Coiled tubing memory logging tool

Abstract

The utility model relates to a coiled tubing memory logging tool which comprises an outer cylinder assembly, a mandrel, a battery module, a data storage module, a protective sleeve, a data transmission module, a sensor set and a strain gauge set. Wherein the lower end of the mandrel is connected with a first thread at the upper end of the cylinder sleeve; the outer barrel assembly is formed by sequentially connecting an upper connector, a cylinder sleeve and a lower connector through threads. A closed annular space is formed between the outer cylinder assembly and the mandrel; a battery module, a data storage module and a data transmission module are arranged in the annular space; a sensor group and a strain gauge group are mounted on the cylinder sleeve; the sensor group is in direct contact with external liquid through the small holes; the strain gauge group is arranged in the closed space, and a protective sleeve is sleeved outside the strain gauge group; two ends of the coiled tubing memory logging tool are provided with sealing connection threads, and the coiled tubing memory logging tool is of a hollow structure. According to the utility model, the problems of slow transmission rate and easy loss of real-time logging data are solved; damage to the instrument is reduced, the instrument can pass through a narrow wellhead more easily, and potential safety hazards and well control risks are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of oil drilling and production, in particular to a continuous oil pipe memory logging tool. Background Art

[0002] The cable / fiber optic logging built into the coiled tubing can complete downhole television, RST testing, perforation and bridge plugging operations, and has the advantage of real-time signal transmission.

[0003] However, the existing technology for coiled tubing logging technology has the following defects:

[0004] 1. The data transmission rate of existing real-time data transmission is low and data is easily lost;

[0005] 2. In the prior art, there are few options for coiled tubing logging instruments. When cable / fiber logging encounters obstruction, it will lead to a complicated well control process. Cutting off the cable / fiber operation is prone to power outages, leakages and other dangers, posing a series of safety hazards. Utility Model Content

[0006] In view of the above problems, the utility model provides a continuous tubing memory logging tool, which aims to solve the problems of slow transmission rate and easy loss of real-time logging data; reduce the damage of the instrument, make it easier to pass through narrow wellheads, and further avoid safety hazards and well control risks.

[0007] In order to solve the above problems, the technical solution provided by the utility model is:

[0008] A coiled tubing memory logging tool comprises an outer tube assembly, a mandrel, a battery module, a data storage module, a protective sleeve, a data transmission module, a sensor group, and a strain gauge group; wherein:

[0009] The lower end of the mandrel is connected to the first thread of the upper end of the cylinder sleeve;

[0010] The outer cylinder assembly is composed of an upper joint, a cylinder sleeve, and a lower joint connected in sequence by threads; a closed annular space is formed between the outer cylinder assembly and the core shaft; the battery module, the data storage module, and the data transmission module are arranged in the annular space;

[0011] The sensor group and the strain gauge group are installed on the cylinder sleeve;

[0012] The sensor group is in direct contact with the external liquid through the small hole; the strain gauge group is arranged in a closed space, and the protective cover is sleeved on the outside;

[0013] The two ends of the coiled tubing memory logging tool are sealed connection threads, and the interior is a hollow structure.

[0014] Preferably, six semicircular long grooves are evenly arranged along the circumferential direction on the upper outer side of the core shaft; U-shaped hole sides are provided at both ends of each long groove; at the lower end of the long groove, three planar grooves are evenly arranged along the circumferential direction; screw holes are provided on both sides of each planar groove.

[0015] Preferably, the battery module comprises an outer cylinder, a lower end cover, a battery, a battery separator, an upper end cover, and a micro connector; wherein:

[0016] The lower end cover and the upper end cover are respectively threadedly connected to the two ends of the outer cylinder;

[0017] The battery and the battery separator are sequentially arranged in the inner cavity of the outer cylinder; the micro connector is inserted into the horizontal through holes evenly arranged on the end of the upper end cover.

[0018] Preferably, the data transmission module comprises an upper plug connector, an annular partition assembly, and a lower plug connector; wherein:

[0019] The upper plug connector, the annular partition assembly, and the lower plug connector are all annular cylinders;

[0020] A circle of holes of the same type and specification are arranged on the side surfaces of the respective cylinders of the upper plug connector, the annular partition assembly, and the lower plug connector; the upper plug connector, the annular partition assembly, and the lower plug connector are fixed to each other by means of copper rods, quick-connect plug assemblies, and long bolts.

