CN111425157B - Hydraulic oscillation system - Google Patents
Hydraulic oscillation system Download PDFInfo
- Publication number
- CN111425157B CN111425157B CN202010368697.3A CN202010368697A CN111425157B CN 111425157 B CN111425157 B CN 111425157B CN 202010368697 A CN202010368697 A CN 202010368697A CN 111425157 B CN111425157 B CN 111425157B
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- cylinder
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- cam
- crankshaft
- connecting cylinder
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B28/00—Vibration generating arrangements for boreholes or wells, e.g. for stimulating production
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1428—Cylinders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
Abstract
The invention relates to a hydraulic oscillation system, which comprises an upper connecting cylinder, a piston, a crankshaft, a connecting rod and a balance flywheel, wherein a lower connecting cylinder is connected with the upper connecting cylinder to form an inner cylinder; the upper cylinder sleeve is connected with the lower cylinder sleeve in a sealing mode, the piston slides along the inner wall of the upper cylinder sleeve, the hemispherical head of the piston is in contact fit with the hemispherical overflowing port at the bottom of the upper connecting cylinder, the upper end of the connecting rod is connected with the piston, the lower end of the connecting rod is connected with the crankshaft, the crankshaft is located in the lower cylinder sleeve, balance flywheels are fixed at two ends of the crankshaft, outer edge shafts are fixed outside the balance flywheels, the outer edge shafts extend into radial holes of the lower cylinder sleeve and are connected with the cam shaft, the cam shaft penetrates out of the lower cylinder limiting hole and is located in an annular space, the cam shaft is provided with a cam, the push rod freely falls on the cam, and the annular wall spring freely falls on the push rod. The invention can generate stable axial vibration, improve the rock breaking efficiency of the drill bit and reduce the damage of the vibration to other parts.
Description
Technical Field
The invention relates to a drilling device applied to the fields of petroleum engineering, mining engineering, geotechnical engineering and the like, in particular to a hydraulic oscillation system.
Background
In order to meet the requirement of development of oil and gas exploration work, the current oil drilling work is mainly expanded to deep parts and complex blocks. Along with the development of each large oil field, the number of complex structure wells such as a highly deviated well, a horizontal well, a multi-branch horizontal well and the like is more and more, well bores are more and more irregular, the inclination angle of the well is large, and the friction between a drill string and a well wall in a sliding drilling mode is more and more large, so that the transmission efficiency of the drilling pressure is low, and the drilling speed and the extension capability are seriously restricted. In the process of drilling a deep well, the problems of high drilling difficulty and low drilling speed of a hard formation are very prominent. In order to meet the requirements of new drilling conditions or new oil and gas resources, corresponding new drilling methods and tools are also continuously developed. Therefore, the key problem of the petroleum industry at home and abroad is to improve the drilling speed.
At present, methods for generating radial vibration by using hydraulic power mainly comprise a turbine driving eccentric method and a screw motor method. The Chinese patent with publication number CN106761472B adopts a turbine to drive the eccentric mode; chinese utility model patent No. CN201883999U provides a multistage turbine eccentric type. The Chinese patent application with the publication number of CN105937378B adopts a scheme of a single-head screw motor; the proposal proposed by the Chinese invention patent with the publication number of CN102889067B adopts an eccentric wheel method and a screw motor method at the same time, and only the main part names of a multi-head motor are changed into a plum blossom rotor and a plum blossom stator.
The turbine driving eccentric method is simple and easy to realize, but the hydraulic pressure drop is large, mechanical friction and eddy loss exist, gaps among rotating parts are easy to block, the vibration impact momentum is limited, and synchronization cannot be guaranteed during multi-stage combination; the screw motor method has the advantages of high efficiency, large radial impact momentum and the like, but has high processing difficulty and high manufacturing cost.
Disclosure of Invention
The invention aims to provide a hydraulic oscillation system which is used for solving the problems of limited vibration impact momentum, large processing difficulty and high manufacturing cost existing in the conventional method for generating radial vibration by utilizing hydraulic power.
