Drilling fluid plugging performance evaluation instrument

Abstract

The utility model relates to the technical field of drilling fluid plugging performance testing, and discloses a drilling fluid plugging performance evaluation instrument which comprises a tank body, an installation assembly is arranged at the bottom of the tank body, a connecting assembly is arranged in the installation assembly, the installation assembly is composed of a connecting unit and a fixing unit, the connecting unit is located at the bottom of the tank body, and the fixing unit is located at the bottom of the tank body. The fixing unit is located on the outer wall of the tank body. The connecting unit comprises a mounting base, a limiting ring, a fixing ring, a movable rod, a shell, a bent plate and a movable plate. According to the drilling fluid plugging performance evaluation instrument, a limiting ring and a handle are arranged, a mounting seat is moved, so that the mounting seat slides on the outer wall of a tank body until the top of the mounting seat abuts against the bottom of a fixed ring, then a bent plate is swung, so that the outer wall of a moving plate abuts against the outer wall of the mounting seat, and a threaded rod is rotated by rotating the handle; and at the moment, the movable plate can move under the action of threads until the outer wall of the movable plate abuts against the outer wall of the limiting ring, and therefore fixing between the tank body and the mounting base is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling fluid plugging performance testing, in particular to a drilling fluid plugging performance evaluation instrument. Background Art

[0002] Drilling fluid plugging technology is an important indicator for evaluating drilling fluid performance, which is related to wellbore stability and reservoir protection. Through the analysis of the plugging mechanism and the comparison of plugging evaluation methods, it is recognized that the PPA plugging evaluation method is more scientific and reasonable, so the drilling fluid plugging performance evaluation instrument is usually used to test the drilling fluid plugging performance.

[0003] Chinese patent announcement No. CN217820241U discloses a drilling fluid plugging performance evaluation instrument, which limits and fixes the fixing seat by two limiting spring pieces respectively engaging with the limiting snaps of two limiting grooves, and further supports and limits the fixing seat by two support rods. By removing the mounting seat, the two support rods no longer limit and support the fixing seat, and by pulling the fixing seat downward, the limiting spring pieces are separated from the limiting grooves, thereby facilitating the disassembly and cleaning of the fixing seat, the coarse filter and the fine filter. By driving a number of gripping nails into the ground and then turning a number of knobs respectively to drive a number of support members to move up and down, the tank body is adjusted to a horizontal state, so that it is suitable for various uneven grounds, and has a wider range of applications.

[0004] During the installation of the above-mentioned evaluation instrument, the fixing seat needs to be limited by the limiting spring clip before the fixing of the mounting seat can be completed. However, since the limiting spring clip is in an inclined state as a whole, and the limiting groove and the limiting spring clip are also inclined, the fixing seat will not be able to play a good limiting and fixing effect on the fixing seat due to its own weight, so there are certain limitations. Utility Model Content

[0005] The utility model aims to provide a drilling fluid plugging performance evaluation instrument to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a drilling fluid plugging performance evaluation instrument comprises a tank body, a mounting assembly is arranged at the bottom of the tank body, and a connecting assembly is arranged inside the mounting assembly.

[0007] The installation assembly consists of a connecting unit and a fixing unit. The connecting unit is located at the bottom of the tank body, and the fixing unit is located at the outer wall of the tank body.

[0008] Preferably, the connecting unit includes a mounting seat, a limiting ring, a fixing ring, a movable rod, an outer shell, a bent plate and a movable plate, the mounting seat is installed at the bottom of the tank body, the limiting ring is fixedly connected to the outer wall of the mounting seat, the fixing ring is fixedly connected to the bottom of the outer wall of the tank body, the movable rod is fixedly connected to the outer wall of the fixing ring, the outer shell is sleeved on the outer wall of the movable rod, the bent plate is installed on the outside of the fixing ring, and the movable plate is arranged on the outer wall of the mounting seat.

