CN218376442U - Dipole sound insulator capable of realizing arbitrary rotation angle and logging instrument - Google Patents

Abstract

The utility model relates to the technical field of petroleum exploration well detection equipment, and specifically discloses a dipole sound insulation body capable of realizing any rotation angle, comprising an upper shell and a lower shell connected to each other, the upper shell and the The lower casings are respectively provided with fixing parts respectively used for connecting with the transmitting sound system and the receiving sound system; between the upper casing and the lower casing is provided a A rotating driving part, the driving part includes a grating DC motor for electrically connecting with ground instruments through wires and feeding back rotation parameters, the stator and rotor of the grating DC motor are respectively connected to the upper casing and the lower casing Body fixed connection. Without changing the structure of the existing remote detection dipole logging instrument, the utility model can realize the controllable multi-angle rotation of the lower instrument, realize the change of the relative orientation of the transmitting sound system and the receiving sound system, and expand the multi-angle long-distance detection The dipole receives the signal to improve the azimuth resolution of the instrument.

Description

Dipole Sound Insulator and Well Logging Tool That Can Realize Any Rotation Angle

technical field

The utility model relates to the technical field of oil exploration and well logging equipment, in particular to a dipole sound insulation body and a well logging instrument which can realize arbitrary rotation angles.

Background technique

The dipole sonic logging tool is a new generation of sonic logging tool, which is mainly used to solve the problems of sonic logging in soft formations, direct formation shear wave logging, and acquisition of formation stress parameters used to guide drilling. The multi-pole acoustic logging represented by dipole has rich formation information obtained in one downhole, and the measurement method basically covers all open-hole acoustic logging methods, and solves the problem of shear wave measurement in soft formations, etc. question. It is mainly composed of 5 parts: the main electronic circuit, the receiving section, the sound insulation body, the transmitting section and the transmitting electronic circuit. In terms of the overall layout of the instrument, the entire instrument works in the way of sending and receiving. In the work, the dipole sound wave remote detection logging is to use the dipole source X and Y axis transmitting transducers to transmit a kind of shear wave-like flexural wave into the wellbore respectively, and the four-component receiving transducer of the receiving acoustic system receives the sound passing through the deep formation. It is a logging method to obtain the geological information of deep reflectors by reflecting the deflection waves back. Since the X and Y axes of the transmitting and receiving sound systems are placed orthogonally, the azimuth consistency of the transmitting and receiving sound systems is very important for far-detection dipole logging.

In remote detection dipole shear wave logging, in order to obtain higher azimuth resolution, it is considered that changing the azimuth difference between the transmitting sound system and the receiving sound system into a controllable relative azimuth difference will help solve the The azimuth characteristic in the process of measuring the shear wave reflected wave improves the shortcomings of the 180 degree uncertainty of the reflector. Therefore, this sound insulator is developed to enhance the azimuth resolution of the long-distance detection of the dipole shear wave.

Based on this, how to enhance the azimuth resolution of dipole shear wave remote detection is a technical problem that those skilled in the art need to solve at present.

Utility model content

The purpose of this utility model is to provide a dipole sound insulation body that can realize any rotation angle, and can realize the controllable multi-angle rotation of the lower instrument without changing the structure of the existing remote detection dipole logging instrument , realize the change of the relative azimuth of the transmitting sound system and the receiving sound system, and expand the multi-angle long-distance detection dipole receiving signal to improve the azimuth resolution of the instrument.

In order to achieve the above purpose, the utility model provides a dipole sound insulation body that can realize any rotation angle, including an upper shell and a lower shell connected to each other, and the upper shell and the lower shell are respectively provided with The fixing parts are respectively used to connect with the emitting sound system and the receiving sound system; a driving part is provided between the upper casing and the lower casing to realize the relative rotation of the upper casing and the lower casing, so The driving part includes a grating DC motor for electrically connecting with ground instruments through wires and feeding back rotation parameters. The stator and rotor of the grating DC motor are fixedly connected to the upper casing and the lower casing respectively.

Further, a sealing joint is provided between the rotor and the upper housing or the lower housing, and the end of the sealing joint extends into the upper housing and/or the lower housing, the A sealing ring is provided between the sealing joint and the upper casing and/or the lower casing.

