Turbine type hydraulic oscillation resistance reducing device

Abstract

The utility model discloses a turbo type hydraulic oscillation resistance reducing device which comprises an oscillation connector and an upper connector shell, and the oscillation connector penetrates through the interior of the upper connector shell through a spline. The front end of the oscillation connector is connected with the disc spring set in a hole-shaft clearance fit mode, and the front end of the oscillation connector is in threaded connection with the sealing fixing sleeve. And the middle shell is connected with the turbine pup joint shell through threads. According to the turbo-type hydraulic oscillation resistance reduction device, power is provided through the turbine rotor, high-frequency vibration is generated to drive an underground drilling tool to vibrate and wriggle, the directional drilling efficiency can be effectively improved, the turbo-type hydraulic oscillation resistance reduction device has the advantages of being high in drilling speed and low in pressure consumption, and compared with a screw hydraulic oscillator, the turbo-type hydraulic oscillation resistance reduction device does not contain rubber parts and is not prone to damage. The drilling fluid has good applicability to oil-based drilling fluid and water-based drilling fluid, and can be applied to drilling operation under severe working conditions of high temperature, high pressure and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to the drilling related technical field, concretely is a turbine type water power oscillation drag reducer. BACKGROUND

[0002] The water power oscillator on the market, when the drilling fluid passes through the power sub, the driving screw rotates, and the drilling fluid enters the axial flow channel along the screw axis through the flow guide structure, the screw end flow hole and the eccentric flow hole of the fixed valve disc are closely matched, according to the motion characteristics of the single-head screw, the reciprocating rotation of the screw shaft end will make the flow area formed by the screw end flow hole and the eccentric flow hole of the fixed valve change periodically, thereby causing the pressure at the valve port to change periodically, forming a pressure pulse, converting the static friction between the downhole drilling tool and the well wall into dynamic friction, thereby achieving the purpose of reducing friction and increasing speed.

[0003] Although there are many types of existing water power oscillators, there are still some deficiencies in the process of use, and the friction is large when drilling in a horizontal well with large displacement, and the bottom dragging phenomenon is easy to occur, causing high drilling pressure and low drilling speed, increasing the drilling cost and drilling time, in order to solve the above defects, the water power oscillator disclosed in the prior art (Chinese patent with application number CN201620145364.3 and publication date August 17, 2016) can effectively improve the friction between the drill string and the well wall, has the characteristics of pressure reduction, strong adaptability, does not affect the drill tool structure, etc. It has important significance for improving drilling speed and reducing cost.

[0004] Although the above-mentioned water power oscillator can solve the problem of high drilling pressure and low drilling speed, the existing water power oscillator is made of rubber material, which is greatly affected by the acid and alkalinity of the drilling fluid and the content of solid particles, and is easy to wear, resulting in short service life and unable to be applied to drilling operations in harsh conditions such as high temperature and high pressure.

[0005] Therefore, we propose a turbine type water power oscillation drag reducer to solve the above problems. CONTENT OF THE UTILITY MODEL

[0006] The utility model aims at providing a turbine type water power oscillation drag reducer to solve the problem that the water power oscillator on the market is made of rubber material, which is greatly affected by the acid and alkalinity of the drilling fluid and the content of solid particles, and is easy to wear, resulting in short service life and unable to be applied to drilling operations in harsh conditions such as high temperature and high pressure.

[0007] In order to achieve the above object, the utility model provides the following technical scheme: a turbine type hydraulic oscillation drag reducer, including oscillation joint and upper joint shell, the oscillation joint passes through the inside of upper joint shell through the spline, the front end position of oscillation joint is connected with disc spring group through hole shaft clearance fit, the front end position of oscillation joint is the threaded connection between sealing fixed sleeve, the upper joint shell is connected with intermediate shell through thread, the inside of intermediate shell is placed with guide stator turbine through hole shaft clearance fit, the inside of guide stator turbine is provided with turbine rotor and transmission main shaft, the turbine rotor is connected with transmission main shaft through hole shaft transition fit, the inside hole position of turbine short joint shell is passed through hole shaft clearance fit, and the intermediate shell is connected between turbine short joint shell through thread.

[0008] As the preferred technical scheme of the application, a notch is formed in the transmission main shaft, and the front end of the transmission main shaft is connected with the adapter through a threaded connection.

[0009] As the preferred technical scheme of the application, the adapter is tightly connected with the movable valve disc.

[0010] As the preferred technical scheme of the application, the turbine short joint shell is connected with the outer side of the lower joint shell through a threaded connection, and the inside of the lower joint shell is fixed to the outer side of the fixed valve disc through a key groove.

[0011] As the preferred technical scheme of the application, the disc spring group is arranged at an equal angle about the center position of the oscillation joint, one end of the disc spring group is attached to the inside of the oscillation joint, and the other end of the disc spring group is fixed to the side position of the sealing fixed sleeve.

