Downhole rapid deployment device for logging instrument

Abstract

The invention discloses an underground quick deployment device for a logging instrument. The technical problem that the logging instrument is difficult to quickly deploy in a highly-deviated well or a horizontal well is solved. The device comprises a guiding gun and a plurality of guiding flywheels, the guiding gun is installed at the bottom of the logging instrument, the guiding flywheels are installed on the guiding gun and the logging instrument, the guiding gun comprises an installation connector, an upper conversion connector, a rotating connector, a lower conversion connector and a guiding cone, and the installation connector is connected with the logging instrument through a quick-screwing nut. The rotary joint is rotationally connected with the upper conversion joint, the bottom of the rotary joint is arranged in an inclined manner, a tilting angle of 2-5 degrees is formed between the bottom of the rotary joint and the vertical direction, the top of the mounting joint, the top of the upper conversion joint and the top of the rotary joint are coaxial, the bottom of the rotary joint, the lower conversion joint and the guide cone are coaxial, and the guide cone is made of an elastic material. Rapid deployment of the logging instrument in a highly-deviated well or a horizontal well can be achieved, operation is easy and rapid, time and labor are saved, and logging operation timeliness is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of oil and gas well logging, and in particular relates to a downhole rapid deployment device for a logging instrument. Background Art

[0002] Well logging instruments are a general term for oil and gas well exploration and measurement equipment. Well logging instruments can be used to detect oil and gas wells to collect a variety of physical information in the underground environment, such as force, heat, and nuclear information. At present, the logging instrument is usually lowered to the target layer by its own gravity when it is lowered into the well.

[0003] However, for highly deviated wells or horizontal wells, due to the change in the direction of the wellbore, the logging instrument cannot be lowered to the target layer by its own gravity. It must be transported by continuous tubing or deployment devices such as downhole crawlers. The operation steps are complicated and require a large number of operators to work together, which not only affects the timeliness of the logging operation, but also increases the burden on the operators, and needs to be improved. Summary of the invention

[0004] In order to solve all or part of the above problems, the purpose of the present invention is to provide a rapid downhole deployment device for logging instruments, which can realize the rapid deployment of logging instruments in highly deviated wells or horizontal wells. The operation is simple, fast, time-saving and labor-saving, which can not only reduce the burden on staff, but also improve the timeliness of logging operations.

[0005] The present invention provides a downhole rapid deployment device for a well logging instrument, comprising a guide gun and a plurality of guide flywheels, wherein the guide gun is used to be installed at the bottom of the well logging instrument and used to accurately locate the wellbore, wherein one of the guide flywheels is installed on the guide gun, and the remaining guide flywheels are used to be installed on the well logging instrument respectively, so as to realize the straightening and guiding of the guide gun and the well logging instrument in the wellbore;

[0006] The guide gun comprises a mounting joint, an upper conversion joint, a rotating joint, a lower conversion joint and a guide cone which are connected in sequence from top to bottom. A quick-screw nut is provided on a threaded sleeve of the mounting joint, and the quick-screw nut is used to connect with a joint at the bottom of the logging instrument. The top of the guide flywheel installed on the guide gun is connected with the mounting joint, and the bottom is connected with the upper conversion joint.

[0007] The rotary joint is rotatably connected to the upper conversion joint. The bottom of the rotary joint is arranged in an inclined shape and has a tilting angle of 2°-5° with the vertical direction. The mounting joint, the upper conversion joint and the top of the rotary joint are coaxial. The bottom of the rotary joint, the lower conversion joint and the guide cone are coaxial. The guide cone is made of elastic material.

[0008] Optionally, the guide cone includes a rubber bottom cone and a cylindrical spring, the cylindrical spring is sleeved on the bottom of the lower conversion joint, and the rubber bottom cone is vulcanized and fixed to the bottom of the lower conversion joint and wraps the cylindrical spring.

[0009] Optionally, the bottom of the mounting joint is inserted into the upper conversion joint and threadedly connected to the upper conversion joint, the top of the rotary joint is inserted into the upper conversion joint and connected to the upper conversion joint through a first bearing assembly, and the top of the lower conversion joint is inserted into the rotary joint and threadedly connected to the rotary joint;

[0010] Anti-loosening gaskets are respectively arranged between the installation joint and the upper conversion joint, and between the rotary joint and the lower conversion joint; sealing rings are respectively arranged between the installation joint and the upper conversion joint, and between the rotary joint and the lower conversion joint.

