CN112938359A - Proppant feeding device for oil and gas well fracturing site - Google Patents
Proppant feeding device for oil and gas well fracturing site Download PDFInfo
- Publication number
- CN112938359A CN112938359A CN202110175588.4A CN202110175588A CN112938359A CN 112938359 A CN112938359 A CN 112938359A CN 202110175588 A CN202110175588 A CN 202110175588A CN 112938359 A CN112938359 A CN 112938359A
- Authority
- CN
- China
- Prior art keywords
- sand
- storage box
- sand storage
- oil
- feeding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G33/00—Screw or rotary spiral conveyors
- B65G33/08—Screw or rotary spiral conveyors for fluent solid materials
- B65G33/14—Screw or rotary spiral conveyors for fluent solid materials comprising a screw or screws enclosed in a tubular housing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
- B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
- B65G65/32—Filling devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
- B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
- B65G65/34—Emptying devices
- B65G65/40—Devices for emptying otherwise than from the top
- B65G65/46—Devices for emptying otherwise than from the top using screw conveyors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
- B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
- B65G65/34—Emptying devices
- B65G65/40—Devices for emptying otherwise than from the top
- B65G65/48—Devices for emptying otherwise than from the top using other rotating means, e.g. rotating pressure sluices in pneumatic systems
- B65G65/4881—Devices for emptying otherwise than from the top using other rotating means, e.g. rotating pressure sluices in pneumatic systems rotating about a substantially horizontal axis
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
The invention relates to a proppant feeding device for an oil-gas well fracturing site, which comprises a material conveying mechanism, a plurality of sand storage boxes and a feeding buffer bin, wherein the material conveying mechanism is at least provided with a horizontal conveying section and a sand outlet, and a plurality of sand inlets are arranged on the upper surface of the horizontal conveying section at intervals. The top surface of each sand storage box is provided with a sand inlet hole, and the top of each sand storage box is rotatably connected with a rotary cover plate capable of plugging the sand inlet hole. The bottom of each sand storage box is provided with a sand outlet, a first switch valve is arranged at the sand outlet, each sand storage box is erected above the horizontal conveying section, and each sand outlet is vertically opposite to the corresponding sand inlet. The top and the bottom of the feeding buffer bin are respectively provided with a feeding hole and a discharging hole, the sand outlet is communicated with the feeding hole, and the discharging hole is provided with a second switch valve. The proppant feeding device provided by the invention has the advantages that bag breaking and feeding are not needed, loading, unloading, transportation and storage of fracturing proppants are more convenient, the influence of weather is small, and the sand adding operation efficiency is high.
Description
Technical Field
The invention relates to the field of fracturing operation of oil and gas wells, in particular to a fracturing fluid preparation process, and particularly relates to a proppant feeding device for a fracturing site of an oil and gas well.
Background
In recent years, unconventional oil and gas resource exploration and development, particularly scale development of shale gas and dense gas, are greatly promoted at home and abroad, and one of core technologies is a volume fracturing technology. The fracturing process of the oil and gas well usually needs to be continuously configured with a large amount of fracturing fluid to be injected into a deep stratum, wherein the fracturing fluid needs to be uninterruptedly added with fracturing propping agent (sand), the fracturing propping agent is continuously transported to a fracturing site to be unloaded, stored and added with sand, and the efficiency of the links is improved, so that the whole efficiency of the fracturing operation of the oil and gas well is improved.
At the present stage, the quartz sand, ceramsite and other fracturing propping agents are mainly packaged by ton bags, transported to a fracturing site through a semitrailer, unloaded by a crane, broken and then enter a storage tank for further sand adding operation. Generally, the cost of disposable ton bags used for packaging bags is high, or ton bags capable of being recycled are used, so that the packaging and bag-removing efficiency is low, and the sand adding requirement of the fracturing propping agent cannot be met; meanwhile, the bag breaking process of the ton bag is easily influenced by strong wind, rain and snow weather by hoisting, the flow in the sand feeding process cannot be controlled, and the fracturing operation is influenced to a certain extent.
Therefore, the inventor provides a proppant feeding device for a fracturing site of an oil and gas well by virtue of experience and practice of related industries for many years so as to overcome the defects in the prior art.
Disclosure of Invention
The invention aims to provide a proppant feeding device for an oil-gas well fracturing site, which is free from bag breaking and feeding, more convenient to load, unload, transport and store fracturing proppants, less influenced by weather and high in sand adding operation efficiency.
