CN217354355U

CN217354355U - High-speed continuous wave mud signal generator equipment

Info

Publication number: CN217354355U
Application number: CN202220213733.3U
Authority: CN
Inventors: 耿淦; 于淼; 曹勋; 顾鹏; 赵瑞颖
Original assignee: Schlumberger Oilfield Technologies Shandong Co ltd
Current assignee: Schlumberger Oilfield Technologies Shandong Co ltd
Priority date: 2022-01-26
Filing date: 2022-01-26
Publication date: 2022-09-02
Anticipated expiration: 2032-01-26

Abstract

The utility model discloses a high-speed continuous wave mud signal generator device, wherein a fishing head is connected with an outer cylinder A, an outer cylinder B, a pressure-resistant cylinder A, a pressure-resistant cylinder B and a pressure-resistant cylinder C in sequence; and a motor assembly is arranged in the compression cylinder C and connected with a transmission shaft, a piston assembly is arranged on the outer wall of the transmission shaft, the top end of the transmission shaft is connected with a locking nut through a rotor, and the inner wall of the outer cylinder A is connected with a stator. The position sensor of the utility model is arranged at the output shaft end of the motor assembly, thus eliminating the influence of the idle stroke of the speed reducer on the control performance of the motor; the motor assembly is used for directly driving the rotor, the rotor and the stator form a rotary valve, the signal transmission rate is high, and the error rate is low; the pressure balancing module keeps the internal pressure and the external pressure of the compression resistant cylinder A consistent, and the compression resistance of the compression resistant cylinder A is improved; the wireless measurement-while-drilling system is simple in structure, reliable in work, suitable for a wireless measurement-while-drilling system and capable of solving the problems of low information transmission speed and high transmission error rate.

Description

High-speed continuous wave mud signal generator equipment

Technical Field

The utility model belongs to the technical field of the oil drilling engineering technique and specifically relates to a high-speed continuous wave mud signal generator equips is related to.

Background

During the drilling process, especially during the drilling process of wells with complex structures such as horizontal wells, extended reach wells, branch wells and the like, various downhole parameters needing to be known in real time by well site personnel are completed by Measurement While Drilling (MWD) and Logging While Drilling (LWD) systems. The measurement while drilling system and the logging while drilling system consist of an underground controller, various underground parameter measuring instruments, a measurement while drilling information transmission system and a ground information receiving, processing and displaying system. The information transmission system is one of the key technologies.

However, since the last 90 years, the information transmission rate of measurement while drilling has not been completed, and the information transmission rate has become a bottleneck in the development of measurement while drilling and well logging systems. At present, the information transmission methods of measurement while drilling mainly include four methods: the cable method, the slurry pulse method, the acoustic wave method and the electromagnetic wave method have limitations and application ranges, and the slurry pulse method is most widely and reliably applied. The mud pulse method is divided into three transmission modes of negative pulse, positive pulse and continuous wave, and the most widely used positive pulse transmission mode is currently used.

Among them, the hydraulic drive reciprocating signal generator with pilot control is the most common form of mud positive pulse transmission mode. A hydraulic control loop drives a main throttle valve to reciprocate to generate a pressure pulse signal, and a medium of the hydraulic control loop can be drilling fluid or hydraulic oil. The hydraulic control loop of the reciprocating throttling type signal generator taking the drilling fluid as a medium has a simple structure, but the drilling fluid has the problems of serious pollution, non-Newtonian flow and change of the property along with the change of the drilling working condition, so that the working frequency is very low, and only discrete pressure pulse signals can be generated; the reciprocating throttling type signal generator with hydraulic oil as a medium needs to establish a set of hydraulic power system, has a very complex structure, and has a low working frequency generally because the application of high-performance hydraulic elements is limited due to narrow space and severe environment.

Practice proves that a drilling fluid pressure fluctuation signal transmission mode is the most practical and reliable method for wirelessly transmitting data from underground to the ground at present, but the outstanding problem exists that parameters measured while drilling are more and more along with the successful development and application of various underground new measuring instruments, and the measurement of the geometrical parameters such as the initial well deviation, the direction, the tool face and the like is developed to the measurement of a plurality of environmental and geological parameters such as the drilling pressure, the torque, the pressure, the temperature, the natural gamma, the formation resistivity and the like. At present, the signal rate of a drilling fluid pressure signal generator is relatively too low, so that the analysis and research on the working mechanism and the characteristics of the hydraulic signal generator are very necessary for developing a high-speed signal generator and realizing the efficient and reliable transmission of underground measurement data.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve exist among the prior art not enough, and provide a high-speed continuous wave mud signal generator equipment.

