Probe shell of acoustic logging instrument

Abstract

The invention relates to the technical field of logging equipment, and discloses an acoustic logging instrument probe shell, a receiving part shell, a sound insulation shell assembly and a transmitting part shell which are axially connected are arranged in an acoustic probe shell assembly, and the acoustic probe shell assembly is divided into three parts, so that the overall compressive strength of the shell can be improved; meanwhile, sound insulation of the sound insulation section is changed into sound insulation of internally and externally staggered but not cut-through ring grooves from original circumferentially staggered cut-through cutting grooves, and gaskets are arranged in the ring grooves, so that the compressive strength of the sound insulation part is greatly enhanced, meanwhile, the mandrel assemblies are not directly communicated, the middles of the mandrel assemblies are directly connected through the sound insulation shell, the penetration of the mandrel part of the whole instrument is reduced, and the sound insulation efficiency is improved. Therefore, a part of direct wave signals are reduced; the sound-proof shell assembly comprises a sound-proof shell, one end of the sound-proof shell is connected to the receiving part mandrel assembly, and the other end of the sound-proof shell is connected to the transmitting part mandrel assembly; a sound insulation structure is arranged on the sound insulation shell, the compressive strength of the shell is improved, and the signal influence of direct waves is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of well logging equipment, in particular to a probe housing of an acoustic well logging instrument. Background Art

[0002] Acoustic logging is a type of logging method that studies the geological characteristics of the well wall formation and the engineering conditions of the wellbore by measuring the acoustic characteristics of the well wall medium. It is widely used in many fields such as oil field exploration and exploitation, engineering geophysical prospecting, etc. The basic principle of acoustic logging is that when sound waves propagate in different media, their propagation speeds vary greatly, and their acoustic characteristics such as amplitude attenuation and frequency change are also different. Modern logging technology estimates the properties of the formation outside the well, such as the thickness, porosity, oil saturation, water saturation, gas saturation, permeability, etc. of the formation by measuring the above-mentioned acoustic parameters in the formation and the wellbore, and combining other logging methods such as electrical and radioactive methods. In addition, acoustic logging data can also be used to analyze formation stress, detect formation fractures, detect the cement bonding state in cased wells, evaluate cementing quality, and so on.

[0003] There are many different types of instruments used in acoustic logging. Their common feature is that they can transmit and receive acoustic waves. Different instruments transmit and receive different types of acoustic waves to achieve different detection purposes. Modern acoustic logging technology has developed rapidly. Currently, the commonly used acoustic logging methods are mainly the following: acoustic velocity logging, acoustic amplitude logging, long-source-distance acoustic full-wave logging, and acoustic imaging logging.

[0004] Sound waves are a form of motion generated by the mechanical vibration of matter. They are transmitted from near to far through the interaction of particles within the matter. The frequency of sound waves audible to the human ear is between 20Hz and 20kHz. Mechanical waves below 20Hz are called infrasound waves, and mechanical waves above 20kHz are called ultrasonic waves. At present, the frequency of sonic logging applications is between 15kHz and 30kHz, so they are usually called sound waves. Since sound waves are generated by elastic deformation of elastic bodies under the action of external forces, the speed, frequency, and amplitude of sound waves propagating in matter are closely related to the elasticity and elastic mechanical parameters of the object.

[0005] In recent years, with the deepening of geological and oil exploration, the expectations and requirements for logging instruments have become higher and higher. Acoustic logging is one of the important methods of oil logging. The currently used acoustic logging technology uses a transmitting transducer to emit sound waves underground, which propagate in the underground medium. After a certain period of attenuation, they are received by the receiving transducer. By analyzing the attenuated sound wave signal, the relevant geological structure of the underground can be judged.

[0006] Acoustic wave instruments are generally divided into two parts: electronic circuits and probes. The probe part is equipped with acoustic wave transmitting and receiving crystals, which is the transmitting and receiving part of the instrument signal. The control and processing of the transmitting and receiving signals are performed by the electronic circuit part.