[0021] Preferably, the first thread and the second thread are provided on the upper outer circle of the cylinder liner; an axial hole is provided on the solid step between the first thread and the second thread, and the hole mouth is threaded, and the hole tail turns 90 degrees to communicate with the outer circle of the cylinder liner; a sealing plug is provided at the outlet position of the hole on the outer circle of the cylinder liner.

[0022] Preferably, the data storage module comprises a first strain gauge, a second strain gauge, a third strain gauge, and a storage board; wherein:

[0023] Data line slots and lugs with holes are arranged on two side surfaces of the storage board; the storage board is fixed on the core shaft by screws.

[0024] Preferably, the strain gauge group includes a tensile strain gauge, a temperature compensation strain gauge, and a torque strain gauge; the tensile strain gauge, the temperature compensation strain gauge, and the torque strain gauge are arranged in sequence along the circumferential direction at the groove of the outer circle of the lower end of the cylinder sleeve; two third sealing rings for sealing are respectively arranged on both sides of the groove; the protective cover is connected to the outside of the groove.

[0025] Preferably, a first sealing ring is provided at the upper end of the core shaft and the inner hole of the upper joint; a second sealing ring is provided at the connection between the lower end of the core shaft and the cylinder sleeve; a fourth sealing ring is provided at the connection between the cylinder sleeve and the upper joint; and the fourth sealing ring is provided at the connection between the cylinder sleeve and the lower joint.

[0026] Preferably, two ends of the battery module are fixed in U-shaped grooves on the outer circle of the core shaft by first screws.

[0027] Preferably, through holes and special-shaped holes are arranged in a ring shape on the cylindrical side surfaces of the upper plug connector and the lower plug connector; wherein:

[0028] One side of the through hole is a countersunk hole;

[0029] The special-shaped hole is a small necked structure in the middle;

[0030] The quick-connect plug assembly is fixed at the necked position of the special-shaped hole;

[0031] The outer side of the annular partition assembly is provided with a fifth sealing ring, and the outer circle of the cylinder sleeve of the inner matching part is provided with a sixth sealing ring.

[0032] Compared with the prior art, the utility model has the following advantages:

[0033] 1. Since the utility model uses a continuous tubing to transport the memory logging tool into the well, the collected downhole geological data is directly stored in the tool, and data collection and analysis are performed when necessary, thereby solving the problem of slow transmission rate and easy loss of real-time logging data;

[0034] 2. The utility model reduces the possibility of damage to the instrument by integrating the sensor, strain gauge, data storage and transmission device inside the tool and protecting the instrument with a protective device, making it easier for the device to pass through a narrow wellhead, further avoiding safety hazards and well control risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the overall structure of the well logging tool of a specific embodiment of the utility model;

[0036] Figure 2 A schematic diagram of the structure of a battery module according to a specific embodiment of the utility model;

[0037] Figure 3 This is a schematic diagram of the structure of a data transmission module in a specific embodiment of the utility model;

[0038] Figure 4a It is a schematic top view of the structure of a data storage module according to a specific embodiment of the utility model;

[0039] Figure 4b It is a schematic side view of the structure of a data storage module according to a specific embodiment of the utility model;

[0040] Figure 5a This is a schematic diagram of the external structure of a sensor group according to a specific embodiment of the utility model;

[0041] Figure 5b The figure is a schematic diagram of the internal structure of the sensor group according to a specific embodiment of the present utility model.

[0042] Wherein: 1. upper joint, 2. first sealing ring, 3. first screw, 4. mandrel, 5. battery module, 6. data storage module, 7. second sealing ring, 8. data transmission module, 9. cylinder sleeve;

[0043] 10. third sealing ring, 11. protective sleeve, 12. seventh sealing ring, 13. lower joint, 14. plug, 15. fourth sealing ring;

[0044] 30. outer cylinder, 31. lower end cover, 32. battery, 33. battery separator, 34. upper end cover, 35. micro connector;

[0045] 40. Connector, 41. Annular baffle assembly, 42. Lower plug connection, 43. Copper rod, 45. Long bolt;

[0046] 50. first strain gauge, 51. second strain gauge, 52. third strain gauge, 53. storage plate, 54. second screw;

[0047] 60. Tensile strain gauge, 61. Temperature compensation strain gauge, 62. Torque strain gauge, 63. First sensor, 64. Second sensor;

[0048] 70. Quick-connect plug assembly, 71. Fifth sealing ring, 72. Sixth sealing ring. DETAILED DESCRIPTION

[0049] The present invention is further illustrated below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art all fall within the scope defined by the claims attached to this application.

