Degradable fiber filling device for oil field fracturing

Abstract

The invention relates to the technical field of oilfield exploitation, and discloses a degradable fiber filling device for oilfield fracturing, which comprises a tank body, the lower surface of the tank body is fixedly connected with a conical pipe, the edge of the lower surface of the conical pipe is fixedly connected with a plurality of supporting legs, a mixing mechanism is arranged above the tank body, and the mixing mechanism is arranged above the tank body. A mixing mechanism is arranged in the tank body, a metering mechanism is arranged above the mixing mechanism, the mixing mechanism comprises an external thread, the external thread is arranged above the outer surface of the tank body, and a threaded cover is arranged above the upper surface of the tank body. According to the degradable fiber filling device for oil field fracturing, weighing sensors are installed on the left side and the right side of the upper surface of a threaded cover, the amount of fibers and sand-carrying liquid put into a storage barrel are accurately controlled through the weighing sensors, and the fibers and the sand-carrying liquid enter the tank body through a discharging pipe and a liquid outlet pipe correspondingly; therefore, the number and distribution of the fibers can be flexibly and accurately adjusted according to different geological conditions.

Description

Technical Field

[0001] This invention relates to the field of oilfield development technology, specifically to a biodegradable fiber injection device for oilfield fracturing. Background Technology

[0002] Oilfield fracturing, also known as hydraulic fracturing or hydraulic fracture, is a production enhancement measure used to increase the output of oil and gas wells. This technology is mainly applied to low-permeability reservoirs, such as shale gas and tight sandstone oil and gas fields. By injecting high-pressure fluid (usually a mixture of water, sand and a small amount of chemical additives) deep underground, fractures in the formation can be created or enlarged, thereby increasing the flow channels for oil and gas, allowing more oil and gas to flow into the wellbore and be extracted.

[0003] In the process of oil and gas extraction, fracturing is a key technology that creates fractures by injecting high-pressure fluids into the ground, thereby increasing oil and gas production. In order to improve the fracturing effect and reduce the environmental impact, researchers have begun to explore the use of biodegradable fiber materials as part of the proppant. These fibers can help keep the fractures open and can decompose naturally over time without causing long-term environmental pollution. However, traditional injection equipment has difficulty in accurately controlling the quantity and distribution of biodegradable fibers, which limits its application effect. Summary of the Invention

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a biodegradable fiber injection device for oilfield fracturing, which has the advantages of flexibly and accurately adjusting the quantity and distribution of fibers according to different geological conditions, thus solving the problems mentioned in the background art.

[0005] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: a biodegradable fiber injection device for oilfield fracturing, comprising a tank body, a tapered tube fixedly connected to the lower surface of the tank body, a plurality of support legs fixedly connected to the lower surface edge of the tapered tube, a mixing mechanism disposed above the tank body, a metering mechanism disposed above the mixing mechanism, the mixing mechanism including an external thread disposed above the outer surface of the tank body, a threaded cap disposed above the upper surface of the tank body, a plurality of handles fixedly connected to the outer surface of the threaded cap, and the metering mechanism including two weighing sensors. The bottom of the load cell is fixedly installed on the middle of the left and right sides of the upper surface of the threaded cover. A storage cylinder is provided on the upper surface of the load cell. A sealing plate is provided above the storage cylinder. A cover plate is fixedly connected to the upper surface of the sealing plate. A first handle is fixedly connected to the middle of the upper surface of the cover plate. A discharge pipe is fixedly connected to the lower middle of the right side of the left storage cylinder. A rectangular groove is opened in the middle of the front of the discharge pipe. A sealing plate is provided on the outside of the front of the rectangular groove. A second handle is fixedly connected to the middle of the front of the sealing plate. A liquid outlet pipe is fixedly connected to the lower middle of the left side of the right storage cylinder. A third control valve is provided in the middle of the front of the liquid outlet pipe.

[0006] Preferably, a motor is fixedly installed in the middle of the upper surface of the threaded cover, a rotating rod is fixedly connected to the bottom of the motor, and a number of blades are fixedly connected to the outer surface of the rotating rod.

[0007] The motor drives the blades on the outer surface to rotate inside the tank via the rotating rod at the bottom, which mixes and crushes the fibers and sand-carrying liquid inside, ensuring that the fibers are evenly distributed in the liquid.