The technical scheme adopted by the invention for solving the technical problems is as follows: the hydraulic oscillation system comprises an upper connecting cylinder, a piston, an upper cylinder sleeve, a lower cylinder sleeve, a crankshaft, a connecting rod, a balance flywheel, an outer edge shaft, a camshaft, a cam, a push rod, a ring wall spring, an oscillation outer sleeve and a lower connecting cylinder, wherein the lower connecting cylinder is in threaded connection with the lower end of the upper connecting cylinder to form an inner cylinder; the upper cylinder sleeve is connected with the lower cylinder sleeve in a sealing mode, the piston slides along the inner wall of the upper cylinder sleeve, the hemispherical head of the piston is in contact fit with the hemispherical overflowing port at the bottom of the upper connecting cylinder, the piston is connected to the upper end of the connecting rod, the lower end of the connecting rod is connected with the crankshaft, the crankshaft is located in the lower cylinder sleeve, balance flywheels are fixed to the two ends of the crankshaft, outer edge shafts are fixed to the outer portions of the balance flywheels, the outer edge shafts extend into radial holes of the lower cylinder sleeve and are connected with the cam shafts, the cam shafts penetrate out of the lower cylinder limiting hole and are located in an annular space, each cam shaft is provided with a cam, the push rod is wound outside the lower cylinder sleeve and freely falls on the cam, and the annular wall spring freely falls on the push rod.
Connect a section of thick bamboo down in the above-mentioned scheme and connect a section of thick bamboo on with and pass through threaded connection, form inside confined system, go up and connect a section of thick bamboo bottom to be conical, conical waist has two current-limiting notches of even symmetry, and conical point portion forms the hemisphere overflow mouth of outside-in, and hemisphere overflow mouth and the cooperation of piston hemisphere head contact change the area of overflowing and form stable periodic continuous efflux.
In the scheme, the piston consists of a hemispherical head and a cylindrical structure, two sealing grooves are designed at the upper end of the cylindrical structure, the piston is connected with a small head at the upper part of the connecting rod through a piston pin, and a large head at the lower part of the connecting rod is connected with a crankshaft through a crankshaft pin; the balance flywheel is in a sector shape, and the longer part of a sector arc has concentrated mass and is used for storing energy.
In the scheme, the cam shaft is in threaded connection with the outer edge shaft, and the cam shaft is in threaded connection with the cam.
In the scheme, the push rod is L-shaped, so that the bottom of the push rod is matched with the cam conveniently, and the motion transmission is realized.
In the scheme, the top of the annular wall spring is fixedly connected with the inner wall of the oscillating outer sleeve, and the energy transmission efficiency is realized and the service life of the spring is protected outside an internal sealing system.
The invention has the following beneficial effects:
1. the invention is suitable for a novel high-efficiency hydraulic oscillation system in an ultra-low pressure fluid driving occasion, can generate stable axial vibration by the reciprocating motion of the piston and the balance flywheel combination, has high oscillation frequency and small vibration amplitude, and reduces the damage of the oscillation to other parts while improving the rock breaking efficiency of a drill bit.
2. The tool has simple structure, good smoothness of liquid flow in the cavity and high utilization rate of fluid and liquid energy; the working performance is stable, the system is a novel, stable, reliable and safe oscillation system, and the system is easy to use and popularize in oil fields.
3. The invention ensures the stable up-and-down reciprocating motion of the piston by the matching of the piston and the crankshaft connecting rod mechanism and the support of the balance flywheel, provides stable periodic change of the flow area, and naturally reduces the probability of failure.
4. The invention is connected with the drill bit, the generated high-frequency axial vibration and stable pulse jet flow can improve the depth of the teeth of the drill bit entering the rock, accelerate the speed of rock debris separating from the well bottom, improve the mechanical drilling speed and effectively reduce the drilling cost.
5. The invention has no electronic element and damageable workpiece, greatly reduces the times of tripping and drilling and improves the drilling efficiency.
6. The oscillation frequency of the invention can be changed by the design of the balance flywheel according to the drilling requirement, and the invention has wide application range, stronger flexibility and low requirement on the bit pressure.
7. The invention adopts cam transmission, better realizes high speed and is matched with high-frequency oscillation.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a front view of the upper adapter of the present invention.
Fig. 3 is a perspective view of the upper adapter of the present invention.
Fig. 4 is a bottom view of the upper adapter of the present invention.
