Petroleum building centralizer

Abstract

The utility model discloses a petroleum building centralizer, which belongs to the technical field of centralizers and comprises centralizer main bodies, avoiding grooves are arranged on one side of each centralizer main body, fixing rings fixed on the other centralizer main body are inserted into the middles of the avoiding grooves, and inserting rods penetrate through the middles of the fixing rings. Second springs arranged on the centralizer body are arranged in the middles of the inserting rods in a sleeving mode, and second spring grooves are wound around the surfaces of the inserting rods. When an operator installs a plurality of sets of centralizer bodies, the operator does not need to carry pin shafts any more, the situation that the pin shafts are damaged and deformed after being impacted is avoided, the convenience for the operator to install the centralizer is improved, meanwhile, the rolling balls rotate in the ball grooves and roll on the well wall, and therefore the friction force between the centralizer bodies and the well wall is reduced, and the safety of the centralizer is improved. And the moving stability of the centralizer main body is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of centralizers, in particular to a petroleum construction centralizer. Background Art

[0002] A centralizer generally refers to a guide straightener. A guide straightener refers to a rigid and elastic straightening frame installed on the outer surface of the casing to ensure that the lowered casing string is located in the center of the wellbore during oil and gas drilling. Therefore, it can be seen that the existing centralizers basically meet people's practical needs, but the following problems still exist.

[0003] When an oil well is being exploited, in order to ensure that the pipeline is in the center of the wellbore, the operator may install a centralizer on the surface of the pipeline to support the pipeline through the centralizer to ensure that the pipeline is in the center of the wellbore. When installing the centralizer, the operator may need to place the centralizer around the pipeline first, and then the operator passes the pin through the centralizer and installs the centralizer around the pipeline. Since the general pin is small in size and relatively slender, when the operator carries the pin, it may cause the pin to be squeezed by other objects and bend and deform. For this reason, we propose an oil construction centralizer. Utility Model Content

[0004] The utility model provides a petroleum construction centralizer, which is inserted into an avoidance groove through a fixing ring, and after an insert rod penetrates the fixing ring, the insert rod is inserted into a slot, so that a plurality of centralizer main bodies are connected to each other, so that an operator can use a pin shaft to install a plurality of centralizer main bodies, and it is no longer necessary to carry the pin shaft, so that the pin shaft can be prevented from being damaged and deformed after being hit, thereby improving the convenience of the operator in installing the centralizer.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a petroleum construction centralizer, including a centralizer body, a sidewall groove is provided on one side of the centralizer body, and a fixing ring fixed on another centralizer body is inserted in the middle of the sidewall groove, a plug rod is passed through the middle of the fixing ring, and a second spring provided on the centralizer body is sleeved in the middle of the plug rod, a second spring groove is wound around the surface of the plug rod, and the two side ends of the second spring groove are respectively abutted between the inner wall of the second spring and the surface of a limit block fixed on the plug rod, the end of the plug rod is sleeved with a slot provided on the inner wall of the sidewall groove, and a pull block is fixed to the end of the plug rod away from the plug rod.

[0006] Furthermore, a fixing block is fixed in the middle of the main body of the centralizer, and a plurality of ball grooves are opened in the middle of the fixing block, and rolling balls are embedded in the ball grooves.

[0007] Furthermore, a push rod is fixed on the side wall of the fixed block, and a first spring groove is sleeved on the surface of the push rod. A first spring is arranged inside the first spring groove, and the two side ends of the first spring are respectively abutted between the inner wall of the first spring groove and the surface of the push rod, and a clamp is fixed on the surface of the first spring groove.

[0008] Furthermore, the clamping plates are all configured as arc-shaped plates that match the centralizer body.

[0009] Furthermore, the surfaces of the pulling blocks are sleeved with receiving grooves which are arranged on the ends of the centralizer body, and the receiving grooves are all configured as arc-shaped grooves which match the pulling blocks.

[0010] Furthermore, the insertion rods are all configured to be cylindrical, and the middle of the fixing rings are all provided with circular through holes that match the insertion rods.

[0011] The beneficial effects of the utility model are:

[0012] 1. The centralizer is provided with a fixing ring, an insert rod, a slot and an avoidance groove. The operator pulls the insert rod to open the avoidance groove, and then the operator moves another centralizer body to drive the fixing ring of the other centralizer body to be inserted into the avoidance groove. Then the operator inserts the insert rod through the fixing ring into the slot, so that the two sets of centralizer bodies are installed together, so that the operator no longer needs to carry the pin shaft when installing several sets of centralizer bodies, so as to avoid the pin shaft being damaged and deformed after being hit, thereby improving the convenience of the operator to install the centralizer.