[0012] Compared with the prior art, the turbine type hydraulic oscillation drag reducer has the following advantages: the turbine type hydraulic oscillation drag reducer provides power through the turbine rotor, generates high-frequency vibration to drive the downhole drilling tool to vibrate and peristalsis, effectively improves the directional drilling efficiency, has the characteristics of high drilling speed and low pressure consumption, does not contain rubber parts, has good applicability to oil-based drilling fluid and water-based drilling fluid, and can be applied to drilling operations in harsh conditions such as high temperature and high pressure.

[0013] 1. A power system is provided, which provides power through the power system, generates high-frequency vibration to drive the downhole drilling tool to vibrate and peristalsis, effectively improves the directional drilling efficiency, and has the characteristics of high drilling speed and low pressure consumption.

[0014] 2. A turbine group is provided, and since the tool does not contain rubber parts, it has good applicability to oil-based drilling fluid and water-based drilling fluid, and can be applied to drilling operations in harsh conditions such as high temperature and high pressure.

[0015] 3. Set the flow distribution valve system, through the flow hole between the dynamic valve disc and the fixed valve disc periodic coincidence, change the turbine hydraulic oscillator flow passage flow area to realize the periodic pressure of the tool. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a front view structural schematic diagram of the utility model;

[0017] Figure 2 It is a front view structural schematic diagram of the utility model Figure 1 It is a section structure schematic diagram of A-A of the utility model;

[0018] Figure 3 It is a disc spring group compression state schematic diagram of the utility model;

[0019] Figure 4 It is a disc spring group reset state schematic diagram of the utility model;

[0020] Figure 5 It is a dynamic valve disc and fixed valve disc different angle coincidence schematic diagram of the utility model.

[0021] In the drawing: 1, oscillation joint; 2, upper joint shell; 3, disc spring group; 4, sealing fixed sleeve; 5, middle shell; 6, guide flow stator turbine; 7, turbine rotor; 8, transmission main shaft; 9, turbine short joint shell; 10, adapter; 11, dynamic valve disc; 12, fixed valve disc; 13, lower joint shell. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] Please refer to Figures 1-5 The utility model provides the following technical solutions:

[0024] Embodiment one

[0025] In order to solve the problem that the hydraulic oscillator on the market is affected greatly by drilling fluid acidity and alkalinity and solid particle content due to the rubber material of the screw rotor, is easy to wear, and has a short service life, which cannot be applied to drilling operations in harsh conditions such as high temperature and high pressure, please refer to the attached Figure 1 -attached Figure 2, including oscillation joint 1 and upper joint shell 2, oscillation joint 1 passes through the inside of upper joint shell 2 through the spline; the front end position of oscillation joint 1 is connected with disc spring group 3 through hole shaft gap fit, and the front end position of oscillation joint 1 is screw connected with sealing fixed sleeve 4; upper joint shell 2 and intermediate shell 5 are connected with each other through threads, the inside of intermediate shell 5 is placed with flow guide stator turbine 6 through hole shaft gap fit, the inside of flow guide stator turbine 6 is provided with turbine rotor 7 and transmission main shaft 8, turbine rotor 7 and transmission main shaft 8 are connected through hole shaft transition fit, transmission main shaft 8 passes through the inside hole position of turbine short joint shell 9 through hole shaft gap fit, intermediate shell 5 is connected with turbine short joint shell 9 through threads; the notch is formed in transmission main shaft 8, the front end position of transmission main shaft 8 is screw connected with adapter 10; transmission main shaft 8 and adapter 10 are connected through threads, and are tightly connected with movable valve disc 11.

[0026] Turbine type hydraulic oscillation drag reducer is combined by oscillation system, power system and flow distribution valve system, wherein oscillation joint 1, upper joint shell 2, disc spring group 3, sealing fixed sleeve 4 are called as oscillation system, wherein turbine group includes intermediate shell 5, flow guide stator turbine 6, turbine rotor 7, transmission main shaft 8, turbine short joint shell 9, and is called as power system, adapter 10, movable valve disc 11, fixed valve disc 12 and lower joint shell 13 are called as flow distribution valve system, turbine type hydraulic oscillation drag reducer is a kind of hydraulic oscillator powered by turbine, turbine type hydraulic oscillation drag reducer provides power through power system, generates high-frequency vibration to drive downhole drilling tool to vibrate and peristalsis, can effectively improve directional drilling efficiency, has the characteristics of high drilling speed and low pressure consumption, compared with screw hydraulic oscillator, turbine type hydraulic oscillation drag reducer does not contain rubber parts, has good applicability to oil-based drilling fluid and water-based drilling fluid, and can be applied to drilling operations in harsh conditions such as high temperature and high pressure.

[0027] Example two

[0028] In order to improve the efficiency of directional drilling, please refer to the attached Figure 3 -attached Figure 5 Turbine short joint shell 9 is connected with the outside of lower joint shell 13 through threads, and the inside of lower joint shell 13 is fixed on the outside of fixed valve disc 12 through key groove; disc spring group 3 is provided with two groups at equal angles about the center position of oscillation joint 1, one end of disc spring group 3 is attached to the inside position of oscillation joint 1, and the other end position of disc spring group 3 is fixed to the side position of sealing fixed sleeve 4.

