Well drilling four-way joint additionally provided with sealing structure

Abstract

The utility model relates to the technical field of four-way casing pipes, and particularly discloses a well drilling four-way joint with a sealing structure, which comprises a four-way joint body, two vertical joints are arranged at the upper end and the lower end of the four-way joint body, transverse joints are arranged at the left end and the right end of the four-way joint body, and a threaded cylinder is in threaded connection with the outer ends of the vertical joints and is screwed tightly, so that the sealing structure is formed. The outer end opening of the threaded cylinder abuts against the first outer sealing ring, the vertical connecting pipe abuts against the first inner sealing ring, one second outer sealing ring abuts against the outer end opening of the vertical connecting pipe, the other second outer sealing ring abuts against the side wall of the inner end of the threaded cylinder, the vertical connecting pipe and the vertical connector are connected in a sealed mode, and the butt joint cylinder is connected to the outer end of the transverse connector in a sleeving mode. The transverse connecting pipe is fixed through the split bolt, the outer end opening of the transverse connecting pipe abuts against the second inner sealing ring, the third outer baffle ring abuts against the sealing ring, the transverse connecting pipe and the transverse connector are connected in a sealed mode, and the multiple sealing structures can enable the four-way joint and the oil extraction pipeline to be connected in a sealed mode more stably.

Description

TECHNICAL FIELD

[0001] The utility model relates to four -way bushing technical field, concretely is a kind of drilling four -way of increasing sealing structure. BACKGROUND

[0002] In oil production operation, casing four -way is as the main component of tubing and casing convergence, diversion, plays a key role to the structural stability of the entire oil production device, lower connection tubing hanger, the role of sealing oil casing annular space.

[0003] Chinese patent CN209942757U discloses a four-way casing sealing structure applied to oil well, which comprises a first casing, a second casing is sleeved on the first casing, a groove is formed in the inner wall of the second casing, and the groove and the outer wall of the first casing form a sealing space; a sealing ring assembly is sleeved on the first casing and located in the sealing space, the sealing ring assembly comprises a first sealing ring and a second sealing ring, the inner wall of the first sealing ring is detachably connected to the outer wall of the second sealing ring, a height adjusting component is sleeved on the first casing, the top of the height adjusting component supports the sealing ring assembly, and the sealing ring assembly moves in the sealing space under the drive of the height adjusting component.

[0004] However, the installation strength of the sealing ring at the connection is often affected by the scouring of the pipeline over the years, and the above device lacks effective reinforcement capability for the sealing ring, which easily affects the service life of the overall pipeline during use. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a drilling four -way of increasing sealing structure to solve the problems raised in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme: a drilling four -way of increasing sealing structure, comprising: four -way body, two vertical joints are arranged at the upper and lower ends of the four -way body, horizontal joints are arranged at the left and right ends of the four -way body, a threaded groove is formed in the outer end of each vertical joint, an outer retaining ring one is fixedly installed at the outer end of the vertical joint, an inner retaining ring one is fixedly installed at the inner side, and a threaded cylinder is threadedly connected to the outer end of the vertical joint.

[0007] An inner retaining ring two is fixedly installed at the inner end of each horizontal joint, an inner sealing ring two is fixedly installed at the outer end of the inner retaining ring two, a sealing ring is fixedly installed at the outer end of the horizontal joint, a butt joint cylinder is sleeved on the outer end of the horizontal joint, and the two butt joint cylinders are connected by a tension bolt.

[0008] Preferably, an outer sealing ring one is sleeved on the outer end of the outer retaining ring one, and an inner sealing ring one is installed on the outer side of the inner retaining ring one.

[0009] Preferably, the inner end of the threaded cylinder is slidingly connected with a vertical connecting pipe, and the outer end of the vertical connecting pipe is fixedly provided with an outer blocking ring two, and the front and rear sides of the outer blocking ring two are fixedly sleeved with outer sealing rings two.

[0010] Preferably, the outer end of the threaded cylinder is fixedly provided with a driving block, the inner wall of the threaded cylinder is threadedly connected with the outer end of the vertical joint through a threaded groove, meanwhile, the outer end of the threaded cylinder is abutted with the outer sealing ring one, the vertical connecting pipe is abutted with the inner sealing ring one, one of the outer sealing rings two is abutted with the outer end of the vertical connecting pipe, and the other outer sealing ring two is abutted with the inner end side wall of the threaded cylinder.

[0011] Preferably, the inner end of the butt joint cylinder is slidingly connected with a horizontal connecting pipe, and the outer end of the horizontal connecting pipe is fixedly provided with an outer blocking ring three.