[0013] 2. The centralizer is provided with a fixed block, a rolling ball and a ball groove. After the fixed block is driven to move by the centralizer body, the fixed block drives the rolling ball to move through the ball groove, so that the rolling ball rotates in the ball groove and rolls on the well wall, thereby reducing the friction between the centralizer body and the well wall and improving the stability of the movement of the centralizer body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of the front cross-sectional structure of the utility model in a disassembled state;

[0016] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model in a top view;

[0017] Figure 4 For the utility model Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0018] Figure 5 For the utility model Figure 2Schematic diagram of the enlarged structure at point B in the middle.

[0019] In the figure:

[0020] 1. The main body of the centralizer; 2. The fixing block; 3. The rolling ball; 4. The ball groove; 5. The clamping plate; 6. The first spring groove; 7. The push rod; 8. The first spring; 9. The fixing ring; 10. The avoidance groove; 11. The second spring groove; 12. The storage groove; 13. The slot; 14. The insertion rod; 15. The limit block; 16. The second spring; 17. The pull block. DETAILED DESCRIPTION

[0021] In order to further understand the content, features and effects of the utility model, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0022] Example:

[0023] See also Figure 1 - Figure 5A petroleum construction centralizer, comprising a centralizer body 1, a side of the centralizer body 1 is provided with an avoidance groove 10, and a fixing ring 9 welded on another centralizer body 1 is inserted in the middle of the avoidance groove 10, a plug rod 14 is passed through the middle of the fixing ring 9, the plug rod 14 is set to be cylindrical, a circular through hole matching the plug rod 14 is provided in the middle of the fixing ring 9, and a second spring 16 provided on the centralizer body 1 is sleeved in the middle of the plug rod 14, a second spring groove 11 is wound around the surface of the plug rod 14, and the ends of both sides of the second spring groove 11 are respectively abutted against the inner wall of the second spring 16 and the plug rod 14 welded on the inner wall of the second spring 16. The ends of the plunger 14 are sleeved with slots 13 provided on the inner wall of the avoidance groove 10, and the ends of the plunger 14 away from the plunger 14 are welded with pull blocks 17. When the operator installs several groups of centralizer bodies 1 to each other, the operator first pulls the pull blocks 17 to drive the limit blocks 15 to move in the second spring 16 through the plunger 14. When the limit blocks 15 move in the second spring 16, the limit blocks 15 squeeze the second spring groove 11 to cause the second spring groove 11 to undergo elastic deformation. After the second spring groove 11 undergoes elastic deformation, the second spring groove 11 The limit block 15 is avoided, so that the insertion rod 14 enters the second spring 16. When the insertion rod 14 enters the second spring 16, the operator takes another centralizer body 1, and the centralizer body 1 drives the fixing ring 9 to move, and the fixing ring 9 is inserted into the avoidance groove 10. When the fixing ring 9 is inserted into the avoidance groove 10, the operator releases the pull block 17, so that the pull block 17 no longer squeezes the second spring groove 11 through the insertion rod 14 and the limit block 15, and the second spring groove 11 elastically recovers, and the second spring groove 11 pushes the limit block 15 to move, and the limit block 15 drives the insertion rod 14 to move, and the insertion rod 1 4 is moved out from the second spring 16, and the cylindrical shape of the plug rod 14 passes through the circular through hole opened in the middle of the fixing ring 9, and then the plug rod 14 is inserted into the slot 13, so that the fixing ring 9 is fixed in the avoidance groove 10. After the fixing ring 9 is fixed in the avoidance groove 10, it is convenient for the operator to connect several groups of centralizer bodies 1 to each other, and when the cylindrical shape of the plug rod 14 matches the circular through hole opened in the middle of the fixing ring 9, after the cylindrical shape of the plug rod 14 is inserted into the fixing ring 9, the surface of the plug rod 14 and the inner wall of the fixing ring 9 are fitted with each other, thereby improving the stability of the plug rod 14 inserted into the fixing ring 9.

