CN211819343U - Switchable sieve tube - Google Patents

Abstract

The utility model discloses a but switch screen pipe relates to oil gas production facility technical field, has reached the purpose that can open or close the production passageway according to the demand. The utility model discloses a main technical scheme does: the method comprises the following steps: the oil pipe is provided with a production channel, and a valve port is formed on the pipe wall of the oil pipe; the filtering layer is sleeved on the outer surface of the oil pipe, a circulation gap is formed between the filtering layer and the outer surface of the oil pipe, and a sealed conveying channel is formed between the circulation gap and the valve port; the sliding sleeve, the sliding sleeve sets up in oil pipe's inner wall, sliding sleeve and oil pipe inner wall sliding connection are provided with joint portion on the sliding sleeve, be provided with the first butt joint portion and the second butt joint portion that set gradually along oil pipe length direction on the oil pipe inner wall, first butt joint portion and second butt joint portion all be used for with joint portion joint, when joint portion and first butt joint portion joint, the sliding sleeve seals in the valve port, when joint portion and second butt joint portion joint, the valve port is opened to the sliding sleeve.

Description

Switchable sieve tube

Technical Field

The utility model relates to an oil gas production facility technical field especially relates to a but switch screen pipe.

Background

The sand control screen pipe is widely applied to construction operation of oil wells, gas wells and water mirrors in oil and gas fields, a construction pipe column is required to be connected with a sand control screen pipe tool during construction, and liquid and gas enter a production channel after being filtered by the sand control screen pipe. However, with the development of the technology in the oil industry, the sand control tools in the category can not solve the problems faced by the oil and gas industry at present. For an oil field, the output of formation water is increased, the output of oil is reduced, and under the condition of high water content, the cost is increased by oil-water treatment in the later period, the formation water of the oil well suddenly enters, and a certain layer position cannot be closed by a conventional sand control screen pipe according to production or operation requirements to prevent the formation water from entering an oil production channel, so that how to close the sand control screen pipe is a technical problem to be solved urgently by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a switchable screen, which is mainly used to close a production passage as required.

The embodiment of the utility model provides a but switch screen pipe, this switch screen pipe includes: the oil pipe is provided with a production channel, and a valve port is formed on the pipe wall of the oil pipe;

the filtering layer is sleeved on the outer surface of the oil pipe, a circulation gap is formed between the filtering layer and the outer surface of the oil pipe, and a sealed conveying channel is formed between the circulation gap and the valve port;

the sliding sleeve is arranged on the inner wall of the oil pipe and is in sliding connection with the inner wall of the oil pipe, a clamping portion is arranged on the sliding sleeve, a first butt joint portion and a second butt joint portion which are sequentially arranged along the length direction of the oil pipe are arranged on the inner wall of the oil pipe, the first butt joint portion and the second butt joint portion are both used for being clamped with the clamping portion, when the clamping portion is clamped with the first butt joint portion, the sliding sleeve is sealed on the valve port, and when the clamping portion is clamped with the second butt joint portion, the valve port is opened by the sliding sleeve.

The purpose of the utility model and the technical problem thereof can be further realized by adopting the following technical measures.

Specifically, the joint portion is one of an elastic protrusion or a joint groove, and the first butt joint portion and the second butt joint portion are both the elastic protrusion or the other of the joint grooves.

Specifically, still including the deformation groove, the deformation groove includes interconnect's tank bottom and cell wall, elastic bulge set up in the tank bottom, elastic bulge with be formed with the deformation space between the cell wall, elastic bulge with the deformation groove set up jointly in the outer wall of sliding sleeve or the inner wall of oil pipe.

Specifically, be formed with on the surface of sliding sleeve around the holding tank of sliding sleeve a week, be formed with the sealing member in the holding tank.

Specifically, the inner surface of the sliding sleeve is provided with a clamping table.

Specifically, the method further comprises the following steps: a transition joint and an outer shell body,

the oil pipe comprises a first communicating pipe and a second communicating pipe, the filtering layer is sleeved on the outer surface of the second communicating pipe, the sliding sleeve is sleeved in the first communicating pipe,

the transition joint comprises a first section and a second section, the first section is detachably sleeved on the outer surface of the first communicating pipe, the second section is detachably sleeved on the outer surface of the end part of the second communicating pipe,

a circulation groove arranged along the length direction of the first section is formed on the outer surface of the first section, a first through hole arranged along the length direction of the second section is formed on the pipe wall of the second section, and the first through hole is communicated with the circulation groove; one side of the first through hole, which is deviated from the circulation groove, is communicated with the circulation gap;

the first communication pipe comprises a third section and a fourth section, the outer diameter of the third section is smaller than that of the fourth section, the valve port is located in the third section, one end of the outer shell is sleeved on the outer surface of the third section and extends to the outer surface of the fourth section, the outer surface of the third section and the inner wall of the outer shell form a first conveying channel, the other end of the outer shell is sleeved on the outer surface of the first section and extends to the second section and is in sealing connection with the second section, the inner surface of the outer shell and the circulation groove form a second conveying channel, and the first conveying channel and the second conveying channel are communicated with each other to form the conveying channel.