[0007] The probe part of the sonic logging instrument mainly includes the probe housing, the core shaft assembly, and the core shaft assembly protective cover. The probe housing is connected to the upper and lower joints and is used to withstand the external forces (tension, pressure, and torque) exerted on the instrument. It is the supporting body of the probe part. The transmitting and receiving crystals of the instrument are installed on a core shaft, and the assembly is the core shaft assembly. The core shaft assembly is installed in a protective cover to prevent mud from entering the interior of the instrument. The protective cover is filled with silicone oil to balance the pressure inside and outside the instrument. The core shaft assembly and the core shaft assembly protective cover are both installed in the probe housing.

[0008] The acoustic wave instrument is used to detect information related to the formation. After the transmitting crystal transmits the signal, it is hoped that the signal received by the receiving crystal is as close to the signal transmitted from the formation as possible. Because the instrument itself cannot be disconnected, it is inevitable that some acoustic wave signals will be transmitted from the instrument body. This part of the signal is called a direct wave, which is not conducive to measurement. The instrument design should reduce the impact of this part of the signal as much as possible, which requires corresponding processing between the transmitting and receiving parts of the probe housing.

[0009] At present, the probe shell is one-piece. The problem is that in order to reduce the signal strength of the direct wave, a sound insulation groove is processed on the shell between the transmitter and the receiver. This groove will cut the shell. Three sound insulation grooves are processed at the same axial position and are evenly distributed along the circumference of the shell. A part will be left between the grooves without cutting off. The axially adjacent sound insulation grooves are staggered at a certain angle, so that the shell is not connected as a whole. After the sound insulation grooves are processed, the strength of the shell is greatly reduced, and it cannot meet the operation requirements of some wells. Summary of the invention

[0010] In order to overcome the defects of the above-mentioned prior art, the purpose of the present invention is to provide a sonic logging instrument probe housing to solve the technical problem that the sonic logging instrument probe housing in the prior art is insufficient in strength and cannot meet the direct-push logging requirements of complex well conditions such as high-angle and horizontal wells.

[0011] The present invention is achieved through the following technical solutions:

[0012] A probe housing of an acoustic well logging instrument comprises an acoustic probe housing assembly, one end of the acoustic probe housing assembly is connected to an upper joint of the probe housing, and the other end is connected to a lower joint of the probe housing; the acoustic probe housing assembly comprises an axially connected receiving part housing, a sound insulation housing assembly and a transmitting part housing; the end of the receiving part housing is connected to the upper joint of the probe housing, and a receiving part spindle assembly is arranged inside the receiving part housing, and a receiving part spindle assembly protective sleeve is sleeved on the receiving part spindle assembly; the end of the transmitting part housing is connected to the lower joint of the probe housing, and a transmitting part spindle assembly is arranged inside the transmitting part housing, and a transmitting part spindle assembly is sleeved on the transmitting part spindle assembly protective sleeve; the sound insulation housing assembly comprises a sound insulation housing, one end of the sound insulation housing is connected to the receiving part spindle assembly, and the other end is connected to the transmitting part spindle assembly; a sound insulation structure is arranged on the sound insulation housing.

[0013] Preferably, the sound insulation structure of the sound insulation shell includes a plurality of gasket sound insulation grooves arranged in sequence along the long side shell direction of the sound insulation shell, the gasket sound insulation groove is an annular groove structure, the gasket sound insulation groove is inserted into the sound insulation groove gasket, and a plurality of gasket anti-drop sleeves are sleeved along the long side shell direction of the sound insulation shell, which are used to cover the gasket sound insulation groove and press on the sound insulation groove gasket.

[0014] Furthermore, the sound insulation groove gasket includes a plurality of arc-shaped gasket structures, gasket separation grooves are provided between the plurality of arc-shaped gasket structures, the plurality of arc-shaped gasket structures are annularly embedded in a gasket sound insulation groove, and are compressed by a gasket anti-drop sleeve.