[0012] Preferably, the outer end of the butt joint cylinder is fixedly provided with an ear plate, and a pull bolt is sequentially threaded through the perforations on the two ear plates and is threadedly connected with a nut, at this time, the outer end of the horizontal connecting pipe is abutted with the inner sealing ring two, and the outer blocking ring three is abutted with the sealing ring.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] By threadedly connecting the threaded cylinder with the outer end of the vertical joint, screwing the threaded cylinder, abutting the outer end of the threaded cylinder with the outer sealing ring one, abutting the vertical connecting pipe with the inner sealing ring one, abutting one of the outer sealing rings two with the outer end of the vertical connecting pipe and the other outer sealing ring two with the inner end side wall of the threaded cylinder, sealingly connecting the vertical connecting pipe with the vertical joint, sleeving the butt joint cylinder with the outer end of the horizontal joint, and fixing through the pull bolt, abutting the outer end of the horizontal connecting pipe with the inner sealing ring two, abutting the outer blocking ring three with the sealing ring, and sealingly connecting the horizontal connecting pipe with the horizontal joint, the multiple sealing structures can more stably seal and connect the four-way joint and the oil extraction pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole structure schematic view of the utility model;

[0016] Figure 2 It is an expanded schematic view of the vertical connecting pipe of the utility model;

[0017] Figure 3 It is an expanded schematic view of the horizontal connecting pipe of the utility model;

[0018] Figure 4 It is a whole structure cross section schematic view of the utility model.

[0019] In the figure: 101, four-way body; 1, vertical joint; 2, horizontal joint; 3, threaded groove; 4, outer baffle ring one; 5, outer sealing ring one; 6, inner baffle ring one; 7, inner sealing ring one; 8, threaded cylinder; 9, driving block; 10, vertical connecting pipe; 11, outer baffle ring two; 12, outer sealing ring two; 13, inner baffle ring two; 14, inner sealing ring two; 15, sealing ring; 16, butt joint cylinder; 17, ear plate; 18, horizontal connecting pipe; 19, outer baffle ring three; 20, pull bolt. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme of the utility model carry on clear, complete description, and the advantage is more clear and distinct, the following combining with the figure to the utility model embodiment carries on further detailed explanation. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all embodiments, only to explain the embodiments of the utility model, and not for limiting the embodiments of the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor are within the scope of the utility model protection.

[0021] Please refer to Figures 1-4 The utility model provides a kind of technical scheme: a kind of drilling four-way of increasing sealing structure, comprising: four-way body 101, four-way body 101 is used to connect the connection of oil production pipeline, the upper and lower ends of four-way body 101 are provided with two vertical joints 1, two vertical joints 1 are on the same axis and are interconnected, the left and right ends of four-way body 101 are provided with horizontal joint 2, two horizontal joints 2 are on the same axis and are interconnected, the outer end of each vertical joint 1 is provided with threaded groove 3, the outer end of vertical joint 1 is fixedly installed with outer baffle ring one 4, the outer end of outer baffle ring one 4 is sleeved with outer sealing ring one 5, and inner side is fixedly installed with inner baffle ring one 6, the outer side of inner baffle ring one 6 is installed with inner sealing ring one 7, the outer end of vertical joint 1 is threadedly connected with threaded cylinder 8, the inner end of threaded cylinder 8 is slidably connected with vertical connecting pipe 10, the diameter of vertical connecting pipe 10 is less than the inner diameter of vertical joint 1, the wall thickness of vertical connecting pipe 10 is less than the wall thickness of inner baffle ring one 6, one end of vertical connecting pipe 10 is fixedly installed with outer baffle ring two 11 outside, outer baffle ring two 11 is fixedly sleeved with outer sealing ring two 12 on the front and back sides, the diameter of outer baffle ring two 11 is same with the diameter of vertical joint 1, vertical connecting pipe 10 can be inserted into vertical joint 1, and vertical connecting pipe 10 and inner baffle ring one 6 contact, and outer baffle ring two 11 and the outer end of vertical joint 1 contact.

[0022] The outer end of the threaded cylinder 8 is fixedly installed with a driving block 9, the driving block 9 is in the shape of an equilateral hexagon, facilitating connection with a hexagonal wrench, driving the threaded cylinder 8 to rotate, the inner wall of the threaded cylinder 8 is threadedly connected to the outer end of the vertical joint 1 through the thread groove 3, at the same time, the outer end of the threaded cylinder 8 is in contact with the outer sealing ring one 5, the vertical connecting pipe 10 is in contact with the inner sealing ring one 7, one of the outer sealing ring two 12 is in contact with the outer end of the vertical connecting pipe 10, and the other outer sealing ring two 12 is in contact with the inner end side wall of the threaded cylinder 8, thereby sealingly connecting the vertical connecting pipe 10 and the vertical joint 1, and through the triple sealing structure, the sealing effect of the vertical connecting pipe 10 and the vertical joint 1 is increased.

