A logging instrument drill pipe conveyance pump-out device

Abstract

The utility model discloses a logging instrument drill rod conveying pump export device, including protection drill rod, ejection mechanism and chucking mechanism, one end of protection drill rod is used for via a plurality of drill rod sub and top drive connection, top drive is used for with the output end connection of mud conveying device, the fixed thrust plate in protection drill rod has, be equipped with guide hole on the thrust plate, the ejection mechanism includes piston, connecting rod, connecting block and first elastic part, the chucking mechanism is used for when the connecting block reaches the preset position, chucking connecting block, the utility model discloses through mud drive ejection mechanism and chucking mechanism, has realized logging instrument under the protection of protection drill rod and gone into the well, in logging instrument going into the well process, avoided logging instrument and the direct contact of well wall, reduced logging instrument damage's risk, reduced logging cost and operation risk.

Description

Technical Field

[0001] This utility model relates to the field of oil well logging equipment transportation, specifically to a well logging instrument drill pipe transportation pump device. Background Technology

[0002] With the advancement of technology, the field of drilling technology has undergone tremendous changes. Horizontal drilling technology, as an important branch of this technology, has achieved remarkable development results. Due to its outstanding advantages in increasing crude oil production and improving oil recovery rates, it has been widely used in the oil extraction sector. The development of this technology has not only boosted the oil industry's production capacity but also made significant contributions to the stability of global energy supply. It has enabled the effective development of previously difficult-to-exploit oil reservoirs, expanded the scope of oil resource utilization, and also driven the coordinated development of related industries, promoting the prosperity of the entire oil industry chain. With the popularization of horizontal drilling technology, the demand for horizontal well logging technology, which is closely related to it, is also increasing, becoming a key link in ensuring the smooth operation of oil extraction.

[0003] In traditional well logging operations, two main methods are typically used to lower the logging instrument into the well. One method involves using a cable, where the instrument is slowly lowered into the well by the cable's traction; the other method uses drill pipe, where the instrument is fixed to the drill pipe and lowered into the well along with the drill pipe. These two methods have been widely used for a long time and are relatively mature and common techniques in well logging operations. The cable-based method is relatively flexible and can adapt to variations in well depth; the drill pipe method is more suitable for horizontal wells. They play important roles in their respective applicable scenarios, providing fundamental support for well logging operations.

[0004] However, existing methods for running logging instruments have significant drawbacks. During the running process, the logging instruments inevitably come into direct contact with the wellbore. Due to the rough surface of the wellbore and the complex and variable downhole environment, this contact can easily damage the logging instruments. Once the logging instruments are damaged, it will not only interfere with the normal progress of logging operations but also lead to a significant increase in logging costs and operational risks. Utility Model Content

[0005] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a well logging instrument drill pipe delivery pump device to solve the above-mentioned technical problems in the prior art.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: This utility model provides a drilling pipe delivery pump device for logging instruments, comprising: A protective drill rod, one end of which is used to connect to a top drive via several drill rod short sections, the top drive being used to connect to the output end of a mud conveying device, and a thrust plate being fixed inside the protective drill rod, with guide holes provided on the thrust plate; The ejection mechanism includes a piston, a connecting rod, a connecting block, and a first elastic element. The piston is slidably connected to the protective drill pipe. The connecting rod is slidably inserted into the guide hole, with one end fixedly connected to the piston and the other end fixedly connected to the connecting block. The connecting block is used to fix the logging instrument. The two ends of the first elastic element are respectively connected to the piston and the thrust plate. A clamping mechanism is used to clamp the connecting block when the connecting block reaches a preset position.

[0007] Preferably, the first elastic element is a first spring, which is sleeved on the connecting rod. One end of the first spring abuts against the piston, and the other end of the first spring abuts against the thrust plate.

[0008] Preferably, the outer side wall of the protective drill rod is provided with mounting holes; The clamping mechanism includes a sleeve, a wedge block, a plug block, and a second elastic element. The sleeve is fixed in the mounting hole, the wedge block is slidably disposed in the sleeve, and the inclined end of the wedge block can extend into the protective drill rod. The plug block is fixed at the end of the sleeve away from the drill rod. One end of the second elastic element is connected to the wedge block, and the other end of the second elastic element is connected to the plug block.

[0009] Preferably, the outer wall of the connecting block has an inclined surface that mates with the wedge block.

[0010] Preferably, the second elastic element is a second spring, one end of which is connected to the wedge block and the other end of which is connected to the block.