The object of the invention is thus achieved, a proppant feeding device for use in a fracturing site of an oil or gas well, comprising:
the material conveying mechanism is at least provided with a horizontal conveying section and a sand outlet, and a plurality of sand inlets are arranged on the upper surface of the horizontal conveying section at intervals;
the sand storage boxes are provided with sand inlet holes on the top surfaces, and the top parts of the sand storage boxes are rotatably connected with rotary cover plates capable of plugging the sand inlet holes; a sand outlet is formed in the bottom of each sand storage box, and a first switch valve is arranged at the sand outlet; each sand storage box is erected above the horizontal conveying section, and each sand outlet is arranged opposite to the corresponding sand inlet up and down;
and the top and the bottom of the feeding buffer bin are respectively provided with a feeding port and a discharging port, the sand outlet is communicated with the feeding port, and the discharging port is provided with a second switch valve.
In a preferred embodiment of the invention, each sand storage box comprises a square box frame with open upper and lower ends and a square box body fixedly arranged in the square box frame, the sand inlet hole and the rotary cover plate are arranged on the top surface of the square box body, the sand outlet hole is arranged on the bottom surface of the square box body, and a gap is reserved between the sand outlet hole and the lower end port of the square box frame.
In a preferred embodiment of the present invention, the bottom surface of the square box is a first conical surface with a diameter decreasing downward, and the sand outlet is disposed at the bottom end of the first conical surface.
In a preferred embodiment of the present invention, the proppant feeding device for use in a fracturing site of an oil and gas well further comprises a support frame; the material conveying mechanism is fixedly arranged on the support frame, and a plurality of first bulges are arranged on the support frame and correspond to the positions of the sand inlets; the top of the square box frame of each sand storage box is provided with a plurality of second bulges, and the bottom of each sand storage box is provided with a plurality of grooves; each first bulge can be clamped in the corresponding groove, or each second bulge on one sand storage box can be clamped in each groove on the other sand storage box.
In a preferred embodiment of the present invention, the material conveying mechanism includes a first closed screw conveyor arranged horizontally and a second closed screw conveyor arranged obliquely, the first closed screw conveyor constitutes a horizontal conveying section; the discharge end of the first closed type screw conveyor is communicated with the bottom feed end of the second closed type screw conveyor through the adapter tube, and the sand outlet is formed in the top discharge end of the second closed type screw conveyor.
In a preferred embodiment of the invention, a weighing sensor is arranged on the lower surface of the bottom of the first closed-type spiral conveyor, the rotating speed of a motor of the first closed-type spiral conveyor is the same as that of a motor of the second closed-type spiral conveyor, and a rotating speed sensor is arranged on the motor of the first closed-type spiral conveyor; the proppant feeding device for the oil-gas well fracturing site further comprises a controller, and the controller is electrically connected with the first switch valve, the motor of the first closed screw conveyer, the motor of the second closed screw conveyer, the weighing sensor, the rotating speed sensor and the second switch valve.
In a preferred embodiment of the present invention, an electrically driven star-shaped discharge valve is disposed at the discharge port and below the second switch valve, and the electrically driven star-shaped discharge valve is connected to the controller through a frequency converter.
In a preferred embodiment of the invention, a discharge conduit is connected to the outlet end of the electrically driven star-shaped discharge valve.
In a preferred embodiment of the invention, the volume of the feeding buffer bin is the same as the volume of a single sand storage box; the bottom of the feeding buffer bin is a second conical surface with the diameter gradually reduced downwards, and the second switch valve is arranged at the bottom end of the second conical surface.
In a preferred embodiment of the present invention, a position sensor is disposed at the top of the feeding buffer bin, and the position sensor is electrically connected to the controller.
According to the proppant feeding device, the sand storage boxes, the material conveying mechanism and the feeding buffer bin are matched, so that the sand adding efficiency is greatly improved; utilize each sand storage box convenience to load and unload, transport and store fracturing propping agent, replaced traditional disposable ton bag packing, no longer need broken bag feed, it is more simple and convenient to operate, each sand storage box can recycle, has reduced the operation cost, has promoted work efficiency. Meanwhile, the process of adding sand to each sand inlet by using each sand storage box is basically not influenced by weather such as strong wind, rain, snow and the like, so that the sand storage box is more environment-friendly; carry fracturing proppant earlier to feed surge bin through material conveying mechanism, carry the material to fracturing fluid by feed surge bin again and prepare the facility, also can effectively prevent to store up the sand box feed too fast and lead to the proppant to pile up and spill over, the operation is more stable. In addition, each sand storage box, the material conveying mechanism and the feeding buffer bin can be used together in a matched mode, can be used independently or used in other processes, and are high in universality.
