MWD orientation instrument centralizer dismounting device

Abstract

The utility model provides a dismounting device for a centralizer of an MWD (Measurement While Drilling) directional instrument. The device comprises a device main body, a buckle mechanism and a driving assembly, and the device main body can fix an instrument body and comprises two main body clamping plates and a plurality of first connecting assemblies; wherein one sides of the two main body clamping plates are hinged, and the other sides of the two main body clamping plates can be connected through a first connecting assembly; the buckling mechanism can fix the centralizer and comprises two centralizer clamping plates and a plurality of second connecting assemblies. Wherein one sides of the two centralizer clamping plates are hinged, and the other sides of the two centralizer clamping plates can be connected through a second connecting assembly; and the driving mechanism comprises at least one group of driving assemblies, and the driving assemblies can enable the device main body and the buckling mechanism to move relatively. A damaged centralizer can be easily and quickly disassembled on site, the utilization rate of an on-site orientation instrument is improved, faults of the orientation instrument can be found in time, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of oil drilling, in particular to a disassembly device for a centralizer of an MWD directional instrument. Background Art

[0002] When using the MWD wireless inclinometer while drilling (MWD) instrument in oil directional drilling, the instrument is strung in a non-magnetic drill collar, primarily using a rubber stabilizer to center the instrument and ensure accurate inclinometer data. However, during use, the rubber stabilizer is subjected to high temperatures, high pressures, erosion, and filling with solids in the mud, making it difficult to remove the stabilizer on site after it has been pulled out. Currently, there is no dedicated tool for removing the stabilizer on site. The only options are to reinsert the stabilizer, which visually shows less erosion, but this can easily cause instrument failure; or to strike it with hand tools such as hammers and cutters, which can damage other instrument components; or to return the entire instrument to a repair shop for disassembly, which reduces instrument utilization and increases maintenance costs. Utility Model Content

[0003] The present invention aims to address at least one of the aforementioned deficiencies in the prior art. For example, one objective of the present invention is to facilitate the quick and easy removal of damaged centralizers on-site, a second objective is to increase the utilization rate of on-site directional instruments, and a third objective is to reduce maintenance costs for directional instruments.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a disassembly device for a centralizer of an MWD directional instrument.

[0005] The MWD directional instrument centralizer disassembly device includes a device body, a snap mechanism, and a drive assembly, wherein the device body can fix the instrument body and includes two main body clamps and a plurality of first connection assemblies; wherein one side of the two main body clamps is hinged, and the other side can be connected via the first connection assembly; the snap mechanism can fix the centralizer and includes two centralizer clamps and a plurality of second connection assemblies; wherein one side of the two centralizer clamps is hinged, and the other side can be connected via the second connection assembly; the drive mechanism includes at least one set of drive assemblies, and the drive assembly can enable relative movement between the device body and the snap mechanism.

[0006] Optionally, the snap mechanism further comprises two arc slides respectively provided on the ends of the two centralizer clamping plates, and the device body can perform the relative movement along the two arc slides.

[0007] Optionally, the first connecting assembly and the second connecting assembly both include a first fixing block, a second fixing block and fixing bolts; wherein,

[0008] The first fixing block and the second fixing block of the first connecting assembly are separately fixed on the other side of the two main body clamping plates, and the fixing bolts can connect the first fixing block and the second fixing block;

[0009] The first fixing block and the second fixing block of the second connecting assembly are separately fixed on the other side of the two centralizer clamps, and the fixing bolts can connect the first fixing block and the second fixing block.

[0010] Optionally, the two main body clamps are both arc plates, and their inner arc surfaces face each other after the two main body clamps are connected; the two centralizer clamps are both arc plates, and their inner arc surfaces face each other after the two centralizer clamps are connected.

[0011] Optionally, the axial dimensions of the two main body clamps are greater than the axial dimensions of the two centralizer clamps.

[0012] Optionally, the driving assembly includes a hydraulic gun, a telescopic rod and a connecting block, wherein:

[0013] The hydraulic gun is arranged on the two main body clamps, the connecting block is arranged on the two centralizer clamps and corresponds to the position of the hydraulic gun, one end of the telescopic rod is fixedly connected to the connecting piece, and the other end is slidably connected to the hydraulic device.

[0014] Optionally, the hydraulic gun is provided with at least one oil filling port.

[0015] Optionally, the number of the driving assemblies is two groups, and the hydraulic guns of the two groups of driving assemblies are respectively arranged on the two main body clamping plates.

[0016] Optionally, an oil cylinder is installed inside the device body, and the oil cylinder is connected to the hydraulic gun through a pipeline.

[0017] Optionally, one side of the two main body clamps is provided with a plurality of hinges; one side of the two centralizer clamps is also provided with a plurality of hinges.

