Fluid preparation device for mixing fracturing fluid of oil and gas field

What is AI technical title?
AI technical title is built by Patsnap AI team. It summarizes the technical point description of the patent document.
By designing a liquid dispensing device for oil and gas field fracturing fluid mixing including a stirrer and a double screw conveyor, the problem of lack of proppant pretreatment and large land space in traditional equipment is solved, and the quality of sand-carrying fracturing fluid is improved. and reduce the effect of equipment space.

CN222468917UActive Publication Date: 2025-02-14CHENGDU UREK ENERGY TECH CO LTD

View PDF 0 Cites 0 Cited by

Patent Information

Application Number: CN202420394774.6
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-03-01
Publication Date: 2025-02-14
Estimated Expiration: 2034-03-01

AI Technical Summary

Technical Problem

Traditional mixing equipment lacks pretreatment of proppant during use, which affects the quality of sand-carrying fracturing fluid and occupies a large space.

Method used

A liquid dispensing device for mixing fracturing fluid in oil and gas field is designed, including a protective box, a proppant conveying mechanism, a power mechanism and a capping mechanism. The device pretreats the proppant through an agitator and a double screw conveyor, and is inspected by a capping mechanism or extracting the proppant in the discharge part.

Benefits of technology

The device reduces the floor space and improves the quality of sand-carrying fracturing fluid through pretreatment and detection of proppant.

✦ Generated by Eureka AI based on patent content.

Smart Images

Figure CN222468917U_ABST

Patent Text Reader

Abstract

The utility model discloses a fluid preparation device for mixing fracturing fluid in an oil and gas field, which relates to the technical field of mixing and comprises a protective box, a proppant conveying mechanism, a power mechanism and a sealing cover mechanism, and the proppant conveying mechanism, the power mechanism and the sealing cover mechanism are arranged at the top of the protective box. A mixing tank is arranged in the protection box; the proppant conveying mechanism comprises a feeding part, a discharging part and a conveying part, the conveying part is horizontally arranged on the first supporting frame, a double-spiral conveyor is arranged in the conveying part, the feeding part is arranged on the second supporting frame, the bottom of the feeding part is communicated with the conveying part, a stirrer is arranged in the feeding part, the discharging part is vertically arranged, the bottom of the discharging part is communicated with the mixing tank, and one end of the conveying part is communicated with the discharging part; the power mechanism is used for driving the stirrer and the double-screw conveyor; the cover sealing mechanism is used for sealing an opening in the top of the discharging part. The stirrer in the feeding part and the double-spiral conveyor at the bottom of the feeding part can be used for pre-treating the proppant, the state of the proppant can be observed at the discharging part or part of the proppant can be extracted for detection, and therefore the quality of the sand-carrying fracturing fluid is improved.

Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to the technical field of mixing, in particular to a liquid mixing device for mixing oil and gas field fracturing fluid. Background Art

[0002] In oil production, after a period of production, the oil wells often experience reduced permeability and no oil production. In order to increase production, the industry adopts fracturing technology, which uses high-volume and high-pressure sand-carrying fracturing fluid pumping operations to inject sand-carrying fracturing fluid into the ground, forming cracks in the target layer for the release of oil and gas.

[0003] Mixing equipment is one of the key equipment in fracturing operations. Its function is to mix proppant, fracturing fluid and various additives into sand-carrying fracturing fluid in a certain proportion, and supply the mixed sand-carrying fracturing fluid to the fracturing equipment. During the use of traditional mixing equipment, proppant is directly put into the mixing equipment, and there is a lack of pretreatment of the proppant, which affects the quality of the sand-carrying fracturing fluid. In addition, traditional mixing equipment also has problems such as large space occupation. Therefore, this scheme designs a new fracturing fluid mixing equipment. Utility Model Content

[0004] In order to solve the deficiencies of the prior art, the utility model provides a liquid preparation device for mixing oil and gas field fracturing fluid, which can pretreat the proppant and improve the quality of the sand-carrying fracturing fluid.

[0005] In order to achieve the purpose of this utility model, the following scheme is proposed:

[0006] A liquid mixing device for mixing oil and gas field fracturing fluid comprises a protection box and a proppant conveying mechanism, a power mechanism and a capping mechanism arranged on the top of the protection box.

[0007] A mixing tank is provided in the protective box;

[0008] The proppant conveying mechanism includes a feeding part, a feeding part and a conveying part. The conveying part is horizontally arranged on the first support frame, and a double screw conveyor is arranged inside the feeding part. The feeding part is arranged on the second support frame, and its bottom is connected to the conveying part. A stirrer is arranged inside the feeding part. The feeding part is vertically arranged, and its bottom is connected to the mixing tank. One end of the conveying part is connected to the feeding part.

