CN106223859A - Down-hole power formula vibratory impulse drilling tool - Google Patents

Abstract

The invention belongs to the field of petroleum drilling, and in particular relates to an downhole power supply type vibration impact drilling tool, which includes an upper outer cylinder, a battery cylinder, a battery pack, a lower outer cylinder, a power cylinder, a low-speed motor, a lower support, a mandrel, a drill bit, an upper changer Commutator piece, lower commutator piece, spline, the upper outer cylinder and the lower outer cylinder are threaded, the battery pack is arranged inside the upper and lower outer cylinders, the power cylinder and the lower outer cylinder are screwed and fixed, and the lower commutator piece is set on the upper outer cylinder. At the lower part of the commutator, the mandrel is connected to the drill bit through threads, and splines are set on the outside of the mandrel; the battery pack can provide a stable power source for the low-speed motor, and the relative movement of the upper commutator and the lower commutator through the engagement of two smooth inclined surfaces, And under the action of the spline, it drives the drill bit to do rotation and axial impact movement. The downhole power supply type vibration impact drilling tool can provide a stable axial impact power source and axial impact frequency without affecting the original rotation of the drill bit, realize the joint rock breaking of the drill bit static pressure rotation and dynamic load impact, and effectively increase the oil drilling speed.

Description

Downhole Power Vibration Shock Drilling Tools

technical field

The invention relates to a downhole power supply type vibration impact drilling tool, which belongs to the field of petroleum drilling.

Background technique

At present, the oil industry is in a cold winter period. In order to cope with the long-term and sustained low oil price situation, it is necessary to continuously improve the efficiency of oil exploration and development and reduce the cost of oil and gas development. By increasing the ROP of oil drilling, the drilling and construction period can be effectively reduced and the drilling cost can be reduced. Vibration impact drilling technology is a new technology to efficiently increase the drilling speed of drilling machinery. By applying axial impact load to the drill bit, the technology adds axial impact to the original rotation of the drill bit and realizes the rotation of the drill bit. The combination of pressing and impact rock breaking has changed the rock breaking method of conventional drilling, and can effectively improve the rock breaking efficiency of the drill bit. Therefore, the vibration impact drilling technology has broad application prospects.

The existing vibration impact drilling technology tools include hydraulic type, rotary valve type, jet type, screw type, etc. The power source of the axial impact load mainly comes from the hydraulic energy of the drilling fluid, the vibration energy of the drill string, etc. Due to the need to consume drilling fluid Hydraulic energy, drill string vibration instability and other reasons lead to the existence of unstable power source, large hydraulic energy consumption of drilling fluid, low stability and low single impact energy in this type of vibration impact drilling tools, which seriously restrict vibration impact Large-scale popularization and application of drilling technology.

The present invention proposes a downhole power supply type vibration impact drilling tool, which can provide a stable drill bit axial impact power source, stable axial impact frequency, efficient power conversion, and does not affect the original rotation of the drill bit, realizing the drill bit The combination of static pressure rotation and dynamic load impact rock breaking has changed the rock breaking method of conventional oil drilling, which can effectively improve the rock breaking efficiency of the drill bit and reduce drilling costs.

Contents of the invention

The technical problem to be solved by the present invention is to provide a stable drill bit axial impact power source, stable axial impact frequency, efficient power conversion, and does not affect the original rotation of the drill bit, so as to realize the static pressure rotation of the drill bit It is a downhole power supply vibration impact drilling tool combined with dynamic load impact and rock breaking.

