Geophysical well logging aid

Abstract

The application relates to a geophysical well drilling auxiliary device and relates to the technical field of geophysical well drilling, which comprises a fixing frame, a positioning column, a first positioning assembly and a second positioning assembly. The fixing frame is horizontally arranged in a cross shape, a center hole is arranged at the center, the positioning column is coaxially arranged with the center hole, the top surface is fixedly connected with the bottom surface of the fixing frame, a through hole is arranged at the center, and the through hole is matched with a probe. The first positioning assembly is used for positioning the fixing frame at the well center, and the second positioning assembly is used for positioning the probe at the well center. The application ensures the accurate centering of the probe through a multistage positioning structure, improves the accuracy and reliability of well logging data, and effectively reduces the measurement error.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of geophysical well exploration, in particular to a geophysical well exploration auxiliary device. BACKGROUND

[0002] Geophysical well exploration technology is one of the important means of geological exploration and underground resource development, and is widely used in the fields of oil, natural gas, groundwater, etc. With the progress of science and technology, the precision and reliability of geophysical well exploration equipment are continuously improved, greatly improving the efficiency and accuracy of geological survey. However, in practical application, how to ensure that the probe stably collects data at the center of the well has become a key problem.

[0003] In the prior art, there is no effective method to solve this problem. Traditional logging methods usually rely on manual operation or simple mechanical devices to achieve this goal, but these methods often have problems such as inaccurate positioning and poor stability, which limit the accuracy of the measurement results.

[0004] The main problem existing in the prior art is that due to the lack of effective multi-level fixation and precise positioning mechanism, the probe is easily affected by external factors and deviates from the predetermined position, especially in complex geological conditions, this deviation will be more obvious, thereby affecting the quality of the final data and the credibility of the detection results. Therefore, a more reliable method is needed to improve the positioning accuracy and stability of the probe at the center of the well. SUMMARY

[0005] In order to overcome the above technical problems, the present application provides a geophysical well exploration auxiliary device.

[0006] The geophysical well exploration auxiliary device provided by the present application adopts the following technical scheme:

[0007] A geophysical well exploration auxiliary device, comprising a fixing frame, a positioning column, a first positioning assembly, a second positioning assembly, a linkage assembly and a positioning component; the fixing frame is cross-shaped and horizontally arranged, a center hole is formed in the center of the fixing frame; the positioning column is coaxially arranged with the center hole, the top surface of the positioning column is fixedly connected with the bottom surface of the fixing frame, a through hole is formed in the center of the top surface of the positioning column, the through hole penetrates the positioning column in the vertical direction, the axis direction of the through hole coincides with the axis direction of the center hole, and the sizes of the center hole and the through hole are adapted to the size of the probe; the first positioning assembly is arranged below the fixing frame and is used for positioning the fixing frame at the center of the well; the second positioning assembly is arranged in the positioning column and is used for positioning the probe at the center of the well; the linkage assembly is arranged below the fixing frame and is used for driving the first positioning assembly to work; and the positioning component is arranged in the positioning column and is used for driving the probe to be positioned at the center of the well.

[0008] By adopting the technical scheme, the fixed frame is cross-shaped and horizontally arranged, which can ensure the stability and balance of the device in the well. The design of the center hole and the through hole enables the probe to accurately pass through and be positioned in the center of the well, improving the accuracy of measurement. The first positioning assembly positions the fixed frame in the center of the well, ensuring the central position of the entire device and avoiding data deviation caused by deviation. The second positioning assembly further ensures that the probe is aligned with the center of the well, improving the reliability and accuracy of the detection process.

[0009] Optionally, four sliding grooves are formed in the bottom of the fixed frame, and the cross sections of the four sliding grooves are also cross-shaped. The first positioning assembly includes four sliding blocks, each of which is slidingly arranged in one of the sliding grooves. One of the sliding grooves is further provided with a first spring, one end of the first spring is fixedly connected with the side wall of the sliding groove near the through hole, and the other end is fixedly connected with the sliding block in the sliding groove. Each sliding block is fixedly connected with an abutting block at the bottom. The linkage assembly is arranged between adjacent two abutting blocks, and is used for moving the four abutting blocks synchronously towards or away from the through hole.

[0010] By adopting the technical scheme, the fixed frame can be accurately positioned in the center of the well. Specifically, the design of the sliding groove and the sliding block enables the first positioning assembly to adjust the position flexibly, ensuring that the four abutting blocks move synchronously towards or away from the through hole, thereby adapting to wellheads of different diameters. Meanwhile, the first spring is arranged to automatically rebound when the device is placed in the well, ensuring that the fixed frame is stably centered. The design of the linkage assembly ensures the synchronous action of the four abutting blocks, and when the four abutting blocks are in abutment with the well wall, the position of the fixed frame can be locked, and at this time the positioning column can be positioned at the center of the well.

[0011] Optionally, the linkage assembly includes four linkage rods and four bidirectional telescopic rods. Each linkage rod is located between adjacent two abutting blocks. The linkage rod is a telescopic rod, and the fixed end of the linkage rod is fixedly connected with the fixed frame. The four bidirectional telescopic rods are also provided. The fixed end of each bidirectional telescopic rod is fixedly connected with the movable end of one linkage rod. The two movable ends of each bidirectional telescopic rod are hingedly connected with adjacent two abutting blocks.

