CN205150787U - Fluid reservoir is joined in marriage to improved generation convenient to from complete flowing back of liquid outlet - Google Patents

Abstract

An improved liquid dispensing tank that facilitates complete liquid discharge from the liquid outlet. The tank body (1) includes a tank wall (2) and a tank bottom (3). The tank body (1) is in the shape of a rectangular parallelepiped box. Install the bracket (4), the surface on the bottom of the tank (3) is inclined along a diagonal direction, a drain funnel (7) is connected downward at its lowest point, and liquid level marks are marked on the diagonal (6), install the liquid outlet pipeline (8) at the liquid outlet at the lower end of the liquid discharge funnel (7); the bottom of the tank is inclined to a certain extent, subject to the smooth flow of liquid, no accumulation of liquid, and no influence on the work of the agitator in the tank, it can be Ensure that each tank of liquid is completely discharged, and the pump is not evacuated, continuous operation, the quality of liquid dosing successively is not disturbed; the system is safe and stable, does not increase the difficulty of operation and workload, and is suitable for various liquid preparations, which is convenient and safe.

Description

Improved liquid dispensing tank for complete liquid discharge from the liquid outlet

technical field

The utility model relates to the structure improvement technology of a liquid distributing tank device for downhole operation in oil and gas well exploitation, in particular to an improved liquid distributing tank which is convenient for complete liquid discharge from a liquid outlet.

Background technique

In oil extraction, downhole operations such as fracturing, profile control, and water plugging are required to increase production and injection to increase recovery.

In the aforementioned operations, it is necessary to use a mixed liquid with certain functions, that is, a working fluid. Working fluids are all time-sensitive, reaching a certain position within a certain period of time and reaching a certain state. Therefore, all the liquid in the liquid distribution tank should flow out. If the remaining liquid will inevitably affect the later work.

Profile control is a key link in oilfield water injection development, which is used to properly inject water into water injection wells. The concentration and amount of profile control agent have an important influence on the profile control effect. In order to ensure the profile control effect, the profile control agent must be prepared to meet the design concentration, and the profile control agent must be injected downhole according to the designed amount.

In the prior art, the liquid level of the profile control liquid distribution tank is indicated on site to help construction personnel to observe and measure. Since the liquid outlet of the profile control tank is often opened at the lower part of the tank side, in order to avoid the injection pump being evacuated, the liquid level must be higher than the top of the liquid outlet, making it difficult for a part of the profile control fluid to flow out at the bottom of the profile control liquid tank. The defects of the existing tank body are obvious: the residual liquid makes the latter tank always affected by the previous tank, and the quality of the dosing is unstable; especially, the profile control additive affected by the viscosity cannot be dispersed effectively. Use; the profile control agent stays for a long time, and it is easy to form glue at the bottom of the profile control liquid mixing tank, and it is difficult to clean the tank; especially under the current technical conditions, when performing double-liquid injection, due to the influence of residual liquid, double tanks have to be equipped , in order to maintain the alternate dosing of agents A and B, which also directly increases operating costs and equipment waste.

Utility model content

The purpose of this utility model is to provide an improved liquid dispensing tank that is convenient for complete liquid discharge from the liquid outlet, so as to ensure that each tank of working liquid can not only discharge liquid completely but also not affect each other; at the same time, it can reduce the labor of cleaning the tank.

The purpose of this utility model will be achieved through the following technical measures: comprising tank body, tank wall, tank bottom, support, observation window, liquid level mark, drain funnel and liquid outlet pipeline; tank body comprises tank wall and tank bottom, tank body The body is in the shape of a rectangular parallelepiped box, and a bracket is installed at the bottom of the tank body. The upper surface of the tank bottom is inclined along a diagonal direction, and a drain funnel is connected downward at its lowest point, and there are marks on the diagonal line. Install the discharge line at the liquid outlet at the lower end of the discharge funnel.

In particular, a sight glass is installed vertically on the tank wall, and there is a liquid level mark on the sight glass.

In particular, the vertical height difference between the high point and the low point of the inclined diagonal line of the bottom of the tank is 10-15 cm.

In particular, the height of the bracket is slightly greater than the diameter of the outlet line plus the height of the connecting elbow.

The advantages and effects of the utility model: the bottom of the tank is tilted to a certain extent, which does not affect the work of the agitator in the tank, and can ensure that the liquid in each tank is completely discharged, and the pump does not evacuate, and works continuously. The quality of successive dosing liquids is not disturbed; the system realizes safe and stable work without increasing operation difficulty and workload, and is suitable for various liquid preparations, which is convenient and safe.

Description of drawings

Fig. 1 is a structural schematic diagram of Embodiment 1 of the utility model.

Fig. 2 is a schematic diagram of the top view of the inside of the tank in Example 1 of the utility model.