Further, it also includes pressure bearing blocks arranged at both ends of the dipole sound insulator, and the pressure bearing blocks at both ends are connected to the slip ring arranged between the upper casing and the lower casing through wires electrical connection.

Further, it also includes a pressure balance device arranged on the upper casing and/or the lower casing.

Further, the fixing part is provided with a protective cap.

The application also discloses a well logging instrument, which includes the above-mentioned dipole sound insulator that can realize any rotation angle and is arranged between the transmitting sound system and the receiving sound system.

Compared with the existing technology, the utility model can realize the controllable multi-angle rotation of the lower instrument without changing the structure of the existing remote detection dipole logging instrument, and realize the relative orientation of the transmitting sound system and the receiving sound system. Change, so that the required receiving azimuth of the X, Y sound source and the receiving signal of the four-component receiving transducer in the lower transmitting sound system and receiving sound system changes, providing multi-angle receiving information components in the wellbore, expanding multi-angle long-distance detection The dipole receives the signal to improve the azimuth resolution of the instrument.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description It is only an embodiment of the utility model, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

Accompanying drawing 1 is the sectional structural representation of the utility model;

In the drawings: 1 is a protective cap, 2 is a lower casing, 3 is a grating DC motor, 4 is a sealing joint, 5 is a slip ring, 6 is a pressure balance device, 7 is an upper casing, and 8 is a pressure block.

Detailed ways

The core of the utility model is to provide a dipole sound insulation body that can realize any rotation angle, and can realize the controllable multi-angle rotation of the lower instrument without changing the structure of the existing remote detection dipole logging instrument , realize the change of the relative orientation of the transmitting sound system and the receiving sound system, and change the required receiving orientation of the X, Y sound source and the receiving signal of the four-component receiving transducer in the lower transmitting sound system and receiving sound system, and provide the wellbore The multi-angle receiving information component expands the multi-angle long-distance detection dipole receiving signal to improve the azimuth resolution of the instrument.

In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments.

As shown in Figure 1, a dipole sound insulator that can realize any rotation angle includes an upper shell 7 and a lower shell 2 connected to each other, and the upper shell 7 and the lower shell 2 are respectively arranged There are fixed parts respectively used to connect with the transmitting sound system and the receiving sound system; a device is provided between the upper casing 7 and the lower casing 2 to realize the relative rotation of the upper casing 7 and the lower casing 2 The drive part, the drive part includes a grating DC motor 3 for electrically connecting with ground instruments through wires and feeding back rotation parameters, the stator and rotor of the grating DC motor 3 are respectively connected to the upper casing 7 and the The lower casing 2 is fixedly connected.

When working, the DC power is supplied to the grating DC motor 3 before the surface enters the well, and the rotation angle of the instrument is calculated by calculating the number of rotations of the grating motor. When the motor is installed, when the initial angle corresponds to the standard line of the instrument, the motor rotates a 360° grating encoder to output a fixed number of pulses, then the rotation angle represented by each pulse = 360°/pulse number, so that the motor can be obtained After rotating for a certain angle, output the angle represented by the pulse number, that is, multiply the rotated pulse number by the rotation angle represented by each pulse number to calculate the relative angle of the upper receiving sound system relative to the lower transmitting sound system. This device can realize the controllable multi-angle rotation of the lower instrument without changing the structure of the existing remote detection dipole logging instrument, realize the relative orientation change of the transmitting sound system and the receiving sound system, and make the lower transmitting sound system and the receiving sound system Receive the required receiving azimuth change of the X, Y sound source and the receiving signal of the four-component receiving transducer in the sound system, provide multi-angle receiving information components in the wellbore, and expand multi-angle long-distance detection dipole receiving signals to improve Instrument azimuth resolution.

In a specific embodiment, further, a sealing joint 4 is provided between the rotor and the upper housing 7 or the lower housing 2, and the two ends of the sealing joint 4 respectively protrude into the upper A sealing ring is provided between the casing 7 and/or the lower casing 2 , the sealing joint 4 and the upper casing 7 and/or the lower casing 2 . In the specific operation, take the fixed connection between the stator of the grating DC motor 3 and the lower housing 2 as an example, at this time, the rotor of the grating DC motor 3 is fixedly connected with a sealing joint 4, the sealing joint 4 is cylindrical, and the sealing joint 4 passes through The connecting device is fixedly connected with the upper casing 7, and when the grating DC motor 3 is working, the relative rotation between the upper casing 7 and the lower casing 2 is realized.

