CN210483671U - Multi-runner bypass sieve tube - Google Patents
Multi-runner bypass sieve tube Download PDFInfo
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- CN210483671U CN210483671U CN201921387868.6U CN201921387868U CN210483671U CN 210483671 U CN210483671 U CN 210483671U CN 201921387868 U CN201921387868 U CN 201921387868U CN 210483671 U CN210483671 U CN 210483671U
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Abstract
The utility model relates to the technical field of sand prevention tools for oil field shafts, in particular to a multi-runner bypass sieve tube; the screen pipe includes the screen pipe body, outer protective sheath and bypass pipe, there is the cavity between outer protective sheath and the screen pipe body, the bypass pipe sets up in this cavity, the gravel thick liquid also flows in this cavity, the bypass pipe of setting in the cavity includes bypass transport pipe and bypass filling pipe, both ends all are in uncovered state about bypass transport pipe and the bypass filling pipe, the nozzle that passes outer protective sheath is seted up to the bypass filling pipe outer wall, when there is the sand bridge in the pit shaft annular space, the gravel thick liquid can flow into bypass transport pipe and bypass filling pipe under the effect of pressure, then fill the annular space of pit shaft from the nozzle on the bypass filling pipe in, accomplish sand control operation, improve sand control effect.
Description
Technical Field
The utility model relates to an oil field pit shaft sand control instrument technical field particularly, relates to multithread way bypass screen pipe.
Background
The main function of the petroleum screen pipe is sand control, and different geological environments of oil wells lead to different steel grades and types of the adopted screen pipes. In the oil drilling and production operation, the sieve tube is an important apparatus, and the prior well completion or oil extraction sand prevention is often adopted. The gravel packing sand control process using conventional screens is a natural settling process where gravel is removed from the sand-laden fluid.
However, for gravel packing of a longer packed well section or a horizontal well section, early gravel bridge phenomena, stratum collapse, irregular local well holes, blockage caused by clay expansion of a mudstone section and the like are easy to occur, a local annular barrier is formed in a space in a shaft, so that part of the well section cannot be filled with gravel, uniform and stable gravel packing cannot be formed, the sand control effect is greatly influenced, and even sand control failure is caused.
Therefore, it is an important technical problem to be solved by those skilled in the art to provide a multi-flow-channel bypass screen pipe with better sand control effect.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a multithread way bypass screen pipe to alleviate the poor technical problem of sand control effect among the prior art.
The utility model provides a multi-runner bypass sieve tube, which comprises a sieve tube body, an outer protective sleeve and a bypass tube arranged between the sieve tube body and the outer protective sleeve;
the outer wall of the sieve tube body and the outer wall of the outer protective sleeve are both provided with through holes;
the bypass pipe comprises a bypass conveying pipe and a bypass filling pipe, the upper end and the lower end of the bypass conveying pipe and the upper end and the lower end of the bypass filling pipe are both in an open state, and a nozzle penetrating through the outer protective sleeve is arranged on the outer wall of the bypass filling pipe.
Further, a cavity is formed between the screen pipe body and the outer protective sleeve, and the bypass pipe is arranged in the cavity through a support.
Furthermore, the support is annular, and the support is provided with a mounting hole for the bypass pipe to pass through.
Further, the sieve tube body comprises a base sieve tube, a joint, a bypass short section and a central insertion tube;
the base body sieve tube, the joint, the bypass short section and the central insertion tube are in threaded connection.
Further, the joint comprises an upper joint, a lower joint and an intermediate joint;
the lower joint and the middle joint are respectively connected to two ends of the base body sieve tube, and the upper joint is connected with the middle joint through the bypass short joint.
Further, the bypass short section comprises an upper bypass short section and a lower bypass short section;
one end of the upper bypass short section is connected with the middle joint, and the other end of the upper bypass short section is connected with the upper joint;
and the lower bypass short section is connected with the lower joint.
Further, when two screen pipe bodies are connected through the central insertion pipe, one end of the central insertion pipe is connected with the lower connector, and the other end of the central insertion pipe is connected with the middle connector.
Further, the outer protective sleeve is connected with the bypass short section, a bypass hole is formed in the outer wall of the bypass short section, and the bypass hole is located inside the outer protective sleeve.
Furthermore, the outer wall of the base body sieve tube is sleeved with a sand prevention layer.
