CN210622774U - Erosion-resistant filling bypass sieve tube for oilfield exploitation - Google Patents
Erosion-resistant filling bypass sieve tube for oilfield exploitation Download PDFInfo
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- CN210622774U CN210622774U CN201921757172.8U CN201921757172U CN210622774U CN 210622774 U CN210622774 U CN 210622774U CN 201921757172 U CN201921757172 U CN 201921757172U CN 210622774 U CN210622774 U CN 210622774U
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Abstract
The utility model discloses an oil field is opened and is adopted anti erosion to fill bypass screen pipe, this oil field is opened and is adopted anti erosion to fill bypass screen pipe and fill the sand control use that the instrument is filled to the cooperation, goes into the design well depth after will multistage series connection, and the pump sending mortar gets into the second of the overflow passageway of honeycomb duct lower extreme through the passageway one that overflows between top connection inner wall and the sealed intubate outer wall, later gets into the passageway three that overflows of the inside setting of bypass pipe, partial mortar process the filling passageway that sets up on two of them bypass pipe gets into the stratum, and through the filtration of compound filter layer, liquid returns ground through the liquid flow channel that sets up on the parent tube, and the mortar of another part gets into the next set of four of the flow channels that set up on the bottom connection upper end after overflowing passageway three that the inside of bypass pipe set up and enters next set up in this oil field, And a second sealing ring, a third sealing ring and a fourth sealing ring further enhance the connection stability of all the parts.
Description
Technical Field
The utility model relates to a device is used in the oil field, specifically is an oil field is opened and is adopted resistant erosion to fill bypass screen pipe.
Background
The sand production condition of the oil reservoir is increasingly serious as the development of the oil field enters the middle and later stages. The sand production can cause abrasion and erosion of surface equipment and downhole tools (such as pumps, separators, heaters, pipelines, etc.), bridging or plugging the well bore, reducing or forcing the production of the well to stop.
In the development of oil fields, due to the problems of early sand bridges, stratum collapse, irregular local well bores and the like existing in long horizontal sections and complex stratums, the gravel packing of the long horizontal sections and the complex stratums is always a technical problem, the quality of gravel packing of the long horizontal sections, deepwater oil and gas reservoirs or complex well conditions cannot be guaranteed by the conventional sand control pipes at present, so that the normal development and production of the oil fields are greatly influenced, and the erosion-resistant packing bypass screen pipe for the oil fields is urgently needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an oil field is opened and is adopted resistant erosion to fill bypass screen pipe to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
an erosion-resistant filling bypass sieve tube for oilfield exploitation comprises an upper connector, wherein an external thread I is arranged on the outer side of the upper end of the upper connector, an internal thread I is arranged on the inner side of the lower end of the upper connector, a lower end sleeve of the upper connector is sleeved on the outer side of a flow guide tube, an internal thread II is arranged on the inner wall of the lower end of the flow guide tube, a lower end sleeve of the flow guide tube is arranged on the outer side of an upper adapter, an internal thread III is arranged on the inner side of the upper end of the upper adapter, an upper end sleeve of the upper adapter is sleeved on the outer side of a sealing insertion tube, an internal thread IV is arranged on the inner side of the lower end of the upper adapter, a lower end sleeve of the upper adapter is sleeved on the outer side of a base tube, an upper fixing ring is sleeved on the outer wall, the upper end surface of the outer protective sleeve is fixedly connected with an upper fixing ring, a composite filter layer is sleeved on the outer side of the base tube, the upper end surface and the lower end surface of the composite filter layer are fixedly connected with the base tube, a plurality of bypass tubes are arranged on the outer side of the composite filter layer, the outer walls of the plurality of bypass tubes are connected with the outer protective sleeve, an external thread II is arranged on the outer wall of the lower end of the base tube, a lower adapter is sleeved outside the lower end of the base tube, a lower fixing ring is sleeved on the outer wall of the lower adapter and connected with a lower adapter, the lower end surface of the bypass tube is connected with the lower fixing ring, the lower end of the lower adapter is sleeved outside the lower adapter, an internal thread V is arranged on the inner side of the lower adapter, a lower protective sleeve is sleeved outside the lower joint, the lower end surface, the upper end face of the lower protective sleeve is connected with the lower fixing ring, and an internal thread six matched with the external thread one arranged on the upper joint is arranged on the inner side of the lower end of the lower joint.
