CN211900505U - Roller centralizer device for petroleum drilling - Google Patents

Abstract

The utility model belongs to the technical field of the centralizer institutional advancement and specifically relates to a gyro wheel centralizer device for oil drilling, be responsible for including the right of a muff coupling on the current casing lateral wall that goes into the well the subassembly is right to the gyro wheel that is equipped with the adjustable formula of a plurality of along the even interval of its circumferencial direction in the right main pipe, at each the subassembly is right to the gyro wheel corresponds position department right to be provided with the perforating hole on the main pipe, each the subassembly is right to the gyro wheel the outer end of subassembly is right respectively through corresponding position department the perforating hole extends right the outside of being responsible for right the lateral wall of being responsible for is installed and is used for adjusting the subassembly is right to the gyro wheel soon. Can cooperate to realize supporting tightly inserting sheathed tube effective righting according to the operating mode when actually going into the well, can realize the spring adjustment when righting, right the sleeve pipe of subassembly cooperation accent subassembly adaptation different external diameters soon through the gyro wheel, the wearing and tearing of effectual reduction righting in-process reduce the card when lifting the sleeve pipe and hinder the probability, improve the security of operation construction.

Description

Roller centralizer device for petroleum drilling

Technical Field

The utility model belongs to the technical field of centralizer institutional advancement and specifically relates to a gyro wheel centralizer device for oil drilling.

Background

In the oil drilling process, when drilling depth constantly increases, the condition of drilling rod focus skew will appear, can lead to appearing serious inclined to one side friction phenomenon between the pore wall of centralizer and the drilling installed on the drilling string simultaneously, for guaranteeing the supporting effect between traditional centralizer and the drilling, the pure sliding friction of often adopting makes and the wall of a well between area of contact is big, and it is relatively poor to prevent the inclined to one side wearing effect. In addition, because the existing rigid centralizer is not easy to deform and has poor elasticity, the blockage is easy to occur when the well section with the reduced aperture is used in the working and construction process of casing running at the later stage of drilling, the lifting and lowering difficulty of the casing is larger, and certain potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the technical scheme that one of above-mentioned technical problem adopted and be: the utility model provides a gyro wheel centralizer device for oil drilling, includes the main pipe of righting that the cover connects on current well casing lateral wall that descends, the main pipe of righting is interior along its circumferencial direction even interval is equipped with the gyro wheel of a plurality of adjustable and right the subassembly, at each the subassembly of righting of gyro wheel corresponds the position department the main pipe of righting is provided with the perforating hole, each the outer end of subassembly of righting is extended through the perforating hole of corresponding position department respectively the outside of the main pipe of righting, the main pipe of righting the lateral wall install be used for adjusting the subassembly of righting the gyro wheel is adjusted soon.

Preferably, the gyro wheel righting subassembly includes that an activity cartridge is in corresponding position department adjust the pole in the through-hole, the middle section activity of adjusting the pole is cup jointed on the outside wall of the pivot that links firmly in the through-hole, the inner activity of adjusting the pole is cup jointed on the middle part outside wall of a roller shaft respectively fixed mounting has the interior gyro wheel of righting of a symmetry setting on the both ends outside wall of roller shaft, interior righting gyro wheel is used for with current well casing lateral wall looks butt, the outer end of adjusting the pole extends right the outside of being responsible for and with it cooperatees to transfer the subassembly soon.

Preferably, a guide ball is clamped in a concave cavity at the top of the outer end of each adjusting rod.

Preferably, the rotation adjusting assembly comprises an upper screwing solenoid and a lower screwing solenoid which are respectively arranged above and below each adjusting rod and on the upper thread section of the outer side wall of the centering main pipe, an upper annular mounting cavity is arranged at the bottom end face of the upper screwing solenoid, an upper adjusting spring sleeved on the outer side wall of the centering main pipe is arranged in the upper annular mounting cavity, the lower end of the upper adjusting spring is fixedly connected with an upper adjusting washer coaxially arranged on the outer side wall of the centering main pipe, the bottom of the upper adjusting washer is abutted against the top of each guide ball, a lower annular mounting cavity is arranged at the top end face of the lower screwing solenoid, a lower adjusting spring sleeved on the outer side wall of the centering main pipe is arranged in the lower annular mounting cavity, and the upper end of the lower adjusting spring is fixedly connected with a lower adjusting washer coaxially arranged on the outer side wall of the centering main pipe, the top of the lower adjusting washer is abutted against the bottom of each adjusting rod.