Specifically, be formed with the buffer segment between the first section with the second section, the buffer segment is formed with and winds the buffer groove of buffer segment a week, the buffer groove include lateral wall and diapire and by the lateral wall with the buffer space that the diapire encloses, first through-hole extends to the lateral wall, the circulation recess communicate in buffer space.

In particular, the device also comprises a tracer pipe,

the oil pipe further comprises a third communicating pipe, the tracer pipe is sleeved on the outer surface of the third communicating pipe, an accommodating space is formed along the length direction of the tracer pipe, one end of the accommodating space is communicated with the circulation gap, the other end of the accommodating space is communicated with the first through hole, and tracer is accommodated in the accommodating space;

the third communicating pipe comprises a first connecting end and a second connecting end, the second section of the transition joint is detachably sleeved on the outer surface of the first connecting end, the second connecting end is detachably sleeved on the outer surface of the end of the second communicating pipe, the second connecting end of the third communicating pipe is sleeved on the first connecting end of the other third communicating pipe, and one end, close to the circulation gap, of the accommodating space is communicated with one end, close to the first through hole, of the other accommodating space.

Specifically, the tracer tube includes inner skleeve and outer sleeve, the inner skleeve includes relative first end and second end, the outer sleeve includes relative third end and fourth end, first end with the third end is connected, and is formed with first slot opening, the second end with the fourth end is connected, and is formed with the second slot opening, the inner skleeve with be formed with between the outer sleeve accommodation space, first slot opening with the second slot opening all with accommodation space is linked together, first slot opening communicate in flow gap, the second slot opening communicate in first through-hole.

Specifically, the filter layer includes a support ring, a transition ring and a filter sleeve, the support ring and the transition ring are respectively disposed at two ends of the filter sleeve, the support ring and the transition ring are sleeved on the outer surface of the second communicating pipe, and the support value of the filter sleeve is preset to a height to form a circulation gap, the transition ring is provided with a third channel, and the third channel is communicated with the first slit opening.

The embodiment of the utility model provides a but switch screen pipe, sliding sleeve set up at oil pipe's inner wall, and it can slide along oil pipe's inner wall, and when the joint portion of sliding sleeve and first butt joint portion joint, the valve port can be closed to the sliding sleeve, and when the sliding sleeve slided to second butt joint portion, the valve port was opened to joint portion and second butt joint portion joint, sliding sleeve. The effect of opening or closing the valve port can be realized through the sliding sleeve, if meeting the construction requirement or under the condition that the oil gas output is greatly reduced because the penetrating fluid of the layer enters suddenly (mainly water and gas) to generate the toe end effect, the product can close the production channel of the layer through a switch tool, and can open the production channel of the layer again according to the actual requirement.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.

Drawings

Fig. 1 is a schematic structural view of a switchable screen according to an embodiment of the present invention;

fig. 2 is another schematic structural diagram of a switchable screen according to an embodiment of the present invention;

fig. 3 is a schematic view of another switchable screen according to an embodiment of the present invention;

fig. 4 is a schematic view of a sliding sleeve structure of a switchable screen according to an embodiment of the present invention;

fig. 5 is a schematic view of another switchable screen according to an embodiment of the present invention;

fig. 6 is another schematic structural view of a switchable screen according to an embodiment of the present invention;

fig. 7 is a schematic view of a transition joint structure of a switchable screen according to an embodiment of the present invention;

fig. 8 is a schematic view of a third communication pipe structure of a switchable screen pipe according to an embodiment of the present invention;

fig. 9 is a schematic view of a first end ring structure of a switchable screen according to an embodiment of the present invention;

fig. 10 is a schematic view of a second end ring structure of a switchable screen according to an embodiment of the present invention;

fig. 11 is a schematic view of a transition ring structure of a switchable screen according to an embodiment of the present invention.

