Reducing type tubing nipple of producing well

Abstract

The utility model provides a producing well variable-diameter tubing nipple, which relates to the technical field of tubing nipples, and comprises a large-diameter tube body and a small-diameter tube body, a built-in tube body is arranged in one end of the small-diameter tube body, the built-in tube body is mounted in the small-diameter tube body through a first clamping piece, and semicircular arc plates are symmetrically arranged in one end of the built-in tube body. One end of the semi-arc plate extends out of the interior of one end of the built-in pipe body, the outer wall of the semi-arc plate is provided with an external thread half thread, and the second clamping piece penetrates out of the through hole and then is detachably connected with the counter bore; according to the built-in pipe, the semicircular plates are symmetrically arranged in one end of the built-in pipe body, and the second clamping piece is arranged on the built-in pipe outer ring sleeve on the outer wall of the built-in pipe body and penetrates through the through hole in the built-in pipe body to be detachably connected with the counter bores in the semicircular plates; and the semicircular arc plates with different diameters can be replaced to be assembled with the built-in pipe body, so that the two semicircular arc plates with different diameters are connected with the oil pipes with different diameters.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil pipe nipple technical field especially relates to a variable diameter oil pipe nipple of oil production well. BACKGROUND

[0002] Oil well is the hole eye that is drilled through drilling method. Generally, after oil well drills oil layer, the oil layer casing is lowered, and the annular space between casing and well wall is injected with oil well cement to maintain well wall and close oil, gas, water layer, and then according to the requirement of oilfield development, oil layer is shot open by perforating gun, forms passageway, and oil pipe is lowered, and by suitable induced flow method, oil is lifted from oil well bottom to well head.

[0003] Nipple is a kind of accessory commonly used in industrial pipeline connection. Commonly seen have threaded nipple, divided into double-end external thread, single-end external thread, flat-end external thread several, in addition, there are nipple connected with flange etc., and oil pipe nipple is a section of short oil pipe, and compared with oil pipe, only length is different, other is same.

[0004] But the common oil pipe nipple still has certain deficiency in the process of using, first, the common oil pipe nipple is difficult to change diameter, is difficult to meet the use demand of different models of oil pipe. Therefore, the utility model provides a variable diameter oil pipe nipple of oil production well to solve the deficiency in the prior art. UTILITY MODEL CONTENT

[0005] In view of the above problem, the utility model aims at providing a variable diameter oil pipe nipple of oil production well, by first clamping piece installation one built-in pipe body in small-diameter pipe body inside, then the built-in pipe body one end inside symmetry sets up semicircular plate, sets up external thread half thread on the semicircular plate outer wall and sets up second clamping piece on the built-in pipe outer ring cover and passes through the hole on the built-in pipe body and is detachably connected with the counterbore on the semicircular plate, can realize the replacement of different diameter semicircular plate and built-in pipe body assembly, to realize the connection of different diameter oil pipe by two semicircular plates of different diameter.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] The application discloses a variable-diameter tubing nipple for an oil production well, which comprises a large-diameter pipe body and a small-diameter pipe body, one end of the large-diameter pipe body is connected with the small-diameter pipe body, a first external thread is arranged on the outer wall of one end of the large-diameter pipe body away from the small-diameter pipe body, a small-diameter pipe outer ring sleeve is arranged on the outer wall of the small-diameter pipe body, a first clamping piece is arranged on the small-diameter pipe outer ring sleeve, an inner pipe body is arranged in one end of the small-diameter pipe body, the inner pipe body is mounted in the small-diameter pipe body through the first clamping piece, an inner pipe outer ring sleeve is arranged on the outer side of the inner pipe body, one side wall of the inner pipe outer ring sleeve is mounted with one side wall of the small-diameter pipe outer ring sleeve through symmetrically arranged connecting rods, a second clamping piece is arranged on the inner pipe outer ring sleeve, symmetrically arranged semicircular arc plates are arranged in one end of the inner pipe body, an external thread half screw is arranged on the outer wall of one end of the semicircular arc plate extending out of the inner pipe body, the external thread half screws on the two semicircular arc plates are combined to form a second external thread, symmetrically arranged through holes are arranged on the outer wall of one end of the inner pipe body close to the semicircular arc plates, the semicircular arc plates are provided with counterbores matched with the positions of the through holes, and the second clamping piece is detachably connected with the counterbores after penetrating out of the through holes.

[0008] Further improvement lies in that the first clamping piece comprises a first clamping driving screw, a first sleeve and an arc-shaped clamping plate, the first clamping driving screw is symmetrically and rotatably arranged on the outer wall of the small-diameter pipe outer ring sleeve, the small-diameter pipe outer ring sleeve is symmetrically provided with first sliding holes, the first sleeve is slidably arranged in the first sliding holes, and the first sleeve is in threaded connection with the first clamping driving screw.

