CN217602637U - High-strength composite sand filtering pipe - Google Patents
High-strength composite sand filtering pipe Download PDFInfo
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- CN217602637U CN217602637U CN202221866654.9U CN202221866654U CN217602637U CN 217602637 U CN217602637 U CN 217602637U CN 202221866654 U CN202221866654 U CN 202221866654U CN 217602637 U CN217602637 U CN 217602637U
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- center tube
- filter screen
- circular arc
- arc board
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Abstract
The utility model relates to an oil field technical field just discloses compound sand screen of high strength, including the center tube, the cut groove has been seted up on the center tube surface, center tube fixed surface installs the filter screen. According to the high-strength composite sand filtering pipe, pressure difference is generated between the inside and the outside of the central pipe, so that the central pipe generates bending moment to extrude a filter screen, the stiffening ribs transmit pressure to the metal protective sleeve, the shearing resistance and the bending resistance of the central pipe are increased, the stability of the central pipe is enhanced, and the filter screen is prevented from being damaged; the inner diameter of the filtering hole of the resin sleeve is adjusted through temperature control processing, so that the resin sleeve is suitable for various environments, and rough filtering is performed before filtering of the filter screen, so that the filter screen is prevented from being blocked and damaged; the circular arc board rotates the circular arc board after inserting the slot, makes the circular arc board slide into the ripple groove, and the circular arc board produces the friction with the ripple groove and makes two center tubes splice, and the pin rod inserts the through-hole and contacts with the circular arc board to the center tube of fixed concatenation makes the sand screen possess the function adaptation different environments of length.
Description
Technical Field
The utility model relates to an oil field technical field specifically is compound sand screen of high strength.
Background
The sandstone reservoir in China is wide in distribution and rich in reserves, but due to special reservoir properties, sand is easy to generate in the development process, so that the problem of development of loose sandstone reservoirs needs to be solved urgently, and in order to prevent the sand generation from causing harm to the exploitation and production of oil and gas wells, a lower sand prevention pipe mode is mainly adopted at home and abroad for mechanical sand prevention;
however, the existing sand filtering pipe cannot solve the problem that the filter screen is damaged when in use due to large internal and external pressure difference of the filter screen, so that the filter screen cannot play a role of blocking sand, stratum sand can enter the casing to cause sand burying of the casing, and an oil well cannot normally produce, particularly in a horizontal well, if the sand burying of the casing causes long-term production halt and maintenance of the oil well, the economic cost can be increased, and the oil field benefit can be reduced; and the prior sand filtering pipe can not be spliced so as not to be suitable for different environments.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high strength composite sand screen to solve the problem that provides in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the high-strength composite sand filtering pipe comprises a central pipe, wherein a cutting groove is formed in the surface of the central pipe, a filter screen is fixedly mounted on the surface of the central pipe, a metal protective sleeve is fixedly mounted on the surface of the filter screen, the inner wall of the metal protective sleeve is fixedly connected with the surface of the central pipe, a stiffening rib is fixedly mounted on the inner wall of the metal protective sleeve, the bottom of the stiffening rib penetrates through the filter screen, the bottom of the stiffening rib is fixedly connected with the surface of the central pipe, a drainage hole is formed in the inner wall of the metal protective sleeve in a penetrating manner, a resin sleeve is fixedly mounted on the surface of the metal protective sleeve, and a filtering hole is formed in the inner wall of the resin sleeve in a penetrating manner;
the outer wall of one side of the central tube is fixedly provided with an arc plate, the outer wall of the other side of the central tube is provided with a slot, the inner wall of the slot is in surface sliding connection with the arc plate, the inner wall of the slot is provided with a corrugated groove, the inner wall of the corrugated groove is in surface sliding connection with the arc plate, the surface of the central tube is provided with a through hole in a penetrating mode, the inner wall of the through hole is in pin joint with a pin rod, and the surface of the pin rod is in surface contact with the arc plate.
