Azimuth measuring instrument calibration device

Abstract

The utility model relates to the technical field of oil field geological exploration, in particular to a calibration device of an azimuth measuring instrument. The azimuth measuring instrument scale device comprises an upper seat body and a lower seat body, the upper seat body is arranged at the upper end of the lower seat body, the upper seat body and the lower seat body are fixed through a locking structure, and a first through groove with a semicircular section and penetrating front and back is formed in the middle area of the lower end of the upper seat body. A second through groove with a semicircular section and penetrating front and back is formed in the middle area of the upper end of the lower seat body, the first through groove and the second through groove jointly form a sleeve hole with a circular section, and horizontal instruments are installed on the front side, the rear side, the left side and the right side of the upper seat body respectively. The device has the advantages that the structural design is simple and reasonable, the problem of accuracy of the orientation of the optical cable outside the sleeve during permanent optical cable laying construction outside the sleeve can be effectively solved, accurate scales are provided for an instrument for measuring the orientation of the optical cable outside the sleeve in the later period, and reliable data are provided for directional perforation of the optical cable.

Description

Technical Field

[0001] The utility model relates to the technical field of oilfield geological exploration, in particular to a grading device for an azimuth measuring instrument. Background Art

[0002] With the continuous advancement of digital construction of oil and gas fields, the demand for full life cycle monitoring of oil and gas wells is becoming more and more urgent. As a result, the workload of laying permanent optical cables outside the casing, perforating to avoid optical cables, fracturing monitoring, and long-term monitoring of injection and production profiles is increasing. Among them, before perforating to avoid optical cables, the orientation of the optical cable outside the casing must be accurately measured.

[0003] Currently, most domestic instruments use imported MOT magnetic azimuth measurement instruments. However, MOT instruments have drawbacks such as long operation time, low accuracy, and an inability to determine the direction of optical cable winding. This results in a low success rate for monitoring oil and gas wells throughout their lifecycle using permanent optical cables outside casing. In the past two years, some domestic companies have developed acoustic beacons and magnetic beacon measurement instruments to replace MOT instruments. However, regardless of the instrument used to measure the azimuth of optical cables outside casing, it must be used in conjunction with the corresponding casing and beacon. Before running downhole, the instrument must be precisely calibrated to determine the measurement accuracy and error value, providing reliable data for subsequent fiber-optic directional perforating. For example, the utility model patent "A Portable Calibration Device for a Three-Parameter Well Logging Instrument," with authorization announcement number CN217132449U, discloses a portable calibration device for a three-parameter well logging instrument. The device's sealed chamber is connected to a multi-function digital pressure gauge. After pre-calibration of the multi-function digital pressure gauge, it can directly display the specific force value, providing enhanced scale readability and eliminating the need for on-site data conversion. The device is mounted on the three-parameter instrument and can be detached and moved for storage when not in use. This eliminates hydraulic oil leakage and makes storage and portability simpler. The device utilizes mature, commercially available standard components with a short procurement cycle and simple replacement, saving maintenance time and improving efficiency. However, this technical solution requires supporting electronic equipment during use, which can be inconvenient.

[0004] Another example is the utility model patent "A method and device for decoupling azimuth gamma while drilling" with authorization announcement number CN108625845B. This patent discloses a method and device for decoupling azimuth gamma while drilling. The calibration device is used to measure and record the gamma count value and API true value of the simulated formation in each sector. Each time the zero line of the gamma instrument is aligned with the marking line of the calibration device, the sector calibration coefficient is always K1. The calibration coefficient of the adjacent sectors in the clockwise or counterclockwise direction is obtained through this measurement. A relationship equation consisting of the count value, the true value of the calibration and the calibration coefficient to be solved is obtained. The gamma ray counting value of the formations in other sectors is recorded and measured in sequence according to the above method until the gamma ray instrument has measured all the simulated formations in the sectors. By recording the measured count values ​​of each sector within a certain period of time, the relationship equation established between the count value, the true value of the scale and the scale coefficient is used to solve the contribution of each direction to the gamma ray instrument through a numerical method, and then the true radioactivity intensity of the corresponding formation is calculated, thereby obtaining the true radioactivity intensity of the formation, which is convenient for geological data comparison and formation interface identification. However, the instrument is expensive and is an electronic instrument, which is inconvenient to use underground.

[0005] Based on this, it is necessary to develop a simple azimuth measuring instrument calibration device. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a grading device for an orientation measuring instrument, which effectively overcomes the defects of the prior art.

[0007] The technical solution of the utility model to solve the above technical problems is as follows:

[0008] A directional measuring instrument scale device includes an upper base and a lower base. The upper base is arranged at the upper end of the lower base, and the two are fixed by a locking structure. A first through groove with a semicircular cross-section and running through the front and back is provided in the middle area of ​​the lower end of the upper base. A second through groove with a semicircular cross-section and running through the front and back is provided in the middle area of ​​the upper end of the lower base. The first through groove and the second through groove together constitute a sleeve hole with a circular cross-section. Level instruments are respectively installed on the front, back, left and right sides of the upper base.