[0011] Preferably, the plug is connected to the sleeve via a connecting pin, and the other end of the protective drill rod has an anti-detachment protrusion formed inside to prevent the connecting block from detaching from the protective drill rod.

[0012] Preferably, the outer end face of the connecting pin has a slot.

[0013] Preferably, the slot is a slotted slot or a cross slot.

[0014] Preferably, it further includes a protective cover, which is hinged to the protective drill rod and used to cover the other end of the protective drill rod.

[0015] Preferably, the protective cover is hinged to the other end of the protective drill rod via a pivot, and the logging instrument drill rod delivery pump device further includes a torsion spring, which is sleeved on the pivot, with one end of the torsion spring connected to the protective drill rod and the other end of the torsion spring connected to the protective cover.

[0016] Compared with existing technologies, the beneficial effects of the logging instrument drill pipe delivery and pumping device provided by this utility model are as follows: This logging instrument drill pipe delivery and pumping device, through a mud-driven ejection mechanism and a clamping mechanism, enables the logging instrument to be lowered into the well under the protection of the protective drill pipe. During the process of lowering the logging instrument into the well, direct contact between the logging instrument and the well wall is avoided, reducing the risk of damage to the logging instrument and decreasing logging costs and operational risks. After the logging operation is completed, the logging instrument can be easily retracted into the protective drill pipe, further protecting the logging instrument. This design, compared with traditional logging instrument lowering methods, has higher reliability and safety, and is an effective improvement over existing technologies. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the logging instrument drill pipe delivery pump device provided in one embodiment of the present invention when the logging instrument is inside the protective drill pipe; Figure 2 yes Figure 1 A schematic diagram of the logging instrument drill pipe delivery pump device in the diagram when the logging instrument extends out of the protective drill pipe; Figure 3 yes Figure 2 A magnified view of a portion of region A in the middle; Explanation of reference numerals in the attached drawings: 1-protective drill pipe, 11-thrust plate, 12-anti-detachment protrusion, 13-protective cover, 2-ejection mechanism, 21-piston, 22-connecting rod, 23-connecting block, 24-first elastic element, 3-clamping mechanism, 31-sleeve, 32-wedge block, 33-plug block, 34-second elastic element, 35-connecting pin, 4-logging instrument, 5-well wall. Detailed Implementation

[0018] The technical solutions in the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. The described embodiments are only possible technical implementations of the present invention, but are not limited thereto. Other embodiments obtained by those skilled in the art in conjunction with the embodiments of the present invention without creative effort are also within the protection scope of the present invention.

[0019] Please refer to Figures 1-3 This application mainly adopts mud-driven logging instrument 4 to enter and exit the protective drill pipe 1, which achieves the effect of avoiding direct contact between logging instrument 4 and well wall 5 during the lowering and raising process, and reducing the risk of damage. The following is a further detailed description of this application.

[0020] The logging instrument drill pipe delivery and pumping device provided in this application includes a protective drill pipe 1, a push-out mechanism 2, and a clamping mechanism 3. One end of the protective drill pipe 1 is connected to a top drive (not shown) via several drill pipe sections. The top drive is connected to the output end of a mud delivery device (not shown). The push-out mechanism 2 and the clamping mechanism 3 are disposed inside the protective drill pipe 1. Mud is introduced into the protective drill pipe 1 through the mud delivery device to drive the push-out mechanism 2, causing the logging instrument 4 to extend out of the protective drill pipe 1. The clamping mechanism 3 clamps the logging instrument 4 when it reaches a preset position, keeping the logging instrument 4 in the extended state. This device avoids direct contact between the logging instrument 4 and the wellbore wall 5 during the well's insertion process, thus protecting the logging instrument 4 and reducing logging costs and operational risks.

[0021] For details, please refer to Figures 1-3 A thrust plate 11 is fixed inside the protective drill pipe 1, and a guide hole is provided on the thrust plate 11. The protective drill pipe 1 is usually made of high-strength metal materials, such as alloy steel, to ensure sufficient strength and corrosion resistance in the harsh downhole environment. The thrust plate 11 is generally fixed inside the protective drill pipe 1 by welding, but can also be connected by bolts for easy disassembly and maintenance. The function of the guide hole is to provide a sliding channel for the connecting rod 22. Its inner wall should be smooth and can be treated by grinding or polishing to reduce the friction when the connecting rod 22 slides. In addition to providing a guide hole, a guide sleeve can also be installed on the thrust plate 11. The guide sleeve can be made of wear-resistant copper alloy material to further improve the guiding effect and wear resistance.

