CN212202028U - Oil well foam fracturing device with concentrated sand ratio - Google Patents

Abstract

The utility model provides an oil well foam fracturing device of concentrated sand ratio, the power distribution box comprises a box body, the left side of box is seted up into sand mouth, advance the first sand pipe that advances of sand mouth internal fixation, first sand pipe slope down, the sand pipe is advanced to the right-hand member fixed mounting second of first sand pipe, the second advances the sand pipe vertically downwards, the left upside of sand pipe and the lower extreme intercommunication of first sand pipe are advanced to the second, the middle part of long tube periphery is connected to the upside bearing of sand pipe inner wall is advanced to the second, the top surface of the lower extreme fixed connection jar body of sand pipe is advanced to the second, the sand pipe is advanced to the second and jar body intercommunication. This device passes through the slot pipe, has reduced the proportion of foamer aqueous solution in the mixed liquid, has improved the sand-carrying ratio in the mixed liquid to through discharging mixed liquid upper portion, having avoided mixed liquid to subside at the in-process sand grain of downing in the current device and lead to the sand grain to block up in jar body bottom, and then plug up the phenomenon of drain pipe.

Description

Oil well foam fracturing device with concentrated sand ratio

Technical Field

The utility model belongs to fracturing unit field, specifically speaking are oil well foam fracturing unit of concentrated sand ratio.

Background

In the process of crude oil exploitation, the recovery ratio needs to be increased through a fracturing method, in field construction, clear water is mostly adopted for sand-carrying fracturing, liquid nitrogen or nitrogen foam is supplemented, liquid drainage after fracturing is promoted, the viscosity of the clear water is low, the sand-carrying capacity is poor, the sand-carrying ratio cannot be improved in the sand mixing process, otherwise, fractured sand is easy to settle in a stirring tank of a sand mixing tank, a liquid outlet pipe is blocked, petroleum exploitation is not facilitated, and therefore the oil well foam fracturing device with the concentrated sand ratio is designed.

SUMMERY OF THE UTILITY MODEL

The utility model provides an oil well foam fracturing device of concentrated sand ratio for solve the defect among the prior art.

The utility model discloses a following technical scheme realizes:

an oil well foam fracturing device with a concentrated sand ratio comprises a box body, wherein a sand inlet is formed in the left side of the box body, a first sand inlet pipe is fixedly installed in the sand inlet, the first sand inlet pipe inclines downwards, a second sand inlet pipe is fixedly installed at the right end of the first sand inlet pipe, the second sand inlet pipe is vertically downwards, the upper side of the left side of the second sand inlet pipe is communicated with the lower end of the first sand inlet pipe, an upper side bearing on the inner wall of the second sand inlet pipe is connected with the middle part of the periphery of a long pipe, the lower end of the second sand inlet pipe is fixedly connected with the top surface of a tank body, the second sand inlet pipe is communicated with the tank body, the lower side of the long pipe is positioned in the tank body, a plurality of stirring rods are fixedly installed at the lower end of the periphery of the long pipe, a preliminary mixing device connected with the periphery of the long pipe is arranged above the stirring rods, the liquid inlet pipe sequentially penetrates through the box body and the tank body to be communicated with the preliminary mixing device, a first gear is fixedly arranged at the lower end of a rotating shaft of a first motor, a coaxial second gear is fixedly arranged at the upper side of the periphery of the long pipe, the first gear is meshed with the second gear, a top end bearing of the long pipe is connected with a coaxial slotted pipe, the diameter of the slotted pipe is the same as that of the long pipe, a diversion box is fixedly arranged at the middle part of the top surface of the inner wall of the box body, the rear side of the diversion box is communicated with the outer side of the box body, the upper end of the slotted pipe sequentially penetrates through the bottom surface of the diversion box and the top surface of the box body and is positioned above the box body, the upper end of the slotted pipe is fixedly connected with a liquid outlet pipe, the bottom side of the periphery of the slotted pipe is fixedly connected with the bottom surface of the diversion box body, a second motor is fixedly arranged at the bottom surface of the box body, the upper end of the rotating shaft of the second motor sequentially penetrates through the bottom surface of, the periphery of the helical blade is in sliding contact fit with the inner wall of the long pipe.

According to the oil well foam fracturing device with the concentrated sand ratio, the bearing connection is connected through a sealed bearing.

According to the oil well foam fracturing device with the concentrated sand ratio, the middle part of the periphery of the long pipe is fixedly provided with the stirring blades, and the stirring blades are in sliding contact fit with the inner wall of the second sand inlet pipe.

