CN215369810U - Be used for fracturing acidizing check valve in pit - Google Patents
Be used for fracturing acidizing check valve in pit Download PDFInfo
- Publication number
- CN215369810U CN215369810U CN202122214492.2U CN202122214492U CN215369810U CN 215369810 U CN215369810 U CN 215369810U CN 202122214492 U CN202122214492 U CN 202122214492U CN 215369810 U CN215369810 U CN 215369810U
- Authority
- CN
- China
- Prior art keywords
- fixedly connected
- baffle
- round hole
- liquid outlet
- way valve
- 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.)
- Expired - Fee Related
Links
- 239000007788 liquid Substances 0.000 claims abstract description 46
- 238000007789 sealing Methods 0.000 claims abstract description 27
- 230000000694 effects Effects 0.000 claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 238000001125 extrusion Methods 0.000 claims abstract description 12
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 9
- 238000003860 storage Methods 0.000 claims description 5
- 238000005728 strengthening Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 239000002253 acid Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 230000000151 anti-reflux effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Landscapes
- Check Valves (AREA)
Abstract
The utility model discloses a downhole fracturing and acidizing one-way valve which comprises a device shell, wherein pipelines are respectively inserted into the left end and the right end of the device shell, a baffle is fixedly connected to the left side of an inner cavity of the device shell, round holes are formed in the left side and the right side of the upper side and the lower side of the baffle in a penetrating mode, a fixing plate, a sealing plate, a first spring and a baffle ring are arranged inside each round hole, liquid in each round hole can only flow from left to right, a reinforcing frame is fixedly connected to the right side of the inner cavity of the device shell, a rectangular opening is formed in the middle of the reinforcing frame, sealing strips are movably inserted into the upper end and the lower end of each rectangular opening, a liquid outlet is formed in the upper side and the lower side of the left end of the reinforcing frame, a second sealing column is movably inserted into the inner side of the liquid outlet, and extrusion rod mechanisms are fixedly connected to the front side and the rear side of each sealing strip. Through the overall structure of equipment, the anti-return effect of increase equipment that can be great, and baffle and reinforcing frame can also be great increase the intensity of device casing.
Description
Technical Field
The utility model relates to the technical field of one-way valves, in particular to a one-way valve for underground fracturing and acidizing.
Background
Fracture acidizing is called acid fracturing for short. The fracturing without proppant is carried out by using acid liquor as fracturing fluid under the condition that the pressure is higher than the fracture pressure of the stratum. The wall surface of the crack is corroded into an uneven surface by the corrosion action of the acid liquor in the acid fracturing process, so that the wall surface of the crack cannot be completely closed after the pump is stopped to relieve pressure. Therefore, the composite material has higher flow conductivity and obvious effect on recovering and improving the production capacity of an oil well. The method is suitable for carbonate reservoirs.
In the process of using the underground fracturing acidizing, a pipeline needs to be connected with a one-way valve, but when the common one-way valve is used, the whole structure is not stable enough, and the reverse sealing stability of equipment is not high, so that the underground fracturing acidizing one-way valve is provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a one-way valve for underground fracturing and acidizing, which can greatly improve the backflow prevention effect of equipment, and the strength of a shell of the device can be greatly improved by a baffle and a reinforcing frame.
The utility model discloses a technical scheme for an underground fracturing and acidizing one-way valve, which comprises a device shell, wherein pipelines are respectively inserted at the left end and the right end of the device shell, a baffle plate is fixedly connected to the left side of an inner cavity of the device shell, round holes penetrate through the left side and the right side of the baffle plate, a fixing plate, a sealing plate, a first spring and a baffle ring are arranged in each round hole, liquid in each round hole can only flow from left to right,
the utility model discloses a device, including device casing, sealed slat, extrusion rod mechanism, buffer chamber, second spring and ejector pin, the frame is strengthened to the inner chamber right side fixedly connected with of device casing, the middle part of strengthening the frame is opened there is the rectangle mouth, and the activity of the upper and lower ends of rectangle mouth is pegged graft and is had sealed slat, it has the liquid outlet to strengthen the left end upside of frame and open, the inboard activity of liquid outlet is pegged graft and is had the sealed post of second, side fixedly connected with extrusion rod mechanism around between the sealed slat, extrusion rod mechanism is including storage housing, cushion chamber, second spring and ejector pin, extrusion rod mechanism can exert the power of downside that makes progress to the sealed slat of downside.