[0018] Compared with the prior art, the beneficial effects of the present invention include at least one of the following:

[0019] (1) The utility model can directly dismantle the damaged centralizer on site, which is efficient and convenient.

[0020] (2) The hydraulic gun connected to the utility model can push the telescopic rod forward when hydraulic oil is injected, and slowly separate the centralizer from the instrument to disassemble the centralizer, thereby reducing the malfunction of the centralizer.

[0021] (3) The utility model can improve the utilization rate of the directional instrument, and at the same time can timely discover the directional instrument failure and reduce the maintenance cost of the directional instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and other objects and / or features of the present invention will become more apparent from the following description in conjunction with the accompanying drawings, in which:

[0023] Figure 1 A schematic diagram showing one perspective of the overall structure of the utility model;

[0024] Figure 2 A schematic diagram showing another perspective of the overall structure of the utility model;

[0025] Figure 3 Shown Figure 1 A magnified view of middle A;

[0026] Figure 4 A schematic diagram showing another perspective of the overall structure of the utility model;

[0027] Figure 5 Shown Figure 4 Magnified view of B.

[0028] Description of main reference numerals:

[0029] 1. Main body clamp; 2. Centralizer clamp; 3. Hinge; 4. Slide plate; 5. Fixing block No. 1; 6. Fixing block No. 2; 7. Fixing bolt; 8. Hydraulic gun; 9. Connecting block; 10. Telescopic rod; 11. Oil filling port. DETAILED DESCRIPTION

[0030] Hereinafter, a MWD directional instrument centralizer disassembly device of the present invention will be described in detail with reference to exemplary embodiments.

[0031] It should be noted that terms such as "first," "second," "third," and "fourth" are used solely for ease of description and distinction and are not to be construed as indicating or implying relative importance. Terms such as "upper," "lower," "front," "back," "left," "right," "inner," and "outer" are used solely for ease of description and to establish relative orientations or positions, and are not to indicate or imply that the components referred to must have such a particular orientation or position.

[0032] Exemplary embodiments

[0033] This exemplary embodiment will describe the MWD directional instrument centralizer removal device with reference to the accompanying drawings.

[0034] Figure 1 、 Figure 2 and Figure 4 The overall structural schematic diagrams of the centralizer disassembly device at different viewing angles are shown respectively; Figure 3 Shown Figure 1 A magnified view of middle A; Figure 5Shown Figure 4 The enlarged view of B in the middle; Figures 1 to 5 To explain.

[0035] The device comprises a device body, a buckle mechanism and a driving assembly.

[0036] The main body of the device is equipped with an oil cylinder. The main body of the device includes two main body clamps 1 and two sets of first connection components. The main body clamps 1 are arc plates. The two main body clamps 1 are arranged symmetrically, as shown in FIG. Figure 2 As shown, a hinge 3 is fixedly connected between the two, and the two main body clips 1 can rotate around the hinge 3.

[0037] The snap-fit ​​mechanism consists of two centralizer clips 2 and a set of second connecting components. A slide 4, shaped like a circular arc, is fixedly attached to the upper side of the centralizer clips 2. The two centralizer clips 2 are symmetrically arranged, and hinges 3 are fixedly connected between them, enabling rotation. The slides 4 are connected to the main clip 1 in a sliding manner, and are provided in two sets, arranged symmetrically.

[0038] The first connecting component and the second connecting component have the same structure. Figure 1 As shown, there are three groups of connection components arranged vertically. Figure 3 As shown, the first connecting assembly includes a No. 1 fixing block 5 and a No. 2 fixing block 6 fixedly connected to the outside of the main body clamping plate 1. The inner sides of the No. 1 fixing block 5 and the No. 2 fixing block 6 are threadedly connected with fixing bolts 7. The distance between the No. 1 fixing block 5 and the No. 2 fixing block 6 can be adjusted by the fixing bolts 7. In other words, by rotating the fixing bolts 7 in the No. 1 fixing block 5 and the No. 2 fixing block 6, the tightness between the two main body clamping plates 1 of the device body and the tightness of the two stabilizer clamping plates 2 of the buckle mechanism can be adjusted, which can facilitate disassembly and fixation.

[0039] Drive components include Figure 5 The hydraulic gun 8, connecting block 9 and telescopic rod 10 are shown. The hydraulic gun 8 is fixedly connected to the outside of the main body card plate 1, the connecting block 9 is fixedly connected to the outside of the centralizer card plate 2, and the telescopic rod 10 is fixedly connected to the upper side of the connecting block 9. The outside of the hydraulic gun 8 is fixedly connected to the oil filling port 11, and the hydraulic gun 8 can add hydraulic oil from the oil filling port 11 through the pipeline into the oil cylinder of the main body card plate 1. Figure 4 As shown, the hydraulic guns 8 and connecting blocks 9 are arranged symmetrically in two groups, with the connecting blocks 9 corresponding to the positions of the hydraulic guns 8. The telescopic rod 10 is connected to the hydraulic guns 8 by a sliding connection, and the oil filling ports 11 are arranged in two groups vertically, through which hydraulic oil can be injected into the hydraulic guns 8.