[0011] Optionally, the first bearing assembly comprises:

[0012] A first oil-free bearing is rotatably sleeved on the rotary joint and closely matches with the inner side wall of the upper conversion joint;

[0013] A limiting pressure ring, which is sleeved on the rotary joint and abuts against the top of the first oil-free bearing;

[0014] A support sleeve, which is sleeved on the rotary joint and located above the limiting pressure ring;

[0015] A compression wave spring is sleeved on the rotary joint and is located between the limit pressure ring and the support sleeve, wherein the top of the compression wave spring abuts against the support sleeve and the bottom abuts against the limit pressure ring;

[0016] A compression nut, threadedly sleeved on the top of the rotary joint;

[0017] An anti-loosening washer is sleeved on the rotary joint and compressed between the clamping nut and the supporting sleeve.

[0018] Optionally, a silicone grease injection cavity is provided at the bottom of the mounting joint, the silicone grease injection cavity is connected to the interior of the upper conversion joint, and a silicone grease injection hole connected to the silicone grease injection cavity is provided on the side wall of the mounting joint, and a silicone grease injection plug is threadedly connected to the silicone grease injection hole.

[0019] Optionally, the guide gun further comprises a protective cap threadedly mounted on the top of the mounting joint, and a rubber O-ring is arranged between the protective cap and the mounting joint.

[0020] Optionally, the guide flywheel comprises:

[0021] A supporting sleeve, used for being sleeved on the upper conversion joint or the logging instrument;

[0022] There are two mounting rings, which are respectively fixed to the corresponding ends of the support sleeve, and each mounting ring is threadedly connected with a plurality of limit screws, and the limit screws are used to connect with the guide gun or the logging instrument to achieve the fixation of the mounting ring;

[0023] A rotating sleeve, which is rotatably mounted on the supporting sleeve;

[0024] A plurality of support seats are respectively arranged on the rotating sleeve, and the plurality of support seats are arranged at equal intervals along the circumference of the rotating sleeve;

[0025] There are multiple rotating columns, which are respectively arranged on the corresponding supporting seats, and the axis of the rotating column is perpendicular to the axis of the rotating sleeve;

[0026] There are multiple flywheel pieces, which are rotatably connected to the corresponding rotating columns respectively, and the surface of the flywheel piece is provided with a guide arch surface for contacting the inner wall of the wellbore.

[0027] Optionally, the mounting ring is threadedly sleeved on a corresponding end of the supporting sleeve, and an anti-recoil spring is provided between the mounting ring and the supporting sleeve.

[0028] Optionally, a support hole is provided through the middle of the flywheel plate, the rotating column passes through the support hole, and is rotatably matched with the flywheel plate through a second bearing assembly, a flywheel bushing is tightly inserted into the support hole, a limit key is provided on the side wall of the flywheel bushing, and a limit groove for inserting the limit key is provided on the flywheel plate;

[0029] The flywheel plate is threadedly connected with a plurality of locking top screws, and the locking top screws are used to press against the top screw holes on the side wall of the flywheel bushing. The guide arch surface is provided with a plurality of make way grooves, the number of the make way grooves is at least the same as the number of the locking top screws, and each of the locking top screws is separately located in the corresponding make way groove.

[0030] Optionally, the second bearing assembly comprises:

[0031] A second oil-free bearing is sleeved on the rotating column and closely matches the inner wall of the supporting hole;

[0032] A first thrust washer, sleeved on the rotating column and abutting against the second oil-free bearing;

[0033] A compression nut, which is threadedly sleeved on the rotating column and compresses the thrust washer;

[0034] A bearing retaining ring is clamped on the rotating column and abuts against the clamping nut to prevent the clamping nut from retreating;

[0035] The second thrust washer is arranged between the flywheel plate and the support seat.

[0036] Optionally, a silicone grease injection channel is provided at the end of the rotating column, and a plurality of filling channels are provided on the side wall of the rotating column, one end of the plurality of filling channels are respectively connected to the silicone grease injection channel, and the other end is respectively aligned with the second oil-free bearing, and a filling hole connected to the silicone grease injection channel is provided through the flywheel bushing, and a filling plug is threadedly connected to the filling hole.