As above oil well foam fracturing unit of concentrated sand ratio, preliminary mixing arrangement include that the bottom surface bearing installs the nozzle stub in the long tube periphery, the inner wall of nozzle stub and the periphery clearance fit of long tube, the top side opening of nozzle stub, the feed liquor pipe passes box and jar body and the inside intercommunication of nozzle stub in proper order, the top of nozzle stub is equipped with the annular deflector of fixed mounting in the long tube periphery, the deflector is the top form, constitutes by two upper and lower cone fixed connection together promptly.

According to the oil well foam fracturing device for the concentrated sand ratio, the liquid inlet pipe is a hard pipe.

According to the oil well foam fracturing device for the concentrated sand ratio, the stirring rods are distributed on the periphery of the long pipe in a staggered mode.

The utility model has the advantages that: the utility model discloses can accomplish to mix the liquid and concentrate, increase the sand ratio of taking in mixing the liquid to avoid sand grain gathering deposit in drain pipe department, block up the drain pipe. When the utility model is used, the first motor is started, the first motor rotates to drive the first gear to rotate, and then the long pipe is driven to rotate through the second gear, the second motor is started, the rotating speed of the second motor is the same as the rotating speed of the long pipe, the rotating direction of the second motor is the same as the rotating direction of the long pipe, the foaming agent aqueous solution is pumped into the tank body through the liquid inlet pipe, sand grains pass through the sand inlet under the action of gravity, the first sand inlet pipe and the second sand inlet pipe fall into the tank body, the foaming agent aqueous solution and the sand grains are preliminarily mixed through the preliminary mixing device, the stirring rod is driven to rotate by the rotation of the long pipe, the foaming agent aqueous solution and the sand grains are further stirred to obtain evenly mixed liquid, then the second motor is reversely rotated, the rotating direction of the rotating shaft is opposite to that of the long pipe, the mixed liquid is upwards lifted under the action of the rotating shaft, partial foaming agent aqueous solution in the partial mixed liquid flows out through the slotted pipe, get into the diversion box and discharge through the diversion box through the rear side, all the other mixed liquids can pour into well head oil pipe or sleeve pipe into after flowing out through the drain pipe and mixing with foam base fluid and use, in-process that mixed liquid promoted, first motor continuously rotates, the puddler continuously stirs mixed liquid, can avoid sand grain to subside after static, this device passes through the slotted pipe, the proportion of foaming agent aqueous solution in the mixed liquid has been reduced, the sand carrying ratio in the mixed liquid has been improved, and through discharging mixed liquid upper portion, mixed liquid subsides at the in-process that flows down in having avoided current device and leads to the sand grain to block up in jar body bottom, and then the phenomenon of plugging up the drain pipe.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

