Ultrahigh-temperature high-pressure lithologic density sidewall contact device

Abstract

The utility model discloses an ultra-high-temperature and high-pressure lithologic density sidewall contact device which comprises a high-pressure upper connector outer cylinder and a lithologic density logger shell, and an upper connector circuit assembly is arranged in the high-pressure upper connector outer cylinder. A transmission assembly, a borehole diameter assembly, a spring hinge assembly, a probe guide arm assembly and a probe assembly are sequentially assembled and connected in the lithologic density logging instrument shell, the utility model relates to the technical field of drilling exploration, an existing lithologic density logging instrument is improved, an upper arm connector is hinged to one end of an upper arm of a traditional logging instrument, and a lower arm connector is hinged to the other end of the lower arm of the traditional logging instrument. The inverted structure design of the thermos bottle and the probe shell assembly is achieved through the upper arm connector, the probe cable and the control module are integrally installed at one end of the upper arm connector, and when assembling or disassembling is needed, the probe shell assembly and the thermos bottle can be directly taken down after the hinge limiting component is disassembled, so that assembling and disassembling are convenient. The probe cable and the control module can be completely exposed, the structure is simple, and the operation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of drilling exploration technology, specifically to an ultra-high temperature and high pressure lithological density pusher. Background Technology

[0002] Lithology density logging is a relatively mature geophysical logging method developed based on formation density logging. Using lithology density logging, not only can reservoir porosity data be obtained, but the lithology of most complex formations can also be effectively identified. The ultra-high temperature and high pressure lithology density pusher mainly consists of components such as a cable sub, pusher, housing components, probe, and wellbore potentiometer. When assembling the mechanical parts of the lithology density instrument, each component should be assembled first before assembling and debugging the entire assembly. The pusher and logging probe are the core components of the core density logging instrument. In traditional designs, the mounting port of the logging probe is mostly located at the lower end of the probe housing, while the overall instrument cable is arranged from top to bottom. This makes wiring the circuitry, wires, and source chamber inside the probe housing difficult, increasing the difficulty of maintenance. Therefore, this project was developed to address these issues. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides an ultra-high temperature and high pressure lithological density pusher, which solves the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: an ultra-high temperature and high pressure lithological density pusher, comprising a high-pressure upper connector outer cylinder and a lithological density logging instrument housing. An upper connector circuit assembly is installed inside the high-pressure upper connector outer cylinder. A transmission assembly, a wellbore assembly, a spring hinge assembly, a probe arm assembly, and a probe assembly are sequentially assembled and connected inside the lithological density logging instrument housing. The probe assembly includes an upper arm connector hinged to one end of the upper arm. One end of the upper arm connector is connected to a thermos bottle. A probe cable and a control module are integrated at one end of the upper arm connector. A probe housing assembly is fitted outside the thermos bottle. The probe housing assembly is fitted with a probe connecting screw on the upper arm connector. A probe cap is installed at the lower end of the probe housing assembly. A hinge limiting component is provided between the side of the probe housing assembly and the lithological density logging instrument housing.

[0005] The exposed end of the upper arm connector is provided with a seven-core sealing component, which includes a rubber plug and a sealing pressure plate. The rubber plug has a central through hole at its center, and six axial through holes are arranged in a ring around the outside of the central through hole. The sealing pressure plate is pressed against one end of the rubber plug and is assembled and fixed with the upper arm connector. The sealing pressure plate has inlet holes at the positions corresponding to the central through hole and the axial through holes.

[0006] The aforementioned hinge limiting component includes a clearance groove on the side of the probe housing assembly and a clearance hole on the side wall of the lithology density logging instrument housing. A mounting plate sliding pin is provided in the clearance groove, and a mounting plate fixing pin is fixed in the clearance hole. A probe mounting plate is hinged to the mounting plate fixing pin, and an elongated hole is provided on the probe mounting plate, which slides in conjunction with the mounting plate sliding pin.

[0007] The aforementioned upper arm connector is embedded with a terminal block, which contains a high-voltage rubber sleeve, a high-voltage copper plug, and a high-voltage sealing pin.

[0008] The probe housing assembly has a source chamber on its side, a sealing plug on one side of the source chamber, a beryllium window and a beryllium window cover on one side of the sealing plug, and a probe cover on the outside of the probe housing assembly.

[0009] The aforementioned probe arm assembly includes a rocker arm mounted on the spring hinge assembly thrust rod. The upper and lower ends of the rocker arm are respectively hinged to the probe push arm and the push arm via connecting rods.

[0010] This invention provides an ultra-high temperature and high pressure lithology density pusher. It offers the following advantages: It improves upon existing lithology density logging tools by hinged an upper arm connector at one end of the traditional logging tool. This connector allows for an inverted design of the insulated bottle and probe housing assembly. The probe cable and control module are integrated at one end of the upper arm connector. For assembly or disassembly, the hinge limiting component can be removed, allowing direct removal of the probe housing assembly and insulated bottle, fully exposing the probe cable and control module. The structure is simple and operation is convenient. A probe cap at the lower end of the probe housing assembly provides mechanical protection, effectively preventing damage to the probe during logging operations. The hinge limiting component effectively controls the horizontal extension length and orientation of the probe housing assembly, ensuring proper contact between the probe and the wellbore, thus improving logging quality. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the main structure of the ultra-high temperature and high pressure lithological density pusher of this utility model.

