Anti-deviation centralizer for multilayer geological directional drilling

Abstract

The anti-deviation centralizer comprises a sleeve body, two sets of groove bodies are formed in one end of the sleeve body, frame bodies movably penetrate through the two sets of groove bodies, a plurality of sets of hole bodies are formed in one ends of the two sets of frame bodies, one end of the sleeve body is in threaded connection with two sets of first bolts, and the other end of the sleeve body is in threaded connection with two sets of second bolts. The two first bolts are in threaded connection with the corresponding hole bodies correspondingly, one ends of the two frame bodies are connected with rod bodies, the two rod bodies movably penetrate through plate bodies, the two rod bodies movably penetrate through roller bodies, and one ends of the two plate bodies are in threaded connection with second bolts. The frame bodies are moved along the groove body, the frame bodies drive the roller bodies to move, after moving is finished, the first bolts are screwed into the corresponding hole bodies, then the frame bodies are fixed, by adjusting the distance between the two sets of frame bodies, well holes with different hole diameters can be centralized to a certain extent during drilling, a drill bit is prevented from shifting when moving downwards, and the applicability is wide.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of geological drilling, especially to a multi-layer geological directional drilling deviation preventing centralizer. BACKGROUND

[0002] The centralizer is an important tool used in the fields of oil and gas drilling, geological exploration and the like, and mainly functions to keep the drilling tool in the central position in the wellbore and ensure the smooth drilling work.

[0003] The existing deviation preventing centralizers for multi-layer geological directional drilling are various, such as the roller centralizer, which is provided with rotatable rollers on the centralizer body. The rollers can reduce the friction between the centralizer and the well wall, making the drilling tool easier to rotate and advance during drilling. However, the position of the rollers is usually not adjustable, and the centralizer needs to be replaced when drilling different wellbores. SUMMARY

[0004] The utility model provides a deviation preventing centralizer for multi-layer geological directional drilling to solve the problems in the prior art.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] A deviation preventing centralizer for multi-layer geological directional drilling, comprising a sleeve body, two groups of groove bodies are formed at one end of the sleeve body, two groups of frame bodies are movably penetrated through the groove bodies, a plurality of hole bodies are formed at one end of each of the two groups of frame bodies, two groups of bolts one are threadedly connected at one end of the sleeve body, the two groups of bolts one are respectively threadedly connected with the corresponding hole bodies, a rod body is connected to one end of each of the two groups of frame bodies, a plate body is movably penetrated through each of the two groups of rod bodies, a roller body is movably penetrated through each of the two groups of rod bodies, and a bolt two is threadedly connected at one end of each of the two groups of plate bodies.

[0007] Preferably, the two groups of bolt two are respectively threadedly connected with the corresponding frame bodies.

[0008] Preferably, a gasket is connected to one end of each of the two groups of bolt one and bolt two.

[0009] Preferably, a reinforcing rib is connected to one end of each of the two groups of frame bodies.

[0010] Preferably, a connecting port one is connected to one end of the sleeve body.

[0011] Preferably, a connecting port two is connected to one end of the sleeve body.

[0012] Preferably, the two groups of groove bodies are T-shaped and respectively matched with the corresponding frame bodies.

[0013] The utility model has the advantages of:

[0014] 1. By cooperating with the set hole body, frame body and bolt one, the frame body moves along the groove body, the frame body drives the roller body to move. After the movement is completed, bolt one is screwed into the corresponding hole body, thereby fixing the frame body. By adjusting the distance between the two sets of frame bodies, it can be straightened to a certain extent when drilling wells of different diameters, preventing the drill bit from deviating when it moves down. It has a wide range of applications.

[0015] 2. By using the connection between the set bolt two, the rod body, and the roller body, rotate bolt two to unscrew it from the frame, remove the plate body, remove the restriction on the roller body, pull the roller body out along the rod body, move the new roller body along the rod body until it fits against the frame body, move the plate body along the rod body to make the plate body and roller body press tightly together, and screw in bolt two to complete the fixing of the plate body. To a certain extent, the operation of replacing the roller body is relatively simple and convenient for the staff to operate. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a multi-layer geological directional drilling anti-deviation stabilizer proposed in this utility model;

[0017] Figure 2 for Figure 1 Schematic diagram of the structure of the middle roller body, plate body and bolt 2;

[0018] Figure 3 for Figure 1 A schematic diagram of the structure of the connecting port 1, the reinforcing rib, and the hole;

[0019] Figure 4 for Figure 1 A schematic diagram of the structure of the bolt, washer, and hole;

[0020] Figure 5 for Figure 1 Structural diagram of the middle tank, frame, and sleeve.

