A device for measuring and mapping the well trajectory of a directional well

Abstract

The application discloses a kind of drilling directional well wellbore trajectory mapping equipment, comprising: frame body, four corners are provided with the roller assembly for facilitating its movement;Moving piece, slidingly disposed on the horizontal beam of the upper end of the frame body;Wellbore positioning member, slidingly connected to the moving piece by pulley assembly;Telescopic member, rotationally disposed at the lower end of the wellbore positioning member;Sand breaking member, connected to the telescopic member;And mapping member, disposed at the lower end of the sand breaking member.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of trajectory mapping, in particular to a drilling directional well wellbore trajectory mapping device. BACKGROUND

[0002] The drilling directional well wellbore mapping technology mainly collects data of various parameters such as depth, angle and shape of the well to be mapped. Most of the existing mapping devices are used for mapping new wells to determine whether the well trajectory is within the preset range, which is convenient for initial development. Old wells also have great utilization value. When the old wells (especially low-inclination old wells) are developed for the second time, more accurate data measurement is required compared with new wells. Moreover, due to long-term non-use, the inner wall of the old well will be affected by the internal humid air, and dust and sand will gradually accumulate to form sand blocks adhering to the inner wall, which will affect the mapping and cause irregular mapping trajectory.

[0003] Therefore, a drilling directional well wellbore trajectory mapping device is needed to solve the above technical problems. SUMMARY

[0004] To achieve the above purpose, the present application provides the following technical scheme: a drilling directional well wellbore trajectory mapping device, comprising:

[0005] A frame body is provided with a roller assembly for easy movement.

[0006] A moving part is slidingly arranged on the upper end horizontal beam of the frame body.

[0007] A well positioning part is slidingly connected to the moving part through a pulley assembly.

[0008] A telescopic part is rotatably arranged at the lower end of the well positioning part.

[0009] A sand breaking part is connected to the telescopic part.

[0010] A mapping part is arranged at the upper end of the sand breaking part.

[0011] Further, as a preferred embodiment, a downhole mechanism is arranged at the center of the well positioning part, which is a multi-section telescopic structure that can extend into the deep position of the well to be mapped.

[0012] Further, as a preferred embodiment, the telescopic part can control the distance between the sand breaking part and the mapping part to reach a position close to the inner wall of the wellbore according to the internal diameter control chip built-in, and the telescopic part can make this device applicable to wells with different inner diameters.

[0013] Further, as a preferred embodiment, the sand breaking part comprises:

[0014] A shell is connected to the telescopic member at one end and has a three-joint sliding shell connected at the other end;

[0015] A sand crushing column is slidingly connected to the through hole of the three-joint sliding shell;

[0016] A sliding sleeve is fixedly connected to the outer wall of the sand crushing column, and the sliding sleeve slidingly abuts the inner side of the upper support plate of the three-joint sliding shell;

[0017] An ejection spring is sleeved on the outer wall of the sand crushing column, and one end of the ejection spring is connected to the inner wall of the three-joint sliding shell, and the other end is connected to the sliding sleeve;

[0018] A base is fixedly arranged in the shell;

[0019] A central shaft is rotatably arranged on the base, and a conical block is rotatably sleeved on the outer wall of the central shaft, and the bottom of the conical block is in contact with the top of the base;

[0020] A rotating block is fixedly connected to the outer wall of the central shaft, and the bottom of the rotating block is in contact with the top of the conical block; and

[0021] A connecting rod is hingedly connected to the conical block at one end and to the sand crushing column at the other end.

[0022] Further, as a preferred, the conical block is further fixedly connected with a protruding column, the height of the protruding column is consistent with the thickness of the rotating block, and the protruding column only abuts the rotating block for 1 / 2 of the rotating time of the rotating block.

[0023] Further, as a preferred, the sand crushing column extends out of the three-joint sliding shell away from the connecting rod, and the sand crushing column is provided with a sand crushing tip at this end, and the hardness of the sand crushing tip is greater than that of the sand on the inner wall of the wellbore.

[0024] Further, as a preferred, the surveying member comprises:

[0025] A rotating rod is connected to the top end of the central shaft, and the rotating rod can synchronously rotate with the central shaft;

[0026] A rotating plate is fixedly arranged at the end of the rotating rod away from the central shaft; and

[0027] A MEMS surveying instrument is arranged at the left end of the rotating plate; and

[0028] An angle sensor is arranged at the right end of the rotating plate.