According to the preferable scheme, the number of the round holes is at least eight, the round holes are equidistantly formed in the upper side and the lower side of the baffle, a fixing plate is fixedly connected to the left side of the inside of each round hole, the outer side of the fixing plate is provided with four first through holes in an annular array mode, first sealing columns are movably inserted into the through holes, the right ends of the first sealing columns are fixedly connected to the left end of the sealing plate, second through holes penetrate through the middle of the sealing plate, the right ends of the inner cavities of the round holes are fixedly connected with baffle rings, and first springs are arranged between the baffle rings and the sealing plate.
As a preferred scheme, the number of the liquid outlets is equal to the number of the round holes, and the liquid outlets and the round holes are oppositely arranged left and right.
As the preferred scheme, the front end and the rear end of the sealing strip plate are fixedly connected with sliding blocks, and the sliding blocks are movably inserted into the rectangular sliding grooves in the front side wall and the rear side wall of the rectangular opening in the middle of the reinforcing frame.
As the preferred scheme, the inner side of the storage shell is provided with a buffer cavity, the inner cavity of the buffer cavity is inserted with a mandril in a sliding mode through a limiting block, and a second spring is arranged between the lower end of the mandril and the lower end of the buffer cavity.
The utility model discloses a downhole fracturing and acidizing one-way valve which has the beneficial effects that:
through the overall structure of equipment, when the backward flow appears in liquid, liquid can get into the inner chamber right side of device casing to can strike two sealed slats, thereby seal the liquid outlet, avoid liquid to appear the backward flow, and the closing plate can make first sealed post peg graft again in the inside of through-hole under the effect of first spring, the anti-reflux effect of great increase equipment, and the baffle can also great increase the intensity of device casing with the enhancement frame.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a cross-sectional view of a circular hole in accordance with the present invention;
fig. 4 is a cross-sectional view of the squeeze lever mechanism of the present invention.
In the figure: the device comprises a device shell 1, a pipeline 2, a baffle 3, a round hole 4, a fixing plate 41, a first through hole 42, a first sealing column 43, a sealing plate 44, a second through hole 45, a first spring 46, a retaining ring 47, a reinforcing frame 5, a liquid outlet 6, a second sealing column 7, a sealing strip plate 8, an extrusion rod mechanism 9, a storage shell 91, a buffer cavity 92, a second spring 93, a mandril 94 and a rectangular sliding chute 10.
Detailed Description
The utility model will be further elucidated and described with reference to the embodiments and drawings of the specification:
referring to fig. 1-4, the present invention: the utility model provides a be used for fracturing acidizing check valve in pit, includes device casing 1, it has pipeline 2 to peg graft respectively at both ends about device casing 1, the inner chamber left side fixedly connected with baffle 3 of device casing 1, it has round hole 4 to run through about the upper and lower side of baffle 3, the inside of round hole 4 is equipped with fixed plate 41, closing plate 44, first spring 46 and fender ring 47, the inside liquid of round hole 4 only can flow when liquid flows back from a left side right side, and liquid can get into the inner chamber right side of device casing 1 to can strike two sealed slats 8, thereby seal up liquid outlet 6, avoid liquid to flow back, and closing plate 44 is under the effect of first spring 46, can make first sealed post 43 peg graft again in the inside of through-hole 42, avoid liquid to flow back.
The device casing 1's inner chamber right side fixedly connected with strengthens frame 5, it has the rectangle mouth to strengthen the middle part of frame 5, and the activity of the upper and lower end of rectangle mouth is pegged graft and is had sealed slat 8, it has liquid outlet 6 to strengthen the upper and lower side of the left end of frame 5 and open, the inboard activity of liquid outlet 6 is pegged graft and is had second seal post 7, side fixedly connected with extrusion stem mechanism 9 around between the sealed slat 8, extrusion stem mechanism 9 is including storage casing 91, cushion chamber 92, second spring 93 and ejector pin 94, extrusion stem mechanism 9 can exert the power of the downside that makes progress to sealed slat 8 of the downside. The housing case 91 and the jack 94 can be displaced up and down, and the second spring 93 is always in a pressed state.