[0012] By adopting the technical scheme, the linkage assembly can ensure the synchronous movement of the four abutting blocks, thereby achieving accurate positioning of the fixed frame in the center of the well. Specifically, the design of the linkage rod and the bidirectional telescopic rod enables the other three sliding blocks to move synchronously when one sliding block is subjected to force, ensuring the stability and reliability of the entire device. This design not only improves the positioning accuracy, but also effectively prevents deviation caused by uneven force on a single sliding block, improving the overall performance of the device.

[0013] Optionally, the longitudinal section of the sliding groove is T-shaped, the longitudinal section of the sliding block is also T-shaped and the size of the sliding block is adapted to the size of the sliding groove, and the side of the abutting block away from the through hole is arc-shaped, and the outer surface of the abutting block is made of elastic material.

[0014] By adopting the above technical scheme, the longitudinal sections of the sliding groove and the sliding block are both T-shaped, so that the sliding block stably slides in the sliding groove and is not easy to fall off, and the overall stability of the first positioning assembly is enhanced. The side of the abutting block away from the through hole is arc-shaped, which can better adapt to the well walls of different diameters and improve the application range of the equipment. The outer surface of the abutting block is made of elastic material, which can provide a certain buffering effect when contacting the well wall and reduce the damage to the well wall.

[0015] Optionally, the second positioning assembly comprises a first telescopic rod, a second spring and a push rod, the positioning column has a hollow structure, the first telescopic rod is horizontally arranged, the fixed end of the first telescopic rod is fixedly connected with the side wall of the positioning column away from the through hole, the movable end of the first telescopic rod is fixedly connected with the push rod, the push rod is vertically arranged, the second spring is sleeved on the first telescopic rod, one end of the second spring is fixedly connected with the side wall of the positioning column, and the other end of the second spring is fixedly connected with the push rod, the positioning component is provided with two groups, the two groups of positioning components are respectively located at the top and the bottom of the side of the push rod away from the first telescopic rod, and the two groups of positioning components are both used for positioning the probe at the well center.

[0016] By adopting the above technical scheme, the probe is accurately positioned at the well center. Specifically, the combination of the first telescopic rod and the second spring enables the push rod to be stably maintained at the required position, and the design of the two groups of positioning components enables the probe to be positioned twice in the vertical direction, so that the probe can be stably maintained at the center position and prevented from deviating during operation, thereby improving the accuracy of the detection result.

[0017] Optionally, the positioning component comprises a first positioning block, a first positioning wheel and a first connecting rod, the first positioning block is horizontally arranged, the length direction of the first positioning block is parallel to the length direction of the first telescopic rod, one end of the first positioning block is fixedly connected with the push rod, and the other end of the first positioning block is fixedly connected with the central shaft of the first positioning wheel through two first connecting rods, two first positioning ports which are vertically opposite to each other are arranged on the inner side wall of the through hole, and each first positioning wheel is slidably arranged in a corresponding first positioning port.

[0018] By adopting the technical scheme, the first positioning block, the first positioning wheel and the first connecting rod are arranged, so that the probe can be positioned more stably in the well center. Specifically, one end of the first positioning block is fixedly connected with the push rod, so as to ensure the overall stability of the positioning component; the other end is fixedly connected with the central shaft of the first positioning wheel through two first connecting rods, so as to ensure that the first positioning wheel can smoothly slide in the first positioning port, thereby realizing effective support and accurate positioning of the probe. This design not only improves the positioning accuracy of the probe, but also enhances the overall reliability and service life of the equipment.

[0019] Optionally, the positioning component further comprises a second telescopic rod, a second positioning wheel, a second connecting rod, a first transmission rod and a second transmission rod, two second telescopic rods are arranged in each set of positioning components, the two second telescopic rods are arranged horizontally and opposite to each other in the horizontal direction, the fixed end of the second telescopic rod is fixedly connected with the side wall of the positioning column away from the side of the through hole, and the movable end of the second telescopic rod is fixedly connected with the central shaft of the second positioning wheel through two second connecting rods; four second positioning ports are formed on the inner side wall of the through hole, the second positioning ports are distributed opposite to each other in pairs, and each second positioning wheel is slidably arranged in one second positioning port; two first transmission rods are arranged in each set of positioning components, the cross section of the first transmission rod is L-shaped, the two first transmission rods are arranged horizontally and symmetrically with the push rod as the center of symmetry, and one end of the first transmission rod is fixedly connected with the push rod; two second transmission rods are arranged in each set of positioning components, and the two second transmission rods are also arranged horizontally, and each second transmission rod is fixedly connected with the movable end of one second telescopic rod; the end of the first transmission rod away from the push rod is inclined, the end of the second transmission rod close to the first transmission rod is also inclined, and the first transmission rod and the second transmission rod are matched with each other through corresponding inclined surfaces.

[0020] By adopting the technical scheme, the second telescopic rod and the second positioning wheel are arranged, so as to further improve the stability and accurate positioning of the probe in the well center. Specifically, when the push rod moves, the first transmission rod drives the second transmission rod to move, so that the second telescopic rod is telescoped, thereby driving the second positioning wheel to slide in the second positioning port, so as to realize the synchronous movement of the first positioning wheel and the second positioning wheel, and realize the multi-point support and accurate positioning of the probe. This design not only improves the stability of the probe, but also enhances the overall reliability and operation convenience of the equipment.

