Intelligent automatic oil drain

Abstract

The utility model relates to a kind of intelligent automatic control oil release device, belong to the technical field of oil release tool applied to oil production pipe column, center tube, oil release hole, clamp frame, clamp frame anchoring device, sleeve, the upper joint, large-diameter smooth pipe section, small-diameter threaded pipe section, small-diameter smooth pipe section are sequentially integrated into center tube, the outer wall of the large-diameter smooth pipe section is symmetric about the axis of center tube and is communicated with the inside of center tube and is provided with oil release hole, the center tube below the oil release hole is small-diameter threaded pipe section with smaller diameter than large-diameter smooth pipe section, the outer wall of small-diameter threaded pipe section is provided with external thread, the external thread is connected with the internal thread of clamp frame, the outer wall of clamp frame is provided with two clamp frame anchoring devices, two clamp frame anchoring devices are symmetric about the axis of clamp frame, clamp frame is connected with sleeve by clamp frame anchoring device.The utility model is reliable and flexible, in the process of use, the situation that oil release device cannot be lowered into underground does not appear, and oil release and water release when pipe column is lifted.

Description

Technical Field

[0001] This invention belongs to the technical field of oil draining tools applied to oil production tubing, specifically relating to an intelligent self-controlled oil drainer. Background Technology

[0002] Currently, the commonly used oil drainers in the field are pull-up type oil drainers and tubing anchor type oil drainers. The pull-up type requires a sucker rod, which demands high skill from the operator, and if the rod detaches midway, the pump tubing must be pulled out and replaced along with it. The tubing anchor type oil drainer has the disadvantage of frequently losing its slip teeth, causing the tubing string to jam and preventing further lowering after setting. It cannot be used in wells with pumps for sand testing. Furthermore, existing oil drainers have large outer diameters, making them unsuitable for sidetracking wells. This invention addresses these common shortcomings of existing oil drainers, proposing a new solution and representing a revolutionary oil drainer product.

[0003] Currently, there are many types of oil drainers in use, but their reliability and flexibility are relatively poor. In particular, for production tubing in horizontal wells and sidetracking wells, the large outer diameter of existing oil drainers makes it impossible to lower them, leading to oil and water leakage during tubing string pulling, which causes construction difficulties and environmental pollution. At the same time, the cost of recycling and reusing existing oil drainers is high, maintenance is difficult, and most are disposable products. Summary of the Invention

[0004] To address the aforementioned problems, this invention proposes an intelligent self-controlled oil drainer, comprising a central tube, an oil drain hole, a clamp frame, a clamp frame anchoring device, and a sleeve. The central tube includes an upper connector, a large-diameter smooth tube section, a small-diameter threaded tube section, and a small-diameter smooth tube section. These components are integrally formed and connected sequentially. An oil drain hole, symmetrical about the axis of the central tube and communicating with the interior of the central tube, is provided on the outer wall of the large-diameter smooth tube section. The central tube below the oil drain hole is larger than the large-diameter smooth tube. A small-diameter threaded pipe section with a small diameter is provided. The outer wall of the small-diameter threaded pipe section is provided with an external thread, which is connected to the internal thread of the clamp frame. The inner wall diameter of the clamp frame where the internal thread is located is the same as the diameter of the small-diameter threaded pipe section. The inner wall diameter of the clamp frame above the internal thread is the same as the diameter of the large-diameter smooth pipe section. The center pipe below the small-diameter threaded pipe section is a small-diameter smooth pipe section with the same diameter as the small-diameter threaded pipe section. Two clamp frame anchoring devices are provided on the outer wall of the clamp frame. The two clamp frame anchoring devices are symmetrical about the axis of the clamp frame. The clamp frame is connected to the sleeve through the clamp frame anchoring devices.

[0005] The beneficial effects of this invention are as follows: Currently, the two most commonly used oil drainers in the field are pull-up type and rotary type. Firstly, pull-up type oil drainers require the assembly of a sucker rod, which demands high skill from the operator, and if the rod detaches midway, the pump tubing must be pulled out and replaced along with it. Rotary type oil drainers have the disadvantage that the slip teeth frequently fall off, causing the tubing string to jam and preventing further lowering after setting; they cannot be used in wells with pumps for sand exploration. Furthermore, existing oil drainers have large outer diameters, making them unsuitable for sidetracking wells. This invention solves the common shortcomings of existing oil drainers, proposes a new solution, and is an innovative oil drainer product. Attached Figure Description

[0006] Figure 1 This is a structural diagram of the intelligent self-controlled oil drain device of the present invention;

[0007] Figure 2 This is a structural diagram of the central tube of the present invention;

[0008] Figure 3 This is a structural diagram of the clamp frame anchoring device of the present invention;

[0009] Figure 4 This is a front structural view of the clamp frame anchoring device of the present invention;

[0010] Figure 5 This is a side view of the clamp frame anchoring device of the present invention;

[0011] Figure 6 This is a top view of the intelligent self-controlled oil drain device of the present invention;

[0012] Figure 7 This is a side view of the intelligent self-regulating oil drain device of the present invention;

[0013] Figure 8 This is a perspective view of the intelligent self-controlled oil drain device of the present invention;

[0014] Figure 9 This is a structural diagram of the self-controlled pin of the present invention.