[0008] Preferably, a control device is fixedly installed on the center of the front of the tank, a discharge pipe is fixedly connected to the center of the lower surface of the tank, and a first control valve is provided on the center of the right side of the discharge pipe.

[0009] The control equipment is used to control the operation and stop of various electrical devices in the device, as well as to understand the status and changes of various data in real time. The material inside the tank is discharged out through the discharge pipe, and the first control valve is used to control the flow of the discharge pipe.

[0010] Preferably, a number of sampling tubes are fixedly connected to the middle right side of the tank, and a second control valve is provided in the middle front of the sampling tube.

[0011] Preferably, a liquid sighting tube is fixedly connected to the middle left side of the tank.

[0012] The sampling tubes are connected to the inside of the tank, and the three sampling tubes correspond to the upper, middle and lower areas inside the tank, respectively. This allows for good sampling and observation of the materials inside the tank, making it easier for staff to understand the condition of the materials inside the tank. The second control valve is used to control the flow of the sampling tubes, and the sight glass allows operators to monitor the liquid level inside the tank in real time.

[0013] Preferably, a placement plate is fixedly connected to the upper part of the middle of the back of the tank, an ultrasonic generator is fixedly installed on the upper surface of the placement plate, and a transducer is provided in the middle of the lower part of the back of the tank.

[0014] An ultrasonic generator is installed above the placement plate. The ultrasonic generator produces a high-frequency electrical signal, which is transmitted to the transducer and converted into mechanical vibration of the same frequency. The mechanical vibration is transmitted to the material inside the tank, forming ultrasonic waves and improving the mixing efficiency of the fibers.

[0015] Compared with the prior art, the present invention provides a biodegradable fiber injection device for oilfield fracturing, which has the following beneficial effects: 1. The biodegradable fiber injection device for oilfield fracturing uses weighing sensors installed on both sides of the threaded cover to precisely control the amount of fiber and sand-carrying fluid injected into the storage cylinder. The fiber and sand-carrying fluid enter the interior of the tank through the discharge pipe and liquid discharge pipe, respectively, thus achieving the ability to flexibly and accurately adjust the quantity and distribution of fiber according to different geological conditions.

[0016] 2. The biodegradable fiber injection device for oilfield fracturing uses a motor mounted on the upper surface of the threaded cover. The motor drives the blades on the outer surface to rotate inside the tank via a rotating rod at the bottom. An ultrasonic generator and transducer are set on the back. The ultrasonic generator transmits electrical signals to the transducer, which converts them into mechanical vibrations, thereby achieving the effect of fully mixing the fiber and the sand-carrying fluid. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the front view structure of the present invention; Figure 3 This is a schematic diagram of the structure of the present invention in frontal sectional view; Figure 4 This is a schematic diagram of the rear view structure of the present invention.

