An impact screw drilling tool assembly with information storage and vertical drilling functions

Abstract

The present invention relates to a drilling tool assembly design method for improving drilling efficiency and collecting open hole information during vertical drilling. The drilling tool assembly structure includes 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. The screw drill is provided with a mechanical push-to-type vertical drilling short section, a hydraulic impact device, and a transmission assembly on its transmission shaft assembly from top to bottom; the information storage short section, the bypass valve assembly, the release assembly, the motor assembly, the universal shaft assembly, the mechanical push-to-vertical drilling assembly, the hydraulic impact device, and the transmission assembly in the drilling tool assembly structure are threadedly connected from top to bottom; the release plate, the release connecting rod, the motor rotor, and the ball joint on the universal shaft are threadedly connected in sequence; the ball joint under the universal shaft, the transition transmission center shaft, and the lower joint are threadedly connected from top to bottom. The present invention integrates screw drill, rotary drilling, vertical drilling, and logging while drilling, reduces production costs, and improves drilling efficiency.

Description

Technical Field

[0001] The invention relates to an oil drilling tool, in particular to a screw drilling tool combination, in particular to an impact screw drilling tool combination with information storage and vertical drilling functions, belonging to the technical field of drilling machinery. Background Art

[0002] With the continuous development of oil and gas exploration and development technology, the current situation of oil and gas development in the world has shifted from the original main mining blocks to blocks with complex formation conditions and poor oil and gas reservoir properties. Especially in blocks with high and steep structures in front of the mountain and large formation dips, due to the strong natural deflection ability and the difficulty of preventing deflection and drilling straight, well deviation is easy to occur during the drilling process, which directly affects the well quality and drilling speed.

[0003] For the above-mentioned vertical drilling problem, pendulum drilling tool combination and full-eye drilling tool combination technology are mostly used nowadays to solve this problem by light pressure and hanging method, while the traditional anti-deflection and straight drilling technology has poor anti-deflection ability and slow drilling speed, and it is difficult to count the wellbore information that indicates the anti-deflection and straight drilling ability. However, in recent years, vertical drilling technology has been developed and applied on the basis of traditional anti-deflection and straight drilling technology, and the research and development of impact screw drilling tools has improved the rate of force drilling. Therefore, an impact screw drilling tool combination with information storage and vertical drilling functions is invented to improve the vertical drilling rate and store wellbore information by drilling measurement, which is of great significance to improving the efficient oil and gas production in special blocks. Summary of the invention

[0004] The purpose of the present invention is to overcome the problems of difficulty in preventing deflection and straightening in special formations, low drilling rate and difficulty in counting wellbore information, and to provide a design method for an impact screw with information storage and vertical drilling functions to ensure better anti-deflection and straightening capabilities, higher vertical drilling rates and wellbore statistical measurement capabilities.

[0005] The technical solution adopted by the present invention is:

[0006] A percussion screw drilling tool combination with information storage and vertical drilling functions is mainly composed of an information storage assembly and a screw drilling tool. The vertical drilling assembly and the hydraulic impact assembly are integrated at the transmission shaft part of the screw drilling tool, and a pressure sensor is installed at the end of the transmission shaft, and a displacement sensor is installed at the vertical drilling assembly stabilizer housing; the information storage assembly, bypass valve assembly, motor assembly, universal shaft assembly, vertical drilling assembly, and hydraulic impact assembly are threadedly connected and fixed by set screws to prevent them from rotating in the circumferential direction and disengaging, and an O-ring (not described in detail) is used for sealing at the threaded connection; the information storage assembly is composed of an information storage short joint upper joint, a housing, an antenna, an antenna frame, a limiter, and a storage medium. The antenna and the storage medium are tightly wound around the frame, and the frame The flange cooperates with the concave edge of the limiter, and the limiter is fixed in the shell by threads, so it has good sealing and stability; the vertical drilling assembly adopts a eccentric weight block and a distribution plate, and the distribution seat and the push handle shell are designed separately, the eccentric weight block and the distribution plate channel are placed opposite to each other, and the distribution plate channel and the distribution seat channel cooperate; the hydraulic impact assembly is designed in the impact center tube, and a cylinder body capable of achieving limiting is provided between the pipe valve and the center. The cylinder body is provided with two parts, the upper end area of ​​the pipe valve is smaller than the lower end area, a cavity is provided inside the nozzle seat, and a jet nozzle is provided below the cavity. The hammer is axially slidably connected by a rubber ring, and a flow channel is designed inside the hammer. The jet nozzle is directly opposite to the hammer flow channel. The upper end of the hammer stroke contacts the lower end of the pipe valve, and the lower end of the stroke contacts the anvil.

