CN205297377U - Can dismantle spiral stabilizer - Google Patents

Abstract

The utility model relates to a can dismantle spiral stabilizer, including the body, right strip, bolt hole, fastening bolt, draw -in groove, male thread joint and female screwed joint and be equipped with the bolt through -hole on rightting the strip, be equipped with the draw -in groove on the body, be equipped with the bolt blind hole in the draw -in groove, fastening bolt passes through the bolt with hole and bolt blind hole, will right in the strip installs the draw -in groove on the body, the male thread joint is located the body upper end, female screwed joint is located the body lower extreme. The utility model discloses a detachable strip of rightting wearing and tearing appear, drops and during the condition such as deformation, can directly change and right the strip when rightting the strip, need not to change whole spiral stabilizer.

Description

A kind of detachable spiral stabilizer

Technical field

This utility model relates to a kind of oil-well drilling equipment, specifically a kind of detachable spiral stabilizer.

Background technology

Drilling well spiral stabilizer is with then oil, natural gas and geological prospecting drilling engineering control the main tool of hole deviation, spiral stabilizer is carried out centralizing function by being distributed in the righting strip that three spirals of side, four spirals or more spiral form, its working surface is high-abrasive material, conventional surface generally can carry out consolidation process, such as the various ways such as tungsten carbide button's post, mosaic diamond complex, build-up wear-resistant welding rod, also low temperature brazing hard alloy bar. Drilling tool is in drilling process, drilling tool stabilizer is in rotary course, and its righting strip can produce friction with the borehole wall, even if friction surface has carried out consolidation process, still it is likely to occur abrasion, the situation such as come off, thus drilling tool stabilizer is damaged, it is impossible to realizes controlling the effect of hole deviation, only again regulator is changed, not only cost increases, and needs a large amount of spiral stabilizer of well site deposit, increases cost and floor space.

Utility model content

In order to overcome the above-mentioned defect increasing drilling cost owing to changing spiral stabilizer, this utility model provides a kind of detachable spiral stabilizer, at righting strip, abrasion occurs, come off and during the situation such as deformation, can directly change righting strip, without changing whole spiral stabilizer, what decrease spiral stabilizer makes consumption, thus reducing drilling cost.

In order to solve above-mentioned technical problem, the technical solution adopted in the utility model is:

A kind of detachable spiral stabilizer, including body and righting strip, it is characterised in that: described body is provided with draw-in groove, and described righting strip is arranged in draw-in groove, and righting strip is bolted in draw-in groove.

Described draw-in groove is spiral groove, and righting strip and draw-in groove match, and be provided with bolt blind hole, righting strip is provided with bolt hole in draw-in groove, and righting strip is fixed in draw-in groove by bolt through the bolt blind hole in the bolt hole and draw-in groove of righting strip.

Described card groove depth is be more than or equal to 10mm.

Described draw-in groove is open draw-in groove, the both ends open of open draw-in groove.

Described draw-in groove is closed type draw-in groove, closed type draw-in groove two ends imperforation.

Described draw-in groove is at least one, and the bolt blind hole at least two in draw-in groove, bolt blind hole is positioned on draw-in groove axis.

The axis of described bolt blind hole is perpendicular with the axis of body.

The aperture of described bolt hole and bolt blind hole is not less than 1cm, and the degree of depth of bolt blind hole is not less than 3cm.

Described righting strip is nichrome material, and wear surface top layer is coated with TiCN coating, and coating layer thickness is 5 ��m.

Described righting strip and draw-in groove adopt interference fit, and fit tolerance is less than or equal to 2 ��m.

Described body one end is provided with male thread joint, and the other end is provided with box thread joint, and multiple bodies are connected with box thread joint by male thread joint.

The utility model has the advantage of:

1. this utility model includes body and righting strip, and described body is provided with draw-in groove, and described righting strip is arranged in draw-in groove, and righting strip is bolted in draw-in groove. With bolts, detachably there is abrasion when righting strip, comes off and during the situation such as deformation in righting strip, can directly change righting strip, it is not necessary to change whole regulator, which reduces the consumption that makes of spiral stabilizer, reduce drilling cost.

2. this utility model draw-in groove is open draw-in groove, the both ends open of open draw-in groove; Described draw-in groove is closed type draw-in groove, closed type draw-in groove two ends imperforation. The draw-in groove of regulator is provided with two types, under different geological conditions, can adopt the regulator of different draw-in groove type, to adapt to formation condition.

3. this utility model card groove depth is be more than or equal to 10mm, it is easily installed righting strip, ensure that the thickness that righting strip is located within the body is not less than 10mm, connect more firm, ensure that the stability of connection, when drilling well, righting strip is not easy to come off, righting strip is not easy to be broken off in actual use procedure, reduces the replacing number of times of righting strip.

4. this utility model draw-in groove is at least one, bolt blind hole at least two in draw-in groove, bolt blind hole is positioned on draw-in groove axis, and the axis of bolt blind hole is perpendicular with the axis of body, the aperture of described bolt hole and bolt blind hole is not less than 1cm, and the degree of depth of bolt blind hole is not less than 3cm. Two bolt blind holes of this utility model and bolt hole just have two bolts, increase the holding capacity of bolt, bolt is avoided to be broken off in the process used, righting strip is caused to come off, aperture and the degree of depth as bolt hole and bolt blind hole are provided to ensure that bolt is connected firmly, being not broken, bolt does not fall off. Bolt blind hole is positioned on draw-in groove axis, and the axis of bolt blind hole is perpendicular with the axis of body, it is ensured that bolt is uniform force on body, will not destroy body.

