CN114370233A

CN114370233A - Impact screw drill tool combination with information storage and vertical drilling functions

Info

Publication number: CN114370233A
Application number: CN202210046816.2A
Authority: CN
Inventors: 石昌帅; 李胜; 祝效华
Original assignee: Southwest Petroleum University
Current assignee: Southwest Petroleum University
Priority date: 2022-01-14
Filing date: 2022-01-14
Publication date: 2022-04-19

Abstract

The invention relates to a drilling tool combination design method for improving drilling efficiency and collecting open hole information in a vertical drilling process. The screw drilling tool assembly structure comprises an information storage short section, a bypass valve assembly, an anti-drop assembly, a motor assembly, a universal shaft assembly and a transmission shaft assembly from top to bottom, and the transmission shaft assembly of the screw drilling tool is provided with a mechanical push type vertical drilling short section, a hydraulic impact device and a transmission assembly from top to bottom; an information storage short section, a bypass valve assembly, a releasing assembly, a motor assembly, a universal shaft assembly, a mechanical pushing and hanging drill assembly, a hydraulic impact device and a transmission assembly in the drilling tool combined structure are in threaded connection from top to bottom; the dropping disc, the dropping connecting rod, the motor rotor and the universal shaft upper ball hinge joint are connected in sequence by threads; the universal shaft lower ball joint, the transition center transmission shaft and the lower joint are connected through threads from top to bottom. The invention integrates a screw drilling tool, a rotary percussion drilling well, a vertical drilling well and a logging while drilling well into a whole, reduces the production cost and improves the drilling efficiency.

Description

Impact screw drill tool combination with information storage and vertical drilling functions

Technical Field

The invention relates to an oil drilling tool, relates to a screw drilling tool assembly, in particular to an impact screw drilling tool assembly with information storage and vertical drilling functions, and belongs to the technical field of drilling machinery.

Background

The exploration and development technology of petroleum and natural gas is continuously developed, and the current development situation of oil and gas all over the world is changed from an original main exploitation block to a block with complex stratum conditions and poor oil and gas storage physical properties. Especially in the block with high and steep structure in front of the mountain and large stratigraphic dip angle, well deviation is easy to occur in the drilling process due to strong natural deviation making capability and difficult deviation straightening prevention, and the well quality and the drilling speed are directly influenced.

For the vertical drilling problem, a pendulum drilling tool combination and a full-hole drilling tool combination technology are mostly adopted to solve the problem at present in a light-pressure hoisting mode, the traditional anti-deviation straightening drilling technology is poor in deviation prevention capability and slow in drilling speed, and well information statistics for marking the anti-deviation straightening capability is difficult, however, in recent years, the vertical drilling technology is developed and applied on the basis of the traditional anti-deviation straightening drilling technology, and the research and development of an impact screw drilling tool improve the force drilling speed, so that the impact screw drilling tool combination with the information storage and vertical drilling functions is invented, and the improvement of the vertical drilling speed and the measurement while drilling and storage of well body information have important significance for improving the oil and gas exploitation of the special block efficiency.

Disclosure of Invention

The invention aims to solve the problems of difficult inclined drilling prevention, low drilling rate and difficult well wall information statistics of special strata, and provides a design method of an impact screw with information storage and vertical drilling functions, which ensures better inclined drilling prevention capability, higher vertical drilling rate and well body statistical measurement capability.

The technical scheme adopted by the invention is as follows:

an impact screw drill tool assembly with information storage and vertical drilling functions mainly comprises an information storage assembly and a screw drill tool, wherein a vertical drilling assembly and a hydraulic impact assembly are comprehensively arranged on a transmission shaft part of the screw drill tool, a pressure sensor is arranged at the tail end of the transmission shaft, and a displacement sensor is arranged on a vertical drilling assembly stabilizer shell; the information storage assembly, the bypass valve assembly, the motor assembly, the universal shaft assembly, the vertical drill assembly and the hydraulic impact assembly are in threaded connection and are fixed through a set screw to prevent the hydraulic impact assembly from being tripped by rotating along the circumferential direction, and the threaded connection is sealed by an O-shaped sealing ring (not shown in detail); the information storage assembly consists of an upper joint, a shell, an antenna framework, a limiter and a storage medium, wherein the antenna and the storage medium are tightly wound on the framework, a flange of the framework is matched with a concave edge of the limiter, and the limiter is fixed in the shell through threads, so that the information storage assembly has good sealing property and stability; the vertical drill assembly adopts a bias weight strap-down flow distribution plate, a flow distribution seat and a push handle shell are designed in a split mode, the bias weight is arranged opposite to a flow distribution plate pore passage, and the flow distribution plate pore passage is matched with a flow distribution seat pore passage; the hydraulic impact assembly is designed in an impact center tube, a limitable cylinder sleeve is arranged between a tube valve and the center, the cylinder sleeve is arranged into two parts under a mountain for convenient installation, the area of the upper end of the tube valve is smaller than that of the lower end, a cavity is arranged inside a nozzle seat, a jet nozzle is arranged below the cavity, the impact hammer is connected in an axial sliding mode through a rubber ring, a flow channel is designed inside the impact hammer, the jet nozzle is right opposite to the flow channel of the impact hammer, the uppermost stroke of the impact hammer is in contact with the lower end of the tube valve, and the lowermost stroke of the impact hammer is in contact with a hammering block.

Compared with the prior art, the invention has the beneficial effects that: (1) the drilling tool assembly organically combines a screw drilling tool, vertical drilling and hydraulic impact, and has the advantages of improving the anti-deviation straightening capability and improving the drilling rate. (2) The drilling tool assembly has the advantages that logging while drilling and synchronous storage are achieved through interaction of the antenna, the sensor and the storage medium.

Drawings

FIG. 1 is a schematic diagram of a percussive screw drill assembly with information storage and vertical drilling capabilities;

FIG. 2 is a schematic diagram of the structure of an information storage assembly;

FIG. 3 is a schematic structural view of a vertical drill assembly;

FIG. 4 is a schematic cross-sectional view of a vertical drill assembly A;

FIG. 5 is a schematic structural view of a hydraulic impact assembly;

in the figure: 1. a storage nipple upper joint, 2, an antenna, 3, a storage medium, 4, a storage shell, 5, a bypass valve shell, 6, a bypass valve seat, 7, a drop shell, 8, a drop disc, 9, a drop connecting rod, 10, a motor rotor, 11, a stator bushing, 12, a motor shell, 13, a cardan shaft ball joint, 14, a cardan shaft shell, 15, a cardan shaft connecting rod, 16, a transition central shaft, 17, a transition central shaft centering bearing, 18, a vertical drill shell, 19, a flow distribution joint, 20, a vertical drill central shaft, 21, a bias weight, 22, a bias weight supporting bearing, 23, a flow distribution disc, 24, a push block, 25, a flow distribution seat, 26, a hydraulic impact shell, 27, an impact pipe upper joint, 28, an impact outer pipe upper joint, 29, an impact inner cylinder, 30, an impact pipe valve, 31, a nozzle seat, 32, a impact hammer, 33, an impact outer pipe lower joint, 34, an anvil, 35, an impact pipe lower joint, 36. the device comprises a transmission shaft, 37, a bearing string, 38, a stable joint, a, an information storage assembly, B, a bypass valve assembly, C, an anti-drop assembly, d, a motor assembly, e, a universal shaft assembly, f, a vertical drilling assembly, g, a hydraulic impact assembly, h, a transmission shaft assembly, a1, an axial limiter, a2 antenna framework, a3, a storage medium framework, f1, a first sealing ring, f2, a second hole, f3 a third hole, f4, a fourth hole, f5, a fifth hole, f6, a sixth hole, f7, a throttle valve, f8, a central pipe outer cavity, f9, a first cavity, g1, a first oblique hole, g2, a second hole, g3, a third hole, g4, a nozzle seat hole, g5, a hole, a pipe valve, g6, a sixth hole, g7, a rubber annular gasket, A, an upper cavity, a lower cavity, a jet cavity, and a jet cavity.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