[0021] Optionally, the positioning component further comprises a third telescopic rod, a third positioning wheel, a third connecting rod and a third transmission rod; the third telescopic rod is horizontally arranged, the fixed end of the third telescopic rod is fixedly connected with the inner side wall of the positioning column, the movable end of the third telescopic rod is fixedly connected with the central shaft of the third positioning wheel through two third connecting rods, and in the same group of positioning components, the first positioning wheel, the second positioning wheel and the third positioning wheel are located in the same horizontal plane; two third positioning openings that are vertically and oppositely arranged are formed in the inner side wall of the through hole, and each third positioning wheel is slidably arranged in one third positioning opening; the third transmission rod is horizontally arranged, the third transmission rod is fixedly connected with the movable end of the third telescopic rod, and the second transmission rod is also L-shaped, the end of the second transmission rod away from the first transmission rod is inclined, and the two ends of the third transmission rod are also inclined, and the two ends of the third transmission rod are matched with the ends of the two second transmission rods away from the first transmission rod through corresponding inclined surfaces.

[0022] By adopting the above technical scheme, the positioning component is provided with a third telescopic rod, a third positioning wheel, a third connecting rod and a third transmission rod. These newly added components enable the first positioning wheel, the second positioning wheel and the third positioning wheel to work cooperatively in the same horizontal plane, and under the action of the push rod, the first positioning wheel, the second positioning wheel and the third positioning wheel are located in the through hole on the side close to the through hole through the first transmission rod, the second transmission rod and the third transmission rod, when the probe is inserted into the positioning hole, the side surface of the probe is in abutment with the first positioning wheel, the second positioning wheel and the third positioning wheel at the same time, and the probe is maintained at the central position under the synchronous action of the first positioning wheel, the second positioning wheel and the third positioning wheel. Meanwhile, the inclined surfaces between the third transmission rod and the second transmission rod are matched and designed, which can ensure the synchronous action of the positioning wheels and enhance the stability and reliability of the system.

[0023] Optionally, the outer surfaces of the first positioning wheel, the second positioning wheel and the third positioning wheel are made of elastic material.

[0024] By adopting the above technical scheme, the outer surfaces of the first positioning wheel, the second positioning wheel and the third positioning wheel are made of elastic material, which can effectively reduce the impact force on the probe during the positioning process, improve the positioning accuracy and stability, and prevent the probe from being damaged.

[0025] Optionally, four mounting holes are formed in the four ends of the fixing frame respectively, and the mounting holes are used for penetrating expansion bolts to fix the fixing frame.

[0026] By adopting the above technical scheme, the four ends of the fixing frame are respectively provided with mounting holes, the mounting holes can be conveniently penetrated by expansion bolts, so that the fixing frame is firmly fixed on the well mouth or other supporting surface. This design not only improves the overall stability of the equipment, but also ensures that displacement or loosening does not occur during use, thereby ensuring the accuracy and safety of well logging work.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. The design of the fixing frame and the positioning column enables the probe to be accurately inserted into the well center, and through the cooperation of the first positioning assembly and the second positioning assembly, the stability of the probe in the well center position is ensured, solving the problem that the probe is easily affected by external factors and deviates from the predetermined position in the traditional method;

[0029] 2. The first positioning assembly uses a sliding block, an abutting block and a linkage assembly to achieve precise positioning of the fixing frame in the well center, ensuring the stability and reliability of the entire device;

[0030] 3. The second positioning assembly further improves the position accuracy and stability of the probe in the well center through the combined design of multiple extension rods, springs and positioning components, and is especially suitable for high-precision measurement requirements under complex geological conditions. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present application;

[0032] Figure 2 is a schematic diagram of the cross-sectional structure of an embodiment of the present application;

[0033] Figure 3 is a schematic diagram of the overall structure of another view of an embodiment of the present application;

[0034] Figure 4 is a schematic diagram of the longitudinal cross-sectional structure of an embodiment of the present application;

[0035] Figure 5 is a partial enlarged view of the present application showing the push rod, the second connecting rod and the third connecting rod;

[0036] Figure 6 is a sectional view of the present application showing that the first positioning wheel, the two second positioning wheels and the third positioning wheel are in the same horizontal plane.

[0037] Explanation of reference signs: 1, probe; 2, fixing frame; 21, center hole; 22, mounting hole; 23, sliding groove; 3, positioning column; 31, through hole; 32, first positioning port; 33, second positioning port; 34, third positioning port; 4, first positioning assembly; 41, sliding block; 42, first spring; 43, abutting block; 5, second positioning assembly; 51, first telescopic rod; 52, second spring; 53, push rod; 6, linkage assembly; 61, linkage rod; 62, bidirectional telescopic rod; 7, positioning component; 701, first positioning block; 702, first positioning wheel; 703, first connecting rod; 711, second telescopic rod; 712, second positioning wheel; 713, second connecting rod; 714, first transmission rod; 715, second transmission rod; 721, third telescopic rod; 722, third positioning wheel; 723, third connecting rod; 724, third transmission rod. DETAILED DESCRIPTION

[0038] The following will be described in detail below with reference to the accompanying drawings Figures 1-4 The present application is further described in detail.

