolts, and the top seat 13, the connecting seat 2 12, the cylinder body 14, the fixed seat 11 and the fixed flange can constitute a flange fixing bracket.

[0030] Working principle: When in use, the two hydraulic cylinders 2 can be operated to start, so that the connecting seat 3 moves with the central tube 9, and the central tube 9 is inserted into the wellhead to protect the wellhead, and the protector can be installed on wellheads of different specifications by replacing central tubes 9 of different specifications.

[0031] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A multifunctional double-cylinder wellhead protector, comprising a base (1), characterized in that: Hydraulic cylinders (2) are installed on the outer walls of both sides of the top of the base (1) by bolts, and a connecting seat (3) is installed between the output ends of the two hydraulic cylinders (2) by bolts, a mounting seat (4) is inserted at the bottom of the connecting seat (3), and a center pipe (9) is threadedly connected to the bottom end of the mounting seat (4), a valve (6) is installed at the center of the top of the base (1) by bolts, and a connecting pipe (5) is installed at the bottom end of the valve (6) by bolts, the bottom end of the connecting pipe (5) is fixedly connected to the top of the mounting seat (4) by bolts, and the top of the valve (6) is connected to the top of the mounting seat (4). A valve (7) is installed by bolts, and a valve assembly (8) is installed on the top of the valve (7) by bolts, the valve assembly (8) comprises a fixing flange (10), the bottom end of the fixing flange (10) is installed on the top of the valve (7) by bolts, a fixing seat (11) is integrally formed on the top of the fixing flange (10), a cylinder body (14) is installed on the top of the fixing seat (11) by bolts, a plurality of connecting seats (12) are installed on the outside of the top of the cylinder body (14) by bolts, and a top seat (13) is installed on the top of the cylinder body (14) by bolts.

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