[0007] Compared with the prior art, the invention has the following beneficial effects: (1) The drilling tool assembly of the invention improves the anti-deflection and straightening capabilities and the drilling rate by organically combining screw drilling tools, vertical drilling, and hydraulic impact. (2) The drilling tool assembly of the invention plays a role in logging while drilling and synchronous storage through the interaction of antennas, sensors, and storage media. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural schematic diagram of an impact screw drilling tool assembly with information storage and vertical drilling functions;

[0009] Figure 2 is a schematic diagram of the structure of the information storage assembly;

[0010] Figure 3 It is a structural schematic diagram of the vertical drilling assembly;

[0011] Figure 4 It is a schematic diagram of the cross section of the vertical drilling assembly in the direction of A;

[0012] Figure 5 It is a schematic diagram of the structure of the hydraulic impact assembly;

[0013] In the figure: 1, information storage short joint upper joint, 2, antenna, 3, information storage medium, 4, information storage shell, 5, bypass valve shell, 6, bypass valve seat, 7, anti-drop shell, 8, release plate, 9, release connecting rod, 10, motor rotor, 11, stator bushing, 12, motor shell, 13, universal shaft ball joint, 14, universal shaft shell, 15, universal shaft connecting rod, 16, transition center shaft, 17, transition Center shaft straightening bearing, 18, vertical drill housing, 19, distribution joint, 20, vertical drill center tube, 21, eccentric weight, 22, straightening bearing, 23, distribution plate, 24, push handle, 25, distribution seat, 26, hydraulic impact housing, 27, impact tube upper joint, 28, center tube upper, 29, cylinder body, 30, impact tube valve, 31, nozzle seat, 32, hammer, 33, center tube lower, 34, anvil, 35, impact Lower joint, 36, transmission shaft, 37, bearing string, 38, stable joint, a, information storage assembly, b, bypass valve assembly, c, anti-drop assembly, d, motor assembly, e, universal shaft assembly, f, vertical drill assembly, g, hydraulic impact assembly, h, transmission shaft assembly, a1, axial limiter, a2 antenna frame, a3, storage medium frame, f1, vertical drill first seal ring, f2, vertical drill second channel, f3, vertical drill first Three channels, f4, vertically drilled fourth channel, f5, vertically drilled fifth channel, f6, vertically drilled sixth channel, f7, throttle valve, f8, outer cavity of center tube, f9, first cavity, g1, first oblique channel, g2, second channel, g3, third channel, g4, nozzle seat channel, g5, pipe valve channel, g6, sixth channel, g7, rubber ring gasket, A, upper cavity of pipe valve, B, lower cavity of pipe valve, C, jet cavity. DETAILED DESCRIPTION

[0014] The present invention will be further described below in conjunction with the accompanying drawings.