[0039] The embodiments of the present application disclose a geophysical well drilling auxiliary device. Referring to Figure 1 and Figure 2 The geophysical well drilling auxiliary device comprises a fixing frame 2, a positioning column 3, a first positioning assembly 4, a second positioning assembly 5, a linkage assembly 6 and a positioning component 7; the fixing frame 2 is horizontally arranged in a cross shape, and a center hole 21 is formed at the center of the fixing frame 2; the positioning column 3 is coaxially arranged with the center hole 21, the top surface of the positioning column 3 is fixedly connected with the bottom surface of the fixing frame 2, a through hole 31 is formed at the center of the top surface of the positioning column 3, the through hole 31 penetrates the positioning column 3 in the vertical direction, the axis direction of the through hole 31 coincides with the axis direction of the center hole 21, and the sizes of the center hole 21 and the through hole 31 are matched with the size of the probe 1; the first positioning assembly 4 is arranged below the fixing frame 2 and is used for positioning the fixing frame 2 at the well center; and the second positioning assembly 5 is arranged in the positioning column 3 and is used for positioning the probe 1 at the well center.

[0040] The fixing frame 2 is horizontally arranged in a cross shape, which can ensure the stability and balance of the device in the well. The design of the center hole 21 and the through hole 31 enables the probe 1 to accurately pass through and be positioned at the well center, improving the measurement accuracy. The first positioning assembly 4 positions the fixing frame 2 at the well center, ensuring the central position of the entire device and avoiding data deviation caused by deviation. The second positioning assembly 5 further ensures that the probe 1 is aligned with the well center, improving the reliability and accuracy of the detection process.

[0041] Referring to Figure 1The four ends of the fixing frame 2 are respectively provided with an installation hole 22, and the installation hole 22 is used for penetrating an expansion bolt to fix the fixing frame 2. The four ends of the fixing frame 2 are respectively provided with the installation hole 22, and the installation hole 22 can be conveniently penetrated by the expansion bolt, so that the fixing frame 2 is fixed on the well mouth or other supporting surface. This design not only improves the overall stability of the equipment, but also ensures that displacement or loosening does not occur during use, thereby ensuring the accuracy and safety of the well logging work.

[0042] With reference to Figure 1 and Figure 3 The bottom of the fixing frame 2 is provided with four sliding grooves 23, and the cross sections of the four sliding grooves 23 are also cross-shaped. The first positioning assembly 4 includes four sliding blocks 41, and each sliding block 41 is slidingly arranged in a sliding groove 23. One of the sliding grooves 23 is further provided with a first spring 42, one end of the first spring 42 is fixedly connected with a side wall of the sliding groove 23 near the center hole 21, and the other end is fixedly connected with the sliding block 41 in the sliding groove 23. The bottom of each sliding block 41 is fixedly connected with an abutting block 43, and the linkage assembly 6 is arranged between adjacent two abutting blocks 43. The linkage assembly 6 is used for synchronously moving the four abutting blocks 43 towards the direction of approaching or moving away from the center hole 21.

[0043] The design of the sliding groove 23 and the sliding block 41 makes the first positioning assembly 4 flexible to adjust the position, so that the four abutting blocks 43 can be synchronously moved towards the direction of approaching or moving away from the center hole 21, thereby adapting to the well mouth with different diameters. At the same time, the setting of the first spring 42 can automatically rebound when the device is put into the well, so as to ensure that the fixing frame 2 is stably centered. The design of the linkage assembly 6 ensures the synchronous action of the four abutting blocks 43. When the four abutting blocks 43 are all in abutment with the well wall, the position of the fixing frame 2 can be locked, and at this time, the positioning column 3 can be positioned at the center of the well.

[0044] With reference to Figure 1 and Figure 3 The linkage assembly 6 includes four linkage rods 61 and four bidirectional telescopic rods 62. Each linkage rod 61 is located between adjacent two abutting blocks 43. The linkage rod 61 is a telescopic rod, and the fixed end of the linkage rod 61 is fixedly connected with the fixing frame 2. The four bidirectional telescopic rods 62 are also provided. The fixed end of each bidirectional telescopic rod 62 is fixedly connected with the movable end of one linkage rod 61. The two movable ends of each bidirectional telescopic rod 62 are hingedly connected with adjacent two abutting blocks 43.

[0045] The linkage assembly 6 can ensure the synchronous movement of the four abutting blocks 43, thereby realizing the accurate positioning of the fixing frame 2 at the well center. Specifically, the design of the linkage rod 61 and the bidirectional telescopic rod 62 makes the other three sliding blocks 41 move synchronously when one sliding block 41 is subjected to force, thereby ensuring the stability and reliability of the entire device. This design not only improves the positioning accuracy, but also effectively prevents the deviation problem caused by uneven force on a single sliding block 41, thereby improving the overall performance of the equipment.

[0046] With reference to Figure 1 and Figure 4 , the longitudinal section of the sliding groove 23 is T-shaped, the longitudinal section of the sliding block 41 is also T-shaped and the size is matched with that of the sliding groove 23, and the side of the abutting block 43 away from the center hole 21 is arc-shaped, and the outer surface of the abutting block 43 is made of elastic material. The longitudinal sections of the sliding groove 23 and the sliding block 41 are both designed in T-shape, so that the sliding block 41 stably slides in the sliding groove 23 and is not easy to fall off, thereby enhancing the overall stability of the first positioning assembly 4. The side of the abutting block 43 away from the center hole 21 is designed in arc shape, which can better adapt to the well walls of different diameters and improve the application range of the equipment. The outer surface of the abutting block 43 is made of elastic material, which can provide a certain buffering effect when contacting the well wall and reduce the damage to the well wall.

