Wireless pulse transmission logging device

Abstract

The utility model discloses a wireless pulse transmission logging device which comprises a collar body assembly and an in-collar assembly clamped on the inner side of the collar body assembly. The collar body assembly and the collar inner assembly are fixed through a fixing screw, the collar body assembly and the change-over connector assembly are fixed through opposite screwing, an insertion head in the change-over connector assembly and an insertion head on the collar inner assembly form opposite insertion, the collar body assembly comprises a hanging short section, an outer collar and a double-male connector, and the outer collar and the double-male connector are fixed through a fixing screw. An inner hole of the hanging short section is provided with a variable diameter to form a step for clamping the collar inner assembly, the collar inner assembly comprises a pulser, a battery, a signal transmission short section and a telescopic butt joint, and the pulser, the battery, the signal transmission short section and the telescopic butt joint are in butt joint through threads. According to the wireless pulse transmission well logging device, the wireless transmission system is in butt joint with the well logging system, the wireless transmission system is introduced into well logging, and real-time uploading of well logging data is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of petroleum well logging, in particular to a wireless pulse transmission well logging device. Background Art

[0002] Oil and gas resources are very important energy sources in the process of social and economic development. At present, the exploitation of many oil and gas fields in my country has reached the late development stage. The growth rate of oil production has slowed down and the difficulty of exploitation has continued to increase. In order to solve these problems, the large displacement direct inference well drilling method came into being. The large displacement direct inference well drilling instrument string is a storage logging instrument. There is no cable to transmit the well condition information to the ground in real time. Instead, the well condition information is stored in the logging instrument. After the logging is completed, the stored well condition information is read on the ground. Therefore, the ground cannot read the logging instrument status in real time during logging, which will cause the well condition information to be lost and repeated logging is required, or the instrument is damaged and stuck in the well, etc., causing a series of economic losses. In order for the ground to be able to read the status of the logging instrument in real time during logging, we need to use wireless transmission to transmit information to the ground.

[0003] Therefore, we propose a wireless pulse transmission logging device to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a wireless pulse transmission logging device to solve the problem raised by the above-mentioned background technology that the large displacement direct inference well logging instrument string currently on the market is a storage-type logging instrument, and there is no cable to transmit the well condition information to the ground in real time. Instead, the well condition information is stored in the logging instrument, and the stored well condition information is read on the ground after the logging is completed. Therefore, the ground cannot read the logging instrument status in real time during logging, which will lead to the loss of well condition information and the need for repeated logging or the instrument being damaged and stuck in the well, etc., causing a series of economic losses.

[0005] To achieve the above object, the utility model provides the following technical solutions: a wireless pulse transmission logging device, comprising a collar assembly and an inner collar assembly seated inside the collar assembly;

[0006] Also includes:

[0007] The collar body assembly and the collar inner assembly are fixed by fixing screws, the collar body assembly and the conversion joint assembly are fixed by twisting, and the plug in the conversion joint assembly is plugged into the plug on the collar inner assembly.

[0008] Preferably, the collar body assembly includes a suspension pup joint, an outer collar and a double male connector, the suspension pup joint is in the shape of a hollow ring, the inner hole of the suspension pup joint has a diameter change to form a step for seating the inner collar assembly, and the side wall of the suspension pup joint is provided with a threaded hole for fixing the inner collar assembly.

[0009] Preferably, a first tapered threaded hole is provided on one side of the suspension nipple for docking with a logging drill pipe, and a first tapered thread is provided on the other side of the suspension nipple.

[0010] Preferably, the outer collar is in a hollow ring shape, and a second tapered threaded hole and a third tapered threaded hole are formed on both sides of the outer collar;

[0011] The double male connector is provided with a second tapered thread and a third tapered thread on both sides.

[0012] Preferably, the first tapered thread of the suspension nipple is screwed with the second tapered threaded hole of the outer collar, and the third tapered threaded hole of the outer collar is screwed with the second tapered thread of the double male connector to form a collar assembly.

