Underground controllable release nipple based on RFID

Abstract

The utility model provides an underground controllable release nipple based on RFID (Radio Frequency Identification), which is applied to the technical field of oil and gas drilling engineering. The short section comprises an RFID ball, a control assembly, a miniature measurer and a release assembly. The RFID ball is used for writing operation instructions. The control assembly is used for reading an operation instruction in the RFID ball, and the control assembly drives the release assembly to rotate according to the instruction in the RFID ball; the micro measurer is arranged in the release assembly; when the RFID ball is thrown into the control assembly, the control assembly drives the release assembly to rotate according to an operation instruction of the RFID ball, the release assembly rotates to drive the micro measurer to rotate so that the micro measurer can be aligned with an outlet of the release assembly, and the micro measurer is released by the release assembly. The underground multi-time controllable release short section can be in seamless butt joint with a field drill rod, and then quick on-demand release of an underground miniature measurer is achieved.

Description

Technical Field

[0001] The utility model belongs to the field of oil and gas drilling engineering, and particularly relates to an underground controllable release pup joint based on RFID. Background Art

[0002] As exploration and development continue to advance into deep formations, complex underground conditions such as complex phase changes in the wellbore, narrow safety density windows, and poor wellbore stability have brought a series of difficulties and challenges to drilling safety. Efficient and accurate monitoring of key parameters of the wellbore flow field, such as temperature and pressure, is the basis for complex judgment and control in the wellbore. The existing downhole parameter measurement technology while drilling is relatively expensive and can only measure the parameters of the instrument installation position, and cannot dynamically monitor the temperature and pressure profile of the entire wellbore. The data transmission efficiency based on mud pulses is low and cannot meet the needs of the field for a large amount of real data; and the storage-based data recording method can only be obtained when drilling, and the data timeliness is insufficient.

[0003] Therefore, the prior art has the following problems:

[0004] It is impossible to achieve multiple controllable release of the micro-meter. The micro-meter is a new technology. Please refer to the application number 202310025791.2 for a miniaturized downhole temperature and pressure measuring device resistant to ultra-high temperature and ultra-high pressure. The device does not have a corresponding multiple release system.

[0005] It is not possible to quickly release the micrometer to read the monitoring data within a reasonable time according to the test requirements. Utility Model Content

[0006] The present application aims to solve at least one of the technical problems in the related art to a certain extent. The embodiment of the utility model provides a downhole controllable release pup joint based on RFID, and controls the release pup joint to open the storage bin and release the micro-meter by dropping an RFID ball when measurement is required. After the micro-meter enters the annulus, it is returned to the surface with the drilling fluid for recovery. The measuring device continuously measures and records the annulus temperature, pressure and other parameters along the way, and recovers and reads the data on the ground, so as to achieve the purpose of monitoring the dynamic environmental parameters of the downhole. The specific scheme is as follows:

[0007] An underground controlled release pup joint based on RFID, comprising:

[0008] An RFID ball, in which an operation instruction is written;

[0009] A control component, the control component is used to read the operation instructions in the RFID ball, and the control component drives the release component to rotate according to the instructions in the RFID ball;

[0010] a micrometer disposed within the release assembly;

[0011] When the RFID ball is put into the control component, the control component drives the release component to rotate according to the operation instruction of the RFID ball, and the rotation of the release component drives the micro-meter to rotate so that the micro-meter is aligned with the outlet of the release component, and the micro-meter is released by the release component;

[0012] The release assembly includes a driven module and an active module, wherein the driven module includes: a driven end upper end cover, a driven end bearing, a boss, a driven end lower end cover and a driven end load compartment,

[0013] When the slave module is greater than 1, from the entrance end of the RFID ball to the output end of the RFID ball, the lower end cover of the nth slave end is threadedly connected with the upper cover of the n+1th slave end, and the nth slave end driving block is abutted with the n+1th boss, n≥1.

[0014] Optionally, the control component includes:

[0015] An upper transfer threaded barrel, one end of which is externally threaded, and the other end of which is provided with external threads and internal threads;

[0016] A control end housing, the control end housing is cylindrical, both ends of the control end housing are respectively provided with internal threads, and one end of the control end housing is connected to the external thread of one end of the upper transfer threaded barrel;

[0017] A buffer, the buffer is installed inside the upper transfer threaded barrel and away from one end of the control end housing;

[0018] A central body, which is cylindrical and installed in the control end housing, one end of which is connected to the internal thread of the upper transfer threaded barrel, and an annular space is formed between the outer wall of the central body and the housing;

[0019] A loop antenna, the loop antenna being installed in the inner cavity of the central body and the loop antenna being coaxially arranged with the central body;

[0020] A reduction motor and an industrial computer, wherein the reduction motor and the industrial computer are installed in the annular space;

[0021] A driving gear, wherein the output end of the reduction motor is provided with a driving gear;

[0022] When the RFID ball passes through the ring antenna, the ring antenna reads the operation instruction and sends the operation instruction to the industrial computer. The industrial computer controls the reduction motor to work according to the operation instruction, and the reduction motor drives the driving gear to rotate, thereby driving the release component to rotate.