[0047] Before work, one of the abutting blocks 43 is moved towards the center hole 21, and the abutting block 43 drives the other three abutting blocks 43 to move towards the center hole 21 through the bidirectional telescopic rod 62 and the linkage rod 61, so that the first spring 42 is in a compressed state; the four corners of the fixing frame 2 are placed at the well mouth, and the positioning column 3 and the abutting block 43 are placed in the well, and then the abutting block 43 is released to move the sliding block 41 connected with the first spring 42 towards the well wall, and the sliding block 41 drives the other three sliding blocks 41 to move towards the well wall, so that the four sliding blocks 41 drive the four abutting blocks 43 to move towards the well wall, until the four abutting blocks 43 abut against the well wall, at this time the positioning column 3 is at the center of the well, and the fixing frame 2 can be fixed by using expansion bolts through the four mounting holes 22.

[0048] With reference to Figure 1 and Figure 2, the second positioning assembly 5 comprises a first telescopic rod 51, a second spring 52 and a push rod 53; the positioning column 3 is of an internal hollow structure, the first telescopic rod 51 is horizontally arranged, a fixed end of the first telescopic rod 51 is fixedly connected with a side wall of the positioning column 3 away from the through hole 31, a movable end of the first telescopic rod 51 is fixedly connected with the push rod 53, the push rod 53 is vertically arranged, the second spring 52 is sleeved on the first telescopic rod 51, one end of the second spring 52 is fixedly connected with the side wall of the positioning column 3, the other end is fixedly connected with the push rod 53, and the push rod 53 is provided with a group of positioning components 7 at the top and the bottom away from the first telescopic rod 51, respectively, and the two groups of positioning components 7 are used for positioning the probe 1 at the well center.

[0049] The combination of the first telescopic rod 51 and the second spring 52 enables the push rod 53 to be stably kept at a required position, and the design of the two groups of positioning components 7 enables the probe 1 to be secondarily positioned in the vertical direction, so that the probe 1 can be stably maintained at the center position and prevented from deviating in the operation process, thereby improving the accuracy of the detection result.

[0050] With reference to Figure 1 and Figure 2 , the positioning component 7 comprises a first positioning block 701, a first positioning wheel 702 and a first connecting rod 703; the first positioning block 701 is horizontally arranged, the length direction of the first positioning block 701 is parallel to the length direction of the first telescopic rod 51, one end of the first positioning block 701 is fixedly connected with the push rod 53, and the other end is fixedly connected with the central shaft of the first positioning wheel 702 through two first connecting rods 703; two first positioning openings 32 are formed on the inner side wall of the through hole 31 and are vertically and oppositely distributed, and each first positioning wheel 702 is slidingly arranged in a corresponding first positioning opening 32.

[0051] The arrangement of the first positioning block 701, the first positioning wheel 702 and the first connecting rod 703 enables the probe 1 to be more stably positioned at the well center. Specifically, one end of the first positioning block 701 is fixedly connected with the push rod 53, thereby ensuring the overall stability of the positioning component 7; the other end is fixedly connected with the central shaft of the first positioning wheel 702 through two first connecting rods 703, thereby ensuring that the first positioning wheel 702 can smoothly slide in the first positioning opening 32, so as to effectively support and accurately position the probe 1. This design not only improves the positioning accuracy of the probe 1, but also enhances the overall reliability and service life of the equipment.

[0052] With reference to Figure 1 and Figure 2The positioning component 7 further comprises a second telescopic rod 711, a second positioning wheel 712, a second connecting rod 713, a first transmission rod 714 and a second transmission rod 715. Each set of positioning component 7 is provided with two second telescopic rods 711 and two second positioning wheels 712. The two second telescopic rods 711 are horizontally arranged and face each other in the horizontal direction. The fixed end of the second telescopic rod 711 is fixedly connected with the side wall of the positioning column 3 away from the through hole 31. The movable end of the second telescopic rod 711 is fixedly connected with the central shaft of the second positioning wheel 712 through two second connecting rods 713. Four second positioning openings 33 are formed on the inner side wall of the through hole 31. The second positioning openings 33 are oppositely distributed in pairs. Each second positioning wheel 712 is slidingly arranged in a second positioning opening 33. Each set of positioning component 7 is also provided with two first transmission rods 714. The cross section of the first transmission rod 714 is L-shaped. The two first transmission rods 714 are horizontally arranged and symmetrically arranged with the push rod 53 as the center of symmetry. One end of the first transmission rod 714 is fixedly connected with the push rod 53. Each set of positioning component 7 is also provided with two second transmission rods 715. The two second transmission rods 715 are also horizontally arranged. Each second transmission rod 715 is fixedly connected with the movable end of one second telescopic rod 711. The end of the first transmission rod 714 away from the push rod 53 is inclined. The end of the second transmission rod 715 close to the first transmission rod 714 is also inclined. The first transmission rod 714 and the second transmission rod 715 are matched with each other through the corresponding inclined surfaces.

[0053] The arrangement of the second telescopic rod 711 and the second positioning wheel 712 can further improve the stability and accurate positioning of the probe 1 in the well center. Specifically, when the push rod 53 moves, the first transmission rod 714 drives the second transmission rod 715 to move, so that the second telescopic rod 711 is telescoped, thereby driving the second positioning wheel 712 to slide in the second positioning opening 33, to realize the synchronous movement of the first positioning wheel 702 and the second positioning wheel 712, and to realize the multi-point support and accurate positioning of the probe 1. This design not only improves the stability of the probe 1, but also enhances the overall reliability and operation convenience of the equipment.