[0037] It can be seen from the above technical solutions that the downhole rapid deployment device for well logging instruments provided by the present invention has the following advantages:

[0038] The device can realize the rapid deployment of logging instruments in highly deviated wells or horizontal wells. That is, when the direction of the wellbore changes, the rubber bottom cone at the bottom of the guide gun will touch the wellbore wall, realizing the rebound and toggling effect, thereby accurately finding the subsequent wellbore position and helping the logging instrument to enter the wellbore smoothly. At the same time, by setting the guide flywheel, the self-rotation of the flywheel can reduce friction, and the revolution can improve the "obstacle crossing" ability, help the logging instrument to be lowered smoothly, improve the passability of the logging instrument, and thus improve the safety of the operation. Not only that, the device can be directly installed on the logging instrument, without the help of continuous tubing or downhole crawler to realize the lowering of the logging instrument. The operation is simple, fast, time-saving and labor-saving, which can not only reduce the workload of operators, but also improve the timeliness of logging operations.

[0039] Other features and advantages of the present invention will be set forth in the description which follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the technical solution of the present invention and do not constitute a limitation on the technical solution of the present invention.

[0041] Figure 1 This is a schematic diagram of the use status of the downhole rapid deployment device of the well logging instrument in the embodiment of the present invention;

[0042] Figure 2 It is a structural schematic diagram of a guide gun in an embodiment of the present invention;

[0043] Figure 3 is a cross-sectional view of a guide gun according to an embodiment of the present invention;

[0044] Figure 4 for Figure 3 A magnified schematic diagram of the middle A area;

[0045] Figure 5 It is a structural schematic diagram of the guide flywheel in an embodiment of the present invention;

[0046] Figure 6 is a side view of a guide flywheel in an embodiment of the present invention;

[0047] Figure 7 is a cross-sectional view of a guide flywheel in an embodiment of the present invention;

[0048] Figure 8 for Figure 7 A magnified schematic diagram of area B.

[0049] Description of reference numerals:

[0050] 1. Guide gun; 101. Mounting joint; 102. Upper conversion joint; 103. Rotating joint; 104. Lower conversion joint; 105. Guide cone; 106. Quick-spin nut; 106. Rubber bottom cone; 107. Cylindrical spring; 108. Anti-loosening gasket; 109. Sealing ring; 110. Protective cap; 111. Rubber O-ring; 2. Guide flywheel; 201. Support sleeve; 202. Mounting ring; 203. Limiting top screw; 204. Anti-retraction wave spring; 206. Rotating sleeve; 207. Support seat; 208. Rotating column; 209. Flywheel; 210. Guide arch surface; 211. Support hole; 212. Flywheel repair Core; 213, limit key; 214, limit groove; 3, first bearing assembly; 31, first oil-free bearing; 32, limit pressure ring; 33, support sleeve; 34, anti-loosening washer; 35, clamping nut; 36, compression wave spring; 4, silicone grease injection cavity; 5, silicone grease injection hole; 6, silicone grease injection plug; 7, second bearing assembly; 71, second oil-free bearing; 72, first thrust washer; 73, clamping nut; 74, bearing retaining ring; 75, second thrust washer; 8, locking top screw; 9, make way groove; 10, silicone grease injection channel; 11, filling flow channel; 12, filling hole; 13, filling plug; 14, mounting hole; 15, mounting groove. DETAILED DESCRIPTION

[0051] To make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other arbitrarily without conflict.

[0052] like Figure 1-Figure 8The embodiment of the present invention is shown in the figure, which discloses a downhole rapid deployment device for a well logging instrument, including a guide gun 1 and a plurality of guide flywheels 2. The guide gun 1 is used to be installed at the bottom of the well logging instrument and to locate the wellbore position so that the well logging instrument can smoothly enter the wellbore. One of the guide flywheels 2 is installed on the guide gun 1, and the remaining plurality of guide flywheels 2 are respectively installed on the well logging instrument to realize the straightening and guiding of the guide gun 1 and the well logging instrument in the wellbore, so that the well logging instrument can smoothly pass through the wellbore.

[0053] In one embodiment, Figure 2 , Figure 3 As shown, the guide gun 1 includes a mounting joint 101, an upper conversion joint 102, a rotary joint 103, a lower conversion joint 104 and a guide cone 105 which are arranged in sequence from top to bottom. The bottom of the mounting joint 101 is inserted into the upper conversion joint 102 and is threadedly connected to the upper conversion joint 102. The top of the rotary joint 103 is inserted into the upper conversion joint 102 and is connected to the upper conversion joint 102 through the first bearing assembly 3. The top of the lower conversion joint 104 is inserted into the rotary joint 103 and is threadedly connected to the rotary joint 103.

[0054] In one embodiment, Figure 2 , Figure 3 As shown, a quick-screw nut 106 is threadedly sleeved on the installation joint 101, and the quick-screw nut 106 is used to connect with the joint at the bottom of the logging instrument. At the same time, the top of the guide flywheel 2 installed on the guide gun 1 is connected to the installation joint 101, and the bottom is connected to the upper conversion joint 102.