[0015] Furthermore, a plurality of gasket bosses are respectively arranged on both sides of the sound insulation groove gasket, wherein the plurality of gasket bosses on both sides of the sound insulation groove gasket are respectively staggered.

[0016] Furthermore, gaps are provided between the plurality of gasket anti-drop sleeves.

[0017] Furthermore, the outer diameters of the plurality of gasket anti-dropping sleeves are equal, and the outer diameters of the plurality of gasket anti-dropping sleeves are smaller than the outer diameters of the receiving part housing and the transmitting part housing.

[0018] Preferably, the sound insulation structure of the sound insulation shell further comprises a plurality of outer sound insulation grooves and inner sound insulation grooves which are arranged in sequence and in correspondence along the long side direction of the outer wall and the inner wall of the sound insulation shell, and the outer sound insulation grooves and the inner sound insulation grooves are both annular grooves.

[0019] Preferably, a plurality of outer sound insulation grooves and inner sound insulation grooves are staggered on the inner and outer walls of the sound insulation shell.

[0020] Preferably, a spindle mounting hole and a spindle assembly protective cover mounting surface are respectively provided at both ends of the sound insulation shell, the receiving part spindle assembly and the receiving part spindle assembly protective cover are arranged on the spindle mounting hole and the spindle assembly protective cover mounting surface at one end of the sound insulation shell, and the transmitting part spindle assembly and the transmitting part spindle assembly protective cover are arranged on the spindle mounting hole and the spindle assembly protective cover mounting surface at the other end of the sound insulation shell.

[0021] Preferably, a connecting column mounting hole and a connecting column fixing screw mounting hole are respectively provided at both ends of the sound insulation shell, and the connecting column fixing screw mounting holes are arranged in the connecting column mounting holes. The receiving part shell and the transmitting part shell are respectively connected to the connecting column mounting holes at both ends of the sound insulation shell through connecting columns, and then threadedly connected to the connecting column fixing screw mounting holes through the connecting column fixing screws.

[0022] Compared with the prior art, the present invention has the following beneficial technical effects:

[0023] The invention provides a probe shell of an acoustic wave logging instrument. An axially connected receiving part shell, a sound insulation shell assembly and a transmitting part shell are arranged in the acoustic wave probe shell assembly. The acoustic wave probe shell assembly is divided into three parts. Since the strength of the joints between each section is greater than the strength of the other parts of the shell, the overall compressive strength of the shell can be improved. At the same time, the sound insulation section is changed from the original circumferentially staggered cut-through groove sound insulation to the inner and outer staggered but non-cut-through annular groove sound insulation. At the same time, a gasket is arranged in the annular groove, so that the compressive strength of the sound insulation part is greatly enhanced. At the same time, the core shaft assembly is not directly connected, but is directly connected in the middle through the sound insulation shell, and the instrument as a whole reduces the penetration of the core shaft part, thereby reducing a part of the direct wave signal; the sound insulation shell assembly comprises a sound insulation shell, one end of the sound insulation shell is connected to the receiving part core shaft assembly, and the other end is connected to the transmitting part core shaft assembly; a sound insulation structure is arranged on the sound insulation shell, so as to improve the compressive strength of the shell and reduce the signal influence of the direct wave.

[0024] Furthermore, the sound insulation structure of the sound insulation shell includes a plurality of gasket sound insulation grooves arranged in sequence along the long side shell direction of the sound insulation shell, the gasket sound insulation groove is an annular groove structure, the sound insulation groove gasket is inserted into the gasket sound insulation groove, the sound insulation groove gasket can effectively improve the compressive strength of the shell assembly, and a plurality of gasket anti-drop sleeves are arranged along the long side shell direction of the sound insulation shell, which are used to cover the gasket sound insulation groove and press on the sound insulation groove gasket to prevent the sound insulation groove gasket from falling off.

