CN216240402U

CN216240402U - Hydraulic composite vibration impactor

Info

Publication number: CN216240402U
Application number: CN202121814734.5U
Authority: CN
Inventors: 陈小元; 樊继强; 严忠; 王委; 纪照生; 谷子昂
Original assignee: Sinopec Oilfield Service Corp; Sinopec East China Petroleum Engineering Corp
Current assignee: Sinopec Oilfield Service Corp; Sinopec East China Petroleum Engineering Corp
Priority date: 2021-08-05
Filing date: 2021-08-05
Publication date: 2022-04-08
Anticipated expiration: 2031-08-05

Abstract

The utility model relates to a hydraulic composite vibration impactor, which comprises an outer cylinder body, wherein a core pipe is arranged in an inner cavity of the outer cylinder body, the top of the core pipe is supported at the center of an upper centralizer, overflowing holes are uniformly distributed on the circumference of the upper centralizer, core pipe water inlet holes are uniformly distributed on the circumference of the upper part of the core pipe, core pipe water outlet holes are uniformly distributed on the circumference of the lower part of the core pipe, the lower end of the core pipe is connected with a movable disc valve, a static disc valve is arranged below the movable disc valve, fan-shaped hammers are symmetrically arranged at the center of the periphery of the middle section of the core pipe, the fan-shaped hammers are positioned in fan-shaped cavities of a hammering block, hydraulic cavities are formed at the parts of the fan-shaped cavities, which are larger than the fan-shaped hammers, and vertical seams are arranged on the core pipe and communicated with corresponding hydraulic cavities; a spring seat is fixed above the anvil, the top of the spring seat is positioned below the water inlet hole of the core pipe, and a torsion spring connected with the core pipe is installed in the inner cavity of the spring seat. The hydraulic composite vibration impactor can fully utilize hydraulic energy, so that the drill bit can generate longitudinal vibration and circumferential torque while rotating to work, and the rock breaking efficiency is improved.

Description

Hydraulic composite vibration impactor

Technical Field

The utility model relates to a high-efficiency rock breaking tool suitable for medium-hard to hard strata, in particular to a hydraulic composite vibration impactor, and belongs to the technical field of petroleum drilling equipment.

Background

Under the promotion of two factors of increasingly deficient petroleum resources and rapidly increased demand, the exploration and development of new areas are continuously expanded, and as petroleum exploration is continuously developed to deep wells and ultra-deep wells, more and more formations with medium and hard drilling and abrasive formations are developed.

The depth of an oil production well is continuously deepened, drilling is more and more complex in stratum, power loss along the way is large, the pressure holding effect of a liquid column on the bottom of the well is obvious, the drilling speed is low, tools are easy to damage, the drilling period is prolonged, the drilling cost is high, and the development process of an oil-gas field is severely restricted. Therefore, the increase of the drilling speed of deep wells and ultra-deep wells is an urgent need of various oil fields at home and abroad at present.

The vibration impact drilling technology is a new drilling technology developed on the basis of conventional rotary drilling, and a vibration impactor is connected above a drill bit. In the working process, the impacter can generate longitudinal periodic impact load, then the load is acted on the stratum through the drill bit, the effect of crushing rock under the combined action of the impact load and static pressure rotation is achieved, and the periodic impact load generated under the action of the vibration impacter is acted on the stratum rock through the drill bit, so that the rock is crushed in volume, and the drilling speed is greatly improved. In addition, the vibration impactor generates high-frequency impact to the drill bit periodically during working, and stick-slip vibration which may be generated during the working of the drill bit can be reduced or eliminated. Thus, on one hand, the mechanical drilling speed can be improved; on the other hand, the drill bit is protected to a certain extent, the service life of the drill bit is prolonged, and the times of tripping the drill bit are reduced, so that the cost of petroleum drilling is reduced.