Has the advantages that:
the utility model provides a pair of multithread way bypass screen pipe, including the screen pipe body, outer protective sheath and the bypass pipe of setting between screen pipe body and outer protective sheath, outer protective sheath is established in the screen pipe body outside, and there is the cavity between the two, the bypass pipe sets up in this cavity, the gravel thick liquid that is used for the sand control simultaneously also flows in this cavity, wherein screen pipe body outer wall and outer protective sheath outer wall have all seted up the through-hole, when carrying out the sand control operation, the gravel thick liquid can't be through the through-hole of seting up at screen pipe body outer wall, but can flow to the pit shaft annular space through the through-hole that sets up at outer protective sheath outer wall, when exploitation, oil can be exploited through the through-hole of seting up at screen pipe body; the well bore annular space content easily forms the sand bridge when filling the operation, the sand bridge of formation can influence and seriously influence sand control effect, it has silt to cause to mix in the oil of exploitation, influence the oil, consequently, set up the bypass pipe in the cavity, the bypass pipe of setting in the cavity includes bypass transport pipe and bypass filling tube, both ends all are in uncovered state about bypass transport pipe and the bypass filling tube, bypass filling tube outer wall is seted up the nozzle that passes outer protective sheath, when filling the main entrance in there is the sand bridge, the gravel thick liquid can flow into bypass transport pipe and bypass filling tube under the effect of pressure, then fill the sand control annular space of well bore in from the nozzle on the bypass filling tube, accomplish sand control operation, improve sand control effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of an overall structure of a multi-flow-passage bypass screen pipe according to an embodiment of the present invention;
FIG. 2 is a front view of a multi-flow-channel by-pass screen according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 4 is a partial enlarged view of B in FIG. 1;
FIG. 5 is an enlarged view of a portion C of FIG. 1;
fig. 6 is a partial enlarged view of D in fig. 1.
Icon: 100-screen body; 101-base screen pipe; 1021-upper joint; 1022-lower linker; 1023-middle joint; 1031-upper bypass short section; 1032-lower bypass nipple; 1033-a bypass orifice; 104-a central cannula; 200-an outer protective sheath; 201-a through hole; 202-a cavity; 203-a scaffold; 300-a bypass pipe; 301-a nozzle; 302-bypass transport pipe; 303-bypass filling pipe; 400-sand control layer.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present invention will be described in further detail below with reference to specific embodiments and with reference to the accompanying drawings.
Fig. 1 is a schematic view of an overall structure of a multi-flow-passage bypass screen pipe according to an embodiment of the present invention; FIG. 2 is a front view of a multi-flow-channel by-pass screen according to an embodiment of the present invention; FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1; FIG. 4 is a partial enlarged view of B in FIG. 1; FIG. 5 is an enlarged view of a portion C of FIG. 1; fig. 6 is a partial enlarged view of D in fig. 1.
As shown in fig. 1-6, a multi-flow-channel bypass screen pipe according to an embodiment of the present invention includes a screen pipe body 100, an outer protective sleeve 200, and a bypass pipe 300 disposed between the screen pipe body 100 and the outer protective sleeve 200; through holes 201 are formed in the outer wall of the sieve tube body 100 and the outer wall of the outer protective sleeve 200; the bypass pipe 300 comprises a bypass conveying pipe 302 and a bypass filling pipe 303, the upper end and the lower end of the bypass conveying pipe 302 and the upper end and the lower end of the bypass filling pipe 303 are both in an open state, and the outer wall of the bypass filling pipe 303 is provided with a nozzle 301 penetrating through the outer protective sleeve 200.
The embodiment of the utility model provides a multithread way bypass screen pipe, including screen pipe body 100, outer protective sheath 200 and the bypass pipe 300 of setting between screen pipe body 100 and outer protective sheath 200, outer protective sheath 200 cover is established in the screen pipe body 100 outside, and there is cavity 202 between the two, bypass pipe 300 sets up in this cavity 202, the gravel thick liquid that is used for the sand control simultaneously also flows in this cavity 202, wherein screen pipe body 100 outer wall and outer protective sheath 200 outer wall have all seted up through-hole 201, when carrying out sand control operation, gravel thick liquid can't be through seting up the through-hole 201 at screen pipe body 100 outer wall, but can flow to the pit shaft annulus through the through-hole 201 that sets up at outer protective sheath 200 outer wall, when exploitation, oil can be exploited through seting up the through-hole 201 at screen pipe body 100 outer wall and outer protective sheath 200 outer wall; when long flat section is filled, the shaft annular space content easily forms the sand bridge, the sand bridge that forms can influence and seriously influence sand control effect, it has silt to cause in the oil of exploitation, influence the oil, consequently, set up bypass pipe 300 in cavity 202, bypass pipe 300 that sets up in cavity 202 includes bypass transport pipe 302 and bypass filling pipe 303, both ends are all in open state about bypass transport pipe 302 and the bypass filling pipe 303, bypass filling pipe 303 outer wall is seted up and is passed outer protective sheath 200's nozzle 301, when there is the sand bridge in the shaft annular space, the gravel thick liquid can flow into bypass transport pipe 302 and bypass filling pipe 303 under the effect of pressure, then fill the annular space of shaft from nozzle 301 on bypass filling pipe 303 in, accomplish sand control operation, improve sand control effect.