[0054] When the push rod 53 moves towards the direction close to the through hole 31 under the tension of the second spring 52, the push rod 53 drives the first transmission rod 714 and the first positioning block 701 to also move towards the direction close to the through hole 31, the first positioning block 701 drives the first positioning wheel 702 to also move towards the direction close to the through hole 31, the first transmission rod 714 drives the second transmission rod 715 to also move towards the direction close to the through hole 31 through the inclined surface, the second transmission rod 715 drives the movable end of the second telescopic rod 711 to extend, and drives the second positioning wheel 712 to also move towards the direction close to the through hole 31; when the probe 1 penetrates into the through hole 31 and contacts the second positioning wheel 712, the second positioning wheel 712 moves towards the direction away from the through hole 31, the second positioning wheel 712 drives the movable end of the second telescopic rod 711 to shorten, and drives the second transmission rod 715 to also move towards the direction away from the through hole 31, the second transmission rod 715 drives the first transmission rod 714 to also move towards the direction away from the through hole 31, the first transmission rod 714 drives the push rod 53 to move towards the direction away from the through hole 31, the push rod 53 drives the first telescopic rod 51 to compress, the second spring 52 is compressed, and at the same time, the first positioning block 701 and the first positioning wheel 702 are also driven to move towards the direction away from the through hole 31, so as to realize the synchronous movement of the first positioning wheel 702 and the second positioning wheel 712.

[0055] With reference to Figure 1 and Figure 2 , the positioning component 7 further comprises a third telescopic rod 721, a third positioning wheel 722, a third connecting rod 723 and a third transmission rod 724; the third telescopic rod 721 is horizontally arranged, the fixed end of the third telescopic rod 721 is fixedly connected with the inner side wall of the positioning column 3, and the movable end of the third telescopic rod 721 is fixedly connected with the central shaft of the third positioning wheel 722 through two third connecting rods 723; in the same group of positioning components 7, the first positioning wheel 702, the second positioning wheel 712 and the third positioning wheel 722 are located in the same horizontal plane; two third positioning openings 34 which are vertically and oppositely distributed are arranged on the inner side wall of the through hole 31, and each third positioning wheel 722 is slidably arranged in one third positioning opening 34; the third transmission rod 724 is horizontally arranged, the third transmission rod 724 is fixedly connected with the movable end of the third telescopic rod 721, and the second transmission rod 715 is also in L shape, the end of the second transmission rod 715 away from the first transmission rod 714 is in inclined shape, and the two ends of the third transmission rod 724 are also in inclined shape, and the two ends of the third transmission rod 724 and the end of the second transmission rod 715 away from the first transmission rod 714 are matched with each other through corresponding inclined surfaces.

[0056] The positioning component 7 adds a third telescopic rod 721, a third positioning wheel 722, a third connecting rod 723 and a third transmission rod 724. These newly added components enable the first positioning wheel 702, the second positioning wheel 712 and the third positioning wheel 722 to work in the same horizontal plane. Under the action of the push rod 53, the first positioning wheel 702, the second positioning wheel 712 and the third positioning wheel 722 are all located in the through hole 31 through the first transmission rod 714, the second transmission rod 715 and the third transmission rod 724. When the probe 1 penetrates into the positioning hole, the side surface of the probe 1 simultaneously abuts against the first positioning wheel 702, the second positioning wheel 712 and the third positioning wheel 722, which are maintained in the central position under the synchronous action of the first positioning wheel 702, the second positioning wheel 712 and the third positioning wheel 722. Meanwhile, the inclined surfaces between the third transmission rod 724 and the second transmission rod 715 are designed to cooperate, which can ensure the synchronous action of the positioning wheels and enhance the stability and reliability of the system.

[0057] When the second transmission rod 715 moves towards the direction close to the through hole 31 under the action of the first transmission rod 714, the inclined surface close to the third transmission rod 724 of the second transmission rod 715 interacts with the inclined surface of the third transmission rod 724, which drives the third transmission rod 724 to also move towards the direction close to the through hole 31, thereby driving the third positioning wheel 722 to also move towards the direction close to the through hole 31, so as to realize the synchronous movement of the first positioning wheel 702, the second positioning wheel 712 and the third positioning wheel 722 towards the direction close to the through hole 31 under the tension of the second spring 52.

[0058] When the probe 1 contacts the third positioning wheel 722 in the through hole 31 and drives the third positioning wheel 722 to move away from the through hole 31, the third positioning wheel 722 drives the movable end of the third telescopic rod 721 to shorten, and drives the third transmission rod 724 to also move away from the through hole 31. The third transmission rod 724 drives the second transmission rod 715 to also move away from the through hole 31 through the inclined surface, thereby realizing the synchronous movement of the third positioning wheel 722, the second positioning wheel 712 and the first positioning wheel 702 away from the through hole 31. Through the synchronous movement of the first positioning wheel 702, the second positioning wheel 712 and the third positioning wheel 722 and the tension of the second spring 52, the probe 1 can be maintained in the well center.

[0059] Referring to Figure 2 , the outer surfaces of the first positioning wheel 702, the second positioning wheel 712 and the third positioning wheel 722 are made of elastic material. The outer surfaces of the first positioning wheel 702, the second positioning wheel 712 and the third positioning wheel 722 made of elastic material can effectively reduce the impact force on the probe 1 during positioning, improve the positioning accuracy and stability, and prevent damage to the probe 1.