[0050] It should be noted in advance that all directional indications in this specific embodiment, such as up, down, left, right, front, back, etc., are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0051] like Figure 1As shown, a coiled tubing memory logging tool comprises an outer barrel assembly, a core shaft 4, a battery module 5, a data storage module 6, a protective sleeve 11, a data transmission module 8, a sensor group, and a strain gauge group; wherein:

[0052] The lower end of the core shaft 4 is connected to the first thread of the upper end of the cylinder sleeve 9.

[0053] In this specific embodiment, six semicircular long grooves are evenly arranged along the circumferential direction on the upper outer side of the core shaft 4; U-shaped hole sides are provided at both ends of each long groove; at the lower end of the long groove, three planar grooves are evenly arranged along the circumferential direction; screw holes are provided on both sides of each planar groove.

[0054] The outer cylinder assembly is composed of an upper joint 1, a cylinder sleeve 9, and a lower joint 13 connected in sequence by threads; a closed annular space is formed between the outer cylinder assembly and the core shaft 4; a battery module 5, a data storage module 6, and a data transmission module 8 are arranged in the annular space.

[0055] It should be noted that the outer cylinder assembly is connected together by upper joint 1, cylinder sleeve 9 and lower joint 13 from top to bottom in sequence through threads; after the protective sleeve 11 is inserted from the lower end of the cylinder sleeve 9 and fixed by thread connection, the upper end of the protective sleeve rests against the outer cylindrical step surface of the cylinder sleeve 9.

[0056] It should be further explained that the upper and lower ends of the outer cylinder assembly are sealed cone threads for external connection.

[0057] It should be noted that the outer cylinder assembly and the outer side of the core shaft 4 form an annular closed space. In this annular space, the battery module 5 is installed in 6 axially evenly distributed arc grooves on the outer circle of the core shaft 4, and the two ends are fixed by the first screw 3. The data storage module 6 is installed in three grooves on the outer circle of the core shaft 4, and the two ends are fixed by the second screw 54.

[0058] In this specific embodiment, the core shaft 4 passes through the inner cavity of the upper joint 1 from the bottom, and the upper end abuts against the inner step surface of the upper joint 1, and two first sealing rings 2 are provided at the matching position for sealing; the lower end of the core shaft 4 is threadedly connected and fixed to the cylinder sleeve 9, and two second sealing rings 7 are provided at the matching surface at the front end of the threaded connection part for sealing.

[0059] In this specific embodiment, the battery module 5 includes an outer tube 30, a lower end cover 31, a battery 32, a battery separator 33, an upper end cover 34, and a micro connector 35; wherein:

[0060] The lower end cover 31 and the upper end cover 34 are respectively connected to the two ends of the outer cylinder 30 by threads.

[0061] The battery 32 and the battery separator 33 are sequentially arranged in the inner cavity of the outer cylinder 30 ; the micro connector 35 is inserted into the horizontal through holes evenly arranged on the end of the upper end cover 34 .

[0062] A sensor group and a strain gauge group are installed on the cylinder sleeve 9.

[0063] The sensor group is in direct contact with the external liquid through the small hole; the strain gauge group is arranged in a closed space, and a protective cover 11 is sleeved on the outside.

[0064] In this specific embodiment, the data transmission module 8 includes an upper plug connector 40, an annular partition assembly 41, and a lower plug connector 42; wherein:

[0065] The upper plug connector 40, the annular partition assembly 41, and the lower plug connector 42 are all annular cylinders.

[0066] A circle of holes of the same type and specification are arranged on the side of the respective cylinders of the upper plug connector 40, the annular partition assembly 41, and the lower plug connector 42; the upper plug connector 40, the annular partition assembly 41, and the lower plug connector 42 are fixed to each other by means of a copper rod 43, a quick-connect plug assembly 70, and a long bolt 45.

[0067] In this specific embodiment, the data storage module 6 includes a first strain gauge 50, a second strain gauge 51, a third strain gauge 52, and a storage board 53; wherein:

[0068] Data line slots and lugs with holes are provided on both sides of the storage plate 53; the storage plate 53 is fixed on the core shaft 4 by screws.