Drawings
The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein:
FIG. 1: the invention provides a structural schematic diagram of a proppant feeding device for a fracturing site of an oil-gas well.
FIG. 2: is a perspective view of the sand storage box provided by the invention.
FIG. 3: is a front view of the sand storage box provided by the invention.
FIG. 4: the invention provides a top view of a sand storage box.
FIG. 5: the invention provides a schematic structural diagram of a material conveying mechanism.
FIG. 6: the invention provides a structural schematic diagram of a feeding buffer bin.
The reference numbers illustrate:
1. a sand storage box; 11. a square box frame; 111. a second protrusion; 12. a square box body; 121. a sand inlet hole; 122. a sand outlet; 123. a first conical surface; 13. rotating the cover plate; 14. a first on-off valve;
2. a material conveying mechanism; 21. a first closed screw conveyor; 211. a sand inlet; 22. a second closed screw conveyor; 221. a sand outlet; 23. a transfer tube; 24. a weighing sensor; 25. a rotational speed sensor;
3. a feeding buffer bin; 31. a feed inlet; 32. a discharge opening; 33. a second tapered surface; 34. a second on-off valve; 35. an electrically driven star discharge valve; 36. a discharge conduit; 37. a position sensor.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.
As shown in fig. 1-6, the present embodiment provides a proppant feeding apparatus for use in a fracturing site of an oil and gas well, comprising:
the material conveying mechanism 2 at least comprises a horizontal conveying section and a sand outlet 221, and a plurality of sand inlets 211 are arranged on the upper surface of the horizontal conveying section at intervals;
the sand storage boxes 1 are provided with sand inlet holes 121 on the top surface of each sand storage box 1, and the top of each sand storage box 1 is rotatably connected with a rotary cover plate 13 capable of plugging the sand inlet holes 121; a sand outlet 122 is formed in the bottom of each sand storage box 1, and a first switch valve 14 is arranged at the sand outlet 122; each sand storage box 1 is erected above the horizontal conveying section, and each sand outlet 122 is arranged opposite to the corresponding sand inlet 211 up and down;
and a feeding buffer bin 3, the top and the bottom of which are respectively provided with a feeding port 31 and a discharging port 32, the sand outlet 221 is communicated with the feeding port 31, and the discharging port 32 is provided with a second switch valve 34.
Wherein, the rotary cover plate 13 can be rotatably connected with the top of the sand storage box 1 through a rotating shaft so as to open and close the sand inlet hole 121, and after the rotary cover plate 13 covers the sand inlet hole 121, the rotary cover plate 13 can be fixed with the top of the sand storage box 1 through a plurality of bolts. The first switch valve 14 and the second switch valve 34 may adopt a ball valve, a gate valve, or a butterfly valve, etc., to open or close, and the specific structure is the prior art. The number of the sand inlets 211 is the same as that of the sand storage boxes 1 and is determined as needed, and for example, three sand inlets 211 and three sand storage boxes 1 are provided in the present embodiment. Store the fracturing propping agent in each stores up sand box 1 back, can store in the on-the-spot reserve of fracturing operation, through fork truck with each store up sand box 1 transport to each sand inlet 211 directly over fixed the back alright with carry the fracturing propping agent to feed surge bin 3 through the transport effect of material conveying mechanism 2, in the fracturing fluid preparation facility is given with the fracturing propping agent by feed surge bin 3 again to the preparation of fracturing fluid.
Therefore, the proppant feeding device in the embodiment greatly improves the sand adding efficiency through the matching of the sand storage boxes 1, the material conveying mechanism 2 and the feeding buffer bin 3; utilize each sand storage box 1 to make things convenient for loading and unloading, transportation and storage to fracturing propping agent, replaced traditional disposable ton bag packing, no longer need broken bag feed, it is more simple and convenient to operate, each sand storage box 1 can recycle, has reduced the operation cost, has promoted work efficiency. Meanwhile, the process of adding sand to each sand inlet 211 by using each sand storage box 1 is basically not influenced by weather such as strong wind, rain, snow and the like, so that the sand storage box is more environment-friendly; carry fracturing propping agent to feed surge bin 3 earlier through material conveying mechanism 2, carry the material to fracturing fluid by feed surge bin 3 again and prepare the facility, also can effectively prevent to store up 1 feeds of sand box and too fast and lead to the propping agent to pile up and spill over, and the operation is more stable. In addition, each sand storage box 1, the material conveying mechanism 2 and the feeding buffer bin 3 can be used together in a matched mode, can also be used independently or used in other processes, and are high in universality.
