CN204457519U - A kind of batch type liquid agent adding set and system thereof - Google Patents

Abstract

The utility model relates to the field of oil drilling equipment, in particular to a batch type liquid agent adding system. The utility model equates the continuous working liquid into several quantitative working liquids, and the continuous liquid additive is equivalent to several quantitative liquid additives, and the two are added and mixed together correspondingly to form a batch type liquid additive Add to mix. The utility model can realize multi-variety and multi-batch real-time monitoring and precise liquid addition.

Description

A batch type liquid agent adding device and system thereof

technical field

The utility model relates to the field of oil drilling equipment, in particular to a batch type liquid agent adding device and a system thereof.

Background technique

Oil drilling and production technology is improving day by day, and the simple working fluid can no longer meet the technical requirements of the process. It is necessary to use external liquid additives to adjust its performance. The required liquid additives have the characteristics of a wide variety and high proportional accuracy. At present, there are mainly two ways to add liquid additives: one is to add liquid additives to the working fluid at one time, and use large storage tanks to store them for construction needs, resulting in waste and transportation problems; Add liquid additives, and control the proportional accuracy of additive addition by monitoring the flow of working fluid and liquid additives in real time. However, during the construction process, the real-time monitoring amount is difficult to control, resulting in low accuracy of additive addition ratio. Moreover, there are various kinds of liquid additives according to the technical requirements, and it is necessary to calibrate the flow factor of the liquid additives according to the different physical properties of the liquid additives. The process is complicated and easily leads to errors, which affect the proportional accuracy of additive addition.

Contents of the invention

The purpose of the utility model is to overcome the above disadvantages and provide a batch type liquid agent adding device and system, which can realize multi-variety and multi-batch real-time monitoring and precise liquid addition.

In order to achieve the above-mentioned technical purpose, the solution provided by the utility model is: a batch-type liquid agent adding device, including a control module and a liquid storage tank, a pump, and a metering tank connected sequentially through a liquid additive pipeline, and has a mutually exclusive discharge function. The discharge valve group, the liquid outlet of the liquid storage tank is connected with the suction port of the pump, the discharge port of the pump is connected with the liquid inlet of the metering tank, and the discharge valve group is connected with the metering tank The liquid outlet of the tank constitutes the working pipeline from the liquid storage tank to the discharge valve group; a regulating valve is set on the pipeline between the pump and the metering tank, and the regulating valve is connected with the inlet of the liquid storage tank. The liquid port forms a self-circulation branch pipeline from the liquid storage tank back to the liquid storage tank through the pipeline; liquid level gauges are installed in the liquid storage tank and the metering tank; the pump, regulating valve, discharge valve group, liquid level The meter is connected with the control module signal.

Moreover, the control module includes a PLC automatic control system and a manual control system.

Moreover, the liquid level gauge includes an electronic liquid level gauge and a visual liquid level gauge.

Moreover, the discharge valve group is a two-position three-way valve, or a two-position two-way valve.

The utility model also provides: a batch-type liquid agent adding system, including a plurality of batch-type liquid agent adding devices as described above, and the liquid outlets of the metering tanks of each batch-type liquid agent adding device are connected to and controlled The discharge valve group connected with the module signal, the pumps, regulating valves and liquid level gauges of each batch type liquid agent adding device are all connected with the control module signal. Constitutes a batch liquid additive system with any ratio of various additives.

The utility model also provides: a method for adding liquid in a batch type liquid agent adding system as described above, including the following steps.

Step 1. During the process of working fluid delivery, set up independent liquid storage units, so that each liquid storage unit can be controlled in turn to alternately store and discharge liquid. On the premise of ensuring the continuity of the working fluid, the working fluid Equivalent to multiple batches of working solution.

In step 2, the control module determines the liquid quantity of the additive required by each liquid agent adding device in a single batch according to the required ratio of the additive and the working fluid.

Step 3, the pumps of the liquid agent adding devices transport the additives from the liquid storage tanks to the metering tanks, and the control module determines that the additives in the metering tanks reach the liquid volume required for the single batch according to the liquid level gauges, and then control the pumps Stop feeding additives to each metering tank.