As a further aspect of the present invention: the upper protective sleeve is fixedly connected with the flow guide pipe in a welding mode, the upper fixing ring is fixedly connected with the upper conversion joint in a welding mode, the lower end face of the upper protective sleeve is fixedly connected with the upper fixing ring in a welding mode, the upper end face of the outer protective sleeve is fixedly connected with the upper fixing ring in a welding mode, the upper end face and the lower end face of the composite filter layer are fixedly connected with the base pipe in a welding mode, the outer wall of the bypass pipe is fixedly connected with the outer protective sleeve in a welding mode, the upper end face of the bypass pipe is fixedly connected with the upper fixing ring in a welding mode, the fixing ring is fixedly connected with the lower conversion joint in a welding mode, the lower end face of the bypass pipe is fixedly connected with the lower fixing ring in.
As a further aspect of the present invention: the composite filter layer is composed of an inner protective sleeve, an inner diffusion net, an inner filter net, a supporting net and an outer filter net from inside to outside in sequence.
As a further aspect of the present invention: the number of the bypass pipes is five.
As a further aspect of the present invention: be provided with between upper joint inner wall and the sealed intubate outer wall and flow through passageway one, the honeycomb duct lower extreme is equipped with more than one and overflows passageway two, many the inside of bypass pipe all is provided with and overflows passageway three, many be provided with more than one filling passageway on two bypass pipes in the bypass pipe, the spiral distribution has a plurality of liquid flow channels on the parent tube, the lower joint upper end is provided with and overflows passageway four.
As a further aspect of the present invention: the outer protective sleeve is of a stamping structure.
As a further aspect of the present invention: be provided with sealing washer one between honeycomb duct lower extreme inner wall and the last conversion joint outer wall, be provided with sealing washer two between sealed intubate lower extreme outer wall and the last conversion joint inner wall, be provided with sealing washer three between lower conversion joint inner wall and the lower clutch upper end outer wall, sealed intubate outer wall upper end is provided with two sealing washers four.
As a further aspect of the present invention: the first sealing ring, the second sealing ring, the third sealing ring and the fourth sealing ring are all O-shaped rubber rings.
Compared with the prior art, the beneficial effects of the utility model are that: the oil field opening adopts the erosion-resistant filling bypass sieve tube to be matched with a filling tool for filling and sand prevention, multiple stages of the bypass sieve tube are connected in series and then are put into a designed well depth, pumping mortar enters a second overflowing channel at the lower end of a diversion tube through a first overflowing channel between the inner wall of an upper joint and the outer wall of a sealing insertion tube, then enters a third overflowing channel arranged inside the diversion tube, part of the mortar enters the stratum through filling channels arranged on two of the diversion tubes and is filtered by a composite filter layer, liquid returns to the ground through a liquid flowing channel arranged on a base tube, the other part of the mortar enters a fourth overflowing channel arranged at the upper end of a lower joint through the third overflowing channel arranged inside the diversion tube and enters a next set of the erosion-resistant filling bypass sieve tube for the oil field opening until the oil field opening connected in series is filled with the erosion-resistant filling bypass sieve tube, and a first sealing ring is arranged between the inner, be provided with sealing washer two between sealed intubate lower extreme outer wall and the last change-over joint inner wall, be provided with sealing washer three between lower crossover joint inner wall and the lower clutch upper end outer wall, sealed intubate outer wall upper end is provided with two sealing washers four, through setting up sealing washer one, sealing washer two, sealing washer three and sealing washer four, and the steadiness of connecting between each part of this oil field of further reinforcing division adoption erosion-resistant filling bypass screen pipe of adoption.
Drawings
FIG. 1 is a schematic diagram of an erosion resistant packing bypass screen for oilfield development.
FIG. 2 is a cross-sectional view at A-A of an oilfield development using an erosion resistant packed bypass screen.
FIG. 3 is a cross-sectional view at E of an oilfield development using an erosion resistant packing bypass screen.