The utility model discloses new technical scheme is: a high-speed continuous wave mud signal generator device comprises a fishing head, an outer barrel A, a stator, a locking nut, a rotor, a transmission shaft, an outer barrel B, a hydraulic oil hole, an anti-pressure barrel A, a piston assembly, a mud hole, an anti-pressure barrel B, a coupler, a speed reducer, a motor assembly and an anti-pressure barrel C, wherein the fishing head is connected with the top of the outer barrel A through threads; resistance to compression section of thick bamboo C in install motor assembly, motor assembly output and retarder connection, the reduction gear pass through the shaft coupling and be connected with the transmission shaft, transmission shaft outer wall and resistance to compression section of thick bamboo A in install piston assembly, resistance to compression section of thick bamboo A outer wall is equipped with hydraulic pressure oilhole and mud hole, hydraulic pressure oil passes through the hydraulic pressure oilhole get into the hydraulic pressure intracavity, mud passes through the mud hole get into the mud intracavity, hydraulic pressure oil chamber and mud chamber establish in resistance to compression section of thick bamboo A, the transmission shaft top pass through the screw thread and be connected with the rotor, the rotor top install lock nut through the screw thread, lock nut department just urceolus A inner wall threaded connection have the stator.

The motor assembly comprises a direct current brushless motor, a speed reducer and a position sensor; the brushless DC motor is arranged at the bottom of the motor assembly, the speed reducer is arranged in the middle of the motor assembly, the position sensor is arranged at the top of the motor assembly, and the position sensor is arranged at the output shaft end of the motor assembly.

The speed reducer is a planetary gear speed reducer.

The shaft coupling is an elastic shaft coupling.

The stator and the rotor form a rotary valve.

The piston assembly, the hydraulic oil cavity and the slurry cavity form a pressure balance module.

And the piston assembly and the inner wall of the compression cylinder A are provided with sealing rings.

The utility model discloses the beneficial effect who produces does: the position sensor of the utility model is arranged at the output shaft end of the motor assembly, thus eliminating the influence of the idle stroke of the speed reducer on the control performance of the motor; the motor assembly is used for directly driving the rotor, the rotor and the stator form a rotary valve, the signal transmission rate is high, and the error rate is low; the pressure balancing module keeps the internal pressure and the external pressure of the compression cylinder A consistent, and the compression capacity of the compression cylinder A is improved; the wireless measurement-while-drilling system is simple in structure, reliable in work, suitable for a wireless measurement-while-drilling system and capable of solving the problems of low information transmission speed and high transmission error rate.

Drawings

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

Fig. 2 is a schematic structural diagram of a pressure balancing module.

Fig. 3 is a schematic structural view showing a closed state of the rotary valve.

Fig. 4 is a schematic structural view showing the open state of the rotary valve.

Wherein: 1. the hydraulic oil-well fishing device comprises a fishing head, 2, a stator, 3, outer cylinders A and 4, a locking nut, 5, a rotor, 6, a transmission shaft, 7, outer cylinders B and 8, a hydraulic oil hole, 9, compression-resistant cylinders A and 901, a hydraulic oil cavity, 902, a slurry cavity, 10, a piston assembly, 11, a slurry hole, 12, compression-resistant cylinders B and 13, a coupler, 14, a speed reducer, 15, a motor assembly, 16 and a compression-resistant cylinder C.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

A high-speed continuous wave mud signal generator device comprises a fishing head 1, an outer cylinder A3, a stator 2, a lock nut 4, a rotor 5, a transmission shaft 6, an outer cylinder B7, a hydraulic oil hole 8, a pressure resistant cylinder A9, a piston assembly 10, a mud hole 11, a pressure resistant cylinder B12, a coupler 13, a speed reducer 14, a motor assembly 15 and a pressure resistant cylinder C16, wherein the fishing head 1 is connected with the top of the outer cylinder A3 through threads, the bottom of the outer cylinder A3 is connected with the top of the outer cylinder B7, the bottom of the outer cylinder B7 is connected with the top of the pressure resistant cylinder A9, the bottom of the pressure resistant cylinder A9 is connected with the top of the pressure resistant cylinder B12, and the bottom of the pressure resistant cylinder B12 is connected with the top of the pressure resistant cylinder C16; the anti-pressure cylinder C16 in install motor assembly 15, motor assembly 15 output and reduction gear 14 be connected, reduction gear 14 pass through shaft coupling 13 and be connected with

transmission shaft

6, 6 outer walls of transmission shaft and anti-pressure cylinder A9 in install piston assembly 10, anti-pressure cylinder A9 outer wall is equipped with hydraulic oil hole 8 and mud hole 11, hydraulic oil pass through hydraulic oil hole 8 get into hydraulic oil chamber 901 in, mud pass through mud hole 11 get into mud chamber 902 in, hydraulic oil chamber 901 and mud chamber 902 establish in anti-pressure cylinder A9, 6 tops of transmission shaft pass through the screw thread and be connected with rotor 5, rotor 5 top install lock nut 4 through the screw thread, lock nut 4 department and urceolus A3 inner wall screw thread connection have stator 2.