[0009] The power mechanism is used to drive the agitator and the double screw conveyor;

[0010] The capping mechanism is used to close the opening at the top of the unloading part.

[0011] Furthermore, the feeding part includes a cylindrical bin, an inverted frustum-shaped bin and a hemispherical bin from top to bottom, the agitator is horizontally arranged, and its agitator rod horizontally penetrates the feeding part and is connected to the power mechanism, and the through hole is located between the inverted frustum-shaped bin and the hemispherical bin.

[0012] Furthermore, the stirring rod is rotatably matched with the support frame three, and the support frame three is located outside the feeding part.

[0013] Furthermore, the power mechanism includes a box body and a chain arranged in the box body, two first motors and two sprockets. The two central axes of the double screw conveyor pass through the box body and are respectively connected to a sprocket. The chain is sleeved on the two sprockets. One of the output shafts of the first motor is connected to one of the sprockets, and the stirring rod passes through the box body and is connected to the other first motor.

[0014] Furthermore, the capping mechanism includes a cover plate, a linear stroke component, a vertical plate and two regulating plates. The two regulating plates are symmetrically arranged at the top of the support frame. The regulating plate is provided with a slide groove running through it. The slide groove is inclined downward in the direction of the unloading part. The vertical plate is located between the two regulating plates. The linear stroke component is arranged at the top of the support frame, which is used to move the vertical plate horizontally. The cover plate covers the top of the unloading part. A connecting plate is provided on the top of the cover plate. The connecting plate slides up and down to fit in the vertical plate. The two sides of the connecting plate are respectively slidably fitted in the slide groove through columns.

[0015] Furthermore, when the column is located at the lowest end of the chute, the cover plate just covers the top of the unloading portion.

[0016] Furthermore, a vertical bar is provided on one side of the vertical plate facing the cover plate, and the top and bottom of the vertical bar are respectively connected to the vertical plate through horizontal bars, and the vertical plate slides through the connecting plate.

[0017] Furthermore, the linear travel component includes a second motor and a screw rod, the output shaft of the second motor is connected to the screw rod, the other end of the screw rod is rotatably matched with the base, the screw rod thread passes through the vertical plate, and the two sides of the vertical plate are tightly attached to the corresponding control plates.

[0018] The beneficial effects of the utility model are as follows: compared with the prior art, the utility model reduces the occupied space, and can use the agitator in the feeding part and the double screw conveyor at the bottom of the feeding part to pretreat the proppant, and can also observe the state of the proppant in the unloading part or extract part of the proppant for testing, thereby improving the quality of the sand-carrying fracturing fluid. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view of the liquid dispensing device of the embodiment;

[0020] Figure 2 A top view of a liquid dispensing device according to an embodiment;

[0021] Figure 3 A structural diagram of a capping mechanism in an embodiment;

[0022] Figure markings: protective box-1, feeding part-21, support frame two-211, agitator-212, stirring rod-213, support frame three-214, unloading part-22, conveying part-23, support frame one-231, double screw conveyor-232, power mechanism-3, box body-31, capping mechanism-4, cover plate-41, connecting plate-411, column-412, vertical plate-42, vertical bar-421, horizontal bar-422, regulating plate-43, slide groove-431, support frame four-44, second motor-451, screw rod-452. DETAILED DESCRIPTION

[0023] like Figure 1 As shown, this embodiment provides a liquid mixing device for mixing oil and gas field fracturing fluid, including a protection box 1 and a proppant conveying mechanism, a power mechanism 3, and a capping mechanism 4 arranged on the top of the protection box 1.

[0024] A horizontal mixing tank is provided in the protective box 1. The so-called horizontal means that the mixing tank is placed horizontally. Compared with the vertical mixing tank, the horizontal mixing tank can make the entire liquid preparation device structure more compact and reduce the height. The mixing tank is used to mix proppant, fracturing fluid and / or other additives. The specific structure of the mixing tank is a conventional setting and will not be elaborated here.

[0025] The proppant delivery mechanism is used to put the proppant into the mixing tank, and the specific implementation method is as follows: Figure 1 , Figure 2 As shown, the proppant conveying mechanism includes a feeding part 21, a feeding part 22 and a conveying part 23. The conveying part 23 is horizontally arranged on the top of the support frame 1 231, and a double screw conveyor 232 is arranged inside the conveying part 23. The feeding part 21 is vertically arranged on the support frame 211, and the bottom of the feeding part 21 is connected to the conveying part 23. An agitator 212 is arranged inside the feeding part 21, and the feeding part 22 is vertically arranged. The bottom of the feeding part 22 is connected to the mixing tank, one end of the conveying part 23 is vertically connected to the side wall of the feeding part 22, and the conveying part 23 is connected to the feeding part 22. The power mechanism 3 is used to drive the agitator 212 and the double screw conveyor 232.