[0055] In one embodiment, Figure 2 , Figure 3 As shown, the bottom of the rotary joint 103 is arranged in an inclined shape and has a tilting angle of 2°-5° with the vertical direction. At the same time, the mounting joint 101, the upper conversion joint 102 and the top of the rotary joint 103 are coaxial, and the bottom of the rotary joint 103, the lower conversion joint 104 and the guide cone 105 are coaxial, that is, the lower conversion joint 104 and the guide cone 105 are also inclined. When the rotary joint 103 drives the lower conversion joint 104 and the guide cone 105 to rotate, the rotation shape is conical.

[0056] In one embodiment, Figure 2 , Figure 3 As shown, the guide cone 105 is made of elastic material. In this embodiment, the guide cone 105 includes a rubber bottom cone 106 and a cylindrical spring 107. The cylindrical spring 107 is sleeved on the bottom of the lower conversion joint 104. The rubber bottom cone 106 is vulcanized and fixed to the bottom of the lower conversion joint 104, and wraps the cylindrical spring 107, so that the guide cone 105 has a certain rigidity and can automatically reset.

[0057] In the downhole rapid deployment device for well logging instruments in this embodiment, when the guide gun 1, the guide flywheel 2 and the well logging instrument are connected and the well logging instrument is lowered, if the direction of the wellbore changes, the rubber bottom cone 106 will touch the wellbore wall to achieve a rebound and toggle effect, thereby accurately finding the subsequent wellbore position and helping the well logging instrument to smoothly enter the wellbore, thereby achieving rapid deployment of the well logging instrument in a highly deviated well or horizontal well and improving the timeliness of the logging operation.

[0058] In one embodiment, Figure 2 , Figure 3 As shown, anti-loosening gaskets 108 are respectively arranged between the installation joint 101 and the upper conversion joint 102, and between the rotary joint 103 and the lower conversion joint 104, so as to realize the anti-loosening capability between two adjacent joints. At the same time, rubber sealing rings 109 are respectively arranged between the installation joint 101 and the upper conversion joint 102, and between the rotary joint 103 and the lower conversion joint 104, so as to realize the sealing between two adjacent joints.

[0059] In one embodiment, Figure 3 , Figure 4 As shown, the first bearing assembly 3 includes a first oil-free bearing 31, a limit pressure ring 32, a support sleeve 33, an anti-loosening washer 34 and a clamping nut 35 which are sequentially mounted on the rotary joint 103 from bottom right to top. The first oil-free bearing 31 is rotationally matched with the rotary joint 103, and the first bearing is interference fit with the inner wall of the upper conversion joint 102, so that the rotary joint 103 can rotate smoothly.

[0060] The limiting pressure ring 32 abuts against the top of the first oil-free bearing 31, and a compression wave spring 36 is provided on the rotary joint 103 and is located between the limiting pressure ring 32 and the support sleeve 33. The top of the compression wave spring 36 abuts against the support sleeve 33, and the bottom abuts against the limiting pressure ring 32. The compression wave spring 36 can not only realize the ability of tightening and preventing loosening, but also absorb adverse vibrations.

[0061] When the clamping nut 35 is tightened, the clamping nut 35, the locking washer 34 and the support sleeve 33 are closely abutted, and at this time, the compression wave spring 36 undergoes elastic compression deformation, and the limit pressure ring 32 is pressed against the top of the first oil-free bearing 31. When the installation joint 101 is threadedly connected with the upper conversion joint 102, the stepped surface at the bottom of the upper conversion joint 102 abuts against the clamping nut 35, thereby achieving a stable connection between the installation joint 101, the rotary joint 103 and the upper conversion joint 102.

[0062] In one embodiment, Figure 2 , Figure 3As shown, a silicone grease injection cavity 4 is provided at the bottom of the mounting joint 101, and the silicone grease injection cavity 4 is connected to the interior of the upper conversion joint 102, a silicone grease injection hole 5 connected to the silicone grease injection cavity 4 is opened on the side wall of the mounting joint 101, and a silicone grease injection plug 6 is connected to the inner thread of the silicone grease injection hole 5.

[0063] The silicone grease plug 6 is removed, and then the silicone grease can be injected into the silicone grease cavity 4 through the silicone grease hole 5. Subsequently, the silicone grease is filled into the upper conversion joint 102 and enters the gap between the first oil-free bearing 31 and the rotary joint 103 to achieve lubrication between the first oil-free bearing 31 and the rotary joint 103, thereby balancing the pressure difference between the inside and outside of the guide gun 1 while ensuring that the rotary joint 103 can rotate smoothly.

