Coiled tubing fluid filter

Abstract

The utility model relates to the technical field of oil well operation tools, in particular to a coiled tubing fluid filter which comprises a box body, a barrel body penetrating through the box body, a liquid inlet pipe with the bottom end communicated with the interior of the barrel body, a slag discharging opening with the top end communicated with the interior of the barrel body and a liquid discharging pipe with one end communicated with the box body. An opening communicated with the box body is formed in the bottom of the barrel body, a filter screen is arranged in the opening, a conveying anti-blocking assembly is arranged in the barrel body, and the liquid inlet pipe and the slag discharging opening are arranged close to the two ends of the barrel body respectively; according to the oil filter, the filtering speed during filtering can be effectively increased, the situation that small-particle chippings are accumulated and cannot be filtered out is prevented, and the accumulated small-particle chippings are convenient to clean.

Description

Technical Field

[0001] The utility model relates to the technical field of oil well operation tools, in particular to a continuous oil tubing fluid filter. Background Art

[0002] With the large-scale application of coiled tubing fracturing and drilling and milling operations, the importance of water supply quality for continuous construction has become increasingly prominent. Impurities in the water can easily clog or even damage tubing or tools, interrupting fracturing or drilling operations, severely impacting progress, increasing construction costs, and posing safety risks. The inability to effectively control water supply quality is a key issue.

[0003] The invention application with publication number CN112169411A discloses a coiled tubing fluid filtration device installed between a coiled tubing pump truck and a liquid supply tank. The device comprises a suspension tube and a filter screen. A filter element is installed inside the suspension tube, and the filter screen is located outside the suspension tube. The filter screen and filter element filter the upstream water of the coiled tubing. The filtration device has two filters installed at the same radial position, which means that the water flow is filtered twice along the radial direction. However, this filtration method is prone to slow filtration speed during use. After long-term use, small particles of debris accumulate in the filter element, making it impossible to filter out oil. Cleaning the accumulated small particles of debris is quite difficult. Utility Model Content

[0004] The purpose of the present invention is to address the above-mentioned deficiencies and provide a continuous oil pipe fluid filter, which can effectively improve the filtration speed during filtration, prevent the accumulation of small particles and debris and make it impossible to filter out the oil, and facilitate the cleaning of the accumulated small particles and debris.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A coiled tubing fluid filter comprises a box body, a cylinder body penetrating the box body, a liquid inlet pipe connected to the inside of the cylinder body at the bottom end, a slag discharge port connected to the inside of the cylinder body at the top end, a liquid discharge pipe connected to the box body at one end, both ends of the cylinder body are sealed, an opening connected to the box body is provided at the bottom of the cylinder body, a filter screen is provided in the opening, a conveying anti-blocking component is provided in the cylinder body, and the liquid inlet pipe and the slag discharge port are respectively provided near the two ends of the cylinder body.

[0007] Furthermore, the conveying anti-blocking component includes a conveying shaft rotatably connected to the cylinder body, a conveying vane arranged on the conveying shaft, and a motor fixed at one end of the cylinder body. The output shaft of the motor is connected to the conveying shaft through a coupling. The conveying shaft, the conveying vane and the inner wall of the cylinder body together form a spiral conveying channel. The filter screen is arranged at the bottom of the spiral conveying channel. When the conveying shaft drives the conveying vane to rotate, the conveying vane scrapes along the upper surface of the filter screen.

[0008] Furthermore, the liquid inlet pipe and the liquid discharge pipe are respectively provided with a liquid inlet flange and a liquid outlet flange.

[0009] Furthermore, the slag discharge port is provided with a slag discharge pipe.

[0010] Furthermore, it also includes a controller, and the conveying anti-blocking component is electrically connected to the controller.

[0011] The beneficial effects of the utility model are:

[0012] In actual application, the continuous oil tubing pump truck and the liquid supply tank are connected through the liquid inlet pipe and the liquid discharge pipe, and the fluid is injected into the cylinder through the liquid inlet pipe. During the flow of the fluid along the cylinder, the liquid passes through the filter screen and flows into the box body and flows out from the liquid discharge pipe, and the small particles in the fluid are filtered by the filter screen and then transported to the slag discharge port by the conveying anti-blocking component for discharge; in the process of conveying small particles of debris by the conveying anti-blocking component, it can not only ensure the filtration speed during filtration, but also prevent the filter screen from being blocked; the utility model can effectively improve the filtration speed during filtration, prevent the accumulation of small particles of debris and the inability to filter out oil, and facilitate the cleaning of accumulated small particles of debris. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a bottom view of the utility model;

[0015] Figure 3 yes Figure 2 Cross-sectional view at AA in the middle;

[0016] Reference numerals: housing 1 ; cylinder 2 ; liquid inlet pipe 3 ; liquid inlet flange 31 ; slag outlet 4 ; liquid discharge pipe 5 ; liquid outlet flange 51 ; filter screen 6 ; conveying anti-blocking assembly 7 ; conveying shaft 71 ; conveying rotor 72 ; motor 73 . DETAILED DESCRIPTION

[0017] like Figure 1 、 Figure 2 and Figure 3 As shown, the coiled tubing fluid filter includes a box body 1, a cylinder body 2 passing through the box body 1, a liquid inlet pipe 3 connected to the inside of the cylinder body 2 at the bottom end, a slag discharge port 4 connected to the inside of the cylinder body 2 at the top end, and a liquid discharge pipe 5 connected to the box body 1 at one end. The two ends of the cylinder body 2 are sealed, and an opening connected to the box body 1 is provided at the bottom of the cylinder body 2, and a filter screen 6 is provided in the opening. A conveying anti-blocking component 7 is provided in the cylinder body 2, and the liquid inlet pipe 3 and the slag discharge port 4 are respectively provided near the two ends of the cylinder body 2.