An oil well foam fracturing device with a concentrated sand ratio comprises a box body 1, wherein a sand inlet 2 is formed in the left side of the box body 1, a first sand inlet pipe 3 is fixedly installed in the sand inlet 2, the first sand inlet pipe 3 inclines downwards, a second sand inlet pipe 4 is fixedly installed at the right end of the first sand inlet pipe 3, the second sand inlet pipe 4 is vertically downwards, the upper side of the left side of the second sand inlet pipe 4 is communicated with the lower end of the first sand inlet pipe 3, an upper side bearing on the inner wall of the second sand inlet pipe 4 is connected with the middle part of the periphery of a long pipe 5, the lower end of the second sand inlet pipe 4 is fixedly connected with the top surface of a tank body 6, the second sand inlet pipe 4 is communicated with the tank body 6, the lower side of the long pipe 5 is positioned in the tank body 6, a plurality of stirring rods 7 are fixedly installed at the lower end of the periphery of the long pipe 5, a primary mixing device 8 connected with the periphery of the long pipe 5 is arranged above the stirring rods 7, and a, the periphery of the liquid inlet pipe 9 is fixedly connected with the right side of the box body 1 and the right side of the tank body 6, the right side of the top surface of the inner wall of the box body 1 is fixedly provided with a first motor 10, the lower end of the rotating shaft of the first motor 10 is fixedly provided with a first gear 11, the upper side of the periphery of the long pipe 5 is fixedly provided with a coaxial second gear 12, the first gear 11 is meshed with the second gear 12 in a matching way, the top end of the long pipe 5 is connected with a coaxial slotted pipe 13 through a bearing, the diameter of the slotted pipe 13 is the same as that of the long pipe 5, the middle part of the top surface of the inner wall of the box body 1 is fixedly provided with a diversion box 14, the rear side of the diversion box 14 is communicated with the outer side of the box body 1, the upper end of the slotted pipe 13 sequentially penetrates through the bottom surface of the diversion box 14 and the top surface of the box body 1 and is positioned above the box body 1, the upper end of, the upper end of the rotating shaft of the second motor 15 sequentially penetrates through the bottom surface of the box body 1 and the bottom surface of the tank body 6 and is fixedly connected with the bottom end of a coaxial rotating shaft 16, the rotating shaft of the second motor 15 is connected with the bottom surface of the tank body 6 through a bearing, a helical blade 17 is fixedly installed on the periphery of the rotating shaft 16, and the periphery of the helical blade 17 is in sliding contact fit with the inner wall of the long pipe 5. The utility model discloses can accomplish to mix the liquid and concentrate, increase the sand ratio of taking in mixing the liquid to avoid sand grain gathering deposit in drain pipe department, block up the drain pipe. When the utility model is used, the first motor 10 is started, the first motor 10 rotates to drive the first gear 11 to rotate, and then the long pipe 5 is driven to rotate through the second gear 12, the second motor 15 is started, the rotating speed of the second motor 15 is the same as that of the long pipe 5, so that the rotating direction of the second motor 15 is the same as that of the long pipe 5, the foaming agent aqueous solution is pumped into the tank body 6 through the liquid inlet pipe 9, sand grains fall into the tank body 6 through the sand inlet 2, the first sand inlet pipe 3 and the second sand inlet pipe 4 under the action of gravity, the foaming agent aqueous solution and the sand grains are preliminarily mixed through the preliminary mixing device 8, the long pipe 5 rotates to drive the stirring rod 7 to rotate, the foaming agent aqueous solution and the sand grains are further stirred to obtain evenly mixed liquid, then the second motor 15 reversely rotates, the rotating direction of the rotating shaft 16 is opposite to that of the long pipe 5, the mixed liquid is lifted upwards under the action of the rotating shaft 16, when the mixed liquid flows through the slit pipe 13, part of the foaming agent aqueous solution in part of the mixed liquid flows out through the slit pipe 9, enters the flow guiding box 14 and is discharged from the rear side through the flow guiding box 14, the rest of the mixed liquid flows out through the liquid outlet pipe 19 and is mixed with the foam base liquid to be injected into a wellhead oil pipe or a casing for use, in the lifting process of the mixed liquid, the first motor 10 continuously rotates, the stirring rod 7 continuously stirs the mixed liquid, the sedimentation of sand grains after standing can be avoided, the proportion of the foaming agent aqueous solution in the mixed liquid is reduced through the slit pipe 13, the sand carrying ratio in the mixed liquid is improved, and the phenomenon that the sand grains are blocked at the bottom of the tank body and further block the liquid outlet pipe due to the sedimentation of the sand grains in the downward flowing process of the mixed liquid in the existing device is avoided through discharging the upper part of.

Specifically, as shown in the drawings, the bearing connections described in the present embodiment are all connected by a sealed bearing. By sealing the bearing, the liquid can be prevented from flowing out through the gap of the bearing.

Specifically, as shown in the figure, a plurality of stirring blades 18 are fixedly installed in the middle of the outer periphery of the long pipe 5, and the stirring blades 18 are in sliding contact with and matched with the inner wall of the second sand inlet pipe 4. Through stirring vane, can avoid the sand grain to pile up and cause the jam between first sand inlet pipe 3 and second sand inlet pipe 4, can make the even whereabouts of sand grain simultaneously.

Further, as shown in the figure, the preliminary mixing device 8 described in this embodiment includes that the bottom surface bearing is installed at the short pipe 81 in the periphery of the long pipe 5, the inner wall of the short pipe 81 is in clearance fit with the periphery of the long pipe 5, the top side of the short pipe 81 is open, the liquid inlet pipe 9 sequentially passes through the box body 1 and the tank body 6 and is communicated with the inside of the short pipe 81, the annular guide plate 82 fixedly installed at the periphery of the long pipe 5 is arranged above the short pipe 81, and the guide plate 82 is in a gyro shape, namely, is formed by fixedly connecting an upper cone and. The sand grains fall downwards to the top surface of the guide plate 82 through the second sand inlet pipe 4 and fall along the top surface in an evenly distributed manner, the foaming agent water solution enters the short pipe 81 through the liquid inlet pipe 9 and flows out upwards, and is evenly flushed upwards obliquely along the bottom surface of the guide plate 82 under the guidance of the bottom surface of the guide plate 82, and is primarily mixed with the falling sand grains at the periphery of the guide plate 82.