[0023] The inner end of each horizontal joint 2 is fixedly installed with an inner blocking ring two 13, the outer end of the inner blocking ring two 13 is fixedly installed with an inner sealing ring two 14, the outer end of the horizontal joint 2 is fixedly installed with a sealing ring 15, the outer end of the horizontal joint 2 is sleeved with a butt joint cylinder 16, the inner diameter of the butt joint cylinder 16 is larger than the diameter of the horizontal joint 2, the inner end of the butt joint cylinder 16 is slidably connected with a horizontal connecting pipe 18, the diameter of the horizontal connecting pipe 18 is smaller than the inner diameter of the horizontal joint 2, the outer end of the horizontal connecting pipe 18 is fixedly installed with an outer blocking ring three 19, the diameter of the outer blocking ring three 19 is the same as the diameter of the horizontal joint 2, the outer end of the left and right ends of the butt joint cylinder 16 is fixedly installed with an ear plate 17, and the two butt joint cylinders 16 are connected through a tension bolt 20, the tension bolt 20 is sequentially threaded through the perforations on the two ear plates 17 and is threadedly connected with a nut, at this time, the outer end of the horizontal connecting pipe 18 is in contact with the inner sealing ring two 14, and the outer blocking ring three 19 is in contact with the sealing ring 15, thereby sealingly connecting the horizontal connecting pipe 18 and the horizontal joint 2, and the double sealing structure increases the sealing effect of the horizontal connecting pipe 18 and the horizontal joint 2.

[0024] In actual use, the threaded cylinder 8 is threadedly connected to the outer end of the vertical joint 1, the threaded cylinder 8 is screwed tightly, the outer end of the threaded cylinder 8 is in contact with the outer sealing ring one 5, the vertical connecting pipe 10 is in contact with the inner sealing ring one 7, one of the outer sealing ring two 12 is in contact with the outer end of the vertical connecting pipe 10, and the other outer sealing ring two 12 is in contact with the inner end side wall of the threaded cylinder 8, thereby sealingly connecting the vertical connecting pipe 10 and the vertical joint 1, the butt joint cylinder 16 is sleeved on the outer end of the horizontal joint 2 and is fixed through the tension bolt 20, the outer end of the horizontal connecting pipe 18 is in contact with the inner sealing ring two 14, and the outer blocking ring three 19 is in contact with the sealing ring 15, thereby sealingly connecting the horizontal connecting pipe 18 and the horizontal joint 2, and the multiple sealing structures can more stably sealingly connect the four-way joint and the oil extraction pipeline.

[0025] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A well drilling cross over having an increased seal comprising: The utility model provides a four -way body (101), two vertical joints (1) are arranged in the upper and lower end of four -way body (101), and the left and right ends of four -way body (101) are provided with horizontal joint (2), it is characterized in that: the outer end of each vertical joint (1) is provided with threaded groove (3), the outer end of vertical joint (1) is fixedly installed with outer baffle ring no. The inner end of each horizontal joint (2) is fixedly installed with inner baffle ring no.

2. A well drilling cross according to claim 1, characterized in that: The outer end of outer baffle ring no.

3. A well drilling cross according to claim 1, characterized in that: The inner end of threaded cylinder (8) is slidably connected with vertical connecting pipe (10), and the outer end of vertical connecting pipe (10) is fixedly installed with outer baffle ring no.

4. A well drilling cross according to claim 3, characterized in that: The outer end of threaded cylinder (8) is fixedly installed with driving block (9), the inner wall of threaded cylinder (8) is screwed in the outer end of vertical joint (1) through threaded groove (3), meanwhile, the outer end of threaded cylinder (8) is in contact with outer baffle ring no.

5. A well drilling cross according to claim 1, wherein: The outer end of horizontal connecting pipe (18) is fixedly installed with outer baffle ring no.

6. A well drilling cross according to claim 5, characterized in that: The outer end of butt joint cylinder (16) is fixedly installed with lug plate (17), and the through hole in the lug plate (17) is threaded with nut after being threaded by pull bolt (20) in sequence, at this time, the outer end of horizontal connecting pipe (18) is in contact with inner baffle ring no. The outer end of butt joint cylinder (16) is fixedly installed with lug plate (17), and the through hole in the lug plate (17) is threaded with nut after being threaded by pull bolt (20) in sequence, at this time, the outer end of horizontal connecting pipe (18) is in contact with inner baffle ring no.

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