The reference numbers illustrate:

1-oil pipe, 11-valve port, 12-first butt joint part, 13-second butt joint part, 14-clamping groove, 15-first communicating pipe, 16-second communicating pipe, 161-connecting part, 162-functional part, 17-third communicating pipe, 171-first connecting end, 172-second connecting end, 1721-second through hole, 173-transition zone, 2-filter layer, 21-support ring, 22-transition ring, 221-third channel, 23-filter sleeve, 24-flow gap, 3-sliding sleeve, 31-elastic bulge, 32-deformation groove, 33-holding groove, 34-sealing element, 35-clamping table, 4-transition joint, 41-first section, 411-flow groove, 42-second section, 421-first through hole, 43-buffer section, 431-buffer groove, 5-outer shell, 6-trace tube, 61-inner sleeve, 62-outer sleeve, 63-first end ring, 631-first slotted opening, 64-second end ring, 641-second slotted opening, 7-valve core, 8-upper joint.

Detailed Description

To further illustrate the technical means and effects of the present invention for achieving the intended purpose of the present invention, the following detailed description of the switchable screen pipe according to the present invention will be given with reference to the accompanying drawings and preferred embodiments.

As shown in fig. 1 to 11, the present invention provides a switchable screen, which includes: the oil pipe 1, the oil pipe 1 forms the production channel, there are valve ports 11 on the pipe wall of the oil pipe 1; the filter layer 2 is sleeved on the outer surface of the oil pipe 1, a flow gap 24 is formed between the filter layer 2 and the outer surface of the oil pipe 1, and a sealed conveying channel is formed between the flow gap 24 and the valve port 11; sliding sleeve 3, sliding sleeve 3 sets up in oil pipe 1's inner wall, sliding sleeve 3 and 1 inner wall sliding connection of oil pipe, be provided with joint portion on the sliding sleeve 3, be provided with first butt joint portion 12 and the second butt joint portion 13 that set gradually along 1 length direction of oil pipe on the 1 inner wall of oil pipe, first butt joint portion 12 all is used for with joint portion joint with second butt joint portion 13, when joint portion and 12 joints of first butt joint portion, sliding sleeve 3 seals in valve port 11, when joint portion and 13 joints of second butt joint portion, sliding sleeve 3 opens valve port 11. The embodiment can be used for sand control and water control construction operation of an oil field, and the bottom section of the shaft pipe column is stringed. The filter layer 2 plays a role in filtering formation sand, fluid enters the circulation gap 24 after passing through the filter layer 2 and then reaches the valve port 11 through the conveying channel, when the valve port 11 is opened, the fluid enters the production channel in the oil pipe 1, and when the valve port 11 is closed, the fluid cannot enter the production channel in the oil pipe 1. Wherein the valve port 11 can communicate the conveying channel with the production channel. The outer surface of sliding sleeve 3 is established to oil pipe 1 cover, sliding sleeve 3 can slide along oil pipe 1's internal surface, be provided with joint portion on sliding sleeve 3's internal surface, be provided with first butt joint portion 12 and second butt joint portion 13 on oil pipe 1's the inner wall, when sliding sleeve 3 is located the primary importance, sliding sleeve 3's joint portion and first butt joint portion 12 joint, as shown in fig. 2, sliding sleeve 3 can be sealed the valve port 11 completely and close this moment, cause valve port 11 no longer to feed liquor, when sliding sleeve 3 slides to the secondary importance, as shown in fig. 3, sliding sleeve 3's joint portion and second butt joint portion joint, sliding sleeve 3 can't shelter from valve port 11, make valve port 11 open, the fluid continues to enter into the production passageway from valve port 11. The effect of opening or closing the valve port 11 can be realized through the sliding sleeve 3, if meeting the construction requirement or the situation that the oil gas output is greatly reduced because the penetrating fluid of the production zone enters suddenly (mainly water and gas) to generate the toe end effect, the product can close the production channel of the production zone through a switch tool, and can open the production channel of the production zone again according to the actual requirement.