[0009] Preferably, the inner wall of the mounting seat is slidably connected to the outer wall of the tank body, and the mounting seat can move on the outer wall of the tank body, the outer shell is rotatably connected to the movable rod, the outer wall of the outer shell is fixedly connected to the outer wall of the bent plate, and the bent plate can be rotated through the outer shell, and the outer wall of the movable plate is slidably connected to the outer wall of the mounting seat, and the movable plate can move on the outer wall of the mounting seat.

[0010] Preferably, the fixing unit comprises a sliding rod, a threaded rod and a handle, wherein the sliding rod is fixedly connected to the top of the moving plate, the threaded rod is installed on the top of the moving plate, and the handle is installed on the bottom of the moving plate.

[0011] Preferably, the top of the sliding rod and the top of the threaded rod both pass through the bottom of the bent plate and extend to the inside of the bent plate, the outer wall of the sliding rod is slidably connected to the inner wall of the bent plate, the outer wall of the threaded rod is adapted to the inner wall of the bent plate, the handle is fixedly connected to the threaded rod, and the threaded rod can be rotated by the handle.

[0012] Preferably, the connecting assembly includes an outer ring, a connecting sleeve, a filter and a slide plate, the outer ring is fixedly connected to the inside of the mounting seat, the connecting sleeve is arranged inside the mounting seat, the filter is fixedly connected to the inside of the connecting sleeve, and the slide plate is fixedly connected to the inner wall of the tank body.

[0013] Preferably, the outer wall of the outer ring is provided with a thread that matches the inner wall of the connecting sleeve, and the outer ring and the connecting sleeve can be fixed by rotating the connecting sleeve. The outer wall of the connecting sleeve is provided with a slide rail, and the outer wall of the slide plate is slidably connected to the inner wall of the slide rail. The mounting seat can be moved by sliding to move the connecting sleeve to the interior of the tank body.

[0014] The utility model provides a drilling fluid plugging performance evaluation instrument, which has the following beneficial effects:

[0015] 1. The drilling fluid plugging performance evaluation instrument is provided with a limit ring and a handle to move the mounting seat so that the mounting seat slides on the outer wall of the tank body until the top of the mounting seat abuts against the bottom of the fixed ring, and then the bent plate is swung to make the outer wall of the movable plate abut against the outer wall of the mounting seat, and the handle is rotated to rotate the threaded rod. At this time, the movable plate will move under the action of the thread until the outer wall of the movable plate abuts against the outer wall of the limit ring, thereby completing the fixation between the tank body and the mounting seat.

[0016] 2. The drilling fluid plugging performance evaluation instrument is provided with an outer ring and a connecting sleeve. Since the outer wall of the outer ring is provided with a thread adapted to the inner wall of the connecting sleeve, the connecting sleeve can be moved by rotating to complete the connection between the connecting sleeve and the outer ring. Subsequently, the outer ring can be moved by sliding to enable the outer ring to drive the connecting sleeve to move inside the tank body, thereby completing the connection between the connecting sleeve and the tank body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a partial separation schematic diagram of the internal structure of the tank of the utility model;

[0019] Figure 3 This is a schematic diagram of the separation of the mounting seat structure of the utility model;

[0020] Figure 4 It is a schematic diagram of a partial separation of the overall structure of the utility model.

[0021] In the figure: 1. tank body; 2. mounting assembly; 201. mounting seat; 202. limiting ring; 203. fixing ring; 204. movable rod; 205. outer shell; 206. bent plate; 207. movable plate; 208. sliding rod; 209. threaded rod; 210. handle; 3. connecting assembly; 301. outer ring; 302. connecting sleeve; 303. filter screen; 304. slide plate. DETAILED DESCRIPTION

[0022] like Figure 1-4 As shown, the utility model provides a technical solution: a drilling fluid plugging performance evaluation instrument, including a tank body 1, a mounting assembly 2 is arranged at the bottom of the tank body 1, the mounting assembly 2 is composed of a connecting unit and a fixing unit, the connecting unit is located at the bottom of the tank body 1, the fixing unit is located at the outer wall of the tank body 1, and a connecting assembly 3 is arranged inside the mounting assembly 2.