In the figure: 1-four sealing rings, 2-upper joints, 3-sealed insertion pipes, 4-flow guide pipes, 5-upper protective sleeves, 6-first sealing rings, 7-second sealing rings, 8-upper adapter joints, 9-upper fixed rings, 10-base pipes, 11-by-pass pipes, 12-composite filter layers, 13-outer protective sleeves, 14-lower fixed rings and 15-lower adapter joints, 16-a sealing ring III, 18-a lower protective sleeve, 19-a lower joint, 20-a flow passage I, 21-a flow passage II, 22-a flow passage III, 23-a filling passage, 24-a liquid flow passage, 25-a flow passage IV, 1201-an outer filter screen, 1202-a support screen, 1203-an inner filter screen, 1204-an inner diffusion screen and 1205-an inner protective sleeve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
Referring to fig. 1 to 3, in an embodiment of the present invention, an erosion-resistant filling bypass screen pipe for oil field development comprises an upper joint 2, wherein an outer thread a is disposed on an outer side of an upper end of the upper joint 2, an inner thread a is disposed on an inner side of a lower end of the upper joint 2, a lower end of the upper joint 2 is sleeved on an outer side of a flow guide pipe 4, the flow guide pipe 4 is fixedly connected to the upper joint through the inner thread a disposed on the upper joint 2, an inner thread two is disposed on an inner wall of a lower end of the flow guide pipe 4, a lower end of the flow guide pipe 4 is sleeved on an outer side of an upper adapter 8, the upper adapter 8 is fixedly connected to the upper adapter through the inner thread two disposed on the flow guide pipe 4, an inner thread three is disposed on an inner side of an upper end of the upper adapter 8, the upper adapter 8 is sleeved on an outer side of a, the inner side of the lower end of the upper adapter 8 is provided with a fourth internal thread, the lower end of the upper adapter 8 is sleeved on the outer side of the base pipe 10, the base pipe 10 is fixedly connected with the base pipe 10 through the fourth internal thread arranged on the upper adapter 8, the outer side of the guide pipe 4 is sleeved with an upper protective sleeve 5, the connection mode of the upper protective sleeve 5 and the guide pipe 4 is not limited, in the embodiment, the upper protective sleeve 5 is preferably fixedly connected with the guide pipe 4 through welding, the outer wall of the upper adapter 8 is sleeved with an upper fixing ring 9, the connection mode of the upper fixing ring 9 and the upper adapter 8 is not limited, in the embodiment, the upper fixing ring 9 is preferably fixedly connected with the upper adapter 8 through welding, the lower end face of the upper protective sleeve 5 is fixedly connected with the upper fixing ring 9, and the connection mode of the lower end face of the upper protective sleeve 5 and the upper fixing ring 9, in this embodiment, it is preferable that the lower end surface of the upper protection sleeve 5 is fixedly connected with the upper fixing ring 9 by welding, the lower end of the upper fixing ring 9 is provided with an outer protection sleeve 13, the upper end surface of the outer protection sleeve 13 is fixedly connected with the upper fixing ring 9, the connection mode between the upper end surface of the outer protection sleeve 13 and the upper fixing ring 9 is not limited, and in this embodiment, it is preferable that the upper end surface of the outer protection sleeve 13 is fixedly connected with the upper fixing ring 9 by welding.
The outer side of the base pipe 10 is sleeved with a composite filter layer 12, the upper end surface and the lower end surface of the composite filter layer 12 are fixedly connected with the base pipe 10, the connection mode of the upper end surface and the lower end surface of the composite filter layer 12 and the base pipe 10 is not limited, in the embodiment, the upper end surface and the lower end surface of the composite filter layer 12 are preferably fixedly connected with the base pipe 10 through welding, the specific form of the composite filter layer 12 is not limited, in the embodiment, the composite filter layer 12 is preferably formed by an inner protective sleeve 1205, an inner diffusion net 1204, an inner filter net 1203, a support net 1202 and an outer filter net 1201 from inside to outside in sequence.