Specifically, the clamping portion is one of the elastic protrusion 31 or the clamping groove 14, and the first docking portion 12 and the second docking portion 13 are the other one of the elastic protrusion 31 or the clamping groove 14. The first butt joint part 12 is the same as the second butt joint part 13, the first butt joint part 12 and the second butt joint part 13 are collectively called as a butt joint part, when the first butt joint part 12 and the second butt joint part 13 are elastic protrusions 31, that is, the elastic protrusions 31 are arranged on the inner wall of the oil pipe 1, and the clamping part is a clamping groove 14, that is, the clamping groove 14 is arranged on the outer wall of the sliding sleeve 3, the elastic protrusions 31 can be clamped in the clamping groove 14, when the sliding sleeve 3 slides along the inner wall of the oil pipe 1, when the sliding sleeve 3 moves from the first position to the second position, firstly, an external force along a first direction is applied to the sliding sleeve 3, so that the sliding sleeve 3 moves along the first direction, wherein the first direction points to the second position from the first position, the direction pointed by the arrow A is the first direction, after the external force is applied to the sliding sleeve 3, the elastic protrusions 31 are extruded to generate deformation pointing to the first direction, and when the deformation amount reaches a certain value, the elastic, the elastic protrusion 31 is separated from the clamping groove 14, the sliding sleeve 3 slides to the second position along the inner wall of the oil pipe 1, and the elastic protrusion 31 is clamped with the clamping groove 14 of the second butt joint part 13, so that the valve port 11 is in an open state. Another embodiment is: as shown in fig. 2 and 3, the joint portion is the elastic bulge 31, when the butt joint portion is the joint groove 14, the elastic bulge 31 is arranged on the outer wall of the sliding sleeve 3, when the sliding sleeve 3 moves from the first position to the second position, the sliding sleeve 3 receives the external force of the first direction, the elastic bulge 31 receives the extrusion force deviating from the first direction, when the deformation amount of the elastic bulge 31 reaches a certain value, the elastic bulge 31 cannot continue to limit the sliding sleeve 3, and the sliding sleeve 3 starts to slide to the second butt joint portion. Set the joint portion or the butt joint portion into an elastic component, can make things convenient for sliding sleeve 3 to slide.

Specifically, as shown in fig. 2 and 3, the oil pipe further includes a deformation groove 32, the deformation groove 32 includes a groove bottom and a groove wall that are connected to each other, the elastic protrusion 31 is disposed at the groove bottom, a deformation space is formed between the elastic protrusion 31 and the groove wall, and the elastic protrusion 31 and the deformation groove 32 are disposed together on an outer wall of the sliding sleeve 3 or an inner wall of the oil pipe 1. When the elastic protrusion 31 is disposed on the outer wall of the sliding sleeve 3, the deformation groove 32 is also disposed on the outer wall of the sliding sleeve 3. When the elastic protrusion 31 is disposed on the inner wall of the oil pipe 1, the deformation groove 32 is also disposed on the inner wall of the oil pipe 1, and both are disposed on the same component. The deformation groove 32 is recessed in the surface of the component on which it is formed, and when the elastic projection 31 is deformed, the end of the elastic projection 31 remote from the groove bottom moves toward the deformation space. The sliding sleeve 3 moves along the inner wall of the oil pipe 1, so when the position of the oil pipe 1 changes, the pressure applied to the elastic protrusion 31 also follows the length direction of the oil pipe 1, and when the elastic protrusion 31 deforms, the deformation also follows the length direction of the oil pipe 1, or the deformation of the elastic protrusion 31 along the length direction is the largest. Therefore, the deformation groove 32 can be formed in a strip shape, the length direction of the deformation groove is the same as the length direction of the oil pipe 1, the elastic protrusion 31 is arranged in the central area of the groove bottom of the deformation groove 32, and in addition, deformation spaces can be formed between the groove walls around the groove bottom and the elastic protrusion 31.

Wherein, as shown in fig. 4, the quantity of joint portion is a plurality of, and evenly sets up around 3 a week of sliding sleeve for each elastic bulge 31 atress is even, and the quantity of the first butt joint portion 12 that corresponds is a plurality of, and the quantity of second butt joint portion 13 also is a plurality of, and the two all sets up around a week of oil pipe 1 inner wall, perhaps first butt joint portion 12 all around 3 outer walls of sliding sleeve a week with second butt joint portion 13.

Specifically, as shown in fig. 4, a receiving groove 33 is formed on the outer surface of the sliding sleeve 3 around the sliding sleeve 3, and a seal 34 is formed in the receiving groove 33. Holding tank 33 is around sliding sleeve 3 a week, and the quantity of holding tank 33 can be a plurality of, and a plurality of holding tanks 33 set up along sliding sleeve 3's length direction, perhaps holding tank 33 spiral encircles in sliding sleeve 3's outer wall. Wherein a sealing element 34 is formed in the receiving groove 33, so that the outer surface of the sliding sleeve 3 is connected with the inner surface of the oil pipe 1 in a sealing way, and fluid is prevented from entering the production channel along the gap between the sliding sleeve 3 and the oil pipe 1 when the valve is closed. Wherein, sealing member 34 can be the vulcanite circle, through vulcanite circle and oil pipe 1 sealing connection, wherein vulcanite circle vulcanizes in holding tank 33. And the holding tank 33 reduces along the direction cross sectional area who deviates from 3 axis of sliding sleeve gradually, and holding tank 33 is the shape of tightening up gradually promptly, avoids when the vulcanite circle, and the vulcanite circle leaks outward for be connected between sealing member 34 and the holding tank 33 is more reliable.

