CN215292383U - Stabilizer with reaming function - Google Patents

Abstract

The utility model provides a stabilizer with reaming effect, including top connection, the lower clutch, the stabilizer body, fin and flexible stabilizing block, stabilizer body top is provided with the top connection, stabilizer body bottom is provided with the lower clutch, stabilizer body outside evenly is provided with the fin all around, from top to bottom interval installs three flexible stabilizing block in each fin, the outer terminal surface of flexible stabilizing block is provided with the pulley, flexible stabilizing block outer terminal surface bottom is provided with the inner inclined plane, be provided with the cutting tooth on the inner inclined plane, this kind of structure meets the cutting work of thicker wall of a well, flexible stabilizing block becomes cascaded grading and carries out the cutting operation to the wall of a well, compare current protection tooth that directly uses the fin to carry out the cutting of big thickness to the wall of a well, avoid once only cutting with whole thickness, cut the wall of a well of the same thickness through three flexible stabilizing blocks for three times, the single cutting resistance is reduced, and the influence of the telescopic stabilizing block on the drilling resistance is reduced.

Description

Stabilizer with reaming function

Technical Field

The utility model relates to a stabilizer field especially relates to a stabilizer with reaming effect.

Background

The stabilizer is also called a centralizer and is a tool for stabilizing the underground drilling tool and playing a role in preventing inclination. The device is connected to a section of drill rod string near a large-diameter drilling tool and used for stabilizing the drilling direction, and is an important tool for preventing well deviation change in petroleum, natural gas and geological exploration drilling engineering.

The existing stabilizer is provided with fins all around, the fins contact with the well wall to achieve the effects of righting and diameter protection, after the drill bit is worn and abraded for a long time or a smaller drill bit is replaced, the outer diameter of a drilled well can be smaller than that of the stabilizer, supporting and pressing are easy to generate, even the situation of drilling can not be achieved, the existing stabilizer for reaming while drilling is designed for solving the problem, protective teeth are arranged on a chamfer of the fins of the stabilizer, the well wall rock is cut, the size of the well is widened by the protective teeth, the situation that the well can not be drilled nearby is prevented, but the structure is characterized in that the fins are of a fixed structure, if the thickness of the cut well wall is too large when the protective teeth cut the well wall, the larger downward drilling resistance can be generated, and the drilling efficiency of the drill bit is influenced.

Disclosure of Invention

According to the technical problem, the utility model provides a stabilizer with reaming effect, its characterized in that includes top connection, lower clutch, stabilizer body, fin and flexible stabilizing block, stabilizer body top is provided with the top connection, stabilizer body bottom is provided with the lower clutch, stabilizer body outside evenly is provided with the fin all around, the fin is 4, the contained angle between each fin is 90 degrees, the fin is the structure as an organic whole with the stabilizer body, three flexible stabilizing blocks are installed at the interval from top to bottom in each fin;

the wing piece is internally provided with a sliding groove A, a sliding groove B and a sliding groove C at intervals in sequence from top to bottom, the telescopic stabilizing block is sequentially and slidably mounted in the sliding groove A, the sliding groove B and the sliding groove C, springs are mounted in the sliding groove A, the sliding groove B and the sliding groove C, one end of each spring is respectively abutted against the inner walls of the sliding groove A, the sliding groove B and the sliding groove C, the other end of each spring is abutted against the telescopic stabilizing block, a limiting table A is arranged in the sliding groove A, a limiting table B is arranged in the sliding groove B, a limiting table C is arranged in the sliding groove C, and the widths of the limiting table A, the limiting table B and the limiting table C are sequentially reduced;

the outer end face of the telescopic stabilizing block is provided with N pulleys, N is larger than or equal to 2, an inner inclined plane is arranged at the bottom of the outer end face of the telescopic stabilizing block, and cutting teeth are arranged on the inner inclined plane.

The utility model has the advantages that:

the utility model has the advantages that the three telescopic stabilizing blocks are arranged on the wing panel from top to bottom, the three telescopic stabilizing blocks are respectively arranged in the chute A, the chute B and the chute C from top to bottom in a sliding way, and the chute A, the chute B and the chute C are internally provided with the limiting table A, the limiting table B and the limiting table C with the widths reduced in sequence, when the stabilizer body is used and the aperture of a borehole is reduced, the borehole can extrude the telescopic stabilizing blocks inwards to move inwards due to the arrangement of the inner inclined plane at the bottom end of the outer end surface of the telescopic stabilizing block, the spring is compressed at the same time, the widths of the limiting table A, the limiting table B and the limiting table C are reduced in sequence, so the final inward moving degrees of the three telescopic stabilizing blocks from top to bottom are different, the extruded positions are also different, the final telescopic stabilizing blocks are arranged in a ladder shape from bottom to top, the telescopic stabilizing block in the chute B is closer to the outside than the telescopic stabilizing block in the chute C, the telescopic stabilizing block in the chute A is closer to the outside than the telescopic stabilizing block in the chute B, so that the effect of cutting the well wall in a step manner is formed, the telescopic stabilizing block in the chute C at the bottommost end firstly cuts a part of the well wall in thickness through the cutting teeth, then the telescopic stabilizing block in the chute B at the upper end secondly cuts a part of the well wall in thickness, and finally the telescopic stabilizing block in the chute A at the topmost end cuts the well wall for the last time, so that the diameter of the well wall reaches the width diameter of the telescopic stabilizing block in a natural state, and the effect of widening the well wall is achieved. The single cutting resistance is reduced, the influence of the telescopic stabilizing block on the drilling resistance is reduced totally, the drilling efficiency is greatly increased, and the conditions of pressure supporting and drilling incapability are avoided.