[0026] In the above scheme, the stirrer 212 is arranged in the feeding part 21, and the function of the stirrer 212 is to disperse and mix the proppant; the function of the double screw conveyor 232 is to further disperse and mix the proppant, and is also used to convey the proppant to the unloading part 22. This structural design of the scheme can not only reduce the space of the entire liquid preparation device, but also pre-treat the proppant and improve the quality of the sand-carrying fracturing fluid.

[0027] More specifically, the feeding part 21 includes a cylindrical bin, an inverted frustum-shaped bin and a hemispherical bin from top to bottom, the agitator 212 is horizontally arranged, and the stirring rod 213 of the agitator 212 horizontally penetrates the feeding part 21 and is connected to the power mechanism 3, and the through hole is located between the inverted frustum-shaped bin and the hemispherical bin, the stirring rod 213 is rotatably matched with the support frame three 214, and the support frame three 214 is located outside the feeding part 21.

[0028] More specifically, the function of the power mechanism 3 is to drive the agitator 212 and the double screw conveyor 232. There are many ways to achieve this function in the prior art. This embodiment adopts the following method: the power mechanism 3 includes a box body 31 and a chain, two first motors and two sprockets arranged in the box body 31. The two central axes of the double screw conveyor 232 pass through the box body 31 and are respectively connected to a sprocket. The chain is sleeved on the two sprockets, one of the first motor output shafts is connected to one of the sprockets, and the stirring rod 213 passes through the box body 31 and is connected to the other first motor.

[0029] The top of the unloading part 22 is opened, and the capping mechanism 4 is used to close or open the opening at the top of the unloading part 22 so that the staff can observe the condition of the proppant inside the unloading part 22, or take out part of the proppant from the unloading part 22 for testing so that the staff can judge whether the pretreated proppant meets the requirements.

[0030] The specific implementation method of the capping mechanism 4 is as follows: Figure 1-Figure 3 As shown, it includes a cover plate 41, a linear stroke component, a vertical plate 42 and two regulating plates 43. The two regulating plates 43 are symmetrically arranged on the top of the support frame four 44. The spacing between the two regulating plates 43 is greater than the outer diameter of the cover plate 41 to prevent the movement of the cover plate 41 from being hindered. The regulating plate 43 is provided with a slide groove 431 running through it, and the slide groove 431 is inclined downward in the direction of the blanking portion 22. The vertical plate 42 is located between the two regulating plates 43. The linear stroke component is arranged on the top of the support frame four 44. The linear stroke component is used to horizontally move the vertical plate 42. The cover plate 41 covers the top of the blanking portion 22. A connecting plate 411 is provided on the top of the cover plate 41. The connecting plate 411 slides up and down to fit with the vertical plate 42. The two sides of the connecting plate 411 slide to fit with the corresponding slide grooves 431 through columns 412 respectively.

[0031] exist Figure 1 , Figure 3In this state, the column 412 is located at the lowest end of the slide groove 431, and the cover plate 41 just covers the top of the discharge portion 22; when the discharge portion 22 needs to be opened, the vertical plate 42 is moved in the direction away from the discharge portion 22 by using the linear stroke assembly, and the vertical plate 42 will carry the connecting plate 411 and the cover plate 41 to move at the same time. Because the column 412 slides in the slide groove 431, the cover plate 41 moves with the vertical plate 42 and also moves along the trajectory of the slide groove 431. In other words, the cover plate 41 moves upward at an angle to open the discharge portion 22.

[0032] More specifically, a vertical bar 421 is provided on the side of the vertical plate 42 facing the cover plate 41 , and the top and bottom of the vertical bar 421 are respectively connected to the vertical plate 42 through horizontal bars 422 , and the vertical plate 42 slides through the connecting plate 411 , and one end of the connecting plate 411 facing the vertical plate 42 is tightly attached to the vertical plate 42 .

[0033] More specifically, in the prior art, there are many ways to implement the linear travel component, such as using a telescopic rod driven by a cylinder, an oil cylinder or a hydraulic pressure. The present embodiment adopts the following method: the output shaft of the second motor 451 is connected to the screw rod 452, the other end of the screw rod 452 is rotatably matched with the base, the screw rod 452 thread passes through the vertical plate 42, the two sides of the vertical plate 42 are close to the corresponding control plate 43, and the bottom of the vertical plate 42 is close to the top surface of the support frame 44.