Specifically, as shown in fig. 2, 3 and 4, the inner surface of the sliding sleeve 3 is formed with a catching table 35. Need with the help of external force when removing sliding sleeve 3, in the staff transfers the sliding sleeve 3 with the instrument from the pipeline, when the instrument card was on joint platform 35, the staff exerted oneself and stimulates or promote sliding sleeve 3 for sliding sleeve 3 moves along oil pipe 1's internal surface. Specifically, can form a recess at the internal surface of sliding sleeve, the recess all can be for joint platform 35 along the relative both ends of sliding sleeve length direction, when promoting or pulling the sliding sleeve for the joint platform 35 of instrument joint in different positions.

Specifically, as shown in fig. 1, 5, 6, and 7, the method further includes: the oil pipe 1 comprises a first communicating pipe 15 and a second communicating pipe 16, the outer surface of the second communicating pipe 16 is sleeved with the filter layer 2, the sliding sleeve 3 is sleeved in the first communicating pipe 15, the transition joint 4 comprises a first section 41 and a second section 42, the outer surface of the first communicating pipe 15 is sleeved with the first section 41, the outer surface of the end part of the second communicating pipe 16 is detachably sleeved with the second section 42, as shown in fig. 7, a circulation groove 411 arranged along the length direction of the outer surface of the first section 41 is formed, a first through hole 421 arranged along the length direction of the pipe wall of the second section 42 is formed, and the first through hole 421 is communicated with the circulation groove 411; as shown in fig. 6, a side of the first through hole 421 facing away from the flow groove 411 communicates with the flow gap 24; the first communicating pipe 15 includes three sections 151 and a fourth section 152, the valve port 11 is located in the third section 151, one end of the outer shell 5 is sleeved on the outer surface of the third section 151 and extends to the outer surface of the fourth section 152, the outer surface of the third section 151 and the inner wall of the outer shell 5 form a first conveying channel, the other end of the outer shell 5 is sleeved on the outer surface of the first section 41 and extends to the second section 42 and is hermetically connected with the second section 42, the inner surface of the outer shell 5 and the circulation groove 411 form a second conveying channel, and the first conveying channel and the second conveying channel are communicated with each other to form a conveying channel.

Wherein, the transition joint 4 is used for connecting the first communicating pipe 15 and the second communicating pipe 16, the first section 41 is connected with the outer surface of the first communicating pipe 15 by screw thread, the second section 42 is connected with the outer surface of the second communicating pipe 16 by screw thread, the second communicating pipe 16 comprises a connecting part 161 and a function part 162, the outer surface of the connecting part 161 is provided with screw thread, the cross-sectional area of the outer surface of the function part 162 is gradually reduced along the direction of the second communicating pipe 16 to the first communicating pipe 15, the filter layer 2 is arranged on the outer surface of the function part 162, the first through hole 421 positioned on the second section 42 is arranged opposite to the circulation gap 24, the fluid enters the first through hole 421 after passing through the circulation gap 24, and flows into the flow groove 411 from the first through hole 421, a second delivery channel is formed between the flow groove 411 and the outer shell 5, and the fluid is delivered to the first delivery channel and then enters the valve port 11. Wherein, outer shell 5 and second section 42 pass through sealing washer sealing connection. And the outer shell 5 is also connected with the outer surface of the first communicating pipe 15 in a sealing way through a sealing ring. As shown in fig. 6, the valve port 11 is in the coverage area of the outer casing 5, the first section 41 does not extend to the valve port 11, the first section 41 is set to extend to the third position of the first communication pipe 15, the outer casing 5 extends to the fourth position of the first communication pipe 15, the valve port 11 is located between the third position and the fourth position, the third position is located at the third section 151, the fourth position is located at the fourth section 152, the third section 151 is adjacent to the second communication pipe, the area between the third position and the fourth position of the first communication pipe 15 is covered by the outer casing 5, the outer diameter of the third section 151 is smaller than the outer diameter of the fourth section 152, a gap is formed between the inner surface of the outer casing 5 and the third section 151, and a first conveying channel is formed. The first through holes 421 are disposed along the circumferential direction of the second section 42 and surround the first section 41. The number of the circulation grooves 411 is plural, the plural circulation grooves 411 are formed around the first section 41, and the circulation grooves 411 may be rectangular grooves. The first section 41 is connected with the first communication pipe 15 in a sealing way through a sealing ring.