Currently, various impactors are the main downhole power tools for increasing the mechanical drilling speed of deep wells. However, the conventional impacter applied to the field in China often forms vulnerable and weak parts due to more connecting and moving parts, and has the problem of short service life. Meanwhile, most of the drill bits applied to the medium-deep well are PDC drill bits, and the PDC drill bits often fail prematurely due to stick-slip vibration generated during rock breaking. Therefore, the development of new tools is imminent.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the problems in the prior art and provide a hydraulic composite vibration impactor which can fully utilize hydraulic energy, so that a drill bit can generate longitudinal vibration and circumferential torque while rotating to work, and the rock breaking efficiency is improved.

In order to solve the technical problems, the hydraulic composite vibration impactor comprises an outer cylinder body, wherein a core pipe is arranged in an inner cavity of the outer cylinder body, the top of the core pipe is supported at the center of an upper centralizer, overflowing holes are uniformly distributed on the circumference of the upper centralizer, core pipe water inlet holes are uniformly distributed on the circumference of the upper part of the core pipe, core pipe water outlet holes are uniformly distributed on the circumference of the lower part of the core pipe, a movable disc valve is connected to the lower end of the core pipe, a static disc valve is arranged below the movable disc valve, fan-shaped hammers are symmetrically arranged on the center of the periphery of the middle section of the core pipe and are positioned in fan-shaped cavities of an anvil, hydraulic cavities are formed in the parts, larger than the fan-shaped hammers, of the fan-shaped cavities, and vertical seams are arranged on the core pipe and communicated with the corresponding hydraulic cavities; a spring seat is fixed above the anvil, the top of the spring seat is positioned below the core pipe water inlet hole, and a torsion spring connected with the core pipe is installed in an inner cavity of the spring seat.

As an improvement of the utility model, the periphery of the lower part of the anvil is screwed in the upper port of the hexagonal sleeve, the external thread of the middle section of the hexagonal sleeve is screwed with the internal thread of the lower port of the outer cylinder, and the internal hexagonal port at the lower end of the hexagonal sleeve is sleeved on the hexagonal tenon at the middle section of the lower joint.

As a further improvement of the utility model, the static disc valve is fixed on a first inner shoulder at the upper part of the hexagonal sleeve, an inner cover is arranged below the static disc valve, the inner cover is positioned in an inner cavity of the hexagonal sleeve, the lower port of the inner cover is pressed on a second inner shoulder at the upper part of the hexagonal sleeve, and the upper end of the lower joint is screwed in the inner cover.

As a further improvement of the utility model, the upper centralizer is fixed below the conical internal thread on the upper part of the outer cylinder body.

As a further improvement of the utility model, moving disc fan-shaped overflow slots are uniformly arranged among the blades of the moving disc valve, one blade of the moving disc valve is provided with a pressure-holding-preventing hole, and static disc fan-shaped overflow slots are uniformly arranged among the blades of the static disc valve.

Compared with the prior art, the utility model has the following beneficial effects: the torsional impact generating device has the advantages of being strong in rotating capacity, obvious in torsional impact generating effect and capable of generating good circumferential torque and longitudinal vibration on a drill bit.

The drill bit applies additional impact rock breaking energy, and the condition that the rock breaking energy of the drill bit at the bottom of the well is insufficient is improved, so that the problem of clamping and sliding inherent to the PDC drill bit is solved, the service life of the drill bit is prolonged, and the drilling time efficiency is improved.

The tool is simple in structure, easy to implement, short in length, low in cost, capable of reducing unnecessary energy loss, capable of improving the utilization efficiency of the hydraulic impact power and convenient to popularize and apply in an oil field.

The tool is free of a rubber part and an electronic part, and has more advantages in a high-temperature deep well; the structure is designed uniquely, even if the service life is prolonged and the work is stopped, the drill collar is just equivalent to a section of short drill collar, and the drill can still continue to drill as required without being started immediately; and the overall structure design is adopted, so that the risks such as well falling and tripping are avoided.

Drawings

FIG. 1 is a front view of a hydraulic compound vibratory impactor of the utility model.

FIG. 2 is a perspective view of the hydraulic compound vibratory impactor of the present invention.

FIG. 3 is an enlarged view of the core tube and anvil portion of the present invention.

