Automatic monitoring and supplying device for hydraulic fracturing fluid

Abstract

The utility model provides an automatic monitoring and supplying device for hydraulic fracturing fluid. The automatic monitoring and supplying device comprises a mixing tank, a first storage tank, a second storage tank, a third storage tank, a distribution pump, a fluid supply pump, a filter and a fluid supply manifold, the mixing tank is connected with the input end of the distribution pump, and the output end of the distribution pump is respectively connected with the first storage tank, the second storage tank and the third storage tank through a second valve; the first storage tank is connected with the liquid supply pump through a third valve, the second storage tank is connected with the liquid supply pump through a fourth valve, and the third storage tank is connected with the input end of the liquid supply pump through a fifth valve; the output end of the liquid supply pump is connected with a liquid supply manifold, and the liquid supply manifold is connected with a seventh valve used for discharging residual liquid in the liquid supply manifold; according to the utility model, the prepad fluid, the sand-carrying fluid and the displacing fluid are respectively contained in the first storage tank, the second storage tank and the third storage tank, in the construction process, the on-off of the third valve, the fourth valve and the fifth valve can be controlled as required, the pumping of the prepad fluid, the sand-carrying fluid and the displacing fluid by the fluid supply pump can be quickly switched, and the continuity of construction is ensured.

Description

Technical Field

[0001] This utility model belongs to the technical field of hydraulic fracturing equipment, specifically relating to an automatic monitoring and replenishment device for hydraulic fracturing fluid. Background Technology

[0002] According to the technical specifications and construction practices of hydraulic fracturing in coal mines, fracturing fluid must be injected in three parts: pre-fracturing fluid, proppant-carrying fluid, and displacement fluid. The formulations of the pre-fracturing fluid, proppant-carrying fluid, and displacement fluid are different.

[0003] In the prior art, Chinese utility model patent document with authorization announcement number CN221609962U discloses a fracturing adaptive fluid supply control system. This system can only transport one type of liquid from the reservoir to the fluid supply manifold through the fluid supply module. It cannot realize the segmented injection of pre-flush fluid, sand-carrying fluid and displacement fluid. During the fracturing process, after one type of liquid is injected, the residual liquid in the reservoir needs to be cleaned before another type of liquid can be injected for the operation, which affects the continuity of the operation.

[0004] Therefore, it is necessary to design an automatic monitoring and replenishment device for hydraulic fracturing fluid that can quickly switch between pre-fracturing fluid, proppant-carrying fluid, or displacement fluid according to construction needs to ensure the continuity of construction and solve the current technical problems. Utility Model Content

[0005] In view of the shortcomings of the existing technology, this utility model provides an automatic monitoring and replenishment device for hydraulic fracturing fluid that can quickly switch between pre-injection fluid, sand-carrying fluid or displacement fluid according to construction needs, so as to ensure the continuity of construction.

[0006] The technical solution of this utility model is as follows: an automatic monitoring and replenishment device for hydraulic fracturing fluid, comprising a mixing tank, a first storage tank, a second storage tank, a third storage tank, a distribution pump, a supply pump, a filter, and a supply manifold; the mixing tank is connected to the input end of the distribution pump, and the output end of the distribution pump is connected to the first storage tank, the second storage tank, and the third storage tank respectively through a second valve; the first storage tank is connected to the supply pump through a third valve, the second storage tank is connected to the supply pump through a fourth valve, and the third storage tank is connected to the input end of the supply pump through a fifth valve; the output end of the supply pump is connected to the supply manifold, and a seventh valve for discharging residual fluid is connected to the supply manifold; the first storage tank, the second storage tank, and the third storage tank are each equipped with a level gauge for monitoring their real-time internal liquid level.

[0007] Furthermore, a protective valve is connected to the pipeline between the filter and the liquid supply manifold, and the output end of the protective valve is connected to a waste liquid tank.

[0008] Furthermore, the output end of the seventh valve is connected to the waste liquid tank.

[0009] Furthermore, a first pressure sensor is connected to the pipeline at the input end of the filter, a second pressure sensor is connected to the pipeline at the output end of the filter, and a sixth valve is connected to the filter for discharging the filtered dirt inside.

[0010] Furthermore, a first valve is connected to the pipeline between the distribution pump and the second valve.

[0011] Furthermore, a metering pump is connected to the mixing tank, which is used to pump a metered amount of water into the mixing tank.

[0012] Furthermore, each of the first, second, and third storage tanks is equipped with a heater; each of the first, second, and third storage tanks is connected to a circulation pump, with the input end of the circulation pump connected to the bottom of the first, second, and third storage tanks, and the output end of the circulation pump connected to the top of the corresponding first, second, and third storage tanks.

[0013] Furthermore, an eighth valve is connected between the mixing tank and the liquid supply pump via a pipeline.

[0014] Furthermore, the automatic monitoring and replenishment device for hydraulic fracturing fluid also includes a controller and an audible and visual alarm, with the level gauge and the audible and visual alarm both connected to the controller.