Preferably, the stiffening rib is equipped with three groups, every group is four, and three stiffening ribs of group are at center tube surface axial evenly distributed, and every stiffening rib evenly distributed is at the front of center tube outer wall, the back, top and bottom, when the inside pressure of center tube is greater than the outside, the center tube inflation produces deformation and extrudees the filter screen, influence the filtering quality of filter screen, the stiffening rib is with center tube to the pressure transmission to the metal protection cover of filter screen, the degree of control center tube deformation, and the center tube surface receives under the exogenic action, the center tube produces the moment of flexure, the stiffening rib of both sides shears, the stiffening rib bending resistance at middle part, the stability of center tube has been strengthened greatly.
Preferably, the resin sleeve is made of flexible resin materials, the aperture of the filter holes in the surface of the resin sleeve is adjusted through temperature processing, the filter holes can be filtered in both coarse sand and fine sand environments, and the sand filter pipe is suitable for various environments.
Preferably, the inner diameter of the filter hole is smaller than that of the drainage hole, so that the drainage hole is prevented from being blocked by sand passing through the filter hole after coarse filtration.
Preferably, the top and the bottom of the circular arc plate are corrugated, so that the surface of the circular arc plate and the inner wall of the corrugated groove generate friction, two central pipes are connected, the length of the sand filtering pipe is adjusted, and different working environments are adapted.
Preferably, the shape of the inner wall of the slot is smooth and flat, the inner diameter of the slot is equal to the thickness of the arc plate, the arc plate is inserted into the slot to reach the same arc surface of the arc plate and the corrugated groove, and the arc plate can slide into the corrugated groove conveniently.
Preferably, the shape of the inner wall of the corrugated groove is matched with the shape of the surface of the arc plate, so that the arc plate does not shake when sliding in the corrugated groove.
The utility model provides a compound sand screen of high strength, this compound sand screen of high strength possesses following beneficial effect:
(1) According to the high-strength composite sand filtering pipe, pressure difference is generated between the inside of the central pipe and the outside of the central pipe, so that the central pipe generates bending moment to extrude a filter screen, the stiffening ribs transmit pressure to the metal protective sleeve, the shearing resistance and the bending resistance of the central pipe are increased, the stability of the central pipe is enhanced, and the filter screen is prevented from being damaged; the resin sleeve adjusts the inner diameter of the filter hole through temperature control processing, so that the resin sleeve is suitable for various environments, prevents coarse sand from blocking the filter hole in a coarse sand environment, prevents the filter hole from being ineffective in a fine sand environment, enables the filter screen to bear all filtering work, and plays a role in rough filtering before the filter screen is filtered, thereby preventing the filter screen from being blocked and damaged.
(2) This compound sand screen of high strength, the circular arc board rotates the circular arc board after the slot is inserted to the circular arc board, makes the circular arc board slide into the ripple groove, and the circular arc board produces the friction with the ripple groove and makes two center tubes splice, thereby the pin rod insert the through-hole and contact with the circular arc board, thereby avoid the circular arc board to slide out the fixed circular arc board of ripple groove under the exogenic action to the center tube of fixed concatenation makes the sand screen possess the function of length regulation and adapts to different environment.
Drawings
FIG. 1 is a schematic front view of the structure of the present invention;
FIG. 2 is a schematic front sectional view of the structure of the present invention;
FIG. 3 is an enlarged schematic view of the structure of the present invention at the A position;
fig. 4 is a schematic side view of the corrugated trough of the present invention.
In the figure: the filter comprises a central tube 1, a cutting groove 2, a filter screen 3, a metal protective sleeve 4, a stiffening rib 5, a drainage hole 6, a resin sleeve 7, a filter hole 8, a circular arc plate 9, a slot 10, a corrugated groove 11, a through hole 12 and a pin rod 13.