A plurality of bypass pipes 11 are arranged outside the composite filter layer 12, outer walls of the plurality of bypass pipes 11 are all connected with an outer protective sleeve 13, a connection mode between the outer walls of the plurality of bypass pipes 11 and the outer protective sleeve 13 is not limited, in the embodiment, preferably, the outer walls of the bypass pipes 11 and the outer protective sleeve 13 are fixedly connected through welding, in the embodiment, preferably, the number of the bypass pipes 11 is five, the upper end face of each bypass pipe 11 is connected with an upper fixing ring 9, a connection mode between the upper end face of each bypass pipe 11 and the upper fixing ring 9 is not limited, in the embodiment, preferably, the upper end face of each bypass pipe 11 is fixedly connected with the upper fixing ring 9 through welding, an external thread II is arranged on the outer wall of the lower end of the base pipe 10, a lower adapter 15 is sleeved outside the lower end of the base pipe 10, and the lower adapter 15 is fixedly connected with the, the outer wall of the lower adapter 15 is sleeved with a lower fixing ring 14, the fixing ring is connected with the lower adapter 15, the connection mode of the fixing ring and the lower adapter 15 is not limited, in this embodiment, preferably, the fixing ring and the lower adapter 15 are fixedly connected by welding, the lower end surface of the bypass pipe 11 is connected with the lower fixing ring 14, the connection mode of the lower end surface of the bypass pipe 11 and the lower fixing ring 14 is not limited, in this embodiment, preferably, the lower end surface of the bypass pipe 11 is fixedly connected with the lower fixing ring 14 by welding, the lower end of the lower adapter 15 is sleeved outside the lower adapter 19, the inner side of the lower end of the lower adapter 15 is provided with a fifth internal thread, the lower adapter 19 is fixedly connected with the fifth internal thread, the outer side of the lower adapter 19 is sleeved with a lower protection sleeve 18, and the lower end surface of the lower protection sleeve 18 is connected with the lower adapter 19, the connection mode of the lower end face of the lower protection sleeve 18 and the lower joint 19 is not limited, in this embodiment, preferably, the lower end face of the lower protection sleeve 18 is fixedly connected with the lower joint 19 through welding, the upper end face of the lower protection sleeve 18 is connected with the lower fixing ring 14, and the connection mode of the upper end face of the lower protection sleeve 18 and the lower fixing ring 14 is not limited.
The inner side of the lower end of the lower joint 19 is provided with a six-thread inner thread matched with the first external thread arranged on the upper joint 2, the lower joint 19 can be connected with the upper joint 2 through the matching of the six-thread inner thread and the first external thread, and the inner wall of the lower end of the lower adapter 15 is abutted against the outer wall of the other set of sealing insertion pipe 3 of the erosion-resistant filling bypass screen pipe for field opening.
The inner wall of the upper connector 2 and the outer wall of the sealing insertion pipe 3 are provided with a first overflowing channel 20, the lower end of the guide pipe 4 is provided with more than one second overflowing channel 21, the inside of each of the plurality of bypass pipes 11 is provided with a third overflowing channel 22, two bypass pipes 11 in the plurality of bypass pipes 11 are provided with more than one filling channel 23, the base pipe 10 is spirally distributed with a plurality of liquid flow channels 24, the upper end of the lower connector 19 is provided with a fourth overflowing channel 25, the specific form of the outer protective sleeve 13 is not limited, and in the embodiment, the outer protective sleeve 13 is preferably of a stamping type structure.
The oil field exploitation adopts the application that the erosion-resistant filling bypass sieve tube is arranged in a multistage serial connection mode, and a plurality of the oil field exploitation adopts the erosion-resistant filling bypass sieve tubes which are mutually connected in series for use.
The working principle of the embodiment is as follows: the erosion-resistant filling bypass sieve tube used for oil field exploitation is matched with a filling tool for filling and sand prevention, multiple stages of sand are connected in series and then are put into a designed well depth, pumped mortar enters a first overflowing channel 20 between the inner wall of an upper joint 2 and the outer wall of a sealing insertion tube 3, enters a second overflowing channel 21 at the lower end of a guide tube 4 and then enters a third overflowing channel 22 arranged inside a bypass tube 11, part of the mortar enters a stratum through filling channels 23 arranged on two bypass tubes 11 of the bypass tube 11 and is filtered by a composite filter layer 12, liquid returns to the ground through a liquid flow channel 24 arranged on a base tube 10, and the other part of the mortar enters a fourth overflowing channel arranged at the upper end of a lower joint 19 after passing through the third overflowing channel 22 arranged inside the bypass tube 11 and then enters the next set of erosion-resistant filling bypass sieve tube used for oil field exploitation until the series oil field exploitation is filled with the erosion-resistant filling.