[0012] Figure 2 This is a schematic diagram of the front cross-sectional structure of the ultra-high temperature and high pressure lithological density pusher of this utility model.

[0013] Figure 3 This utility model Figure 2 A magnified schematic diagram of the upper part of the structure.

[0014] Figure 4 This utility model Figure 2 A magnified schematic diagram of the lower half of the structure.

[0015] Figure 5 This utility model Figure 4 A magnified schematic diagram of the structure at position a.

[0016] Figure 6 This is a cross-sectional view of the seven-core sealing component of this utility model.

[0017] Figure 7 This utility model Figure 6 A schematic diagram of the structure viewed from below.

[0018] Figure 8 This is a front view structural diagram of the probe push arm and the push arm in the unfolded state of the ultra-high temperature and high pressure lithological density pusher of this utility model.

[0019] In the diagram: 1. High-pressure upper connector outer cylinder; 2. Lithology density logging instrument housing; 3. Upper connector wiring assembly; 4. Transmission assembly; 5. Borehole assembly; 6. Spring hinge assembly; 7. Probe arm assembly; 8. Probe assembly; 9. Upper arm; 10. Upper arm connector; 11. Thermos bottle; 12. Probe housing assembly; 13. Probe connecting screw sleeve; 14. Probe cap; 15. Seven-core sealing component; 1501. Rubber plug; 1502. Sealing plate; 1503. Center through hole; 1504. Axial through hole; 16. Mounting plate sliding pin; 17. Mounting plate fixing pin; 18. Probe mounting plate; 19. Terminal block; 20. Source chamber; 21. Sealing plug; 22. Beryllium window; 23. Beryllium window cover plate; 24. Probe cover plate; 25. Rocker arm; 26. Connecting rod; 27. Probe push arm; 28. Push arm. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example: Refer to the appendix of the instruction manual Figure 1-8As can be seen, this application specifically designs an ultra-high temperature and high pressure lithological density pusher, including a high-pressure upper connector outer cylinder 1 and a lithological density logging instrument housing 2. The high-pressure upper connector outer cylinder 1 is equipped with an upper connector wiring assembly 3. The lithological density logging instrument housing 2 is sequentially assembled and connected with a transmission assembly 4, a wellbore assembly 5, a spring hinge assembly 6, a probe arm assembly 7, and a probe assembly 8. The probe assembly 8 includes an upper arm connector 10 hinged to one end of the upper arm 9. One end of the upper arm connector 10 is connected to a thermos flask 11. One end of the upper arm connector 10 integrates a probe cable and a control module. A terminal block 19 is embedded in the upper arm connector 10, and the terminal block 19 contains a high-pressure rubber sleeve, a high-pressure copper plug, and a high-pressure sealing needle for easy wiring. A probe housing assembly 12 is fitted outside the thermos flask 11. The probe housing assembly 12 is assembled and connected to the probe connecting screw sleeve 13 on the upper arm connector 10. A probe cap 14 is installed at the lower end of the probe housing assembly 12. A hinge limiting component is provided between the side of the probe housing 12 and the lithology density logging tool housing 2. An upper arm connector 10 is hinged to one end of the upper arm 9 of the conventional logging tool. The upper arm connector 10 enables an inverted structure design for the thermos bottle 11 and the probe housing assembly 12. The probe cable and control module are integrated and installed on one end of the upper arm connector 10 and located inside the thermos bottle 11. When assembly or disassembly is required, the hinge limiting component can be removed, and the probe housing assembly 12 and the thermos bottle 11 can be directly removed to fully expose the probe cable and control module. The structure is simple and the operation is convenient. A probe cap 14 is provided at the lower end of the probe housing assembly 12 to provide mechanical protection for the probe housing assembly 12 and effectively avoid impact damage to the probe during logging operations. The setting of the hinge limiting component can effectively control the extension length and posture of the probe housing assembly 12 in the horizontal direction, ensuring the fit between the probe and the well wall and improving the logging quality.

[0022] In the specific implementation process, as a preferred setting, the exposed end of the upper arm connector 10 is provided with a seven-core sealing component 15. The seven-core sealing component 15 includes a rubber plug 1501 and a sealing pressure plate 1502. A central wire hole 1503 is opened at the center of the rubber plug 1501, and six axial wire holes 1504 are arranged in a ring around the outside of the central wire hole 1503. The sealing pressure plate 1502 is pressed against one end of the rubber plug 1501 and is assembled and fixed with the upper arm connector 9. The sealing pressure plate 1502 has wire inlet holes at the positions corresponding to the central wire hole 1503 and the axial wire holes 1504, which effectively seals the wire inlet position and improves the stability and safety of the instrument operation.