[0069] In this specific embodiment, the strain gauge group includes a tensile strain gauge 60, a temperature compensation strain gauge 61, and a torque strain gauge 62; the tensile strain gauge 60, the temperature compensation strain gauge 61, and the torque strain gauge 62 are arranged in sequence along the circumferential direction at the groove of the outer circle of the lower end of the cylinder sleeve 9; two third sealing rings 10 for sealing are respectively arranged on both sides of the groove; and a protective cover 11 is connected to the outside of the groove.

[0070] The two ends of the coiled tubing memory logging tool are sealed connection threads, and the interior is a hollow structure.

[0071] In this specific embodiment, a first sealing ring 2 is provided at the upper end of the core shaft 4 and the inner hole of the upper joint 1; a second sealing ring 7 is provided at the connection between the lower end of the core shaft 4 and the cylinder sleeve 9; a fourth sealing ring 15 is provided at the connection between the cylinder sleeve 9 and the upper joint 1; and a fourth sealing ring 15 is provided at the connection between the cylinder sleeve 9 and the lower joint 13.

[0072] In this specific embodiment, a first thread and a second thread are provided on the upper outer circle of the cylinder liner 9; an axial hole is provided on the solid step between the first thread and the second thread, and the hole mouth is threaded, and the tail of the hole turns 90 degrees to communicate with the outer circle of the cylinder liner 9; a sealing plug 14 is provided at the outlet position of the hole on the outer circle of the cylinder liner 9.

[0073] It should be noted that the first thread on the upper end of the cylinder sleeve 9 is connected to the lower end of the core shaft 4, and the second thread is connected to the lower end of the upper joint 1; two fourth sealing rings 15 are installed on the mating surface at the front end of the second thread connection.

[0074] It should be further explained that the outer circle of the upper end of the cylinder sleeve 9 and the inner cavity of the upper joint 1 also form an annular closed space and a data transmission module 8 is installed.

[0075] In this specific embodiment, the data transmission module 8 is composed of an upper plug connector 40, an annular partition assembly 41 and a lower plug connector 42. They are sequentially installed in the annular space from top to bottom and close together.

[0076] In this specific embodiment, the upper plug connector 40 is sleeved on the outer circle of the core shaft 4, and the upper end is against the step surface. The annular partition assembly 41 and the lower plug connector 42 are sleeved on the outer circle of the cylinder sleeve 9.

[0077] It should be further explained that a fifth sealing ring 71 and a sixth sealing ring 72 are provided on the mating surface between the inner hole of the annular partition assembly 41 and the outer circle of the cylinder sleeve 9 , and the mating surface between the outer circle and the inner hole of the upper joint 1 .

[0078] It should be further explained that two third sealing rings 10 are respectively installed at the inner hole matching surface of the protective sleeve 11 installed at the lower end of the cylinder sleeve 9, and their function is to prevent liquid from entering the groove and damaging the strain gauge.

[0079] It should be further explained that the front end mating surface where the lower end of the cylinder sleeve 9 is threadedly connected to the lower joint 13 is provided with a seventh sealing ring 12 for sealing.

[0080] like Figure 2 As shown, the battery 32 of the battery module 5 is inserted into the interior of the outer tube 30; there is a battery separator 33 between the batteries 32; the two ends of the outer tube 30 are threadedly connected to the lower end cover 31 and the upper end cover 34; the micro connector 35 is inserted into the horizontal through holes evenly arranged at the ends of the upper end cover 34.

[0081] In this specific embodiment, both ends of the battery module 5 are fixed in the U-shaped groove on the outer circle of the core shaft 4 by the first screws 3 .

[0082] like Figure 3 As shown, the upper plug connector 40, the annular partition assembly 41, and the lower plug connector 42 of the data transmission module 8 are all provided with holes of the same type, quantity, and specification on their sides. The copper rod 43 and the quick-connect plug assembly 70 installed in the annular partition assembly 41 are fixed together by long bolts 45.

[0083] In this specific embodiment, through holes and special-shaped holes are arranged in a ring on the cylindrical side surfaces of the upper plug connector 40 and the lower plug connector 42; wherein:

[0084] One side of the through hole is a countersunk hole.

[0085] The special-shaped hole has a small neck structure in the middle.