In a specific implementation manner, in order to facilitate transportation and storage of each sand storage box 1, as shown in fig. 1 to 4, each sand storage box 1 includes a square box frame 11 with both open upper and lower ends and a square box body 12 fixedly arranged in the square box frame 11, a sand inlet 121 and a rotary cover plate 13 are arranged on a top surface of the square box body 12, a sand outlet 122 is arranged on a bottom surface of the square box body 12, and a gap is left between the sand outlet 122 and a lower end port of the square box frame 11.
Wherein the top surface of the generally square box 12 is substantially flush with the upper end of the square box rack 11. The square box frame 11 preferably adopts a steel structure frame body formed by a plurality of cross beams and a plurality of longitudinal beams, and the square box body 12 preferably adopts a plurality of steel plates to be welded so as to ensure the structural strength. The size of the sand magazine 1 is determined as required, for example, the length, width and height of the square box frame 11 in this embodiment are 2000mm, 2000mm and 2150mm, respectively, and the design volume of the square box body 12 is 7.5m3The design load is 12 tons.
When the fracturing propping agent is used, the fracturing propping agent is additionally arranged in a finished product sand bin of a production base from a sand inlet hole 121 to a sand storage box 1 in a volume or mass metering mode according to two specifications of 10 tons and 12 tons, and the transportation requirements of container semi-trailers with the specifications of 15 tons, 28 tons and 35 tons in the market are met. After the sand storage boxes 1 are transported to a fracturing operation site, the sand storage boxes are unloaded and stored for later use by a forklift, and because a gap is reserved between the sand outlet 122 and the lower end port of the square box frame 11, namely the bottom of the square box frame 11 is hollow, the sand storage boxes 1 can be stacked up and down during transportation and site storage, so that the sand storage boxes are more convenient and safer, and for example, two layers of sand storage boxes can be neatly and flatly stacked; then, each sand storage box 1 is transported to each sand inlet 211 of the material conveying mechanism 2 by a forklift.
As shown in fig. 1 and 2, the bottom surface of the generally square box 12 is a first tapered surface 123 with a downward tapered diameter, and the sand outlet 122 is disposed at the bottom end of the first tapered surface 123 to facilitate sand outlet.
In practical application, for the convenience of each sand storage box 1 to place more stably when transporting and storing, for the convenience of sand storage box 1 erects in the top of horizontal transport section simultaneously, as shown in fig. 2 and 3, a proppant feeder for oil gas well fracturing scene still includes the support frame, and material conveying mechanism 2 sets firmly on the support frame, just all is equipped with a plurality of first archs corresponding to each position of advancing sand mouth 211 on the support frame. The top of the square box frame 11 of each sand storage box 1 is provided with a plurality of second protrusions 111, and the bottom of each second protrusion is provided with a plurality of grooves. Each first protrusion can be clamped in a corresponding groove, or each second protrusion 111 on one sand storage box 1 can be clamped in each groove on the other sand storage box 1.
It can be understood that the specifications of the sand storage boxes 1 are the same, the number of the second protrusions 111 at the top of each square box frame 11 is the same as the number of the grooves at the bottom thereof, and in this embodiment, each square box frame 11 is provided with four second protrusions 111 and four grooves, and all the second protrusions 111 and four grooves are arranged at four corners of the square box frame 11; the number of the first protrusions around each sand inlet 211 is the same as the number of the grooves at the bottom of each square box frame 11. Thus, when the sand storage boxes 1 are conveyed by a semitrailer or stored in a fracturing operation site, the sand storage boxes 1 which are stacked mutually are matched and clamped with the corresponding grooves through the second protrusions 111, and meanwhile, when the semitrailer is used for conveying, the semitrailer is also provided with corresponding protrusions to be matched with the grooves of the sand storage boxes 1 to fix the sand storage boxes 1 at the bottommost layer. When the proppant feeding device is used, each sand storage box 1 is placed on the support frame, and each first bulge is matched and clamped with the corresponding groove, so that each sand storage box 1 can be conveniently erected above the corresponding sand inlet 211, and the operation is simple and convenient.
Further, in order to facilitate the installation and conveying of the material conveying mechanism 2, as shown in fig. 5, the material conveying mechanism 2 includes a first closed screw conveyor 21 horizontally disposed and a second closed screw conveyor 22 obliquely disposed, and the first closed screw conveyor 21 constitutes a horizontal conveying section. The discharge end of the first closed screw conveyor 21 is communicated with the bottom feed end of the second closed screw conveyor 22 through the adapter pipe 23, and the sand outlet 221 is arranged at the top discharge end of the second closed screw conveyor 22.