As shown in fig. 2 and 3:
the round hole 4 is equipped with eight at least, the round hole 4 equidistance is opened at the last downside of baffle 3, the inside left side fixedly connected with fixed plate 41 of round hole 4, the outside of fixed plate 41 is the annular array and opens and has four first through-holes 42, the inside activity grafting of through-hole 42 has first sealed post 43, the right-hand member fixed connection of first sealed post 43 is at the left end of closing plate 44, the middle part of closing plate 44 is run through to open has second through-hole 45, the inner chamber right-hand member fixedly connected with of round hole 4 keeps off ring 47, keep off and be equipped with first spring 46 between ring 47 and the closing plate 44. When constantly getting into liquid, inside pressure constantly increases to exert the power of rightwards to the first sealed post 43 of pegging graft, thereby promote closing plate 44 displacement right, thereby make first sealed post 43 break away from through-hole 42, make liquid pass through the inboard right side that second through-hole 45 discharged round hole 4.
As shown in fig. 1:
the quantity of liquid outlet 6 equals the quantity of round hole 4, relative setting about liquid outlet 6 and round hole 4. The liquid flowing out of the circular hole 4 flows into the corresponding liquid outlet 6.
As shown in fig. 1:
the front end and the rear end of the sealing strip plate 8 are fixedly connected with sliding blocks, and the sliding blocks are movably inserted into the rectangular sliding grooves 10 on the front side wall and the rear side wall of the rectangular opening in the middle of the reinforcing frame 5. The sealing strip 8 is capable of sealing the liquid outlet 6.
As shown in fig. 1:
the inner side of the accommodating shell 91 is provided with a buffer cavity 92, the inner cavity of the buffer cavity 92 is inserted with a mandril 94 through a limiting block in a sliding manner, and a second spring 93 is arranged between the lower end of the mandril 94 and the lower end of the buffer cavity 92. The housing case 91 and the jack 94 can be displaced up and down, and the second spring 93 is always in a pressed state.
The principle is as follows: when the device is connected for use, the liquid inlet of the 2-position pipeline on the left side and the liquid outlet of the 2-position pipeline on the right side are arranged, when liquid enters the device shell 1, the liquid returns to the inside of each round hole 4, when the liquid continuously enters, the internal pressure is continuously increased, so that right force is applied to the inserted first sealing column 43, the sealing plate 44 is pushed to displace rightwards, the first sealing column 43 is separated from the through hole 42, the liquid is discharged into the right side of the inner side of the round hole 4 through the second through hole 45 and then enters the inside of the liquid outlet 6 rightwards, force is applied to the two sealing strips 8, the two sealing strips 8 move relatively, the liquid enters the right side of the inner cavity of the device shell 1 and is discharged through the pipeline 2 on the right side,
and when liquid backward flow appeared, liquid can get into the inner chamber right side of device casing 1 to can strike two sealed laths 8, thereby seal up liquid outlet 6, avoid liquid to appear backward flow, and sealing plate 44 under the effect of first spring 46, can make first sealed post 43 peg graft again in the inside of through-hole 42, avoid liquid to flow backward.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (5)
1. A one-way valve for downhole fracture acidizing, comprising a device housing (1), characterized in that: the device comprises a device shell (1), pipelines (2) are respectively inserted at the left end and the right end of the device shell (1), a baffle (3) is fixedly connected to the left side of an inner cavity of the device shell (1), round holes (4) penetrate through the left side and the right side of the upper side and the lower side of the baffle (3), a fixing plate (41), a sealing plate (44), a first spring (46) and a baffle ring (47) are arranged inside the round holes (4), liquid in the round holes (4) can only flow from left to right,
frame (5) is strengthened to inner chamber right side fixedly connected with of device casing (1), open at the middle part of strengthening frame (5) has the rectangle mouth, and the activity of the upper and lower end of rectangle mouth is pegged graft and is had sealed slat (8), it has liquid outlet (6) to strengthen the downside on the left end of frame (5), the inboard activity of liquid outlet (6) is pegged graft and is had second sealed post (7), side fixedly connected with extrusion stem mechanism (9) around between sealed slat (8), extrusion stem mechanism (9) are including storage housing (91), cushion chamber (92), second spring (93) and ejector pin (94), extrusion stem mechanism (9) can exert the power of downside that makes progress to sealed slat (8) of the downside.