Furthermore, as shown in the figure, the liquid inlet pipe 9 of the present embodiment is a hard pipe. The short pipe 81 can be fixed by the hard pipe, and the rotation of the short pipe 81 is avoided.

Furthermore, as shown in the figure, the stirring rods 7 of the present embodiment are distributed in a staggered manner on the outer circumference of the long tube 5. The stirring rod 7 can enhance the stirring effect in the staggered distribution of the periphery of the long pipe 5, so that the stirring is more uniform.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (6)

1. The utility model provides an oil well foam fracturing device of concentrated sand ratio which characterized in that: comprises a box body (1), a sand inlet (2) is arranged on the left side of the box body (1), a first sand inlet pipe (3) is fixedly arranged in the sand inlet (2), the first sand inlet pipe (3) inclines downwards, a second sand inlet pipe (4) is fixedly arranged at the right end of the first sand inlet pipe (3), the second sand inlet pipe (4) is vertically downwards, the left upside of the second sand inlet pipe (4) is communicated with the lower end of the first sand inlet pipe (3), the upside bearing of the inner wall of the second sand inlet pipe (4) is connected with the middle part of the periphery of a long pipe (5), the lower end of the second sand inlet pipe (4) is fixedly connected with the top surface of a tank body (6), the second sand inlet pipe (4) is communicated with the tank body (6), the lower side of the long pipe (5) is positioned in the tank body (6), a plurality of stirring rods (7) are fixedly arranged at the lower end of the periphery of the long pipe (5), a preliminary mixing device (8) connected with the periphery of the long pipe (5) is, the liquid inlet pipe (9) sequentially penetrates through the box body (1) and the tank body (6) to be communicated with the primary mixing device (8), the periphery of the liquid inlet pipe (9) is fixedly connected with the right side of the box body (1) and the right side of the tank body (6), a first motor (10) is fixedly installed on the right side of the top surface of the inner wall of the box body (1), a first gear (11) is fixedly installed at the lower end of a rotating shaft of the first motor (10), a coaxial second gear (12) is fixedly installed on the upper side of the periphery of the long pipe (5), the first gear (11) is meshed and matched with the second gear (12), a top end bearing of the long pipe (5) is connected with a coaxial slotted pipe (13), the slotted pipe (13) and the long pipe (5) have the same diameter, a flow guide box (14) is fixedly installed in the middle of the top surface of the inner wall of the box body (1), the rear side of the flow guide box (14) is communicated with the outer side of the box body (1), the upper end of the slotted pipe (13, the upper end fixed connection drain pipe (19) of slot pipe (13), the bottom side of slot pipe (13) periphery and the bottom surface fixed connection of water conservancy diversion box (14), the bottom surface fixed mounting second motor (15) of box (1), the upper end of second motor (15) pivot passes the bottom surface of box (1) and the bottom surface of the jar body (6) in proper order and the coaxial bottom of rotation axis (16) of fixed connection, the pivot of second motor (15) is connected with the bottom surface bearing of the jar body (6), the periphery fixed mounting helical blade (17) of rotation axis (16), the periphery of helical blade (17) and the inner wall sliding contact cooperation of long tube (5).

2. The apparatus of claim 1 for foam fracturing a well with a concentrated sand ratio, wherein: the bearing connection is sealed bearing connection.

3. The apparatus of claim 1 for foam fracturing a well with a concentrated sand ratio, wherein: the middle part of the periphery of the long pipe (5) is fixedly provided with a plurality of stirring blades (18), and the stirring blades (18) are in sliding contact fit with the inner wall of the second sand inlet pipe (4).

4. The apparatus of claim 1 for foam fracturing a well with a concentrated sand ratio, wherein: preliminary mixing arrangement (8) include that the bottom surface bearing installs nozzle stub (81) in long tube (5) periphery, the inner wall of nozzle stub (81) and the periphery clearance fit of long tube (5), the top side opening of nozzle stub (81), box (1) and jar body (6) and nozzle stub (81) inside intercommunication are passed in proper order in feed liquor pipe (9), the top of nozzle stub (81) is equipped with annular deflector (82) of fixed mounting in long tube (5) periphery, deflector (82) are the top form, constitute together by two upper and lower cone fixed connection promptly.

5. The apparatus of claim 4 for foam fracturing a well with a concentrated sand ratio, wherein: the liquid inlet pipe (9) is a hard pipe.

6. The apparatus of claim 1 for foam fracturing a well with a concentrated sand ratio, wherein: the stirring rods (7) are distributed on the periphery of the long pipe (5) in a staggered mode.

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