[0015] like Figure 1-Figure 5As shown, an impact screw drilling tool assembly with information storage and vertical drilling functions is mainly composed of 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 drilling assembly (f), a hydraulic impact assembly (g), and a transmission shaft assembly (h), characterized in that: the housing of the information storage short section (a) is threadedly connected by an upper joint (1) and an information storage housing (4), and a limiter (a1) is threadedly connected to the information storage housing (4), and the antenna (2) and the storage medium (3) are limited and fixed; the vertical drilling assembly (f) is positioned by the vertical drilling housing (18) through a threaded connection, and three first cavities (f9) corresponding to the push handle (24) are evenly arranged at the rear of the housing. , three push handles (24) are installed in the cavity, and three vertical drill sixth holes (f6) corresponding to the distribution seat (25) are evenly opened on the inner surface of the push handle cavity, and a sensor installation port is provided at the tail, and the transition center shaft (16), the distribution joint (19), and the vertical drill center pipe (20) are connected by threads, and the first sealing ring (f1) is used at the shoulder of the distribution joint to slide with the limit position of the shell, and the distribution joint is evenly provided with 4 vertical drill second holes (f2) to connect the center shaft and the outer cavity of the shaft, and the eccentric weight block (21), the centering bearing (22), and the distribution plate (23) are strapdown, and the centering bearing is positioned by the limit position of the shell, and the eccentric weight block is relatively connected with the vertical drill third hole (f3) of the distribution plate, and the distribution plate (23) and the distribution seat (25) can be realized The flow distribution seat (25) is connected to the housing through a threaded connection, the flow distribution seat is evenly provided with three vertical drill fourth holes (f4) corresponding to the flow distribution plate along the axial direction, the flow distribution seat is evenly provided with a vertical drill fifth hole (f5) connecting the vertical drill fourth hole (f4) and the vertical drill sixth hole (f6) in the radial direction, the eccentric weight block, the flow distribution plate, and the flow distribution seat are connected to the vertical drill center tube (20) through a sealing ring for sliding; the hydraulic impact assembly (g) has a housing (26) connected and positioned through a threaded connection, the vertical drill center tube (20), the impact tube upper joint (27), the center tube upper (28), the center tube lower (33), and the impact tube lower joint (35) are connected through threads, and the lower part of the center tube is radially provided with four oblique first holes (g1) connecting the inner and outer cavities of the tube The cylinder body (29) is positioned by the upper joint and the limit position on the center tube, the nozzle seat (31) is positioned by the upper joint and the limit position of the cylinder body, the impact pipe valve (30) can realize axial movement in the gap between the cylinder body and the nozzle seat through the sealing ring, the nozzle seat is provided with a fourth channel (g4), the inner channel of the vertical drill center tube (20) is connected with the fifth channel (g5) of the pipe valve, the sixth channel (g6) inside the nozzle seat, and the second channel (g2) of the hammer, a nozzle is installed at the lower part of the nozzle seat, the hammer (32) is slidably connected through a rubber ring gasket (g7) to realize axial reciprocating movement, the anvil (34) and the impact lower joint (35) are connected by threads, and the large end surface of the anvil is evenly provided with a third oblique hole (g3) connecting the impact cavity and the transmission shaft channel;The transmission shaft assembly (h) is connected to the hydraulic impact housing (26) by a stabilizing joint (38) through threads, the transmission shaft (36) and the impact lower joint (35) are connected by threads, a sensor installation port (39) is provided at the rear end of the transmission shaft, the bearing string (37) is limited by the transmission shaft and the stabilizing joint, the stabilizing joint is slidably connected to the transmission shaft through a first sealing ring (h1), and a second flow channel (h2) is provided inside the stabilizing joint (38) to connect the impact outer cavity and the outside. ;