2. The one-way valve for downhole fracture acidizing according to claim 1 wherein: round hole (4) are equipped with eight at least, the last downside at baffle (3) is opened to round hole (4) equidistance, the inside left side fixedly connected with fixed plate (41) of round hole (4), the outside of fixed plate (41) is the annular array and opens there are four first through-holes (42), the inside activity of through-hole (42) is pegged graft and is had first sealed post (43), the right-hand member fixed connection of first sealed post (43) is at the left end of closing plate (44), the middle part of closing plate (44) is run through and is opened second through-hole (45), the inner chamber right-hand member fixedly connected with of round hole (4) keeps off ring (47), keep off and be equipped with first spring (46) between ring (47) and closing plate (44).
3. The one-way valve for downhole fracture acidizing according to claim 1 wherein: the quantity of liquid outlet (6) equals the quantity of round hole (4), relative setting about liquid outlet (6) and round hole (4).
4. The one-way valve for downhole fracture acidizing according to claim 2 wherein: the front end and the rear end of the sealing strip plate (8) are fixedly connected with sliding blocks, and the sliding blocks are movably inserted into the rectangular sliding grooves (10) on the front side wall and the rear side wall of the rectangular opening in the middle of the reinforcing frame (5).
5. The one-way valve for downhole fracture acidizing according to claim 1 wherein: the inner side of the accommodating shell (91) is provided with a buffer cavity (92), the inner cavity of the buffer cavity (92) is inserted with a mandril (94) through a limiting block in a sliding mode, and a second spring (93) is arranged between the lower end of the mandril (94) and the lower end of the buffer cavity (92).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122214492.2U CN215369810U (en) | 2021-09-14 | 2021-09-14 | Be used for fracturing acidizing check valve in pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122214492.2U CN215369810U (en) | 2021-09-14 | 2021-09-14 | Be used for fracturing acidizing check valve in pit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215369810U true CN215369810U (en) | 2021-12-31 |
Family
ID=79620071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122214492.2U Expired - Fee Related CN215369810U (en) | 2021-09-14 | 2021-09-14 | Be used for fracturing acidizing check valve in pit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215369810U (en) |
-
2021
- 2021-09-14 CN CN202122214492.2U patent/CN215369810U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110374552A (en) | Passage method is established on a kind of big orifice toe-end sliding sleeve and wellbore casing and stratum | |
| CN109138877A (en) | Fixed ball seat circulating valve, using its drilling equipment and drilling well, blocking method | |
| CN215369810U (en) | Be used for fracturing acidizing check valve in pit | |
| CN204753611U (en) | Deep basal pit pressure -bearing water precipitation gas well gas bag plugging device | |
| CN113153249A (en) | Eccentric water distributor | |
| CN202338481U (en) | Automatic liquid-discharging plunger of gas well | |
| CN105569607B (en) | A kind of oil field electric submerged pump production oil well Multifunctional well-flushing valve | |
| CN216588536U (en) | Oil well packer | |
| CN208669240U (en) | Fixed ball seat circulating valve and the drilling equipment for using it | |
| CN204984366U (en) | Increase lifting devices in pit reciprocates | |
| CN110847846B (en) | Packer for oil field exploitation | |
| CN206681697U (en) | A kind of automatic control blanking plug | |
| CN210218080U (en) | Two-way through-stop bottom valve of blowout-preventing oil well pump | |
| CN208364090U (en) | Multiple groups packing element well packer capable of flushing well | |
| CN208122813U (en) | Packer for blocking water is looked in anti-sand setting sand-blockage oil field | |
| CN207393172U (en) | A kind of hypotonic stripper well more wells linkage gas-drive oil-production apparatus | |
| CN206737883U (en) | The repeatable switch pilot backwash valve of one kind | |
| CN213176920U (en) | Drip-proof check valve | |
| CN204371206U (en) | Blanking plug | |
| CN111852844A (en) | Flexible metal oil well pump device in horizontal well and resetting device of fixed valve ball | |
| CN206681957U (en) | Three plunger mining pumps | |
| CN101782060A (en) | Hydraulic oil pump | |
| CN110145358B (en) | Multi-cavity sectional type down gas extraction drilling and drainage device and method | |
| CN206562923U (en) | Washing well HTHP water injection packer | |
| CN105570107B (en) | Pressure-driven butterfly piece piston pump and method for draining liquid through pressure-driven butterfly piece piston pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211231 |