Fig. 4 is a cross-sectional view taken along a-a in fig. 3.

Fig. 5 is an enlarged perspective view of the anvil of the present invention.

Fig. 6 is an enlarged perspective view of the core tube of the present invention.

In the figure: 1. an outer cylinder; 2. an upper centralizer; 3. a core tube; 3a, a water inlet hole of the core pipe; 3b, a fan-shaped ram; 3c, vertically sewing; 3d, water outlet holes of the core pipes; 4. a spring seat; 5. a torsion spring; 6. an anvil; 6a. sector cavity; 7. a movable disk valve; 7a, preventing the pressure from being held; 8. a static disc valve; 9. a hexagonal sleeve; 9a, middle section external threads; 9b, an internal hexagonal port; 10. an inner cover; 11. a lower joint; hexagonal tenon 11a.

Detailed Description

As shown in fig. 1 to 6, the hydraulic composite vibration impactor of the utility model comprises an outer cylinder 1, wherein an inner cavity of the outer cylinder 1 is provided with a core tube 3, the top of the core tube 3 is supported at the center of an upper centralizer 2, the upper centralizer 2 is fixed below a conical internal thread at the upper part of the outer cylinder 1, overflowing holes are uniformly distributed on the circumference of the upper centralizer 2, core tube water inlet holes 3a are uniformly distributed on the circumference of the upper part of the core tube 3, core tube water outlet holes 3d are uniformly distributed on the circumference of the lower part of the core tube 3, the lower end of the core tube 3 is connected with a movable disc valve 7, a static disc valve 8 is arranged below the movable disc valve 7, a fan-shaped ram 3b is symmetrically arranged at the center of the middle section of the core tube 3, the fan-shaped ram 3b is positioned in a fan-shaped cavity 6a of an anvil 6, a part of the fan-shaped cavity 6a, which is larger than the fan-shaped ram 3b, forms a hydraulic cavity, and a vertical seam 3c is arranged on the core tube 3 and is communicated with the corresponding hydraulic cavity; a spring seat 4 is fixed above the anvil 6, the top of the spring seat 4 is positioned below the core pipe water inlet hole 3a, and a torsion spring 5 connected with the core pipe 3 is installed in the inner cavity of the spring seat 4.

The periphery of the lower part of the anvil 6 is screwed in the upper port of the hexagonal sleeve 9, the middle section external thread 9a of the hexagonal sleeve 9 is screwed with the internal thread of the lower port of the outer cylinder 1, and the internal hexagonal port 9b at the lower end of the hexagonal sleeve 9 is sleeved on the hexagonal tenon 11a at the middle section of the lower joint 11.

The static disc valve 8 is fixed on a first inner circular bead on the upper portion of the hexagonal sleeve 9, an inner cover 10 is arranged below the static disc valve 8, the inner cover 10 is located in an inner cavity of the hexagonal sleeve 9, a lower port of the inner cover 10 is pressed on a second inner circular bead on the upper portion of the hexagonal sleeve 9, and the upper end of the lower connector 11 is screwed in the inner cover 10.

Evenly be equipped with the fan-shaped chute of moving disk between the blade of moving disk valve 7, and be equipped with on the blade of moving disk valve 7 and prevent suppressing pressure hole 7a, evenly be equipped with the fan-shaped chute of quiet dish between the blade of quiet dish valve 8.

The water flow passes through the centralizer overflowing hole of the upper centralizer 2 and enters the inner cavity of the core pipe 3 from the core pipe water inlet hole 3a, when the overflowing area of the movable disc valve 7 and the static disc valve 8 is small, pressure building is generated, the water flow enters the hydraulic cavity of the anvil 6 from the vertical seam 3c of the core pipe 3, the fan-shaped hammer 3b of the core pipe 3 is pushed to rotate, and the upper end of the core pipe 3 drives the torsion spring 5 to twist and store energy; the lower end of the core pipe 3 drives the movable disc valve 7 to rotate, when the movable disc valve 7 and the static disc valve 8 are completely unobstructed, the hydraulic cavity discharges through the vertical seam 3c of the core pipe 3 and the water outlet hole 3d of the core pipe, and the torsion spring 5 releases energy, so that the fan-shaped hammer 3b of the core pipe 3 impacts the anvil 6 to generate torsional impact. The core tube 3 has strong rotation capability, generates obvious torsional impact effect and can generate good circumferential torque at the drill bit. An inner hexagonal opening 9b at the lower end of the hexagonal sleeve 9 is matched with a hexagonal tenon 11a of the lower joint 11, so that the torque can be transmitted more reliably; the inner cover 10 achieves axial positioning of the lower joint 11.