[0029] Compared with the prior art, the present application provides a drilling directional well wellbore trajectory surveying device, which has the following beneficial effects:

[0030] The application can be used for well profile surveying of low-inclination old wells, and can crush sand blocks on the well wall of the old well during the surveying process, so as to avoid irregular well profile surveying track and affect secondary development of the old well, and meanwhile, the MEMS surveying instrument and the angle sensor can synchronously perform full-range high-precision data surveying on the same horizontal plane at different depth positions, so as to improve the integrity and accuracy of the well profile surveying track and provide a convenient condition for secondary development. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of a drilling directional well well profile surveying device;

[0032] Figure 2 It is a structural schematic diagram of a well body positioning member of a drilling directional well well profile surveying device;

[0033] Figure 3 It is a sand crushing member state of a drilling directional well well profile surveying device Figure 1 ;

[0034] Figure 4 It is a sand crushing member state of a drilling directional well well profile surveying device Figure 2 ;

[0035] Figure 5 It is a structural schematic diagram of a three-head sliding shell of a drilling directional well well profile surveying device;

[0036] Figure 6 It is a surveying range schematic diagram of a MEMS surveying instrument and an angle sensor of a drilling directional well well profile surveying device;

[0037] In the figure: 1, frame body; 2, moving member; 3, well body positioning member; 31, pulley assembly; 32, downhole mechanism; 4, telescopic member; 5, sand crushing member; 51, shell; 52, three-head sliding shell; 521, support plate; 53, sand crushing column; 54, sliding sleeve; 55, ejection spring; 56, base; 57, central shaft; 58, conical block; 59, rotating block; 510, connecting rod; 511, protruding column; 512, sand crushing tip; 6, surveying member; 61, rotating rod; 62, rotating plate; 63, MEMS surveying instrument; 64, angle sensor. DETAILED DESCRIPTION

[0038] Referring to Figures 1-6 , the application provides a drilling directional well well profile surveying device, which comprises:

[0039] Frame body 1, four corners are provided with roller assemblies facilitating movement thereof;

[0040] Moving member 2, slidingly arranged on the upper end horizontal beam of the frame body 1;

[0041] A well body positioning member 3 is slidably connected to the moving member 2 through a pulley assembly 31;

[0042] A telescopic member 4 is rotatably arranged at the lower end of the well body positioning member 3;

[0043] A sand crushing member 5 is connected to the telescopic member 4; and

[0044] A surveying member 6 is arranged at the upper end of the sand crushing member 5.

[0045] Further, a downhole mechanism 32 is arranged at the central position of the well body positioning member 3, which is a multi-section telescopic structure and can extend into the deep position of the well to be surveyed.

[0046] In the embodiment, the old well to be surveyed can be accurately positioned by the sliding cooperation of the moving member 2 on the frame 1 and the well body positioning member 3 on the moving member 2. During the surveying process of the device, the downhole mechanism 32 will perform multi-section telescopic operation, thereby driving the telescopic member 4, the sand crushing member 5 and the surveying member 6 to descend from the well mouth position to the deep position of the old well to be surveyed and return.

[0047] It should be noted that the arrangement of the sand crushing member 5 below the surveying member 6 can first perform sand crushing on the old well to be surveyed and then perform surveying operation, and the sand crushing process will not interfere with the surveying member 6.

[0048] Further, the telescopic member 4 can control the distance between the sand crushing member 5 and the surveying member 6 to the position close to the inner wall of the well body according to the internal diameter control chip contained therein, so that the device can be applied to different old wells to be surveyed with different inner diameters.

[0049] It should be noted that before the device performs surveying work, the surveying personnel need to transmit the caliber data of the old well to be surveyed to the internal diameter control chip, and then the internal diameter control chip will control the telescopic member 4 to perform telescopic operation corresponding to the caliber size of the old well to be surveyed, so that the device can be applied to the old well to be surveyed.

[0050] Further, the sand crushing member 5 comprises:

[0051] A shell 51 is connected to the telescopic member 4 at one end and connected with a three-head sliding shell 52 at the other end;

[0052] A sand crushing column 53 is slidably connected to the through hole of the three-head sliding shell 52;

[0053] A sliding sleeve 54 is fixedly connected to the outer wall of the sand crushing column 53, and the sliding sleeve 54 slidably abuts against the inner side of the support plate 521 of the three-head sliding shell 52;

[0054] An ejector spring 55 is sleeved on the outer wall of the crushed sand column 53, and one end of the ejector spring 55 is connected to the inner wall of the three-headed sliding shell 52, and the other end is connected to the sliding sleeve 54.