As shown in fig. 1-5, an impact screw drill tool assembly with information storage and vertical drilling functions mainly comprises an information storage assembly (a), a bypass valve assembly (b), an anti-drop assembly (c), a motor assembly (d), a universal shaft assembly (e), a vertical drill assembly (f), a hydraulic impact assembly (g) and a transmission shaft assembly (h), and is characterized in that: the storage short section (a) is in threaded connection with the shell (4) through the upper connector (1), and the limiter (a1) is in threaded connection with the shell (4) and limits and fixes the antenna (2) and the storage medium (3); the vertical drill assembly (f) is positioned by a shell (18) through threaded connection, the tail of the shell is uniformly provided with 3 first cavities (f9) corresponding to push handles (24), the 3 push handles (24) are installed in the cavities, the inner surface of each push handle cavity is uniformly provided with 3 sixth pore passages (f6) corresponding to a flow distribution seat (25), the tail is provided with 1 sensor installation port, a transition central shaft (16), a flow distribution joint (19) and a vertical drill central shaft (20) are connected through threads, the shoulder of the flow distribution joint is in sliding connection with the limiting position of the shell through a first sealing ring (f1), the flow distribution joint is uniformly provided with 4 second pore passages (f2) for connecting the central shaft and the outer cavity, a deflection block (21), a centering bearing (22) and a flow distribution disc (23) are in strapdown connection, the centering bearing is positioned through the limiting position of the shell, and the deflection block is relatively connected with the third pore passage (f3) of the flow distribution disc, the flow distribution plate (23) and the flow distribution seat (25) are in rotatable contact, the flow distribution seat (25) is in positioning connection with the shell through threads, the flow distribution seat is uniformly provided with 3 fourth pore passages (f4) corresponding to the flow distribution plate along the axial direction, the flow distribution seat is uniformly provided with a fifth pore passage (f5) connecting the fourth pore passage (f4) and a sixth pore passage (f6) along the radial direction, and the weight bias, the flow distribution plate and the flow distribution seat are in sliding connection with the central shaft (20) through a sealing ring; the hydraulic impact assembly (g) is provided with a shell (26) which is positioned through threaded connection, a vertical drill central pipe (20), an impact pipe upper joint (27), a central pipe upper joint (28), a central pipe lower joint (33) and an impact pipe lower joint (35) are connected through threads, the lower part of the central pipe is radially provided with 4 oblique first pore passages (g1) which are connected with an inner cavity and an outer cavity, a cylinder body (29) is positioned through an upper joint and a limit position on the central pipe, a nozzle seat (31) is positioned through an upper joint and a cylinder body limit position, an impact pipe valve (30) can axially move in a gap between the cylinder body and the nozzle seat through a sealing ring, the nozzle seat is provided with a fourth pore passage (g4) which vertically drills a central shaft pore passage and a fifth pore passage (g5) of the pipe valve, a sixth pore passage (g6) in the nozzle seat and a second pore passage (g2) of the impact hammer, the nozzle seat is provided with a nozzle, the impact hammer (32) can axially reciprocate through the sliding connection of a rubber annular gasket (g7), the anvil (34) and the impact lower connector (35) are connected through threads, and third inclined holes (g3) are uniformly formed in the large end face of the anvil and are communicated with the impact cavity and the transmission shaft pore passage; the transmission shaft assembly (h) is connected with the impact shell (26) through a thread by a stabilizing joint (38), the transmission shaft (36) and the impact lower joint (35) are connected through a thread, a sensor mounting port (39) is arranged at the tail end of the transmission shaft, a bearing string (37) is limited through the transmission shaft and the stabilizing joint, the stabilizing joint is connected with the transmission shaft in a sliding mode through a first sealing ring (h1), and a second flow channel (h2) is arranged inside the stabilizing joint (38) and communicated with the impact outer cavity and the outside.

