Universal measuring device for logging instrument

Abstract

The utility model discloses a general measuring device for a logging instrument, and relates to the technical field of borehole diameter measuring equipment. The general measuring device comprises an arch-shaped elastic plate, an elastic assembly, a fixing assembly and a detecting assembly. The fixing assembly comprises an elastic telescopic rod, a channel for transporting gas or liquid is formed in one end of the elastic telescopic rod, the inlet end of the channel is connected with a fluid pipe, the other end of the elastic telescopic rod is fixedly connected with a baffle ring used for limiting, and one side of the baffle ring is fixedly connected with a first sealing ring. A guide sleeve is fixedly connected to one side of the first sealing ring, a second sealing ring is fixedly connected to the side, close to the fluid pipe, of the guide sleeve, and the arch-shaped elastic plate and the elastic assembly are fixedly connected to the elastic telescopic rod. The elastic assembly can be communicated with a gas source outside a well and / or a liquid injection device through a channel formed in the elastic telescopic rod, so that the elastic bag body can be inflated and / or injected with liquid.

Description

Technical Field

[0001] The present invention relates to the technical field of borehole diameter measuring devices, and in particular to a general measuring device for logging instruments. Background Art

[0002] A caliper is an instrument for measuring the diameter of a borehole. There are mainly two structures of calipers: one is a cantilever caliper for measuring the borehole diameter independently; the other is to use the push arms of some logging instruments (such as density meters, borehole wall neutron logging instruments or micro-laterolog instruments, etc.) to measure while these instruments are logging. Conventional borehole diameter logging instruments are mostly four-arm or six-arm. The instrument needs to be centered for measurement. There is usually a set of complex power transmission mechanisms inside the instrument. In order to ensure the pressure balance inside and outside the instrument, the inside also needs to be filled with hydraulic oil and an additional pressure balance mechanism is attached, resulting in a generally complex structure of the instrument, and the length, weight and R & D and manufacturing costs of the instrument all increase accordingly. Summary of the Invention

[0003] By providing a general measuring device for logging instruments in the embodiments of the present application, the problem that the caliper cannot be lifted and lowered smoothly during the lifting process in the prior art is solved. The design of a general measuring device for logging instruments reduces the labor intensity, is convenient to use, has good stability, the soft components are not easily damaged, and even if the soft components are damaged, it can still be used for a certain period of time.

[0004] The embodiments of the present application provide a general measuring device for logging instruments, including a fixing component, an arc-shaped elastic plate, a detection component and an elastic component;

[0005] The fixing component includes an elastic telescopic rod. A channel for transporting gas or liquid is opened inside one end of the elastic telescopic rod. The inlet end of the channel is connected to a fluid pipe. The other end of the elastic telescopic rod is fixedly connected with a limiting retaining ring. A first sealing ring is fixedly connected to one side of the retaining ring. A guide sleeve is fixedly connected to one side of the first sealing ring. A second sealing ring is fixedly connected to the side of the guide sleeve close to the fluid pipe;

[0006] The arc-shaped elastic plate and the elastic component are fixedly connected to the elastic telescopic rod. The arc-shaped elastic plate includes a first support plate and a second support plate. One end of the first support plate is fixedly connected with a leaf spring. The second support plate is fixedly connected to the side of the leaf spring away from the first support plate;

[0007] The elastic component is located inside the arc-shaped elastic plate. The elastic component is used to support the arc-shaped elastic plate during the detection of the well diameter to ensure the stability of the arc-shaped elastic plate. The elastic component is an elastic capsule. The elastic component can be communicated with an external gas source and / or a liquid injection device through the channel opened inside the elastic telescopic rod, so that the elastic capsule can be inflated and / or injected with liquid.

[0008] The elastic component includes a first bladder and a second bladder. The first bladder and the second bladder are coaxially arranged and communicate with an external gas source and / or a liquid injection device through a channel provided inside the elastic telescopic rod. By adjusting the liquid volume in the first bladder and the second bladder, the center of gravity position of the caliper can be adjusted.

[0009] Both the first bladder and the second bladder are ellipsoidal in shape. Their initial shapes and sizes are the same, and the position of the symmetry point between the first bladder and the second bladder corresponds to the center position of the arcuate elastic plate.