[0018] The components are as follows: 1. Tank body; 101. Conical tube; 102. Support leg; 103. Control equipment; 104. Discharge pipe; 105. First control valve; 106. Sampling tube; 107. Second control valve; 108. Liquid sight tube; 109. Placement plate; 110. Ultrasonic generator; 111. Transducer; 2. Mixing mechanism; 201. External thread; 202. Threaded cap; 203. Handle; 204. Motor; 205. Rotating rod; 206. Blade; 3. Metering mechanism; 301. Weighing sensor; 302. Storage cylinder; 303. Sealing plate; 304. Cover plate; 305. First handle; 306. Discharge pipe; 307. Rectangular groove; 308. Sealing plate; 309. Second handle; 310. Liquid outlet pipe; 311. Third control valve. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1-4 A biodegradable fiber injection device for oilfield fracturing includes a tank 1. A tapered tube 101 is fixedly connected to the lower surface of the tank 1. A number of support legs 102 are fixedly connected to the lower edge of the tapered tube 101. A mixing mechanism 2 is provided above the tank 1. A metering mechanism 3 is provided above the mixing mechanism 2. The mixing mechanism 2 includes an external thread 201, which is located above the outer surface of the tank 1. A threaded cover 202 is provided above the upper surface of the tank 1. A number of handles 203 are fixedly connected to the outer surface of the threaded cover 202. The tapered tube 101 facilitates the falling of materials inside the tank 1. The support legs 102 support the tank 1. The threaded cover 202 can be screwed onto the top of the tank 1 through the external thread 201, sealing its interior while facilitating disassembly and assembly. The handles 203 facilitate the operator to rotate the threaded cover 202. The measuring mechanism 3 includes two load cells 301. The bottoms of the two load cells 301 are fixedly installed on the left and right sides of the upper surface of the threaded cover 202. A storage cylinder 302 is provided on the upper surface of the load cells 301. A sealing disc 303 is provided above the storage cylinder 302. A cover plate 304 is fixedly connected to the upper surface of the sealing disc 303. A first handle 305 is fixedly connected to the center of the upper surface of the cover plate 304. The left side of the storage cylinder 302... A discharge pipe 306 is fixedly connected to the lower center of the right side. A rectangular groove 307 is formed in the center of the front of the discharge pipe 306. A sealing plate 308 is provided on the outer side of the front of the rectangular groove 307. A second handle 309 is fixedly connected to the center of the front of the sealing plate 308. A liquid outlet pipe 310 is fixedly connected to the lower center of the left side of the right storage cylinder 302. A third control valve 311 is provided in the center of the front of the liquid outlet pipe 310. A weighing sensor 301 can monitor the amount of fiber and sand-carrying liquid inside the storage cylinder 302. Precise control and measurement are performed to ensure compliance with requirements. The sealing disc 303 can be fitted into the inner wall of the storage cylinder 302. The cover disc 304 can cover the upper surface of the storage cylinder 302 through the bottom sealing disc 303, sealing its interior. The first handle 305 facilitates the operator to remove the cover disc 304. The discharge pipe 306 connects between the middle right side of the left storage cylinder 302 and the middle left side of the upper surface of the threaded cover 202. Fibers inside the left storage cylinder 302 can enter through the discharge pipe 306. Inside the tank 1, a rectangular groove 307 runs through the center of the front of the discharge pipe 306. A sealing plate 308 can be inserted into the rectangular groove 307 to block it and control its flow. A second handle 309 allows the operator to easily remove the sealing plate 308. The liquid outlet pipe 310 is connected between the right storage cylinder 302 and the threaded cap 202. The sand-carrying liquid inside the right storage cylinder 302 can enter the tank 1 through the liquid outlet pipe 310. A third control valve 311 is used to control its flow effect.

[0021] Specifically, such as Figure 3 As shown, a motor 204 is fixedly installed in the middle of the upper surface of the threaded cover 202, a rotating rod 205 is fixedly connected to the bottom of the motor 204, and a number of blades 206 are fixedly connected to the outer surface of the rotating rod 205.

[0022] Through the above technical solution, the motor 204 drives the blades 206 on the outer surface to rotate inside the tank 1 via the rotating rod 205 at the bottom, so as to mix, crush and stir the fibers and sand-carrying liquid inside, ensuring that the fibers are evenly distributed in the liquid.

[0023] Specifically, such as Figure 1 and Figure 2As shown, a control device 103 is fixedly installed in the center of the front of the tank body 1, and a feed pipe 104 is fixedly connected in the center of the lower surface of the tank body 1. A first control valve 105 is provided in the center of the right side of the feed pipe 104.

[0024] Through the above technical solution, the control device 103 is used to control the operation and stop of various electrical devices in the device, and to understand the status and changes of various data in real time. The material inside the tank 1 is discharged outward through the discharge pipe 104, and the first control valve 105 is used to control the flow of the discharge pipe 104.

[0025] Specifically, such as Figure 1 and Figure 2 As shown, a number of sampling tubes 106 are fixedly connected to the middle right side of the tank body 1, and a second control valve 107 is provided in the middle front of the sampling tube 106. A liquid sight tube 108 is fixedly connected to the middle left side of the tank body 1.

[0026] Through the above technical solution, the sampling tube 106 is connected to the inside of the tank 1, and the three sampling tubes 106 correspond to the upper, middle and lower areas inside the tank 1 respectively, which can effectively sample and observe the materials inside, making it easier for staff to understand the condition of the materials inside the tank 1. The second control valve 107 is used to control the flow of the sampling tube 106, and the liquid sight tube 108 allows operators to understand the liquid level inside the tank 1 in real time.

[0027] Specifically, such as Figure 4 As shown, a placement plate 109 is fixedly connected to the upper part of the middle of the back side of the tank 1, an ultrasonic generator 110 is fixedly installed on the upper surface of the placement plate 109, and a transducer 111 is provided in the middle of the lower part of the back side of the tank 1.

