CN105156031B - A kind of steering tool for electric drive directional traversing - Google Patents

Abstract

The invention relates to a guiding tool for electric drive directional crossing, which is mainly composed of a housing, a male electrical connector, an electrical connector tailstock, a junction box, a cable assembly, a variable diameter module, and a female electrical connector; the housing is composed of an upper The shell and the lower shell are composed of the upper shell and the lower shell through the groove; the cable assembly is composed of the cable outlet connector, the cable and the motor power line; one end of the cable is connected to the male electrical connector through the junction box, and the other end of the cable is through The junction box is connected to the female electrical connector; the two motor power lines respectively pass through the cable outlet connector and the cable to realize the electrical connection of the corresponding phase; The coupling is connected with the lead screw, the slider is sleeved on the lead screw, and the wing block is connected with the slider through a T-shaped slot; the slider moves linearly on the lead screw to push the wing block to extend radially. The invention has the advantages of simple structure, easy operation, intelligent and automatic wellbore trajectory control.

Description

A guiding tool for electric drive directional crossing

technical field

The invention relates to a guiding tool for electric-driven directional crossing, an auxiliary tool for reaming used in the field of pipeline directional crossing, and belongs to the technical field of oil and gas drilling devices.

Background technique

In the directional crossing of pipelines, in order to solve the problems of insufficient reaming power, low efficiency, and high failure rate in the working conditions of large pipe diameters, long distances, and complex strata, as well as to solve the problem of signal transmission distortion or cable Due to the problems of troublesome loading and unloading, easy breakage, and high failure rate, an electric drive directional traversal reaming method was proposed. The electric-driven directional crossing reaming method transmits high-power and strong electricity from the ground to the underground through the intelligent drill pipe that can transmit power and signals (see patent number: ZL201410612951.4), drives the underground motor, and the underground motor drives the reamer. At the same time, the two-way wired transmission of ground and underground signals can be realized by using carrier technology.

At present, in the field of drilling or directional crossing of pipelines, steering tools such as variable bending shells, controllable eccentrics, rotating steering tools and variable diameter stabilizers are usually used to control the wellbore trajectory. The variable bending casing and controllable eccentric are hydraulically driven to achieve steerable drilling. The most representative rotary steerable systems include Baker Hughes' AutoTrakRCLS, Schlumberger's PowerDrive, Weatherford's Revolution RSS, Gyrodata's Well Guide RSS and Halliburton's GeoPilot. Among them, AutoTrak RCLS system, PowerDrive system, Revolution RSS system Both the steering tool of the Well Guide RSS system and the Well Guide RSS system realize directional drilling by controlling hydraulic pressure, and the steering tool of the Geo-Pilot system realizes directional drilling through mechanical drive. Designing the whole system in a limited space underground makes the steering mechanism components very complicated and the hydraulic response speed is slow. The variable diameter stabilizer has a purely mechanical, mechanical-hydraulic or electromechanical-hydraulic integrated structure, and the electricity in the electromechanical-hydraulic structure refers to the weak current for control signals. The existing variable diameter stabilizers are mainly based on mechanical force or hydraulic force for variable diameter operation, and the operation is complicated; the control signal is usually transmitted by means of mud pulse, electromagnetic wave, sound wave, etc., and the transmission speed is slow and the reliability is low. Generally speaking, the existing guide tools are difficult to meet the actual needs due to complex structure, difficult processing, low efficiency and other reasons.

Similarly, it is still difficult to meet the construction needs of the electric drive directional crossing reaming method using the existing rotary steerable tool or variable diameter stabilizer to control the wellbore trajectory. In order to solve the problem of wellbore trajectory control in the electric-driven directional crossing reaming method, the present invention proposes a guiding tool for electric-driven directional crossing.

Contents of the invention

The object of the present invention is to overcome the deficiencies of the prior art, and provide a guiding tool for electric drive directional crossing, thereby improving the hole-forming quality of pipeline directional crossing, reducing construction accidents, and reducing construction costs.