[0055] The base 56 is fixedly disposed inside the housing 51;

[0056] A central shaft 57 is rotatably mounted on the base 56, and a conical block 58 is rotatably sleeved on its outer wall, with the bottom of the conical block 58 contacting the top of the base 56;

[0057] A pivot block 59 is fixedly connected to the outer wall of the central shaft 57, and the bottom of the pivot block 59 contacts the top of the conical block 58; and

[0058] The connecting rod 510 is hinged at one end to the conical block 58 and at the other end to the sand-crushing column 53.

[0059] Furthermore, a protruding post 511 is fixedly connected to the conical block 58. The height of the protruding post 511 is the same as the thickness of the rotating block 59, and the protruding post 511 only abuts against the rotating block 59 for the time the rotating block 59 rotates 1 / 2 revolution.

[0060] Furthermore, the end of the sand-breaking column 53 away from the connecting rod 510 extends out of the three-head sliding shell 52, and this end of the sand-breaking column 53 is provided with a sand-breaking tip 512, the hardness of which is greater than the hardness of the sand on the inner wall of the well.

[0061] In a preferred embodiment, the shift block 59 is the active component. When the device performs dynamic mapping (i.e., the downhole mechanism 32 retracts and descends), the shift block 59 rotates autonomously around the entire circle. During the rotation, it causes the protruding column 511 to rotate synchronously, thereby driving the conical block 58 to rotate. Through the action of the connecting rod 510, it drives the sand-crushing column 53 towards the center position of the old well section (e.g., ...). Figure 3 As shown, the column moves in the direction indicated. At this time, the ejector spring 55 begins to compress and store force. When the rotating block 59 drives the protruding column 511 to rotate to half its own circumference, the protruding column 511 will disengage from the rotating block 59. Immediately, the ejector spring 55 begins to release force instantaneously, causing the sand-crushing column 53 to move at a large instantaneous speed V. t To the location of the old well cut surface well wall (e.g.) Figure 3 When impacted at the direction shown, the sand-breaking tip 512 will forcefully strike the sand clumps adhering to the well wall and break them into pieces that fall to the bottom of the well. During the above process, the telescopic component 4 will also rotate autonomously around the entire circumference, thus achieving the breaking of sand clumps on the inner wall of the well body around the entire circumference.

[0062] Furthermore, the surveying component 6 includes:

[0063] a rotating rod 61 connected to the top end of the central shaft 57 and capable of rotating synchronously with the central shaft 57;

[0064] a rotating plate 62 fixedly arranged at the end of the rotating rod 61 away from the central shaft 57; and

[0065] a MEMS surveying instrument 63 arranged at the left end of the rotating plate 62; and

[0066] an angle sensor 64 arranged at the right end of the rotating plate 62.

[0067] It should be noted that before the dynamic surveying, the device needs to first perform static surveying (i.e. the downhole mechanism 32 is stationary) at a position slightly lower than the wellhead and record the data.

[0068] As a preferred embodiment, the rotating block 59 rotates a full circle while driving the rotating rod 61 to rotate synchronously through the central shaft 57, so as to realize the full-circle rotation of the rotating plate 62, which drives the MEMS surveying instrument 63 and the angle sensor 64 to also rotate a full circle. The MEMS surveying instrument 63 and the angle sensor 64 will record high-precision surveying data in all directions on different horizontal planes during the dynamic surveying descent (the surveying range of the MEMS surveying instrument 63 and the angle sensor 64 is shown by the dashed line in the middle of FIG. 1). Figure 6 Specifically, the MEMS surveying instrument 63 is internally provided with a capacitive plate that can move in two directions, and in the above-mentioned sand crushing operation, the device will be brought about a small amplitude oscillation, so that the MEMS surveying instrument 63 generates a radial motion trend, and the capacitive plate generates a capacitance C k to help generate a Coriolis force F k , and since the Coriolis force F k is proportional to the angular velocity ω k to be measured when the MEMS surveying instrument 63 rotates, the value of the angular velocity ω k to be measured in this horizontal plane can be calculated according to the capacitance C k data measured by the capacitive plate inside the MEMS surveying instrument 63, and the attitude angle and the depth of the wellbore at the corresponding horizontal plane position are obtained through high-precision multiple integration, and the real-time monitoring of the wellbore surveying points (inclination angle, high-side angle, azimuth angle) by the angle sensor 64, and finally the actual trajectory of the wellbore is obtained by fusing the static and dynamic surveying data through Kalman filtering.