The beneficial effects of the utility model are embodied in: can cooperate to realize supporting tightly inserting sheathed tube effective righting according to the operating mode when actually going into the well, can realize the spring adjustment when righting, right the sleeve pipe of subassembly cooperation accent subassembly adaptation different external diameters soon through the gyro wheel, the wearing and tearing of effectual reduction righting in-process reduce the card when lifting the sleeve pipe and hinder the probability, improve the security of operation construction.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or components are generally identified by like reference numerals. In the drawings, elements or components are not necessarily drawn to scale.

Fig. 1 is a schematic view of the internal sectional structure of the utility model in use.

In the figure, 1, a sleeve; 2. Righting the main pipe; 3. a through hole; 4. Adjusting a rod; 5. A rotating shaft; 6. a roller shaft; 7. an inner centralizing roller; 8. a guide ball; 9. screwing the screw pipe tightly; 10. screwing down the screw tube tightly; 11. an upper annular mounting cavity; 12. an upper adjusting spring; 13. an upper adjusting washer; 14. a lower annular mounting cavity; 15. a lower adjustment spring; 16. a lower adjustment washer.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1, a roller centralizer device for oil drilling includes a main centralizer pipe 2 sleeved on an outer side wall of an existing well casing 1, a plurality of adjustable roller centralizer assemblies are uniformly arranged in the main centralizer pipe 2 at intervals along a circumferential direction of the main centralizer pipe, a through hole 3 is arranged on the main centralizer pipe 2 at a position corresponding to each roller centralizer assembly, an outer end of each roller centralizer assembly extends to an outer side of the main centralizer pipe 2 through the through hole 3 at the corresponding position, and a rotary adjustment assembly for adjusting the roller centralizer assemblies is mounted on the outer side wall of the main centralizer pipe 2.

The roller centralizing component is arranged to realize the basic centralizing and guiding function, and the underground casing 1 is supported, guided and centered in a rolling mode, so that the excessive abrasion in the centralizing process is reduced, and the service life of the equipment is prolonged; set the gyro wheel in this application and right the subassembly to the structure that can adjust, can realize independently adjusting according to different casing pipe 1's in the pit external diameter, adjust and can realize spacingly and reset through transferring the subassembly soon after accomplishing to the commonality when guaranteeing to use reduces the emergence of the card circumstances of hindering when lifting casing pipe 1, security when improving the use.

Preferably, the gyro wheel righting subassembly includes that a activity cartridge is in corresponding position department adjust pole 4 in the perforating hole 3, the middle section activity of adjusting pole 4 cup joints on the outside wall of the pivot 5 that links firmly in the perforating hole 3, the activity of adjusting the inner of pole 4 cup joints on the middle part outside wall of a roller shaft 6 respectively fixed mounting has the interior gyro wheel 7 of righting of a symmetry setting on the outside wall in the both ends of roller shaft 6, interior gyro wheel 7 of righting is used for with current casing 1 lateral wall looks butt of leaving the well, the outer end of adjusting pole 4 extends the outside of righting the person in charge 2 and with the subassembly of transferring cooperatees soon.

The inner centralizing rollers 7 which are uniformly distributed are abutted against the sleeve 1 at the corresponding position, so that the centralizing and abutting effects can be realized, the original sliding fit mode is replaced by the rolling of the rollers during relative motion, the friction force in the relative motion process is reduced, and the service life is prolonged; meanwhile, the inner centralizing rollers 7 can extend inwards through the rotation of the adjusting rods 4, so that the outer side walls of the sleeves 1 with different outer diameters are abutted tightly, and the universality is high.

Preferably, a guiding ball 8 is clamped in a concave cavity at the top of the outer end of each adjusting rod 4.

The relative friction force in the process of abutting movement can be reduced, and the smoothness of the relative movement is ensured.