[0064] In one embodiment, Figure 2 , Figure 3 As shown, the guide gun 1 further includes a protective cap 110 threadedly sleeved on the top of the installation joint 101 to protect the installation joint 101, that is, when the guide gun 1 is transported or carried, the protective cap 110 can prevent the installation joint 101 from being damaged or dirty. At the same time, a rubber O-ring 111 is provided between the protective cap 110 and the installation joint 101 to achieve a seal therebetween, thereby improving the protection effect of the installation joint 101.

[0065] In one embodiment, Figure 5 , Figure 6 , Figure 7 As shown, the guide flywheel 2 includes a support sleeve 201, and the support sleeve 201 can be sleeved on the upper conversion joint 102 or the logging instrument. The two ends of the support sleeve 201 are respectively threaded with mounting rings 202, and each mounting ring 202 is respectively threaded with a plurality of limit screws 203, and the limit screws 203 are used to connect with the guide gun 1 or the logging instrument to achieve the fixation of the mounting ring 202. At the same time, an anti-retraction wave spring 204 is provided between the mounting ring 202 and the support sleeve 201 to achieve the anti-retraction ability of the mounting ring 202 and improve the connection stability.

[0066] In one embodiment, Figure 5 , Figure 6 , Figure 7 As shown, a rotating sleeve 206 is rotatably sleeved on the support sleeve 201, and a plurality of support seats 207 are integrally formed on the rotating sleeve 206, and the plurality of support seats 207 are arranged at equal intervals along the circumference of the rotating sleeve 206. A rotating column 208 is integrally formed on each support seat 207, and the axis of the rotating column 208 is perpendicular to the axis of the rotating sleeve 206, that is, the rotating column 208 is arranged along the radial direction of the rotating sleeve 206.

[0067] In one embodiment, Figure 5 , Figure 6 , Figure 7 As shown, a flywheel piece 209 is rotatably arranged on each rotating column 208, that is, the flywheel piece 209 can rotate along the rotating column 208, and can also revolve relative to the rotating sleeve 206. At the same time, the surface of the flywheel piece 209 is integrally formed with a guide arch surface 210 for contacting the inner wall of the wellbore to improve the guiding effect, so that the guide flywheel 2 can smoothly pass through the wellbore.

[0068] In this embodiment, the number of the support seats 207 is three, and the three support seats 207 are distributed at an interval of 120 degrees, and a mud discharge groove is formed between two adjacent support seats 207, so that mud can be discharged through the mud discharge groove, so that the logging instrument can pass through the wellbore smoothly. Of course, in other embodiments, the number of support seats 207 can also be other, which will not be listed in detail here.

[0069] In the prior art, logging instruments are usually provided with 4 or 6 rows of hook wrench holes. Therefore, in the present application, each mounting ring 202 is threadedly connected with 12 limit screws 203, and the 12 limit screws 203 are arranged at equal intervals to adapt to different numbers of hook wrench holes.

[0070] like Figure 5 As shown, in this embodiment, the guide flywheel 2 used in conjunction with the well logging instrument has a limiting top screw 203 on one side that cooperates with the hook wrench hole using a cylindrical head top screw, and a limiting top screw 203 on the other side using a concave top screw, because the concave top screw can tightly abut against the outer wall of the well logging instrument, thereby achieving the fixation of the guide flywheel 2 and the well logging instrument.

[0071] like Figure 2 , Figure 5 As shown, in this embodiment, the guide flywheel 2 used in conjunction with the guide gun 1 has cylindrical head top screws as the limiting top screws 203 on both sides. Therefore, 4 or 6 mounting holes 14 are respectively arranged in a row on the outer side walls of the upper mounting joint 101 and the upper conversion joint 102, and the mounting holes 14 have the same size as the hook wrench hole so that the cylindrical head top screws can be threadedly connected with the mounting holes 14.

[0072] Of course, four or six mounting holes 14 may be set in a row on the outer wall of the upper mounting joint 101, and an annular mounting groove 15 may be set on the outer wall of the upper conversion joint 102, so that the cylindrical head screw can be inserted into the mounting groove 15, and the upper conversion joint 102 is tightened to achieve the fixation of the guide flywheel 2.

