Integrated pipe feeding system for wellbore annulus plugging

Abstract

The utility model discloses an integrated pipe feeding system for wellbore annulus plugging, which comprises a pipe coiling device, a pipe feeding device, a pipe feeding device and a pipe discharging device, the discharging end of the pump skid is connected with the feeding end of the conveying pipe; the plugging material storage tank is connected with the feeding end of the pump skid; the cleaning mechanism is connected with the feeding end of the pump skid and the feeding end of the conveying pipe; and the crawling guider is mounted at the discharging end of the conveying pipe. In the pipe conveying process, the cleaning mechanism can be used for cleaning hindering foreign matters between the inner shaft and the outer shaft, and the conveying pipe can be conveniently put into an annulus position needing to be blocked. In addition, the conveying pipe is wound through the pipe winding device, the conveying pipe can be prevented from being placed in a well site in a mess, and well site management is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of oil and gas field tools technology, specifically to an integrated pipe delivery system for wellbore annulus plugging. Background Technology

[0002] When an annulus integrity issues arise between the inner and outer wellbore during oil well production, it is typically necessary to inject sealing material into the annulus to treat the annulus and restore the integrity of the entire wellbore. However, due to the pressurized annulus and the presence of foreign objects between the inner and outer wellbore, it is not easy to lower the delivery pipe for the sealing material into the annulus location requiring sealing, severely impacting the efficiency of the sealing operation. Utility Model Content

[0003] To address the aforementioned issues, this application provides an integrated pipe delivery system for wellbore annular plugging, which can efficiently lower the delivery pipe into the annular location requiring plugging, thereby improving operational efficiency.

[0004] The objective of this utility model is achieved through the following technical solution: an integrated pipe delivery system for wellbore annular plugging, comprising:

[0005] A hose reel device is used to reel in and unwind material conveying pipes;

[0006] The pump skid connects its discharge end to the inlet end of the conveying pipe.

[0007] A sealing material storage tank, which is connected to the feed end of the pump skid;

[0008] The cleaning mechanism is connected to both the feed end of the pump skid and the feed end of the conveying pipe.

[0009] A crawling guide is installed at the discharge end of the feed pipe.

[0010] Furthermore, the cleaning mechanism includes a flushing water storage tank and an inert gas storage tank; the flushing water storage tank is connected to the feed end of the pump skid, and the inert gas storage tank is connected to the feed end of the conveying pipe.

[0011] The cleaning mechanism can remove obstructions and foreign objects between the inner and outer shafts, making it easier to lower the conveying pipe into the annulus location that needs to be sealed.

[0012] The tube winding device includes a motor, a gearbox connected to the motor, a drum connected to the gearbox, and a braking device connected to the motor; the feed tube is wound onto the drum.

[0013] By using a hose reel device to wind up and unwind the conveying pipe, the conveying pipe can reach the annulus position more effectively. At the same time, winding the conveying pipe onto the hose reel device can prevent the conveying pipe from being left haphazardly in the well site, which facilitates well site management.

[0014] The tube winding device is equipped with a limit ring, and the discharge end of the conveying tube passes through the limit ring.

[0015] The limiting ring is detachably mounted on the tube winding device.

[0016] The limiting ring can limit the movement of the conveying pipe, reduce the swaying of the conveying pipe during the feeding process, and further improve the feeding efficiency.

[0017] The braking device is a hydraulic block brake.

[0018] Compared with the prior art, this application has the following beneficial effects:

[0019] This invention utilizes a cleaning mechanism during pipe delivery to remove obstructions and foreign objects between the inner and outer wellbores, facilitating the lowering of the delivery pipe into the annulus requiring sealing. Furthermore, the pipe winding device prevents the delivery pipe from being left haphazardly within the well site, simplifying well site management.

[0020] Some of the additional features of this application will be described in the following description. These additional features will become apparent to those skilled in the art upon examination of the following description and the accompanying drawings, or upon understanding the production or operation of the embodiments. The features disclosed in this application can be implemented and achieved through the practice or use of various methods, means, and combinations thereof with respect to the specific embodiments described below. Attached Figure Description

[0021] The accompanying drawings, which are provided to further illustrate this application and constitute a part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute a limitation thereof. In the drawings, the same reference numerals denote the same components.

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] Figure 2 This is a structural diagram of the tube winding device of this utility model.

[0024] The reference numerals in the above figures are as follows: 1-rinse water storage tank, 2-sealing material storage tank, 3-pump skid, 4-pipe reel device, 41-motor, 42-limiting ring, 43-brake device, 44-drum, 45-gearbox, 5-inert gas storage tank, 6-material conveying pipe, 7-well shaft. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments.

[0026] Example

[0027] like Figure 1 As shown, this embodiment discloses an integrated pipe delivery system for wellbore annular plugging, comprising: a pipe winding device 4, a pump skid 3, a plugging material storage tank 2, a cleaning mechanism, and a crawling guide. The pipe winding device 4 is used for winding and unwinding the delivery pipe 6; specifically, as shown... Figure 2 As shown, the tube winding device 4 includes a motor 41, a reduction gearbox 45 connected to the shaft of the motor 41, a drum 44 connected to the reduction gearbox 45, and a brake device 43 connected to a brake wheel mounted on the shaft of the motor 41.

[0028] In use, the conveying pipe 6 is wound onto the drum 44. The drum 44 is driven forward and reversed by the motor 41 to wind or release the conveying pipe 6. The braking device 43 assists in braking the motor 41; it can be implemented using a hydraulic block brake. A crawler guide is installed at the discharge end of the conveying pipe 6 and is used to pull the conveying pipe 6 forward. The crawler guide can be implemented using a traditional downhole traction device. In this embodiment, the conveying pipe is wound up using a pipe winding device, preventing the conveying pipe 6 from being left haphazardly in the well site and facilitating well site management.