Reference signs include: tank body 1 , tank wall 2 , tank bottom 3 , bracket 4 , observation window 5 , liquid level mark 6 , drain funnel 7 , and outlet pipeline 8 .

detailed description

The principle of the utility model is to improve the structure of the liquid distribution tank, including improving the position of the liquid outlet, so that the liquid outlet can be completely drained: first, the height of the bottom bracket of the tank is increased, and the height of the bracket is greater than the diameter of the liquid outlet pipeline plus the height of the elbow; Secondly, one corner of the bottom of the tank is raised by 10-15cm, and a liquid outlet is provided at the opposite corner of the corner; third, a drain funnel is connected to the lower part of the bottom of the tank, and a liquid outlet pipeline is welded at the lower part of the funnel; Mark the liquid level on the body and the bottom of the tank. The accuracy of the mark on the bottom should be high, especially the mark close to the discharge funnel should be obvious. The bottom of the tank is inclined to a certain extent, which does not affect the work of the agitator in the tank. The liquid is easy to concentrate and completely discharged, ensuring that the quality, quantity and space between each tank will not be disturbed. Through these mutually coordinated structural improvements, not only can the downhole operation be completed conveniently, but also the invention objective of the utility model can be satisfied. Realize the safe and stable operation of the system, without increasing the difficulty and workload of the operation, suitable for the preparation of various liquids, convenient and safe.

The utility model comprises: a tank body 1 , a tank wall 2 , a tank bottom 3 , a support 4 , an observation window 5 , a liquid level mark 6 , a drain funnel 7 and a liquid outlet pipeline 8 .

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Embodiment 1: As shown in accompanying drawing 1 and 2, tank body 1 comprises tank wall 2 and tank bottom 3, and tank body 1 is cuboid box shape, and bracket 4 is installed at the bottom of tank body 1, and the upper surface of tank bottom 3 is along a The diagonal direction is inclined, and a drain funnel 7 is connected downward at its lowest point, and a liquid level mark 6 is marked on the diagonal, and a liquid outlet line 8 is installed at the liquid outlet at the lower end of the drain funnel 7 .

In the foregoing, the observation window 5 is installed vertically on the tank wall 2, and the liquid level mark 6 is arranged on the observation window 5.

In the above, the vertical height difference between the high point and the low point of the inclined diagonal line at the bottom of the tank is 10-15cm, which does not affect the use of the agitator, and is conducive to the concentration of the working fluid at the liquid outlet by gravity.

In the foregoing, the bottom of the tank 3 is connected to the drain funnel 7 for the purpose of collecting the last and a small amount of working fluid, and the pump is not easy to be evacuated.

In the foregoing, the height of the bracket 4 is slightly larger than the diameter of the outlet pipeline 8 plus the height of the connecting elbow, which is convenient for connecting pipelines.

When the utility model is in operation, it can ensure that each tank of liquid is completely discharged, and the quality of successively dosing liquids is not disturbed. Specifically include:

1) The liquid dispensing tank normally dispenses and drains liquid. When the liquid level mark 6 on the bottom of the tank 3 appears, pay attention to observe the liquid level, and rinse the residue on the bottom 3 of the tank 1 in time to ensure that all the injected liquid in the tank is discharged.

2) When the liquid level mark 6 close to the discharge funnel 7 appears, depending on the size of the tank body 1, add 0.1m ³ -0.3m ³ appropriate amount of water to replace the last residual liquid at the bottom 3 of the tank and enter the outlet pipeline 8, and ensure that the bottom of the tank is 3 The outlet is below the liquid level and the pump does not evacuate.

3) The amount of supplemented water can be measured according to the 3 mark on the bottom of the tank, and it will be deducted in the next tank without affecting the overall quality.

4) When clearing the tank, first close the outlet valve of the liquid outlet pipeline 8, first rinse the tank wall 2, circle from the upper part to the lower part, and finally rinse the bottom 3 of the tank, and start pumping when the tank body 1 reaches a certain amount of liquid. Use the minimum displacement to flush while suctioning until the tank wall 2 and tank bottom 3 are clean, and close the valve after the liquid is completely discharged.

Claims (4)

1. be convenient to the improved type Agitation Tank from the complete discharge opeing of liquid outlet, comprise (3), support (4), observation window (5), fluid level markings (6), drainage hopper (7) and fluid pipeline (8) at the bottom of tank body (1), tank skin (2), tank; It is characterized in that, tank body (1) comprises at the bottom of tank skin (2) and tank (3), tank body (1) is in cuboid box-shaped, at tank body (1) bottom mounting bracket (4), the upper surface of (3) at the bottom of tank tilts along a diagonal, a drainage hopper (7) is connected downwards at its lowest part, and all indicate fluid level markings (6) on this diagonal line, the liquid outlet in drainage hopper (7) lower end installs fluid pipeline (8).

2. be convenient to as claimed in claim 1, from the improved type Agitation Tank of the complete discharge opeing of liquid outlet, it is characterized in that, the upper at right angle setting observation window (5) of tank skin (2), and observation window (5) has fluid level markings (6).

3. be convenient to as claimed in claim 1, from the improved type Agitation Tank of the complete discharge opeing of liquid outlet, it is characterized in that, the height point of the sloped diagonal of (3) at the bottom of tank and the vertical drop of low spot are 10-15cm.

4. be convenient to as claimed in claim 1, from the improved type Agitation Tank of the complete discharge opeing of liquid outlet, it is characterized in that, the height of support (4) is a bit larger tham the height that fluid pipeline (8) diameter adds connecting bend.