[0018] During use, the continuous oil tubing pump truck and the liquid supply tank are connected through the liquid inlet pipe 3 and the liquid discharge pipe 5, and the fluid is injected into the cylinder 2 through the liquid inlet pipe 3. During the flow of the fluid along the cylinder 2, the liquid passes through the filter screen 6 and flows into the box body 1 and flows out from the liquid discharge pipe 5. The small particles of debris in the fluid are filtered by the filter screen 6 and then transported to the slag discharge port 4 for discharge by the conveying anti-blocking component 7. In the process of conveying small particles of debris by the conveying anti-blocking component 7, it can not only ensure the filtration speed during filtration, but also prevent the filter screen 6 from being blocked. The utility model can effectively improve the filtration speed during filtration, prevent the accumulation of small particles of debris and the inability to filter out oil, and facilitate the cleaning of accumulated small particles of debris.

[0019] like Figure 1 、 Figure 2 and Figure 3 As shown, the conveying anti-blocking component 7 includes a conveying shaft 71 rotatably connected to the cylinder 2, a conveying rotor 72 provided on the conveying shaft 71, and a motor 73 fixed at one end of the cylinder 2. The output shaft of the motor 73 is connected to the conveying shaft 71 through a coupling. The conveying shaft 71, the conveying rotor 72 and the inner side wall of the cylinder 2 are surrounded to form a spiral conveying channel. The filter screen 6 is arranged at the bottom of the spiral conveying channel. During the rotation of the conveying rotor 72 driven by the conveying shaft 71, the conveying rotor 72 scrapes along the upper surface of the filter screen 6; in this embodiment, the fluid is injected into the cylinder 2 through the liquid inlet pipe 3. During the flow of the fluid along the cylinder 2, the liquid passes through the filter screen 6 and flows into the box body 1 and flows out from the discharge pipe 5, while the small particles and debris in the fluid are filtered by the filter screen 6. During the rotation of the conveying rotor 72 driven by the motor 73, the small particles and debris filtered out by the filter screen 6 are conveyed to the slag discharge port 4 for discharge.

[0020] like Figure 1 、 Figure 2 and Figure 3 As shown, the liquid inlet pipe 3 and the liquid outlet pipe 5 are respectively provided with a liquid inlet flange 31 and a liquid outlet flange 51; in this embodiment, the liquid inlet flange 31 and the liquid outlet flange 51 make it easier to connect the liquid inlet pipe 3 and the liquid outlet pipe 5 to the coiled tubing pump truck and the liquid supply tank.

[0021] like Figure 1 、 Figure 2 and Figure 3 As shown, the slag discharge port 4 is provided with a slag discharge pipe; in this embodiment, the discharge of small particle debris is more easily controlled through the slag discharge pipe.

[0022] like Figure 1 、 Figure 2 and Figure 3 As shown, a controller is also included, and the conveying anti-blocking component 7 is electrically connected to the controller; in this embodiment, the conveying anti-blocking component 7 can be controlled to be opened or closed by the controller.

[0023] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described, or replace them with similar methods, without departing from the scope defined by the spirit of the present invention.

Claims

1. Coiled tubing fluid filter, characterized by: The invention comprises a box body (1), a cylinder body (2) passing through the box body (1), a liquid inlet pipe (3) connected to the inside of the cylinder body (2), a top end connected to a slag discharge port (4) inside the cylinder body (2), and a liquid discharge pipe (5) connected to the box body (1) at one end. Both ends of the cylinder body (2) are sealed. An opening connected to the box body (1) is provided at the bottom of the cylinder body (2), and a filter screen (6) is provided in the opening. A conveying anti-blocking component (7) is provided in the cylinder body (2). The liquid inlet pipe (3) and the slag discharge port (4) are respectively provided near the two ends of the cylinder body (2).

2. The coiled tubing fluid filter according to claim 1, characterized in that: The conveying anti-blocking component (7) comprises a conveying shaft (71) rotatably connected to the cylinder (2), a conveying vane (72) arranged on the conveying shaft (71), and a motor (73) fixed to one end of the cylinder (2). The output shaft of the motor (73) is connected to the conveying shaft (71) through a coupling. The conveying shaft (71), the conveying vane (72) and the inner wall of the cylinder (2) form a spiral conveying channel. The filter screen (6) is arranged at the bottom of the spiral conveying channel.

3. The coiled tubing fluid filter according to claim 1, characterized in that: The liquid inlet pipe (3) and the liquid outlet pipe (5) are respectively provided with a liquid inlet flange (31) and a liquid outlet flange (51).

4. The coiled tubing fluid filter according to claim 1, characterized in that: It also includes a controller, and the delivery anti-blocking component (7) is electrically connected to the controller.

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