[0015] The attached figures are labeled as follows: 1. Central tube; 11. Upper connector; 12. Large diameter smooth tube section; 13. Small diameter threaded tube section; 14. Small diameter smooth tube section; 2. Oil drain hole; 3. Sealing ring; 4. Clamp frame; 55. Clamp frame anchoring device; 5. First fixing hole; 7. Second fixing hole; 6. Clamp teeth; 8. Snap ring; 9. Pin; 91. First pin hole; 92. Second pin hole; 10. Self-control pin. Detailed Implementation

[0016] Example 1

[0017] A smart self-regulating oil drainer, such as Figures 1-9As shown, the device includes a central tube 1, an oil drain hole 2, a clamp frame 4, a clamp frame anchoring device 55, and a sleeve. The central tube 1 includes an upper connector 11, a large-diameter smooth tube section 12, a small-diameter threaded tube section 13, and a small-diameter smooth tube section 14. The upper connector 11, the large-diameter smooth tube section 12, the small-diameter threaded tube section 13, and the small-diameter smooth tube section 14 are integrally formed and connected in sequence. The outer wall of the large-diameter smooth tube section 12 is provided with an oil drain hole 2 that is symmetrical about the axis of the central tube 1 and communicates with the interior of the central tube 1. The central tube 1 below the oil drain hole 2 is a small-diameter threaded tube with a diameter smaller than that of the large-diameter smooth tube section 12. Section 13, the outer wall of the small-diameter threaded pipe section 13 is provided with external threads, the external threads are connected to the internal threads of the clamp frame 4, the inner wall diameter of the clamp frame 4 where the internal threads are located is the same as the diameter of the small-diameter threaded pipe section 13, the inner wall diameter of the clamp frame 4 above the internal threads is the same as the diameter of the large-diameter smooth pipe section 12, the central pipe 1 below the small-diameter threaded pipe section 13 is a small-diameter smooth pipe section 14 with the same diameter as the small-diameter threaded pipe section 13, the outer wall of the clamp frame 4 is provided with two clamp frame anchoring devices 55, the two clamp frame anchoring devices 55 are symmetrical about the axis of the clamp frame 4, the clamp frame 4 is connected to the sleeve through the clamp frame anchoring devices 55.

[0018] The inner wall of the upper connector 11 is provided with an internal thread.

[0019] It also includes a sealing ring 3. A circular groove is provided on the large-diameter smooth pipe section 12 above the oil drain hole 2, and a sealing ring 3 is provided on the circular groove.

[0020] A circular groove is provided on the large-diameter smooth pipe section 12 below the oil drain hole 2, and a sealing ring 3 is provided on the circular groove.

[0021] The clamp frame anchoring device 55 includes a first fixing hole 5, a second fixing hole 7, clamp teeth 6, a retaining ring 8, a pin 9, and a self-control pin 10. One end of the pin 9 passes through the first pin hole 91, the retaining ring 8, and the second pin hole 92 at one end of the clamp teeth 6 in sequence. The other end of the pin 9 is inserted into the clamp frame 4. The pin 9 is movably connected to the first pin hole 91, the retaining ring 8, the second pin hole 92, and the clamp frame 4. The other end of the clamp teeth 6 is provided with the first fixing hole 5, and the clamp frame 4 is provided with the second fixing hole 7.

[0022] It also includes a self-control pin 10, which passes through the second fixing hole 7 and the first fixing hole 5 in sequence.

[0023] The self-controlling pin 10 is made of a novel composite material that dissolves in water or oil. The self-controlling pin 10 is a novel composite material that dissolves in water / oil at certain temperatures; many similar products are available on the market, such as soluble bridge plugs and temporary plugging balls.

[0024] The retaining ring 8 is formed by winding a metal rod around the pin 9 several times. One end of the retaining ring 8 is connected to the small-diameter smooth tube section 14, and the other end of the retaining ring 8 is connected to the body of the clamp frame anchoring device 55.

[0025] It includes two oil drain holes 2, which are symmetrical about the axis of the central tube 1.

[0026] Two oil drain holes 2 are opened on the central tube 1. The sealing ring 3 is installed on the central tube 1. The clamp frame 4 is connected to the central tube 1 by thread. The clamp teeth 6 are installed in the clamp frame 4. The snap ring 8 is fixed in the clamp teeth 6 by the pin 9. The self-control pin 10 passes through the second fixing hole 7 and the first fixing hole 5 to fix the clamp teeth 6 in the clamp frame 4.