[0028] Through the above technical solution, an ultrasonic generator 110 is installed above the placement plate 109. The ultrasonic generator 110 generates a high-frequency electrical signal, which is transmitted to the transducer 111 and converted into mechanical vibration of the same frequency. The mechanical vibration is transmitted to the material inside the tank 1 to form ultrasonic waves, thereby improving the mixing efficiency of the fibers.

[0029] During use, the operator places the fiber and sand-carrying liquid into two storage cylinders 302 respectively, and covers the storage cylinders 302 with the sealing plate 303 at the bottom of the cover plate 304 to seal the inside. The liquid level inside the tank 1 is observed through the liquid sight tube 108. The material inside the tank 1 is sampled and checked from time to time through three sampling tubes 106 to determine whether fiber and sand-carrying liquid need to be added. When addition is needed, the sealing plate 308 is pulled out, the third control valve 311 is opened, and the data change transmitted to the control device 103 by the weighing sensor 301 controls the amount of fiber and sand-carrying liquid added. After addition is completed, the sealing plate 308 is inserted back and the third control valve 311 is closed. The motor 204 drives the blades 206 to stir and mix the fiber and sand-carrying liquid through the rotating rod 205 at the bottom to ensure that it is evenly distributed. Finally, the first control valve 105 is opened to discharge it.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A biodegradable fiber injection device for oilfield fracturing, comprising a tank (1), characterized in that: A tapered tube (101) is fixedly connected to the lower surface of the tank (1). A number of support legs (102) are fixedly connected to the lower edge of the tapered tube (101). A mixing mechanism (2) is provided above the tank (1). A metering mechanism (3) is provided above the mixing mechanism (2). The mixing mechanism (2) includes an external thread (201). The external thread (201) is located above the outer surface of the tank (1). A threaded cover (202) is provided above the upper surface of the tank (1). A number of handles (203) are fixedly connected to the outer surface of the threaded cover (202). The metering mechanism (3) includes two weighing sensors (301). The bottoms of the two weighing sensors (301) are respectively fixedly installed on the middle of the left and right sides of the upper surface of the threaded cover (202). The weighing sensor (301) has a storage cylinder (302) on its upper surface. A sealing disc (303) is provided above the storage cylinder (302). A cover disc (304) is fixedly connected to the upper surface of the sealing disc (303). A first handle (305) is fixedly connected to the middle of the upper surface of the cover disc (304). A discharge pipe (306) is fixedly connected to the lower middle of the right side of the storage cylinder (302) on the left side. A rectangular groove (307) is opened in the middle of the front side of the discharge pipe (306). A sealing plate (308) is provided on the outside of the front side of the rectangular groove (307). A second handle (309) is fixedly connected to the middle of the front side of the sealing plate (308). A liquid outlet pipe (310) is fixedly connected to the lower middle of the left side of the storage cylinder (302) on the right side. A third control valve (311) is provided in the middle of the front side of the liquid outlet pipe (310).

2. The biodegradable fiber injection device for oilfield fracturing according to claim 1, characterized in that: A motor (204) is fixedly installed in the middle of the upper surface of the threaded cover (202). A rotating rod (205) is fixedly connected to the bottom of the motor (204). A number of blades (206) are fixedly connected to the outer surface of the rotating rod (205).

3. The biodegradable fiber injection device for oilfield fracturing according to claim 1, characterized in that: A control device (103) is fixedly installed in the center of the front of the tank (1), and a feed pipe (104) is fixedly connected in the center of the lower surface of the tank (1). A first control valve (105) is provided in the center of the right side of the feed pipe (104).

4. The biodegradable fiber injection device for oilfield fracturing according to claim 1, characterized in that: A number of sampling tubes (106) are fixedly connected to the middle right side of the tank (1), and a second control valve (107) is provided in the middle front of the sampling tube (106).

5. The biodegradable fiber injection device for oilfield fracturing according to claim 1, characterized in that: A liquid sight tube (108) is fixedly connected to the middle left side of the tank (1).

6. The biodegradable fiber injection device for oilfield fracturing according to claim 1, characterized in that: A placement plate (109) is fixedly connected to the upper part of the back side of the tank (1), an ultrasonic generator (110) is fixedly installed on the upper surface of the placement plate (109), and a transducer (111) is provided in the lower part of the back side of the tank (1).

Images