The motor assembly 15 comprises a brushless DC motor, a speed reducer 14 and a position sensor; the brushless DC motor is arranged at the bottom of the motor assembly 15, the speed reducer 14 is arranged in the middle of the motor assembly 15, the position sensor is arranged at the top of the motor assembly 15, and the position sensor is arranged at the output shaft end of the motor assembly 15.

The reducer 14 is a planetary gear reducer.

The coupling 13 is an elastic coupling.

The stator 2 and the rotor 5 constitute a rotary valve.

The piston assembly 10, the hydraulic oil chamber 901 and the slurry chamber 902 form a pressure balance module.

And sealing rings are arranged on the inner walls of the piston assembly 10 and the pressure resistant cylinder A9.

The high-speed continuous wave mud signal generator is arranged in a non-magnetic drill collar when working underground; the hydraulic oil chamber 901 is filled with hydraulic oil through the hydraulic oil hole 8, and slurry enters the slurry chamber 902 through the slurry hole 11 of the compression resistant cylinder a 9. After the mud enters the mud cavity 902, the piston assembly 10 is pushed upwards, so that the hydraulic oil cavity 901 is reduced, the internal pressure of the hydraulic oil cavity 901 is increased along with the reduction of the space under the extrusion of the hydraulic oil, and the internal and external pressures of the mud signal generator are kept consistent until the internal pressure of the hydraulic oil cavity 901 is basically the same as the internal pressure of the mud cavity 902, so that the pressure resistance of the pressure-resistant cylinder A9 is improved, and the internal structural parts of the generator are protected.

The high-speed continuous wave mud signal generator equipment needs to work together with other modules of a wireless measurement-while-drilling system when applied. When the generator normally works, the motor assembly 15 drives the transmission shaft 6 and the rotor 5 to rotate through the elastic coupling 13, so that the rotor 5 rotates for a certain angle, the rotary valve is in a closed state, after a certain time, the rotor 5 rotates, the rotary valve is in an open state, and in such a reciprocating motion, the relative motion of the rotor 5 and the stator 2 hinders the flow of mud in the drill collar, and a positive pulse mud pressure pulse signal is generated.

The utility model discloses an above has given the utility model discloses an implementation and principle still need carry out detailed design to the concrete structure of each part in practical application, and any other realization forms based on this patent principle all are within the scope of this patent.

Claims

1. The utility model provides a high-speed continuous wave mud signal generator equips, includes fishing head, urceolus A, stator, lock nut, rotor, transmission shaft, urceolus B, hydraulic pressure oilhole, resistance to compression section of thick bamboo A, piston assembly, mud hole, resistance to compression section of thick bamboo B, shaft coupling, reduction gear, motor assembly and resistance to compression section of thick bamboo C, its characterized in that: the fishing head is connected with the top of the outer cylinder A through threads, the bottom of the outer cylinder A is connected with the top of the outer cylinder B, the bottom of the outer cylinder B is connected with the top of the compression cylinder A, the bottom of the compression cylinder A is connected with the top of the compression cylinder B, and the bottom of the compression cylinder B is connected with the top of the compression cylinder C; resistance cylinder C in install the motor assembly, motor assembly output and retarder connection, the reduction gear pass through the shaft coupling and be connected with the transmission shaft, transmission shaft outer wall and resistance cylinder A in install piston assembly, resistance cylinder A outer wall is equipped with hydraulic pressure oilhole and mud hole, hydraulic oil passes through the hydraulic pressure oilhole get into the hydraulic oil intracavity, mud passes through the mud hole get into the mud intracavity, hydraulic pressure oil chamber and mud chamber establish in resistance cylinder A, the transmission shaft top pass through the screw thread and be connected with the rotor, the rotor top install lock nut through the screw thread, lock nut department just urceolus A inner wall threaded connection have the stator.

2. A high speed continuous wave mud signal generator apparatus according to claim 1 wherein: the motor assembly comprises a direct current brushless motor, a speed reducer and a position sensor; the brushless DC motor is arranged at the bottom of the motor assembly, the speed reducer is arranged in the middle of the motor assembly, the position sensor is arranged at the top of the motor assembly, and the position sensor is arranged at the output shaft end of the motor assembly.

3. A high speed continuous wave mud signal generator apparatus according to claim 1 or 2 wherein: the speed reducer is a planetary gear speed reducer.

4. A high speed continuous wave mud signal generator apparatus according to claim 1, wherein: the shaft coupling is an elastic shaft coupling.

5. A high speed continuous wave mud signal generator apparatus according to claim 1, wherein: the stator and the rotor form a rotary valve.

6. A high speed continuous wave mud signal generator apparatus according to claim 1 wherein: the piston assembly, the hydraulic oil cavity and the slurry cavity form a pressure balance module.

7. A high speed continuous wave mud signal generator apparatus according to claim 1, wherein: and the piston assembly and the inner wall of the compression cylinder A are provided with sealing rings.