[0069] In the implementation, first, the device carries out static mapping at a position slightly lower than the wellhead and records data, and then carries out dynamic mapping, the telescopic part 4 rotates a whole circle, the rotating block 59 rotates a whole circle, the conical block 58 and the connecting rod 510 drive the broken sand column 53 to move to the center of the old well section, then the convex column 511 is separated from the rotating block 59, the broken sand column 53 impacts the sand block to break the sand block and drop into the well bottom, at the same time, the MEMS mapper 63 and the angle sensor 64 carry out high-precision mapping and record different data, and finally determine the well trajectory.

[0070] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A drilling directional well bore trajectory surveying apparatus, characterized by: Include: Frame (1), four corners are provided with the roller assembly for easy to move; Moving parts (2), slidingly disposed on the frame (1) upper end horizontal beam; Well positioning member (3), slidingly connected to the moving member (2) through the pulley assembly (31); Telescopic member (4), rotatingly disposed on the lower end of the well positioning member (3); Sand crushing member (5), connected to the telescopic member (4); Surveying member (6), provided on the upper end of the sand crushing member (5); The sand crushing member (5) comprises: Housing (51), one end connected to the telescopic member (4), the other end connected with three head slide shell (52); Sand crushing column (53), slidingly connected to the through hole of the three head slide shell (52); Sleeve (54), fixedly connected to the outer wall of the sand crushing column (53), and the sleeve (54) and the inner side of the upper support plate (521) of the three head slide shell (52) slidingly abut; Ejection spring (55), sleeved on the outer wall of the sand crushing column (53), and one end of the ejection spring (55) is connected with the inner wall of the three head slide shell (52), and the other end is connected with the sleeve (54); Base (56), fixedly arranged in the housing (51); Center shaft (57), rotatingly arranged on the base (56), and the outer wall thereof is rotatably sleeved with a tapered block (58), and the bottom of the tapered block (58) is in contact with the top of the base (56); Dial block (59), fixedly connected to the outer wall of the center shaft (57), and the bottom of the dial block (59) is in contact with the top of the tapered block (58); Connecting rod (510), one end hinged to the tapered block (58), the other end hinged to the sand crushing column (53).

2. A borehole directional well path surveying apparatus according to claim 1, wherein: The lower well mechanism (32) is arranged at the center position of the well positioning member (3), and the lower well mechanism (32) is arranged in a multi-section telescopic structure, which extends into the deep position of the well to be surveyed.

3. A borehole directional well path surveying apparatus as claimed in claim 1, wherein: The telescopic member (4) controls the telescopic member (4) to drive the sand crushing member (5) and the surveying member (6) to reach a position close to the inner wall of the well according to the internal diameter control chip contained therein, so that the telescopic member (4) makes the device applicable to different internal diameter of the well to be surveyed.

4. A borehole trajectory surveying apparatus for directional drilling according to claim 1, wherein: The tapered block (58) is further fixedly connected with a protruding column (511), the height of the protruding column (511) is consistent with the thickness of the dial block (59), and the protruding column (511) only abuts against the dial block (59) for 1 / 2 rotation time of the dial block (59).

5. A borehole directional well path surveying apparatus as claimed in claim 1, wherein: The end of the sand crushing column (53) away from the connecting rod (510) extends out of the three head slide shell (52), and the sand crushing column (53) is provided with a sand crushing sharp head (512) at this end, and the hardness of the sand crushing sharp head (512) is greater than that of the sand on the inner wall of the well.

6. A borehole directional well path surveying apparatus as claimed in claim 1, wherein: The surveying member (6) comprises: Rotating rod (61), connected with the top end of the center shaft (57), and the rotating rod (61) rotates synchronously with the center shaft (57); Rotating plate (62), fixedly arranged on the end of the rotating rod (61) away from the center shaft (57); A MEMS plotter (63) is arranged at the left end of the rotating plate (62); An angle sensor (64) is arranged at the right end of the rotating plate (62).

Images