[0009] Further improvement lies in that the second clamping piece comprises a second clamping driving screw and a second sleeve, the second clamping driving screw is symmetrically and rotatably arranged on the outer wall of the inner pipe outer ring sleeve, the inner pipe outer ring sleeve is symmetrically provided with second sliding holes, the second sleeve is slidably arranged in the second sliding holes, and the second sleeve is in threaded connection with the second clamping driving screw.

[0010] Further improvement lies in that the second sleeve is provided with a first magnetic plate, a second magnetic plate is arranged in the counterbores, and the semicircular arc plates are detachably connected with the second sleeve after being magnetically fixed through the first magnetic plate and the second magnetic plate.

[0011] Further improvement lies in that a protective sleeve is arranged on the outer side of the large-diameter pipe body, a ring plate is arranged at one end of the protective sleeve, symmetrically arranged moving blocks are arranged on the inner side of the ring plate, symmetrically arranged moving grooves are arranged on the outer wall of the large-diameter pipe body, and the moving blocks are in sliding connection with the moving grooves.

[0012] Further improvement lies in that the first clamping piece and the second clamping piece can be covered in the protective sleeve after the protective sleeve moves to one end of the inner pipe body.

[0013] The utility model discloses the beneficial effect is: the utility model discloses a built-in pipe body is installed to the first clamping piece through the small pipe body inside, then the half circular arc plate is set up to the built-in pipe body one end inside symmetry, sets up the external thread half screw on the half circular arc plate outer wall and sets up the second clamping piece through -passing hole on the built-in pipe outer ring cover and is connected with the counterbore on the half circular arc plate after the built-in pipe body through -passing hole, can realize the replacement different diameter size's half circular arc plate and built-in pipe body and assemble, with this realizes using two half circular arc plates of different diameter size to connect with the oil pipe of different diameter, the built-in pipe body and half circular arc plate of the utility model discloses the oil well variable diameter formula oil pipe nipple can realize quick replacement, and the use flexibility, convenience is high. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the utility model structure perspective main view schematic drawing;

[0015] Figure 2 It is the utility model first clamping piece installation structure side view schematic drawing;

[0016] Figure 3 It is the utility model second clamping piece installation structure side view schematic drawing;

[0017] Figure 4 It is the utility model protective sleeve structure perspective schematic drawing;

[0018] Figure 5 It is the utility model built-in pipe outer ring cover and half circular arc plate installation structure schematic drawing;

[0019] Figure 6 It is the utility model protective sleeve installation structure schematic drawing.

[0020] Among them: 1, large pipe body;2, small pipe body;3, first external thread;4, small pipe outer ring cover;5, first clamping piece;501, first clamping drive screw;502, first sleeve;503, arc clamping plate;504, first sliding hole;6, built-in pipe body;7, built-in pipe outer ring cover;8, connecting rod;9, second clamping piece;901, second clamping drive screw;902, second sleeve;903, second sliding hole;904, first magnetic plate;905, second magnetic plate;10, half circular arc plate;11, external thread half screw;12, through -passing hole;13, counterbore;14, protective sleeve;15, ring plate;16, moving block;17, moving groove. DETAILED DESCRIPTION

[0021] In order to deepen the understanding of the utility model, the utility model will be further described in the following embodiment, and the embodiment is only used to explain the utility model, and does not constitute the limitation to the protection scope of the utility model.

[0022] According to Figures 1-6 As shown in the drawings, the embodiment provides a variable diameter tubing spool for oil well, which comprises a large-diameter pipe body 1 and a small-diameter pipe body 2, the small-diameter pipe body 2 is connected to one end of the large-diameter pipe body 1, a first external thread 3 is arranged on the outer wall of one end of the large-diameter pipe body 1 away from the small-diameter pipe body 2, a small-diameter pipe outer ring sleeve 4 is arranged on the outer wall of the small-diameter pipe body 2, a first clamping part 5 is arranged on the small-diameter pipe outer ring sleeve 4, an inner pipe body 6 is arranged in one end of the small-diameter pipe body 2, the inner pipe body 6 is installed in the small-diameter pipe body 2 through the first clamping part 5, an inner pipe outer ring sleeve 7 is arranged on the outer side of the inner pipe body 6, one side wall of the inner pipe outer ring sleeve 7 is installed with the small-diameter pipe outer ring sleeve 4 through the symmetrical connecting rods 8, a second clamping part 9 is arranged on the inner pipe outer ring sleeve 7, the inner pipe body 6 is provided with symmetrical semicircular plates 10 in one end, the semicircular plates 10 are provided with external thread half threads 11 on the outer wall of one end extending out of the inner pipe body 6, the external thread half threads 11 on the two semicircular plates 10 are combined to form a second external thread, the outer wall of one end of the inner pipe body 6 close to the semicircular plates 10 is provided with symmetrical through holes 12, the semicircular plates 10 are provided with counterbores 13 matched with the through holes 12, and the second clamping part 9 is detachably connected with the counterbores 13 after penetrating out of the through holes 12.

