CN210679132U - Device for spraying, sucking and blending cement paste - Google Patents
Device for spraying, sucking and blending cement paste Download PDFInfo
- Publication number
- CN210679132U CN210679132U CN201921218132.6U CN201921218132U CN210679132U CN 210679132 U CN210679132 U CN 210679132U CN 201921218132 U CN201921218132 U CN 201921218132U CN 210679132 U CN210679132 U CN 210679132U
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- funnel
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- suction device
- threaded rod
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Abstract
The utility model discloses a device for pumping and mixing cement slurry by jet flow, which comprises an injection funnel, a funnel switch stirrer, an auger conveyor, a dust loading funnel, a jet flow suction device, a cement slurry tank and a bent pipe; the injection funnel comprises a funnel body, a support and an internal thread cylinder, the funnel body is a quadrangular frustum pyramid shaped funnel, the bottom of the funnel body is connected with a jet aspirator through a flange, supporting rods are symmetrically welded at two ends of the internal thread cylinder, and the supporting rods are welded in the funnel body. The funnel switch agitator includes hand wheel, threaded rod, polished rod, puddler and switch stopper, and the hand wheel is installed on the top of threaded rod, and the polished rod welding is at the lower extreme of threaded rod, and the switch stopper welding is at the lower extreme of polished rod. The jet flow suction device comprises a suction device body and a throttling nozzle, wherein the suction device body is fixed on the top of the cement slurry tank through two circular clamps and is connected with the bent pipe through a flange. Reasonable and compact structure, safe and reliable use, uniform and high-efficiency ash distribution.
Description
Technical Field
The utility model belongs to the technical field of oil gas well borehole operation technique and specifically relates to a device of efflux suction allotment grout.
Background
In the well completion construction of oil and gas wells, after a layer is jetted by using a perforation technology to obtain qualified oil testing information, if the layer does not produce or does not have industrial oil flow, a cement plug is needed to seal the layer, and the layer returns to a second layer for oil testing. The construction time of the cement injection plug needs to be controlled, and if the construction time exceeds the initial setting time of cement paste, the cement paste is not injected into the well, so that the fluidity is lost, and the construction failure is caused.
At present, cement paste is required to be prepared on the ground in site cement plug injection construction. The cement ash is poured into 1m by manpower3～1.5m3The pump truck supplies water to the stabbing gun to impact cement ash, and constructors stir and mix cement paste by using the spade. The method for preparing the cement paste has the following defects: (1) the ash preparation time is long. The cement is prepared by the existing preparation method and by using G-grade cement1m3Density 1.85g/cm3The time of cement slurry is about 40 minutes, and potential risks are brought to cement slurry injection construction. (2) The blending is not uniform. The cement is directly poured into water manually, and a part of the cement is agglomerated into blocks when meeting water and sinks to the bottom of the tank. The pressure of the lance is lower, the lance cannot be opened, when the pressure of the lance is higher, the personnel cannot hold the lance, and the spade is inserted into the tank bottom and cannot be completely and uniformly stirred. (3) The resource waste is serious. Because the cement blocks and the sediment can not be uniformly stirred, the waste is caused, and more cement than the theoretical value needs to be added in order to prepare the cement paste with qualified density. Moreover, as constructors seek to pour the cement quickly, the cement in the bag cannot be poured completely, and a lot of cement is scattered outside the tank. (4) The construction strength is high, and the number of participators is large. In the process of preparing cement paste, in order to increase the speed, construction personnel are required to quickly transport bagged cement to a tank and then pour the bagged cement into the tank, a shovel is required to be used for continuously stirring the cement paste in the tank, and a bayonet gun is required to be held by two persons at the same time. Just because the cement blocks and settles the bottom, the cement garbage at the bottom of the tank is more, and the later tank cleaning is time-consuming and labor-consuming. Therefore, the whole slurry preparation process has more participators, the physical consumption of constructors is large, and the slurry preparation efficiency is low. (5) The security risk is large. The slurry preparation process requires the field construction of personnel, and the throwing of a stabbing gun or the breakage of a rubber tube can cause injury accidents. In addition, dry cement dust easily enters the body of a constructor, and causes dust damage.