[0023] Optionally, in the direction from the RFID ball entry end to the RFID ball output end, the aperture of the inlet end of the upper transfer threaded barrel is smaller than the aperture of the outlet end of the upper transfer threaded barrel, and circular ring platforms are circumferentially arranged on the outer side wall of the upper transfer threaded barrel and the inner side wall of the upper transfer threaded barrel;

[0024] Wherein, when the control end housing and the upper transfer threaded barrel are connected, the end of the control end housing abuts against the circular ring platform of the outer wall of the upper transfer threaded barrel;

[0025] Wherein, when the central body and the upper transfer threaded barrel are connected, the end of the central body abuts against the circular ring platform on the inner wall of the upper transfer threaded barrel.

[0026] Optionally, the buffer is two cylinders coaxially arranged and integrally arranged;

[0027] From the RFID ball entrance end to the RFID ball exit end, the outer diameter of the column at the entrance end of the buffer is greater than the outer diameter of the column at the exit end of the buffer, the inner diameter of the buffer gradually decreases from the entrance end to the exit end, and the inner wall of the buffer is arranged in an inclined surface;

[0028] The lower bottom surface of the cylinder at the inlet end of the buffer abuts against the upper surface of the circular ring platform of the outer wall of the upper transfer threaded cylinder;

[0029] When the RFID ball enters the buffer, the inner wall of the buffer guides the RFID ball into the inner cavity of the central body;

[0030] The inner cavity of the buffer is coaxially arranged with the inner cavity of the central body

[0031] A control end sealing ring is arranged between the central body and the upper transfer threaded cylinder.

[0032] Optionally, the control component drives the active module to rotate so that the active module releases the micro-meter in the active module;

[0033] The active module drives the driven module to rotate so that the driven module releases the micro-meter inside the driven module.

[0034] Optionally, the active module includes: a driven gear, an active end upper end cover, an active end lower end cover, an active end bearing, and an active end load compartment;

[0035] The active end upper end cover is arranged in a cylindrical shape, and the active end upper end cover is threadedly connected to the control end housing;

[0036] The active end lower end cover is threadedly connected to the active end upper end cover, and the active end lower end cover is coaxially arranged with the active end upper end cover;

[0037] The active end load chamber is installed in the cavity of the active end upper end cover and the cavity of the active end lower end cover respectively through two active end bearings, and the active end load chamber is coaxially arranged with the active end upper end cover, wherein the active end load chamber is a columnar arrangement, and a plurality of storage grooves are evenly arranged on the side wall of the active end load chamber, and each storage groove supports and accommodates a micro-meter, wherein a sealing plate is arranged at the open end of one of the storage grooves, and the sealing plate blocks the corresponding storage groove, and the micro-meter supports installation in the storage groove without the sealing plate;

[0038] A delivery port is provided on the side wall of the upper end cover of the active end, and the position of the delivery port corresponds to the position of the storage slot;

[0039] The driven gear is fixed to the end surface of the driving end load compartment, and the driven gear is meshed with the driving gear;

[0040] When the driving gear rotates, the driven gear drives the active end load compartment to rotate, and the storage grooves arranged around the active end load compartment pass through the delivery port in sequence. When the opening of any storage groove without a sealing plate coincides with the delivery port, the corresponding micro-measuring device is supported to be moved out to the target position through the delivery port.

[0041] Optionally, the active module further comprises: an active end driving block, wherein the active end driving block is mounted at the bottom of the active end load compartment;

[0042] One end of the driven end upper end cover is threadedly connected to one end of the active end lower end cover away from the active end upper end cover, one end of the driven end upper end cover away from the active end lower end cover is threadedly connected to the driven end lower end cover, and a delivery port is provided on the side wall of the driven end upper end cover;

[0043] The structure of the driven end load compartment is the same as that of the driving end load compartment. The driven end load compartment is installed in a cavity formed by the driven end upper end cover and the driven end lower end cover through the two driven end bearings. When the driven end load compartment rotates, the driven end upper end cover and the driven end lower end cover remain stationary.

[0044] The boss is mounted on the top of the driven end load compartment, and the side wall of the active end driving block abuts against the side wall of the boss;

[0045] When the active end load compartment rotates, the active end drive block drives the driven end load compartment to rotate through the boss;

[0046] When the driven end load cabin rotates, the storage slots of the driven end load cabin pass through the delivery port in sequence. When the opening of any storage slot without a sealing plate matches the delivery port, the corresponding micro-measuring device is supported to move out to the target position through the delivery port.