[0013] Preferably, the collar inner component includes a pulser, a battery, a signal transmission short section and a telescopic butt joint, and the pulser, the battery, the signal transmission short section and the telescopic butt joint are butt jointed together by threads.

[0014] Preferably, the adapter assembly comprises a three-core adapter, an adapter outer collar, an anti-scouring ring, a adapter plug, a lower sleeve, a pressure block and a retaining ring;

[0015] The conversion outer collar is in a hollow ring shape, a fourth tapered threaded hole is opened on one side of the conversion outer collar, an external thread is opened on the one side, and a plurality of inclined holes are opened on the side wall of the conversion outer collar.

[0016] Compared with the prior art, the beneficial effects of the utility model are: the wireless pulse transmission logging device, the wireless transmission system is connected with the logging system, the wireless transmission system is introduced into the logging, and the real-time uploading of the logging data is realized, as shown in the following content:

[0017] The collar assembly includes a suspension nipple, an outer collar and a double male joint. The suspension nipple is a hollow ring, and the inner hole of the suspension nipple has a diameter change to form a step for seating the inner collar assembly. The side wall of the suspension nipple is provided with a threaded hole for fixing the inner collar assembly, so as to facilitate the installation between the collar assembly and the inner collar assembly.

[0018] Furthermore, the collar internal components include a pulser, a battery, a signal transmission short section and a telescopic butt joint, and the pulser, the battery, the signal transmission short section and the telescopic butt joint are butt jointed together by threads, so as to facilitate the assembly of the collar internal components;

[0019] Furthermore, the conversion joint assembly includes a three-core conversion joint, a conversion outer collar, an erosion-resistant ring, a conversion plug, a lower sleeve, a pressure block and a retaining ring, so that the device can be used better;

[0020] Furthermore, the outer collar is in a hollow ring shape, and a second tapered threaded hole and a third tapered threaded hole are provided on both sides of the outer collar, which is convenient for the installation operation of the staff, making the device more convenient to use, realizing the purpose of docking the wireless transmission system with the logging system, and facilitating the real-time uploading of the logging data;

[0021] The instrument information of the direct-push instrument in the well (whether the direct-push instrument is working normally), instrument current / voltage, instrument tension pressure and other information are uploaded to the ground through the mud pressure pulse by the signal transmission short section control pulser, realizing the real-time transmission of logging information to the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall main structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the collar assembly of the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the components inside the collar of the utility model;

[0026] Figure 5 This is a schematic diagram of the connection structure between the collar body component and the collar inner component of the utility model;

[0027] Figure 6 This is a schematic diagram of the connection structure between the suspension nipple and the outer collar of the utility model;

[0028] Figure 7 This is a schematic diagram of the structure of the pulser of the utility model;

[0029] Figure 8 This is a schematic diagram of the structure of the joint changer assembly of the utility model.

[0030] In the figure: 1. collar assembly; 11. suspension nipple; 111. first tapered threaded hole; 112. threaded hole; 113. step; 114. first tapered thread; 141. fourth tapered threaded hole; 12. outer collar; 121. second tapered threaded hole; 122. third tapered threaded hole; 13. double male connector; 131. second tapered thread; 132. third tapered thread; 2. collar inner assembly; 21. pulser; 22. battery; 23. signal transmission nipple; 24. telescopic joint; 3. fixing screw; 4. conversion joint assembly; 41. three-core conversion joint; 42. conversion outer collar; 421. oblique hole; 422. external thread; 43. erosion-resistant ring; 44. conversion plug; 45. lower sleeve; 46. pressure block; 47. retaining ring. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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. Embodiment 1:

[0032] In this embodiment, the connection between the collar body component 1 and the inner collar component 2 is disclosed, as shown in FIG. Figure 1-Figure 5 As shown:

[0033] The collar body component 1 and the collar inner component 2 are fixed by fixing screws 3, and the collar body component 1 and the conversion joint component 4 are fixed by twisting, and the plug in the conversion joint component 4 is plugged into the plug on the collar inner component 2;

[0034] The collar assembly 1 includes a suspension nipple 11, an outer collar 12 and a double male connector 13. The suspension nipple 11 is in a hollow ring shape. The inner hole of the suspension nipple 11 has a diameter change to form a step 113 for seating the inner collar assembly 2. The side wall of the suspension nipple 11 is provided with a threaded hole 112 for fixing the inner collar assembly 2.