During drilling operation, drilling fluid enters the motor through the bypass valve, a certain pressure difference is formed between the inlet and the outlet of the motor, the drill is driven to do planetary motion around the axis of the stator, and the torque and the drilling speed are delivered to the drill bit through the universal shaft, the central shafts at all stages and the transmission shaft to break rock and drill; drilling fluid enters a vertical drill assembly (f) through a universal shaft, due to the action of a throttle valve (f7), the drilling fluid firstly enters a cavity outside a central pipe through a radial second hole (f2) of a flow distribution joint (19), so that the cavity is filled with high-pressure drilling fluid and then flows through a vertical drill central pipe (20), a 60-degree deflection block (21) is in strapdown connection with a flow distribution plate (23), the deflection block is oppositely arranged with a third hole channel (f3) of the flow distribution plate, the deflection block and the flow distribution plate can freely rotate around the central pipe under the action of a centering bearing (22), a third hole channel (f3) of the flow distribution plate can be matched with an axial fourth hole channel (f4) of a flow distribution seat (25), the flow distribution seat is fixed on a shell (18) through threads, the flow distribution seat is radially provided with a fifth hole channel (f5) matched with a sixth hole channel (f6) of the shell, a push handle (24) is arranged in the cavity (f7) of the shell, and the cavity is communicated with the flow distribution seat through the sixth hole channel (f6), when the tool combination is deflected, the deflection block turns to the lower side of the well wall, the flow distribution plate pore passage connected with the deflection block is communicated with the high side pore passage of the flow distribution seat, high-pressure drilling fluid in the outer cavity of the central pipe enters a high side push handle installation cavity (f7) through the corresponding pore passage, the push handle is extended out under the action of hydraulic pressure to act on the well wall, the direction of deflection is continuously changed in the drilling process, the extension of different push handles is correspondingly changed, the push handle acts on the well wall, and the drill bit is righted by using the reaction force; drilling fluid enters a nozzle seat of a hydraulic impact assembly (g) through a vertical drilling assembly, when a hammer and a pipe valve are positioned at the lowest part of a stroke, the drilling fluid flows into a lower cavity (B) of the pipe valve through a fourth hole (g4) of the nozzle seat, the pipe valve moves upwards to form the highest position due to the fact that the area of the lower cavity is larger than that of an upper cavity (A), then the drilling fluid enters a cavity (g6) of the nozzle seat, the drilling fluid generates high-speed jet flow through a jet flow jet hole of the nozzle, the jet flow generates entrainment negative pressure in a hammer flow passage (g2) to drive the hammer to move upwards, when the hammer rises to be in contact with the pipe valve, due to the fact that a drilling fluid path is interrupted, instantaneous high pressure is generated in an upper cavity and a lower cavity (A, B) of the pipe valve, the hammer and the pipe valve synchronously accelerate downwards under the action of the high pressure, after the pipe valve is stopped by the section of a lower cylinder sleeve, the high-pressure drilling fluid in the cavity (g6) of the nozzle seat accelerates the hammer again until the hammer strikes an anvil (34), so as to generate periodic axial impact; a first hole channel (g1) is formed in the lower part (33) of the impact tube along the radial direction in an inclined mode, a small part of drilling fluid enters an outer cavity gap of the hydraulic impact center tube through the hole channel, and the lubricating bearing string (37) is discharged through a discharge hole; under the action of the cable, an antenna in the information storage short section generates an alternating magnetic field, a displacement sensor arranged on a vertical drilling assembly stabilizer measures the extension displacement of the push handle under the action of the alternating magnetic field, a measurement result is transmitted back to the information storage assembly in real time and stored in a storage medium, when the drilling operation is completed, a worker takes out the storage short section, and the relation among the extension displacement of the push handle, the diameter of a well hole and the diameter of a drilling tool is analyzed, so that the well hole information is obtained.