[0025] Furthermore, the sound insulation groove gasket includes a plurality of arc-shaped gasket structures, gasket separation grooves are provided between the plurality of arc-shaped gasket structures, and the plurality of arc-shaped gasket structures are annularly embedded in a gasket sound insulation groove, so that the sound insulation groove gasket is conveniently installed in the sound insulation shell.

[0026] Furthermore, a plurality of gasket bosses are respectively arranged on both sides of the sound insulation groove gasket, wherein the plurality of gasket bosses on both sides of the sound insulation groove gasket are respectively staggered to prevent direct transmission of sound waves.

[0027] Furthermore, gaps are provided between the plurality of gasket anti-dropping sleeves to reduce the influence of the acoustic signal noise caused by the anti-dropping sleeves.

[0028] Furthermore, the outer diameters of several gasket anti-dropping sleeves are equal, and the outer diameters of several gasket anti-dropping sleeves are smaller than the outer diameters of the receiving part shell and the transmitting part shell. The receiving part shell and the transmitting part shell block several gasket anti-dropping sleeves to prevent them from falling.

[0029] Furthermore, the sound insulation structure of the sound insulation shell also includes a plurality of outer sound insulation grooves and inner sound insulation grooves which are arranged in sequence along the long side direction of the outer wall and the inner wall of the sound insulation shell. The outer sound insulation grooves and the inner sound insulation grooves are both annular grooves. The outer sound insulation grooves and the inner sound insulation grooves play the role of main body sound insulation, effectively reducing signal noise. The annular sound insulation grooves not only meet the requirements of instrument signal quality, but also meet the requirements of instrument signal quality. Because the core shaft for installing the crystal is split, the upper and lower parts are directly connected to the shell, which reduces the direct wave caused by the core shaft part, and can effectively improve the signal quality of the instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic cross-sectional view of the overall structure of a probe housing of an acoustic logging instrument according to an embodiment of the present invention;

[0031] Figure 2 A schematic diagram of a probe housing of an acoustic logging instrument according to an embodiment of the present invention;

[0032] Figure 3 A schematic diagram of a sound insulation component of a probe housing of an acoustic logging instrument according to an embodiment of the present invention;

[0033] Figure 4 for Figure 3 The enlarged schematic diagram of part A in the middle;

[0034] Figure 5 A schematic diagram of a sound insulation housing of a probe housing of an acoustic logging instrument according to an embodiment of the present invention;

[0035] Figure 6 A side view of a sound insulation shell gasket according to an embodiment of the present invention;

[0036] Figure 7 A front view of a sound insulation shell gasket according to an embodiment of the present invention;

[0037] Figure 8 A schematic structural diagram of a gasket anti-drop sleeve according to an embodiment of the present invention;

[0038] In the figure: 11-sonic wave probe housing assembly; 12-receiving part spindle assembly; 13-receiving part spindle assembly protective cover; 14-transmitting part spindle assembly; 15-transmitting part spindle assembly protective cover; 16-probe housing upper joint; 17-probe housing lower joint; 21-receiving part housing; 22-sound insulation housing assembly; 23-transmitting part housing; 24-connecting column; 25-connecting column fixing screw; 31-sound insulation housing; 32-sound insulation groove gasket; 33-gasket anti-drop sleeve; 41-spindle mounting hole; 42-spindle assembly protective cover mounting surface; 43-connecting column mounting hole; 44-connecting column fixing screw mounting hole; 45-external sound insulation groove; 46-internal sound insulation groove; 47-gasket sound insulation groove; 51-gasket boss; 52-gasket separation groove. DETAILED DESCRIPTION

[0039] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0040] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0041] The purpose of the present invention is to provide a probe housing for an acoustic logging instrument to solve the technical problem that the acoustic logging instrument probe housing in the prior art is insufficient in strength and cannot meet the requirements of direct-push logging in complex well conditions such as high-angle and horizontal wells.