[0086] The quick-connect plug assembly 70 is fixed at the necked position of the special-shaped hole.

[0087] A fifth sealing ring 71 is disposed on the outer side of the annular partition assembly 41. A sixth sealing ring 72 is disposed on the outer circumference of the cylinder sleeve 9 of the inner matching portion.

[0088] like Figure 4a to Figure 4b As shown, in this specific embodiment, both ends of the data storage module 6 are fixed to the core shaft 4 by screws, and a first strain gauge 50, a second strain gauge 51, a third strain gauge 52 and a storage plate 53 are arranged thereon.

[0089] In this specific embodiment, data line slots are provided on both sides of the storage board 53 to connect data transmission lines.

[0090] like Figure 5a to Figure 5b As shown, in this specific embodiment, the first sensor 63 and the second sensor 64 are installed horizontally on the solid step between the first thread and the second thread at the upper end of the cylinder sleeve 9. The first sensor 63 and the second sensor 64 can directly contact and sense the fluid at the bottom of the well through the small through hole on the cylinder sleeve 9. There is a groove at the lower end of the cylinder sleeve 9, and the tension strain gauge 60, the temperature compensation strain gauge 61, and the torque strain gauge 62 are fixed on the outer circle of the groove, which can sense different types of data downhole.

[0091] It should be further explained that, when applied, the coiled tubing of the utility model is connected to the memory logging tool and put into the well. After reaching the designated logging position, under the continuous power supply of the battery module 5, the sensor group and the strain gauge group on the tool collect the sensed downhole temperature, pressure, acceleration and other data and transmit them to the data storage module 6 through the data transmission module 8. When necessary, the data samples are taken out from the data storage module 6 and analyzed.

[0092] The coiled tubing memory logging tool described in the utility model is used to store the collected data on-site, solving the problem of slow transmission rate and easy loss of real-time logging data. At the same time, through the coiled tubing transmission, no cables, optical fibers or other logging instruments are required, and the sensor group, strain gauge group, data storage module 6 and data transmission module 8 are protected inside the tool, reducing the damage to the instrument and avoiding safety hazards and well control risks.

[0093] In the above detailed description, various features are grouped together in a single embodiment to simplify the disclosure. This method of disclosure should not be interpreted as reflecting an intention that the embodiments of the claimed subject matter require more features than those clearly stated in each claim. On the contrary, as reflected in the attached claims, the utility model is in a state with less than all the features of the disclosed individual embodiments. Therefore, the attached claims are hereby expressly incorporated into the detailed description, with each claim acting alone as a separate preferred embodiment of the utility model.

[0094] The disclosed embodiments are described above to enable any person skilled in the art to implement or use the present invention. Various modifications of these embodiments are obvious to those skilled in the art, and the general principles defined herein may also be applied to other embodiments without departing from the spirit and scope of the present disclosure. Therefore, the present disclosure is not limited to the embodiments given herein, but is consistent with the broadest scope of the principles and novel features disclosed in the present application.

[0095] The above description includes examples of one or more embodiments. Of course, it is not possible to describe all possible combinations of components or methods for the purpose of describing the above embodiments, but it should be recognized by those skilled in the art that the various embodiments may be further combined and arranged. Therefore, the embodiments described herein are intended to cover all such changes, modifications and variations that fall within the scope of protection of the appended claims. In addition, with respect to the term "comprising" used in the specification or claims, the word is covered in a manner similar to the term "including", just as "including," is explained as a transitional word in the claims. In addition, any term "or" used in the specification of the claims is intended to mean "non-exclusive or".

[0096] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A coiled tubing memory logging tool, characterized in that: It comprises an outer cylinder assembly, a core shaft (4), a battery module (5), a data storage module (6), a protective sleeve (11), a data transmission module, a sensor group, and a strain gauge group; wherein: The lower end of the core shaft (4) is connected to the first thread of the upper end of the cylinder sleeve (9); The outer cylinder assembly is composed of an upper joint (1), a cylinder sleeve (9), and a lower joint (13) which are connected in sequence by threads; a closed annular space is formed between the outer cylinder assembly and the core shaft (4); the battery module (5), the data storage module (6), and the data transmission module are arranged in the annular space; The sensor group and the strain gauge group are installed on the cylinder sleeve (9); The sensor group is in direct contact with external liquid through a small hole; the strain gauge group is arranged in a closed space, and the protective cover (11) is sleeved on the outside; The two ends of the coiled tubing memory logging tool are sealed connection threads, and the interior is a hollow structure.

