Casing running rolling guiding shoe for well drilling and well completion

Abstract

The utility model relates to the technical field of well drilling guiding shoes, in particular to a rolling guiding shoe for casing running during well drilling and well completion. The well drilling and completion casing rolling guide shoe comprises a guide shoe body and a plurality of rolling assemblies installed on the guide shoe body, each rolling assembly comprises a lantern ring, rolling wheels are fixedly installed on the outer ring wall of each lantern ring through a rack, and an inserting column is fixedly embedded in each lantern ring. The well drilling and completion casing rolling guide shoe provided by the utility model is screwed downwards along the external thread section, the pressing ring is screwed downwards along the external thread section, the abutting column is firmly abutted against the lantern ring of the rolling assembly on the uppermost layer, the rolling assembly is fixed, and after the pressing ring is reversely screwed to be detached from the guide shoe body, the rolling assembly is fixed. Each group of lantern rings can be detached from the guide shoe body by sequentially sliding the lantern rings upwards, the detachable rolling assembly on the guide shoe body is convenient for workers to take down the rolling wheel from the guide shoe body, and the rolling wheel, the rolling wheel and the guide shoe body are comprehensively and carefully inspected.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling guide shoes, in particular to a casing rolling guide shoe for drilling and well completion. Background Art

[0002] At present, the casing guide shoes used in oil field drilling and completion are all made of casing cut and welded. When the casing is lowered, the friction between the guide shoe and the formation is surface contact sliding friction, and the resistance is large. Especially when completing horizontal wells, large displacement wells and high-angle wells, it is easy to cause the casing to fail to reach the designed well depth, affecting production operations. In response to the above problem, the application document with authorization announcement number CN201045283Y adopts the method of installing rollers on the guide shoe, so that the friction between the guide shoe and the formation is changed from sliding friction to rolling friction. However, the installation and removal of the roller are not easy, resulting in the roller needing to continuously contact and roll with the well wall after long-term use, especially when the well wall conditions are poor, such as when the well wall rock hardness is high and contains gravel, the wear of the roller will be more serious. After the roller is worn, its rolling performance will decrease, the drag reduction effect will also deteriorate, and it may even cause the roller to fail, and then the replacement of the guide shoe increases the hidden danger of operating cost and time.

[0003] Therefore, it is necessary to provide a new casing rolling guide shoe for drilling and completion to solve the above technical problems. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a rolling guide shoe for casing under drilling and completion.

[0005] The utility model provides a casing rolling guide shoe for drilling and completion, which comprises a guide shoe body and a plurality of rolling assemblies detachably mounted on the guide shoe body, and the rolling assembly comprises a collar, on the outer ring wall of which a plurality of annularly distributed rolling wheels are fixedly mounted through a frame, and a plurality of annularly distributed and axially arranged plug-in columns are fixedly embedded in the collar;

[0006] The guide shoe body is provided with a plurality of annularly distributed and axially arranged grooves, and the grooves match the inserted columns;

[0007] An external threaded section is arranged on the outer tube wall of the guide shoe body near the top, and a threaded compression ring is sleeved on the external threaded section. A plurality of annularly distributed and axially arranged abutment columns are installed on the compression ring.

[0008] Preferably, a positioning B hole is provided on the upper end surface of the insertion column, and a positioning A rod is fixedly installed on the lower end surface of the insertion column.

[0009] Preferably, a positioning A hole for inserting a positioning A rod is provided at the bottom of the groove.

[0010] Preferably, a rotating ring rotatably connected is installed on the lower ring surface of the compression ring, and a plurality of annularly distributed and axially arranged abutment columns are fixedly installed on the lower ring surface of the rotating ring, and a positioning B rod matching the positioning B hole is fixedly installed on the lower cylindrical surface of each abutment column.

[0011] Preferably, a brush for cleaning the rolling wheel is mounted on the frame.