[0023] The connecting unit includes a mounting seat 201, a limiting ring 202, a fixing ring 203, a movable rod 204, a housing 205, a bent plate 206 and a movable plate 207. The mounting seat 201 is mounted on the bottom of the tank body 1. The inner wall of the mounting seat 201 is slidably connected to the outer wall of the tank body 1. The mounting seat 201 can move on the outer wall of the tank body 1. The limiting ring 202 is fixedly connected to the outer wall of the mounting seat 201. The fixing ring 203 is fixedly connected to the bottom of the outer wall of the tank body 1. The movable rod 204 is fixedly connected to the fixing ring 2 03, the outer wall of the shell 205 is sleeved on the outer wall of the movable rod 204, the outer shell 205 is rotatably connected to the movable rod 204, the bent plate 206 is installed on the outside of the fixed ring 203, the outer wall of the shell 205 is fixedly connected to the outer wall of the bent plate 206, the bent plate 206 can be rotated through the outer shell 205, the movable plate 207 is arranged on the outer wall of the mounting seat 201, the outer wall of the movable plate 207 is slidably connected to the outer wall of the mounting seat 201, and the movable plate 207 can move on the outer wall of the mounting seat 201.

[0024] The fixing unit includes a sliding rod 208, a threaded rod 209 and a handle 210. The sliding rod 208 is fixedly connected to the top of the movable plate 207, and the threaded rod 209 is installed on the top of the movable plate 207. The top of the sliding rod 208 and the top of the threaded rod 209 both pass through the bottom of the bent plate 206 and extend to the inside of the bent plate 206. The outer wall of the sliding rod 208 is slidably connected to the inner wall of the bent plate 206, and the outer wall of the threaded rod 209 is adapted to the inner wall of the bent plate 206. The handle 210 is installed on the bottom of the movable plate 207. The handle 210 is fixedly connected to the threaded rod 209, and the threaded rod 209 can be rotated by the handle 210.

[0025] By setting a limiting ring 202 and a handle 210, the mounting seat 201 is moved so that the mounting seat 201 slides on the outer wall of the tank body 1 until the top of the mounting seat 201 abuts against the bottom of the fixing ring 203, and then the bent plate 206 is swung so that the outer wall of the movable plate 207 abuts against the outer wall of the mounting seat 201, and the handle 210 is rotated to rotate the threaded rod 209. At this time, the movable plate 207 moves under the action of the thread until the outer wall of the movable plate 207 abuts against the outer wall of the limiting ring 202, thereby completing the fixation between the tank body 1 and the mounting seat 201.

[0026] The connecting assembly 3 includes an outer ring 301, a connecting sleeve 302, a filter screen 303 and a slide plate 304. The outer ring 301 is fixedly connected to the inside of the mounting seat 201, and the connecting sleeve 302 is arranged inside the mounting seat 201. The outer wall of the outer ring 301 is provided with a thread adapted to the inner wall of the connecting sleeve 302. The outer ring 301 and the connecting sleeve 302 can be fixed by rotating the connecting sleeve 302. The outer wall of the connecting sleeve 302 is provided with a slide rail. The filter screen 303 is fixedly connected to the inside of the connecting sleeve 302. The slide plate 304 is fixedly connected to the inner wall of the tank body 1. The outer wall of the slide plate 304 is slidably connected to the inner wall of the slide rail. The mounting seat 201 can be moved by sliding, so that the connecting sleeve 302 moves to the inside of the tank body 1.

[0027] By setting the outer ring 301 and the connecting sleeve 302, since the outer wall of the outer ring 301 is provided with a thread adapted to the inner wall of the connecting sleeve 302, the connecting sleeve 302 can be moved by rotating to complete the connection between the connecting sleeve 302 and the outer ring 301, and then the outer ring 301 can be moved by sliding, so that the outer ring 301 can drive the connecting sleeve 302 to move inside the tank body 1, thereby completing the connection between the connecting sleeve 302 and the tank body 1.