[0047] Optionally, the active module further comprises: two active end sealing rings and two active end retaining rings;

[0048] Wherein, one of the active end sealing sleeves is on the outer wall of the active end load compartment and is arranged between the active end load compartment and the active end upper end cover, and the other active end sealing sleeve is on the outer wall of the active end load compartment and is arranged between the active end load compartment and the active end lower end cover;

[0049] Among them, one of the active end retaining rings is nested on the outer wall of the active end load compartment and contacts the active end bearing in the active end upper end cover, and the other active end retaining ring is nested on the outer wall of the active end load compartment and contacts the active end bearing in the active end lower end cover;

[0050] The driven module further comprises: two driven end sealing rings and two driven end retaining rings;

[0051] Wherein, one driven end sealing sleeve is on the outer wall of the driven end load compartment and is arranged between the driven end load compartment and the driven end upper end cover, and another driven end sealing ring is sleeved on the outer wall of the driven end load compartment and is arranged between the driven end load compartment and the driven end lower end cover;

[0052] Among them, one of the driven end retaining rings is nested on the outer wall of the driven end load compartment and contacts the driven end bearing in the driven end upper end cover, and the other driven end retaining ring is nested on the outer wall of the driven end load compartment and contacts the driven end bearing in the driven end lower end cover.

[0053] Optionally, the release assembly further comprises a lower transfer threaded barrel;

[0054] The lower transfer threaded barrel is installed at one end of the driven end lower end cover away from the driven end upper end cover, the lower transfer threaded barrel is threadedly connected to the driven end upper end cover, the lower transfer threaded barrel is coaxially arranged with the driven end lower end cover, the lower transfer threaded barrel is cylindrically arranged, and one end of the lower transfer threaded barrel away from the driven end lower end cover is provided with an internal thread;

[0055] The driven end module also includes a driven end driving block, and the driven end driving end is installed at the bottom of the driven end load compartment.

[0056] The beneficial effects brought by the technical solution provided by the embodiment of the utility model include at least:

[0057] This short section can store the micro-meter in a multi-time controllable release short section. The short section is connected to the drill string system and close to the drill bit. Then, when measurement is needed, the RFID ball is dropped to control the release of the short section to open the storage bin and release the micro-meter. After the micro-meter enters the annulus, it is returned to the surface with the drilling fluid for recovery. The measuring device continuously measures and records the annulus temperature, pressure and other parameters along the way, and the data is recovered and read on the ground, so as to achieve the purpose of monitoring the dynamic environmental parameters downhole. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0059] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0060] Figure 2 It is a schematic diagram of the storage slot where the miniature measuring device of the utility model is located being turned to the delivery port;

[0061] Figure 3 It is a cross-sectional schematic diagram of a control assembly of an embodiment of the utility model;

[0062] Figure 4 An exploded view of a control assembly according to an embodiment of the utility model from a first perspective;

[0063] Figure 5 An exploded view of the control assembly of an embodiment of the utility model from a second perspective;

[0064] Figure 6 It is a cross-sectional schematic diagram of an active module according to an embodiment of the utility model;

[0065] Figure 7 This is an exploded view of the active module of an embodiment of the utility model from a first perspective;

[0066] Figure 8 An exploded view of the active module of an embodiment of the utility model from a second perspective;

[0067] Fig. 9 It is a cross-sectional schematic diagram of a passive module of an embodiment of the utility model;

[0068] Fig.10 This is an exploded view from a first perspective of a passive module according to an embodiment of the utility model;

[0069] Fig.11 This is an exploded view from a second perspective of the passive module of an embodiment of the utility model.

[0070] Reference numerals:

[0071] 1. RFID ball; 2. Control assembly; 21. Upper transfer threaded barrel; 22. Control end housing; 23. Buffer; 24. Center body; 25. Ring antenna; 26. Gear motor; 27. Industrial computer; 28. Driving gear; 29. ​​Control end sealing ring; 3. Micrometer; 4. Release assembly; 41. Active module; 411. Driven gear; 412. Active end upper cover; 413; Active end lower cover; 414. Active end bearing; 415. Active End load compartment; 4151, storage groove; 4152, sealing plate; 416 active end drive block; 417; active end sealing ring; 418, active end retaining ring; 42, driven module; 421, driven end upper end cover; 422, driven end bearing; 423, boss; 424, driven end lower end cover; 425, driven end load compartment; 426, driven end sealing ring; 427, driven end retaining ring; 428, driven end drive block; 43, delivery port; 5, lower transfer threaded cylinder. DETAILED DESCRIPTION

[0072] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0073] Unless otherwise defined, the technical or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar terms used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one", "an" or "the" do not indicate a quantity limitation, but indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and similar terms are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0074] It should be noted that the terms "up", "down", "left", "right", "front", "back", etc. used in the present invention are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0075] like Figure 10 to Figure 11 As shown, an RFID-based downhole controllable release short section includes: an RFID ball 1, a control component 2, a micrometer 3 and a release component 4, wherein the RFID ball 1 is used to write operating instructions; the control component 2 is used to read the operating instructions in the RFID ball 1, and the control component 2 drives the release component 4 to rotate according to the instructions in the RFID ball 1; the micrometer is arranged in the release component 4; when the RFID ball 1 is put into the control component 2, the control component 2 drives the release component 4 to rotate according to the operating instructions of the RFID ball 1, and the rotation of the release component 4 drives the micrometer 3 to rotate so that the micrometer 3 is aligned with the outlet of the release component 4, and the micrometer 3 is released by the release component 4.