The technical scheme adopted in the present invention is:

The invention is a guiding tool for electric drive directional crossing, which is mainly composed of a housing, a male electrical connector, an electrical connector tailstock, a junction box, a cable assembly, a variable diameter module and a female electrical connector; the housing is composed of an upper housing It is composed of the lower shell, the upper shell is connected with the lower shell through the groove; the tailstock of the electrical connector close to the male electrical connector is connected with the male electrical connector through threads, and the tailstock of the electrical connector close to the female electrical connector is connected with the female electrical connector through threads Connection, the tailstock of the electrical connector and the junction box are respectively connected to the cable outlet connector through bolts and nuts; the cable assembly is composed of the cable outlet connector, the cable and the motor power line; the cable is a three-wire cable, and one end of the cable is connected to the male electrical connector through the junction box. The other end of the cable is connected to the female electrical connector through the junction box, and the cable outlet connector is tightly sleeved at the end of the cable; the two motor power lines pass through the cable outlet connector and the cable respectively to realize the electrical connection of the corresponding phase; the variable diameter module consists of the motor, coupling The motor is connected to the lead screw through a coupling, the slider is set on the lead screw, the wing block is connected to the slider through a T-shaped slot; the slider moves linearly on the lead screw , to push the wings out radially.

The end of the upper shell close to the male electrical connector is a connection thread, and the inner surface of the end shell is milled into a mounting plane of a flange, and a threaded hole is drilled on the plane for mounting the flange, and the upper shell is close to the end shell of the lower shell Grooves are processed on the surface of the body; the end of the lower shell close to the female electrical connector is a connecting thread, the inner surface of the end shell is milled with a flange mounting plane, and the end surface of the lower shell close to the upper shell is processed with bosses, bosses The end close to the groove is used to realize the rotation fastening with the upper shell, and the end of the boss close to the steel ball is provided with a compression spring and a steel ball; a gasket and a shell positioning block are installed between the upper shell and the lower shell, and the shell The positioning block is provided with a positioning hole matching the size of the steel ball; a guide hole is drilled on the upper shell and the lower shell respectively, and the two guide holes are distributed in the axial direction. After installation, they are perpendicular to each other in the circumferential direction; the two guide holes The wing block is installed at the end, and the sealing ring of the wing block is installed in the sealing groove of the shell. The motor is connected to the flange through bolts, and the flange is connected to the housing through screws; 4 sets of motor support bosses are welded on the motor shell, and the 4 sets of motor support bosses are evenly distributed along the radial direction of the motor.

Two slopes are processed on the slider, and the two slopes are distributed symmetrically along the axial direction. T-shaped grooves are processed on the slider to connect the wing blocks and ensure that the slider moves in the horizontal direction; The wing block and the slide block are connected to the lead screw through threads, and the two ends of the lead screw are respectively equipped with couplings and baffles.

The beneficial effects of the present invention are: 1. It has the characteristics of simple structure, easy processing, simple control process, easy operation and high reliability; 2. It can realize intelligent and automatic wellbore trajectory control, real-time control, and effective Alleviate the difficulties of low hole quality, high failure rate, low construction efficiency, and high cost in the directional crossing of pipelines; 3. Adopt carrier technology to realize two-way wired transmission of ground and underground signals, and improve signal transmission speed and reliability.

Description of drawings

Fig. 1 is a schematic structural view of a guiding tool for electrically driven directional crossing according to the present invention;

Fig. 2 is the A-A sectional view of Fig. 1;

Fig. 3 is the B-B sectional view of Fig. 1;

Fig. 4 is a schematic diagram of the appearance of the upper casing of the present invention;

Fig. 5 is a schematic diagram of the appearance of the lower casing of the present invention;

Fig. 6 is an assembly outline view of the upper case and the lower case of the present invention.

In the figure: 1. Upper housing, 2. Male electrical connector, 3. Junction box, 4. Motor, 5. Motor support boss, 6. Coupling, 7. Wing block, 8. Lead screw, 9. Seal Pad, 10. Cable, 11. Baffle, 12. Lower housing, 13. Female electrical connector, 14. Motor power line, 15. Slider, 16. Wing block sealing ring, 17. Flange, 18. Method The installation plane of the blue plate, 19. Cable outlet connector, 20. Electric connector tailstock, 21. T-shaped slot, 22. Guide hole, 23. Guide hole, 24. Shell positioning block, 25. Compression spring, 26. Steel ball .

detailed description

Below in conjunction with accompanying drawing, technical scheme of the present invention is described in detail:

As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, a guiding tool for electric drive directional crossing of the present invention is mainly composed of a housing, a male electric connector 2, and an electric connector tailstock 20 , a junction box 3, a cable assembly, a variable diameter module and a female electrical connector 13, the housing is composed of an upper housing 1 and a lower housing 12, the upper housing 1 is connected to the lower housing 12 through a groove; The electrical connector tailstock 20 of the connector 2 is connected to the male electrical connector 2 through threads, the electrical connector tailstock 20 close to the female electrical connector 13 is connected to the female electrical connector 13 through threads, and the electrical connector tailstock 20 and the junction box 3 are respectively connected by bolts and nuts Closely connected with the cable outlet joint 19; the cable assembly is composed of the cable outlet joint 19, the cable 10 and the motor power line 14; the cable 10 is a three-wire cable, which can transmit three-phase alternating current; one end of the cable 10 passes through the junction box 3 and the male electrical connector 2 The other end of the cable 10 is connected to the female electrical connector 13 through the junction box 3, and the cable outlet connector 19 is tightly sleeved on the end of the cable 10; two motor power lines 14 respectively pass through the cable outlet connector 19 and the cable 10 to realize the electrical connection of the corresponding phase. Connection; the reducing module is composed of motor 4, coupling 6, wing block 7, screw 8 and slider 15, motor 4 is connected with screw 8 through coupling 6, slider 15 is set on screw 8, The wing block 7 is connected with the slider 15 through the T-shaped groove 21; the slider 15 moves linearly on the lead screw 8, pushing the wing block 7 to radially protrude.

As shown in Figure 1, the motor 4 is connected to the flange 17 through bolts, and the flange 17 is connected to the housing through screws; 4 sets of motor support bosses 5 are welded on the shell of the motor 4, and 4 sets of motor support bosses 5 are welded along the motor. The radial distribution of 4 is used to ensure that the centerline of the motor shaft coincides with the centerline of the casing, and is used to avoid contact between the motor 4 and the inner wall of the casing.

As shown in Figure 1 and Figure 2, two slopes are processed on the slider 15, and the two slopes are symmetrically distributed along the axial direction, and are used to fit the slopes at the end of the wing block 7; the slider 15 is processed with a T-shaped Groove 21 is used to connect wing block 7, guarantees slide block 15 to move along horizontal direction simultaneously, promotes wing block 7 to protrude radially along guide hole (22,23); Connect two wing blocks 7 on slide block 15, slide The block 15 is connected to the lead screw 8 by threads, and the two ends of the lead screw 8 are respectively equipped with a shaft coupling 6 and a baffle 11 for limiting the stroke of the slide block 15 .

As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, and Fig. 6, the end of the upper shell 1 close to the male electrical connector 2 is a connecting thread, and the inner surface of the shell at this end is milled into a flange mounting plane 18 , the plane is drilled with a threaded hole for mounting the flange 17, thereby determining the axial installation position of the motor 4, the upper shell 1 is processed with a groove on the inner surface of the shell near the end of the lower shell 12; the lower shell 12 is close to The end of the female electrical connector 13 is a connecting thread, and the inner surface of the end shell is milled with a flange mounting plane 18, and the lower shell 12 is processed with a boss near the end of the upper shell 1; the boss is close to the groove end for realizing Fastened with the rotation of the upper case 1, a pressure spring 25 and a steel ball 26 are arranged in the end of the boss close to the steel ball 26; the housing positioning block 24 is installed in the gap after the upper case 1 and the lower case 12 are rotated and buckled, The housing positioning block 24 is provided with a positioning hole matching the size of the steel ball 26 for accommodating the steel ball 26, which can prevent the circumferential rotation between the upper housing 1 and the lower housing 12; the upper housing 1 and the lower housing A gasket 9 is installed between the 12 to prevent the external mud liquid from entering the inside of the variable diameter module; a guide hole is drilled on the upper shell 1 and the lower shell 12 respectively, and the two guide holes (22, 23) are distributed axially After installation, they are perpendicular to each other in the circumferential direction; wing blocks 7 are installed at both ends of the guide hole, and the wing block sealing ring 16 is installed in the sealing groove of the housing to prevent external mud liquid from entering the inside of the reducing module.