[0028] When in use, the connecting sleeve 302 is movably connected by rotating so that the connecting sleeve 302 moves under the action of the thread and is fixedly connected to the mounting seat 201. After the mounting seat 201 and the connecting sleeve 302 are fixed, the mounting seat 201 can be moved by sliding so that the slide plate 304 moves inside the slide rail, and the bent plate 206 is rotated so that the bent plate 206 drives the movable plate 207 to swing through the slide rod 208 and the threaded rod 209 until the outer wall of the movable plate 207 abuts against the outer wall of the mounting seat 201, and then the handle 210 is rotated so that the movable plate 207 moves under the action of the threaded rod 209 until the outer wall of the movable plate 207 abuts against the outer wall of the limit ring 202, thereby completing the fixation between the tank body 1 and the mounting seat 201.

Claims

1. A drilling fluid plugging performance evaluation instrument, comprising a tank body (1), characterized in that: The bottom of the tank body (1) is provided with a mounting assembly (2), and the interior of the mounting assembly (2) is provided with a connecting assembly (3); The installation assembly (2) is composed of a connecting unit and a fixing unit, the connecting unit is located at the bottom of the tank body (1), and the fixing unit is located on the outer wall of the tank body (1); The connecting unit comprises a mounting seat (201), a limiting ring (202), a fixing ring (203), a movable rod (204), a shell (205), a bent plate (206) and a movable plate (207); the mounting seat (201) is mounted on the bottom of the tank body (1); the limiting ring (202) is fixedly connected to the outer wall of the mounting seat (201); the fixing ring (203) is fixedly connected to the bottom of the outer wall of the tank body (1); the movable rod (204) is fixedly connected to the outer wall of the fixing ring (203); the shell (205) is sleeved on the outer wall of the movable rod (204); the bent plate (206) is mounted on the outside of the fixing ring (203); and the movable plate (207) is arranged on the outer wall of the mounting seat (201); The fixing unit comprises a sliding rod (208), a threaded rod (209) and a handle (210), wherein the sliding rod (208) is fixedly connected to the top of the moving plate (207), the threaded rod (209) is installed on the top of the moving plate (207), and the handle (210) is installed on the bottom of the moving plate (207); The connection assembly (3) comprises an outer ring (301), a connection sleeve (302), a filter screen (303) and a slide plate (304); the outer ring (301) is fixedly connected to the interior of the mounting seat (201); the connection sleeve (302) is arranged inside the mounting seat (201); the filter screen (303) is fixedly connected to the interior of the connection sleeve (302); and the slide plate (304) is fixedly connected to the inner wall of the tank body (1).

2. The drilling fluid plugging performance evaluation instrument according to claim 1, characterized in that: The inner wall of the mounting seat (201) is slidably connected to the outer wall of the tank body (1), the outer shell (205) is rotatably connected to the movable rod (204), the outer wall of the outer shell (205) is fixedly connected to the outer wall of the bent plate (206), and the outer wall of the movable plate (207) is slidably connected to the outer wall of the mounting seat (201).

3. The drilling fluid plugging performance evaluation instrument according to claim 2, characterized in that: The top end of the sliding rod (208) and the top end of the threaded rod (209) both pass through the bottom of the bent plate (206) and extend to the inside of the bent plate (206); the outer wall of the sliding rod (208) is slidably connected to the inner wall of the bent plate (206); the outer wall of the threaded rod (209) is adapted to the inner wall of the bent plate (206); and the handle (210) is fixedly connected to the threaded rod (209).

4. The drilling fluid plugging performance evaluation instrument according to claim 3, characterized in that: The outer wall of the outer ring (301) is provided with a thread adapted to the inner wall of the connecting sleeve (302), the outer wall of the connecting sleeve (302) is provided with a slide rail, and the outer wall of the slide plate (304) is slidably connected to the inner wall of the slide rail.

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