[0015] The beneficial effects of this utility model are:

[0016] (1) In this utility model, the first storage tank, the second storage tank and the third storage tank respectively contain pre-conditioning liquid, sand-carrying liquid and displacement liquid. During the construction process, the opening and closing of the third valve, the fourth valve and the fifth valve can be controlled as needed to quickly switch the liquid supply pump to pump the pre-conditioning liquid, sand-carrying liquid and displacement liquid, so as to ensure the continuity of construction.

[0017] (2) The interior of the mixing tank is used to prepare the pre-flush liquid, sand-carrying liquid or displacement liquid according to different proportions of pre-flush liquid, sand-carrying liquid or displacement liquid. Then the prepared pre-flush liquid, sand-carrying liquid and displacement liquid are transported to the interior of the corresponding first storage tank, second storage tank and third storage tank through the distribution pump 20.

[0018] (3) The level gauges inside the first, second, and third storage tanks can monitor the remaining amount of pre-filled liquid, sand-carrying liquid, and displacement liquid inside them, and can detect and promptly adjust the liquid when the remaining amount of pre-filled liquid, sand-carrying liquid, and displacement liquid is low.

[0019] (4) The filter can filter out large particles of debris in the pre-fluid, sand-carrying fluid and displacement fluid, and then supply them to the fluid supply manifold to avoid excessive debris from clogging the subsequent pipeline and affecting the construction. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the automatic monitoring and replenishment device for hydraulic fracturing fluid in this utility model.

[0021] Figure 2 This is a schematic diagram of the structure of the first storage tank, the second storage tank, and the third storage tank in this utility model. Detailed Implementation

[0022] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are not intended to limit the present invention or its application or use in any way. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete, and to fully express the scope of the present invention to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0023] The terms "first," "second," and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "comprising" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0024] like Figure 1 and 2As shown, an automatic monitoring and replenishment device for hydraulic fracturing fluid is disclosed, including a mixing tank 4, a first storage tank 1, a second storage tank 2, a third storage tank 3, a distribution pump 20, a supply pump 5, a filter 6, and a supply manifold 7. The mixing tank 4 is connected to the input end of the distribution pump 20, and the output end of the distribution pump 20 is connected to the first storage tank 1, the second storage tank 2, and the third storage tank 3 respectively through a second valve 10. The first storage tank 1 is connected to the supply pump 5 through a third valve 11, the second storage tank 2 is connected to the supply pump 5 through a fourth valve 12, and the third storage tank 3 is connected to the supply pump 5 through a third valve 11. The fifth valve 13 is connected to the input end of the liquid supply pump 5; the output end of the liquid supply pump 5 is connected to the liquid supply manifold 7, and the liquid supply manifold 7 is connected to the seventh valve 18 for discharging residual liquid inside; the first storage tank 1, the second storage tank 2, and the third storage tank 3 are respectively equipped with level gauges 19 for monitoring the real-time liquid level inside; in this embodiment, the first storage tank 1, the second storage tank 2, and the third storage tank 3 respectively contain pre-treatment liquid, sand-carrying liquid, and displacement liquid, and during construction, the third valve 11, the fourth valve 12, and the fifth valve 13 can be controlled as needed. The on / off switching of pump 5 quickly switches the pumping of pre-flush liquid, sand-carrying liquid, and displacement liquid, ensuring the continuity of construction. The mixing tank 4 is used to prepare pre-flush liquid, sand-carrying liquid, or displacement liquid according to different proportions. The prepared pre-flush liquid, sand-carrying liquid, and displacement liquid are then transported by distribution pump 20 to the corresponding first storage tank 1, second storage tank 2, and third storage tank 3 for storage. The level gauges inside the first storage tank 1, second storage tank 2, and third storage tank 3 can monitor the level of the pre-flush liquid, sand-carrying liquid, and displacement liquid within them. The remaining liquid levels are monitored to detect and promptly adjust the levels when the pre-fluid, sand-carrying fluid, and displacement fluid are low. The level gauge is connected to the controller, which is equipped with an alarm. The controller has a preset lower limit for the liquid level. When the liquid level reaches the lower limit, the alarm is activated to remind relevant personnel to adjust the liquid levels to avoid affecting construction. Filter 6 can filter out large particles of impurities from the pre-fluid, sand-carrying fluid, and displacement fluid before supplying them to the liquid supply manifold 7, preventing excessive impurities from clogging subsequent pipelines and affecting construction.

[0025] In some embodiments, a protective valve 17 is connected to the pipeline between the filter 6 and the liquid supply manifold 7, and the output end of the protective valve 17 is connected to a waste liquid tank 8. During construction, if the liquid supply manifold 7 and its subsequent pipelines experience blockage or other flow-blocking failures, the pressure in the pipeline between the filter 6 and the liquid supply manifold 7 will increase. When the pressure exceeds the threshold of the protective valve 17, the protective valve 17 will open to discharge the liquid, thereby protecting the pipeline.

[0026] In some embodiments, the output end of the seventh valve 18 is connected to the waste liquid tank 8; during the initial stage of switching between pre-fluid, sand-carrying liquid and replacement liquid, the seventh valve 18 can be opened for a period of time to discharge the liquid supply manifold 7 and the residual liquid in the pipeline before transportation.