In a specific embodiment, it further includes pressure bearing blocks 8 arranged at both ends of the dipole sound insulator, and the pressure bearing blocks 8 at both ends are connected to the upper shell 7 through wires. It is electrically connected with the slip ring 5 between the lower housing 2 . Both the pressure-bearing block 8 and the slip ring 5 are prior art, the pressure-bearing block 8 is mainly set to realize the electrical connection between the upper and lower parts of the pressure-bearing block 8 in an isolated state, and the slip ring 5 is the upper and lower parts of the pressure-bearing block 8. A sliding connection between the electrical connection means between the housing 7 and the lower housing 2 is provided.

In a specific embodiment, further, it also includes a pressure balance device 6 arranged on the upper casing 7 and/or the lower casing 2, and the pressure balance device 6 is a protection device commonly used in logging instruments. The device mainly uses the reciprocating movement of the piston under the action of external pressure to realize the pressure balance between the inside and outside of the instrument, and protect the isolation setting between the environment on the side of the piston and the external environment. Through the pressure balance device 6, the internal equipment of the instrument can be effectively guaranteed. The environment is clean, and the accidents that damage the equipment due to external pressure changes are effectively avoided.

In a specific embodiment, further, the fixing part is provided with a protective cap 1 .

The application also discloses a well logging instrument, including the above-mentioned dipole sound insulation body which can realize any rotation angle and is arranged between the transmitting sound system and the receiving sound system, so that the angle between the transmitting end and the receiving end can be adjusted , to achieve the purpose of expanding the multi-angle long-distance detection dipole receiving signal to improve the azimuth resolution of the instrument.

Finally, it should also be noted that in this text, relational terms such as first and second etc. are only used to distinguish one entity or operation from another, and do not necessarily require or imply that these entities or operations, any such actual relationship or order exists. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other. As for the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and for the related information, please refer to the description of the method part.

The above description of the disclosed embodiments enables those skilled in the art to realize or use the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims (6)

1. The utility model provides a can realize arbitrary rotation angle's dipole sound insulator which characterized in that: the acoustic microphone comprises an upper shell (7) and a lower shell (2) which are connected with each other, wherein the upper shell (7) and the lower shell (2) are respectively provided with fixing parts which are respectively used for being connected with a transmitting acoustic system and a receiving acoustic system; go up casing (7) with be provided with the realization down between casing (2) go up casing (7) with casing (2) relative pivoted drive division down, drive division is including being used for through the wire with ground instrument electricity be connected, and feedback rotating parameter's grating direct current motor (3), the stator and the rotor of grating direct current motor (3) respectively with go up casing (7) with casing (2) fixed connection down.

2. The dipole sound insulator capable of realizing any rotation angle as claimed in claim 1, wherein: the rotor with go up casing (7) or be provided with sealing joint (4) between casing (2) down, the tip of sealing joint (4) stretches into go up casing (7) and/or casing (2) down, sealing joint (4) with go up casing (7) and/or be provided with the sealing washer between casing (2) down.

3. The dipole sound insulator capable of realizing any rotation angle as claimed in claim 1, wherein: the dipole sound insulator is characterized by further comprising bearing blocks (8) arranged at two ends of the dipole sound insulator, wherein the bearing blocks (8) arranged at the two ends are electrically connected with a slip ring (5) arranged between the upper shell (7) and the lower shell (2) through wires.

4. The dipole sound insulator capable of realizing any rotation angle as claimed in claim 1, wherein: the device also comprises a pressure balancing device (6) arranged on the upper shell (7) and/or the lower shell (2).

5. The dipole sound insulator capable of realizing any rotation angle as claimed in claim 1, wherein: the fixing part is provided with a protective cap (1).

6. A logging tool, comprising: the dipole sound insulator capable of realizing any rotation angle, which is arranged between a transmitting sound system and a receiving sound system, is arranged according to any one of claims 1 to 5.

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