Array azimuth acoustic logging instrument

Abstract

The utility model belongs to the technical field of oil exploration instruments, and particularly relates to an array azimuth acoustic logging instrument which comprises an acoustic shell and an acoustic leather bag, a plurality of step-shaped through holes which are annularly distributed are formed in the acoustic shell, and acoustic waves can be well prevented from spreading through the through holes. The sound wave shell hinders emission and receiving of sound waves; the elastic protection net is installed outside the sound wave leather bag and expands synchronously when the sound wave leather bag expands, so that the sound wave leather bag at the through hole is protected, the expansion degree of the sound wave leather bag is controlled, all-around protection is achieved, the probability that the sound wave leather bag is scratched or broken underground is reduced, and when the elastic protection net is damaged, the sound wave leather bag is prevented from being damaged. The detachable fixing part is taken down, the fixing frame can be opened, the elastic protection net is replaced, and assembling and disassembling are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of petroleum exploration instruments, in particular to an array azimuth sonic well logging instrument. Background Art

[0002] Acoustic logging instruments are widely used in the process of oil exploration. They have a wide range of application value in rock mechanics parameter technology, formation fracturing, sand production, oil layer pollution evaluation, formation permeability determination, and oil and gas layer identification.

[0003] The sonic logging instrument includes a sonic balloon on the periphery of the crystal component of the logging instrument, the sonic balloon contains silicone oil, and the periphery of the sonic balloon is covered with a sonic shell, on which a plurality of hollow steel shell grooves are distributed, so that the sound waves can be smoothly transmitted and received. However, in the high temperature and high pressure working environment underground, the silicone oil in the sonic balloon expands due to heat, and the sonic balloon will also expand accordingly, causing the sonic balloon to extend from the hollow position of the steel shell groove, making the sonic balloon easily scratched by foreign objects underground, and even causing the sonic balloon to rupture.

[0004] The existing Chinese patent with the announcement number CN209818057U discloses an acoustic logging instrument, which belongs to the technical field of petroleum exploration instruments, including an acoustic shell and an acoustic capsule, a through hole is provided on the acoustic shell, and the acoustic capsule is arranged in the acoustic shell. The acoustic logging instrument also includes an elastic protective net, which is located between the acoustic capsule and the acoustic shell, and the elastic protective net is coated on the acoustic capsule. The utility model can expand synchronously with the acoustic capsule when the acoustic capsule expands by coating the elastic protective net on the acoustic capsule. On the one hand, it can protect the part of the acoustic capsule extending from the through hole to prevent the acoustic capsule from being scratched or cracked by foreign objects; on the other hand, since the elastic protective net is coated on the entire acoustic capsule, it can control the entire acoustic capsule to a certain extent when the acoustic capsule expands, so as to prevent the part of the acoustic capsule facing the through hole from expanding too much. In addition, the elastic protective net has mesh holes, which will not affect the emission and reception of sound waves.

[0005] In view of the above and existing related technologies, the inventors believe that the following defects often exist: the elastic protection net of the device is installed inside the acoustic shell, which is not convenient to replace after damage and needs to be improved; therefore, an array azimuth acoustic logging instrument is proposed to address the above problems. Utility Model Content

[0006] In order to make up for the deficiencies of the prior art and solve the above-mentioned technical problems, the utility model proposes an array azimuth sonic logging tool.

[0007] The technical solution adopted by the utility model to solve the technical problem is as follows: an array azimuth acoustic wave logging instrument described in the utility model comprises an acoustic wave shell and an acoustic wave capsule, the acoustic wave shell is provided with a plurality of stepped through holes distributed in an annular shape, through which the acoustic wave can be better propagated to avoid the acoustic wave shell from hindering the emission and reception of the acoustic wave, the acoustic wave capsule is arranged in the acoustic wave shell, the interior of the acoustic wave shell is fixedly connected with an azimuth acoustic wave array body composed of a plurality of crystal components, a protection component is installed outside the through hole, the protection component comprises a plurality of mounting frames and a fixing frame, the interior of the mounting frame is fixedly connected with an elastic protection net, the elastic protection net has mesh holes, and will not affect the emission and reception of the acoustic wave, The mounting frame is placed inside the through hole, one end of the fixing frame is hingedly mounted inside the through hole, and a detachable fixing piece is mounted on the other end of the fixing frame. The detachable fixing piece can be bolted, and the fixing frame is clamped and fixed inside the through hole through the fixing piece, so that the elastic protective net is installed inside the through hole. By installing the elastic protective net on the outside of the sonic balloon, it expands synchronously with the expansion of the sonic balloon, thereby protecting the sonic balloon at the through hole and controlling its expansion degree to achieve all-round protection, thereby reducing the probability of the sonic balloon being scratched or broken underground. When the elastic protective net is damaged, the detachable fixing piece is removed, the fixing frame can be opened, and the elastic protective net can be replaced, which is convenient for loading and unloading.