Preferably, the rotation adjusting assembly comprises an upper rotation fastening screw tube 9 and a lower rotation fastening screw tube 10 which are respectively arranged on the upper thread section of the outer side wall of the main righting tube 2 above and below each adjusting rod 4, an upper annular mounting cavity 11 is arranged on the bottom end face of the upper rotation fastening screw tube 9, an upper adjusting spring 12 which is sleeved on the outer side wall of the main righting tube 2 is arranged in the upper annular mounting cavity 11, the lower end of the upper adjusting spring 12 is fixedly connected with an upper adjusting washer 13 which is coaxially arranged on the outer side wall of the main righting tube 2, the bottom of the upper adjusting washer 13 is abutted against the top of each guiding ball 8, a lower annular mounting cavity 14 is arranged on the top end face of the lower rotation fastening screw tube 10, a lower adjusting spring 15 which is sleeved on the outer side wall of the main righting tube 2 is arranged in the lower annular mounting cavity 14, the upper end of the lower adjusting spring 15 is fixedly connected with a lower adjusting washer 16 which is coaxially arranged on the outer side wall of the main righting tube 2, the top of the lower adjustment washer 16 abuts the bottom of each of the adjustment rods 4.

The purpose of the rotary adjusting component is mainly as follows: firstly, the positions of an upper screwing solenoid 9 and a lower screwing solenoid 10 can be adjusted in advance, so that the upper adjusting spring 12 and the lower adjusting spring 15 can be adjusted, the limitation of the upper movement limit position and the lower movement limit position of each adjusting rod 4 at the outer end of the whole roller centering assembly is determined, and the variable abutting outer diameter range of each inner centering roller 7 is further adjusted; second, the pre-compression of the upper and lower adjusting springs 12, 15 can be achieved by pre-adjustment.

When the sleeve 1 of different external diameters lifts, it is when contacting each interior righting gyro wheel 7, if the external diameter of present sleeve 1 is greater than the tight space of support that current each interior righting gyro wheel 7 formed, will make each regulation pole 4 atress on the interior righting gyro wheel 7 under the effect of lifting power this moment, thereby realize that it realizes rotatoryly, the spring of corresponding position department will be overcome to final each outer end of adjusting pole 4, thereby realize that each interior righting gyro wheel 7 moves to the outside, finally realize meeting current sleeve 1's external diameter, lift when accomplishing when current sleeve 1, will drive the action bars under the effect of the elasticity that resets of adjusting spring 15 and realize reseing in last adjusting spring 12, thereby drive each interior righting gyro wheel 7 and reset, thereby realize supporting tight to the sleeve 1 of different external diameters.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification; to those skilled in the art, any alternative improvements or changes made to the embodiments of the present invention are all within the scope of the present invention.

The parts of the present invention not described in detail are the known techniques of those skilled in the art.

Claims (4)

1. The utility model provides a roller centralizer device for oil drilling which characterized in that: the outer side wall of the centralizing main pipe is provided with a rotary adjusting component used for adjusting the roller centralizing component.

2. The roller centralizer device for oil drilling according to claim 1, wherein: the gyro wheel subassembly of righting includes that an activity cartridge is corresponding position department adjust the pole in the through-hole, the middle section activity of adjusting the pole is cup jointed on the outside wall of the pivot that links firmly in the through-hole, the inner activity of adjusting the pole is cup jointed on the middle part outside wall of a roller shaft respectively fixed mounting has the interior gyro wheel of righting that a symmetry set up on the both ends outside wall of roller shaft, interior gyro wheel of righting is used for with current well casing lateral wall looks butt of descending, the outer end of adjusting the pole extends right the outside of being responsible for and with it cooperatees to transfer the subassembly soon.

3. The roller centralizer device for oil drilling according to claim 2, wherein: and a guide ball is clamped in the concave cavity at the top of the outer end of each adjusting rod respectively.

4. The roller centralizer device for oil drilling according to claim 3, wherein: the rotary adjusting component comprises an upper spiral tightening solenoid and a lower spiral tightening solenoid which are respectively arranged above and below each adjusting rod and are provided with upper thread sections on the outer side wall of the centering main pipe, an upper annular mounting cavity is arranged on the bottom end face of the upper spiral tightening solenoid, an upper adjusting spring sleeved on the outer side wall of the centering main pipe is arranged in the upper annular mounting cavity, the lower end of the upper adjusting spring is fixedly connected with an upper adjusting washer coaxially arranged on the outer side wall of the centering main pipe, the bottom of the upper adjusting washer is abutted against the top of each guide ball, a lower annular mounting cavity is arranged on the top end face of the lower spiral tightening solenoid, a lower adjusting spring sleeved on the outer wall of the centering main pipe is arranged in the lower annular mounting cavity, and the upper end of the lower adjusting spring is fixedly connected with a lower adjusting washer coaxially arranged on the outer side wall of the centering main pipe, the top of the lower adjusting washer is abutted against the bottom of each adjusting rod.

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