[0016] During drilling operation, drilling fluid enters the motor through the bypass valve, forming a certain pressure difference between the inlet and outlet of the motor, driving the drill to perform planetary motion around the stator axis, and delivering torque and drilling speed to the drill bit through the universal joint shaft, the center shafts of each level and the transmission shaft for rock breaking and drilling; the drilling fluid enters the vertical drilling assembly (f) through the universal joint shaft, and due to the action of the throttle valve (f7), the drilling fluid first enters the outer cavity of the center pipe through the radial vertical drilling second hole (f2) of the distribution joint (19), so that the cavity is filled with high-pressure drilling fluid and then flows through the vertical drilling center pipe (20), the 60° eccentric weight block (21) is strapped with the distribution plate (23) and the eccentric weight block is placed opposite to the vertical drilling third hole (f3) of the distribution plate, ... Under the action of the bearing (22), the eccentric weight block and the distribution plate can freely rotate around the center tube, and a third vertical drill hole (f3) of the distribution plate can cooperate with the fourth vertical drill hole (f4) axially of the distribution seat (25). The distribution seat is fixed to the vertical drill shell (18) by threads, and the distribution seat is radially provided with a fifth vertical drill hole (f5) which cooperates with the sixth vertical drill hole (f6) of the shell. The push handle (24) is installed in the outer cavity (f8) of the center tube, and the cavity is connected to the distribution seat through the sixth vertical drill hole (f6). When the tool assembly is deflected, the eccentric weight block turns to the lower side of the well wall, and the distribution plate hole connected to it is connected to the high side hole of the distribution seat, and the high pressure of the outer cavity of the center tube is The drilling fluid enters the outer cavity (f8) of the high-side center tube through the corresponding channel. Under the action of hydraulic pressure, the push handle extends and acts on the well wall. During the drilling process, the direction of the deflection changes continuously, and the extension of different push handles also changes accordingly. The push handle acts on the well wall, and the reaction force is used to "straighten" the drill bit; the drilling fluid enters the nozzle seat of the hydraulic impact assembly (g) through the vertical drilling assembly. When the hammer and the pipe valve are at the bottom of the stroke, the drilling fluid flows into the lower cavity (B) of the impact pipe valve through the fourth channel (g4) of the nozzle seat. Since the area of ​​the lower cavity is larger than that of the upper cavity (A), the pipe valve moves up to form the highest point, and then the drilling fluid enters the nozzle seat cavity (g6). The drilling fluid generates high-speed fluid through the jet injection hole of the nozzle. The jet generates a suction negative pressure in the hammer flow channel (g2), driving the hammer to move upward. When the hammer rises to contact the pipe valve, the drilling fluid path is interrupted, and an instantaneous high pressure is generated in the upper and lower (A, B) cavities of the pipe valve. Under the action of the high pressure, the hammer and the pipe valve are synchronously accelerated downward. When the pipe valve is stopped by the cross section of the lower cylinder body, the high-pressure drilling fluid in the nozzle seat cavity (g6) accelerates the hammer again until it hits the anvil (34), and a periodic axial impact is generated in this reciprocating manner. A first channel (g1) is obliquely opened in the radial direction under the center tube (33), and a small part of the drilling fluid enters the outer cavity of the hydraulic impact center tube through the channel, lubricates the bearing string (37), and is discharged through the drain hole;Under the action of the cable, the antenna in the information storage sub generates an alternating magnetic field. The displacement sensor installed on the vertical drilling assembly stabilizer measures the extension displacement of the push handle under the action of the alternating magnetic field, and transmits the measurement results back to the information storage assembly in real time and stores them in the storage medium. When the drilling operation is completed, the staff takes out the information storage sub and analyzes the relationship between the extension displacement of the push handle, the wellbore diameter, and the drill tool diameter, thereby obtaining the wellbore information.