[0009] On the basis of the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, the above-mentioned level instrument is a level bubble.

[0011] Furthermore, the front, back, left and right sides of the upper base are respectively provided with horizontally extending installation grooves, and the leveling instruments are respectively embedded in the corresponding installation grooves.

[0012] Furthermore, the upper seat and the lower seat are both rectangular seat bodies.

[0013] Furthermore, a handle is provided at the upper end of the upper seat body.

[0014] Furthermore, the handle is a door-type handle and is arranged perpendicular to the upper seat.

[0015] Furthermore, at least two vertical positioning pins are respectively provided on the left and right sides of the lower end of the upper seat body, and positioning holes adapted to the positioning pins are respectively provided on the left and right sides of the upper end of the lower seat body. The positioning pins are inserted into the positioning holes, and the positioning pins and the positioning holes constitute the locking structure.

[0016] Furthermore, the locking structure includes a first magnetic piece and a metal piece adsorbed and connected to the first magnetic piece. The first magnetic piece is embedded on the left and right sides of the lower end of the upper seat body, and the metal pieces corresponding to the first magnetic piece are embedded on the left and right sides of the upper end of the lower seat body.

[0017] Furthermore, the above-mentioned locking structure includes two first connecting plates and two second connecting plates. The two above-mentioned first connecting plates are respectively arranged at the left and right ends of the above-mentioned upper seat body, and the two above-mentioned second connecting plates are respectively arranged at the left and right ends of the above-mentioned lower seat body. The above-mentioned first connecting plates and the second connecting plates on the corresponding sides are connected by bolts passing through the two.

[0018] Furthermore, one end of the upper seat is hinged to one end of the lower seat, the other end of the upper seat is provided with a first side plate, the other end of the lower seat is provided with a second side plate, and the first side plate and the second side plate are connected by bolts passing through the two.

[0019] The beneficial effects of the utility model are: the structural design is simple and reasonable, and it can effectively solve the problem of the accuracy of the position of the optical cable outside the casing during the installation of permanent optical cable outside the casing, provide accurate scales for instruments for later measuring the position of the optical cable outside the casing, and provide reliable data for directional perforating of optical cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural cross-sectional view of an embodiment of the azimuth measuring instrument scale device of the present utility model;

[0021] Figure 2 It is a structural cross-sectional view of another embodiment of the azimuth measuring instrument scale device of the present utility model;

[0022] Figure 3 This is a structural cross-sectional view of another embodiment of the azimuth measuring instrument scale device of the present utility model;

[0023] Figure 4 A structural cross-sectional view of yet another embodiment of the azimuth measuring instrument scale device of the present utility model;

[0024] Figure 5 This is a structural stereogram of the scale device of the azimuth measuring instrument of the present utility model;

[0025] Figure 6 This is a structural stereogram of the scale device of the azimuth measuring instrument of the present invention provided with a handle;

[0026] Figure 7 The figure is a structural diagram of another shape of the handle of the azimuth measuring instrument scale device of the present invention.

[0027] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0028] 1. Upper base; 2. Lower base; 3. Level; 11. First through slot; 12. Handle; 13. Positioning pin; 14. First magnetic sheet; 15. Metal sheet; 16. First connecting plate; 17. Second connecting plate; 18. First side plate; 19. Second side plate; 21. Second through slot. DETAILED DESCRIPTION

[0029] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0030] Example: Figures 1 to 6 As shown, the azimuth measuring instrument scale device of this embodiment includes an upper body 1 and a lower body 2. The upper body 1 is arranged at the upper end of the lower body 2, and the two are fixed by a locking structure. The middle area of ​​the lower end of the upper body 1 is provided with a first through groove 11 with a semicircular cross-section and running through the front and back. The middle area of ​​the upper end of the lower body 2 is provided with a second through groove 21 with a semicircular cross-section and running through the front and back. The first through groove 11 and the second through groove 21 together constitute a sleeve hole with a circular cross-section. The front, back, left and right sides of the upper body 1 are respectively equipped with a level instrument 3.