[0073] In one embodiment, Figure 5 , Figure 6 , Figure 7As shown, a support hole 211 is provided through the middle of the flywheel piece 209, and the rotating column 208 passes through the support hole 211 and is rotatably matched with the flywheel piece 209 through the second bearing assembly 7, so that the flywheel piece 209 can rotate smoothly around the rotating axis. At the same time, a flywheel bushing 212 is tightly inserted into the support hole 211, and a limit key 213 is provided on the side wall of the flywheel bushing 212. A limit groove 214 for inserting the limit key 213 is provided on the flywheel piece 209, so that the flywheel bushing 212 can rotate with the flywheel piece 209.

[0074] In one embodiment, Figure 5 , Figure 6 , Figure 7 As shown, a plurality of locking screws 8 are threadedly connected to the flywheel piece 209. The plurality of locking screws 8 are arranged at equal intervals along the circumference of the flywheel piece 209, and the locking screws 8 are arranged along the radial direction of the flywheel piece 209, so that the ends of the locking screws 8 can be pressed against the screw holes on the side wall of the flywheel bushing 212, thereby fixing the flywheel piece 209 and the flywheel bushing 212.

[0075] In one embodiment, Figure 5 , Figure 6 , Figure 7 As shown, a plurality of paving grooves 9 are provided on the guide arch surface 210, and the plurality of paving grooves 9 are respectively provided along the radial direction of the flywheel plate 209. In this embodiment, the number of paving grooves 9 is 12, the number of locking top screws 8 is 6, and the 6 locking top screws 8 are respectively located in the corresponding paving grooves 9, that is, 6 of the paving grooves 9 are provided with locking top screws 8, and the remaining 6 paving grooves 9 are not provided with locking top screws 8, and the paving grooves 9 provided with locking top screws 8 are arranged alternately with the paving grooves 9 not provided with locking top screws 8. Of course, in other embodiments, 12 locking top screws 8 can also be provided, so that each paving groove 9 has a locking top screw 8.

[0076] In one embodiment, Figure 7 , Figure 8 As shown, the second bearing assembly 7 includes a second oil-free bearing 71 rotatably sleeved on the rotating column 208, and the second oil-free bearing 71 is interference fit with the inner wall of the support hole 211, so that the flywheel 209 can rotate smoothly. A first thrust washer 72 is sleeved on the rotating column 208, and the first thrust washer 72 abuts against the second oil-free bearing 71 to reduce friction, so that the flywheel 209 can rotate smoothly.

[0077] In one embodiment, Figure 7 , Figure 8As shown, a compression nut 73 is threadedly sleeved on the rotating column 208. When the compression nut 73 is tightened, the compression nut 73 can press the first thrust washer 72 onto the second oil-free bearing 71. At the same time, a bearing retaining ring 74 is clamped and fixed on the rotating column 208 by a clamping sleeve on the rotating column 208. At this time, the bearing retaining ring 74 abuts against the compression nut 73 and prevents the compression nut 73 from retreating, so as to improve the connection stability.

[0078] In one embodiment, Figure 7 , Figure 8 As shown, a second thrust washer 75 is provided between the flywheel piece 209 and the support seat 207 to reduce the friction between the flywheel piece 209 and the support seat 207 so that the flywheel piece 209 can rotate smoothly and the logging instrument can pass through the wellbore smoothly.

[0079] The rotation diameter of the guide flywheel 2 is larger than the rotation diameter of the guide gun 1. Therefore, when the logging instrument is lowered smoothly, the negative rotation of the rubber bottom cone 106 and the well wall will be offset, reducing the resistance of the logging instrument, so that the logging instrument can pass through the wellbore smoothly. At the same time, the rotation of the flywheel piece 209 can reduce friction, and the revolution can improve the "obstacle crossing" ability, helping the logging instrument to be lowered smoothly, improving the passability of the logging instrument, and thus improving the safety of the operation.

[0080] Moreover, the three flywheels 209 are spaced 120° apart, so that the logging instrument can always maintain the posture with the high side facing upwards by its own gravity, thus playing the role of a posture retainer. Moreover, when the guide flywheel 2 is arranged on the acoustic wave or imaging logging instrument, the guide flywheel 2 can also play the role of a centralizer, enhancing the centering effect of the logging instrument, and cooperating with the directional effect of the azimuth to improve the reliability of the logging data.

[0081] In one embodiment, Figure 7 , Figure 8 As shown, a silicone grease injection channel 10 is provided at the end of the rotating column 208, and a plurality of injection channels 11 are provided on the side wall of the rotating column 208. The plurality of injection channels 11 are arranged at equal intervals along the circumference of the rotating column 208, and one end of the plurality of injection channels 11 is respectively connected to the silicone grease injection channel 10, and the other end is respectively aligned with the second oil-free bearing 71. At the same time, a filling hole 12 connected to the silicone grease injection channel 10 is provided through the flywheel bushing 212, and a filling plug 13 is connected to the inner thread of the filling hole 12.