[0027] To achieve the effect of oil drainage by rotating the tubing string forward, this invention mainly employs a self-regulating pin 10 that dissolves upon contact with the well fluid, releasing the jaws 6. The jaws 6 then open and anchor under the action of the retaining spring 8. When oil drainage is required, the tubing string is rotated forward, the jaws 6 anchor to the casing, and the tubing string clamp frame 4 continues to rotate downwards, opening the drain hole 2, successfully draining the oil and completing the drainage process. This invention uses a soluble material to control the jaw opening time. The sealing ring 3 serves to seal the tubing string during pressure testing.

[0028] Usage process: The self-control pin 10 will generally dissolve within 24 hours. At this time, the clamp frame anchoring device 55 opens and anchors under the action of the snap ring 8. The clamp teeth 6 are anchored on the sleeve. The center tube 1 is rotated forward, and the clamp frame 4 is anchored to the sleeve through the clamp teeth 6. The clamp frame 4 remains stationary. The center tube 1 moves upward, and the oil drain hole 2 is exposed outside the clamp frame 4. The oil drain hole 2 is opened, and the oil drain is successful, completing the oil drain process.

[0029] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An intelligent self-regulating oil drainer, characterized in that, The system includes a central tube (1), an oil drain hole (2), a clamp frame (4), a clamp frame anchoring device (55), and a sleeve. The central tube (1) includes an upper connector (11), a large-diameter smooth tube section (12), a small-diameter threaded tube section (13), and a small-diameter smooth tube section (14). The upper connector (11), the large-diameter smooth tube section (12), the small-diameter threaded tube section (13), and the small-diameter smooth tube section (14) are integrally formed and connected in sequence. An oil drain hole (2) is provided on the outer wall of the large-diameter smooth tube section (12) symmetrical about the axis of the central tube (1) and communicating with the interior of the central tube (1). The central tube (1) below the oil drain hole (2) is a small-diameter threaded tube section (12) with a smaller diameter than the large-diameter smooth tube section (12). The outer wall of the small-diameter threaded pipe section (13) is provided with an external thread, which is connected to the internal thread of the clamp frame (4). The inner wall diameter of the clamp frame (4) where the internal thread is located is the same as the diameter of the small-diameter threaded pipe section (13). The inner wall diameter of the clamp frame (4) above the internal thread is the same as the diameter of the large-diameter smooth pipe section (12). The center pipe (1) below the small-diameter threaded pipe section (13) is a small-diameter smooth pipe section (14) with the same diameter as the small-diameter threaded pipe section (13). Two clamp frame anchoring devices (55) are provided on the outer wall of the clamp frame (4). The two clamp frame anchoring devices (55) are symmetrical about the axis of the clamp frame (4). The clamp frame (4) is connected to the sleeve through the clamp frame anchoring devices (55). The clamp frame anchoring device (55) includes a first fixing hole (5), a second fixing hole (7), clamp teeth (6), a retaining ring (8), a pin (9), and a self-control pin (10). One end of the pin (9) passes through the first pin hole (91), the retaining ring (8), and the second pin hole (92) set at one end of the clamp teeth (6). The other end of the pin (9) is inserted into the clamp frame (4). The pin (9) is movably connected to the first pin hole (91), the retaining ring (8), the second pin hole (92), and the clamp frame (4). The other end of the clamp teeth (6) is provided with the first fixing hole (5), and the clamp frame (4) is provided with the second fixing hole (7). It also includes a self-control pin (10), which passes through the second fixing hole (7) and the first fixing hole (5) in sequence; The self-control pin (10) is made of a new composite material that is soluble in water or oil.

2. The intelligent self-regulating oil drainer as described in claim 1, characterized in that, The inner wall of the upper connector (11) is provided with an internal thread.

3. The intelligent self-regulating oil drainer as described in claim 1, characterized in that, It also includes a sealing ring (3), and a circular groove is provided on the large-diameter smooth pipe section (12) above the oil drain hole (2), and a sealing ring (3) is provided on the circular groove.

4. The intelligent self-regulating oil drainer as described in claim 1, characterized in that, A circular groove is provided on the large-diameter smooth pipe section (12) below the oil drain hole (2), and a sealing ring (3) is provided on the circular groove.

5. The intelligent self-regulating oil drainer as described in claim 1, characterized in that, The snap ring (8) is formed by winding a metal rod around the pin (9) several times. One end of the snap ring (8) is connected to the small diameter smooth tube section (14), and the other end of the snap ring (8) is connected to the body of the clamp frame anchoring device (55).

6. The intelligent self-regulating oil drainer as described in claim 1, characterized in that, It includes two drain holes (2), which are symmetrical about the axis of the central tube (1).

Images