Fig. 5 is a schematic view of a piston according to the present invention.
Fig. 6 is a perspective view of the connecting rod of the present invention.
Fig. 7 is a front view of the connecting rod of the present invention.
FIG. 8 is a perspective view of the balance flywheel, crankshaft, and peripheral shaft assembly of the present invention.
FIG. 9 is a front view of the balance flywheel, crankshaft, and peripheral shaft combination of the present invention.
Fig. 10 is a front view of the cam of the present invention.
Fig. 11 is a perspective view of the cam in the present invention.
FIG. 12 is a schematic seal of a lower adapter in the present invention.
In the figure: 1, connecting a cylinder; 2, a piston; 3, arranging a cylinder sleeve; 4, connecting rods; 5, a crankshaft; 6 balancing the flywheel; 7, a lower cylinder sleeve; 8, a circular wall spring; 9 push rods; 10 a peripheral shaft; 11 a camshaft; 12 cams; 13 oscillating the jacket; 14 lower connecting cylinders, 15 limit holes, 16 flow-limiting notches and 17 hemispherical flow-through ports.
Detailed Description
The invention is further described with reference to the accompanying drawings in which:
as shown in fig. 1, the hydraulic oscillation system comprises an upper connecting cylinder 1, a piston 2, an upper cylinder sleeve 3, a lower cylinder sleeve 7, a crankshaft 5, a connecting rod 4, a balance flywheel 6, an outer edge shaft 10, a camshaft 11, a cam 12, a push rod 9, a ring wall spring 8, an oscillation outer sleeve 13 and a lower connecting cylinder 14, wherein the lower connecting cylinder 14 is in threaded connection with the lower end of the upper connecting cylinder 1 to form an inner cylinder, an annular step is arranged outside the lower end of the lower connecting cylinder 14, the oscillation outer sleeve 13 surrounds the outer side of the inner cylinder and freely falls on the annular step, and the oscillation outer sleeve 13 is sleeved with the whole internal system; the oscillation overcoat 13 connects a section of thick bamboo 14 to form annular space under through the interior step that its upper portion set up, and the last port of oscillation overcoat 13 is located and connects a section of thick bamboo 1 outer edge below, and oscillation overcoat 13 encircles and connects a section of thick bamboo 1 outer wall last, can follow and connect a section of thick bamboo 1 to slide from top to bottom, goes up and connects a section of thick bamboo 1 outer edge and can restrict the ascending position of oscillation overcoat 13. The upper cylinder sleeve 3 is hermetically connected with the lower cylinder sleeve 7, the piston 2 slides along the inner wall of the upper cylinder sleeve 3, the hemispherical head of the piston is in contact fit with a hemispherical overflow port 17 at the bottom of the upper connecting cylinder 1, the upper end of the connecting rod 4 is connected with the piston 2, the lower end of the connecting rod 4 is connected with the crankshaft 5, the crankshaft 5 is positioned in the lower cylinder sleeve 7, two ends of the crankshaft 5 are fixedly provided with balance flywheels 6, outer edge shafts 10 are fixedly arranged outside the balance flywheels 6, the outer edge shafts 10 extend into radial holes of the lower cylinder sleeve and are connected with cam shafts 11, the cam shafts 11 penetrate out of a lower cylinder limiting hole 15 and are positioned in an annular space, each cam shaft 11 is provided with a cam 12, the push rod 9 surrounds the lower connecting cylinder 14 and freely falls on the cam 12, the annular wall spring 8 freely falls on the push rod 9, the top end of the annular wall spring 8 is fixedly connected with the oscillating outer sleeve 13, and is independent of an internal sealing system, so that the high efficiency of energy transfer is realized and the service life of the spring is protected; the middle lower part of the oscillating outer sleeve 13 is semi-hollow, provides working space for the cam 12, the push rod 9 and the annular wall spring 8 and protects parts.
The internal thread at the lower end of the upper connecting cylinder 1 is matched and connected with the external thread at the upper end of the lower connecting cylinder 14. The upper connecting cylinder 1 and the lower connecting cylinder 14 are both provided with limiting surfaces to ensure the up-and-down oscillating motion of the oscillating outer sleeve 13. The lower cylinder outer wall sets up the annular, and spacing hole 15 sets up in annular department, and lower cylinder jacket 7 is located lower connecting cylinder 14, highly suits with the annular, and spacing hole 15 sets up with lower cylinder jacket 7 radial hole is coaxial.