[0040] In order to better understand the above exemplary embodiments, the working principle of the MWD directional instrument centralizer removal device is further described below.

[0041] First, place the directional instrument flat on the bracket, fix the main body clamping plate 1 and the centralizer clamping plate 2 on the corresponding positions of the instrument body and the centralizer end respectively, clamp them flat and tight, fill the hydraulic gun 8 with hydraulic oil through the oil filling port 11, close the pressure relief valve on the hydraulic gun 8, hold the connecting block 9 by hand, and visually observe the tool when manually pressurizing. After the tool is pressurized, closely observe the working condition of the tool. After the centralizer is pushed out of the instrument body, open the pressure relief valve of the hydraulic gun 8, remove the tool from the instrument body, and manually press the hydraulic oil back into the hydraulic tank. The tool must be handled with care during use, and pay attention to protecting the oil filling port and oil pipeline. After use, the pressure of the tool must be released immediately by hand. After removing the tool, the hydraulic oil must be manually pressed back into the tank. The tool must be cleaned immediately after use, and anti-rust oil is applied to the threads. After work is completed, the site is clean.

[0042] Although the present invention has been described above with reference to the exemplary embodiments and the accompanying drawings, it should be apparent to those skilled in the art that various modifications may be made to the above embodiments without departing from the spirit and scope of the claims.

Claims

1. A MWD directional instrument centralizer disassembly device, characterized in that: The device comprises a device body, a buckle mechanism and a drive assembly, wherein: The device body can fix the instrument body and includes two main body clamps and a plurality of first connection components; wherein one side of the two main body clamps is hinged and the other side can be connected by the first connection components; The snap mechanism can fix the centralizer and includes two centralizer clamps and a plurality of second connection components; wherein one side of the two centralizer clamps is hinged and the other side can be connected by the second connection component; The driving mechanism includes at least one set of driving components, and the driving components can enable relative movement between the device body and the buckle mechanism.

2. The MWD directional instrument centralizer disassembly device according to claim 1, characterized in that: The buckle mechanism further comprises two slides respectively arranged on the ends of the two centralizer clamping plates, and the device body can perform the relative movement along the two arc slides.

3. The MWD directional instrument centralizer disassembly device according to claim 1, characterized in that: The first connecting assembly and the second connecting assembly both include a first fixing block, a second fixing block and fixing bolts; wherein, The first fixing block and the second fixing block of the first connecting assembly are separately fixed on the other side of the two main body clamping plates, and the fixing bolts can connect the first fixing block and the second fixing block; The first fixing block and the second fixing block of the second connecting assembly are separately fixed on the other side of the two centralizer clamps, and the fixing bolts can connect the first fixing block and the second fixing block.

4. The MWD directional instrument centralizer disassembly device according to claim 1, characterized in that: The two main body clamps are both arc plates, and their inner arc surfaces face each other after the two main body clamps are connected; the two centralizer clamps are both arc plates, and their inner arc surfaces face each other after the two centralizer clamps are connected.

5. The MWD directional instrument centralizer disassembly device according to claim 4, characterized in that: The axial dimensions of the two main body clamps are greater than the axial dimensions of the two centralizer clamps.

6. The MWD directional instrument centralizer disassembly device according to claim 1, characterized in that: The driving assembly includes a hydraulic gun, a telescopic rod and a connecting block, wherein: The hydraulic gun is arranged on the two main body clamps, the connecting block is arranged on the two centralizer clamps and corresponds to the position of the hydraulic gun, one end of the telescopic rod is fixedly connected to the connecting piece, and the other end is slidably connected to the hydraulic device.

7. The MWD directional instrument centralizer disassembly device according to claim 6, characterized in that: The hydraulic gun is provided with at least one oil filling port.

8. The MWD directional instrument centralizer disassembly device according to claim 6, characterized in that: There are two groups of driving assemblies, and the hydraulic guns of the two groups of driving assemblies are respectively arranged on the two main body clamping plates.

9. The MWD directional instrument centralizer disassembly device according to claim 6, characterized in that: An oil cylinder is installed inside the device body, and the oil cylinder is connected to the hydraulic gun through a pipeline.

10. The MWD directional instrument centralizer disassembly device according to claim 1, characterized in that: One side of the two main body clamps is provided with a plurality of hinges; one side of the two centralizer clamps is also provided with a plurality of hinges.

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