Therefore, the existing cement paste mixing method has the problems of time and labor waste, high construction strength, high safety risk and the like in the construction process, so that a device for mixing cement paste, which has a reasonable and compact structure, is safe and reliable to use, and is uniform and efficient in cement mixing, is urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a device of reasonable in structure compactness, use safe and reliable, the even efficient efflux suction allotment grout of joining in marriage ash that provides.
In order to solve the technical problem, the utility model discloses a technical scheme is: a device for pumping and mixing cement slurry by jet flow comprises an injection funnel, a funnel switch stirrer, an auger conveyor, a dust loading funnel, a jet flow suction device, a cement slurry tank and a bent pipe, wherein the injection funnel comprises a funnel body, a support rod and an internal thread cylinder, the bottom of a feed opening of the funnel body is connected with the jet flow suction device through a flange, the outer walls of two sides of the internal thread cylinder which is vertically arranged are symmetrically welded with the support rod respectively, the free ends of the two support rods are welded to the inner wall of the top of the funnel body, and the central axis of the internal thread cylinder is coincided with the central axis of the feed opening at; the funnel switch stirrer comprises a hand wheel, a threaded rod, a polished rod, stirring rods and a switch plug, wherein the hand wheel is installed at the top end of the threaded rod, the polished rod with the outer diameter smaller than that of the threaded rod is welded at the lower end of the threaded rod, a plurality of stirring rods are welded on the polished rod, the bottom of the polished rod is welded with the switch plug matched with the feed opening of the funnel body, the threaded rod is screwed in the internal thread barrel, and the hand wheel drives the threaded rod to control the opening and closing of the switch plug and the rotation; the jet flow suction device comprises a suction device body and a throttling nozzle, the suction device body is fixed on the top of the cement slurry tank, the outlet of the suction device body is connected with a bent pipe which extends downwards into the cement slurry tank, and the non-threaded end plane of the throttling nozzle is provided with two mounting grooves which are mounted in the suction device body through threads; the auger conveyor and the ash loading hopper convey cement ash into the hopper body.
The external thread on the threaded rod is matched with the internal thread of the internal thread cylinder, and the thread lengths of the external thread and the internal thread cylinder are equal.
The stirring rod is three cylinders and is spirally welded on the polish rod from top to bottom at an interval of 120 degrees.
The throttling nozzle can replace different inner diameters to adjust the speed of cement ash injection.
The bent pipe extends downwards into the cement slurry tank at an angle of 45 degrees with the horizontal plane.
The aspirator body is fixed on the top of the cement paste tank through two circular clamps.
The utility model has the advantages that: cement ash is sucked into the suction device body in the funnel body through the jet flow suction device, the cement ash and water are fully mixed, cement slurry with qualified density can be rapidly mixed, the cement slurry mixing time is shortened, water and ash are uniformly mixed, the tank bottom is basically free of cement precipitation, the cement consumption can be saved, the cement ash is poured into the ash loading funnel, after a cement truck is started, the field cement ash mixing process is automatically carried out, the construction labor intensity and the safety risk are reduced, the problems of time and labor waste, high construction intensity, high safety risk and the like in the cement slurry mixing construction process can be thoroughly solved, and therefore engineering operation safety and high efficiency are promoted.
Drawings
FIG. 1 is a side view of the device for pumping and mixing cement slurry with jet flow of the present invention;
FIG. 2 is a full sectional view of the device for pumping and mixing cement slurry with jet flow of the present invention;
FIG. 3 is a side view of the middle funnel switch agitator of the present invention;
fig. 4 is a side view of an injection funnel of the present invention;
FIG. 5 is a full sectional view of the jet aspirator of the present invention;
FIG. 6 is a perspective view of the throttling nozzle of the present invention;
fig. 7 is the utility model discloses well site operation sketch map.
In the figure: 1. a hopper switch agitator; 1-1, a hand wheel; 1-2, a threaded rod; 1-3, a polish rod; 1-4, a stirring rod; 1-5, a switch plug; 2. a screw conveyor; 3. a circular card; 4. a jet aspirator; 4-1, a throttling nozzle; 4-1-1, mounting groove; 4-2, an aspirator body; 5. a cement slurry tank; 6. bending the pipe; 7. an injection funnel; 7-1, an internal thread cylinder; 7-2, a bracket; 7-3, a funnel body; 8. loading an ash hopper; 9. valve number 1; 10. a valve number 2; 11. a valve number 3; 12. a valve number 4; 13. a wellhead assembly; 14. a clean water tank; 15. a slurry pump; 16. an outlet of the pump; 17. a pump inlet.