The horizontally arranged first closed screw conveyer 21 is convenient for each sand storage box 1 to unload materials, and the obliquely arranged second closed screw conveyer 22 is convenient for conveying the materials into the feeding buffer bin 3; because the feeding buffer bin 3 is fixedly supported on the ground through a frame body, the height of the feeding buffer bin is higher, the whole material conveying mechanism 2 is composed of two groups of closed screw conveyors, the height of the horizontal conveying section is lower, the installation of the material conveying mechanism 2 is convenient, and the operations of installing and replacing the sand storage box 1 and the like are convenient. Concrete structures of the first closed spiral conveyor 21 and the second closed spiral conveyor 22 are the prior art, the closed spiral conveyor in the embodiment adopts DN400 and 120t/h specification, and the maximum 5m of the fracturing field fracturing pump is met3The sand adding amount of 1.5t/min under the condition that the sand adding ratio required by/min is 30 percent (sand/liquid ratio).
Because the gap of the sand outlet hole 122 of the sand storage box 1 and the butt joint of the sand inlet 211 and the gap of the butt joint of the sand outlet 221 and the feed inlet 31 are smaller, which can be ignored, the whole sand storage box 1 and the feeding buffer bin 3 are basically of closed structures, therefore, the material conveying mechanism 2 adopts a closed screw conveyor, so that the whole proppant feeding device basically forms a full-sealing design, the dust is larger in the sand adding process, the sand adding (namely proppant feeding) operation under various weather conditions is met, and the sand storage box is more economic and environment-friendly.
Further preferably, as shown in fig. 1, a load cell 24 is provided on the bottom lower surface of the first closed screw conveyor 21, the rotation speed of the motor of the first closed screw conveyor 21 is the same as that of the motor of the second closed screw conveyor 22, and a rotation speed sensor 25 is provided on the motor of the first closed screw conveyor 21. The proppant feeding device for the oil and gas well fracturing site further comprises a controller, and the controller is electrically connected with the first switch valve 14, the motor of the first closed screw conveyor 21, the motor of the second closed screw conveyor 22, the weighing sensor 24, the rotating speed sensor 25 and the second switch valve 34.
The motor rotating speeds of the two closed spiral conveyors are the same, so that the feeding amount of the feeding materials entering the first closed spiral conveyor 21 is the same as the discharging amount of the second closed spiral conveyor 22, and the phenomena of material accumulation and the like in the closed spiral conveyors can not be caused. First closed screw conveyer 21 constitutes measurement screw conveyer, can detect out the real-time weight of material in first closed screw conveyer 21 through weighing sensor 24, can detect out the real-time rotational speed of motor among the first closed screw conveyer 21 through speed sensor 25, utilizes this weight and rotational speed to calculate the real-time flow of proppant to the flow size of proppant is conveniently known to the staff.
The controller can control the opening and closing of each switch valve and the action of each motor, can also receive signals detected by each sensor, and can calculate real-time flow according to detected weight signals and rotation speed signals, and the specific control process and the specific structures of the weighing sensor 24 and the rotation speed sensor 25 are the prior art. In addition, when one of the sand storage boxes 1 has the problems of blockage and the like, the controller can also control the first switch valve 14 of the sand storage box 1 to be closed and control the other sand storage box 1 to be opened to continue working, so that the operation is more flexible.
More preferably, in order to more conveniently control the flow rate of the material at the discharge opening 32, as shown in fig. 1 and 6, an electrically driven star-type discharge valve 35 is arranged below the second switch valve 34 at the discharge opening 32, and the electrically driven star-type discharge valve 35 is connected with the controller through a frequency converter.
Through electricity drive star type discharge valve 35 can be so that the material of discharge opening 32 department exports according to certain flow, can make things convenient for the controller to adjust the motor speed in the electricity drive star type discharge valve 35 through setting up of converter, adjust its export flow, reach the purpose of quantitative control proppant feeding volume size to satisfy the sand flow demand that adds of different technologies. The structures of the electrically-driven star-shaped discharge valve 35 and the frequency converter are the prior art and are not described in detail herein. Because the outlet end opening of the electrically-driven star-shaped discharge valve 35 is large, in order to avoid the influence of weather such as strong wind on the output materials, as shown in fig. 1, a discharge conduit 36 is generally connected to the outlet end of the electrically-driven star-shaped discharge valve 35 to guide the material transportation.