Step 4, the control module determines that the corresponding batch of working fluid is in the liquid storage stage, and adds additives to the batch of working fluid through the discharge valve group at one time. After each metering tank is emptied, the control module controls the discharge valve group to close .

Step 5, cycle step 2 to step 4 until the whole additive adding work is completed.

The beneficial effects of the utility model are:

1. The process of adding additives to the continuous working fluid is equivalent to the process of adding quantitative additives to multiple batches of quantitative working fluids, which ensures the controlled amount of additives and the high precision of the ratio of working fluid and additives;

2. Applicable to various liquid additives with different physical properties, no need to calibrate the flow factor of liquid additives;

3. The control module includes a PLC automatic control system, which has a high degree of automation and improves work efficiency;

4. The control module includes a manual control system, which can be manually operated for additive preparation;

5. The self-circulation branch pipeline plays the role of standby diversion, stirring and heating;

6. Simple structure, reasonable and reliable, easy to maintain.

Description of drawings

Fig. 1 is a structural schematic diagram of a batch type liquid agent adding device of the present invention.

Fig. 2 is a structural schematic diagram of a two-position three-way discharge valve group.

Fig. 3 is a structural schematic diagram of a two-position two-way discharge valve group.

Fig. 4 is a structural schematic diagram of the batch type liquid agent adding system of the present invention.

FIG. 5 is a schematic diagram of the assembly of FIG. 4 .

Among them, 1. Control module, 2. Liquid storage tank, 3. Pump, 4. Measuring tank, 5. Discharge valve group, 6. Regulating valve, 7. Liquid level gauge.

Detailed ways

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

Embodiment 1: A batch-type liquid agent adding device, as shown in Figure 1, includes a control module 1 and a liquid storage tank 2, a pump 3, and a metering tank 4 connected in sequence through a liquid additive pipeline, and has a mutually exclusive discharge function The outlet valve group 5 of the liquid storage tank 2 is connected with the suction port of the pump 3, and the discharge port of the pump 3 is connected with the liquid inlet port of the metering tank 4, and the outlet valve group 5 is connected to the liquid outlet of the metering tank 4 to form a working pipeline from the liquid storage tank 2 to the discharge valve group 5; Valve 6, the regulating valve 6 and the liquid inlet of the liquid storage tank 2 form a self-circulation branch pipeline from the liquid storage tank 2 back to the liquid storage tank 2 through pipelines; A liquid level gauge 7 is provided; the pump 3 , the regulating valve 6 , the discharge valve group 5 , and the liquid level gauge 7 are all signal-connected to the control module 1 .

Further, the above-mentioned control module 1 includes a PLC automatic control system and a manual control system.

Further, the above-mentioned liquid level gauge 7 includes an electronic liquid level gauge and a visual liquid level gauge.

Further, the above discharge valve group 5 is a two-position three-way valve, or a two-position two-way valve. The mutually exclusive discharge function of the discharge valve group 5 can be realized by the two-position three-way structure shown in Figure 2, or the two-position two-way structure shown in Figure 3, or by other mutually exclusive discharge structures. .

In cementing operations, the working fluid pumped downhole generally cannot meet the construction needs, so it is necessary to add liquid additives to the working fluid in a certain proportion. In this scheme, the process of continuously adding liquid additives to the working fluid is equivalent to several units of quantitative mixing and adding. That is to say, the continuous working fluid is equivalent to several quantitative working fluids, and the continuous liquid additive is equivalent to several quantitative liquid additives, and the two are added and mixed together accordingly. This forms a batch-type liquid additive addition and mixing, which achieves the same effect as continuous addition and mixing. At the same time, since the working fluid and liquid additives are decomposed into quantitative batches, errors are eliminated, and the accuracy of proportional addition is higher.

When adding additives, to stop feeding additives to the metering tank, two methods can be used to stop the pump and open the self-circulation branch pipeline. The latter is preferred, the additives are mutually exclusive selected from the circulation pipeline through the regulating valve, no additives are delivered to the metering tank, the metering tank starts to empty, and the liquid level of the metering tank drops. Opening the self-circulation branch pipeline has the following advantages: (1) The start of the pump has a process, and the switching of the self-circulation branch pipeline can make the response of the additive "delivery-stop" action more sensitive; (2) The start of the pump A large power and torque are required, and the self-circulation branch pipeline switching method can save energy and avoid excessive waste of configuration; (3) The self-circulation branch pipeline itself can perform circulation mixing, heat preservation and heating, and anti-sedimentation, etc. advantage.