The bottom of the upper connecting cylinder 1 is conical, two flow-limiting notches 16 which are uniformly and symmetrically distributed are arranged at the conical waist part, the conical top part is an outside-in hemispherical overflow port 17, so that the conical top part is in contact fit with the hemispherical head of the piston, and the hemispherical top part of the piston 2 can be completely in contact with the hemispherical overflow port 17 at the bottom of the upper connecting cylinder 1 so as to be in contact fit with the hemispherical body of the piston to change the overflow area to form stable periodic continuous jet flow.
The upper cylinder sleeve 3 and the lower cylinder sleeve 7 fixedly connect the piston 2, the connecting rod 4, the crankshaft 5, the balance flywheel 6 and the outer edge shaft 10 in a space, so that the normal work and the service life of each part are ensured. The upper half part of the piston 2 is a hemisphere, and two sealing grooves are designed at the top end of the cylindrical structure of the lower half part, so that the sealing performance of the piston system is guaranteed. The piston 2 is connected with a small end at the upper part of the connecting rod through a piston pin, a large end at the lower part of the connecting rod is connected with a crankshaft through a crankpin, the outer edge shaft 10 is matched with the limiting hole 15 through a cam shaft 11, the cam shaft 11 is in threaded connection with the outer edge shaft 10, the cam shaft 11 is in threaded connection with the outer part of the limiting hole 15 through a threaded plug, and the cam shaft 11 is in threaded connection with the cam 12. The bottom end of the push rod 9 is in contact engagement with the cam 12.
The balance flywheel 6 is in a sector shape, and the longer part of the sector arc has concentrated mass and is used for storing energy. The balance flywheel 6, the outer edge shaft 10 and the crankshaft 5 are fixed together during operation, and the effectiveness of movement is guaranteed.
The push rod 9 is 'L' shaped, which facilitates the cooperation of the bottom part and the cam 12 to realize the transmission of motion.
The working process of the invention is as follows:
fluid enters the oscillator from the upper part of the upper connecting cylinder 1, passes through the conical flow-limiting notch 16 and the hemispherical overflow port 17, impacts the piston 2 to move downwards, the piston 2 leaves the hemispherical overflow port 17 of the upper connecting cylinder 1, and the flow area of the fluid is increased; meanwhile, the piston 2 is transmitted to the crankshaft 5 through the connecting rod 4 to drive the balance flywheel 6 and the outer edge shaft 10 to rotate, and the balance flywheel 6 stores energy; the outer edge shaft 10 rotates to drive the cam 12 to rotate through the cam shaft 11, the cam 12 rotates to push the push rod 9 to move upwards, the annular wall spring 8 is compressed, and the annular wall spring 8 stores energy and drives the oscillating outer sleeve 13 to move upwards. When the piston 2 moves to the bottommost part, the cam 12 rotates 180 degrees, and the oscillating outer sleeve 13 drives the kinetic energy and the potential energy of the annular wall spring 8 to move to the limiting surface of the upper connecting cylinder; at the moment, the energy storage of the balance flywheel 6 drives the crankshaft 5 to rotate, the piston 2 is pushed to move upwards through the connecting rod 4 and the hemispherical overflowing opening 17 of the upper connecting cylinder 1 is sealed, and the flowing area of the fluid is reduced. When the balance flywheel 6 drives the piston 2 to move upwards, the cam 12 is driven to rotate through the outer edge shaft 10 and the cam shaft 11, at the moment, the annular wall spring 8 releases stored energy to push the push rod 9 to move downwards, the cam shaft 11 rotates 180 degrees again, the piston 2 rises to the highest position to be completely contacted with the hemispherical overflowing port 17 of the upper connecting cylinder 1, the kinetic energy of the oscillation outer sleeve 13 and the energy released by the annular wall spring 8 move to the limiting surface of the lower connecting cylinder 14 to realize oscillation, and a movement period is completed.
