Drilling fluid sedimentation stability testing device

Abstract

The utility model relates to the technical field of drilling fluid testing, and discloses a drilling fluid sedimentation stability testing device which comprises sampling cylinders symmetrically connected to the right side wall of a cylinder body in a penetrating mode. The screw rod penetrates through and is in threaded connection with the right side wall of the sampling barrel; the piston disc is rotationally connected to the left end of the lead screw and is slidably connected to the inner wall of the sampling barrel; the liquid outlet pipe is communicated with the bottom of the sampling barrel. Drilling fluid is poured into the cylinder body through the liquid inlet pipe, the stirring mechanism evenly mixes the drilling fluid, then the drilling fluid stands still, layered drilling fluid is obtained, when drilling fluid in a current layer needs to be advanced, a worker rotates a hand wheel on the right side of the layer, the hand wheel drives a lead screw to rotate, the lead screw drives a piston disc to move rightwards, and the drilling fluid in the layer is separated from the piston disc. The piston disc sucks layered liquid into the sampling barrel, and the liquid is discharged through the liquid outlet pipe at the bottom, so that the layered liquid is obtained, the sampling effect on different layers is realized, and the sampling convenience is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to drilling fluid test technical field, concretely is a kind of drilling fluid sedimentation stability testing device. BACKGROUND

[0002] Drilling fluid is the liquid medium necessary in the drilling process, and undertakes many important tasks in the whole drilling process, such as cooling drill bit, suspending drilling debris, balancing wellhead pressure and the like. In the drilling fluid, a certain amount of solid particles, such as potassium feldspar, barite, iron minerals and the like, are added, and these solid particles form a suspension liquid in the drilling fluid.

[0003] At present, the device for measuring the sedimentation stability of drilling fluid mostly adopts static sedimentation test method, that is, after drilling fluid is added to an aging tank, it is statically placed at a specific temperature for a period of time, and then upper and lower drilling fluid samples are taken, and the sedimentation stability of drilling fluid is determined by measuring the density difference between the upper and lower samples. However, it is inconvenient to extract samples of different layers, thereby affecting the accuracy of test results. UTILITY MODEL CONTENT

[0004] (I) Technical problem solved

[0005] In view of the deficiencies of the prior art, the utility model provides a drilling fluid sedimentation stability testing device, which has the advantages of convenient stratified sampling, and solves the problem that the existing testing device is inconvenient for stratified sampling when detecting the stability of drilling fluid, which easily affects the accuracy of test results.

[0006] (II) Technical scheme

[0007] To achieve the above object, the utility model provides the following technical scheme: a drilling fluid sedimentation stability testing device, comprising a main body assembly, the main body assembly comprises:

[0008] A cylinder body is provided with a liquid inlet pipe at the top;

[0009] A sampling assembly is arranged on the cylinder body, and the sampling assembly comprises:

[0010] A sampling cylinder is symmetrically and throughly connected to the right side wall of the cylinder body;

[0011] A lead screw is throughly and threadedly connected to the right side wall of the sampling cylinder;

[0012] A piston disc is rotationally connected to the left end of the lead screw, and is slidingly connected to the inner wall of the sampling cylinder;

[0013] A hand wheel is fixedly connected to the right end of the lead screw;

[0014] A liquid outlet pipe is throughly connected to the bottom of the sampling cylinder;

[0015] A stirring mechanism is arranged on the barrel.

[0016] Preferably, the stirring mechanism comprises:

[0017] A bracket is fixedly connected to the top of the barrel.

[0018] A motor is arranged at the bottom of the bracket.

[0019] A rotating shaft is arranged through and rotatably connected to the top of the barrel, and the top of the rotating shaft is fixedly connected with the output shaft of the motor.

[0020] A stirring blade is symmetrically and fixedly connected to the outer sidewall of the rotating shaft.

[0021] Preferably, the barrel and the sampling barrel are both provided with a visual window.

[0022] Preferably, the sampling barrel is provided with an electromagnetic valve one at the input end, and the sampling barrel is provided with an electromagnetic valve two at the connection position of the liquid outlet pipe.