[0076] Among them, the RFID ball 1 is the existing technology. The RFID ball 1 is placed by an external operator and contains operation instructions written by the operator. The operation instructions are set according to needs. The relevant technology of the RFID ball 1 containing the operation instructions is the existing technology.

[0077] In a specific implementation manner, the control component 2 includes:

[0078] The upper transfer threaded barrel 21 has an external thread at one end, and an external thread and an internal thread are arranged at the other end of the upper transfer threaded barrel 21. The upper transfer threaded barrel 21 is a cylindrical structure as a whole, and a cavity is arranged in the middle. Both ends of the upper transfer threaded barrel 21 are arranged with threads, which can be external threads or internal threads. Both the external threads and the internal threads can be set according to needs, and the connection structures at both ends can be connected to the upper transfer threaded barrel 21. In addition, one end of the upper transfer threaded barrel 21 is the input end of the RFID ball 1. The specific component to which the thread of the entry end is connected can be set according to the use requirements of technicians in this field, or it can be not connected to any component, and this embodiment does not limit it.

[0079] The control end shell 22 is cylindrical in shape, and internal threads are respectively arranged at both ends of the control end shell 22. One end of the control end shell 22 is connected to the external thread of one end of the upper transfer threaded barrel 21, and the RFID ball 1 entry end of the control end shell 22 is threadedly connected to the RFID ball 1 output end of the upper transfer threaded barrel 21. This embodiment does not limit the threads at both ends of the control shell, as long as the control end shell 22 can be threadedly connected to the parts that need to be connected at both ends, the function of the control end shell 22 is to install components such as the center body 24 inside, and it does not have a control function itself.

[0080] The buffer 23 is installed inside the upper transfer threaded barrel 21 and away from one end of the control end housing 22. The buffer 23 is composed of two coaxially arranged cylinders and is integrally arranged. From the entrance end of the RFID ball 1 to the output end of the RFID ball 1, the outer diameter of the cylinder at the inlet end of the buffer 23 is greater than the outer diameter of the cylinder at the outlet end of the buffer 23. The inner diameter of the buffer 23 gradually decreases from the inlet end to the outlet end, and the inner wall of the buffer 23 is inclined. The lower bottom surface of the cylinder at the inlet end of the buffer 23 abuts against the upper surface of the circular ring stage of the outer wall of the upper transfer threaded barrel 21. When the RFID ball 1 enters the buffer 23, the inner wall of the buffer 23 guides the RFID ball 1 into the inner cavity of the central body 24. The inner cavity of the buffer 23 is coaxially arranged with the inner cavity of the central body 24. A control end sealing ring 29 is arranged between the central body 24 and the upper transfer threaded barrel 21.

[0081] The center body 24 is cylindrical and installed in the control end housing 22. One end of the center body 24 is connected to the internal thread of the upper transfer threaded barrel 21, and an annular space is formed between the outer wall of the center body 24 and the housing.

[0082] A loop antenna 25, wherein the loop antenna 25 is installed in the inner cavity of the central body 24 and the loop antenna 25 is coaxially arranged with the central body 24;

[0083] A reduction motor 26 and an industrial computer 27, wherein the reduction motor 26 and the industrial computer 27 are installed in the annular space;

[0084] A driving gear 28, a driving gear 28 is provided at the output end of the reduction motor 26;

[0085] When the RFID ball 1 passes through the loop antenna 25, the loop antenna 25 reads the operation instruction and sends the operation instruction to the industrial computer 27. The industrial computer 27 controls the reduction motor 26 to work according to the operation instruction, and the reduction motor 26 drives the driving gear 28 to rotate, thereby driving the release component 4 to rotate.

[0086] From the entrance end of the RFID ball 1 to the output end of the RFID ball 1, the aperture of the inlet end of the upper transfer threaded barrel 21 is smaller than the aperture of the outlet end of the upper transfer threaded barrel 21, and circular ring platforms are respectively arranged on the outer side wall of the upper transfer threaded barrel 21 and the inner side wall of the upper transfer threaded barrel 21;

[0087] When the control end housing 22 is connected to the upper transfer threaded barrel 21, the end of the control end housing 22 abuts against the circular ring platform of the outer wall of the upper transfer threaded barrel 21;

[0088] When the central body 24 is connected to the upper transfer threaded barrel 21 , the end of the central body 24 abuts against the circular ring platform on the inner wall of the upper transfer threaded barrel 21 .

[0089] In a specific implementation manner, the release assembly 4 includes:

[0090] The release component 4 includes an active module 41 and a driven module 42; the control component 2 drives the active module 41 to rotate so that the active module 41 releases the micro-meter 3 in the active module 41; the active module 41 drives the driven module 42 to rotate so that the driven module 42 releases the micro-meter 3 in the driven module 42.