Detailed Description
As shown in fig. 1-4, the utility model provides a technical solution: the high-strength composite sand filtering pipe comprises a central pipe 1, wherein a cutting groove 2 is formed in the surface of the central pipe 1, a filter screen 3 is fixedly arranged on the surface of the central pipe 1, a metal protective sleeve 4 is fixedly arranged on the surface of the filter screen 3, the inner wall of the metal protective sleeve 4 is fixedly connected with the surface of the central pipe 1, stiffening ribs 5 are fixedly arranged on the inner wall of the metal protective sleeve 4, three groups of four stiffening ribs 5 are arranged, the three groups of stiffening ribs 5 are axially and uniformly distributed on the surface of the central pipe 1, each stiffening rib 5 is uniformly distributed on the front surface, the back surface, the top and the bottom of the outer wall of the central pipe 1, the bottom of each stiffening rib 5 penetrates through the filter screen 3, the bottom of the stiffening rib 5 is fixedly connected with the surface of the central tube 1, the inner wall of the metal protective sleeve 4 is provided with a drainage hole 6 in a penetrating manner, the surface of the metal protective sleeve 4 is fixedly provided with a resin sleeve 7, the resin sleeve 7 is made of flexible resin materials, the inner wall of the resin sleeve 7 is provided with a filter hole 8 in a penetrating manner, the inner diameter of the filter hole 8 is smaller than the inner diameter of the drainage hole 6, pressure difference is generated between the inside of the central tube 1 and the outside of the central tube 1, the central tube 1 generates bending moment to extrude the filter screen 3, the stiffening rib 5 transmits the pressure to the metal protective sleeve 4, the shearing resistance and the bending resistance of the central tube 1 are increased, the stability of the central tube 1 is enhanced, and the filter screen is prevented from being damaged; the resin sleeve 7 adjusts the inner diameter of the filter holes 8 through temperature control processing, so that the filter is suitable for various environments, prevents coarse sand from blocking the filter holes 8 in a coarse sand environment, prevents the filter holes 8 in a fine sand environment from being ineffective to enable the filter screen 3 to bear all filtering work, and simultaneously plays a role in rough filtering before the filter screen 3 is filtered, thereby preventing the filter screen 3 from being blocked and damaged;
the outer wall fixed mounting of 1 one side of center tube has circular arc board 9, circular arc board 9 top and bottom shape are the corrugate, slot 10 has been seted up to 1 opposite side outer wall of center tube, slot 10 inner wall shape is smooth circular-arcly, and the internal diameter of slot 10 equals with the thickness of circular arc board 9, slot 10 inner wall and circular arc board 9 surface sliding connection, corrugated groove 11 has been seted up to slot 10 inner wall, corrugated groove 11 inner wall shape and circular arc board 9 surface shape looks adaptation, corrugated groove 11 inner wall and circular arc board 9 surface sliding connection, through-hole 12 has been seted up in the surface running through of center tube 1, through-hole 12 inner wall pin joint has pin 13, pin 13 surface and circular arc board 9 surface contact, circular arc board 9 rotates circular arc board 9 after inserting slot 10, make circular arc board 9 slide into corrugated groove 11, circular arc board 9 makes two center tubes 1 splice with corrugated groove 11 production friction, pin 13 inserts through-hole 12 and contacts with circular arc board 9, thereby avoid circular arc board 9 to slide out corrugated groove 11 under the exogenic action and fix the concatenation circular arc board 9, thereby fixed center tube 1 of fixed, thereby make the sand filter possess the function of adjusting length adapt to different environment.