[0023] When the variable diameter tubing spool for oil well is used, the inner pipe body 6 with different diameters can be clamped in the small-diameter pipe body 2 through the first clamping part 5, then the two semicircular plates 10 with different diameters can be installed in the inner pipe body 6 through the second clamping part 9, and the two semicircular plates 10 with different diameters can be connected with oil pipes with different diameters for use, and the oil pipes are connected with the external thread half threads 11 on the two semicircular plates 10 (the two external thread half threads 11 are combined to form the second external thread).

[0024] The first clamping part 5 comprises a first clamping drive screw 501, a first sleeve 502 and an arc-shaped clamping plate 503, the first clamping drive screw 501 is symmetrically and rotatably arranged on the outer wall of the small-diameter pipe outer ring 4, the first sliding hole 504 is symmetrically arranged on the small-diameter pipe outer ring 4, the first sleeve 502 is slidably arranged in the first sliding hole 504, the first sleeve 502 is threadedly connected with the first clamping drive screw 501, the arc-shaped clamping plate 503 is symmetrically arranged inside the small-diameter pipe body 2, and one end of the first sleeve 502 is connected with the outer wall of the arc-shaped clamping plate 503. When the first clamping part 5 fixes the built-in pipe body 6 inside the small-diameter pipe body 2, one end of the built-in pipe body 6 is inserted into one end of the small-diameter pipe body 2, the first sleeve 502 is moved in the first sliding hole 504 by rotating the first clamping drive screw 501, and then the arc-shaped clamping plate 503 is driven to approach the outer wall of the built-in pipe body 6, so that the two arc-shaped clamping plates 503 can clamp the built-in pipe body 6.

[0025] The second clamping part 9 comprises a second clamping drive screw 901 and a second sleeve 902, the second clamping drive screw 901 is symmetrically and rotatably arranged on the outer wall of the built-in pipe outer ring 7, the second sliding hole 903 is symmetrically arranged on the built-in pipe outer ring 7, the second sleeve 902 is slidably arranged in the second sliding hole 903, and the second sleeve 902 is threadedly connected with the second clamping drive screw 901. The first magnetic attraction plate 904 is arranged on the second sleeve 902, the second magnetic attraction plate 905 is arranged in the counterbore 13, and the semicircular arc plate 10 is detachably connected with the second sleeve 902 after being magnetically attracted and fixed by the first magnetic attraction plate 904 and the second magnetic attraction plate 905. When the second clamping part 9 is connected with the semicircular arc plate 10, the second sleeve 902 in the second sliding hole 903 is moved by rotating the second clamping drive screw 901, and then the first magnetic attraction plate 904 is magnetically attracted and fixed with the second magnetic attraction plate 905 in the counterbore 13 of the semicircular arc plate 10, so that the two combined semicircular arc plates 10 form a whole circular pipe structure to realize connection with the oil pipe.

[0026] The large-diameter pipe body 1 is sleeved with a protective sleeve 14, one end of the protective sleeve 14 is provided with a ring plate 15, the inner side of the ring plate 15 is symmetrically provided with a moving block 16, the outer wall of the large-diameter pipe body 1 is symmetrically provided with a moving groove 17, and the moving block 16 is slidably connected with the moving groove 17. After the protective sleeve 14 moves towards one end of the built-in pipe body 6, the first clamping part 5 and the second clamping part 9 can be covered inside the protective sleeve 14. By arranging the protective sleeve 14, a protective structure can be formed outside the oil pipe nipple, the first clamping part 5 and the second clamping part 9 are prevented from being exposed, and the safety of the oil pipe nipple can be improved.