Embodiment two: a kind of batch type liquid agent addition system, as shown in Figure 4 and Figure 5, comprises a kind of a kind of batch type liquid agent addition device as described in embodiment one, the metering of each batch type liquid agent addition device The liquid outlet of the tank 4 is connected to the discharge valve group 5 connected with the signal of the control module 1, and the pump 3, the regulating valve 6 and the liquid level gauge 7 of each batch type liquid agent adding device are connected with the signal of the control module 1. Constitutes a batch liquid additive system with any ratio of various additives.

In well cementing operations, it is sometimes necessary to add several types and quantities of additives for specific construction. This scheme can realize the continuous addition and mixing of multi-variety liquid additives in batches. It not only eliminates the error, but also improves the accuracy of addition, and also improves the efficiency of multi-variety addition.

This embodiment also provides: a method for adding liquid in a batch type liquid agent adding system as described above, including the following steps.

Step 1: In the middle of the process of working fluid delivery, set up independent liquid storage units, so that each liquid storage unit can be controlled in turn to cycle and alternate liquid storage and discharge. On the premise of ensuring the continuity of the working fluid, the working fluid Equivalent to multiple batches of working solution.

Step 2, the control module 1 determines the liquid quantity of the additive required by each liquid agent adding device in a single batch according to the required ratio of the additive and the working fluid.

Step 3, the pump 3 of each liquid agent adding device transports the additive from each liquid storage tank 2 to each metering tank 4, and the control module 1 determines that the additive of each metering tank 4 reaches the liquid required for the single batch according to each liquid level gauge 7 When measuring, control each pump 3 to stop delivering the additive to each metering tank 4.

Step 4, the control module 1 determines that the corresponding batch of working fluid is in the liquid storage stage, and adds additives to the batch of working fluid through the discharge valve group 5 at one time. After each metering tank 4 is emptied, the control module 1 controls The outlet valve group 5 is closed.

Step 5, cycle step 2 to step 4 until the whole additive adding work is completed.

In this scheme, the continuous working fluid is equivalent to several quantitative working fluids, and the continuous liquid additive is equivalent to several quantitative liquid additives, and the two are added and mixed together correspondingly. This forms a batch-type liquid additive addition and mixing, which achieves the same effect as continuous addition and mixing. At the same time, since the working fluid and liquid additives are decomposed into quantitative batches, errors are eliminated, and the accuracy of proportional addition is higher.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements or deformations can also be made, these improvements or Deformation should also be regarded as the protection scope of the present utility model.

Claims (5)

1. a batch type liquid agent adding set, is characterized in that: comprise control module and the fluid reservoir be connected successively by liquid additive pipeline, pump, measuring tank, have the blow off valve group of alternative discharge function; The liquid outlet of described fluid reservoir is connected with described pump intake, and the outlet opening of described pump is connected with the inlet of described measuring tank, and described blow off valve group is connected to the liquid outlet of described measuring tank, forms the working line from described fluid reservoir to described blow off valve group; Pipeline between described pump and described measuring tank arranges control valve, and the inlet of this control valve and fluid reservoir consists of the self-loopa branch line getting back to fluid reservoir from fluid reservoir pipeline; In described fluid reservoir and measuring tank, all content gauge is set; Described pump, control valve, blow off valve group, content gauge all connect with control module signal.

2. a kind of batch type liquid agent adding set according to claim 1, is characterized in that: described control module comprises PLC automatic control system and manual control system.

3. a kind of batch type liquid agent adding set according to claim 1, is characterized in that: described content gauge comprises electronic liquid level gauge and order shows content gauge.

4. a kind of batch type liquid agent adding set according to claim 1, is characterized in that: described blow off valve group is two position three-way valve, or two position two-way valve.

5. a batch type liquid agent add-on system, it is characterized in that: comprise multiple a kind of batch type liquid agent adding set as claimed in claim 1, the measuring tank liquid outlet of each batch type liquid agent adding set also links the blow off valve group connected with control module signal, and the pump of each batch type liquid agent adding set, control valve, content gauge all connect with control module signal.