Specifically, as shown in fig. 5 to 7, a buffer section 43 is formed between the first section 41 and the second section 42, the buffer section 43 is formed with a buffer groove 431 surrounding the buffer section 43, the buffer groove 431 includes a side wall and a bottom wall and a buffer space surrounded by the side wall and the bottom wall, the first through hole 421 extends to the side wall, and the groove is communicated with the buffer space. The bottom wall of the buffer groove 431 is lower than the position of the first through hole 421, so that the fluid can enter the buffer groove 431, and the fluid can enter the circulation groove 411 after passing through the buffer groove 431. The depth of the buffer groove 431 is larger than that of the flow grooves, and the buffer groove 431 can be arranged around the buffer section 43 to form an annular groove, so that the fluid can enter each flow groove uniformly after being buffered by the buffer groove 431. The outer case 5 covers the buffer groove 431 to form a buffer space with the buffer groove 431.

Specifically, as shown in fig. 5, the oil pipe 1 further includes a tracer pipe 6, the oil pipe 1 further includes a third communicating pipe 17, the tracer pipe 6 is sleeved on an outer surface of the third communicating pipe 17, an accommodating space is formed along a length direction of the tracer pipe 6, one end of the accommodating space is communicated with the circulation gap 24, the other end of the accommodating space is communicated with the first through hole 421, and a tracer is accommodated in the accommodating space; the third communicating pipe 17 includes a first connecting end 171 and a second connecting end 172, the second section 42 of the transition joint 4 is detachably sleeved on the outer surface of the first connecting end 171, the second connecting end 172 is detachably sleeved on the outer surface of the end of the second communicating pipe 16, the second connecting end 172 of the third communicating pipe 17 is sleeved on the first connecting end 171 of another third communicating pipe 17, and one end of the accommodating space close to the circulation gap 24 is used for communicating with one end of another accommodating space close to the first through hole 421. The tracer pipe 6 is internally provided with a tracer, after fluid enters the accommodating space from the circulation gap 24, water, oil and gas contact with the tracer, the tracer releases respective unique compounds, the formation fluid carries the tracer compounds to the ground, and whether the oil production section is uniform or not can be judged through detection and analysis; and the water outlet position and the water outlet time of the stratum and the contribution rate of oil, water and gas of the corresponding stratum can be judged. Therefore, reservoir data of oil, water and gas wells are obtained, and effective data support is provided for improvement of later-stage drilling and well completion schemes. The outer surface of the first connection end 171 of the third communication pipe 17 is provided with threads, and is in threaded connection with the second section 42, the inner surface of the second connection end 172 is provided with threads, and is in threaded connection with the outer surface of the second connection end 172, the third communication pipe 17 and the tracer pipe 6 installed on the third communication pipe 17 are detachably connected with the first communication pipe 15 and the second communication pipe 16, and whether the third communication pipe 17 and the tracer pipe 6 are installed can be determined according to the characteristics of an oil layer. Meanwhile, the second connection end 172 of the third communication pipe 17 can be detachably sleeved on the first connection end 171 of the other third communication pipe 17, and meanwhile, one end of the accommodating space close to the circulation gap 24 can be communicated with one end of the accommodating space of the other tracer pipe 6 close to the first through hole 421, so that any two third communication pipes 17 can be combined together, and the number of the tracer pipes 6 and the number of the third communication pipes 17 can be increased according to requirements.

Specifically, as shown in fig. 5, the tracer tube 6 includes an inner sleeve 61 and an outer sleeve 62, the inner sleeve 61 includes a first end and a second end opposite to each other, the outer sleeve 62 includes a third end and a fourth end opposite to each other, the first end is connected to the third end and is formed with a first slit opening 631, the second end is connected to the fourth end and is formed with a second slit opening 641, a receiving space is formed between the inner sleeve 61 and the outer sleeve 62, the first slit opening 631 and the second slit opening 641 are both communicated with the receiving space, the first slit opening 631 is communicated with the flow gap, and the second slit opening 641 is communicated with the first through hole 421.