[0091] The active module 41 includes: a driven gear 411, an active end upper end cover 412, an active end lower end cover 413, an active end bearing 414, and an active end load compartment 415;

[0092] The active end upper end cover 412 is provided in a cylindrical shape, and the active end upper end cover 412 is threadedly connected to the control end housing 22;

[0093] The active end lower end cover 413 is threadedly connected with the active end upper end cover 412, and the active end lower end cover 413 and the active end upper end cover 412 are coaxially arranged;

[0094] The active end load chamber 415 is installed in the cavity of the active end upper end cover 412 and the cavity of the active end lower end cover 413 respectively through two active end bearings 414, and the active end load chamber 415 is coaxially arranged with the active end upper end cover 412, wherein the active end load chamber 415 is arranged as a column, and a plurality of storage grooves 4151 are evenly arranged on the side wall of the active end load chamber 415, and each of the storage grooves 4151 supports and accommodates a micro-meter 3, wherein a sealing plate 4152 is arranged at the open end of one of the storage grooves 4151, and the sealing plate 4152 blocks the corresponding storage groove 4151, and the micro-meter 3 supports installation in the storage groove 4151 without the sealing plate 4152;

[0095] A delivery port 43 is provided on the side wall of the active end upper cover 412, and the position of the delivery port 43 corresponds to the position of the storage slot 4151;

[0096] The driven gear 411 is fixed to the end surface of the driving end load compartment, and the driven gear 411 is meshed with the driving gear 28;

[0097] When the driving gear 28 rotates, the driven gear 411 drives the active end load compartment to rotate, and the storage grooves 4151 arranged around the active end load compartment 415 pass through the delivery port 43 in sequence. When the opening of any storage groove 4151 without a sealing plate 4152 coincides with the delivery port 43, the corresponding micro measuring device 3 is supported to be moved out to the target position through the delivery port 43.

[0098] The active module 41 further includes: an active end drive block 416, which is mounted at the bottom of the active end load compartment 415; the driven module 42 includes: a driven end upper end cover 421, a driven end bearing 422, a boss 423, a driven end lower end cover 424 and a driven end load compartment 425; one end of the driven end upper end cover 421 is threadedly connected to one end of the active end lower end cover 413 away from the active end upper end cover 412, and one end of the driven end upper end cover 421 away from the active end lower end cover 413 is threadedly connected to the driven end lower end cover 424, the A delivery port 43 is provided on the side wall of the upper end cover 421 of the driven end; the structure of the driven end load compartment 425 is the same as that of the active end load compartment 415, and the driven end load compartment 425 is installed in the cavity formed by the upper end cover 421 of the driven end and the lower end cover 424 of the driven end through the two driven end bearings 422. When the driven end load compartment 425 rotates, the upper end cover 421 of the driven end and the lower end cover 424 of the driven end remain stationary; the boss 423 is installed at the top end of the driven end load compartment 425, and the side wall of the active end drive block 416 abuts against the side wall of the boss 423.

[0099] When the active end load bay 415 rotates, the active end driving block 416 drives the driven end load bay 425 to rotate through the boss 423; when the driven end load bay 425 rotates, the storage slots 4151 of the driven end load bay 425 pass through the delivery port 43 in sequence, and when the opening of any storage slot 4151 without a sealing plate 4152 coincides with the delivery port 43, the corresponding micro measuring device 3 is supported to be moved out to the target position through the delivery port 43.

[0100] In a specific implementation manner, the active module 41 further includes: two active end sealing rings 417 and two active end retaining rings 418 .

[0101] One of the active end sealing sleeves is sleeved on the outer wall of the active end load chamber 415 and is disposed between the active end load chamber 415 and the active end upper end cover 412, and another active end sealing ring 417 is sleeved on the outer wall of the active end load chamber 415 and is disposed between the active end load chamber 415 and the active end lower end cover 413;

[0102] One of the active end retaining rings 418 is nested on the outer wall of the active end load compartment 415 and contacts the active end bearing 414 in the active end upper end cover 412, and the other active end retaining ring 418 is nested on the outer wall of the active end load compartment 415 and contacts the active end bearing 414 in the active end lower end cover 413;

[0103] The driven module 42 further includes: two driven end sealing rings 426 and two driven end retaining rings 427;

[0104] One driven end sealing sleeve is on the outer wall of the driven end load compartment 425 and is disposed between the driven end load compartment 425 and the driven end upper end cover 421, and another driven end sealing ring 426 is sleeved on the outer wall of the driven end load compartment 425 and is disposed between the driven end load compartment 425 and the driven end lower end cover 424;

[0105] One of the driven end retaining rings 427 is nested on the outer wall of the driven end load compartment 425 and contacts the driven end bearing 422 in the driven end upper end cover 421, and the other driven end retaining ring 427 is nested on the outer wall of the driven end load compartment 425 and contacts the driven end bearing 422 in the driven end lower end cover 424.