The movable disc valve 7 rotates to change the flow area of the static disc valve 8, so that hydraulic fluctuation is generated and acts on the lower joint 11 to generate longitudinal vibration. The longitudinal vibration frequency and amplitude can be adjusted by changing the shape of the blade of the disc valve, and a better acceleration effect is obtained.

The high-frequency impact generated by the tool applies additional impact rock breaking energy to the drill bit on the basis that the drill string transmits the constant torque to the drill bit, and the condition that the rock breaking energy of the drill bit is insufficient at the bottom of the well is improved, so that the inherent clamping and sliding problem of the PDC drill bit is relieved, the service life of the drill bit is prolonged, and the drilling time efficiency is improved. The shaft-torsion coupling dual function can reduce the pressure supporting phenomenon of the drill bit at the long horizontal section, has the functions of reducing friction and resistance, effectively weakens the stick-slip effect and improves the mechanical drilling speed.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention. In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention. Technical features of the present invention which are not described may be implemented by or using the prior art, and will not be described herein.

Claims

1. The utility model provides a compound vibration impacter of water conservancy, includes outer barrel, its characterized in that: the inner cavity of the outer barrel is provided with a core pipe, the top of the core pipe is supported at the center of an upper centralizer, overflowing holes are uniformly distributed on the circumference of the upper centralizer, core pipe water inlet holes are uniformly distributed on the circumference of the upper part of the core pipe, core pipe water outlet holes are uniformly distributed on the circumference of the lower part of the core pipe, the lower end of the core pipe is connected with a movable disc valve, a static disc valve is arranged below the movable disc valve, fan-shaped hammers are symmetrically arranged at the center of the middle section of the core pipe, the fan-shaped hammers are positioned in a fan-shaped cavity of an anvil, a hydraulic cavity is formed at the part of the fan-shaped cavity, which is larger than the fan-shaped hammers, and a vertical seam is arranged on the core pipe and communicated with the corresponding hydraulic cavity; a spring seat is fixed above the anvil, the top of the spring seat is positioned below the core pipe water inlet hole, and a torsion spring connected with the core pipe is installed in an inner cavity of the spring seat.

2. The hydraulic compound vibratory impactor of claim 1, wherein: the periphery of the lower part of the anvil is screwed in an upper port of the hexagonal sleeve, the external threads of the middle section of the hexagonal sleeve are screwed with the internal threads of the lower port of the outer cylinder, and the internal hexagonal port at the lower end of the hexagonal sleeve is sleeved on the hexagonal tenon at the middle section of the lower joint.

3. The hydraulic compound vibratory impactor of claim 1, wherein: the static disc valve is fixed on a first inner circular bead on the upper portion of the hexagonal sleeve, an inner cover is arranged below the static disc valve and located in an inner cavity of the hexagonal sleeve, a lower port of the inner cover is pressed on a second inner circular bead on the upper portion of the hexagonal sleeve, and the upper end of the lower connector is screwed in the inner cover.

4. The hydraulic compound vibratory impactor of claim 1, wherein: the upper centralizer is fixed below the conical internal thread on the upper part of the outer cylinder body.

5. The hydraulic compound vibratory impactor of any one of claims 1 to 4, wherein: evenly be equipped with the fan-shaped chute of moving disk between the blade of moving disk valve, and be equipped with on the blade of moving disk valve and prevent suppressing the pressure hole, evenly be equipped with the fan-shaped chute of quiet dish between the blade of quiet dish valve.