[0008] Preferably, the removable fixing part includes a latch, which is slidably connected to the fixed frame, and a limiting spring is fixedly connected to the opposite side of the latch and the fixed frame. The latch is inserted into the interior of the slot by the elastic force of the limiting spring, so that the fixed frame is fixed inside the through hole. When the latch is pulled out from the inside of the slot, the fixed frame can be rotated open and the elastic protective net can be replaced.

[0009] Preferably, a slot is provided inside the through hole.

[0010] Preferably, the elastic protective net is made of high temperature resistant material.

[0011] Preferably, support components are installed on the upper and lower parts of the acoustic wave housing respectively, and the support components include a fixing ring and a mounting groove. The mounting groove is opened inside the acoustic wave housing, and the upper side wall of the mounting groove is provided with connecting ports distributed in an annular shape, and a sliding ring is slidably connected to the connecting port.

[0012] Preferably, brackets distributed in a ring shape are hingedly connected to opposite sides of the fixed ring and the sliding ring, and a support frame is hingedly connected to the other end of an adjacent bracket.

[0013] Preferably, the support frame is set to be arc-shaped, and a plurality of spring telescopic rods are fixedly connected to the surface of the support frame. A mounting seat is fixedly installed on the other end of the spring telescopic rod. A plurality of guide wheels are rotatably connected to the inside of the mounting seat. The guide wheels move in close contact with the well wall to reduce friction with the well wall, so that the sonic logging instrument can be lifted and lowered in the well for measurement more stably, thereby improving the accuracy of sonic measurement. At the same time, the spring telescopic rods provide a certain lateral buffer space for the guide wheels to avoid the guide wheels from being stuck.

[0014] Preferably, an electric push rod is fixedly connected to the inside of the installation groove. The electric push rod is a waterproof push rod, and the driving end of the electric push rod is fixedly connected to the sliding ring. The sliding ring is pushed up and down by the operation of the electric push rod, thereby adjusting the distance between the support frame and the acoustic wave housing, so that the guide wheel can fit the well walls of multiple sizes, thereby improving the applicability.

[0015] The utility model is beneficial in that:

[0016] 1. The utility model installs an elastic protective net on the outside of the sonic bladder, which expands synchronously with the sonic bladder to protect the sonic bladder at the through hole and control its expansion degree to achieve all-round protection, thereby reducing the probability of the sonic bladder being scratched or broken underground. When the elastic protective net is damaged, the detachable fixing part is removed to open the fixed frame and replace the elastic protective net, which is convenient for loading and unloading.

[0017] 2. The utility model reduces friction with the well wall by moving the guide wheel in contact with the well wall, thereby enabling the sonic logging instrument to be lifted and lowered in the well for measurement more stably, thereby improving the accuracy of sonic measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 For this utility model Figure 1 A structural diagram of ;

[0021] Figure 3 This is a schematic diagram of the expanded structure of the protection component of the utility model;

[0022] Figure 4 For this utility model Figure 3Schematic diagram of the B structure;

[0023] Figure 5 This is a schematic diagram of the structure of the support assembly of the utility model.