[0031] The azimuth measuring instrument calibration device of this embodiment can calibrate the precise position of each optical fiber fixing card during the installation of permanent optical cable outside the casing. Each time a column of casing is lowered during the installation, the specific position of the optical fiber downhole is determined. Furthermore, during the installation of permanent optical cable outside the casing, the fiber winding direction downhole is determined. The specific operation process is as follows:

[0032] During operation, place the sleeve horizontally on the instrument rack, adjust the height of the instrument rack, mark a reference point on the sleeve as a reference point, and then install the azimuth measuring instrument scale device on the sleeve (specifically, make the upper seat 1 and the lower seat 2 embrace the sleeve), and then rotate the sleeve until the level bubble on the azimuth measuring instrument scale device is in a horizontal state. The first 90-degree angle is determined and completed. Fix the optical fiber fixing card on the sleeve. The position of the optical fiber fixing card at this time is 90 degrees. After rotating the sleeve clockwise to 90 degrees, the level bubble on the azimuth measuring instrument scale device is in a horizontal state. Fix the optical fiber fixing card on the sleeve again. The position of the optical fiber fixing card at this time is 180 degrees. Repeat this process until the 360-degree calibration task of the sleeve is completed.

[0033] On the whole, the structural design of the azimuth measuring instrument scale device of this embodiment is simple and reasonable, which can effectively solve the problem of the accuracy of the azimuth of the optical cable outside the casing during the installation of permanent optical cables outside the casing, provide accurate scales for instruments that measure the azimuth of the optical cable outside the casing in the later stage, and provide reliable data for directional perforating of optical cables.

[0034] As a preferred embodiment, the level instrument 3 is a bubble level.

[0035] In the above embodiment, the level instrument 3 adopts a conventional level bubble on the market, not an electronic device. During operation, the position of the bubble of the level bubble can be used to determine whether the device is level. Its use cost is low and it can effectively assist in determining the level.

[0036] As a preferred embodiment, the front, back, left and right sides of the upper base body 1 are respectively provided with horizontally extending installation grooves, and the level instruments 3 are respectively embedded in the corresponding installation grooves.

[0037] In the above embodiment, the level instrument 3 is installed in the corresponding installation slot in an embedded manner and does not protrude from the installation slot. The appearance is more beautiful and does not feel abrupt.

[0038] In this embodiment, a transparent cover plate can be provided at the notch of the installation slot to seal the installation slot, thereby providing a certain degree of protection for the level instrument 3 and making cleaning more convenient.

[0039] As a preferred embodiment, the upper seat 1 and the lower seat 2 are both rectangular seat bodies.

[0040] In the above embodiment, the upper body 1 and the lower body 2 are both designed as rectangular blocks with relatively clear four sides, which can clearly indicate the direction and are convenient to use.

[0041] As a preferred embodiment, a handle 12 is provided at the upper end of the upper seat body 1 .

[0042] In the above embodiment, the handle 12 is designed to facilitate applying external force to lift the entire device for movement or transportation.

[0043] In this embodiment, the handle 12 is a door handle (such as Figure 6 As shown), and is arranged vertically with the upper body 1, so as to facilitate gripping and taking. Of course, the handle 12 can also be L-shaped (as shown). Figure 7 shown).

[0044] The design of the locking structure in the azimuth measuring instrument scale device of this embodiment may include at least the following structural forms:

[0045] 1) If Figure 1 As shown, at least two vertical positioning pins 13 are respectively provided on the left and right sides of the lower end of the upper seat body 1, and positioning holes adapted to the positioning pins 13 are respectively provided on the left and right sides of the upper end of the lower seat body 2. The positioning pins 13 are inserted into the positioning holes, and the positioning pins 13 and the positioning holes constitute the locking structure.

[0046] In the above-mentioned solution 1), the upper and lower bodies 1 and 2 can be assembled together outside the pipeline by inserting the positioning pins 13 into the positioning holes. More specifically, after the positioning pins 13 are inserted into the positioning holes, the upper and lower bodies 1 and 2 inherently possess a certain engagement force, ensuring that the upper and lower bodies 1 and 2 can be held together outside the pipeline without further reinforcement. When separation is required, an external force is applied in the opposite direction along the long axis of the positioning pins 13 to separate the upper and lower bodies 1 and 2, resulting in a relatively simple and convenient operation.

[0047] 2) If Figure 2 As shown, the locking structure includes a first magnetic piece 14 and a metal piece 15 adsorbed and connected to the first magnetic piece 14. The first magnetic piece 14 is embedded on the left and right sides of the lower end of the upper seat 1, and the metal pieces 15 corresponding to the first magnetic piece 14 are embedded on the left and right sides of the upper end of the lower seat 2.

[0048] In the above-mentioned solution 2), the upper seat 1 and the lower seat 2 are connected by adsorption. Specifically, when the lower end surface of the upper seat 1 and the upper end surface of the lower seat 2 are close to each other, the first magnetic sheet 14 and the metal sheet 15 on the corresponding sides will attract each other under the action of magnetic force until the two are adsorbed. After adsorption, the two will not separate in the absence of external interference. When they need to be disassembled, the external force overcomes the adsorption force, so that the two can be separated. The operation is relatively simple.