The downhole power supply type vibration impact drilling tool of the present invention consists of an upper outer cylinder, a battery cylinder, an upper pressure sleeve, a sealing ring, a battery pack, a lower outer cylinder, a lower pressure sleeve, a power cylinder, a low-speed motor, a transmission shaft, and a mandrel. Cylinder, lower support, mandrel, drill bit, compression nut, upper gland, upper buffer sleeve, lower buffer sleeve, cable, lower gland, upper commutator piece, lower commutator piece, spline, anti-slip gasket. The upper outer cylinder and the lower outer cylinder are connected by threads to form the outer cylinder of the device. Four bosses with internal threads are arranged inside the upper outer cylinder, and the compression nut is used to connect with the upper gland. The outer periphery of the lower part of the upper gland is provided with three O-shaped seals. ring, the upper gland and the battery barrel are connected by threads. An upper pressing sleeve is arranged on the lower part of the upper gland, and the upper pressing sleeve is threadedly connected with the battery barrel, and two O-shaped sealing rings are arranged on the outer periphery of the lower part of the upper pressing sleeve. The upper buffer sleeve is arranged on the lower part of the upper pressing sleeve, and the upper buffer sleeve is cross-shaped. The bottom of the upper buffer cover is a battery pack, and the battery is a lithium battery. The lower buffer sleeve is arranged at the bottom of the battery pack, and the lower buffer sleeve is connected to the battery outer cylinder through threads, and two O-rings are arranged on the outer periphery of the upper part of the lower buffer sleeve. A lower pressure sleeve is arranged at the lower part of the lower buffer sleeve, and the lower pressure sleeve is connected to the battery barrel through threads, and two O-rings are arranged on the outer periphery of the upper part of the lower pressure sleeve. The lower part of the lower pressure sleeve is a lower gland, which is connected with the battery barrel through threads. Cables are arranged inside the lower buffer sleeve, the lower pressing sleeve and the lower pressing cover, and the battery pack and the low-speed motor are connected through the cables. The low-speed motor is arranged at the bottom of the lower gland, and a square sealing ring is arranged at the top of the low-speed motor. The low-speed motor is installed inside the power cylinder, and the power cylinder is connected and fixed with the lower outer cylinder through a compression nut. The transmission shaft is arranged at the bottom of the low-speed motor, and is connected with the outer shaft of the low-speed motor through threads, and three O-rings are arranged on the periphery of the transmission shaft. The outer cylinder of the mandrel is connected with the lower outer cylinder through threads, and forms the outer cylinder structure of the whole tool with the upper outer cylinder. The drive shaft and the upper commutator are connected by threads, and the lower commutator is set on the lower part of the upper commutator, and the two commutator are engaged by two smooth slopes, and the two commutator interact to convert the rotational motion of the low-speed motor The axial reciprocating motion of the lower commutator segment is formed. The lower part of the lower commutator piece is provided with a mandrel, the mandrel is connected to the drill bit through the lower thread, and the outside of the mandrel is provided with a spline, which is connected to the lower support through the spline. The spline can not only ensure the rotation of the drill bit, but also transmit the upper commutator piece Axial impact action. The lower support and the outer cylinder of the mandrel are connected by threads, three O-rings are arranged on the inner periphery of the lower part of the lower support, and the anti-slip gasket is arranged between the lower support and the outer cylinder of the mandrel.

The beneficial effects of the present invention are:

After the upper buffer sleeve and the lower buffer sleeve of the rubber material are compressed, the battery pack can be well protected from impact and collision damage. The high-temperature lithium battery pack can provide a stable power source for the low-speed motor in the mine, and the low-speed motor can provide stable low-speed rotary motion, and the relative motion of the upper and lower commutator segments can convert the rotary motion of the motor into a reliable axial motion, through the spline The function can not only ensure the original rotary motion of the drill bit, but also realize the axial reciprocating motion of the drill bit. Through the joint rock-breaking effect of drill bit static pressure rotation and axial impact, the rock-breaking efficiency of the drill bit can be effectively improved, rapid drilling can be realized, and drilling cost can be reduced.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

In the figure: 1, upper outer cylinder 2, battery cylinder 3, upper pressure sleeve 4, upper pressure sleeve sealing ring 5, battery pack 6, lower outer cylinder 7, lower pressure sleeve 8, power cylinder 9, low-speed motor 10, transmission shaft 11. Mandrel outer cylinder 12, lower support 13, mandrel 14, drill bit 15, upper outer cylinder compression nut 16, upper gland 17, upper gland sealing ring 18, upper buffer sleeve 19, lower buffer sleeve 20, lower Compression sleeve sealing ring 21, cable 22, lower gland 23, motor sealing ring 24, lower outer cylinder compression nut 25, upper reversing segment 26, lower reversing segment 27, spline 28, lower support sealing ring 29, anti-skid gasket.

detailed description

The present invention will be further described below in conjunction with accompanying drawing:

As shown in Figure 1, the downhole power supply type vibration impact drilling tool according to the present invention includes an upper outer cylinder 1, a battery cylinder 2, an upper pressure sleeve 3, an upper pressure sleeve sealing ring 4, a battery pack 5, a lower outer cylinder 6, Lower pressure sleeve 7, power cylinder 8, low-speed motor 9, transmission shaft 10, mandrel outer cylinder 11, lower support 12, mandrel 13, drill bit 14, upper outer cylinder compression nut 15, upper gland 16, upper gland Seal ring 17, upper buffer sleeve 18, lower buffer sleeve 19, lower pressure sleeve seal ring 20, cable 21, lower gland 22, motor seal ring 23, lower outer cylinder compression nut 24, upper commutator piece 25, lower changer To the sheet 26, the spline 27, the lower support sealing ring 28, the anti-slip gasket 29. The upper outer cylinder 1 and the lower outer cylinder 6 are connected by threads to form a basic outer cylinder of the device. Four bosses with internal threads are arranged inside the upper outer cylinder 1, and the upper outer cylinder 1 and the upper compression nut 15 are used to press The cover 16 is connected and fixed, and the outer periphery of the lower part of the upper gland 16 is provided with three upper gland sealing rings 17. The upper gland sealing rings 17 are O-shaped sealing rings, which can prevent drilling fluid from entering the battery cartridge 2. The upper gland 16 and the battery cartridge 2 by screw connection. The upper gland 6 is arranged at the lower part of the upper gland 2, and the upper gland 6 and the battery barrel 2 are fixed through threaded connection. Two upper gland sealing rings 4 are arranged on the outer periphery of the lower part of the upper gland 6, and the upper gland sealing ring 4 is an O-shaped seal. The ring can further prevent the drilling fluid from entering the battery barrel 2, and the upper pressure sleeve 6 can compress the lower upper buffer sleeve 18. The upper buffer sleeve 18 is cross-shaped and made of rubber. After the upper pressure sleeve 6 presses the upper buffer sleeve 18, the upper buffer sleeve 18 can well protect the battery pack 5 from collision damage. The bottom of the upper buffer cover 18 is provided with a battery pack 5, the battery pack 5 is a high-temperature lithium battery pack, and the battery pack 5 can provide a stable power source for the low-speed motor 9. The lower buffer sleeve 19 is arranged on the battery pack 5 bottom, and the lower buffer sleeve 19 is cross-shaped, and the material is rubber. After the lower buffer sleeve 19 is compressed, the battery pack 5 can be well protected from collision damage. The bottom of the lower buffer sleeve 19 is provided with a lower pressure sleeve 7, which is threadedly connected with the battery barrel 2, and two lower pressure sleeve sealing rings 20 are arranged on the upper periphery of the lower pressure sleeve 7 to prevent drilling fluid from entering the battery barrel 2. The lower part of the lower pressing sleeve 7 is the lower gland 22, and the lower gland 22 is connected with the battery cartridge 2 through threads. The cable 21 is arranged inside the lower buffer sleeve 19, the lower pressing sleeve 7 and the lower pressing cover 22, and the cable 21 connects the battery pack 5 and the low-speed motor 9. Low speed motor 9 is arranged on lower gland 22 bottoms, and low speed motor 9 tops are provided with a motor sealing ring 23, and sealing ring is square, can prevent drilling fluid from contacting with low speed motor 9, and low speed motor 9 is installed in power cylinder 8 inside. The power cylinder 8 is connected and fixed with the lower outer cylinder 6 through the lower outer cylinder compression nut 24 . Transmission shaft 10 is arranged on low-speed motor 9 bottoms, and transmission shaft 10 is connected with low-speed motor 9 outer shafts by screw thread, and transmission shaft 10 middle periphery is provided with three road sealing rings. The mandrel outer cylinder 11 is threadedly connected with the lower outer cylinder 6 and forms the outer cylinder structure of the whole tool with the upper outer cylinder 1 . The upper commutator piece 25 is arranged on the lower part of the transmission shaft 10, and is connected by threads. The lower commutator piece 26 is arranged on the lower part of the upper commutator piece 25. The two commutator pieces are engaged by two smooth slopes. When the upper commutator piece 25 is on After the drive shaft 10 starts to rotate, the lower commutator segment 26 starts to reciprocate axially. The mandrel 13 is arranged at the bottom of the lower commutator piece 26, and the mandrel 13 is connected with the drill bit 14 through the lower thread, and the spline 27 is arranged on the outside of the mandrel 13, and is connected with the lower support 12 by the spline 27. Under the action of the spline 27, it can be The rotary action of the drill bit is guaranteed, and the axial impact action of the upper part is transmitted to the drill bit 14 at the same time. The lower support 12 is threadedly connected to the mandrel outer cylinder 11. Three lower support sealing rings 28 are arranged on the inner periphery of the lower part of the lower support 12. The lower support sealing rings 28 are O-rings, which can prevent drilling fluid from entering the inside of the tool. Anti-skid pads The sheet 29 is provided between the lower support 12 and the mandrel outer cylinder 11 .