[0012] Preferably, a conical portion is provided at the bottom of the guide shoe body, and an internal threaded opening is provided on the inner wall of the top of the guide shoe body.

[0013] Compared with the related art, the casing rolling guide shoe provided by the utility model for drilling and completion has the following beneficial effects:

[0014] The utility model sets a compression ring onto the external thread section and makes each abutment column correspond to each groove opened on the guide shoe body, and then screws it downward along the external thread section. Since the compression ring is connected with the abutment column through a rotating ring, the compression ring is screwed downward along the external thread section and makes the abutment column firmly abut on the sleeve ring of the uppermost rolling assembly, thereby completing the fixing of the rolling assembly. After the compression ring is reversely rotated to remove it from the guide shoe body, each group of sleeve rings can be slid up in turn to remove each group of sleeve rings from the guide shoe body. The detachable rolling assembly on the guide shoe body is convenient for the staff to remove the rolling wheel from the guide shoe body, and conduct a comprehensive and detailed inspection of the rolling wheel itself and the connection part between the rolling wheel and the guide shoe body, the roller and other components, so as to timely discover potential problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A structural schematic diagram of a preferred embodiment of the casing rolling guide shoe for drilling and completion provided by the utility model;

[0016] Figure 2 for Figure 1 The structural schematic diagram of the guide shoe body shown;

[0017] Figure 3 for Figure 1 A schematic structural diagram of the roller assembly shown;

[0018] Figure 4 for Figure 1 Schematic diagram of the structure of the press-fit ring shown.

[0019] Numbers in the figure: 1. Guide shoe body; 1a. Cutting groove; 1b. Positioning hole A; 11. Conical portion; 12. Internal threaded opening; 13. External threaded section; 2. Roller assembly; 21. Ring; 22. Rolling wheel; 23. Insertion column; 23a. Positioning hole B; 24. Positioning rod A; 3. Pressing ring; 4. Abutment column; 5. Positioning rod B; 6. Rotating ring; 7. Brush. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0021] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0022] See also Figures 1 to 4 The embodiment of the utility model provides a casing rolling guide shoe for drilling and completion, wherein the casing rolling guide shoe for drilling and completion comprises a guide shoe body 1 and a plurality of rolling components 2 detachably mounted on the guide shoe body 1.

[0023] In the embodiments of the present invention, please refer to Figures 1 to 4 The bottom of the guide shoe body 1 is provided with a conical portion 11, and the inner wall of the top of the guide shoe body 1 is provided with an internal threaded opening 12, and the guide shoe body 1 is provided with a plurality of annularly distributed and axially arranged grooves 1a, and the rolling assembly 2 includes a collar 21, and a plurality of annularly distributed rolling wheels 22 are fixedly installed on the outer ring wall of the collar 21 through a frame, and a plurality of annularly distributed and axially arranged plug-in columns 23 are fixedly embedded in the collar 21, and the plug-in columns 23 match the grooves 1a;

[0024] An externally threaded section 13 is provided on the outer tube wall near the top of the guide shoe body 1, and a threaded compression ring 3 is sleeved on the externally threaded section 13, on which a plurality of annularly distributed and axially arranged abutment columns 4 are installed. Specifically, a rotatably connected rotating ring 6 is installed on the lower annular surface of the compression ring 3, and a plurality of annularly distributed and axially arranged abutment columns 4 are fixedly installed on the lower annular surface of the rotating ring 6.