[0029] like Figure 2 As shown, the hose reel device 4 is equipped with a limiting ring 42, and the discharge end of the conveying pipe 6 passes through the limiting ring 42. Specifically, the limiting ring 42 can be detachably installed on the motor 41 via a thread. The limiting ring 42 can limit the conveying pipe 6, reduce the swing amplitude of the conveying pipe 6 during the pipe feeding process, and enable the conveying pipe 6 to enter the well shaft 7 more smoothly, further improving the pipe feeding efficiency.

[0030] The discharge end of the pump skid 3 is connected to the inlet end of the conveying pipe 6, and the sealing material storage tank 2 is connected to the inlet end of the pump skid 3. The cleaning mechanism is connected to both the inlet end of the pump skid 3 and the inlet end of the conveying pipe 6. Specifically, the cleaning mechanism includes a flushing water storage tank 1 and an inert gas storage tank 5. When connected, a three-way valve can be installed at the inlet end of the pump skid 3. The outlet of the three-way valve is connected to the pump skid 3, while the two inlets of the three-way valve are connected to the flushing water storage tank 1 and the sealing material storage tank 2, respectively. Therefore, by adjusting the three-way valve, the flushing water storage tank 1 or the sealing material storage tank 2 can be connected to the pump skid 3, so that the pump skid 3 can pump the material in the flushing water storage tank 1 or the sealing material storage tank 2 into the well shaft 7.

[0031] Correspondingly, a three-way valve can also be connected to the inlet end of the feed pipe 6. The outlet of the three-way valve is connected to the inlet end of the feed pipe 6, and the two inlets of the three-way valve are connected to the outlet ends of the inert gas storage tank 5 and the pump skid 3, respectively. Therefore, by adjusting the three-way valve, the connection between the inert gas storage tank 5 or the pump skid 3 and the feed pipe 6 can be controlled. In this embodiment, the inert gas storage tank 5 stores nitrogen, the flushing water storage tank 1 stores clean water, and the sealing material storage tank 2 stores sealing material, such as resin.

[0032] When the conveying pipe needs to be sent into the shaft 7, the annulus of the shaft is first depressurized. Adjust the crawler guide and slowly insert the conveying pipe 6 into the annulus of the shaft 7. The pipe winding device 4 releases the conveying pipe 6. If an obstruction is encountered during the pipe sending process, adjust the three-way valve and pump clean water into the conveying pipe 6 through the pump skid 3. The annulus is flushed with clean water, and the flushing fluid returns from the casing head above the shaft and is collected in the waste liquid tank. After the returned liquid is clean, the obstruction is removed. Continue the pipe sending operation. When the conveying pipe reaches the position of the annulus to be sealed, clean water is introduced again to flush the position to be sealed. After flushing, the pump skid 3 is closed, the three-way valve is adjusted, and nitrogen is introduced into the annulus. The nitrogen is used to push the clean water in the annulus out of the shaft. The three-way valve is adjusted, the pump skid 3 is turned on, and sealing material is injected into the position of the annulus to be sealed. The pipe winding device 4 winds up the conveying pipe 6 and pulls it out.

[0033] In this embodiment, during the pipe delivery process, a cleaning mechanism can remove obstructions and foreign objects between the inner and outer wellbores, facilitating the lowering of the delivery pipe into the annulus location requiring sealing. Furthermore, this invention utilizes a pipe winding device to reel in the delivery pipe, preventing it from being left haphazardly within the well site and simplifying well site management.

[0034] It should be noted that all features disclosed in this specification, or all steps in all methods or processes disclosed, may be combined in any way, except for mutually exclusive features and / or steps.

[0035] Furthermore, the specific embodiments described above are exemplary. Those skilled in the art can devise various solutions inspired by the disclosure of this utility model, and these solutions all fall within the scope of this utility model and its protection. Those skilled in the art should understand that this utility model specification and its drawings are illustrative and not intended to limit the scope of the claims. The scope of protection of this utility model is defined by the claims and their equivalents.

Claims

1. An integrated pipe delivery system for wellbore annular plugging, characterized in that, include: A hose reel device (4) is used to reel in and unreel the material conveying pipe (6); Pump skid (3), whose discharge end is connected to the inlet end of the conveying pipe (6); A sealing material storage tank (2) is connected to the feed end of a pump skid (3); The cleaning mechanism is connected to the feed end of the pump skid (3) and the feed end of the conveying pipe (6), respectively; A crawling guide is installed at the discharge end of the feed pipe (6).

2. The integrated pipe delivery system for wellbore annular plugging according to claim 1, characterized in that, The cleaning mechanism includes a flushing water storage tank (1) and an inert gas storage tank (5); the flushing water storage tank (1) is connected to the feed end of the pump skid (3), and the inert gas storage tank (5) is connected to the feed end of the conveying pipe (6).

3. The integrated pipe delivery system for wellbore annular plugging according to claim 1 or 2, characterized in that, The tube winding device (4) includes a motor (41), a gearbox (45) connected to the motor (41), a drum (44) connected to the gearbox (45), and a brake device (43) connected to the motor (41); the feed tube (6) is wound on the drum (44).

4. The integrated pipe delivery system for wellbore annular plugging according to claim 3, characterized in that, The tube winding device (4) is provided with a limiting ring (42), and the discharge end of the material conveying pipe (6) passes through the limiting ring (42).

5. The integrated pipe delivery system for wellbore annular plugging according to claim 4, characterized in that, The limiting ring (42) is detachably mounted on the tube winding device (4).

6. The integrated pipe delivery system for wellbore annular plugging according to claim 3, characterized in that, The braking device (43) is a hydraulic block brake.

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