The first end and the third end can be connected by a first end ring 63, the first slit opening 631 is formed on the first end ring 63, the first slit opening 631 gradually decreases in a second direction, the second direction is from the second end to the first end, the second end and the fourth end are connected by a second end ring 64, the second slit opening 641 is formed on the second end ring 64, and the second slit opening 641 gradually decreases in a direction away from the second direction. Or both the first slotted opening 631 and the second slotted opening 641 are smaller than the cross-sectional area of the receiving space, so as to prevent the tracer from flowing out of the receiving space. Further, as shown in fig. 9 and 10, the first slit opening 631 and the second slit opening 641 may further include a plurality of sub openings, the sub openings are disposed along the circumferential direction of the first end ring 63 and the second end ring 64, and the opening area of the sub openings is small, so that the tracer may be disposed in a granular form, a stripe form, a block form, and the like, which is not limited herein. The inner sleeve 61 is sleeved on the outer surface of the third communication pipe 17, the inner sleeve 61, the outer sleeve 62, the first end ring 63 and the second end ring 64 are welded, the inner surface of the first end ring 63 is hermetically connected with the outer surface of the third communication pipe 17, and a sealing ring may be arranged between the first end ring 63 and the third communication pipe 17.

In addition, as shown in fig. 8, a transition area 173 is disposed between the first connecting end 171 and the second connecting end 172, the trace tube 6 is disposed on an outer surface of the transition area 173, a step surface is formed between the transition area 173 and the second connecting end 172, that is, a cross-sectional area of the outer surface of the second connecting end 172 is larger than a cross-sectional area of the outer surface of the transition area 173, the first end ring 63 is disposed opposite to the step surface, a second through hole 1721 may be disposed on the second connecting end 172, the second through hole 1721 is disposed opposite to the flow gap 24 and is communicated with the flow gap 24, the fluid enters the second through hole 1721 through the flow gap 24, the first slit opening 631 enters the accommodating space, the second slit opening 641 enters the first through hole 421, the flow groove 411, and the fluid finally enters the production channel through the valve port 11.

Specifically, as shown in fig. 1, 5, and 6, the filter layer 2 includes a support ring 21, a transition ring 22, and a filter sleeve 23, the support ring 21 and the transition ring 22 are respectively disposed at two ends of the filter sleeve 23, the support ring 21 and the transition ring 22 are sleeved on an outer surface of the second communication pipe 16, and a support value of the filter sleeve 23 is preset to a predetermined height to form a circulation gap 24, the transition ring 22 is disposed at one end of the filter sleeve 23 close to the tracer pipe 6, the transition ring 22 is provided with a third channel 221, and the third channel 221 is communicated with the first slit opening 631. The filter sleeve 23 can be a slotted screen, a composite screen, a pre-packed screen, etc. which can be installed by adjusting the size of the support ring 21 and the transition ring 22 when different screens are used. The filter sleeve 23 may be fixedly connected to the support ring 21 and the transition ring by welding, and the transition ring 22 and the support ring 21 may be fixedly connected to the outer surface of the second communication pipe 16 by welding. As shown in fig. 11, the third channel 221 may be a groove disposed on the inner wall of the transition ring 22, the groove being disposed along the thickness direction of the transition ring 22, or the third channel 221 is a through hole, and the number of the third channels 221 is multiple and bypasses the transition ring 22 for a circle.

Specifically, the valve further comprises a valve core 7, and the valve core 7 is arranged on the valve port 11. The valve element 7 is used to control the flow rate and quantity of the fluid. Still include top connection 8, top connection 8 detachable connects in the one end that deviates from filter layer 2 of oil pipe 1, and top connection 8 is used for the connecting tube cluster.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. An openable screen, comprising:

the oil pipe is provided with a production channel, and a valve port is formed on the pipe wall of the oil pipe;

the filtering layer is sleeved on the outer surface of the oil pipe, a circulation gap is formed between the filtering layer and the outer surface of the oil pipe, and a sealed conveying channel is formed between the circulation gap and the valve port;

the sliding sleeve is arranged on the inner wall of the oil pipe and is in sliding connection with the inner wall of the oil pipe, a clamping portion is arranged on the sliding sleeve, a first butt joint portion and a second butt joint portion which are sequentially arranged along the length direction of the oil pipe are arranged on the inner wall of the oil pipe, the first butt joint portion and the second butt joint portion are both used for being clamped with the clamping portion, when the clamping portion is clamped with the first butt joint portion, the sliding sleeve is sealed on the valve port, and when the clamping portion is clamped with the second butt joint portion, the valve port is opened by the sliding sleeve.