Further, in the present embodiment, it is preferable that the volume of the feed buffer bin 3 is the same as the volume of the single sand magazine 1. Therefore, when the device works, the sand storage boxes 1 are opened one by one, after the proppant in one sand storage box 1 is unloaded, and when the material level in the feeding buffer bin 3 is low, the other sand storage box 1 is opened to continue unloading, so that the blockage of the guide screw conveyor and the overflow of the proppant due to the fact that the flow of the sand storage box 1 in the unloading process cannot be controlled are avoided. Because the place of each sand storage box 1 of fracturing operation on-the-spot storage is far away from this proppant feeder use place, and it is longer to carry out the loading and unloading process after accomplishing other sand storage boxes 1 with unloading in one of them sand storage box 1 on the device, consequently, sets up three sand storage boxes 1 on the horizontal transport section in this embodiment, can guarantee work efficiency more effectively.
For easier sand production, as shown in fig. 6, the bottom of the feed buffer bin 3 is provided with a second tapered surface 33 with a diameter decreasing downward, and a second on-off valve 34 is provided at the bottom end of the second tapered surface 33. In the present embodiment, the feeding surge bin 3 is a steel hopper, the diameter and height of the steel hopper are 2200mm and 2000mm respectively, the specific size is determined according to the requirement, and the present embodiment is only distance description.
More preferably, as shown in fig. 1, a position sensor 37 is provided at the top of the feed buffer bin 3, and the position sensor 37 is electrically connected to the controller. This position sensor 37 also is material level sensor, and the concrete structure is prior art, and its probe stretches into in the feed surge bin 3 for the material level of material in the real-time detection feed surge bin 3 when the material level reaches the top in the feed surge bin 3, can be equipped with corresponding siren and sound, uses safelyr.
In summary, the proppant feeding device in this embodiment is composed of a sand storage box 1, a material conveying mechanism 2 convenient for metering and conveying, and a feeding buffer bin 3 convenient for quantitative feeding, wherein proppants such as quartz sand, ceramsite and the like are stored in the sand storage box 1 with a fixed volume, each sand storage box 1 is stored in a fracturing operation site for later use, is transported to the material conveying mechanism 2 by a forklift, enters the feeding buffer bin 3 after being weighed by a metering screw conveyor, and is quantitatively fed to a fracturing fluid preparation facility by an electrically driven star-type discharge valve 35 at the lower part of the feeding buffer bin 3, so that the operation flow is completed. The problems of flow control in the processes of on-site storage, proppant transmission, metering and sand feeding of the fracturing proppant are effectively solved, and the fracturing proppant has the functions of facilitating transportation, storage, metering and quantitative feeding of the fracturing proppant. Has at least the following advantages:
(1) the device is completely different from the technical routes of the links of the packing, transportation and unloading of the existing fracturing propping agent and the feeding and sand adding of the propping agent, is different from the traditional fracturing propping agent which adopts a ton bag packing and bag breaking feeding mode, and redesigns the packing mode of the fracturing propping agent, the bag breaking-free unloading and the metering and feeding process of the propping agent; the operation mode that the conventional fracturing propping agent is high in operation cost and low in efficiency in packaging, transporting and sand adding is integrally solved by packaging and transporting the sand storage box 1 with a fixed volume, metering and unloading the sand by using the material conveying mechanism 2 capable of being quickly mounted and dismounted and adjusting the flow by using the feeding buffer bin 3; the efficiency of the fracturing propping agent in the links of packaging, transportation, storage and feeding is greatly improved, and the operation cost is reduced.
(2) The sand storage box 1 is formed by welding a steel structure and a steel plate, and compared with the traditional ton bag, the sand storage box is low in operation cost, free of repeated waste and improved in industry technical level.
(3) The material conveying mechanism 2 for realizing metering transmission and the feeding buffer bin 3 for realizing quantitative sand adding have simple structure and process, reliability and low cost, do not need large-scale hoisting equipment operation, can complete all operation operations by only two persons, and greatly increase the operation efficiency; the proppant is transmitted to feed surge bin 3 by material conveying mechanism 2, prevents to lead to the proppant to pile up and spill over because of the feed of sand storage box 1 is too fast, causes each screw conveyer to block up and raise dust loss.
(4) The whole device adopts a modularized and full-sealed design, is convenient to transport, install and maintain, meets the requirement of sand adding operation under various weather conditions, is economic and environment-friendly, and has the advantages of small occupied space, high continuous operation efficiency, continuous weighing and metering and the like; and the sand storage box 1, the material conveying mechanism 2 and the feeding buffer bin 3 can be respectively and independently used or used for other material packaging, transportation, unloading, metering transmission and quantitative feeding operation, the operation efficiency of each link can be greatly improved, the economy is good, the operation cost is reduced, and the application range is wider.