According to the invention, the up-and-down reciprocating motion of the piston 2 periodically changes the flow area of the fluid, so that stable pulse jet flow is realized.
The invention balances the movement of the flying disc 6, the crankshaft 5 and the connecting rod 4, and realizes the mutually-promoted working state with the movement of the cam 12, the push rod 9 and the annular wall spring 8 through the camshaft 11 and the outer edge shaft 10.
Claims (6)
1. A hydro-oscillating system characterized by: the hydraulic oscillation system comprises an upper connecting cylinder (1), a piston (2), an upper cylinder sleeve (3), a lower cylinder sleeve (7), a crankshaft (5), a connecting rod (4), a balance flywheel (6), an outer edge shaft (10), a camshaft (11), a cam (12), a push rod (9), a ring wall spring (8), an oscillation outer sleeve (13) and a lower connecting cylinder (14), wherein the lower connecting cylinder (14) is in threaded connection with the lower end of the upper connecting cylinder (1) to form an inner cylinder, an annular step is arranged outside the lower end of the lower connecting cylinder (14), the oscillation outer sleeve (13) surrounds the outer part of the inner cylinder and freely falls on the annular step, an annular space is formed by the oscillation outer sleeve (13) and the lower connecting cylinder (14), and the upper port of the oscillation outer sleeve (13) is positioned below the outer edge of the upper connecting cylinder (1); go up cylinder liner (3) and cylinder liner (7) sealing connection down, piston (2) slide along last cylinder liner (3) inner wall, piston hemisphere head and the hemisphere of last connecting cylinder bottom overflow mouth (17) contact cooperation, piston (2) are connected to connecting rod (4) upper end, connecting rod (4) lower extreme connection bent axle (5), bent axle (5) are located cylinder liner (7) down, bent axle (5) both ends fixed balance flywheel (6), outer fringe axle (10) all is fixed outward to balance flywheel (6), outer fringe axle (10) all stretch into down cylinder liner radial hole and are connected with camshaft (11), camshaft (11) are all worn out and are located annular space from lower connecting cylinder spacing hole (15), cam (12) are all installed in every camshaft (11), push rod (9) encircle and connect cylinder (14) outward and freely fall on cam (12) down, rampart spring (8) freely fall on push rod (9).
2. The hydrostatically oscillating system of claim 1, wherein: connect a section of thick bamboo (14) down with connect a section of thick bamboo (1) on through threaded connection, go up to connect a section of thick bamboo bottom to be conical, conical waist has two current-limiting notch (16) of even symmetry, conical point portion forms hemisphere overflow mouth (17) of outside-in, hemisphere overflow mouth (17) and the cooperation of piston hemisphere head contact change the area of overflowing and form stable periodic continuous efflux.
3. The hydrostatically oscillating system of claim 2, wherein: the piston (2) is composed of a hemispherical head and a cylindrical structure, two sealing grooves are designed at the upper end of the cylindrical structure, the piston (2) is connected with a small head at the upper part of the connecting rod through a piston pin, and a large head at the lower part of the connecting rod (4) is connected with a crankshaft (5) through a crankshaft pin; the balance flywheel (6) is in a sector shape, and the longer part of the sector arc has concentrated mass.
4. A hydroscillator system as in claim 3 wherein: the camshaft (11) is in threaded connection with the outer edge shaft (10), and the camshaft (11) is in threaded connection with the cam (12).
5. The hydrostatically oscillating system of claim 4, wherein: the push rod (9) is L-shaped, and the bottom of the push rod is matched with the cam (12) to realize the transmission of motion.
6. The hydrostatically oscillating system of claim 5, wherein: the top of the annular wall spring (8) is fixedly connected with the inner wall of the oscillating outer sleeve (13).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010368697.3A CN111425157B (en) | 2020-05-02 | 2020-05-02 | Hydraulic oscillation system |
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| CN202010368697.3A CN111425157B (en) | 2020-05-02 | 2020-05-02 | Hydraulic oscillation system |
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| CN111425157A CN111425157A (en) | 2020-07-17 |
| CN111425157B true CN111425157B (en) | 2021-11-19 |
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| CN113513267B (en) * | 2021-09-06 | 2022-07-19 | 东北石油大学 | Simple hydraulic oscillation tool |
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