Example 2
In order to further enhance the stability of the connection between the parts of the erosion-resistant packing bypass screen for oil field exploitation, the embodiment is improved on the basis of the embodiment 1, and the improvement is that: be provided with sealing washer 6 between 4 lower extreme inner walls of honeycomb duct and the 8 outer walls of last conversion joint, be provided with sealing washer two 7 between 3 lower extreme outer walls of sealed intubate and the last conversion joint inner wall, be provided with sealing washer three 16 between 15 inner walls of lower conversion joint and the 19 upper end outer walls of lower clutch, 3 outer walls of sealed intubate upper ends are provided with two sealing washers four 1, the concrete form of sealing washer one 6, sealing washer two 7, sealing washer three 16 and sealing washer four 1 is not restricted, in this embodiment, preferably, sealing washer one 6, sealing washer two 7, sealing washer three 16 and sealing washer four 1 are O type rubber circle, and through setting up sealing washer one 6, sealing washer two 7, sealing washer three 16 and sealing washer four 1, the steadiness of connecting between each part of this oil field of further reinforcing this oil field is opened and is adopted resistant erosion to fill the bypass screen pipe.
The working principle of the embodiment is as follows: be provided with sealing washer 6 between 4 lower extreme inner walls of honeycomb duct and the 8 outer walls of last conversion joint, be provided with sealing washer two 7 between 3 lower extreme outer walls of sealed intubate and the last conversion joint inner wall, be provided with sealing washer three 16 between 15 inner walls of lower conversion joint and the 19 upper end outer walls of lower clutch, 3 outer walls of sealed intubate upper ends are provided with two sealing washers four 1, and through setting up sealing washer one 6, sealing washer two 7, sealing washer three 16 and sealing washer four 1, this oil field of further reinforcing is opened and is adopted resistant erosion to fill the steadiness of being connected between each part of bypass screen pipe.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. The utility model provides an oil field is opened and is adopted resistant erosion and fill bypass screen pipe, its characterized in that, includes top connection (2), the upper end outside of top connection (2) is provided with external screw thread one, the lower extreme inboard of top connection (2) is provided with internal thread one, the pot head is established in the outside of honeycomb duct (4) under top connection (2), honeycomb duct (4) lower extreme inner wall is provided with internal thread two, the pot head of honeycomb duct (4) is established in the outside of last crossover sub (8), the upper end inboard of going up crossover sub (8) is provided with internal thread three, go up crossover sub (8) pot head and establish in the sealed intubate (3) outside, go up crossover sub (8) lower extreme inboard and be provided with internal thread four, go up crossover sub-tube cover and establish the outside of basic tube (10) under crossover sub (8), the outside cover of honeycomb duct (4) is equipped with upper, an upper fixing ring (9) is sleeved on the outer wall of the upper adapter (8), the lower end face of the upper protecting sleeve (5) is fixedly connected with the upper fixing ring (9), an outer protecting sleeve (13) is arranged at the lower end of the upper fixing ring (9), the upper end face of the outer protecting sleeve (13) is fixedly connected with the upper fixing ring (9), a composite filtering layer (12) is sleeved on the outer side of the base pipe (10), the upper end face and the lower end face of the composite filtering layer (12) are fixedly connected with the base pipe (10), a plurality of bypass pipes (11) are arranged on the outer side of the composite filtering layer (12), the outer walls of the plurality of bypass pipes (11) are connected with the outer protecting sleeve (13), an external thread II is arranged on the outer wall of the lower end of the base pipe (10), a lower adapter (15) is sleeved outside the lower end of the base pipe (10), the lower end face of the bypass pipe (11) is connected with a lower fixing ring (14), the lower end of the lower adapter (15) is sleeved with a lower protective sleeve (18), the lower end face of the lower protective sleeve (18) is connected with the lower adapter (19), the lower end face of the lower protective sleeve (18) is fixedly connected with the lower adapter (19) through welding, the upper end face of the lower protective sleeve (18) is connected with the lower fixing ring (14), and the inner side of the lower end of the lower adapter (19) is provided with an internal thread six matched with an external thread arranged on the upper adapter (2).