[0023] Preferably, a scale line is arranged outside the visual window of the sampling barrel.

[0024] Preferably, a bottom plate is symmetrically and fixedly connected to the right sidewall of the barrel, and the bottom plate is arranged below each liquid outlet pipe.

[0025] (Three) beneficial effects

[0026] Compared with the prior art, the drilling fluid sedimentation stability testing device has the following beneficial effects:

[0027] The testing device has the advantages of convenient stratified sampling. The drilling fluid is filled into the barrel through the liquid inlet pipe, the stirring mechanism uniformly mixes the drilling fluid, and then the drilling fluid is allowed to stand, so that stratified drilling fluid is obtained. When the drilling fluid in the current stratification needs to be taken out in advance, the staff rotates the hand wheel on the right side of the stratification, the hand wheel drives the screw rod to rotate, the screw rod drives the piston disc to move to the right side, the piston disc sucks the stratified liquid into the sampling barrel, and the liquid is discharged through the liquid outlet pipe at the bottom, so that the stratified liquid is obtained, the sampling effect of different stratifications is realized, and the convenience of sampling is increased. The problem that the existing testing device is not convenient for stratified sampling when detecting the stability of the drilling fluid and is easy to affect the accuracy of the detection result is solved. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the utility model;

[0029] Figure 2 It is an enlarged structural schematic diagram of A in the utility model;

[0030] Figure 3It is the front view sectional structure schematic diagram of the utility model.

[0031] Figure 4 It is the B place amplification structure schematic diagram in the utility model.

[0032] In the drawing,

[0033] 1, main assembly;11, cylinder body;12, liquid inlet pipe;

[0034] 2, sampling assembly;21, sampling cylinder;22, screw;23, piston disc;24, hand wheel;25, liquid outlet pipe;26, stirring mechanism;261, support;262, motor;263, rotating shaft;264, stirring blade;27, electromagnetic valve one;271, electromagnetic valve two;

[0035] 3, visualization window;4, bottom plate;5, scale line. DETAILED DESCRIPTION

[0036] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0037] Embodiment one

[0038] Referring to Figures 1-4 A drilling fluid sedimentation stability testing device, comprising a main assembly 1, the main assembly 1 includes: a cylinder body 11, the top of which is provided with a liquid inlet pipe 12; the cylinder body 11 is provided with a sampling assembly 2, the sampling assembly 2 includes: a sampling cylinder 21, which is symmetrically and throughly connected to the right side wall of the cylinder body 11; a screw 22, which is throughly and threadedly connected to the right side wall of the sampling cylinder 21; a piston disc 23, which is rotationally connected to the left end of the screw 22, and is slidingly connected to the inner wall of the sampling cylinder 21; a hand wheel 24, which is fixedly connected to the right end of the screw 22; a liquid outlet pipe 25, which is throughly connected to the bottom of the sampling cylinder 21; a stirring mechanism 26, which is arranged on the cylinder body 11. The stirring mechanism 26 includes: a support 261, which is fixedly connected to the top of the cylinder body 11; a motor 262, which is arranged at the bottom of the support 261; a rotating shaft 263, which is throughly and rotationally connected to the top of the cylinder body 11, and the top of the rotating shaft 263 is fixedly connected with the output shaft of the motor 262; stirring blades 264, which are symmetrically and fixedly connected to the outer side wall of the rotating shaft 263. The cylinder body 11 and the sampling cylinder 21 are both provided with a visualization window 3.

[0039] In use, the worker fills the barrel 11 inside through the liquid inlet pipe 12, and the stirring mechanism 26 mixes the drilling fluid uniformly: the worker starts the motor 262, the motor 262 drives the rotating shaft 263 to rotate, and the stirring blade 264 outside the rotating shaft 263 mixes the drilling fluid inside the barrel 11 uniformly. After mixing, wait for the drilling fluid to stand, get the layered drilling fluid, and the worker extracts the corresponding layered drilling fluid according to the need: when the drilling fluid in the current layer needs to be extracted, the worker rotates the hand wheel 24 on the right side of the layer, the hand wheel 24 drives the lead screw 22 to rotate, the lead screw 22 drives the piston disc 23 to move to the right side, and the piston disc 23 sucks the layered liquid into the sampling cylinder 21, and the liquid is discharged through the liquid outlet pipe 25 at the bottom, so that the liquid in the layer is obtained, the sampling effect of different layers is realized, and the convenience of sampling is increased. The visual window 3 outside the barrel 11 facilitates the worker to observe whether the drilling fluid is layered after standing, and the visual window 3 on the sampling cylinder 21 facilitates the worker to observe the position of the piston disc 23.