[0082] Remove the filling plug 13, and then inject silicone grease into the oil filling channel through the filling hole 12. Subsequently, the silicone grease is discharged through multiple filling channels 11 and enters the gap between the second oil-free bearing 71 and the rotating column 208 to achieve lubrication between the second oil-free bearing 71 and the rotating column 208, ensuring that the flywheel 209 can rotate smoothly.

[0083] From the above process, it can be seen that the use of this device can realize the rapid deployment of logging instruments in highly deviated wells or horizontal wells, and can also improve the "obstacle crossing" ability of logging instruments, help the logging instruments to be lowered smoothly, improve the passability of logging instruments, and thus improve the safety of operations. Compared with the original operation process, this device can be directly installed on the logging instrument, and the logging instrument can be lowered without the help of continuous tubing or downhole crawlers. The operation is simple, fast, time-saving and labor-saving, which can not only reduce the workload of operators, but also improve the timeliness of logging operations.

[0084] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present invention should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0085] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A downhole rapid deployment device for a well logging instrument, characterized in that: It comprises a guide gun (1) and a plurality of guide flywheels (2), wherein the guide gun (1) is used to be installed at the bottom of a well logging instrument and to accurately locate the wellbore, wherein one of the guide flywheels (2) is installed on the guide gun (1), and the remaining guide flywheels (2) are respectively installed on the well logging instrument to realize the straightening and guidance of the guide gun (1) and the well logging instrument in the wellbore; The guide gun (1) comprises a mounting joint (101), an upper conversion joint (102), a rotating joint (103), a lower conversion joint (104) and a guide cone (105) which are sequentially connected from top to bottom; a quick-screw nut (106) is threadedly sleeved on the mounting joint (101), and the quick-screw nut (106) is used to connect with a joint at the bottom of a well logging instrument; the top of the guide flywheel (2) mounted on the guide gun (1) is connected to the mounting joint (101), and the bottom is connected to the upper conversion joint (102); The rotary joint (103) is rotatably connected to the upper conversion joint (102); the bottom of the rotary joint (103) is arranged in an inclined shape and has a tilting angle of 2°-5° with respect to the vertical direction; the mounting joint (101), the upper conversion joint (102) and the top of the rotary joint (103) are coaxial; the bottom of the rotary joint (103), the lower conversion joint (104) and the guide cone (105) are coaxial; and the guide cone (105) is made of elastic material.

2. The downhole rapid deployment device for well logging instruments according to claim 1, characterized in that: The guide cone (105) comprises a rubber bottom cone (106) and a cylindrical spring (107), wherein the cylindrical spring (107) is sleeved on the bottom of the lower conversion joint (104), and the rubber bottom cone (106) is vulcanized and fixed to the bottom of the lower conversion joint (104) and wraps the cylindrical spring (107).

3. The downhole rapid deployment device for well logging instruments according to claim 1, characterized in that: The bottom of the mounting joint (101) is inserted into the upper conversion joint (102) and is threadedly connected to the upper conversion joint (102); the top of the rotating joint (103) is inserted into the upper conversion joint (102) and is connected to the upper conversion joint (102) via a first bearing assembly (3); the top of the lower conversion joint (104) is inserted into the rotating joint (103) and is threadedly connected to the rotating joint (103); Anti-loosening gaskets (108) are provided between the installation joint (101) and the upper conversion joint (102), and between the rotary joint (103) and the lower conversion joint (104), respectively; sealing rings (109) are provided between the installation joint (101) and the upper conversion joint (102), and between the rotary joint (103) and the lower conversion joint (104), respectively.

4. The downhole rapid deployment device for well logging instruments according to claim 3, characterized in that: The first bearing assembly (3) comprises: A first oil-free bearing (31) is rotatably sleeved on the rotary joint (103) and tightly matched with the inner wall of the upper conversion joint (102); A limiting pressure ring (32) is sleeved on the rotary joint (103) and abuts against the top of the first oil-free bearing (31); A support sleeve (33) is sleeved on the rotary joint (103) and is located above the limiting pressure ring (32); A compression wave spring (36) is sleeved on the rotary joint (103) and is located between the limiting pressure ring (32) and the support sleeve (33), wherein the top of the compression wave spring (36) abuts against the support sleeve (33) and the bottom abuts against the limiting pressure ring (32); A compression nut (35) threadedly sleeved on the top of the rotary joint (103); An anti-loosening washer (34) is sleeved on the rotary joint (103) and is compressed between the compression nut (35) and the support sleeve (33).