[0042] See also Figure 1 In one embodiment of the present invention, a probe housing of an acoustic logging instrument is provided, including an acoustic probe housing assembly 11, one end of the acoustic probe housing assembly 11 is connected to an upper connector 16 of the probe housing, and the other end is connected to a lower connector 17 of the probe housing; the acoustic probe housing assembly 11 includes an axially connected receiving portion housing 21, a sound insulation housing assembly 22 and a transmitting portion housing 23; Figure 2As shown, the end of the receiving part housing 21 is connected to the upper joint 16 of the probe housing, and a receiving part spindle assembly 12 is provided inside the receiving part housing 21, and a receiving part spindle assembly protective cover 13 is provided on the receiving part spindle assembly 12; the end of the transmitting part housing 23 is connected to the lower joint 17 of the probe housing, and a transmitting part spindle assembly 14 is provided inside the transmitting part housing 23, and a transmitting part spindle assembly 14 is provided with a transmitting part spindle assembly protective cover 15; the sound insulation housing assembly 22 includes a sound insulation housing 31, one end of the sound insulation housing 31 is connected to the receiving part spindle assembly 12, and the other end is connected to the transmitting part spindle assembly 14; a sound insulation structure is provided on the sound insulation housing 31.

[0043] Specifically, according to Figure 3 As shown, the sound insulation structure of the sound insulation shell 31 includes a plurality of gasket sound insulation grooves 47 arranged in sequence along the long side shell direction of the sound insulation shell 31, the gasket sound insulation groove 47 is an annular groove structure, and the sound insulation groove gasket can effectively improve the compressive strength of the shell assembly, the gasket sound insulation groove 47 is inserted into the sound insulation groove gasket 32, and a plurality of gasket anti-drop sleeves 33 are sleeved along the long side shell direction of the sound insulation shell 31, which are used to cover the gasket sound insulation groove 47 and press on the sound insulation groove gasket 32 ​​to prevent the sound insulation groove gasket from falling off.

[0044] Among them, according to Figure 7 As shown, the sound insulation groove gasket 32 ​​includes a plurality of arc-shaped gasket structures, and a gasket separation groove 52 is provided between the plurality of arc-shaped gasket structures. The plurality of arc-shaped gasket structures are annularly embedded in a gasket sound insulation groove 47, so that the sound insulation groove gasket is conveniently installed in the sound insulation shell and is pressed by the gasket anti-drop sleeve 33.

[0045] Among them, according to Figure 6 As shown, a plurality of gasket bosses 51 are respectively disposed on both sides of the sound insulation groove gasket 32, wherein the plurality of gasket bosses 51 on both sides of the sound insulation groove gasket 32 ​​are respectively staggered to prevent direct transmission of sound waves.

[0046] Specifically, according to Figure 2 As shown, gaps are provided between the plurality of gasket anti-dropping sleeves 33 to reduce the influence of the acoustic signal noise caused by the anti-dropping sleeves.

[0047] Among them, the outer diameters of several gasket anti-dropping sleeves 33 are equal, and the outer diameters of several gasket anti-dropping sleeves 33 are smaller than the outer diameters of the receiving part shell 21 and the transmitting part shell 23. The receiving part shell and the transmitting part shell block several gasket anti-dropping sleeves to prevent them from falling.

[0048] Among them, according to Figure 8 As shown, the gasket anti-drop sleeve 33 is cylindrical and is generally made of non-metallic material.

[0049] Specifically, according to Figure 3 and Figure 4 As shown, the sound insulation structure of the sound insulation shell 31 also includes a plurality of outer sound insulation grooves 45 and inner sound insulation grooves 46 which are arranged in sequence along the long side direction of the outer wall and the inner wall of the sound insulation shell 31. The outer sound insulation grooves 45 and the inner sound insulation grooves 46 are both annular grooves. The outer sound insulation grooves and the inner sound insulation grooves play the role of main body sound insulation, effectively reducing signal noise. The annular sound insulation grooves not only meet the requirements of instrument signal quality, but also meet the requirements of instrument signal quality. Because the mandrel for installing the crystal is split, the upper and lower parts are directly connected to the shell, which reduces the direct wave caused by the mandrel part, and can effectively improve the signal quality of the instrument.