[0034] In summary, compared with the prior art, the liquid dispensing device in this embodiment reduces the occupied space, can pre-treat the proppant, and can observe the state of the proppant or extract part of the proppant for testing in the unloading part 22, thereby improving the quality of the sand-carrying fracturing fluid.

[0035] The above embodiments are only used to illustrate the technical ideas and features of the utility model, and are not intended to be the only or limit the utility model. Those skilled in the art should understand that various changes or equivalent replacements made to the utility model without departing from the scope of the utility model are within the scope of protection of the utility model.

Claims

1. A liquid preparation device for mixing oil and gas field fracturing fluid, characterized in that: It comprises a protection box (1) and a proppant conveying mechanism, a power mechanism (3) and a capping mechanism (4) arranged on the top of the protection box (1); A mixing tank is provided in the protective box (1); The proppant conveying mechanism comprises a feeding part (21), a feeding part (22) and a conveying part (23); the conveying part (23) is horizontally arranged on a first support frame (231) and is provided with a double screw conveyor (232) inside; the feeding part (21) is arranged on a second support frame (211) and its bottom is connected to the conveying part (23); a stirrer (212) is provided inside the feeding part (21); the feeding part (22) is vertically arranged and its bottom is connected to a mixing tank; one end of the conveying part (23) is connected to the feeding part (22); The power mechanism (3) is used to drive the agitator (212) and the double screw conveyor (232); The capping mechanism (4) is used to close the opening at the top of the unloading portion (22).

2. The liquid preparation device for mixing oil and gas field fracturing fluid according to claim 1, characterized in that: The feeding part (21) comprises, from top to bottom, a columnar bin, an inverted frustum-shaped bin and a hemispherical bin in sequence. The agitator (212) is arranged horizontally, and its agitator rod (213) horizontally penetrates the feeding part (21) and is connected to the power mechanism (3), and the through hole is located between the inverted frustum-shaped bin and the hemispherical bin.

3. The liquid preparation device for mixing oil and gas field fracturing fluid according to claim 2, characterized in that: The stirring rod (213) is rotatably matched with the support frame three (214), and the support frame three (214) is located outside the feeding part (21).

4. The liquid preparation device for mixing oil and gas field fracturing fluid according to claim 2, characterized in that: The power mechanism (3) comprises a box (31) and a chain, two first motors and two sprocket wheels arranged in the box (31); two central shafts of the double screw conveyor (232) penetrate the box (31) and are respectively connected to a sprocket wheel; the chain is sleeved on the two sprocket wheels; one of the first motor output shafts is connected to one of the sprocket wheels; and the stirring rod (213) penetrates the box (31) and is connected to the other first motor.

5. The liquid preparation device for mixing oil and gas field fracturing fluid according to claim 1, characterized in that: The capping mechanism (4) comprises a cover plate (41), a linear stroke component, a vertical plate (42) and two regulating plates (43). The two regulating plates (43) are symmetrically arranged on the top of the support frame (44). The regulating plate (43) is provided with a slide groove (431) penetrating the regulating plate (43). The slide groove (431) is arranged to be inclined downward in the direction of the material discharge portion (22). The vertical plate (42) is located between the two regulating plates (43). The linear stroke component is arranged on the top of the support frame (44) and is used to horizontally move the vertical plate (42). The cover plate (41) covers the top of the material discharge portion (22). A connecting plate (411) is arranged on the top of the cover plate (41). The connecting plate (411) is slidably matched with the vertical plate (42) up and down. Both sides of the connecting plate (411) are slidably matched with the slide groove (431) through columns (412).

6. The liquid preparation device for mixing oil and gas field fracturing fluid according to claim 5, characterized in that: When the column (412) is located at the lowest end of the slide groove (431), the cover plate (41) just covers the top of the lower material portion (22).

7. The liquid preparation device for mixing oil and gas field fracturing fluid according to claim 5, characterized in that: A vertical bar (421) is provided on one side of the vertical plate (42) facing the cover plate (41); the top and bottom of the vertical bar (421) are connected to the vertical plate (42) via horizontal bars (422) respectively; the vertical plate (42) slides through the connecting plate (411).

8. The liquid preparation device for mixing oil and gas field fracturing fluid according to claim 5, characterized in that: The linear travel component comprises a second motor (451) and a screw rod (452). The output shaft of the second motor (451) is connected to the screw rod (452). The other end of the screw rod (452) is rotatably engaged with the base. The screw rod (452) is threadedly passed through the vertical plate (42). Both sides of the vertical plate (42) are closely attached to the corresponding control plates (43).