[0106] In a specific embodiment, the release assembly 4 further includes a lower transfer threaded barrel 5;

[0107] The lower transfer threaded barrel 5 is installed at one end of the driven end lower end cover 424 away from the driven end upper end cover 421, the lower transfer threaded barrel 5 is threadedly connected to the driven end upper end cover 421, the lower transfer threaded barrel 5 is coaxially arranged with the driven end lower end cover 424, the lower transfer threaded barrel 5 is cylindrically arranged, and the end of the lower transfer threaded barrel 5 away from the driven end lower end cover 424 is provided with an internal thread;

[0108] The driven end module further includes a driven end driving block 428 , and the driven end driving block is mounted at the bottom of the driven end load compartment 425 .

[0109] In a specific implementation manner, the number of the driven modules 42 is at least one. When the number of the driven modules 42 is greater than one, from the entrance end of the RFID ball 1 to the output end of the RFID ball 1, the driven end upper end cover 421 of the first driven module 42 is threadedly connected with the active end lower end cover 413, and the active end driving block 416 drives the driven end load chamber 425 of the first driven module 42 to rotate by driving the boss 423 of the first driven module 42. Then, the driven driving block of the first driven module 42 abuts against the boss 423 of the second driven module 42 and can drive the driven end load chamber 425 of the second driven end module to rotate through the corresponding boss 423. The second driven module 42 The upper end cover 421 of the driven end is threadedly connected to the lower end cover 424 of the driven end of the first driven module 42, that is, from the entrance end of the RFID ball 1 to the output end of the RFID ball 1, m driven modules 42 are arranged in sequence, the lower end cover of the nth driven end is threadedly connected to the upper end cover of the n+1th driven end, and the nth driven end driving block 428 is abutted against the n+1th boss 423. When the nth driven end driving block 428 rotates following the nth driven end load compartment 425, the abutment relationship between the nth driven end driving block 428 and the n+1th boss 423 drives the n+1th boss 423 to rotate at the same frequency and in the same direction, and the n+1th boss 423 drives the n+1th driven end load compartment 425 to rotate.

[0110] In addition, the active end load bay 415, the driven end load bay 425, the central body 24 and other cylindrical structures are coaxially arranged with a central cavity. When the RFID ball 1 enters the back to read the instruction, the RFID ball 1 eventually falls out of the body. Each time a new operation instruction needs to be input, a new RFID ball 1 is used. The cost of the RFID ball 1 itself is very low.

[0111] In addition, the driving instruction written into the RFID ball 1 can also be set to allow the active end load compartment 415 to rotate one circle or rotate an angle of the storage slot 4151, which can be set according to needs.

[0112] In addition, the loop antenna 25 is arranged in a threaded ring, the loop antenna 25 itself is a prior art, and the antenna reading the information in the RFID is a prior art. The antenna of the prior art is wound to form a loop antenna 25 with multiple threads, so that the RFID ball 1 can be read when passing through the loop antenna 25.

[0113] In addition, a battery can be arranged in the space inside the short section, such as the annular space, and the battery is electrically connected to the motor, the industrial computer 27 and the annular antenna 25. The battery is a prior art and will not be described in detail in this application.

[0114] In addition, the threads at both ends of the upper transfer threaded barrel 21 and the lower transfer threaded barrel 5 are respectively connected to the drill rod. The structure of the drill rod itself is screwed together section by section and carries male and female joints. This short section can be assembled with the drill rod through the upper transfer threaded barrel 21 and the lower transfer threaded barrel 5 as a section of the drill rod.

[0115] The specific principles of this embodiment are:

[0116] When it is necessary to release the downhole micro-meter 3204, an outsider writes the operation instruction into the RFID ball 1 through the RFID reader / writer, and then puts the RFID ball 1 into the short section. When the RFID ball 1 reaches the sensing area of ​​the ring antenna 25, the operation instruction is read, and the industrial computer 27 controls the reduction motor 26 to rotate as required, and the driving gear 28 rotates. Through the meshing between the driving gear 28 and the driven gear 411, the active end load cabin 415 completes a circumferential rotation, and then the active end drive block 416 rotates, from The moving end boss 4232 is in direct contact with the active end driving block 416. Under the contact force of the active end driving block 416, the driven end boss 423 rotates, thereby causing the driven end load compartment 425 to complete a circumferential rotation. The micro-meter 3 stored in the active end load compartment 415 and the driven end load compartment 425 reaches the release port of the active end upper end cover 412 and the release port of the driven end upper end cover 421, and the micro-meter 3 is separated from the active end load compartment 415 and the driven end load compartment 425, completing the release of the downhole micro-meter 3.

[0117] This section is driven by the following process:

[0118] S1, write the operation instruction into RFID ball 1;

[0119] S2, the RFID ball 1 is put into the entrance of the control component 2, the control component 2 reads the operation instruction in the RFID ball 1, and the control component 2 drives the release component 4 to rotate according to the instruction in the RFID ball 1;

[0120] The release component 4 rotates to drive the micrometer 3 to rotate so that the micrometer 3 is aligned with the delivery port 43 of the release component 4 , and the micrometer 3 is released by the release component 4 through the delivery port 43 to the outside of the RFID-based downhole controllable release nipple.