Claims

1. A percussion screw drill tool assembly with information storage and vertical drilling functions mainly comprises: the device comprises a storage short section upper joint (1), an antenna (2), a storage medium (3), a storage shell (4), a bypass valve shell (5), a bypass valve seat (6), a dropping shell (7), a dropping disc (8), a dropping connecting rod (9), a motor rotor (10), a stator bushing (11), a motor shell (12), a universal shaft ball hinge joint (13), a universal shaft shell (14), a universal shaft connecting rod (15), a transition central shaft (16), a transition central shaft centralizing bearing (17), a vertical drilling shell (18), a flow distribution joint (19), a vertical drilling central shaft (20), a bias weight (21), a bias weight supporting bearing (22), a flow distribution disc (23), a push block (24), a flow distribution seat (25), a hydraulic impact shell (26), an impact pipe upper joint (27), an impact outer pipe upper joint (28), an impact inner cylinder (29), an impact pipe valve (30), The device comprises a nozzle seat (31), a hammer (32), an impact outer pipe lower part (33), an anvil (34), an impact pipe lower joint (35), a transmission shaft (36), a bearing string (37) and a stable joint (38); the method is characterized in that: the storage short section (a) is in threaded connection with the shell (4) through the upper connector (1), and the limiter (a1) is in threaded connection with the shell (4) and limits and fixes the antenna (2) and the storage medium (3); the vertical drill assembly (f) is positioned by a shell (18) through threaded connection, the tail of the shell is uniformly provided with 3 cavities corresponding to push handles (24), the 3 push handles (24) are installed in the cavities, the inner surface of each push handle cavity is uniformly provided with 3 sixth pore channels (f6) corresponding to a flow distribution seat (25), the tail is provided with 1 sensor installation port, a transition central shaft (16), a flow distribution joint (19) and a vertical drill central shaft (20) are connected through threads, the shoulder of the flow distribution joint is in sliding connection with the limiting position of the shell through a first sealing ring (f1), the flow distribution joint is uniformly provided with 4 second pore channels (f2) for connecting the central shaft and the outer cavity, a deflection block (21), a centering bearing (22) and a flow distribution disc (23) are in strapdown connection, the centering bearing is positioned by the limiting position of the shell, the deflection block is relatively connected with the third pore channel (f3) of the flow distribution disc, and the flow distribution disc (23), The flow distribution seat (25) is in rotatable contact, the flow distribution seat (25) is in positioning connection with the shell through threads, the flow distribution seat is uniformly provided with 3 fourth pore channels (f4) corresponding to the flow distribution disc along the axial direction, the flow distribution seat is uniformly provided with a fifth pore channel (f5) connecting the fourth pore channel (f4) and a sixth pore channel (f6) along the radial direction, and the deflection block, the flow distribution disc and the flow distribution seat are in sliding connection with the central shaft (20) through a sealing ring; the hydraulic impact assembly (g) is provided with a shell (26) which is positioned through threaded connection, a vertical drill central pipe (20), an impact pipe upper joint (27), a central pipe upper joint (28), a central pipe lower joint (33) and an impact pipe lower joint (35) are connected through threads, the lower part of the central pipe is radially provided with 4 inclined pore passages (g1) which are connected with an inner cavity and an outer cavity, a cylinder body (29) is positioned through an upper joint and a limit position on the central pipe, a nozzle seat (31) is positioned through the upper joint and the limit position of the cylinder body, an impact pipe valve (30) can axially move in a gap between the cylinder body and the nozzle seat through a sealing ring, the nozzle seat is provided with a fourth pore passage (g4), a vertical drill central axis pore passage is communicated with a pipe valve fifth pore passage (g5), a sixth pore passage (g6) in the nozzle seat and a second pore passage (g2) of the impact hammer, the nozzle seat is provided with a nozzle, the impact hammer (32) is slidably connected through a rubber annular gasket (g7) and can axially reciprocate, the anvil (34) and the impact lower connector (35) are connected through threads, and the large end face of the anvil is uniformly provided with oblique holes (g3) for communicating the impact cavity and the transmission shaft pore passage; the transmission shaft assembly (h) is connected with the impact shell (26) through threads by a stabilizing joint (38), the transmission shaft (36) and the impact lower joint (35) are connected through threads, a sensor mounting port (39) is formed in the tail end of the transmission shaft, the bearing string (37) is limited by the transmission shaft and the stabilizing joint, the stabilizing joint is connected with the transmission shaft in a sliding mode through a sealing ring (h1), and a flow channel (h2) is arranged inside the stabilizing joint (38) and communicated with the impact outer cavity and the outside.