[0010] The detection component includes a slider, a detection rod, a travel limit pin, and a potentiometer component. One end of the slider is fixedly connected with a detection rod for detection. A potentiometer component is arranged inside the detection rod, and a travel limit pin for restricting offset is fixedly connected to the side of the detection rod away from the slider.

[0011] A first installation groove for installing the arcuate elastic plate is provided on the elastic telescopic rod.

[0012] A second installation groove for installing the elastic component is provided on the elastic telescopic rod. Beneficial effects

[0013] The airbag is designed to be a structure that can be filled with water. By precisely controlling the water filling volume, the operator can flexibly adjust the center of gravity of the instrument to adapt to the changes in the wellbore diameter and the irregularity of the wellbore wall. When the instrument descends, if it encounters an area with a sudden change in the wellbore diameter or unstable wellbore wall, the operator can quickly adjust the water filling volume of the airbag to keep the center of gravity of the instrument in a more stable position, reducing the risk of shaking and tilting. In addition, the operation of the water-filled airbag type caliper is relatively simple. It is usually equipped with an easy-to-operate control system, such as a control panel or a remote control, allowing the operator to control the water filling and draining of the airbag through simple button operations. This design not only improves work efficiency but also reduces the requirements for the operator's professional skills, enabling more people to easily get started and operate proficiently. Description of the drawings

[0014] Figure 1 One of the three-dimensional views of a general measurement device for a well logging instrument according to the present invention;

[0015] Figure 2 An exploded view of a general measurement device for a well logging instrument according to the present invention;

[0016] Figure 3 Another three-dimensional view of the structure of a general measurement device for a well logging instrument according to the present invention;

[0017] Figure 4 A sectional structure view of a general measurement device for a well logging instrument according to the present invention;

[0018] Figure 5Schematic perspective view of the detection component structure of a general measurement device for a logging instrument according to the present invention;

[0019] Figure 6 Schematic perspective view of the structure of the bow-shaped elastic plate of a general measurement device for a logging instrument according to the present invention.

[0020] In the figure:

[0021] 100, fixed component; 110, elastic telescopic rod; 120, first installation groove; 130, second installation groove; 140, first sealing ring; 150, second sealing ring; 160, retaining ring; 170, fluid pipe; 180, guide sleeve; 200, bow-shaped elastic plate; 210, first support plate; 220, leaf spring; 230, second support plate; 300, detection component; 310, slider; 320, detection rod; 330, stroke limit pin; 340, potentiometer component; 400, elastic component; 410, first bladder; 420, second bladder. Detailed implementation manners

[0022] To facilitate the understanding of the present invention, the present application will be described more comprehensively with reference to the relevant drawings; the preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein; on the contrary, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

[0023] It should be noted that the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs; the terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0025] Please refer to Figure 1 , which is a schematic perspective view of the structure of a general measurement device for a logging instrument according to the present invention; the present application optimizes and improves the existing caliper instrument, and uses an airbag with an elliptical spherical structure to achieve stable ascending and descending; it realizes that the caliper instrument can reduce the labor intensity of maintenance personnel during operation and maintenance, is convenient to use, and has good stability.

[0026] Example 1: As Figures 1 to 6As shown in the figure, a fixing component 100, a bow-shaped elastic plate 200, a detection component 300 and an elastic component 400 of a multi-functional steel structure welding nesting mechanism of the present application;

[0027] The fixing component 100 includes an elastic telescopic rod 110;

[0028] One end of the elastic telescopic rod 110 is internally provided with a channel for transporting gas or liquid, and the inlet end of the channel is connected to a fluid pipe 170;

[0029] The other end of the elastic telescopic rod 110 is fixedly connected with a retaining ring 160 for limiting;

[0030] One side of the retaining ring 160 is fixedly connected with a first sealing ring 140;

[0031] One side of the first sealing ring 140 is fixedly connected with a guide sleeve 180;

[0032] One side of the guide sleeve 180 close to the fluid pipe 170 is fixedly connected with a second sealing ring 150;

[0033] The bow-shaped elastic plate 200 and the elastic component 400 are fixedly connected to the elastic telescopic rod 110;

[0034] The bow-shaped elastic plate 200 includes a first support plate 210 and a second support plate 230;

[0035] One end of the first support plate 210 is fixedly connected with a leaf spring 220;

[0036] The side of the leaf spring 220 away from the first support plate 210 is fixedly connected with a second support plate 230;

[0037] The elastic component 400 is located inside the bow-shaped elastic plate 200;