[0049] 3) If Figure 3As shown, the locking structure includes two first connecting plates 16 and two second connecting plates 17. The two first connecting plates 16 are respectively arranged at the left and right ends of the upper seat body 1, and the two second connecting plates 17 are respectively arranged at the left and right ends of the lower seat body 2. The first connecting plates 16 and the second connecting plates 17 on the corresponding sides are connected by bolts passing through the two.

[0050] In the above-mentioned solution 3), after the lower end surface of the upper seat body 1 and the upper end surface of the lower seat body 2 are fitted together, the connection can be achieved by passing through the bolts through the screw holes on the first connecting plate 16 and the second connecting plate 17 on the corresponding sides and the nuts screwed with the bolts. When disassembling, the bolts can be removed.

[0051] 4) If Figure 4 As shown, one end of the upper seat body 1 is hinged to one end of the lower seat body 2, the other end of the upper seat body 1 is provided with a first side plate 18, and the other end of the lower seat body 2 is provided with a second side plate 19, and the first side plate 18 and the second side plate 19 are connected by bolts passing through the two.

[0052] In the above-mentioned scheme 4), one end of the upper seat body 1 is rotatably connected to one end of the lower seat body 2 by a pin shaft (a connecting ear seat can be provided on the outer side of one end of the two, the two connecting ear seats fit together, and are rotatably connected by a pin shaft passing through the two). The upper seat body 1 and the lower seat body 2 are closed and opened in a flipping manner. After closing, the first side plate 18 and the second side plate 19 fit together, and are connected by a bolt passing through the two and a nut screwed on the bolt.

[0053] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0054] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0055] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0056] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0057] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" 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 present invention. In this specification, the schematic representations of the above terms do 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. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0058] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A directional measuring instrument calibration device, characterized in that: The utility model comprises an upper seat (1) and a lower seat (2), wherein the upper seat (1) is arranged on the upper end of the lower seat (2), and the two are fixed by a locking structure, a first through groove (11) with a semicircular cross section and extending front to back is provided in the middle area of ​​the lower end of the upper seat (1), and a second through groove (21) with a semicircular cross section and extending front to back is provided in the middle area of ​​the upper end of the lower seat (2), the first through groove (11) and the second through groove (21) together constitute a sleeve hole with a circular cross section, and a level instrument (3) is respectively installed on the front, back, left and right sides of the upper seat (1).

2. The azimuth measuring instrument calibration device according to claim 1, characterized in that: The level instrument (3) is a level bubble.

3. The azimuth measuring instrument calibration device according to claim 2, characterized in that: The upper seat (1) is provided with horizontally extending mounting grooves on the front, back, left, and right sides, respectively, and the level instruments (3) are respectively embedded in the corresponding mounting grooves.

4. The azimuth measuring instrument calibration device according to claim 1, characterized in that: The upper seat (1) and the lower seat (2) are both rectangular seat bodies.

5. The azimuth measuring instrument calibration device according to claim 1, characterized in that: A handle (12) is provided at the upper end of the upper seat body (1).

6. The azimuth measuring instrument calibration device according to claim 5, characterized in that: The handle (12) is a door-type handle and is arranged vertically with respect to the upper seat (1).

7. A directional measuring instrument calibration device according to any one of claims 1 to 6, characterized in that: At least two vertical positioning pins (13) are provided at intervals on the left and right sides of the lower end of the upper seat body (1), and positioning holes adapted to the positioning pins (13) are provided on the left and right sides of the upper end of the lower seat body (2). The positioning pins (13) are inserted into the positioning holes, and the positioning pins (13) and the positioning holes constitute the locking structure.

8. A directional measuring instrument calibration device according to any one of claims 1 to 6, characterized in that: The locking structure comprises a first magnetic piece (14) and a metal piece (15) adsorbed and connected to the first magnetic piece (14); the first magnetic piece (14) is respectively embedded on the left and right sides of the lower end of the upper seat (1); and the metal piece (15) corresponding to the first magnetic piece (14) is respectively embedded on the left and right sides of the upper end of the lower seat (2).

9. A directional measuring instrument calibration device according to any one of claims 1 to 6, characterized in that: The locking structure comprises two first connecting plates (16) and two second connecting plates (17), wherein the two first connecting plates (16) are respectively arranged at the left and right ends of the upper seat (1), and the two second connecting plates (17) are respectively arranged at the left and right ends of the lower seat (2), and the first connecting plates (16) and the second connecting plates (17) on the corresponding sides are connected by bolts passing through the two.

10. The azimuth measuring instrument calibration device according to any one of claims 1 to 6, characterized in that: One end of the upper seat body (1) is hinged to one end of the lower seat body (2), the other end of the upper seat body (1) is provided with a first side plate (18), and the other end of the lower seat body (2) is provided with a second side plate (19), and the first side plate (18) and the second side plate (19) are connected by bolts passing through the two.

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