2. The percussion screw drill assembly with information storage and vertical drilling functions as claimed in claim 1, wherein the information storage assembly (a) is characterized in that under the action of a cable (not described in detail), the antenna (2) generates a specific alternating magnetic field to perform information and energy interaction with the sensor (39), the antenna (2) is tightly wound on the outer wall of the antenna framework (a2), the flanges of the antenna framework (a2) and the dielectric framework (a3) are matched with the stopper (a1), and the stopper is connected with the casing (4) through threads, so that the stability and the sealing performance of the whole assembly are enhanced.

3. A percussion screw drill assembly having information storage and vertical drilling capabilities, as claimed in claim 1, wherein the drop drilling assembly (f) is provided with a second port (f2) and a choke port (f7) for allowing drilling fluid to flow through the outer bore of the central tube, through the central tube (20), through the 60 ° offset weight (21) and the distributor plate (23), the offset weight and the distributor plate being freely rotatable about the central tube under the action of the centering bearing (22), a third port (f3) of the distributor plate being engageable with a fourth port (f4) axially of the distributor plate (25) which is threadedly secured to the housing (18), the distributor plate being radially provided with a fifth port (f5) for engagement with a sixth port (f6) of the housing, the push handle (24) being mounted in the housing cavity (f7) and the sixth port (f6) being in fluid communication with the distributor plate, when the tool combination is deflected, the deflection block is turned to the lower side of the well wall, the flow distribution plate pore passage connected with the deflection block is communicated with the high side pore passage of the flow distribution seat, high-pressure drilling fluid in the outer cavity of the central pipe enters a high side push handle mounting cavity (f7) through the corresponding pore passage, the push handle extends out of the well wall under the action of hydraulic pressure, and the drilling tool combination is centered by the reaction force.

4. The impact screw drill assembly with information storage and vertical drilling functions of claim 1, wherein the hydraulic impact assembly (g), a cylinder sleeve (29) is arranged between the pipe valve (30) and the central pipe (28), the cylinder sleeve is designed into an upper part and a lower part for convenient installation, the cylinder sleeve (29) is positioned through an upper joint and a limit position on the central pipe, the nozzle seat (31) is positioned through the upper joint and the limit position of the cylinder body, the pipe valve (30) can move axially in a gap between the cylinder body and the nozzle seat through a sealing ring, the nozzle seat is provided with a fourth hole channel (g4), a fifth hole channel (g5) of the pipe valve is vertically drilled in the central shaft hole channel and communicated with the sixth hole channel (g6) in the nozzle seat and a second hole channel (g2) of the impact hammer, the nozzle seat is provided with a nozzle at the lower part, the impact hammer (32) is slidably connected through a rubber annular gasket (g7) and can reciprocate axially, an anvil (34) and an impact lower connector (35) are connected through threads, a large end face of the anvil is uniformly provided with an oblique third hole (g3) for communicating an impact cavity and a transmission shaft hole channel, when a hammer and a pipe valve are positioned at the lowest stroke, drilling fluid flows into a pipe valve lower cavity (B) through a nozzle seat fourth hole channel (g4), as the area of the lower cavity is larger than that of an upper cavity (A), the pipe valve moves upwards to form the highest position, then the drilling fluid enters a nozzle seat cavity (g6), the drilling fluid generates high-speed jet flow through a jet flow jet hole of a nozzle, the jet flow generates entrainment negative pressure in a second flow channel (g2) of the hammer to drive the hammer to move upwards, when the hammer rises to be contacted with the pipe valve, as the path of the drilling fluid is interrupted, instantaneous high pressure is generated in the upper cavity and the lower cavity (A, B) of the pipe valve, the hammer and the pipe valve synchronously accelerate downwards under the action of high pressure, and when the pipe valve is stopped by the section of a lower cylinder sleeve, the high-pressure drilling fluid in the nozzle seat cavity (g6) accelerates the hammer again for a second time until the hammer strikes the anvil (34), and the hammer reciprocates to generate periodic axial impact.