[0038] The elastic component 400 is used to support the bow-shaped elastic plate 200 during well diameter detection to ensure the stability of the bow-shaped elastic plate 200. The elastic component 400 is an elastic capsule, and the elastic component 400 can be communicated with an external well gas source and / or a liquid injection device through a channel opened inside the elastic telescopic rod 110, so that the elastic capsule can be inflated and / or injected with liquid;

[0039] The elastic component 400 includes a first capsule 410 and a second capsule 420. The first capsule 410 and the second capsule 420 are coaxially arranged and are communicated with an external well gas source and / or a liquid injection device through a channel opened inside the elastic telescopic rod 110. By adjusting the liquid volume in the first capsule 410 and the second capsule 420, the center of gravity position of the well diameter gauge can be adjusted.

[0040] The first bladder 410 and the second bladder 420 are both ellipsoidal, with the same initial shape and size, and the position of the symmetry point between the first bladder 410 and the second bladder 420 corresponds to the center position of the arcuate elastic plate 200.

[0041] The detection assembly 300 includes a slider detection rod 320, a travel limit pin 330, and a potentiometer assembly 340. One end of the slider 310 is fixedly connected to a detection rod 320, a travel limit pin 330, and a potentiometer assembly 340 for detection.

[0042] One end of the slider 310 is fixedly connected to a detection rod 320 for detection. A potentiometer assembly 340 is arranged inside the detection rod 320. A travel limit pin 330 for restricting deviation is fixedly connected to the side of the detection rod 320 away from the slider 310.

[0043] A first installation groove 120 for installing the arcuate elastic plate 200 is formed on the elastic telescopic rod 110.

[0044] A second installation groove 130 for installing the elastic assembly 400 is formed on the elastic telescopic rod 110.

[0045] As the caliper descends, the liquid bladder will be filled with water according to the change of the well diameter, so as to adaptively adjust its shape and size to better fit the well wall. Through the filling of the liquid bladder, the caliper can more accurately measure the size and shape of the well diameter, reducing the measurement error caused by the change of the well diameter.

[0046] By controlling the liquid volume, the control of the center stability of the caliper can be achieved. The increase or decrease of the liquid volume will affect the buoyancy and supporting force of the bladder, thereby adjusting the position of the caliper in the well and keeping it stable.

[0047] The control of the center stability is achieved by controlling the liquid volume, ensuring the stable position of the caliper in the well and reducing the measurement error caused by the shaking or deviation of the instrument. It has low working intensity, simple operation, and high reliability and stability.

[0048] Embodiment 2: In a horizontal well, the center of the detection device is not easy to control. In order to further improve the measurement accuracy of the eccentric caliper, a second bladder 420 is added to adjust the center position of the device.

[0049] It also includes a second bladder 420, which is an ellipsoid. The first bladder 410 and the second bladder 420 are coaxial and communicate with an external gas source and / or a liquid injection device through a channel provided inside the elastic telescopic rod 110. By adjusting the liquid volume in the first bladder 410 and the second bladder 420, the center of gravity position of the caliper can be adjusted. Both the first bladder 410 and the second bladder 420 are ellipsoidal, with the same initial shape and size, and the position of the symmetry point between the first bladder 410 and the second bladder 420 corresponds to the center position of the arcuate elastic plate 200. The first bladder 410 and the second bladder 420 are respectively provided with connected fluid pipes, and the fluid pipes extend out from the pipes inside the elastic telescopic rod 110.

[0050] After the caliper is lowered to a predetermined depth, the first liquid bladder starts to work and expands or contracts adaptively according to the actual situation of the well diameter. If the direction of the first liquid bladder deviates during the expansion or contraction process, it may cause the caliper to not accurately fit the well wall, thereby affecting the measurement accuracy. Intervention of the second liquid bladder: When the direction deviation of the first liquid bladder is detected, the second liquid bladder will be immediately activated and intervene.

[0051] The position and design of the second liquid bladder cooperate with those of the first liquid bladder to ensure that the direction deviation can be corrected when necessary.

[0052] Cooperative work of the two bladders: The first liquid bladder and the second liquid bladder work together to jointly adjust the attitude of the caliper, ensuring that the caliper can accurately fit the well wall. The cooperative effect of the two bladders can effectively reduce the direction deviation and improve the measurement stability and accuracy.