5. The downhole rapid deployment device for well logging instruments according to claim 4, characterized in that: The bottom of the installation joint (101) is provided with a silicone grease injection cavity (4), the silicone grease injection cavity (4) is connected to the interior of the upper conversion joint (102), the side wall of the installation joint (101) is provided with a silicone grease injection hole (5) connected to the silicone grease injection cavity (4), and the silicone grease injection hole (5) is internally threadedly connected to a silicone grease injection plug (6).

6. The downhole rapid deployment device for well logging instruments according to claim 1, characterized in that: The guide gun (1) further comprises a protective cap (110) threadedly sleeved on the top of the mounting joint (101), and a rubber O-ring (111) is provided between the protective cap (110) and the mounting joint (101).

7. The downhole rapid deployment device for well logging instruments according to claim 1, characterized in that: The guide flywheel (2) comprises: A support sleeve (201) is used for being sleeved on the upper conversion joint (102) or the well logging instrument; There are two mounting rings (202) and they are fixed to the corresponding ends of the support sleeve (201), each mounting ring (202) is threadedly connected with a plurality of limit screws (203), and the limit screws (203) are used to connect with the guide gun (1) or the well logging instrument to achieve the fixation of the mounting ring (202); A rotating sleeve (206) rotatably sleeved on the supporting sleeve (201); A plurality of support seats (207) are respectively arranged on the rotating sleeve (206), and the plurality of support seats (207) are arranged at equal intervals along the circumference of the rotating sleeve (206); There are multiple rotating columns (208) which are respectively arranged on the corresponding support seats (207), and the axis of the rotating column (208) is perpendicular to the axis of the rotating sleeve (206); There are multiple flywheel pieces (209) which are rotatably connected to the corresponding rotating columns (208) respectively. The surface of the flywheel piece (209) is provided with a guide arch surface (210) for contacting the inner wall of the wellbore.

8. The downhole rapid deployment device for well logging instruments according to claim 7, characterized in that: The mounting ring (202) is threadedly sleeved on the corresponding end of the supporting sleeve (201), and an anti-retraction wave spring (204) is arranged between the mounting ring (202) and the supporting sleeve (201).

9. The downhole rapid deployment device for well logging instruments according to claim 7, characterized in that: A support hole (211) is provided through the middle of the flywheel piece (209), the rotating column (208) passes through the support hole (211) and is rotatably matched with the flywheel piece (209) through the second bearing assembly (7), a flywheel bushing (212) is tightly inserted in the support hole (211), a limit key (213) is provided on the side wall of the flywheel bushing (212), and a limit groove (214) is provided on the flywheel piece (209) for the limit key (213) to be inserted; The flywheel plate (209) is threadedly connected with a plurality of locking top screws (8), and the locking top screws (8) are used to press against the top screw holes on the side wall of the flywheel bushing (212). The guide arch surface (210) is provided with a plurality of clearance grooves (9), the number of the clearance grooves (9) is at least the same as the number of the locking top screws (8), and each of the locking top screws (8) is individually located in a corresponding clearance groove (9).

10. The downhole rapid deployment device for well logging instruments according to claim 9, characterized in that: The second bearing assembly (7) comprises: A second oil-free bearing (71) is sleeved on the rotating column (208) and tightly matched with the inner wall of the supporting hole (211); A first thrust washer (72) is sleeved on the rotating column (208) and abuts against the second oil-free bearing (71); A compression nut (73) is threadedly sleeved on the rotating column (208) and compresses the thrust washer; A bearing retaining ring (74) is clamped on the rotating column (208) and abuts against the clamping nut (73) to prevent the clamping nut (73) from retreating; The second thrust washer (75) is arranged between the flywheel plate (209) and the support seat (207).

11. The downhole rapid deployment device of the well logging instrument according to claim 10, characterized in that: A silicone grease injection channel (10) is provided at the end of the rotating column (208), and a plurality of injection channels (11) are provided on the side wall of the rotating column (208), one end of each of the plurality of injection channels (11) is respectively connected to the silicone grease injection channel (10), and the other end is respectively aligned with the second oil-free bearing (71), and a filling hole (12) connected to the silicone grease injection channel (10) is provided through the flywheel bushing (212), and a filling plug (13) is connected to the inner thread of the filling hole (12).

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