[0121] This short section can store the micro-meter 3 in a multi-time controllable release short section. The short section is connected to the drill string system and close to the drill bit. Then, the RFID ball is dropped to control the release of the short section to open the storage bin and release the micro-meter 3 when measurement is needed. After the micro-meter 3 enters the annulus, it is returned to the surface with the drilling fluid for recovery. The measuring device continuously measures and records the annulus temperature, pressure and other parameters along the way, and the data is recovered and read on the ground, so as to achieve the purpose of monitoring the dynamic environmental parameters downhole.

[0122] The following points need to be explained:

[0123] (1) The drawings of the embodiments of the present invention only relate to the structures related to the embodiments of the present invention, and other structures may refer to the conventional designs.

[0124] (2) For the sake of clarity, in the drawings used to describe the embodiments of the present invention, the thickness of the layers or regions is enlarged or reduced, that is, these drawings are not drawn according to the actual scale. It is understood that when an element such as a layer, film, region or substrate is referred to as being "on" or "under" another element, the element may be "directly" "on" or "under" the other element or there may be an intermediate element.

[0125] (3) In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0126] The above are only specific implementation methods of the present utility model, but the protection scope of the present utility model is not limited thereto. The protection scope of the present utility model shall be based on the protection scope of the claims.

Claims

1. An RFID-based downhole controllable release sub, characterized in that: include: An RFID ball, in which an operation instruction is written; A control component, the control component is used to read the operation instructions in the RFID ball, and the control component drives the release component to rotate according to the instructions in the RFID ball; a micrometer disposed within the release assembly; When the RFID ball is put into the control component, the control component drives the release component to rotate according to the operation instruction of the RFID ball, and the rotation of the release component drives the micro-meter to rotate so that the micro-meter is aligned with the outlet of the release component, and the micro-meter is released by the release component; The release assembly includes a driven module and an active module, wherein the driven module includes: a driven end upper end cover, a driven end bearing, a boss, a driven end lower end cover and a driven end load compartment, When the slave module is greater than 1, from the entrance end of the RFID ball to the output end of the RFID ball, the lower end cover of the nth slave end is threadedly connected with the upper cover of the n+1th slave end, and the nth slave end driving block is abutted with the n+1th boss, n≥1.

2. The RFID-based downhole controlled release sub according to claim 1, characterized in that: The control component comprises: An upper transfer threaded barrel, one end of which is externally threaded, and the other end of which is provided with external threads and internal threads; A control end housing, the control end housing is cylindrical, both ends of the control end housing are respectively provided with internal threads, and one end of the control end housing is connected to the external thread of one end of the upper transfer threaded barrel; A buffer, the buffer is installed inside the upper transfer threaded barrel and away from one end of the control end housing; A central body, which is cylindrical and installed in the control end housing, one end of which is connected to the internal thread of the upper transfer threaded barrel, and an annular space is formed between the outer wall of the central body and the housing; A loop antenna, the loop antenna being installed in the inner cavity of the central body and the loop antenna being coaxially arranged with the central body; A reduction motor and an industrial computer, wherein the reduction motor and the industrial computer are installed in the annular space; A driving gear, wherein the output end of the reduction motor is provided with a driving gear; When the RFID ball passes through the ring antenna, the ring antenna reads the operation instruction and sends the operation instruction to the industrial computer. The industrial computer controls the reduction motor to work according to the operation instruction, and the reduction motor drives the driving gear to rotate, thereby driving the release component to rotate.

3. The RFID-based downhole controlled release sub according to claim 2, characterized in that: From the RFID ball entry end to the RFID ball output end, the aperture of the inlet end of the upper transfer threaded barrel is smaller than the aperture of the outlet end of the upper transfer threaded barrel, and circular ring platforms are respectively arranged on the outer side wall of the upper transfer threaded barrel and the inner side wall of the upper transfer threaded barrel; Wherein, when the control end housing and the upper transfer threaded barrel are connected, the end of the control end housing abuts against the circular ring platform of the outer wall of the upper transfer threaded barrel; Wherein, when the central body and the upper transfer threaded barrel are connected, the end of the central body abuts against the circular ring platform on the inner wall of the upper transfer threaded barrel.

4. The RFID-based downhole controllable release sub according to claim 3, characterized in that: The buffer is composed of two cylinders that are coaxially arranged and integrally arranged; From the RFID ball entrance end to the RFID ball exit end, the outer diameter of the column at the entrance end of the buffer is greater than the outer diameter of the column at the exit end of the buffer, the inner diameter of the buffer gradually decreases from the entrance end to the exit end, and the inner wall of the buffer is arranged in an inclined surface; The lower bottom surface of the cylinder at the inlet end of the buffer abuts against the upper surface of the circular ring platform of the outer wall of the upper transfer threaded cylinder; When the RFID ball enters the buffer, the inner wall of the buffer guides the RFID ball into the inner cavity of the central body; The inner cavity of the buffer is coaxially arranged with the inner cavity of the central body A control end sealing ring is arranged between the central body and the upper transfer threaded cylinder.