Detailed Description
The invention will be described in further detail with reference to the following drawings and detailed description:
as shown in fig. 1-6, the device for pumping and mixing cement slurry by jet flow of the present invention comprises an injection funnel 7, a funnel switch stirrer 1, an auger conveyor 2, an ash loading funnel 8, a jet flow suction device 4, a cement slurry tank 5 and a bent pipe 6, wherein the injection funnel 7 comprises a funnel body 7-3, a support rod 7-2 and an internal thread cylinder 7-1, the bottom of a feed opening of the funnel body 7-3 is connected with the jet flow suction device 4 by a flange, the outer walls of two sides of the vertically arranged internal thread cylinder 7-1 are respectively welded with the support rod 7-2 symmetrically, the free ends of the two support rods 7-2 are welded to the inner wall of the top of the funnel body, so that the central axis of the internal thread cylinder 7-1 coincides with the central axis of the feed opening at the; the funnel switch stirrer 1 comprises a hand wheel 1-1, a threaded rod 1-2, a polished rod 1-3, a stirring rod 1-4 and a switch plug 1-5, wherein the hand wheel 1-1 is installed at the top end of the threaded rod 1-2, the polished rod 1-3 with the outer diameter smaller than that of the threaded rod 1-2 is welded at the lower end of the threaded rod 1-2, a plurality of stirring rods 1-4 are welded on the polished rod 1-3, the bottom of the polished rod is welded with the switch plug 1-5 matched with a hopper body blanking opening, the threaded rod 1-2 is screwed in an internal thread cylinder 7-1, and the hand wheel drives the threaded rod to control the opening and closing of the switch plug 1-5 and the rotation and stirring of the stirring rod 1-; the jet flow suction device 4 comprises a suction device body 4-2 and a throttling nozzle 4-1, the suction device body 4-2 is fixed on the top of a cement paste tank 5, the outlet of the suction device body 4-2 is connected with a bent pipe 6 which extends downwards into the cement paste tank 5, and the non-threaded end plane of the throttling nozzle 4-1 is provided with two mounting grooves 4-1-1 which are mounted in the suction device body 4-2 through threads; the auger conveyor 2 and the ash loading hopper 8 convey cement ash to the hopper bodies 7-3.
In this embodiment, the external threads on the threaded rod 1-2 are matched with the internal threads of the internal thread cylinder 7-1, and the thread lengths of the two threads are equal. The stirring rods 1-4 are three cylinders and are spirally welded on the polish rods 1-3 at intervals of 120 degrees from top to bottom. The throttling nozzle 4-1 can be replaced with different inner diameters to adjust the speed of cement ash injection. The bent pipe 6 extends downwards into the cement paste tank 5 at an angle of 45 degrees with the horizontal plane. The aspirator body 4-2 is fixed on the top of a cement slurry tank 5 through two circular clamps 3. The funnel body is a quadrangular frustum pyramid shaped funnel, and the supporting rod is two sections of cylinders with equal length and is welded in the funnel body.
The stirring rods 1-4 are three cylinders, are spirally welded on the polish rod 1-3 at intervals of 120 degrees from top to bottom, and play a role in stirring cement ash in the hopper body. The switch plug is welded at the lowest end of the polish rod, the diameter of the switch plug is equal to that of the feed opening of the funnel body, and the switch plug can be inserted into the feed opening to play a role in starting and stopping cement ash injection. The internal threaded barrel supports the funnel switch agitator.
Before cement paste is prepared, cement ash in the ash loading hopper is transported into the hopper body by the auger conveyor. When the switch stopper is opened to the needs and cement ash is poured into, anticlockwise rotation hand wheel, threaded rod internal thread section of thick bamboo internal rotation and rebound drive switch stopper rebound, when up to the threaded rod completely unscrews the internal thread section of thick bamboo, continue rotatory hand wheel, threaded rod supports on the internal thread section of thick bamboo, only is rotary motion, drives the puddler rotation on the polished rod, and the cement ash in the stirring funnel body guarantees the quick smooth injection efflux aspirator of cement ash. When the switch plug needs to be closed, the hand wheel is rotated clockwise until the switch plug closes the funnel body.