[0022] Please refer to Figures 1-3The ejection mechanism 2 includes a piston 21, a connecting rod 22, a connecting block 23, and a first elastic element 24. The piston 21 is slidably connected to the protective drill pipe 1 and is typically cylindrical in shape, with a sealing ring, such as a rubber sealing ring, on its outer circumference to ensure a tight seal between the piston 21 and the inner wall of the protective drill pipe 1. The connecting rod 22 is slidably inserted into the guide hole, with one end fixedly connected to the piston 21 and the other end fixedly connected to the connecting block 23. The connecting rod 22 is generally a metal rod, such as a stainless steel rod, and its surface should be smooth to reduce friction with the guide hole. The connecting block 23 is used to fix the logging instrument 4 and can be connected by bolts, snap-fit ​​connections, etc., to ensure that the logging instrument 4 is securely installed on the connecting block 23. The two ends of the first elastic element 24 are connected to the piston 21 and the thrust plate 11, respectively. The first elastic element 24 serves to reset the piston 21 and the logging instrument 4 after the mud pressure disappears. The first elastic element 24 can be a first spring, which is sleeved on the connecting rod 22. One end of the first spring abuts against the piston 21, and the other end abuts against the thrust plate 11. Of course, the first elastic element 24 can also be replaced by other elastic components such as rubber elastomers. When mud enters the protective drill pipe 1 and pushes the piston 21, the piston 21 compresses the first spring, causing the connecting block 23 and the logging instrument 4 to move outward.

[0023] Please refer to Figures 1-3 The clamping mechanism 3 is used to clamp the connecting block 23 when it reaches a preset position. An installation hole is provided on the outer wall of the protective drill rod 1. The clamping mechanism 3 includes a sleeve 31, a wedge block 32, a plug block 33, and a second elastic element 34. The sleeve 31 is fixed in the installation hole, which can be fixed by welding or interference fit. The wedge block 32 is slidably disposed on the sleeve 31, and its inclined end can extend into the protective drill rod 1. The wedge block 32 is generally made of high-strength metal material, and its inclined surface is precision machined to ensure the fitting accuracy with the connecting block 23. The plug block 33 is fixed to the end of the sleeve 31 away from the drill rod. One end of the second elastic element 34 is connected to the wedge block 32, and the other end of the second elastic element 34 is connected to the plug block 33. The second elastic element 34 can be a second spring, with one end connected to the wedge block 32 and the other end connected to the plug block 33. When the connecting block 23 moves to the preset position with the piston 21, the inclined surface of the wedge block 32 cooperates with the connecting block 23. Under the action of the second spring, the wedge block 32 clamps the connecting block 23, keeping the logging instrument 4 in the extended state for logging operations.

[0024] Please refer to Figures 1-3The outer wall of the connecting block 23 has a beveled surface that mates with the wedge block 32. This beveled surface design allows the wedge block 32 to better clamp the connecting block 23, improving the stability of the clamping. The plug 33 is connected to the sleeve 31 via a connecting pin 35. The other end of the protective drill rod 1 has an anti-dislodgement protrusion 12 to prevent the connecting block 23 from disengaging from the protective drill rod 1. The material strength of the connecting pin 35 is a preset value; it will break when the shear force on the connecting pin 35 exceeds the preset value. The outer end face of the connecting pin 35 has a slot, which can be a slotted slot or a cross slot, to facilitate the installation of the connecting pin 35. It can be installed and removed using corresponding screwdrivers or other tools. When the logging device needs to be pulled up, mud at a second preset pressure is introduced into the protective drill pipe 1. Due to the presence of the anti-detachment protrusion 12, the connecting block 23 will not detach from the protective drill pipe 1. Moreover, the second preset pressure is much greater than the first preset pressure, which can push the wedge block 32 to move outward. The wedge block 32 acts on the plug block 33, and the force can exceed the shear strength of the connecting pin 35, causing the connecting pin 35 to break. Then, the mud is stopped being introduced. Under the action of the first elastic element 24, the logging instrument 4 retracts into the protective drill pipe 1, thereby protecting the logging instrument 4 during the lifting process.