[0040] Embodiment two

[0041] On the basis of embodiment one, an auxiliary function is added.

[0042] Referring to Figures 1-4 , the sampling cylinder 21 input end is provided with electromagnetic valve one 27, and the liquid outlet pipe 25 and the sampling cylinder 21 connection place are provided with electromagnetic valve two 271. The visual window 3 outside the sampling cylinder 21 is provided with a scale line 5. The barrel 11 right side wall is symmetrically fixedly connected with a bottom plate 4, and the bottom plate 4 is respectively located below each liquid outlet pipe 25.

[0043] When the worker samples, the electromagnetic valve one 27 is opened, and the electromagnetic valve two 271 is closed, at this time the piston disc 23 can extract a certain amount of liquid, and the scale line 5 on the visual window 3 outside the sampling cylinder 21 measures the liquid capacity, which is convenient for the worker to control the sampling amount of the liquid sample. When the piston disc 23 moves to the appropriate position, the worker closes the electromagnetic valve one 27 and opens the electromagnetic valve two 271, and a certain amount of liquid is discharged through the liquid outlet pipe 25, which is more convenient. When the worker extracts the liquid sample, the sampling container can be placed on the top of the corresponding bottom plate 4, and the worker does not need to hold the container to take the liquid, which enhances the practicability.

[0044] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A drilling fluid sedimentation stability testing device, comprising a main body assembly (1), the main body assembly (1) comprising: a cylinder (11) having a liquid inlet pipe (12) penetrating through the top thereof; characterized in that: a sampling assembly (2) is arranged on the cylinder (11), the sampling assembly (2) comprising: a sampling cylinder (21) symmetrically and penetratingly connected to the right side wall of the cylinder (11); a lead screw (22) penetratingly and threadedly connected to the right side wall of the sampling cylinder (21); a piston disc (23) rotationally connected to the left end of the lead screw (22) and slidingly connected to the inner wall of the sampling cylinder (21); a hand wheel (24) fixedly connected to the right end of the lead screw (22); a liquid outlet pipe (25) penetratingly connected to the bottom of the sampling cylinder (21); a stirring mechanism (26) arranged on the cylinder (11).

2. The drilling fluid settling stability testing device of claim 1, wherein: The stirring mechanism (26) comprises: a bracket (261) fixedly connected to the top of the cylinder (11); a motor (262) arranged at the bottom of the bracket (261); a rotating shaft (263) penetratingly and rotationally connected to the top of the cylinder (11), the top of the rotating shaft (263) being fixedly connected with the output shaft of the motor (262); stirring blades (264) symmetrically and fixedly connected to the outer side wall of the rotating shaft (263).

3. The drilling fluid settling stability testing device of claim 2, wherein: The cylinder (11) and the sampling cylinder (21) are both provided with a visualization window (3).

4. The drilling fluid settling stability testing apparatus of claim 3, wherein: An electromagnetic valve one (27) is arranged at the input end of the sampling cylinder (21), and an electromagnetic valve two (271) is arranged at the connection between the liquid outlet pipe (25) and the sampling cylinder (21).

5. The drilling fluid settling stability testing apparatus of claim 4, wherein: A scale line (5) is arranged outside the visualization window (3) on the sampling cylinder (21).

6. The drilling fluid settling stability testing apparatus of claim 5, wherein: A bottom plate (4) is symmetrically and fixedly connected to the right side wall of the cylinder (11), and the bottom plate (4) is respectively located below each liquid outlet pipe (25).

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