(5) The whole device combines the on-site sand adding process of fracturing operation, simplifies the operations of fracturing propping agent transportation, storage and feeding, realizes the functions of continuity, metering and quantitative feeding in the propping agent feeding process, adopts the design of modules and skid mounting, adapts to the requirements of quick installation and disassembly of fracturing operation equipment, and greatly improves the efficiency of propping agent transportation and feeding.
The above are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should fall within the protection scope of the invention.
Claims (10)
1. A proppant feeding apparatus for use in a fracturing site of an oil and gas well, comprising:
the material conveying mechanism is at least provided with a horizontal conveying section and a sand outlet, and a plurality of sand inlets are arranged on the upper surface of the horizontal conveying section at intervals;
the sand storage box comprises a plurality of sand storage boxes, a sand inlet hole is formed in the top surface of each sand storage box, and a rotary cover plate capable of plugging the sand inlet hole is rotatably connected to the top of each sand storage box; a sand outlet is formed in the bottom of each sand storage box, and a first switch valve is arranged at the sand outlet; each sand storage box is erected above the horizontal conveying section, and each sand outlet is arranged opposite to the corresponding sand inlet up and down;
and the top and the bottom of the feeding buffer bin are respectively provided with a feeding port and a discharging port, the sand outlet is communicated with the feeding port, and the discharging port is provided with a second switch valve.
2. The proppant feeding apparatus for use in a fracturing site of an oil or gas well of claim 1,
each sand storage box comprises a square box frame with the upper end and the lower end open and a square box body fixedly arranged in the square box frame, the sand inlet hole and the rotary cover plate are arranged on the top surface of the square box body, and the sand outlet hole is arranged on the bottom surface of the square box body and a gap is reserved between the sand outlet hole and the lower end port of the square box frame.
3. The proppant feeding apparatus for use in a fracturing site of an oil or gas well of claim 2,
the bottom surface of the square box body is a first conical surface with the diameter gradually reduced downwards, and the sand outlet is formed in the bottom end of the first conical surface.
4. The proppant feeding apparatus for an oil and gas well fracturing site of claim 2, further comprising a support stand;
the material conveying mechanism is fixedly arranged on the support frame, and a plurality of first bulges are arranged on the support frame and correspond to the positions of the sand inlets; the top of the square box frame of each sand storage box is provided with a plurality of second bulges, and the bottom of each sand storage box is provided with a plurality of grooves; each first bulge can be clamped in the corresponding groove, or each second bulge on one sand storage box can be clamped in each groove on the other sand storage box.
5. The proppant feeding apparatus for use in a fracturing site of an oil or gas well of claim 1,
the material conveying mechanism comprises a first closed spiral conveyor and a second closed spiral conveyor, wherein the first closed spiral conveyor is horizontally arranged, the second closed spiral conveyor is obliquely arranged, and the first closed spiral conveyor forms the horizontal conveying section; the discharge end of the first closed type spiral conveyor is communicated with the bottom feed end of the second closed type spiral conveyor through a switching pipe, and the sand outlet is formed in the top discharge end of the second closed type spiral conveyor.
6. The proppant feeding apparatus for use in a fracturing site of an oil or gas well of claim 5,
a weighing sensor is arranged on the lower surface of the bottom of the first closed spiral conveyor, the rotating speed of a motor of the first closed spiral conveyor is the same as that of a motor of the second closed spiral conveyor, and a rotating speed sensor is arranged on the motor of the first closed spiral conveyor;
the proppant feeding device for the oil-gas well fracturing site further comprises a controller, wherein the controller is electrically connected with the first switch valve, the motor of the first closed spiral conveyer, the motor of the second closed spiral conveyer, the weighing sensor, the rotating speed sensor and the second switch valve.
7. The proppant feeding apparatus for use in a fracturing site of an oil or gas well of claim 6,
the discharge opening is located the below of second ooff valve is equipped with electricity and drives star type discharge valve, electricity drive star type discharge valve pass through the converter with the controller is connected.
8. The proppant feeding apparatus for use in a fracturing site of an oil or gas well of claim 7,
the outlet end of the electrically-driven star-shaped discharge valve is connected with a discharge conduit.
9. The proppant feeding apparatus for use in a fracturing site of an oil or gas well of claim 1,
the volume of the feeding buffer bin is the same as that of a single sand storage box; the bottom of the feeding buffer bin is a second conical surface with the diameter gradually reduced downwards, and the second switch valve is arranged at the bottom end of the second conical surface.