Claims (6)

1. a down-hole power formula vibratory impulse drilling tool, including upper urceolus (1), battery sleeve (2), upper gland (3), upper gland Sealing ring (4), set of cells (5), lower urceolus (6), lower gland (7), power tube (8), slowspeed machine (9), power transmission shaft (10), mandrel Urceolus (11), lower support (12), mandrel (13), drill bit (14), upper urceolus clamp nut (15), upper press cover (16), upper press cover are close Seal (17), upper cushion collar (18), lower cushion collar (19), lower gland sealing ring (20), cable (21), lower cover (22), motor Sealing ring (23), lower urceolus clamp nut (24), upper commutator segment (25), lower commutator segment (26), spline (27), lower support sealing ring (28), improved mat (29), it is characterised in that: upper urceolus (1) is threadeded with lower urceolus (6), upper press cover (16) and battery sleeve (2) threaded, upper gland (6) is arranged on upper press cover (2) bottom, and upper gland (6) and battery sleeve (2) are threaded connection solid Fixed, upper cushion collar (18) bottom arranges set of cells (5), and lower cushion collar (19) is arranged on set of cells 5 bottom, under lower cushion collar (19) Portion arranges lower gland (7), and lower gland (7) bottom is lower cover (22), and lower cover (22) is connected with battery sleeve (2) by screw thread, Cable (21) is arranged on lower cushion collar (19) and lower gland (7) and lower cover (22) is internal, and slowspeed machine (9) is arranged on lower cover (22) bottom, power tube (8) is connected fixing with lower urceolus (6), and power transmission shaft (10) is arranged on slowspeed machine (9) bottom, outside mandrel Cylinder (11) is threaded connection with lower urceolus (6), and power transmission shaft (10) bottom arranges commutator segment (25), and lower commutator segment (26) is arranged In upper commutator segment (25) bottom, lower commutator segment (26) bottom arranges mandrel (13), and mandrel (13) passes through lower thread and drill bit (14) connecting, mandrel (13) outside arranges spline (27), and lower support (12) is threaded connection with mandrel urceolus (11), slipmat Sheet (29) is arranged between lower support (12) and mandrel urceolus (11).

Down-hole power formula vibratory impulse drilling tool the most according to claim 1, it is characterised in that: upper urceolus (1) is internal Arranging four band female thread boss, in utilization, upper urceolus (1) and upper press cover (16) are connected fixing by urceolus clamp nut (15), under Urceolus (2) is internal arranges four band female thread boss, and power tube (8) is by lower urceolus clamp nut (24) with lower urceolus (6) even Connect fixing.

Down-hole power formula vibratory impulse drilling tool the most according to claim 1, it is characterised in that: upper press cover (16) bottom Periphery arranges three roads upper press cover sealing ring (17), and upper press cover sealing ring (17) is O RunddichtringO, can prevent drilling fluid from entering into electricity In pond cylinder (2), upper gland (6) lower, outer perimeter arranges gland sealing ring (4) in twice, and upper gland sealing ring (4) is that O type seals Circle, prevents drilling fluid from entering in battery sleeve (2), and the upper periphery of lower gland (7) arranges gland sealing ring (20) under twice, presses down Set sealing ring (20) is O RunddichtringO, prevents drilling fluid from entering in battery sleeve (2), and slowspeed machine (9) top arranges one motor Sealing ring (23), sealing ring is square, prevents drilling fluid from contacting with slowspeed machine (9), and lower support (12) bottom inner circumferential arranges three Supporting sealing ring (28) under road, lower support sealing ring (28) is O RunddichtringO, prevents drilling fluid from entering into tool interior.

Down-hole power formula vibratory impulse drilling tool the most according to claim 1, it is characterised in that: upper cushion collar (18) is Cross, material is rubber, cushion collar (18) in upper gland (6) compression, and upper cushion collar (18) can protect set of cells (5) from touching Damage is bad, and upper cushion collar (18) bottom arranges set of cells (5), and set of cells (5) is lithium battery group, and set of cells (5) can be low speed electricity Machine (9) provides stablizes power resources, and lower cushion collar (19) is arranged on set of cells (5) bottom, and lower cushion collar (19) is cross, material Material is rubber, and lower cushion collar (19) can protect set of cells (5) from damaged in collision after compressing.

Down-hole power formula vibratory impulse drilling tool the most according to claim 1, it is characterised in that: slowspeed machine (9) is pacified Being contained in power tube (8) internal, the range of speeds of slowspeed machine (9) is 50～300r/min, and lower commutator segment (26) is arranged on changes To the bottom of sheet (25), two commutator segments are engaged by two smooth ramp, when upper commutator segment (25) drives at power transmission shaft (10) Under start to rotate after, lower commutator segment (26) starts to do reciprocal axial motion, and two commutator segments interact, can be by slowspeed machine (9) rotary motion is converted into the axially reciprocating of lower commutator segment (26).

Down-hole power formula vibratory impulse drilling tool the most according to claim 1, it is characterised in that: mandrel (13) outside sets Put spline (27), be connected with lower support (12) by spline (27), under spline (27) acts on, both can ensure that bit was made With, the Axial Shock Load on top is delivered to drill bit (14) simultaneously.