Through holes 201 are formed in the outer wall of the sieve tube body 100 and the outer wall of the outer protective sleeve 200, and the through holes 201 formed in the outer wall of the outer protective sleeve 200 are used for gravel slurry to flow out for sand prevention; and the through-hole 201 of the outer wall of the screen body 100 is used for inflow of oil when oil is produced.
Be provided with bypass pipe 300 between screen pipe body 100 and the outer protective sheath 200, specific outer protective sheath 200 cover is established at screen pipe body 100 outer wall, and there is great cavity 202 between the two, for the circulation of gravel thick liquid, but gravel thick liquid can form the sand bridge because of various reasons in the pit shaft annular space, in case form the sand bridge, gravel thick liquid will unable continuation downflow, make the pit shaft annular space at the back unable sand control operation that obtains, for the influence that prevents the sand bridge, set up bypass pipe 300 in this cavity 202, the upper and lower both ends of bypass pipe 300 are close to the upper and lower both ends of screen pipe body 100, the influence of sand bridge to bypass pipe 300 can be avoided in the setting like this, can make the mortar from the top down flow simultaneously.
Specifically, the bypass pipe 300 comprises a bypass transport pipe 302 and a bypass filling pipe 303, wherein the bypass transport pipe 302 is specially responsible for transporting gravel slurry, so that the gravel slurry can rapidly descend; the nozzle 301 has been seted up to bypass filling pipe 303 outer wall, and nozzle 301 passes outer protective sheath 200, and bypass filling pipe 303 is under the effect that plays the transportation, and gravel thick liquid can flow to the pit shaft annular space from nozzle 301 simultaneously, plays good sand control effect.
Wherein, a plurality of nozzles 301 are opened on the outer wall of the bypass filling pipe 303, and the plurality of nozzles 301 are uniformly arranged.
In an alternative version of this embodiment, a cavity 202 is formed between the screen body 100 and the outer protective casing 200, and the by-pass conduit 300 is disposed within the cavity 202 by a holder 203.
A cavity 202 is formed between the screen body 100 and the outer protective sleeve 200, a by-pass pipe 300 is disposed in the cavity 202, and to prevent the by-pass pipe 300 from loosening, a holder 203 is disposed in the cavity 202, and the by-pass pipe 300 is disposed on the holder 203.
The cross section of the bypass pipe 300 is waist-shaped, so that the flow space of gravel slurry is increased, the efficiency is improved, and the blocking probability is reduced.
In an alternative embodiment, the holder 203 has an annular shape, and the holder 203 has a mounting hole for passing the bypass pipe 300 therethrough.
Specifically, the bracket 203 is circular, the bracket 203 is fixedly connected to the outer wall of the screen body 100, and the bypass pipe 300 is arranged on the bracket 203.
The bracket 203 is provided with a plurality of mounting holes having the same shape as the cross-sectional shape of the bypass pipe 300.
In an alternative of this embodiment, the screen body 100 includes a base screen 101, a joint, a bypass sub, and a center spigot 104; the base screen 101, the nipple, the bypass sub and the central cannulation 104 are threaded.
The screen pipe body 100 comprises a base screen pipe 101, a joint, a bypass short joint and a central insertion pipe 104, and the functions of the screen pipe body 100 and the connection of a plurality of screen pipe bodies 100 are completed through the cooperation of the base screen pipe 101, the joint, the bypass short joint and the central insertion pipe 104.
In an alternative of this embodiment, the joints include an upper joint 1021, a lower joint 1022, and an intermediate joint 1023; lower joint 1022 and middle joint 1023 are connected to the two ends of base screen 101, respectively, and upper joint 1021 is connected to middle joint 1023 through a bypass short joint.
Wherein connect including top connection 1021, lower clutch 1022 and middle clutch 1023, the upper end of base member screen pipe 101 is provided with middle clutch 1023, and the lower extreme of base member screen pipe 101 is provided with lower clutch 1022, and top connection 1021 is connected with middle clutch 1023 through the bypass nipple, all is provided with the screw thread moreover on top connection 1021, lower clutch 1022 and the middle clutch 1023 three.
The upper joint 1021, the lower joint 1022 and the middle joint 1023 can be connected with other equipment through the arranged threads.
In an alternative of this embodiment, the bypass sub comprises an upper bypass sub 1031 and a lower bypass sub 1032; one end of an upper bypass short section 1031 is connected with the middle joint 1023, and the other end is connected with an upper joint 1021; lower bypass sub 1032 is connected to lower connector 1022.
The bypass sub comprises an upper bypass sub 1031 and a lower bypass sub 1032, the upper bypass sub 1031 connects the middle joint 1023 and the upper joint 1021, the lower bypass sub 1032 connects with the lower joint 1022, and the two screen body 100 can be connected together through the lower bypass sub 1032.