[0021] In the diagram: 1. Sleeve; 2. Groove; 3. Frame; 4. Hole; 5. Bolt 1; 6. Rod; 7. Plate; 8. Bolt 2; 9. Roller; 10. Washer; 11. Reinforcing rib; 12. Connection port 1; 13. Connection port 2. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example 1, referring to Figures 1 to 5The utility model provides a kind of deviation-preventing centralizer for multilayer geology directional drilling, including sleeve 1, sleeve 1 one end is equipped with two groups of slot 2, bracket 3 is slid in slot 2, two groups of slot 2 are all movably penetrated with bracket 3, two groups of bracket 3 one end are all equipped with multiple hole bodies 4, multiple hole bodies 4 are evenly distributed in bracket 3 one end, sleeve 1 one end is screw-connected with two groups of bolt one 5, bolt one 5 one end is connected with knob, two groups of bolt one 5 are respectively screw-connected with corresponding hole body 4, bolt one 5 is screwed into hole body 4, and bracket 3 can be fixed, two groups of bracket 3 one end are all connected with rod 6, two groups of rod 6 are all movably penetrated with plate 7, two groups of rod 6 are all movably penetrated with roller 9, two groups of plate 7 one end are all screw-connected with bolt two 8, by adjusting the distance between two groups of bracket 3, it can be righted to the drilling assembly when the wellbore of different sizes is drilled to a certain extent, avoid the drilling assembly to deviate, and the applicability is wider.

[0024] In the embodiment, two groups of bolt two 8 are respectively screw-connected with corresponding bracket 3, roller 9 is moved along rod 6, plate 7 is moved along rod 6 and pushes roller 9, so that it is attached to one end of bracket 3, bolt two 8 is screwed into bracket 3, plate 7 is fixed, and the operation of replacing roller 9 is relatively simple, which improves the efficiency to a certain extent. One end of two groups of bolt one 5 and bolt two 8 is connected with gasket 10, which avoids the loosening of bolt one 5 and bolt two 8 caused by vibration to a certain extent. One end of two groups of bracket 3 is connected with reinforcing rib 11, which strengthens the structural strength of bracket 3 to a certain extent. One end of sleeve 1 is connected with connecting port one 12, which can be connected with driving assembly. One end of sleeve 1 is connected with connecting port two 13, which can be connected with drilling assembly. Two groups of slot 2 are T-shaped and respectively matched with corresponding bracket 3, the design of T-shaped avoids the upward force of well wall on roller 9 when the device is moved upward, which may drive bracket 3 to rotate, and improves the stability of bracket 3 to a certain extent.

[0025] The working principle of the embodiment is as follows: during use, roller 9 is moved along rod 6 until it is attached to bracket 3, plate 7 is moved along rod 6 until it is attached to roller 9, bolt two 8 is screwed into bracket 3, plate 7 cooperates with bracket 3 to limit roller 9 to a certain extent, so that roller 9 can rotate when it contacts with wellbore, the operation of replacing roller 9 is relatively simple, which facilitates the operation of staff to a certain extent, bracket 3 is moved, the distance between two groups of bracket 3 is adjusted according to the size of wellbore, bolt one 5 is screwed into bracket 3 to fix bracket 3, which has wider applicability to a certain extent, connecting port two 13 is connected with drilling assembly, connecting port one 12 is connected with driving device, sleeve 1 is moved downward along wellbore, during movement, roller 9 contacts with wellbore and rotates, which can reduce the friction between sleeve 1 and well wall to a certain extent, so that drill bit is easier to rotate and advance during drilling.

[0026] The above merely describes a preferred embodiment of the present application, but the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A multi-layer deviation control centralizer for geosteering drilling, comprising a sleeve (1), characterized in that, The sleeve body (1) is provided with two groups of groove bodies (2) at one end, two groups of frame bodies (3) movably penetrate the groove bodies (2), a plurality of hole bodies (4) are provided at one end of the two groups of frame bodies (3), two groups of bolts I (5) are threadedly connected at one end of the sleeve body (1), the two groups of bolts I (5) are respectively threadedly connected with the corresponding hole bodies (4), a rod body (6) is connected at one end of the two groups of frame bodies (3), a plate body (7) movably penetrates the rod body (6), a roller body (9) movably penetrates the rod body (6), and a bolt II (8) is threadedly connected at one end of the two groups of plate bodies (7).

2. A multi-layer deviation control centralizer for directional drilling of geological formations according to claim 1, characterized in that, The two groups of bolt II (8) are respectively threadedly connected with the corresponding frame body (3).

3. The multi-layer deviation control centralizer for directional drilling of geological formations according to claim 1, characterized in that, One end of the two groups of bolts I (5) and the bolt II (8) is connected with a gasket (10).

4. The multi-layer deviation control centralizer for directional drilling of geological formations according to claim 1, wherein, One end of the two groups of frame bodies (3) is connected with a reinforcing rib (11).

5. The multi-layer deviation control centralizer for directional drilling of geological formations according to claim 1, wherein, One end of the sleeve body (1) is connected with a connecting port I (12).

6. The multi-layer deviation control centralizer for directional drilling of geological formations according to claim 1, wherein, One end of the sleeve body (1) is connected with a connecting port II (13).

7. The multi-layer deviation control centralizer for directional drilling of geological formations according to claim 1, wherein, The two groups of groove bodies (2) are T-shaped and respectively matched with the corresponding frame bodies (3).

Images