[0053] The combined use of the first liquid bladder and the second liquid bladder in the caliper does bring many advantages. It not only makes the operation more convenient but also significantly improves the stability of the device. They adapt to the change of the well diameter through the pressure change of the internal liquid, thereby ensuring that the caliper can closely fit the well wall for accurate measurement. When the well diameter changes, the liquid bladders will make adaptive adjustments according to the actual situation, ensuring the stability and measurement accuracy of the caliper. The combined use of the first liquid bladder and the second liquid bladder further enhances this adaptive ability. They can work separately or simultaneously and make adjustments according to the specific change situation of the well diameter. When the well diameter changes greatly, the two liquid bladders can work simultaneously to jointly bear the pressure change, making the caliper fit the well wall more stably. In the case of a small change in the well diameter, only one liquid bladder can be used for adjustment, which not only ensures the measurement accuracy but also saves energy. In addition, this combined use also makes the caliper more convenient to use. The operator only needs to perform simple operations to control the working states of the two liquid bladders without complex adjustments. This not only improves the work efficiency but also reduces the operation difficulty, making the caliper easier to use and maintain.

[0054] The combined use of the first liquid airbag and the second liquid airbag in the caliper makes the use of the caliper more convenient and stable by enhancing the adaptive ability and simplifying the operation method. This design not only improves the measurement accuracy and efficiency.

[0055] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A universal measuring device for a well logging instrument, characterized in that: include: An arched elastic plate (200), an elastic component (400), a fixing component (100) and a detection component (300); The fixing assembly (100) comprises an elastic telescopic rod (110), one end of the elastic telescopic rod (110) is provided with a channel for transporting gas or liquid, the inlet end of the channel is connected to a fluid pipe (170), the other end of the elastic telescopic rod (110) is fixedly connected to a retaining ring (160) for limiting position, one side of the retaining ring (160) is fixedly connected to a first sealing ring (140), one side of the first sealing ring (140) is fixedly connected to a guide sleeve (180), and the side of the guide sleeve (180) close to the fluid pipe (170) is fixedly connected to a second sealing ring (150); The bow-shaped elastic plate (200) and the elastic component (400) are fixedly connected to the elastic telescopic rod (110); the bow-shaped elastic plate (200) comprises a first support plate (210) and a second support plate (230); one end of the first support plate (210) is fixedly connected to a leaf spring (220); and a side of the leaf spring (220) away from the first support plate (210) is fixedly connected to the second support plate (230); The elastic component (400) is located inside the arched elastic plate (200). The elastic component (400) is used to support the arched elastic plate (200) during well diameter detection to ensure the stability of the arched elastic plate (200). The elastic component (400) is an elastic sac. The elastic component (400) can be connected to an air source and / or a liquid injection device outside the well through a channel opened inside the elastic telescopic rod (110), so that the elastic sac can be inflated and / or injected with liquid.

2. A universal measuring device for well logging instruments as claimed in claim 1, characterized in that: The elastic component (400) comprises a first bladder (410) and a second bladder (420); the first bladder (410) and the second bladder (420) are coaxially arranged and connected to an external gas source and / or a liquid injection device via a channel provided inside the elastic telescopic rod (110); and the center of gravity position of the caliper can be adjusted by adjusting the amount of liquid in the first bladder (410) and the second bladder (420).

3. A universal measuring device for well logging instruments as claimed in claim 2, characterized in that: The first capsule (410) and the second capsule (420) are both ellipsoidal in shape, have the same initial shape and size, and the position of the symmetry point between the first capsule (410) and the second capsule (420) corresponds to the center position of the arched elastic plate (200).

4. A universal measuring device for well logging instruments as claimed in claim 1, characterized in that: The detection assembly (300) comprises a slider (310), a detection rod (320), a travel limit pin (330), and a potentiometer assembly (340); one end of the slider (310) is fixedly connected to a detection rod (320) for detection; the potentiometer assembly (340) is arranged inside the detection rod (320); and a travel limit pin (330) for limiting displacement is fixedly connected to a side of the detection rod (320) away from the slider (310).

5. A universal measuring device for well logging instruments as claimed in claim 1, characterized in that: The elastic telescopic rod (110) is provided with a first mounting groove (120) for mounting the bow-shaped elastic plate (200).

6. A universal measuring device for well logging instruments as claimed in claim 1, characterized in that: The elastic telescopic rod (110) is provided with a second installation groove (130) for installing the elastic component (400).

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