[0060] The implementation principle of the well drilling auxiliary device is as follows:

[0061] Before working, one of the abutting blocks 43 is moved towards the direction of the center hole 21, and the other three abutting blocks 43 are also moved towards the direction of the center hole 21 through the bidirectional telescopic rod 62 and the linkage rod 61, so that the first spring 42 is in a compressed state; the four corners of the fixed frame 2 are placed at the well mouth, and the positioning column 3 and the abutting block 43 are placed in the well, then the abutting block 43 is released, the sliding block 41 connected with the first spring 42 is moved towards the direction of the well wall, the other three sliding blocks 41 are also moved towards the direction of the well wall, so that the four sliding blocks 41 drive the four abutting blocks 43 to move towards the direction of the well wall, until the four abutting blocks 43 abut against the well wall, at this time, the positioning column 3 is in the position of the well center, and the fixed frame 2 is fixed through the four mounting holes 22 using expansion bolts; then the probe 1 is extended into the well through the center hole 21 and the through hole 31.

[0062] When the push rod 53 is moved towards the direction of the through hole 31 under the tension of the second spring 52, the push rod 53 drives the first transmission rod 714 and the first positioning block 701 to move towards the direction of the through hole 31, the first positioning block 701 drives the first positioning wheel 702 to move towards the direction of the through hole 31, the first transmission rod 714 drives the second transmission rod 715 to move towards the direction of the through hole 31 through the inclined surface, the second transmission rod 715 drives the movable end of the second telescopic rod 711 to extend, and drives the second positioning wheel 712 to move towards the direction of the through hole 31; when the probe 1 is inserted into the through hole 31 and contacts the second positioning wheel 712, the second positioning wheel 712 is moved away from the through hole 31, the second positioning wheel 712 drives the movable end of the second telescopic rod 711 to shorten, drives the second transmission rod 715 to move away from the through hole 31, the second transmission rod 715 drives the first transmission rod 714 to move away from the through hole 31, the first transmission rod 714 drives the push rod 53 to move away from the through hole 31, the push rod 53 drives the first telescopic rod 51 to compress, the second spring 52 is compressed, and the first positioning block 701 and the first positioning wheel 702 are also moved away from the through hole 31, so as to realize the synchronous movement of the first positioning wheel 702 and the second positioning wheel 712.

[0063] When the probe 1 is in contact with the third positioning wheel 722 in the through hole 31, the third positioning wheel 722 drives the movable end of the third telescopic rod 721 to shorten, and drives the third transmission rod 724 to move away from the through hole 31, the third transmission rod 724 drives the second transmission rod 715 to move away from the through hole 31 through the inclined surface, thereby realizing the effect that the third positioning wheel 722, the second positioning wheel 712 and the first positioning wheel 702 move away from the through hole 31 synchronously. Through the synchronous movement of the first positioning wheel 702, the second positioning wheel 712 and the third positioning wheel 722, and the tension of the second spring 52, the probe 1 can be maintained in the well center.

[0064] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A geophysical wellsite assist device, characterized by: The utility model provides a kind of probe positioning device, including fixed frame (2), positioning column (3), first positioning assembly (4), second positioning assembly (5), linkage assembly (6) and positioning component (7);The fixed frame (2) is horizontally arranged in cross type, and center hole (21) is opened in the center of the fixed frame (2);The positioning column (3) is coaxially arranged with the center hole (21), the top surface of the positioning column (3) is fixedly connected with the bottom surface of the fixed frame (2), the top surface center of the positioning column (3) is opened with through-hole (31), the through-hole (31) penetrates the positioning column (3) along vertical direction, the axis direction of the through-hole (31) coincides with the axis direction of the center hole (21), the size of the center hole (21) and the through-hole (31) is adapted to the size of probe (1);The first positioning assembly (4) is arranged below the fixed frame (2), for positioning the fixed frame (2) in well center;The second positioning assembly (5) is arranged in the positioning column (3), for positioning probe (1) in well center;The linkage assembly (6) is arranged below the fixed frame (2), and is used to drive the first positioning assembly (4) to work;The positioning component (7) is arranged in the positioning column (3), and is used to drive probe (1) to be positioned in well center;The second positioning assembly (5) includes first telescopic rod (51), second spring (52) and push rod (53);The positioning column (3) is hollow structure, the first telescopic rod (51) is horizontally arranged, the fixed end of the first telescopic rod (51) is fixedly connected with the side wall of the positioning column (3) away from the side of the through-hole (31), the movable end of the first telescopic rod (51) is fixedly connected with the push rod (53), the push rod (53) is vertically arranged, the second spring (52) is sleeved on the first telescopic rod (51), one end of the second spring (52) is fixedly connected with the side wall of the positioning column (3), the other end is fixedly connected with the push rod (53), the positioning component (7) is provided with two groups, two groups of the positioning component (7) are located at the top and bottom of the side of the push rod (53) away from the first telescopic rod (51) respectively, and two groups of the positioning component (7) are used for positioning probe (1) in well center;The positioning component (7) includes second telescopic rod (711), second positioning wheel (712), second connecting rod (713), first transmission rod (714) and second transmission rod (715), the second telescopic rod (711) is provided with two in each group of the positioning component (7), two second telescopic rods (711) are horizontally arranged and are arranged opposite to each other in horizontal direction, the fixed end of the second telescopic rod (711) is fixedly connected with the side wall of the positioning column (3) away from the side of the through-hole (31), and the movable end of the second telescopic rod (711) is fixedly connected with the central shaft of the second positioning wheel (712) through two second connecting rods (713).The inner side wall of the through hole (31) is provided with four second positioning openings (33), the second positioning openings (33) are oppositely distributed in pairs, each second positioning wheel (712) is slidably arranged in one second positioning opening (33); the first transmission rods (714) are also provided in each set of positioning components (7), the cross section of the first transmission rod (714) is L-shaped, the two first transmission rods (714) are symmetrically arranged with the push rod (53) as the center of symmetry, one end of the first transmission rod (714) is fixedly connected with the push rod (53); the second transmission rods (715) are also provided in each set of positioning components (7), the two second transmission rods (715) are also horizontally arranged, each second transmission rod (715) is fixedly connected with the movable end of one second telescopic rod (711); one end of the first transmission rod (714) away from the push rod (53) is inclined, one end of the second transmission rod (715) close to the first transmission rod (714) is also inclined, the first transmission rod (714) and the second transmission rod (715) are matched through corresponding inclined surfaces.