[0029] The drilling fluid flows into the tool interior through the oscillating joint 1 and the upper joint shell 2, flows through the flow guide stator turbine 6 and the turbine rotor 7, and flows into the transmission main shaft 8 interior through the notch opened by the turbine short joint shell 9 step under the guidance of the turbine short joint shell 9, the drilling fluid drives the turbine to rotate, the turbine drives the transmission main shaft 8 and the rotary joint 10 connected to the lower end of the transmission main shaft 8 to rotate, the rotary joint 10 drives the movable valve disc 11 to rotate, the movable valve disc 11 and the fixed valve disc 12 are periodically eccentrically coincided through the through hole, the through area of the turbine hydraulic oscillator flow passage is changed to realize the periodic pressure build-up and pressure relief in the tool interior; the through holes of the movable valve disc 11 and the fixed valve disc 12 are staggered, the pressure in the tool interior is built up, the piston mechanism of the oscillating joint 1 assembled with the disc spring set 3 is compressed, for details, please refer to Figure 3 ; the through holes of the movable valve disc 11 and the fixed valve disc 12 are coincided, the pressure in the tool interior is released, the oscillating joint 1 is reset under the action of the compressed disc spring set 3, and drives the drilling tool connected to the upper part of the oscillating joint 1 to impact and oscillate once, for details, please refer to Figure 4 ; the movable valve disc 11 and the lower joint shell 13 are high-speed rotated to complete the high-frequency low-amplitude axial impact oscillation of the whole tool, the static friction between the original downhole drilling tool and the well wall is changed into dynamic friction, the "peristalsis" effect is generated, and the function of the turbine hydraulic oscillator to reduce the friction and resistance of the downhole tool is realized; the turbine type hydraulic oscillation resistance reducer provides power through the turbine, generates high-frequency vibration to drive the downhole drilling tool to vibrate and peristalsis, and can effectively improve the directional drilling efficiency; in addition, the area of the eccentric holes of the movable valve disc 11 and the fixed valve disc 12 at different angles is periodically coincided through the through hole between the movable valve disc 11 and the fixed valve disc 12, the through area of the turbine hydraulic oscillator flow passage is changed to realize the periodic pressure build-up and pressure relief in the tool interior; as known from Figure 5 , when the eccentric holes of the movable valve disc 11 and the fixed valve disc 12 are coincided, the area is the largest, as shown by a in Figure 4 , at this time, the pressure in the tool interior is released, and the disc spring set 3 is reset; when the eccentric holes of the movable valve disc 11 and the fixed valve disc 12 are 180 degrees apart, the area is the smallest, as shown by e in Figure 4 , at this time, the pressure in the tool interior is built up, and the disc spring set 3 is compressed.

[0030] The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0031] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims

1. A turbine type hydraulic oscillation drag reducer, comprising an oscillation joint (1) and an upper joint shell (2), the oscillation joint (1) penetrating the interior of the upper joint shell (2) through a spline; characterized in that The front end position of the oscillation joint (1) is connected with the disc spring group (3) through a hole shaft gap fit, and the front end position of the oscillation joint (1) is threadedly connected with the sealing fixing sleeve (4); The upper joint shell (2) and the intermediate shell (5) are connected with each other through threads, the interior of the intermediate shell (5) is placed with a flow guide stator turbine (6) through a hole shaft gap fit, the interior of the flow guide stator turbine (6) is provided with a turbine rotor (7) and a transmission main shaft (8), the turbine rotor (7) and the transmission main shaft (8) are connected through a hole shaft transition fit, the transmission main shaft (8) penetrates the interior hole position of the turbine short joint shell (9) through a hole shaft gap fit, and the intermediate shell (5) is connected with the turbine short joint shell (9) through threads.

2. A turbo-hydraulic oscillation drag reducer according to claim 1, characterized in that: A notch is formed in the transmission main shaft (8), and the front end position of the transmission main shaft (8) is threadedly connected with the adapter joint (10).

3. A turbo-hydraulic oscillation drag reducer according to claim 2, characterized in that: The transmission main shaft (8) and the adapter joint (10) are connected through threads, and are tightly connected with the moving valve disc (11).

4. A turbo-hydraulic oscillation drag reducer according to claim 1, characterized in that: The turbine short joint shell (9) is connected with the outer side of the lower joint shell (13) through threads, and the interior of the lower joint shell (13) is fixed to the outer side of the fixed valve disc (12) through a key groove.

5. A turbo-hydraulic oscillation drag reducer according to claim 1, characterized in that: Two groups of disc spring groups (3) are arranged at equal angles with respect to the center position of the oscillation joint (1), one end of the disc spring group (3) is attached to the inner side position of the oscillation joint (1), and the other end position of the disc spring group (3) is fixed to the side position of the sealing fixing sleeve (4).

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