[0025] It should be noted that when assembling the rolling assembly 2, the collar 21 is sleeved onto the top of the guide shoe body 1, and each insertion column 23 on the collar 21 corresponds to each groove 1a opened on the guide shoe body 1, and then the insertion column 23 is slid to the bottom of the groove 1a, and then each group of rolling assemblies 2 is sequentially installed on the guide shoe body 1 in the above manner and overlapped;

[0026] After completion, the pressing ring 3 is sleeved onto the external threaded section 13 and each abutting column 4 is made to correspond to each groove 1a opened on the guide shoe body 1, and then screwed downward along the external threaded section 13. Since the pressing ring 3 is connected to the abutting column 4 through the rotating ring 6, the pressing ring 3 is screwed downward along the external threaded section 13 and the abutting column 4 is firmly abutted against the collar 21 of the uppermost rolling assembly 2, thereby completing the fixing of the rolling assembly 2;

[0027] When the rolling assembly 2 needs to be replaced or maintained, it is only necessary to reverse the pressing ring 3 to remove it from the guide shoe body 1, and then slide up the rings 21 of each group in turn to remove the rings 21 of each group from the guide shoe body 1. The overall operation is simple and convenient, and the detachable rolling assembly 2 on the guide shoe body 1 is convenient for the staff to remove the rolling wheel 22 from the guide shoe body 1, and conduct a comprehensive and detailed inspection of the rolling wheel 22 itself and the connection part of the rolling wheel 22 and the guide shoe body 1, the roller and other components, so as to timely discover potential problems, such as the degree of wear of the rolling wheel 22, the deformation of the roller, the looseness of the connection part, etc., which helps to take measures in advance to avoid further deterioration of the problem and ensure the normal use of the guide shoe body 1;

[0028] At the same time, in different drilling operation environments, it may be necessary to use rolling wheels 22 of different specifications, materials or characteristics, and the detachable rolling wheels 22 allow the operator to flexibly replace the appropriate rolling wheels 22 according to the needs of the actual working conditions, thereby improving the adaptability of the guide shoe body 1. For example, when the well wall hardness is high, it can be replaced with a more wear-resistant rolling wheel 22; when better anti-slip performance is required, it can be replaced with a rolling wheel 22 with special patterns or materials;

[0029] In the present embodiment: a positioning B hole 23a is provided on the upper end surface of the insertion column 23, and a positioning A rod 24 is fixedly installed on the lower end surface of the insertion column 23, a positioning A hole 1b for inserting the positioning A rod 24 is provided at the bottom of the groove 1a, and a positioning B rod 5 matching the positioning B hole 23a is fixedly installed on the lower cylindrical surface of each abutment column 4. Therefore, when the lowest rolling component 2 is installed, the positioning A rod 24 on its insertion column 23 can be inserted into the positioning A hole 1b, and the positioning A rod 24 on the insertion column 23 of the upper rolling component 2 can be inserted into the positioning B hole 23a opened in the lower insertion column 23. When the pressing ring 3 is installed, the positioning B rod 5 on the abutment column 4 at the bottom of the pressing ring 3 can be inserted into the positioning B hole 23a opened in the insertion column 23 of the uppermost rolling component 2, so that the rolling component 2 can be stably installed in the guide shoe body 1.

[0030] Furthermore, a brush 7 for cleaning the rolling wheel 22 is installed on the frame, so that when the rolling wheel 22 rolls along the well wall, the brush 7 can clean the wheel body of the rolling wheel 22 located on the inner side.

[0031] Furthermore, a conical portion 11 is provided at the bottom of the guide shoe body 1, and an internal threaded opening 12 is provided on the inner wall of the top of the guide shoe body 1, and the well casing is connected by using the internal threaded opening 12.

[0032] The working principle of the rolling guide shoe for casing under drilling and completion provided by the utility model is as follows:

[0033] When assembling the rolling assembly 2, the ring 21 is sleeved onto the top of the guide shoe body 1, and the insertion columns 23 on the ring 21 correspond to the grooves 1a opened on the guide shoe body 1, and then the insertion columns 23 are slid to the bottom of the grooves 1a, and then each group of rolling assemblies 2 is installed on the guide shoe body 1 in turn and overlapped in the above manner; after completion, the pressing ring 3 is sleeved onto the external threaded section 13 and the abutting columns 4 correspond to the grooves 1a opened on the guide shoe body 1, and then screwed downward along the external threaded section 13. Since the pressing ring 3 is connected to the abutting columns 4 through the rotating ring 6, the pressing ring 3 is screwed downward along the external threaded section 13 and the abutting columns 4 are firmly abutted against the ring of the uppermost rolling assembly 2 21, thereby completing the fixing of the rolling assembly 2; when the rolling assembly 2 needs to be replaced or maintained, it is only necessary to reversely rotate the pressing ring 3 to remove it from the guide shoe body 1, and then slide up the rings 21 of each group in turn to remove each group of rings 21 from the guide shoe body 1. The overall operation is simple and convenient, and the detachable rolling assembly 2 on the guide shoe body 1 is convenient for the staff to remove the rolling wheel 22 from the guide shoe body 1, and conduct a comprehensive and detailed inspection of the rolling wheel 22 itself and the connection parts of the rolling wheel 22 and the guide shoe body 1, the roller and other components, so as to timely discover potential problems, such as the degree of wear of the rolling wheel 22, the deformation of the roller, the looseness of the connection parts, etc., which helps to take measures in advance to avoid further deterioration of the problem and ensure the normal use of the guide shoe body 1;

[0034] At the same time, in different drilling operation environments, it may be necessary to use rolling wheels 22 of different specifications, materials or characteristics. The detachable rolling wheel 22 allows the operator to flexibly replace the appropriate rolling wheel 22 according to the needs of the actual working conditions, thereby improving the adaptability of the guide shoe body 1. For example, when the well wall hardness is high, it can be replaced with a more wear-resistant rolling wheel 22; when better anti-slip performance is required, it can be replaced with a rolling wheel 22 with a special pattern or material.

[0035] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A casing rolling guide shoe for drilling and completion, characterized in that: It comprises a guide shoe body (1), and a plurality of rolling assemblies (2) detachably mounted on the guide shoe body (1), wherein the rolling assemblies (2) comprise a collar (21), a plurality of annularly distributed rolling wheels (22) being fixedly mounted on the outer ring wall of the collar (21) via a frame, and a plurality of annularly distributed and axially arranged insertion columns (23) being fixedly embedded in the collar (21); The guide shoe body (1) is provided with a plurality of annularly distributed and axially arranged grooves (1a), and the grooves (1a) match the insertion columns (23); An externally threaded section (13) is provided on the outer tube wall near the top of the guide shoe body (1), and a threaded compression ring (3) is sleeved on the externally threaded section (13), and a plurality of annularly distributed and axially arranged abutment columns (4) are mounted on the compression ring (3).

2. The casing rolling guide shoe for drilling and completion according to claim 1, characterized in that: A positioning B hole (23a) is provided on the upper end surface of the insertion column (23), and a positioning A rod (24) is fixedly mounted on the lower end surface of the insertion column (23).

3. The casing rolling guide shoe for drilling and completion according to claim 2, characterized in that: A positioning A hole (1b) for inserting a positioning A rod (24) is provided at the bottom of the cutting groove (1a).

4. The casing rolling guide shoe for drilling and completion according to claim 3 is characterized in that: The lower ring surface of the compression ring (3) is mounted with a rotatably connected rotating ring (6), and a plurality of annularly distributed and axially arranged abutment columns (4) are fixedly mounted on the lower ring surface of the rotating ring (6), and a positioning B rod (5) matching the positioning B hole (23a) is fixedly mounted on the lower cylinder surface of each abutment column (4).

5. The casing rolling guide shoe for drilling and completion according to claim 1, characterized in that: A brush (7) for cleaning the rolling wheel (22) is mounted on the frame.

6. The casing rolling guide shoe for drilling and completion according to claim 1, characterized in that: The bottom of the guide shoe body (1) is provided with a conical portion (11), and the inner wall of the top of the guide shoe body (1) is provided with an internal threaded opening (12).

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