[0050] Among them, according to Figure 3 and Figure 5 As shown, a plurality of outer sound insulation grooves 45 and inner sound insulation grooves 46 are staggeredly arranged on the inner and outer walls of the sound insulation shell 31 .

[0051] Specifically, according to Figure 3 and Figure 5 As shown, a spindle mounting hole 41 and a spindle assembly protective sleeve mounting surface 42 are respectively provided at both ends of the sound insulation shell 31, the receiving part spindle assembly 12 and the receiving part spindle assembly protective sleeve 13 are arranged on the spindle mounting hole 41 and the spindle assembly protective sleeve mounting surface 42 at one end of the sound insulation shell 31, and the transmitting part spindle assembly 14 and the transmitting part spindle assembly protective sleeve 1 are arranged on the spindle mounting hole 41 and the spindle assembly protective sleeve mounting surface 42 at the other end of the sound insulation shell 31.

[0052] Specifically, according to Figure 3 and Figure 5 As shown, a connecting post mounting hole 43 and a connecting post fixing screw mounting hole 44 are respectively provided at both ends of the sound insulation shell 31, and the connecting post fixing screw mounting hole 44 is arranged in the connecting post mounting hole 43. The receiving part shell 21 and the transmitting part shell 23 are respectively connected to the connecting post mounting holes 43 at both ends of the sound insulation shell 31 through the connecting posts 24, and then are threadedly connected to the connecting post fixing screw mounting holes 44 through the connecting post fixing screws 25.

[0053] In summary, the present invention provides a probe housing of an acoustic wave logging instrument, wherein an axially connected receiving part housing, a sound insulation housing assembly and a transmitting part housing are arranged in the acoustic wave probe housing assembly, and the acoustic wave probe housing assembly is divided into three parts. Since the strength of the joints between each section is greater than the strength of the remaining parts of the housing, the overall compressive strength of the housing can be improved, and at the same time, the sound insulation section is changed from the original circumferentially staggered cut-through groove sound insulation to the inner and outer staggered but non-cut-through annular groove sound insulation, and at the same time, a gasket is installed in the annular groove, so that the compressive strength of the sound insulation part is greatly enhanced, and at the same time, the core shaft assembly is not directly connected, and the middle is directly connected through the sound insulation housing, and the instrument as a whole reduces the penetration of the core shaft part, thereby reducing a part of the direct wave signal; the sound insulation housing assembly includes a sound insulation housing, one end of the sound insulation housing is connected to the receiving part core shaft assembly, and the other end is connected to the transmitting part core shaft assembly; a sound insulation structure is arranged on the sound insulation housing to improve the compressive strength of the housing and reduce the signal influence of the direct wave.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A probe housing for an acoustic logging instrument, It is characterized in that The invention comprises an acoustic wave probe housing component (11), one end of which is connected to an upper joint (16) of the probe housing, and the other end of which is connected to a lower joint (17) of the probe housing; the acoustic wave probe housing component (11) comprises an axially connected receiving part housing (21), a sound insulation housing component (22) and a transmitting part housing (23); the end of the receiving part housing (21) is connected to the upper joint (16) of the probe housing, and a receiving part spindle component (12) is provided inside the receiving part housing (21), and a connecting rod (17) is sleeved on the receiving part spindle component (12). The transmitting part shell (23) is provided with a transmitting part spindle assembly protective cover (13); the end of the transmitting part shell (23) is connected to the lower joint (17) of the probe shell, and a transmitting part spindle assembly (14) is provided inside the transmitting part shell (23), and the transmitting part spindle assembly (14) is sleeved with a transmitting part spindle assembly protective cover (15); the sound insulation shell assembly (22) comprises a sound insulation shell (31), one end of the sound insulation shell (31) is connected to the receiving part spindle assembly (12), and the other end is connected to the transmitting part spindle assembly (14); a sound insulation structure is provided on the sound insulation shell (31).