Drawings

Fig. 1 is a cross-sectional view of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

fig. 3 is a schematic view of the present invention in operation in a wellbore.

As shown in the figure: 1. an upper joint; 2. a lower joint; 3. a stabilizer body; 4. a fin; 5. a telescopic stabilizing block; 6. a chute A; 7. a chute B; 8. a chute C; 9. a spring; 10. a limiting table A; 11. a limiting table B; 12. a limiting table C; 13. a pulley; 14. an inner bevel; 15. and (4) cutting teeth.

Detailed Description

Example 1

The utility model provides a stabilizer with reaming effect, its characterized in that includes top connection 1, lower clutch 2, stabilizer body 3, fin 4 and flexible stabilizing block 5, stabilizer body 3 top is provided with top connection 1, stabilizer body 3 bottom is provided with lower clutch 2, stabilizer body 3 outside evenly is provided with fin 4 all around, fin 4 is 4, the contained angle between each fin 4 is 90 degrees, fin 4 and stabilizer body 3 are structure as an organic whole, three flexible stabilizing block 5 are installed from top to bottom at interval in each fin 4;

sliding grooves A6, B7 and C8 are sequentially arranged in the fins 4 from top to bottom at intervals, the telescopic stabilizing blocks 5 are sequentially installed in the sliding grooves A6, B7 and C8 in a sliding mode, springs 9 are installed in the sliding grooves A6, B7 and C8, one ends of the springs 9 respectively abut against the inner walls of the sliding grooves A6, B7 and C8, the other ends of the springs 9 abut against the telescopic stabilizing blocks 5, limiting tables A10 are arranged in the sliding grooves A6, limiting tables B11 are arranged in the sliding grooves B7, limiting tables C12 are arranged in the sliding grooves C8, and the widths of the limiting tables A10, B11 and C12 are sequentially reduced;

the outer end face of the telescopic stabilizing block 5 is provided with N pulleys 13, N is larger than or equal to 2, the bottom of the outer end face of the telescopic stabilizing block 5 is provided with an inner inclined plane 14, and the inner inclined plane 14 is provided with cutting teeth 15.

Example 2

When the utility model is used, the upper joint 1 and the lower joint 2 at the upper end of the stabilizer body 3 are connected with the non-magnetic drill collar through threads, then the drilling main shaft is started, when the drilling main shaft normally works, the stabilizer body 3 rotates to drive the fins 4 and the telescopic stabilizing blocks 5 to rotate, the outer end faces of the telescopic stabilizing blocks 5 are positioned on the same vertical plane, and the pulleys 13 on the upper end are propped against the well wall to play the roles of righting and diameter keeping, when the diameter of the well wall on the lower side is reduced, because the inner inclined plane 14 of the telescopic stabilizing block 5 at the lowest end is arranged, the diameter of the inner wall of the well is reduced, the telescopic stabilizing block 5 at the lowest end is extruded by the inner inclined plane 14 to move towards the inner end of the chute C8 until the telescopic stabilizing block 5 is propped against the limit table C12, and simultaneously, the telescopic stabilizing block 5 on the upper side also simultaneously moves towards the inner sides of the chute B7 and the chute C8 under the extrusion effect of the well wall respectively to be propped against the limit table B11 and A10 respectively, because the width of spacing platform A10, spacing platform B11 and spacing platform C12 reduces between, so the final position of flexible stabilizing block 5 is by the cascaded structure that leans on outward gradually from bottom to top, as shown in fig. 3, the cutting tooth 15 of flexible stabilizing block 5 of below carries out partly cutting to the wall of a well earlier, then cascaded flexible stabilizing block 5 in top cuts the wall of a well of surplus part in proper order, the resistance of cutting at every turn can be reduced in the hierarchical cutting, greatly reduced the resistance when creeping into.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. The utility model discloses each part that mentions is the common technique in prior art, and the technical personnel of this trade should understand, the utility model discloses do not receive the restriction of above-mentioned embodiment, the description only is the explanation in above-mentioned embodiment and the description the principle of the utility model, under the prerequisite that does not deviate from the spirit and the scope of the utility model, the utility model discloses still can have various changes and improvement, these changes and improvement all fall into the protection of claim the utility model is within the scope. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (4)

1. A stabilizer with a reaming effect is characterized by comprising an upper joint, a lower joint, a stabilizer body, fins and telescopic stabilizing blocks, wherein the upper joint is arranged at the top end of the stabilizer body;

the wing piece is internally provided with a sliding groove A, a sliding groove B and a sliding groove C at intervals in sequence from top to bottom, the telescopic stabilizing block is sequentially and slidably mounted in the sliding groove A, the sliding groove B and the sliding groove C, springs are mounted in the sliding groove A, the sliding groove B and the sliding groove C, one end of each spring is respectively abutted against the inner walls of the sliding groove A, the sliding groove B and the sliding groove C, the other end of each spring is abutted against the telescopic stabilizing block, a limiting table A is arranged in the sliding groove A, a limiting table B is arranged in the sliding groove B, a limiting table C is arranged in the sliding groove C, and the widths of the limiting table A, the limiting table B and the limiting table C are sequentially reduced;

the outer end face of the telescopic stabilizing block is provided with a pulley, the bottom of the outer end face of the telescopic stabilizing block is provided with an inner inclined plane, and the inner inclined plane is provided with cutting teeth.

2. The stabilizer with reaming effect of claim 1, wherein the number of said wings is 4, and the included angle between each of said wings is 90 degrees.

3. A stabilizer with reaming effect according to claim 1, characterized in that the wings are of one-piece construction with the stabilizer body.

4. The stabilizer with reaming effect of claim 1, wherein the number of the pulleys is N, and N is greater than or equal to 2.

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