In an alternative embodiment, when two screen bodies 100 are connected by a center insert pipe 104, the center insert pipe 104 is connected to a lower joint 1022 at one end and to an intermediate joint 1023 at the other end.
When two screen bodies 100 are connected, one end of the central insert pipe 104 is connected with the lower joint 1022, the other end is inserted into the middle joint 1023, and then the lower bypass sub 1032 is connected with the upper joint 1021, so that the connection of the two screen bodies 100 is completed.
In the alternative of this embodiment, outer protective sheath 200 is connected with the bypass nipple joint, and bypass hole 1033 has been seted up to bypass nipple joint outer wall, and bypass hole 1033 is located inside outer protective sheath 200.
When setting up outer protective sheath 200, outer protective sheath 200 can be connected on last bypass nipple 1031 and bypass nipple 1032 outer wall down, and bypass hole 1033 has been seted up to bypass nipple outer wall simultaneously, and the position of bypass hole 1033 is located the inside of outer protective sheath 200.
Meanwhile, a gap is formed between the central insertion tube 104 and the upper bypass sub 1031, and a gap is also formed between the central insertion tube 104 and the lower bypass sub 1032.
Specifically, when gravel slurry flows, gravel slurry in one screen body 100 can flow into the bypass pipe 300 through a gap formed between the central insertion pipe 104 and the bypass short section to form a channel.
In an alternative to this embodiment, the outer wall of base screen 101 is lined with sand control layer 400.
In order to improve the quality of the produced petroleum, the sand prevention layer 400 is sleeved on the outer wall of the base body sieve tube 101, so that the content of silt in the petroleum can be effectively reduced.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (9)
1. A multi-flow-channel bypass screen, comprising: the screen pipe comprises a screen pipe body, an outer protective sleeve and a by-pass pipe arranged between the screen pipe body and the outer protective sleeve;
the outer wall of the sieve tube body and the outer wall of the outer protective sleeve are both provided with through holes;
the bypass pipe comprises a bypass conveying pipe and a bypass filling pipe, the upper end and the lower end of the bypass conveying pipe and the upper end and the lower end of the bypass filling pipe are both in an open state, and a nozzle penetrating through the outer protective sleeve is arranged on the outer wall of the bypass filling pipe.
2. The multi-flow bypass screen according to claim 1, wherein a cavity is formed between the screen body and the outer protective sleeve, and the bypass pipe is disposed within the cavity by a holder.
3. The multi-flow passage bypass screen according to claim 2, wherein the support is annular and has a mounting hole for the bypass pipe to pass through.
4. The multi-flow passage bypass screen according to claim 1, wherein the screen body comprises a base screen, a nipple, a bypass sub, and a center spigot;
the base body sieve tube, the joint, the bypass short section and the central insertion tube are in threaded connection.
5. The multi-flow passage bypass screen according to claim 4, wherein the joints comprise an upper joint, a lower joint and an intermediate joint;
the lower joint and the middle joint are respectively connected to two ends of the base body sieve tube, and the upper joint is connected with the middle joint through the bypass short joint.
6. The multi-flow passage bypass screen according to claim 5, wherein the bypass sub comprises an upper bypass sub and a lower bypass sub;
one end of the upper bypass short section is connected with the middle joint, and the other end of the upper bypass short section is connected with the upper joint;
and the lower bypass short section is connected with the lower joint.
7. The multi-flow passage bypass screen according to claim 6, wherein when the screen bodies are connected by the center insert pipe, one end of the center insert pipe is connected to the lower joint and the other end is connected to the middle joint.
8. The multi-flow-channel bypass screen pipe according to claim 3, wherein the outer protective sleeve is connected to the bypass sub, and a bypass hole is formed in the outer wall of the bypass sub and located inside the outer protective sleeve.
9. The multi-flow passage bypass screen according to claim 4, wherein the outer wall of the base screen is coated with a sand control layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921387868.6U CN210483671U (en) | 2019-08-20 | 2019-08-20 | Multi-runner bypass sieve tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921387868.6U CN210483671U (en) | 2019-08-20 | 2019-08-20 | Multi-runner bypass sieve tube |
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| Publication Number | Publication Date |
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| CN210483671U true CN210483671U (en) | 2020-05-08 |
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| CN201921387868.6U Active CN210483671U (en) | 2019-08-20 | 2019-08-20 | Multi-runner bypass sieve tube |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112377156A (en) * | 2020-12-04 | 2021-02-19 | 中国石油大学(北京) | Pre-filled sand control screen pipe and processing method thereof |
-
2019
- 2019-08-20 CN CN201921387868.6U patent/CN210483671U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112377156A (en) * | 2020-12-04 | 2021-02-19 | 中国石油大学(北京) | Pre-filled sand control screen pipe and processing method thereof |
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