2. The sonic logging instrument probe housing according to claim 1, It is characterized in that The sound insulation structure of the sound insulation shell (31) comprises a plurality of gasket sound insulation grooves (47) arranged in sequence along the long side shell direction of the sound insulation shell (31), the gasket sound insulation grooves (47) are annular groove structures, a sound insulation groove gasket (32) is inserted into the gasket sound insulation groove (47), and a plurality of gasket anti-drop sleeves (33) are sleeved along the long side shell direction of the sound insulation shell (31) to cover the gasket sound insulation grooves (47) and press on the sound insulation groove gasket (32).

3. The probe housing of an acoustic logging instrument according to claim 2, It is characterized in that The sound insulation groove gasket (32) comprises a plurality of arc-shaped gasket structures, gasket separation grooves (52) are provided between the plurality of arc-shaped gasket structures, and the plurality of arc-shaped gasket structures are annularly embedded in a gasket sound insulation groove (47) and are compressed by a gasket anti-drop sleeve (33).

4. The sonic logging instrument probe housing according to claim 2, It is characterized in that A plurality of gasket bosses (51) are respectively arranged on both sides of the sound insulation groove gasket (32), wherein the plurality of gasket bosses (51) on both sides of the sound insulation groove gasket (32) are respectively staggered.

5. The probe housing of an acoustic logging instrument according to claim 2, It is characterized in that Gaps are provided between the plurality of gasket anti-drop sleeves (33).

6. The probe housing of an acoustic logging instrument according to claim 2, It is characterized in that The outer diameters of the plurality of gasket anti-dropping sleeves (33) are equal, and the outer diameters of the plurality of gasket anti-dropping sleeves (33) are smaller than the outer diameters of the receiving part housing (21) and the transmitting part housing (23).

7. The probe housing of an acoustic logging instrument according to claim 1, It is characterized in that The sound insulation structure of the sound insulation shell (31) further comprises a plurality of outer sound insulation grooves (45) and inner sound insulation grooves (46) which are arranged in sequence and in correspondence with each other along the long side direction of the outer wall and the inner wall of the sound insulation shell (31); the outer sound insulation grooves (45) and the inner sound insulation grooves (46) are both annular grooves.

8. The probe housing of an acoustic logging instrument according to claim 1, It is characterized in that A plurality of external sound insulation grooves (45) and internal sound insulation grooves (46) are staggeredly arranged on the inner and outer walls of the sound insulation outer shell (31).

9. The sonic logging instrument probe housing according to claim 1, It is characterized in that The two ends of the sound insulation shell (31) are respectively provided with a spindle mounting hole (41) and a spindle assembly protective cover mounting surface (42); the receiving part spindle assembly (12) and the receiving part spindle assembly protective cover (13) are arranged on the spindle mounting hole (41) and the spindle assembly protective cover mounting surface (42) at one end of the sound insulation shell (31); and the transmitting part spindle assembly (14) and the transmitting part spindle assembly protective cover (1) are arranged on the spindle mounting hole (41) and the spindle assembly protective cover mounting surface (42) at the other end of the sound insulation shell (31).

10. The probe housing of an acoustic logging instrument according to claim 1, It is characterized in that The two ends of the sound insulation shell (31) are respectively provided with a connecting column mounting hole (43) and a connecting column fixing screw mounting hole (44); the connecting column fixing screw mounting hole (44) is arranged in the connecting column mounting hole (43); the receiving part shell (21) and the transmitting part shell (23) are respectively connected to the connecting column mounting holes (43) at the two ends of the sound insulation shell (31) through the connecting columns (24), and then threadedly connected to the connecting column fixing screw mounting holes (44) through the connecting column fixing screws (25).

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