[0024] In the figure: 1. sonic shell; 2. sonic capsule; 3. through hole; 4. protection component; 41. mounting frame; 42. elastic protection net; 43. fixing frame; 44. latch; 45. limit spring; 5. slot; 6. support component; 61. fixing ring; 62. mounting groove; 63. connection port; 64. sliding ring; 65. bracket; 66. support frame; 67. spring telescopic rod; 68. mounting seat; 69. guide wheel; 610. electric push rod. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Embodiment 1

[0027] See also Figure 1-4 As shown, an array azimuth acoustic wave logging instrument comprises an acoustic wave shell 1 and an acoustic wave capsule 2. The acoustic wave shell 1 is provided with a plurality of stepped through holes 3 distributed in an annular shape, through which the acoustic wave can be better propagated to avoid the acoustic wave shell 1 from hindering the emission and reception of the acoustic wave. The acoustic wave capsule 2 is arranged in the acoustic wave shell 1. An azimuth acoustic wave array body composed of a plurality of crystal components is fixedly connected inside the acoustic wave shell 1. A protection component 4 is installed outside the through hole 3. The protection component 4 comprises a plurality of mounting frames 41 and a fixing frame 43. An elastic protection net 42 is fixedly connected inside the mounting frame 41. The elastic protection net 42 has mesh holes, which will not affect the emission and reception of the acoustic wave. The mounting frame 41 is placed inside the through hole 3. The fixing frame 4 One end of the fixing frame 43 is hingedly installed inside the through hole 3, and the other end of the fixing frame 43 is installed with a detachable fixing part, which can be connected by bolts. The fixing frame 43 is connected to the inside of the through hole 3 through the fixing part, and then the mounting frame 41 is clamped and fixed, so that the elastic protection net 42 is installed inside the through hole 3. By installing the elastic protection net 42 on the outside of the sound wave capsule 2, it will expand synchronously when the sound wave capsule 2 expands, thereby protecting the sound wave capsule 2 at the through hole 3 and controlling its expansion degree to achieve all-round protection, reduce the probability of the sound wave capsule 2 being scratched or broken underground, and when the elastic protection net 42 is damaged, remove the detachable fixing part, open the fixing frame 43, and replace the elastic protection net 42, which is convenient for loading and unloading.

[0028] The detachable fixing part includes a pin 44, which is slidably connected to the fixed frame 43. The pin 44 is fixedly connected to the opposite side of the fixed frame 43 by a limiting spring 45. The pin 44 is inserted into the interior of the slot 5 by the elastic force of the limiting spring 45, so that the fixed frame 43 is fixed inside the through hole 3. When the pin 44 is pulled out from the inside of the slot 5, the fixed frame 43 can be rotated open and the elastic protective net 42 can be replaced.

[0029] A slot 5 is formed inside the through hole 3 .

[0030] The elastic protection net 42 is made of high temperature resistant material.

[0031] Embodiment 2

[0032] For comparison with Example 1, please refer to Figure 5 As shown, the utility model provides another embodiment, support components 6 are respectively installed on the upper and lower parts of the acoustic wave housing 1, and the support component 6 includes a fixing ring 61 and a mounting groove 62. The mounting groove 62 is opened inside the acoustic wave housing 1, and the upper side wall of the mounting groove 62 is provided with a connecting port 63 distributed in an annular shape, and a sliding ring 64 is slidably connected to the connecting port 63.

[0033] Brackets 65 distributed in a ring shape are hingedly connected to opposite sides of the fixed ring 61 and the sliding ring 64 , respectively, and support frames 66 are hingedly connected to the other ends of adjacent brackets 65 .

[0034] The support frame 66 is designed to be arc-shaped, and a plurality of spring telescopic rods 67 are fixedly connected to the surface of the support frame 66. A mounting seat 68 is fixedly installed at the other end of the spring telescopic rod 67. A plurality of guide wheels 69 are rotatably connected to the inside of the mounting seat 68. The guide wheels 69 move in close contact with the well wall to reduce friction with the well wall, thereby allowing the sonic logging instrument to be lifted and lowered in the well for measurement more stably, thereby improving the accuracy of the sonic measurement.

[0035] An electric push rod 610 is fixedly connected inside the mounting groove 62. The electric push rod 610 is a waterproof push rod, and the driving end of the electric push rod 610 is fixedly connected to the sliding ring 64. The sliding ring 64 is pushed up and down by the operation of the electric push rod 610, thereby adjusting the distance between the support frame 66 and the acoustic wave housing 1, so that the guide wheel 69 can fit the well walls of various sizes, thereby improving the applicability.