5. this utility model righting strip is nichrome material, and wear surface top layer is coated with TiCN coating, and coating layer thickness is 5 ��m. Improving the wearability of righting strip, extend the service life of righting strip, that reduces righting strip makes consumption.

6. this utility model righting strip and draw-in groove adopt interference fit, and fit tolerance is less than or equal to 2 ��m. Adopt interference fit, righting strip will not in draw-in groove play, the power received by righting strip is delivered on body, it is to avoid righting strip is impaired.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Fig. 2 is this utility model draw-in groove is the sectional view of open draw-in groove;

Fig. 3 is this utility model draw-in groove be Guan Bi time draw-in groove sectional view;

Sectional view is looked under Fig. 4 this utility model body.

Shown in figure: 1, male thread joint, 2, box thread joint, 3, body, 4, righting strip, 5, bolt hole, 6, fastening bolt, 7, draw-in groove, 8, bolt blind hole.

Detailed description of the invention

Below in conjunction with Figure of description and embodiment, this utility model is described in detail, but is not limited to this.

As shown in Figure 1 to 4, for the detachable spiral stabilizer of one, fastening bolt 6, draw-in groove 7, male thread joint 1 logical 5 including body 3, righting strip 4, bolt hole and box thread joint 2, righting strip 4 is provided with bolt hole logical 5, and described body 3 is provided with draw-in groove 7, and described draw-in groove 7 is provided in the spiral groove on body 3, and spiral helicine righting strip 4 is positioned in draw-in groove 7, draw-in groove 7 is provided with bolt blind hole 8, righting strip 4 is installed in draw-in groove 7 on the body 3 by bolt hole 5 and bolt blind hole 8 by described fastening bolt 6, described bolt blind hole 8 is positioned at draw-in groove 7 axis, in every clamp bar slot 7, bolt blind hole 8 quantity is no less than 2, bolt blind hole 8 axis is vertical with body 3 axis, after fastening bolt 6 fix in position, it is welded and fixed nut and the bolt hole logical 5 of fastening bolt 6, and sanding and polishing welding junction, described male thread joint 1 is positioned at body 3 upper end, described box thread joint 2 is positioned at body 3 lower end, described righting strip 4 is nichrome material, wear surface top layer is coated with TiCN coating, coating layer thickness is 5 ��m, TiCN coating can be effectively improved the wear resistence of righting strip.

As shown in Figures 2 and 3, described draw-in groove 7 has two kinds of shapes, one is open draw-in groove, one is closed type draw-in groove, there is opening at open draw-in groove two ends, closed type draw-in groove two ends imperforation, both draw-in grooves 7 are respectively used to relatively soft formation and relatively hard formation, compared with soft formation, righting strip 4 resistance is less, the meaning adopting open draw-in groove is in that open port can reduce draw-in groove 7 Milling Machining difficulty, save cost, and relatively hard formation is bigger to righting strip 4 resistance, the meaning adopting closed type draw-in groove is in that the port of Guan Bi can provide bigger fastening force for righting strip 4, the firm of righting strip 4 is ensured together in conjunction with fastening bolt 6.

In use, there is abrasion, comes off or the situation such as deformation in down-hole in spiral stabilizer, spiral stabilizer can be taken out, outward winding damage righting strip 4 on fastening bolt 6, take out righting strip 4, new righting strip 4 is installed and gets on and screw fastening bolt 6, be installed on drilling rod by male thread joint 1 and 2 regulators of box thread joint, again go into the well, start operation.

The above is only preferred implementation of the present utility model, it is noted that this utility model is not limited to aforesaid way, and under the premise without departing from this utility model principle, moreover it is possible to improve further, these improvement also should be regarded as protection domain of the present utility model.

Claims (10)

1. a detachable spiral stabilizer, including body and righting strip, it is characterised in that: described body is provided with draw-in groove, and described righting strip is arranged in draw-in groove, and righting strip is bolted in draw-in groove.

2. the detachable spiral stabilizer of one according to claim 1, it is characterized in that: described draw-in groove is spiral groove, righting strip and draw-in groove match, bolt blind hole it is provided with in draw-in groove, being provided with bolt hole on righting strip, righting strip is fixed in draw-in groove by bolt through the bolt blind hole in the bolt hole and draw-in groove of righting strip.

3. the detachable spiral stabilizer of one according to claim 1 and 2, it is characterised in that: described card groove depth is be more than or equal to 10mm.

4. the detachable spiral stabilizer of one according to claim 3, it is characterised in that: described draw-in groove is open draw-in groove, the both ends open of open draw-in groove.

5. the detachable spiral stabilizer of one according to claim 3, it is characterised in that: described draw-in groove is closed type draw-in groove, closed type draw-in groove two ends imperforation.

6. the detachable spiral stabilizer of one according to claim 2, it is characterised in that: described draw-in groove is at least one, and the bolt blind hole at least two in draw-in groove, bolt blind hole is positioned on draw-in groove axis.

7. the detachable spiral stabilizer of one according to claim 2, it is characterised in that: the axis of described bolt blind hole is perpendicular with the axis of body.

8. a kind of detachable spiral stabilizer according to claim 2 or 7, it is characterised in that: the aperture of described bolt hole and bolt blind hole is not less than 1cm, and the degree of depth of bolt blind hole is not less than 3cm.

9. the detachable spiral stabilizer of one according to claim 1, it is characterised in that: described righting strip is nichrome material, and wear surface top layer is coated with TiCN coating, and coating layer thickness is 5 ��m.

10. a kind of detachable spiral stabilizer according to claim 1 or 9, it is characterised in that: described righting strip and draw-in groove adopt interference fit, and fit tolerance is less than or equal to 2 ��m.