The interior of the aspirator body is provided with internal threads for installing the throttling nozzle. The throttling nozzle is a cylinder with a middle drilled hole, and external threads matched with the internal threads of the aspirator body are arranged on the outer portion of the throttling nozzle. Two mounting grooves are formed in the non-threaded end plane of the throttling nozzle, so that the throttling nozzle is convenient to replace.
When cement paste is prepared, water flows through the throttling nozzle, the water flow speed is increased under the throttling action, a jet flow suction effect is generated at the lower part of the funnel body, cement ash is sucked into the suction device body and is fully mixed with water, then the cement ash flows through the bent pipe and is sprayed into the cement paste tank at an inclination angle of 45 degrees, and simultaneously, the impulsive force is formed and the liquid rotational flow in the cement paste tank is driven, so that the cement paste is further prepared. Under the construction condition of the same pump pressure and discharge capacity, the speed of injecting cement ash can be adjusted by replacing the throttling nozzles with different inner diameters.
The utility model discloses a efflux suction allotment grout device's theory of operation does: before cement paste is prepared, cement ash in the ash loading hopper 8 is transported to the hopper body 7-3 by the auger conveyor 2. When the switch plug 1-5 needs to be opened to inject cement ash, the hand wheel 1-1 is rotated anticlockwise, the threaded rod 1-2 rotates in the internal threaded cylinder 7-1 and moves upwards to drive the switch plug 1-5 to move upwards, and when the threaded rod 1-2 is completely screwed out of the internal threaded cylinder 7-1, the hand wheel 1-1 is continuously rotated, the threaded rod 1-2 is supported on the internal threaded cylinder 7-1 and only rotates to drive the stirring rod 1-5 on the polished rod 1-3 to rotate, and cement ash in the stirring funnel body 7-3 is stirred. When the switch plug 1-5 needs to be closed, the hand wheel 1-1 is rotated clockwise until the switch plug 1-5 closes the funnel body 7-3. When the cement paste is prepared, water flows through the throttling nozzle 4-1, the water flow speed is increased under the throttling action, the jet flow suction action is generated at the lower part of the funnel body 7-3, cement ash is sucked into the suction device body 4-2 and is fully mixed with water, then the cement ash flows through the bent pipe 6 and is sprayed into the cement paste tank 5 at an inclination angle of 45 degrees, and simultaneously the thrust force is formed and the liquid in the cement paste tank 5 is driven to swirl, so that the cement paste is further prepared.
As shown in fig. 7, the utility model discloses a efflux suction allotment grout device's working process does:
(1) cement ash is filled into the ash filling funnel 8, the auger conveyor 2 is started, and the cement ash is conveyed into the funnel body 7-3 for standby; at the moment, the No. 2 valve 10 and the No. 4 valve 12 are in a closed state, and the No. 1 valve 9 and the No. 3 valve 11 are in an open state;
(2) the slurry pump 15 is started and the switch plugs 1-5 are opened. Water enters a mud pump 15 from a clean water tank 14 through a No. 3 valve 11 and a pump inlet 17 to be pressurized, then is pumped into the jet flow suction device 4 through a pump outlet 16, cement ash in the funnel body 7-3 is sucked into the suction device body 4-2, is mixed with clean water, and then is sprayed into a cement slurry tank 5 through a bent pipe 6;
(3) when the design clear water amount is reached, the valve 4 is opened firstly, then the valve 3 is closed, the cement slurry in the cement slurry tank 5 is sucked into the pump by the slurry pump 15, and then is sprayed into the cement slurry tank 5 again through the valve 1 9, the jet flow suction device 4 and the bent pipe 6 to form closed circulation, and the cement slurry is further prepared.
(4) After cement paste is completely and uniformly blended, the valve 10 No. 2 is opened, the valve 9 No. 1 is closed, cement paste in the cement paste tank 5 is pumped into a well through the wellhead device 13, and cement injection construction is carried out until all the cement paste is injected.
(5) And stopping the cement pump 15, and finishing the construction.
In summary, the present invention is not limited to the above embodiments, and those skilled in the art can provide other embodiments within the technical teaching of the present invention, but these embodiments are included in the scope of the present invention.