When the high-strength composite sand filtering pipe is used, pressure difference is generated between the inside of the central pipe 1 and the outside of the central pipe 1, so that the central pipe 1 generates bending moment to extrude the filter screen 3, the stiffening ribs 5 transmit pressure to the metal protective sleeve 4, and the shearing resistance and the bending resistance of the central pipe 1 are increased, so that the stability of the central pipe 1 is enhanced; the inner diameter of the filtering hole 8 is adjusted by the resin sleeve 7 through temperature control processing, and rough filtering is carried out before filtering by the filter screen 3; the arc plate 9 is inserted into the slot 10 and then the arc plate 9 is rotated to enable the arc plate 9 to slide into the corrugated groove 11, the arc plate 9 and the corrugated groove 11 generate friction to enable the two central pipes 1 to be spliced, the pin rod 13 is inserted into the through hole 12 and contacts with the arc plate 9, and therefore the arc plate 9 is prevented from sliding out of the corrugated groove 11 under the action of external force to fix the arc plate 9, and the spliced central pipes 1 are fixed.
In conclusion, although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made herein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. Compound sand screen of high strength, including center tube (1), its characterized in that: the surface of the central tube (1) is provided with a cutting groove (2), the surface of the central tube (1) is fixedly provided with a filter screen (3), the surface of the filter screen (3) is fixedly provided with a metal protective sleeve (4), the inner wall of the metal protective sleeve (4) is fixedly connected with the surface of the central tube (1), the inner wall of the metal protective sleeve (4) is fixedly provided with a stiffening rib (5), the bottom of the stiffening rib (5) penetrates through the filter screen (3), the bottom of the stiffening rib (5) is fixedly connected with the surface of the central tube (1), the inner wall of the metal protective sleeve (4) is provided with a drainage hole (6) in a penetrating manner, the surface of the metal protective sleeve (4) is fixedly provided with a resin sleeve (7), and the inner wall of the resin sleeve (7) is provided with a filter hole (8) in a penetrating manner;
the utility model discloses a corrugated pipe, including center tube (1), slot (10) and arc board (9), corrugated groove (11) have been seted up to center tube (1) one side outer wall fixed mounting, center tube (1) opposite side outer wall has seted up slot (10), slot (10) inner wall and arc board (9) sliding surface connection, through-hole (12) have been seted up in center tube (1) surface running through, through-hole (12) inner wall pin joint has pin rod (13), pin rod (13) surface and arc board (9) surface contact.
2. The high strength composite sand screen of claim 1, wherein: stiffening rib (5) are equipped with three groups, and every group is four, and three stiffening rib (5) of group are at center tube (1) surface axial evenly distributed, and every stiffening rib (5) evenly distributed is at the front, the back, top and the bottom of center tube (1) outer wall.
3. The high-strength composite sand screen according to claim 1, wherein: the resin sleeve (7) is made of flexible resin materials.
4. The high strength composite sand screen of claim 1, wherein: the inner diameter of the filter hole (8) is smaller than that of the drainage hole (6).
5. The high-strength composite sand screen according to claim 1, wherein: the top and the bottom of the circular arc plate (9) are corrugated.
6. The high-strength composite sand screen according to claim 1, wherein: the inner wall of the slot (10) is smooth and flat arc-shaped, and the inner diameter of the slot (10) is equal to the thickness of the arc plate (9).
7. The high strength composite sand screen of claim 1, wherein: the shape of the inner wall of the corrugated groove (11) is matched with the shape of the surface of the circular arc plate (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221866654.9U CN217602637U (en) | 2022-07-20 | 2022-07-20 | High-strength composite sand filtering pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221866654.9U CN217602637U (en) | 2022-07-20 | 2022-07-20 | High-strength composite sand filtering pipe |
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| Publication Number | Publication Date |
|---|---|
| CN217602637U true CN217602637U (en) | 2022-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221866654.9U Active CN217602637U (en) | 2022-07-20 | 2022-07-20 | High-strength composite sand filtering pipe |
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| CN (1) | CN217602637U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115929262A (en) * | 2023-03-15 | 2023-04-07 | 东营百华石油技术开发有限公司 | Metal sand filtering pipe |
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2022
- 2022-07-20 CN CN202221866654.9U patent/CN217602637U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115929262A (en) * | 2023-03-15 | 2023-04-07 | 东营百华石油技术开发有限公司 | Metal sand filtering pipe |
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