[0023] In specific implementation, as a preferred configuration, the aforementioned hinge limiting component includes a clearance groove on the side of the probe housing assembly 12 and a clearance hole on the side wall of the lithology density logging instrument housing 2. A mounting plate sliding pin 16 is provided in the clearance groove, and a mounting plate fixing pin 17 is fixed in the clearance hole. A probe mounting plate 18 is hinged to the mounting plate fixing pin 17. An elongated hole is provided on the probe mounting plate 18, and the elongated hole slides in conjunction with the mounting plate sliding pin 16. The probe mounting plate 18, the mounting plate sliding pin 16, and the mounting plate fixing pin 17... The assembly and fit can effectively ensure the posture of the probe assembly 8 after it is extended outward, improve the fit between the probe assembly 8 and the borehole sidewall, and improve the quality of logging operations. When it is necessary to disassemble the probe assembly 8, the mounting plate fixing pin 17 can be removed, and the probe housing assembly 12 and the housing body can be separated from the lithology density logging instrument housing 2. Rotate the probe connecting screw sleeve 13 and remove the probe housing assembly 12 and the thermos bottle 11 to extract the internal probe parts. The structure is simple and the disassembly and installation are relatively convenient.

[0024] In the specific implementation process, the probe housing assembly 12 is provided with a source chamber 20 on the side, a sealing plug 21 is provided on one side of the source chamber 20, a beryllium window 22 and a beryllium window 22 cover plate are provided on one side of the sealing plug 21, and a probe cover plate 24 is provided on the outside of the probe housing assembly 12.

[0025] In the specific implementation process, the aforementioned probe arm assembly 7 includes a rocker arm 25 mounted on the thrust rod of the spring hinge assembly 6. The upper and lower ends of the rocker arm 25 are respectively hinged to the probe push arm 27 and the push arm 28 via the connecting rod 26. The upper connector circuit assembly 3 drives the transmission assembly 4 and further transmits the thrust to the wellbore assembly 5 and the spring hinge assembly 6, thereby pushing the rocker arm 25 on the thrust rod of the spring hinge assembly 6 to move downward. Then, under the driving action of the connecting rod 26, the deployment and retraction control of the probe push arm 27 and the push arm 28 are realized.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An ultra-high temperature and high pressure lithological density pusher, comprising a high-pressure upper connector outer cylinder and a lithological density logging instrument housing, wherein an upper connector wiring assembly is disposed inside the high-pressure upper connector outer cylinder, and a transmission assembly, a wellbore assembly, a spring hinge assembly, a probe arm assembly, and a probe assembly are sequentially assembled and connected inside the lithological density logging instrument housing, characterized in that, The probe assembly includes an upper arm connector hinged to one end of the upper arm. One end of the upper arm connector is connected to a thermos bottle. The upper arm connector integrates a probe cable and a control module. A probe housing assembly is fitted onto the outside of the thermos bottle. The probe housing assembly is fitted with a probe connecting screw on the upper arm connector. A probe cap is installed at the lower end of the probe housing assembly. A hinge limiting component is provided between the side of the probe housing assembly and the housing of the lithology density logging instrument.

2. The ultra-high temperature and high pressure lithological density pusher according to claim 1, characterized in that, The exposed end of the upper arm connector is provided with a seven-core sealing component, which includes a rubber plug and a sealing pressure plate. The rubber plug has a central through hole at its center, and six axial through holes are arranged in a ring around the outside of the central through hole. The sealing pressure plate is pressed against one end of the rubber plug and is assembled and fixed with the upper arm connector. The sealing pressure plate has inlet holes at the positions corresponding to the central through hole and the axial through holes.

3. The ultra-high temperature and high pressure lithological density pusher according to claim 1, characterized in that, The hinge limiting component includes a clearance groove on the side of the probe housing assembly and a clearance hole on the side wall of the lithology density logging instrument housing. A mounting plate sliding pin is provided in the clearance groove, and a mounting plate fixing pin is fixed in the clearance hole. A probe mounting plate is hinged to the mounting plate fixing pin. An elongated hole is provided on the probe mounting plate, and the elongated hole slides in conjunction with the mounting plate sliding pin.

4. The ultra-high temperature and high pressure lithological density pusher according to claim 1, characterized in that, The upper arm connector is fitted with a terminal block, which contains a high-voltage rubber sleeve, a high-voltage copper plug, and a high-voltage sealing pin.

5. The ultra-high temperature and high pressure lithological density pusher according to claim 1, characterized in that, The probe housing assembly has a source chamber on its side, a sealing plug on one side of the source chamber, a beryllium window and a beryllium window cover on one side of the sealing plug, and a probe cover on the outside of the probe housing assembly.

6. The ultra-high temperature and high pressure lithological density pusher according to claim 1, characterized in that, The probe arm assembly includes a rocker arm mounted on the spring hinge assembly thrust rod. The upper and lower ends of the rocker arm are respectively hinged to the probe push arm and the push arm via connecting rods.

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