[0036] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and a suitable controller should be selected according to the actual situation to meet the control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between the electrical components is completed in the order of working in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and does not explain the electrical control.

[0037] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art.

[0038] Working principle: the fixed frame 43 is clamped and fixed to the inside of the through hole 3 through the fixing parts, so that the elastic protection net 42 is installed inside the through hole 3. By installing the elastic protection net 42 on the outside of the sound wave capsule 2, it will expand synchronously when the sound wave capsule 2 expands, thereby protecting the sound wave capsule 2 at the through hole 3 and controlling its expansion degree to achieve all-round protection, reducing the probability of the sound wave capsule 2 being scratched or broken underground. When the elastic protection net 42 is damaged, the detachable fixing parts can be removed to open the fixed frame 43 and replace the elastic protection net 42, which is convenient for loading and unloading.

[0039] The guide wheel 69 moves in close contact with the well wall to reduce friction with the well wall, so that the sonic logging instrument can be lifted and lowered in the well more stably to improve the accuracy of sonic measurement. The electric push rod 610 drives the sliding ring 64 to rise and fall, thereby adjusting the distance between the support frame 66 and the sonic housing 1, so that the guide wheel 69 can fit well walls of various sizes, thereby improving the applicability.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0041] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. An array azimuth acoustic wave logging instrument, comprising an acoustic wave housing (1) and an acoustic wave capsule (2), wherein the acoustic wave housing (1) is provided with a plurality of stepped through holes (3) distributed in an annular shape, the acoustic wave capsule (2) is arranged in the acoustic wave housing (1), and an azimuth acoustic wave array body composed of a plurality of crystal components is fixedly connected to the interior of the acoustic wave housing (1), characterized in that: A protection component (4) is installed outside the through hole (3), and the protection component (4) comprises a plurality of installation frames (41) and a fixing frame (43). An elastic protection net (42) is fixedly connected inside the installation frame (41). The installation frame (41) is placed inside the through hole (3), one end of the fixing frame (43) is hingedly installed inside the through hole (3), and a detachable fixing part is installed at the other end of the fixing frame (43).

2. The array azimuth acoustic logging tool according to claim 1, characterized in that: The detachable fixing member comprises a latch (44), the latch (44) being slidably connected to the fixing frame (43), and a limiting spring (45) being fixedly connected to the opposite side of the latch (44) and the fixing frame (43).

3. The array azimuth acoustic logging tool according to claim 1, characterized in that: A slot (5) is provided inside the through hole (3).

4. The array azimuth acoustic logging tool according to claim 1, characterized in that: The elastic protection net (42) is made of high temperature resistant material.

5. The array azimuth acoustic logging tool according to claim 1, characterized in that: Support assemblies (6) are respectively installed at the upper and lower parts of the acoustic wave housing (1), and the support assembly (6) comprises a fixing ring (61) and a mounting groove (62). The mounting groove (62) is provided inside the acoustic wave housing (1), and the upper side wall of the mounting groove (62) is provided with connecting openings (63) distributed in an annular shape, and a sliding ring (64) is slidably connected to the connecting opening (63).

6. The array azimuth acoustic logging tool according to claim 5, characterized in that: The fixed ring (61) and the sliding ring (64) are respectively hingedly connected to one side opposite to the other with brackets (65) distributed in a ring shape, and the other end of the bracket (65) adjacent to the bracket is hingedly connected to a support frame (66).

7. The array azimuth acoustic logging tool according to claim 6, characterized in that: The support frame (66) is configured to be arc-shaped, a plurality of spring telescopic rods (67) are fixedly connected to the surface of the support frame (66), a mounting seat (68) is fixedly installed at the other end of the spring telescopic rod (67), and a plurality of guide wheels (69) are rotatably connected inside the mounting seat (68).

8. The array azimuth acoustic logging tool according to claim 5, characterized in that: An electric push rod (610) is fixedly connected inside the installation groove (62), and a driving end of the electric push rod (610) is fixedly connected to a sliding ring (64).

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