[0024] In other embodiments, a fixing block 2 is welded to the middle of the centralizer body 1, and a plurality of groups of ball grooves 4 are opened in the middle of the fixing block 2, and rolling balls 3 are embedded in the ball grooves 4, push rods 7 are welded to the side walls of the fixing block 2, and the surfaces of the push rods 7 are sleeved with first spring grooves 6, first springs 8 are arranged inside the first spring grooves 6, and the ends of both sides of the first springs 8 are respectively abutted between the inner walls of the first spring grooves 6 and the surfaces of the push rods 7, and clamps 5 are welded to the surfaces of the first spring grooves 6. When the operator installs the centralizer body 1 on the pipeline, the pipeline drives the centralizer body 1 to move, and the centralizer body 1 drives the fixing block 2 to move, so that the fixing block 2 drives the rolling balls 3 to move through the ball grooves 4. Since the rolling balls 3 fit the inner wall of the wellbore, when the fixing block 2 drives the rolling balls 3 to move through the ball grooves 4, the rolling balls 3 fit the inner wall of the wellbore, so that the rolling balls 3 roll on the inner wall of the wellbore, and The ball 3 rotates in the ball groove 4, and the ball 3 rolls on the inner wall of the wellbore to reduce the friction of the centralizer body 1 moving in the wellbore, thereby improving the stability of the movement of the centralizer body 1. When the centralizer body 1 drives the fixed block 2 to move in the wellbore, the fixed block 2 is squeezed by the wellbore, and the fixed block 2 pushes the push rod 7 to move, so that the push rod 7 moves in the first spring groove 6. When the push rod 7 moves in the first spring groove 6, the push rod 7 squeezes the first spring 8, so that the first spring 8 is elastically deformed, and the first spring 8 avoids the push rod 7 and the fixed block 2. When the fixed block 2 is no longer squeezed by the inner wall of the wellbore, the elastic deformation of the first spring 8 is restored, and the first spring 8 pushes the push rod 7 to move, so that the push rod 7 pushes the fixed block 2 to move, and the fixed block 2 drives the centralizer body 1 to move, so that the centralizer body 1 is reset, thereby avoiding deformation of the centralizer body 1.

[0025] In other embodiments, the clamping plate 5 is configured as an arc-shaped plate that matches the centralizer body 1. By configuring the clamping plate 5 as an arc-shaped plate that matches the centralizer body 1, the fixing block 2 can match the centralizer body 1, and the stability of the pipe clamping is improved by the fixing block 2.

[0026] In other embodiments, the surface of the pulling block 17 is provided with a receiving groove 12 opened on the end of the centralizer body 1, and the receiving groove 12 is configured as an arc-shaped groove that matches the pulling block 17. By opening the receiving groove 12 on the end of the centralizer body 1, and matching the receiving groove 12 with the pulling block 17, the receiving groove 12 can accommodate the pulling block 17, so that the end of the centralizer body 1 is flattened, thereby improving the safety of the use of the centralizer body 1.

[0027] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A petroleum construction centralizer, comprising a centralizer body (1), characterized in that: A side of the centralizer body (1) is provided with an avoidance groove (10), and a fixing ring (9) fixed on another centralizer body (1) is inserted in the middle of the avoidance groove (10), a plug rod (14) is passed through the middle of the fixing ring (9), and a second spring (16) provided on the centralizer body (1) is sleeved in the middle of the plug rod (14), a second spring groove (11) is wound around the surface of the plug rod (14), and the two side ends of the second spring groove (11) are respectively abutted between the inner wall of the second spring (16) and the surface of a limit block (15) fixed on the plug rod (14), the end of the plug rod (14) is sleeved with a slot (13) provided on the inner wall of the avoidance groove (10), and a pull block (17) is fixed to the end of the plug rod (14) away from the plug rod (14).

2. A petroleum construction centralizer according to claim 1, characterized in that: A fixing block (2) is fixed in the middle of the centralizer body (1), and a plurality of ball grooves (4) are opened in the middle of the fixing block (2), and rolling balls (3) are embedded in the ball grooves (4).

3. A petroleum construction centralizer according to claim 2, characterized in that: A push rod (7) is fixed on the side wall of the fixed block (2), and a first spring groove (6) is sleeved on the surface of the push rod (7). A first spring (8) is arranged inside the first spring groove (6), and the two side ends of the first spring (8) are respectively abutted between the inner wall of the first spring groove (6) and the surface of the push rod (7), and a clamping plate (5) is fixed on the surface of the first spring groove (6).

4. A petroleum construction centralizer according to claim 3, characterized in that: The clamping plates (5) are all configured as arc-shaped plates that match the centralizer body (1).

5. The petroleum construction centralizer according to claim 1, characterized in that: The surface of the pulling block (17) is sleeved with a receiving groove (12) opened on the end of the centralizer body (1), and the receiving groove (12) is configured as an arc-shaped groove matching the pulling block (17).

6. The petroleum construction centralizer according to claim 1, characterized in that: The insertion rods (14) are all configured to be cylindrical, and the middle of the fixing ring (9) is provided with a circular through hole that matches the insertion rods (14).

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