[0025] Please refer to Figure 1 and Figure 2 The device also includes a protective cover 13, which is hinged to the protective drill pipe 1 and used to cover the other end of the protective drill pipe 1. The protective cover 13 is hinged to the other end of the protective drill pipe 1 via a pivot. The device also includes a torsion spring, which is sleeved on the pivot. One end of the torsion spring is connected to the protective drill pipe 1, and the other end is connected to the protective cover 13. The protective cover 13 is generally made of a metal material, such as aluminum alloy, and has a certain strength and lightness. When the logging instrument 4 is not extended, the protective cover 13 is closed at the other end of the protective drill pipe 1 under the action of the torsion spring, further protecting the logging instrument 4 and preventing debris from entering the protective drill pipe 1. When the logging instrument 4 is extended, the protective cover 13 is pushed open; when the logging instrument 4 is retracted, the protective cover 13 closes again under the torsion of the torsion spring.

[0026] The implementation principle of this embodiment is as follows: The logging instrument drill pipe delivery pump device, through the mud-driven ejection mechanism 2 and the clamping mechanism 3, enables the logging instrument 4 to be lowered into the well under the protection of the protective drill pipe 1. During the lowering process of the logging instrument 4, direct contact between the logging instrument 4 and the well wall 5 is avoided, reducing the risk of damage to the logging instrument 4 and decreasing logging costs and operational risks. After the logging operation is completed, the logging instrument 4 can be easily retracted into the protective drill pipe 1 for further protection. Compared with traditional logging instrument lowering methods, this design has higher reliability and safety, and is an effective improvement over existing technology.

[0027] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A logging instrument drill pipe delivery pump device, characterized in that, include: A protective drill rod, one end of which is used to connect to a top drive via several drill rod short sections, the top drive being used to connect to the output end of a mud conveying device, and a thrust plate being fixed inside the protective drill rod, with guide holes provided on the thrust plate; The ejection mechanism includes a piston, a connecting rod, a connecting block, and a first elastic element. The piston is slidably connected to the protective drill pipe. The connecting rod is slidably inserted into the guide hole, with one end fixedly connected to the piston and the other end fixedly connected to the connecting block. The connecting block is used to fix the logging instrument. The two ends of the first elastic element are respectively connected to the piston and the thrust plate. A clamping mechanism is used to clamp the connecting block when the connecting block reaches a preset position.

2. The logging instrument drill pipe delivery pump device according to claim 1, characterized in that, The first elastic element is a first spring, which is sleeved on the connecting rod. One end of the first spring abuts against the piston, and the other end of the first spring abuts against the thrust plate.

3. The logging instrument drill pipe delivery pump device according to claim 1, characterized in that, The protective drill rod has mounting holes on its outer side wall; The clamping mechanism includes a sleeve, a wedge block, a plug block, and a second elastic element. The sleeve is fixed in the mounting hole, the wedge block is slidably disposed in the sleeve, and the inclined end of the wedge block can extend into the protective drill rod. The plug block is fixed at the end of the sleeve away from the drill rod. One end of the second elastic element is connected to the wedge block, and the other end of the second elastic element is connected to the plug block.

4. The logging instrument drill pipe delivery pump device according to claim 3, characterized in that, The outer wall of the connecting block has an inclined surface that mates with the wedge block.

5. The logging instrument drill pipe delivery pump device according to claim 3, characterized in that, The second elastic element is a second spring, one end of which is connected to the wedge block and the other end of which is connected to the block.

6. The logging instrument drill pipe delivery pump device according to claim 3, characterized in that, The plug is connected to the sleeve via a connecting pin, and the other end of the protective drill rod has an anti-detachment protrusion to prevent the connecting block from detaching from the protective drill rod.

7. The logging instrument drill pipe delivery pump device according to claim 6, characterized in that, The outer end face of the connecting pin has a slot.

8. The logging instrument drill pipe delivery pump device according to claim 7, characterized in that, The slot is either a slotted slot or a cross-shaped slot.

9. The logging instrument drill pipe delivery pump device according to claim 1, characterized in that, It also includes a protective cap that is hinged to the protective drill rod and is used to cover the other end of the protective drill rod.

10. The logging instrument drill pipe delivery pump device according to claim 9, characterized in that, The protective cover is hinged to the other end of the protective drill rod via a pivot. The logging instrument drill rod delivery pump device also includes a torsion spring, which is sleeved on the pivot. One end of the torsion spring is connected to the protective drill rod, and the other end of the torsion spring is connected to the protective cover.

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