2. The coiled tubing memory logging tool according to claim 1, characterized in that: Six semicircular long grooves are evenly arranged along the circumferential direction on the upper outer side of the core shaft (4); U-shaped hole sides are arranged at both ends of each long groove; three planar grooves are evenly arranged along the circumferential direction at the lower end of the long groove; screw holes are arranged on both sides of each planar groove.

3. The coiled tubing memory logging tool according to claim 2, characterized in that: The battery module (5) comprises an outer cylinder (30), a lower end cover (31), a battery (32), a battery separator (33), an upper end cover (34), and a micro connector (35); wherein: The lower end cover (31) and the upper end cover (34) are respectively threadedly connected to two ends of the outer cylinder (30); The battery (32) and the battery separator (33) are sequentially arranged in the inner cavity of the outer cylinder (30); the micro connector (35) is connected to the horizontal through holes evenly arranged on the end of the upper end cover (34).

4. The coiled tubing memory logging tool according to claim 3, characterized in that: The data transmission module comprises an upper plug connector (40), an annular partition assembly (41), and a lower plug connector (42); wherein: The upper plug connector (40), the annular partition assembly (41), and the lower plug connector (42) are all annular cylinders; A circle of holes of the same type and specification are arranged on the side surfaces of the respective cylinders of the upper plug connector (40), the annular partition assembly (41), and the lower plug connector (42); the upper plug connector (40), the annular partition assembly (41), and the lower plug connector (42) are fixed to each other by means of a copper rod (43), a quick-connect plug assembly (70), and a long bolt (45).

5. The coiled tubing memory logging tool according to claim 4, characterized in that: The first thread and the second thread are provided on the upper outer circle of the cylinder sleeve (9); an axial hole is provided on the solid step between the first thread and the second thread, and the hole mouth is threaded, and the hole tail turns 90 degrees to communicate with the outer circle of the cylinder sleeve (9); a sealing plug (14) is provided at the outlet position of the hole on the outer circle of the cylinder sleeve (9).

6. The coiled tubing memory logging tool according to claim 5, characterized in that: The data storage module (6) comprises a first strain gauge (50), a second strain gauge (51), a third strain gauge (52), and a storage plate (53); wherein: Both sides of the storage plate (53) are provided with data line slots and lugs with holes; the storage plate (53) is fixed on the core shaft (4) by means of screws.

7. The coiled tubing memory logging tool according to claim 6, characterized in that: The strain gauge group comprises a tensile strain gauge (60), a temperature compensation strain gauge (61), and a torque strain gauge (62); the tensile strain gauge (60), the temperature compensation strain gauge (61), and the torque strain gauge (62) are sequentially arranged along the circumferential direction at the groove of the outer circle of the lower end of the cylinder sleeve (9); two third sealing rings (10) for sealing are respectively arranged on both sides of the groove; and the protective sleeve (11) is sleeved on the outside of the groove.

8. The coiled tubing memory logging tool according to claim 7, characterized in that: A first sealing ring (2) is provided at the upper end of the core shaft (4) and the inner hole of the upper joint (1); a second sealing ring (7) is provided at the connection between the lower end of the core shaft (4) and the cylinder sleeve (9); a fourth sealing ring (15) is provided at the connection between the cylinder sleeve (9) and the upper joint (1); and the fourth sealing ring (15) is provided at the connection between the cylinder sleeve (9) and the lower joint (13).

9. The coiled tubing memory logging tool according to claim 8, characterized in that: The two ends of the battery module (5) are fixed in the U-shaped groove on the outer circle of the core shaft (4) by means of first screws (3).

10. The coiled tubing memory logging tool according to claim 9, characterized in that: Through holes and special-shaped holes are arranged in an annular manner on the cylindrical side surfaces of the upper plug connector (40) and the lower plug connector (42); wherein: One side of the through hole is a countersunk hole; The special-shaped hole is a small necked structure in the middle; The quick-connect plug assembly (70) is fixed at the necked position of the special-shaped hole; A fifth sealing ring (71) is disposed on the outer side of the annular partition assembly (41); and a sixth sealing ring (72) is disposed on the outer circumference of the cylinder sleeve (9) of the inner matching portion.

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