10. The proppant feeding apparatus for use in a fracturing site of an oil or gas well of claim 6,
and a position sensor is arranged at the top of the feeding buffer bin and is electrically connected with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110175588.4A CN112938359A (en) | 2021-02-09 | 2021-02-09 | Proppant feeding device for oil and gas well fracturing site |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110175588.4A CN112938359A (en) | 2021-02-09 | 2021-02-09 | Proppant feeding device for oil and gas well fracturing site |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112938359A true CN112938359A (en) | 2021-06-11 |
Family
ID=76244476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110175588.4A Withdrawn CN112938359A (en) | 2021-02-09 | 2021-02-09 | Proppant feeding device for oil and gas well fracturing site |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112938359A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2062835A1 (en) * | 1970-12-21 | 1972-06-29 | Amazonen-Werke H. Dreyer, 4501 Gaste | Machine for spreading granular or powdery material |
| CN101780886A (en) * | 2009-12-31 | 2010-07-21 | 邓惠文 | Turntable type quantitative discharging device |
| CN205438900U (en) * | 2015-12-28 | 2016-08-10 | 广西盛鸭混凝土有限公司 | Modified concrete production system |
| CN206457016U (en) * | 2017-01-24 | 2017-09-01 | 中卫海弘养殖有限公司 | Convey feed coaxial two-direction blanking device |
| CN210286026U (en) * | 2019-04-30 | 2020-04-10 | 巩义市丰泽耐火材料有限公司 | Refractory material raw materials for production feed arrangement |
-
2021
- 2021-02-09 CN CN202110175588.4A patent/CN112938359A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2062835A1 (en) * | 1970-12-21 | 1972-06-29 | Amazonen-Werke H. Dreyer, 4501 Gaste | Machine for spreading granular or powdery material |
| CN101780886A (en) * | 2009-12-31 | 2010-07-21 | 邓惠文 | Turntable type quantitative discharging device |
| CN205438900U (en) * | 2015-12-28 | 2016-08-10 | 广西盛鸭混凝土有限公司 | Modified concrete production system |
| CN206457016U (en) * | 2017-01-24 | 2017-09-01 | 中卫海弘养殖有限公司 | Convey feed coaxial two-direction blanking device |
| CN210286026U (en) * | 2019-04-30 | 2020-04-10 | 巩义市丰泽耐火材料有限公司 | Refractory material raw materials for production feed arrangement |
Non-Patent Citations (2)
| Title |
|---|
| 张瑞平，等: "《聚酯生产设备》", 31 May 1991, 东南大学出版社 * |
| 钟名湖: "《电子产品结构工艺》", 31 July 2002, 高等教育出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204024625U (en) | A kind of equipment of carrying proppant | |
| CN104074500A (en) | Equipment for conveying propping agents | |
| CN110654895A (en) | Automatic electric-driven spiral sand conveying and storing device | |
| WO2021012831A1 (en) | Automatic sand conveying system | |
| CN112389950A (en) | Combined type sand supply system and method for oilfield fracturing operation | |
| US20130149081A1 (en) | Method and apparatus for efficiently filling and unloading flat and hopper bottom grain bins from the bottom using one conveyor | |
| CN113501184A (en) | Large-discharge full-electric fracturing continuous sand supply device and method | |
| CN112938359A (en) | Proppant feeding device for oil and gas well fracturing site | |
| CN2512750Y (en) | Bulk Material screw ship unloader for port and dock | |
| CN110359953B (en) | Coal mine underground empty roadway filling system device | |
| CN213922710U (en) | Combined sand supply system for oilfield fracturing operation | |
| CN211389425U (en) | Integrated integrated automatic slurry preparing device for horizontal bulk cement tank | |
| CN208071236U (en) | Comminuting matter elevator | |
| CN212981781U (en) | Hoisting type spiral bin allocation and clearing device and flat bottom type cylindrical bin | |
| CN211812384U (en) | Symmetrical mixing station storage bin | |
| CN214217247U (en) | Novel syllogic conveyer | |
| CN201201813Y (en) | Staggered trailer coal and carbon compatible funnel of shiploader | |
| US20220106183A1 (en) | Inlet for transferring proppant | |
| CN108357882A (en) | A kind of PTA powders carrier bar transport system | |
| CN209455673U (en) | Mine multicomponent solid particle material pipe-line transportation system | |
| CN209442141U (en) | A kind of coal mine digging conveying equipment | |
| CN210213659U (en) | Bulk cargo storage bin with built-in bin cleaning equipment | |
| CN221140349U (en) | Inclined sand scattering conveying device | |
| CN202657266U (en) | Movable ton bag packing machine | |
| CN219822688U (en) | Automatic sand conveying system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210611 |