2. A geophysical well logging auxiliary device according to claim 1, characterized in that: The fixed rack (2) is provided with four sliding grooves (23) at the bottom, the cross sections of the four sliding grooves (23) are also cross-shaped, the first positioning assembly (4) comprises four sliding blocks (41), each of the sliding blocks (41) is slidingly arranged in one of the sliding grooves (23); one of the sliding grooves (23) is further provided with a first spring (42), one end of the first spring (42) is fixedly connected with the side wall of the sliding groove (23) near the side of the through hole (31), the other end is fixedly connected with the sliding block (41) in the sliding groove (23); the bottom of each sliding block (41) is fixedly connected with an abutting block (43), the linkage assembly (6) is arranged between the adjacent two abutting blocks (43), and the linkage assembly (6) is used for synchronously moving the four abutting blocks (43) towards the direction of approaching or moving away from the through hole (31).

3. A geophysical well logging auxiliary device according to claim 2, characterized in that: The linkage assembly (6) comprises linkage rods (61) and bidirectional telescopic rods (62), the linkage rods (61) are provided in four, each of the linkage rods (61) is located between the adjacent two abutting blocks (43), the linkage rod (61) is a telescopic rod, the fixed end of the linkage rod (61) is fixedly connected with the fixed rack (2), the bidirectional telescopic rods (62) are also provided in four, the fixed end of each of the bidirectional telescopic rods (62) is fixedly connected with the movable end of one of the linkage rods (61), and the two movable ends of each of the bidirectional telescopic rods (62) are hingedly connected with the adjacent two abutting blocks (43).

4. An apparatus according to claim 2, wherein: The longitudinal section of the sliding groove (23) is T-shaped, the longitudinal section of the sliding block (41) is also T-shaped and the size thereof is matched with the size of the sliding groove (23), one side of the abutting block (43) away from the through hole (31) is arc-shaped, and the outer surface of the abutting block (43) is made of an elastic material.

5. A geophysical well logging auxiliary device according to claim 4, characterized in that: The positioning component (7) comprises a first positioning block (701), a first positioning wheel (702) and a first connecting rod (703); the first positioning block (701) is horizontally arranged, the length direction of the first positioning block (701) is parallel to the length direction of the first telescopic rod (51), one end of the first positioning block (701) is fixedly connected with the push rod (53), and the other end is fixedly connected with the central shaft of the first positioning wheel (702) through two first connecting rods (703); two first positioning openings (32) which are vertically and oppositely arranged are formed in the inner side wall of the through hole (31), and each of the first positioning wheels (702) is slidingly arranged in the corresponding first positioning opening (32).

6. A geophysical well logging auxiliary device according to claim 5, characterized in that: The positioning component (7) further comprises a third telescopic rod (721), a third positioning wheel (722), a third connecting rod (723) and a third transmission rod (724); the third telescopic rod (721) is horizontally arranged, the fixed end of the third telescopic rod (721) is fixedly connected with the inner side wall of the positioning column (3), and the movable end of the third telescopic rod (721) is fixedly connected with the central shaft of the third positioning wheel (722) through two third connecting rods (723); in the same group of the positioning component (7), the first positioning wheel (702), the second positioning wheel (712) and the third positioning wheel (722) are located in the same horizontal plane; two third positioning openings (34) that are vertically and oppositely arranged are formed in the inner side wall of the through hole (31), and each third positioning wheel (722) is slidably arranged in one third positioning opening (34); the third transmission rod (724) is horizontally arranged, the movable end of the third telescopic rod (721) is fixedly connected with the third transmission rod (724), and the second transmission rod (715) is also L-shaped, one end of the second transmission rod (715) away from the first transmission rod (714) is inclined, and both ends of the third transmission rod (724) are also inclined, and the two ends of the third transmission rod (724) are matched with one end of two second transmission rods (715) away from the first transmission rod (714) through corresponding inclined surfaces.

7. A geophysical well logging auxiliary device according to claim 6, characterized in that: The outer surfaces of the first positioning wheel (702), the second positioning wheel (712) and the third positioning wheel (722) are made of elastic material.

8. An apparatus according to claim 1, wherein: Four ends of the fixing frame (2) are respectively provided with an installation hole (22), and the installation hole (22) is used for penetrating an expansion bolt to fix the fixing frame (2).

Images