[0035] The outer collar 12 is in a hollow ring shape, and a second tapered threaded hole 121 and a third tapered threaded hole 122 are formed on both sides of the outer collar 12;

[0036] The double male connector 13 is provided with a second tapered thread 131 and a third tapered thread 132 on both sides;

[0037] A first tapered thread hole 111 is provided on one side of the suspension sub 11 for docking with the logging drill pipe, and a first tapered thread 114 is provided on the other side of the suspension sub 11;

[0038] When using the wireless pulse transmission logging device, firstly, the collar body component 1 and the inner collar component 2 are connected respectively, the first tapered thread 114 of the suspension short section 11 is screwed with the second tapered threaded hole 121 of the outer collar 12, the third tapered threaded hole 122 of the outer collar 12 is screwed with the second tapered thread 131 of the double male connector 13 to form the collar body component 1, the pulser 21, the battery 22, the signal transmission short section 23 and the telescopic docking joint 24 are connected together by threads to form the inner collar component 2, the inner collar component 2 is clamped in the collar body component 1, and then the fixing screw 3 is screwed into the screw hole on the side wall of the collar body component 1 to fix the inner collar component 2, the conversion joint component 4 is screwed together with the collar body component 1, and at the same time, the plug in the conversion joint component 4 is plugged with the plug on the inner collar component 2, and then the inner collar component 2 is installed in the collar body component 1 and fixed with the fixing screw 3. Embodiment 2:

[0039] In this embodiment, the conversion plug 44 and the three-core conversion connector 41 are designed to be plug-in, so that the electrical connection between the two can be connected and disconnected at any time, which is convenient for later disassembly and maintenance. Figure 6-Figure 7 As shown:

[0040] The first tapered thread 114 of the suspension nipple 11 is screwed with the second tapered threaded hole 121 of the outer collar 12, and the third tapered threaded hole 122 of the outer collar 12 is screwed with the second tapered thread 131 of the double male connector 13 to form the collar assembly 1;

[0041] The collar inner component 2 includes a pulser 21, a battery 22, a signal transmission short section 23 and a telescopic butt joint 24, and the pulser 21, the battery 22, the signal transmission short section 23 and the telescopic butt joint 24 are butt jointed together by threads;

[0042] The conversion joint assembly 4 includes a three-core conversion joint 41, a conversion outer collar 42, an anti-scouring ring 43, a conversion plug 44, a lower sleeve 45, a pressure block 46 and a retaining ring 47;

[0043] The outer collar 42 is converted into a hollow ring, a fourth tapered threaded hole 141 is opened on one side of the outer collar 42, an outer thread 422 is opened on one side, and a plurality of oblique holes 421 are opened on the side wall of the outer collar 42;

[0044] Then, the three-core conversion connector 41 is screwed into the conversion outer collar 42 from the fourth tapered threaded hole 141 of the conversion outer collar 42, with an anti-scouring ring 43 between the two. The anti-scouring ring 43 can protect the inner hole end face of the conversion outer collar 42 and the lower outer wall of the three-core conversion connector 41, reducing the scouring of the mud thereon. During subsequent maintenance, only the anti-scouring ring 43 needs to be replaced, and then the conversion plug 44 is installed from the side of the external thread 422 of the conversion outer collar 42, and is directly connected to the three-core conversion connector 41, so that the plug of the three-core conversion connector 41 is converted into the plug of the pressure block 46. The conversion plug 44 and the three-core conversion connector 41 are designed as direct plug-in type, so that the electrical connection between the two can be connected and disconnected as needed, which is convenient for later disassembly and maintenance.