[0027] In some embodiments, a first pressure sensor 14 is connected to the pipeline at the input end of the filter 6, a second pressure sensor 15 is connected to the pipeline at the output end of the filter 6, and a sixth valve 16 is connected to the filter for discharging the filtered dirt inside; by subtracting the pressure values ​​collected by the first pressure sensor 14 and the second pressure sensor 15, when the difference is higher than a set value, the sixth valve 16 is opened to discharge the filtered dirt inside.

[0028] In some embodiments, a first valve 9 is connected to the pipeline between the distribution pump 20 and the second valve 10. After cleaning the mixing tank 4, the first valve 9 can be opened to discharge the waste liquid inside the mixing tank 4.

[0029] In some embodiments, a metering pump 21 is connected to the mixing tank 4. The metering pump 21 is used to pump a metered amount of water into the mixing tank 4. When preparing the pre-conditioning liquid, sand-carrying liquid, and displacement liquid, a metered amount of water can be pumped into the mixing tank 4 through the metering pump 21. Then, the corresponding components are added into the mixing tank 4 manually or by equipment. Then, the stirring mechanism inside the mixing tank 4 is started to stir and mix evenly.

[0030] In some embodiments, a heater 23 is provided inside the first storage tank 1, the second storage tank 2, and the third storage tank 3; a circulation pump 22 is connected to the first storage tank 1, the second storage tank 2, and the third storage tank 3, with the input end of the circulation pump 22 connected to the bottom of the first storage tank 1, the second storage tank 2, and the third storage tank 3, and the output end of the circulation pump 22 connected to the top of the corresponding first storage tank 1, the second storage tank 2, and the third storage tank 3.

[0031] In some embodiments, an eighth valve 24 is connected between the mixing tank 4 and the liquid supply pump 5 via a pipeline. During construction, if it is necessary to temporarily pump liquids with other proportions, the liquids can be prepared by mixing tank 4 and then the eighth valve 24 can be opened to directly pump the temporarily prepared liquids to the liquid supply manifold 7 for construction use.

[0032] In some embodiments, the automatic monitoring and replenishment device for hydraulic fracturing fluid also includes a controller and an audible and visual alarm. The level gauge 19 and the audible and visual alarm are both connected to the controller. The controller has a preset lower limit value for the liquid level. When the liquid level reaches the lower limit, the controller activates the alarm to remind relevant personnel to prepare the liquid in order to avoid affecting the construction.

[0033] The various embodiments of this utility model have now been described in detail. To avoid obscuring the concept of this utility model, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0034] The embodiments described above only illustrate some implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An automatic monitoring and replenishment device for hydraulic fracturing fluid, characterized in that: The system includes a mixing tank, a first storage tank, a second storage tank, a third storage tank, a distribution pump, a supply pump, a filter, and a supply manifold. The mixing tank is connected to the input of the distribution pump, and the output of the distribution pump is connected to the first, second, and third storage tanks respectively via a second valve. The first storage tank is connected to the supply pump via a third valve, the second storage tank is connected to the supply pump via a fourth valve, and the third storage tank is connected to the input of the supply pump via a fifth valve. The output of the supply pump is connected to the supply manifold, and a seventh valve is connected to the supply manifold for discharging residual liquid inside. The first, second, and third storage tanks are each equipped with a level gauge for monitoring their real-time liquid level.

2. The automatic monitoring and replenishment device for hydraulic fracturing fluid according to claim 1, characterized in that: A protective valve is connected to the pipeline between the filter and the liquid supply manifold, and the output end of the protective valve is connected to a waste liquid tank.

3. The automatic monitoring and replenishment device for hydraulic fracturing fluid according to claim 2, characterized in that: The output end of the seventh valve is connected to the waste liquid tank.

4. The automatic monitoring and replenishment device for hydraulic fracturing fluid according to claim 1, characterized in that: A first pressure sensor is connected to the pipeline at the input end of the filter, a second pressure sensor is connected to the pipeline at the output end of the filter, and a sixth valve is connected to the filter for discharging the filtered dirt inside.

5. The automatic monitoring and replenishment device for hydraulic fracturing fluid according to claim 1, characterized in that: A first valve is connected to the pipeline between the distribution pump and the second valve.

6. The automatic monitoring and replenishment device for hydraulic fracturing fluid according to claim 1, characterized in that: The mixing tank is connected to a metering pump, which is used to pump a fixed amount of water into the mixing tank.

7. The automatic monitoring and replenishment device for hydraulic fracturing fluid according to claim 1, characterized in that: Each of the first, second, and third storage tanks is equipped with a heater; each of the first, second, and third storage tanks is connected to a circulation pump, with the input end of the circulation pump connected to the bottom of the first, second, and third storage tanks and the output end of the circulation pump connected to the top of the corresponding first, second, and third storage tanks.

8. The automatic monitoring and replenishment device for hydraulic fracturing fluid according to claim 1, characterized in that: An eighth valve is connected to the mixing tank and the liquid supply pump via a pipeline.

9. The automatic monitoring and replenishment device for hydraulic fracturing fluid according to claim 1, characterized in that: It also includes a controller and an audible and visual alarm, both of which are connected to the controller.

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