The working principle of a guiding tool for electric-driven directional crossing is: the upper casing 1 is connected to the upper intelligent drill pipe that can transmit power and signals, and the 3-phase current enters from the upper intelligent drill pipe that can transmit power and signals. The male electrical connector 2 is input into the junction box 3 in turn, and the junction box 3 transmits the main current to the female electrical connector 13 through the connection with the cable 10, and the female electrical connector 13 transmits the current to the energy transmission of the lower connection power and signal in the intelligent drill pipe, so as to realize the transmission of main current or signal; at the cable outlet joint 19, the three-phase split current enters the two motors 4 respectively, and drives the motor 4 to move; when the motor 4 rotates forward, The motor 4 drives the lead screw 8 to rotate through the shaft coupling 6, pushes the slider 15 to move linearly, and pushes the wings 7 to extend radially; The nut pair is self-locking, so it can maintain the state of the wing block 7 without being retracted under the action of external force; when the motor 4 reverses, the motor 4 drives the screw 8 to rotate through the coupling 6, and pushes the slider 15 moves in a straight line, and pulls back the wing blocks 7; so repeatedly controls two groups of wing blocks 7 individually or simultaneously, so as to realize wellbore trajectory control.

Claims (3)

1. a kind of steering tool for electric drive directional traversing, mainly by housing, service message joint (2), electric connection tailstock (20), Terminal box (3), cable assembly, reducing module and female electric connection (13) composition, housing is by upper shell (1) and lower house (12) group Into, it is characterised in that：Upper shell (1) is connected by groove with lower house (12)；Close to the electric connection tailstock of service message joint (2) (20) it is connected by screw thread with service message joint (2), the electric connection tailstock (20) close to mother's electric connection (13) passes through screw thread and mother's electricity Joint (13) is connected, and electric connection tailstock (20) and terminal box (3) are close by bolt and nut and cable outlet connection (19) respectively Connection；Cable assembly is made up of cable outlet connection (19), cable (10) and motor power-supply wire (14)；Cable (10) is three lines electricity Cable, can transmit three-phase alternating current；Cable (10) one end is connected by terminal box (3) with service message joint (2), cable (10) other end It is connected by terminal box (3) with female electric connection (13), cable outlet connection (19) closely surrounds cable (10) end；2 motors Power line (14) is each passed through cable outlet connection (19) and realizes the electrical connection of corresponding phase with cable (10)；Reducing module is by electricity Machine (4), shaft coupling (6), wing (7), leading screw (8) and sliding block (15) composition, motor (4) are connected by shaft coupling (6) and leading screw (8) Connect, sliding block (15) is enclosed on leading screw (8), wing (7) is connected by T-slot (21) with sliding block (15)；Sliding block (15) is in leading screw (8) On move along a straight line, promote wing (7) extend radially out.

2. a kind of steering tool for electric drive directional traversing according to claim 1, it is characterised in that：Sliding block (15) On be machined with two inclined-planes, two inclined-planes are symmetrically distributed vertically, are fitted for the inclined-plane with wing (7) end；Sliding block (15) T-slot (21) is machined with, for connecting wing (7), while ensuring that sliding block (15) is moved in the horizontal direction, wing is promoted (7) extended radially out along pilot hole (22,23)；Two wings (7) are connected on sliding block (15), sliding block (15) passes through screw thread and leading screw (8) connect；Leading screw (8) two ends are separately installed with shaft coupling (6) and baffle plate (11), the stroke for limiting sliding block (15).

3. a kind of steering tool for electric drive directional traversing according to claim 1, it is characterised in that：Upper shell (1) it is connection screw thread close to service message joint (2) end, the end housing inner surface milling, should into the mounting plane (18) of a ring flange Screwed hole is drilled with plane, for mounting flange (17), so that it is determined that the axially mounted position of motor (4), upper shell (1) is leaned on Nearly lower house (12) end housing inner surface processing is fluted；Lower house (12) is connection screw thread close to female electric connection (13) end, should End housing inner surface is milled with the mounting plane (18) of a ring flange, and lower house (12) is machined with close to upper shell (1) end end face Boss；Boss is used to realize that the rotation with upper shell (1) to be fastened close to groove ends, and boss is provided with pressure in steel ball (26) end Spring (25) and steel ball (26)；Housing locating piece (24) is arranged on upper shell (1) and lower house (12) rotates the gap after fastening, The positioning hole matched with steel ball (26) size is provided with housing locating piece (24), for accommodating steel ball (26), can be prevented Circumferentially rotating between housing (1) and lower house (12)；A pilot hole is drilled with respectively on upper shell (1) and lower house (12), Two pilot holes (22,23) are orthogonal in circumferencial direction after installation into axial distribution.