[0045] Then, the lower sleeve 45 is screwed to the conversion outer collar 42 through the external thread 422, and the pressure block 46 is installed from one side of the lower sleeve 45 and plugged together with the conversion plug 44. The retaining ring 47 is stuck in the inner groove of the lower sleeve 45 to fix the pressure block 46. Embodiment three:

[0046] In this embodiment, the third tapered thread 132 in the collar assembly 1 is screwed with the external thread 422 in the conversion joint assembly 4 to achieve the overall connection of the device. Figure 8 As shown:

[0047] Afterwards, one end of the lower sleeve 45 of the conversion joint assembly 4 is screwed and connected to the direct-push instrument string and seated at the wellhead, and the third tapered thread 132 in the collar assembly 1 is screwed with the external thread 422 in the conversion joint assembly 4, so as to realize the overall connection of the wireless pulse transmission downhole system. The above is the working process of the entire device. The contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0048] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A wireless pulse transmission logging device, comprising a collar assembly (1) and an inner collar assembly (2) clamped inside the collar assembly (1); It is characterized in that Also includes: The collar body assembly (1) and the collar inner assembly (2) are fixed by means of fixing screws (3), the collar body assembly (1) and the conversion joint assembly (4) are fixed by means of counter-twisting, and the plug in the conversion joint assembly (4) is plugged into the plug on the collar inner assembly (2).

2. A wireless pulse transmission logging device according to claim 1, characterized in that: The collar assembly (1) comprises a suspension nipple (11), an outer collar (12) and a double male connector (13); the suspension nipple (11) is in the shape of a hollow ring; an inner hole of the suspension nipple (11) has a diameter change to form a step (113) for seating the inner collar assembly (2); a threaded hole (112) is provided on a side wall of the suspension nipple (11) for fixing the inner collar assembly (2).

3. A wireless pulse transmission logging device according to claim 2, characterized in that: A first tapered thread hole (111) is provided on one side of the suspension nipple (11) for docking with a well logging drill pipe, and a first tapered thread (114) is provided on the other side of the suspension nipple (11).

4. A wireless pulse transmission logging device according to claim 2, characterized in that: The outer collar (12) is in the shape of a hollow ring, and a second tapered threaded hole (121) and a third tapered threaded hole (122) are formed on two sides of the outer collar (12); A second tapered thread (131) and a third tapered thread (132) are provided on both sides of the double male connector (13).

5. A wireless pulse transmission logging device according to claim 2, characterized in that: The first tapered thread (114) of the suspension nipple (11) is screwed together with the second tapered threaded hole (121) of the outer collar (12), and the third tapered threaded hole (122) of the outer collar (12) is screwed together with the second tapered thread (131) of the double male connector (13) to form a collar assembly (1).

6. A wireless pulse transmission logging device according to claim 1, characterized in that: The collar inner component (2) comprises a pulser (21), a battery (22), a signal transmission short section (23) and a telescopic butt joint (24), and the pulser (21), the battery (22), the signal transmission short section (23) and the telescopic butt joint (24) are butt-jointed together via threads.

7. A wireless pulse transmission logging device according to claim 1, characterized in that: The conversion joint assembly (4) comprises a three-core conversion joint (41), a conversion outer collar (42), an erosion-resistant ring (43), a conversion plug (44), a lower sleeve (45), a pressure block (46) and a retaining ring (47); The conversion outer collar (42) is in the shape of a hollow ring, a fourth tapered threaded hole (141) is provided on one side of the conversion outer collar (42), an external thread (422) is provided on the one side, and a plurality of inclined holes (421) are provided on the side wall of the conversion outer collar (42).

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