2. The switchable screen of claim 1,

the clamping portion is one of an elastic protrusion or a clamping groove, and the first butt joint portion and the second butt joint portion are both the elastic protrusion or the other clamping groove.

3. The switchable screen of claim 2,

still include the deformation groove, the deformation groove includes interconnect's tank bottom and cell wall, elastic bulge set up in the tank bottom, elastic bulge with be formed with the deformation space between the cell wall, elastic bulge with the deformation groove set up jointly in the outer wall of sliding sleeve or oil pipe's inner wall.

4. The switchable screen of claim 1,

the outer surface of the sliding sleeve is provided with a containing groove which surrounds the sliding sleeve for a circle, and a sealing element is formed in the containing groove.

5. The switchable screen of claim 4,

the inner surface of the sliding sleeve is provided with a clamping table.

6. The switchable screen of claim 1,

further comprising: a transition joint and an outer shell body,

the oil pipe comprises a first communicating pipe and a second communicating pipe, the filtering layer is sleeved on the outer surface of the second communicating pipe, the sliding sleeve is sleeved in the first communicating pipe,

the transition joint comprises a first section and a second section, the first section is sleeved on the outer surface of the first communicating pipe, the second section is detachably sleeved on the outer surface of the end part of the second communicating pipe,

a circulation groove arranged along the length direction of the first section is formed on the outer surface of the first section, a first through hole arranged along the length direction of the second section is formed on the pipe wall of the second section, and the first through hole is communicated with the circulation groove; one side of the first through hole, which is deviated from the circulation groove, is communicated with the circulation gap;

the first communication pipe comprises a third section and a fourth section, the outer diameter of the third section is smaller than that of the fourth section, the valve port is located in the third section, one end of the outer shell is sleeved on the outer surface of the third section and extends to the outer surface of the fourth section, the outer surface of the third section and the inner wall of the outer shell form a first conveying channel, the other end of the outer shell is sleeved on the outer surface of the first section and extends to the second section and is in sealing connection with the second section, the inner surface of the outer shell and the circulation groove form a second conveying channel, and the first conveying channel and the second conveying channel are communicated with each other to form the conveying channel.

7. The switchable screen of claim 6,

first section with be formed with the buffer segment between the second section, the buffer segment is formed with around the buffer groove of buffer segment a week, the buffer groove include lateral wall and diapire and by the lateral wall with the buffer space that the diapire encloses, first through-hole extends to the lateral wall, the recess communicate in buffer space.

8. The switchable screen of claim 7,

also comprises a tracing pipe which is provided with a plurality of holes,

the oil pipe further comprises a third communicating pipe, the tracer pipe is sleeved on the outer surface of the third communicating pipe, an accommodating space is formed along the length direction of the tracer pipe, one end of the accommodating space is communicated with the circulation gap, the other end of the accommodating space is communicated with the first through hole, and tracer is accommodated in the accommodating space;

the third communicating pipe comprises a first connecting end and a second connecting end, the second section of the transition joint is detachably sleeved on the outer surface of the first connecting end, the second connecting end is detachably sleeved on the outer surface of the end of the second communicating pipe, the second connecting end of the third communicating pipe is sleeved on the first connecting end of the other third communicating pipe, and one end, close to the circulation gap, of the accommodating space is communicated with one end, close to the first through hole, of the other accommodating space.

9. The switchable screen of claim 8,

the tracer pipe includes inner skleeve and outer sleeve, the inner skleeve includes relative first end and second end, the outer sleeve includes relative third end and fourth end, first end with the third end is connected, and is formed with first slot opening, the second end with the fourth end is connected, and is formed with the second slot opening, the inner skleeve with be formed with between the outer sleeve accommodating space, first slot opening with the second slot opening all with accommodating space is linked together, first slot opening communicate in the circulation clearance, the second slot opening communicate in first through-hole.

10. The switchable screen of claim 9,

the filter layer comprises a support ring, a transition ring and a filter sleeve, the support ring and the transition ring are respectively arranged at two ends of the filter sleeve, the support ring and the transition ring are sleeved on the outer surface of the second communicating pipe in a sleeving manner, the support value of the filter sleeve is preset to a height to form a circulation gap, the transition ring is arranged at one end, close to the tracing pipe, of the filter sleeve, a third channel is arranged on the transition ring, and the third channel is communicated with the first slit opening.

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