Claims

1. An impact screw drilling tool assembly with information storage and vertical drilling functions, comprising: an information storage short joint upper joint (1), an antenna (2), a storage medium (3), an information storage housing (4), a bypass valve housing (5), a bypass valve seat (6), a release housing (7), a release plate (8), a release connecting rod (9), a motor rotor (10), a stator bushing (11), a motor housing (12), a universal shaft ball joint (13), a universal shaft housing (14), a universal shaft connecting rod (15), a transition center shaft (16), a transition center shaft centering bearing (17), The vertical drill housing (18), a distribution joint (19), a vertical drill center tube (20), a weight block (21), a straightening bearing (22), a distribution plate (23), a push handle (24), a distribution seat (25), a hydraulic impact housing (26), an impact tube upper joint (27), a center tube upper (28), a cylinder (29), an impact tube valve (30), a nozzle seat (31), a hammer (32), a center tube lower (33), an anvil (34), an impact tube lower joint (35), a transmission shaft (36), a bearing string (37), and a stabilizing joint (38); the characteristics are: The impact screw drilling tool assembly structure with information storage and vertical drilling functions comprises, from top to bottom, an information storage assembly (a), a vertical drilling assembly (f), a hydraulic impact assembly (g) and a transmission shaft assembly (h); the housing of the information storage assembly (a) is threadedly connected by an upper joint (1) of an information storage short joint and an information storage housing (4); a stopper (a1) is threadedly connected to the information storage housing (4) and the antenna (2) and the storage medium (3) are fixed in position; the vertical drilling assembly (f) is positioned by a vertical drilling housing (18) through a threaded connection; three cavities corresponding to the push handles (24) are evenly arranged at the rear of the housing; the three push handles (24) are installed in the cavities; and three openings corresponding to the distribution seat (25) are evenly opened on the inner surface of the push handle cavity. The corresponding sixth channel (f6) has a sensor installation port at the tail, the transition center shaft (16), the distribution joint (19), and the vertical drill center pipe (20) are connected by threads, the distribution joint shaft shoulder adopts the vertical drill first sealing ring (f1) and the housing limit position to slide connection, the distribution joint is evenly provided with 4 vertical drill second channels (f2) to connect the center shaft and the shaft cavity, the eccentric weight block (21), the centering bearing (22), and the distribution plate (23) are strapdown, the centering bearing is positioned by the housing limit position, the eccentric weight block is relatively connected to the vertical drill third channel (f3) on the distribution plate, the distribution plate (23) and the distribution seat (25) can achieve rotational contact, the distribution seat (25) is positioned and connected to the housing by threads, and the distribution seat is evenly provided with 3 vertical drill second channels (f2) along the axial direction. The fourth vertical drill hole (f4) corresponding to the distribution plate, the distribution seat is radially evenly provided with a fifth vertical drill hole (f5) connected to the fourth vertical drill hole (f4) and the sixth vertical drill hole (f6), the eccentric weight block, the distribution plate, and the distribution seat are slidably connected to the vertical drill center tube (20) through a sealing ring; the hydraulic impact shell (26) in the hydraulic impact assembly (g) is connected to the vertical drill shell (18) through threads, the vertical drill center tube (20), the impact tube upper joint (27), the center tube upper (28), the center tube lower (33), and the impact tube lower joint (35) are connected through threads, and the lower part of the center tube is radially provided with 4 oblique holes (g1) to connect the inner and outer cavities of the tube, and the cylinder body (29) is fixed to the center tube (28) through the impact tube upper joint (27). ), the nozzle seat (31) is positioned by the impact tube upper joint (27) and the cylinder body (29) limit position, the impact tube valve (30) can realize axial movement in the gap between the cylinder body and the nozzle seat through the sealing ring, the nozzle seat is provided with a fourth channel (g4) and the inner channel of the vertical drill center tube (20) is connected with the fifth channel (g5) of the tube valve, the sixth channel (g6) inside the nozzle seat, and the second channel (g2) of the hammer, a nozzle is installed at the lower part of the nozzle seat, and the outer wall of the hammer (32) is provided with a rubber ring gasket (g7), which realizes axial reciprocating movement by sliding connection with the inner wall of the center tube (28), the anvil (34) and the impact lower joint (35) are connected by threads, and the large end surface of the anvil is evenly opened with oblique holes (g3) to connect the impact cavity and the transmission shaft channel;The transmission shaft assembly (h) is connected to the hydraulic impact housing (26) by a stabilizing joint (38) through threads, the transmission shaft (36) and the impact lower joint (35) are connected by threads, a sensor installation port (39) is provided at the rear end of the transmission shaft, the bearing string (37) is limited by the transmission shaft and the stabilizing joint, the stabilizing joint is slidably connected to the transmission shaft through a sealing ring (h1), and a flow channel (h2) is provided inside the stabilizing joint (38) to connect the impact outer cavity and the outside. ; 2. The impact screw drilling tool assembly with information storage and vertical drilling functions as claimed in claim 1, characterized in that The information storage assembly (a) is powered by a dedicated underground cable, and the antenna (2) generates a specific alternating magnetic field to exchange information and energy with the sensor. The antenna (2) is tightly wrapped around the outer wall of the antenna frame (a2), and the flanges of the antenna frame (a2) and the dielectric frame (a3) ​​cooperate with the limiter (a1). The limiter is connected to the information storage shell (4) through a thread, thereby enhancing the stability and sealing of the information storage assembly (a).