2. The oilfield washout-resistant filling bypass screen pipe according to claim 1, wherein the upper protective sleeve (5) is fixedly connected with the flow guide pipe (4) by welding, the upper fixing ring (9) is fixedly connected with the upper conversion joint (8) by welding, the lower end face of the upper protective sleeve (5) is fixedly connected with the upper fixing ring (9) by welding, the upper end face of the outer protective sleeve (13) is fixedly connected with the upper fixing ring (9) by welding, the upper and lower end faces of the composite filter layer (12) are fixedly connected with the base pipe (10) by welding, the outer wall of the bypass pipe (11) is fixedly connected with the outer protective sleeve (13) by welding, the upper end face of the bypass pipe (11) is fixedly connected with the upper fixing ring (9) by welding, the fixing ring is fixedly connected with the lower conversion joint (15) by welding, and the lower end face of the bypass pipe (11) is fixedly connected with the lower fixing ring (14) by welding, the upper end surface of the lower protective sleeve (18) is fixedly connected with the lower fixing ring (14) through welding.
3. The oilfield development erosion-resistant packing bypass screen according to claim 1, wherein the composite filter layer (12) is composed of an inner protective sleeve (1205), an inner diffuser screen (1204), an inner filter screen (1203), a support screen (1202) and an outer filter screen (1201) in sequence from inside to outside.
4. The oilfield development erosion-resistant packing bypass screen according to claim 2, wherein the number of the bypass pipes (11) is five.
5. The erosion-resistant filling bypass screen pipe for the oilfield exploitation according to claim 1, wherein a first overflowing channel (20) is arranged between the inner wall of the upper joint (2) and the outer wall of the sealing insertion pipe (3), more than one second overflowing channel (21) is arranged at the lower end of the diversion pipe (4), a third overflowing channel (22) is arranged inside each of the plurality of bypass pipes (11), more than one filling channel (23) is arranged on two bypass pipes (11) in the plurality of bypass pipes (11), a plurality of liquid flow channels (24) are spirally distributed on the base pipe (10), and a fourth overflowing channel (25) is arranged at the upper end of the lower joint (19).
6. The oilfield development erosion-resistant packing bypass screen according to claim 5, wherein the outer protective sleeve (13) is of a stamped-type construction.
7. The oil field exploitation erosion-resistant filling bypass screen pipe according to claim 1, wherein a first sealing ring (6) is arranged between the inner wall of the lower end of the flow guide pipe (4) and the outer wall of the upper adapter (8), a second sealing ring (7) is arranged between the outer wall of the lower end of the sealing insertion pipe (3) and the inner wall of the upper adapter, a third sealing ring (16) is arranged between the inner wall of the lower adapter (15) and the outer wall of the upper end of the lower adapter (19), and two fourth sealing rings (1) are arranged at the upper end of the outer wall of the sealing insertion pipe (3).
8. The oilfield exploitation of erosion-resistant packing bypass screen pipe according to claim 7, wherein the first seal ring (6), the second seal ring (7), the third seal ring (16) and the fourth seal ring (1) are all O-shaped rubber rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921757172.8U CN210622774U (en) | 2019-10-19 | 2019-10-19 | Erosion-resistant filling bypass sieve tube for oilfield exploitation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921757172.8U CN210622774U (en) | 2019-10-19 | 2019-10-19 | Erosion-resistant filling bypass sieve tube for oilfield exploitation |
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| CN210622774U true CN210622774U (en) | 2020-05-26 |
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| CN201921757172.8U Active CN210622774U (en) | 2019-10-19 | 2019-10-19 | Erosion-resistant filling bypass sieve tube for oilfield exploitation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110593825A (en) * | 2019-10-19 | 2019-12-20 | 海塔石油科技有限公司 | Erosion-resistant filling bypass sieve tube for oilfield exploitation |
| CN113756761A (en) * | 2021-10-19 | 2021-12-07 | 孙非 | But prefilter formula screen pipe |
-
2019
- 2019-10-19 CN CN201921757172.8U patent/CN210622774U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110593825A (en) * | 2019-10-19 | 2019-12-20 | 海塔石油科技有限公司 | Erosion-resistant filling bypass sieve tube for oilfield exploitation |
| CN113756761A (en) * | 2021-10-19 | 2021-12-07 | 孙非 | But prefilter formula screen pipe |
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