[0027] The utility model discloses a built-in pipe body 6 is installed to the first clamping piece 5 through the inside of small diameter pipe body 2, then the half round arc plate 10 is set up to the inside symmetry of built-in pipe body 6 one end, sets up the outer screw half thread 11 on the half round arc plate 10 outer wall and sets up the second clamping piece 9 on built-in pipe outer ring 7 of built-in pipe body 6 outer wall and passes through the hole 12 of built-in pipe body 6 on the through -hole 12 of built-in pipe body 6 and passes through the hole 12 of built-in pipe body 6 and the counterbore 13 on half round arc plate 10 can detachable connection, can realize the replacement of different diameter size's half round arc plate 10 and built-in pipe body 6 and assemble, to realize the use of two half round arc plates 10 of different diameter size to connect with the oil pipe of different diameter with this, the built-in pipe body 6 and half round arc plate 10 of oil production well variable diameter type oil pipe nipple of the utility model can realize quick replacement, and the use flexibility, convenience is high.

[0028] The basic principle, main features and advantages of the utility model are shown and described above. The skilled in the art should understand that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model can have various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A variable diameter tubing spool for an oil well comprising a large diameter tubing body (1) and a small diameter tubing body (2), the small diameter tubing body (2) being connected to one end of the large diameter tubing body (1), characterised in that: The outer wall of one end of the large-diameter pipe body (1) away from the small-diameter pipe body (2) is provided with a first external thread (3), the outer wall of the small-diameter pipe body (2) is provided with a small-diameter pipe outer sleeve (4), the small-diameter pipe outer sleeve (4) is provided with a first clamping part (5), the small-diameter pipe body (2) is internally provided with an inner pipe body (6), the inner pipe body (6) is mounted in the small-diameter pipe body (2) through the first clamping part (5), the outer side of the inner pipe body (6) is provided with an inner pipe outer sleeve (7), one side wall of the inner pipe outer sleeve (7) is mounted with one side wall of the small-diameter pipe outer sleeve (4) through the symmetrically arranged connecting rods (8), the inner pipe outer sleeve (7) is provided with a second clamping part (9), the inner pipe body (6) is symmetrically provided with a semicircular arc plate (10) at one end, the outer wall of one end of the semicircular arc plate (10) extending out of the inner pipe body (6) is provided with an external thread half screw (11), the external thread half screws (11) on the two semicircular arc plates (10) are combined to form a second external thread, the outer wall of one end of the inner pipe body (6) close to the semicircular arc plate (10) is symmetrically provided with a through hole (12), the semicircular arc plate (10) is provided with a counterbore (13) matched with the position of the through hole (12), and the second clamping part (9) is detachably connected with the counterbore (13) after penetrating out of the through hole (12).

2. A variable diameter tubing pup joint for use in a production well as claimed in claim 1 wherein: The first clamping part (5) comprises a first clamping drive screw (501), a first sleeve (502) and an arc-shaped clamping plate (503), the first clamping drive screw (501) is symmetrically and rotatably arranged on the outer wall of the small-diameter pipe outer sleeve (4), the small-diameter pipe outer sleeve (4) is symmetrically provided with a first sliding hole (504), the first sleeve (502) is slidably arranged in the first sliding hole (504), the first sleeve (502) is in threaded connection with the first clamping drive screw (501), and the arc-shaped clamping plate (503) is symmetrically arranged in the small-diameter pipe body (2).

3. The variable diameter tubing pup joint for a production well of claim 1, wherein: The second clamping part (9) comprises a second clamping drive screw (901) and a second sleeve (902), the second clamping drive screw (901) is symmetrically and rotatably arranged on the outer wall of the inner pipe outer sleeve (7), the inner pipe outer sleeve (7) is symmetrically provided with a second sliding hole (903), the second sleeve (902) is slidably arranged in the second sliding hole (903), and the second sleeve (902) is in threaded connection with the second clamping drive screw (901).

4. A variable diameter tubing pup joint for use in a production well as defined in claim 3, characterized in that: The second sleeve (902) is provided with a first magnetic attraction plate (904), a second magnetic attraction plate (905) is arranged in the counterbore (13), and the semicircular arc plate (10) is detachably connected with the second sleeve (902) after being magnetically attracted and fixed through the first magnetic attraction plate (904) and the second magnetic attraction plate (905).

5. The variable diameter tubing pup joint of claim 1, wherein: The large-diameter pipe body (1) is sleeved with a protective sleeve (14) outside, one end of the protective sleeve (14) is provided with a ring plate (15), the inner side of the ring plate (15) is symmetrically provided with a moving block (16), the outer wall of the large-diameter pipe body (1) is symmetrically provided with a moving groove (17), and the moving block (16) and the moving groove (17) are in sliding connection.

6. A variable diameter tubing pup joint for use in a production well as defined in claim 5 wherein: After the protective sleeve (14) moves to the one end of the built-in pipe body (6), the first clamping piece (5) and the second clamping piece (9) can be wrapped inside the protective sleeve (14).

Images