3. The impact screw drilling tool assembly with information storage and vertical drilling functions as claimed in claim 1, characterized in that The vertical drill assembly (f) has a second vertical drill hole (f2) on the distribution joint (19) that cooperates with the throttle valve (f7) to first fill the outer cavity of the center tube with drilling fluid, and then flows through the vertical drill center tube (20). The weight block (21) with a central angle of 60° is welded with the distribution plate (23). Under the action of the centering bearing (22), the weight block and the distribution plate can freely rotate around the center tube. A third vertical drill hole (f3) of the distribution plate can cooperate with the fourth vertical drill hole (f4) axially of the distribution seat (25). The distribution seat is fixed to the vertical drill housing (18) by threads. The distribution seat is provided with a fifth vertical drill hole (f5) along the radial direction, which cooperates with the sixth vertical drill hole (f6) on the shell. The push handle (24) is installed in the outer cavity (f8) of the center tube. The outer cavity (f8) of the center tube communicates with the distribution seat through the sixth vertical drill hole (f6). When the tool assembly is deflected, the weight block turns to the low side of the well wall, and the distribution plate hole connected with it is connected with the high side hole of the distribution seat. The high-pressure drilling fluid in the outer cavity of the center tube passes through the corresponding hole into the high side push handle installation cavity. Under the action of hydraulic pressure, the push handle (24) extends to act on the well wall, and the reaction force straightens the drilling tool assembly.

4. The impact screw drilling tool assembly with information storage and vertical drilling functions as claimed in claim 1, characterized in that The hydraulic impact assembly (g) is provided with a cylinder body (29) between the impact pipe valve (30) and the center pipe (28). The cylinder body is designed to be divided into upper and lower parts for easy installation. When the hammer and the pipe valve are at the bottom of the stroke, the drilling fluid flows into the lower cavity (B) of the pipe valve through the fourth channel (g4) of the nozzle seat. Since the area of ​​the lower cavity is larger than that of the upper cavity (A), the pipe valve moves up to form the highest point, and then the drilling fluid enters the cavity of the nozzle seat. The drilling fluid generates high-speed fluid through the jet injection hole of the nozzle. The jet generates a suction negative pressure in the second flow channel (g2) of the hammer, driving the hammer to move upward. When the hammer rises to contact the pipe valve, the drilling fluid path is interrupted, and an instantaneous high pressure is generated in the upper and lower (A, B) cavities of the pipe valve. Under the action of the high pressure, the hammer and the pipe valve are accelerated downward synchronously. When the pipe valve is stopped by the cross-section of the lower cylinder body, the high-pressure drilling fluid in the nozzle seat cavity accelerates the hammer again until it hits the anvil (34), and a periodic axial impact is generated in this reciprocating manner.

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