5. The RFID-based downhole controlled release sub according to claim 2, characterized in that: The control component drives the active module to rotate so that the active module releases the micro-meter in the active module; The active module drives the driven module to rotate so that the driven module releases the micro-meter inside the driven module.

6. The RFID-based downhole controlled release sub according to claim 5, characterized in that: The active module includes: a driven gear, an active end upper end cover, an active end lower end cover, an active end bearing, and an active end load compartment; The active end upper end cover is arranged in a cylindrical shape, and the active end upper end cover is threadedly connected to the control end housing; The active end lower end cover is threadedly connected to the active end upper end cover, and the active end lower end cover is coaxially arranged with the active end upper end cover; The active end load chamber is installed in the cavity of the active end upper end cover and the cavity of the active end lower end cover respectively through two active end bearings, and the active end load chamber is coaxially arranged with the active end upper end cover, wherein the active end load chamber is a columnar arrangement, and a plurality of storage grooves are evenly arranged on the side wall of the active end load chamber, and each storage groove supports and accommodates a micro-meter, wherein a sealing plate is arranged at the open end of one of the storage grooves, and the sealing plate blocks the corresponding storage groove, and the micro-meter supports installation in the storage groove without the sealing plate; A delivery port is provided on the side wall of the upper end cover of the active end, and the position of the delivery port corresponds to the position of the storage slot; The driven gear is fixed to the end surface of the driving end load compartment, and the driven gear is meshed with the driving gear; When the driving gear rotates, the driven gear drives the active end load compartment to rotate, and the storage grooves arranged around the active end load compartment pass through the delivery port in sequence. When the opening of any storage groove without a sealing plate coincides with the delivery port, the corresponding micro-measuring device is supported to be moved out to the target position through the delivery port.

7. The RFID-based downhole controlled release sub according to claim 6, characterized in that: The active module further comprises: an active end drive block, the active end drive block being mounted at the bottom of the active end load compartment; One end of the driven end upper end cover is threadedly connected to one end of the active end lower end cover away from the active end upper end cover, one end of the driven end upper end cover away from the active end lower end cover is threadedly connected to the driven end lower end cover, and a delivery port is provided on the side wall of the driven end upper end cover; The structure of the driven end load compartment is the same as that of the driving end load compartment. The driven end load compartment is installed in a cavity formed by the driven end upper end cover and the driven end lower end cover through the two driven end bearings. When the driven end load compartment rotates, the driven end upper end cover and the driven end lower end cover remain stationary. The boss is mounted on the top of the driven end load compartment, and the side wall of the active end driving block abuts against the side wall of the boss; When the active end load compartment rotates, the active end drive block drives the driven end load compartment to rotate through the boss; When the driven end load cabin rotates, the storage slots of the driven end load cabin pass through the delivery port in sequence. When the opening of any storage slot without a sealing plate matches the delivery port, the corresponding micro-measuring device is supported to move out to the target position through the delivery port.

8. The RFID-based downhole controlled release sub according to claim 7, characterized in that: The active module also includes: two active end sealing rings and two active end retaining rings; Wherein, one of the active end sealing sleeves is on the outer wall of the active end load compartment and is arranged between the active end load compartment and the active end upper end cover, and the other active end sealing sleeve is on the outer wall of the active end load compartment and is arranged between the active end load compartment and the active end lower end cover; Among them, one of the active end retaining rings is nested on the outer wall of the active end load compartment and contacts the active end bearing in the active end upper end cover, and the other active end retaining ring is nested on the outer wall of the active end load compartment and contacts the active end bearing in the active end lower end cover; The driven module further comprises: two driven end sealing rings and two driven end retaining rings; Wherein, one driven end sealing sleeve is on the outer wall of the driven end load compartment and is arranged between the driven end load compartment and the driven end upper end cover, and another driven end sealing ring is sleeved on the outer wall of the driven end load compartment and is arranged between the driven end load compartment and the driven end lower end cover; Among them, one of the driven end retaining rings is nested on the outer wall of the driven end load compartment and contacts the driven end bearing in the driven end upper end cover, and the other driven end retaining ring is nested on the outer wall of the driven end load compartment and contacts the driven end bearing in the driven end lower end cover.

9. The RFID-based downhole controlled release sub according to claim 7, characterized in that: The release assembly also includes a lower transfer threaded barrel; The lower transfer threaded barrel is installed at one end of the driven end lower end cover away from the driven end upper end cover, the lower transfer threaded barrel is threadedly connected to the driven end upper end cover, the lower transfer threaded barrel is coaxially arranged with the driven end lower end cover, the lower transfer threaded barrel is cylindrically arranged, and one end of the lower transfer threaded barrel away from the driven end lower end cover is provided with an internal thread; The driven end module also includes a driven end driving block, and the driven end driving end is installed at the bottom of the driven end load compartment.

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