Claims (6)
1. A device for pumping and mixing cement slurry by jet flow is characterized by comprising an injection hopper (7), a hopper switch stirrer (1), an auger conveyor (2) and an ash loading hopper (8), the device comprises a jet flow suction device (4), a cement paste tank (5) and a bent pipe (6), wherein an injection funnel (7) comprises a funnel body (7-3), support rods (7-2) and an internal thread cylinder (7-1), the bottom of a feed opening of the funnel body (7-3) is connected with the jet flow suction device (4) through a flange, the outer walls of two sides of the vertically arranged internal thread cylinder (7-1) are respectively and symmetrically welded with one support rod (7-2), and the free ends of the two support rods (7-2) are welded to the inner wall of the top of the funnel body, so that the central axis of the internal thread cylinder (7-1) is coincided with the central axis of the feed opening at the bottom of the; the funnel switch stirrer (1) comprises a hand wheel (1-1), a threaded rod (1-2), a polished rod (1-3), stirring rods (1-4) and a switch plug (1-5), wherein the hand wheel (1-1) is installed at the top end of the threaded rod (1-2), the polished rod (1-3) with the outer diameter smaller than that of the threaded rod (1-2) is welded at the lower end of the threaded rod (1-2), a plurality of stirring rods (1-4) are welded on the polished rod (1-3), the bottom of the polished rod is welded with the switch plug (1-5) matched with a feed opening of a funnel body, the threaded rod (1-2) is screwed in an internal thread cylinder (7-1), the opening and closing of the switch plugs (1-5) and the rotation and stirring of the stirring rods (1-4) in the funnel bodies (7-3) are controlled by driving the threaded rods through the hand wheels; the jet flow suction device (4) comprises a suction device body (4-2) and a throttling nozzle (4-1), the suction device body (4-2) is fixed on the top of a cement slurry tank (5), an outlet of the suction device body (4-2) is connected with a bent pipe (6) which extends downwards into the cement slurry tank (5), two mounting grooves (4-1-1) are formed in the non-threaded end plane of the throttling nozzle (4-1), and the throttling nozzle is mounted in the suction device body (4-2) through threads; the auger conveyor (2) and the ash loading hopper (8) convey cement ash into the hopper body (7-3).
2. Device for jet suction mixing of cement paste according to claim 1, characterized in that the external thread of the threaded rod (1-2) is matched to the internal thread of the internally threaded cartridge (7-1) and has the same length.
3. Device for injecting suction grout according to claim 1, wherein said stirring rods (1-4) are three cylinders, which are spirally welded on the smooth rod (1-3) from top to bottom at equal distances of 120 °.
4. Device for jet suction mixing of cement slurries according to claim 1, characterized in that the throttling nozzles (4-1) can be replaced with different internal diameters to adjust the speed of injection of the cement ashes.
5. Device for injecting suction mix cement paste according to claim 1, characterised in that said elbow (6) extends downwards into the cement tank (5) at an angle of 45 ° with respect to the horizontal plane.
6. Device for jet suction mixing of cement slurries according to claim 1, characterized in that the suction body (4-2) is fixed on top of the cement tank (5) by means of two circular clamps (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921218132.6U CN210679132U (en) | 2019-07-30 | 2019-07-30 | Device for spraying, sucking and blending cement paste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921218132.6U CN210679132U (en) | 2019-07-30 | 2019-07-30 | Device for spraying, sucking and blending cement paste |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210679132U true CN210679132U (en) | 2020-06-05 |
Family
ID=70900403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921218132.6U Expired - Fee Related CN210679132U (en) | 2019-07-30 | 2019-07-30 | Device for spraying, sucking and blending cement paste |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210679132U (en) |
-
2019
- 2019-07-30 CN CN201921218132.6U patent/CN210679132U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210420 Address after: 300457 Tianjin Binhai New Area Development Zone No. second, No. 83, China Petroleum Tianjin building Bohai Drilling Engineering Co., Ltd. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Patentee after: CHINA NATIONAL PETROLEUM Corp. Address before: 300457 Tianjin Economic Development Zone, No. 83, No. second main street, Tianjin, China Petroleum Building, Bohai Drilling Engineering Co., Ltd. Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200605 |
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| CF01 | Termination of patent right due to non-payment of annual fee |