CN209483229U - Completion string and production system - Google Patents
Completion string and production system Download PDFInfo
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- CN209483229U CN209483229U CN201821918473.XU CN201821918473U CN209483229U CN 209483229 U CN209483229 U CN 209483229U CN 201821918473 U CN201821918473 U CN 201821918473U CN 209483229 U CN209483229 U CN 209483229U
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 34
- 238000002627 tracheal intubation Methods 0.000 claims description 75
- 238000007789 sealing Methods 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 24
- 239000012530 fluid Substances 0.000 description 11
- 238000005553 drilling Methods 0.000 description 10
- 238000009434 installation Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 244000147058 Derris elliptica Species 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model provides a well completion tubular column and production system, this well completion tubular column includes: an open hole production string and a back-plugging string; the top end of the open hole production string is communicated with the bottom end of the back-plugging string; a first casing packer and a second casing packer are arranged on the open hole production string at intervals from the top end to the bottom end; a first ball seat is arranged on the open hole production string between the first casing packer and the second casing packer, a second ball seat is arranged on the open hole production string at the lower part of the second casing packer, and the sealing diameter of the first ball seat is larger than that of the second ball seat; two casing packers are arranged on the open hole production string at intervals, so that the sealing property between the open hole production string and the casing can be enhanced, and the defect of insufficient sealing property between the open hole production string and the casing caused by failure of one casing packer is avoided, so that the well completion operation risk is reduced.
Description
Technical field
The utility model relates to oil and gas exploitation equipment and technology more particularly to a kind of completion tubular column and production systems
System.
Background technique
In the recovery process of oil gas, need to carry out well completion operations after drilling out well casing and tripping in casing to underground, with maximum limit
The channel for linking up ground interlayer of degree, and then improve the yield of oil/gas well；Therefore which kind of completion equipment is used to guarantee the production of oil gas
Rate has become a hot topic of research.
In the prior art, well completion operations are often carried out by completion tubular column, completion tubular column includes from top to bottom being sequentially connected
Return intubation column and naked eye flow string, the top of naked eye flow string is provided with casing packer；First passing through drilling tool will be naked
Eye flow string is sent to the predeterminated position in oil/gas well；The casing packer on naked eye flow string is set later；It will return again
Intubation column is lowered into underground；To underground injection completion fluid to replace the aerial drilling fluid of fuel-displaced lantern ring；Intubation column will be returned later to connect
It connects on naked eye flow string top；Production tree finally is installed on the top of casing, to complete the well completion operations to oil/gas well.
However, being influenced during tripping in naked eye flow string operation by factors such as time, temperature, glue bucket quality, hold
Casing packer seal failure is easily caused, causes the leakproofness between naked eye flow string and casing insufficient, so that completion practice
Risk is high.
Utility model content
The utility model provides a kind of completion tubular column and production system, to solve in tripping in naked eye flow string operation
In the process, it is influenced by factors such as time, temperature, glue bucket quality, be easy to cause casing packer seal failure, naked eye is caused to produce
Leakproofness between tubing string and casing is insufficient, so that the technical problem that completion practice risk is high.
The utility model provides a kind of completion tubular column, comprising: naked eye flow string and time intubation column；The naked eye production
The top of tubing string is connected to the bottom end of described time intubation column；Being provided with from top to bottom end interval on the naked eye flow string
First sleeve packer and the second casing packer；Institute between the first sleeve packer and second casing packer
It states and is provided with the first ball seat on naked eye flow string, the naked eye of second casing packer and naked eye flow string bottom end
The second ball seat is provided on flow string.
Completion tubular column as described above, it is preferable that described between first ball seat and the first sleeve packer
Secondary plugging valve is provided on naked eye flow string, the secondary plugging valve is used to cooperate with soluble spool, will be described naked
Eye flow string closing.
Completion tubular column as described above, it is preferable that the bottom end of the naked eye flow string is provided with float valve.
Completion tubular column as described above, it is preferable that the naked eye flow string further includes being located at the float valve and described the
Ball-throwing type screen casing between two ball seats.
Completion tubular column as described above, it is preferable that the naked eye flow string further includes being arranged in the ball-throwing type screen casing
The open hole packer in outside.
Completion tubular column as described above, it is preferable that the open hole packer be it is multiple, multiple open hole packers are along institute
State the setting of the axially spaced-apart of naked eye flow string.
Completion tubular column as described above, it is preferable that be provided with telescoping tube on described time intubation column.
Completion tubular column as described above, it is preferable that the top of described time intubation column is provided with tubing hanger.
Completion tubular column as described above, it is preferable that be provided with underground on time intubation column described in the tubing hanger lower part
Safety valve.
The utility model also provides a kind of production system, comprising: production tree and completion tubular column as described above, it is described to adopt
Oil tree is arranged on the ground, and the production tree is connected to the top of the completion tubular column.
Completion tubular column provided by the utility model and production system, by by the top of naked eye flow string with return intubation
The bottom end of column is connected to, and is provided with first sleeve packer and the second casing envelope from top to bottom end interval on naked eye flow string
Every device；It is provided with the first ball seat on naked eye flow string between first sleeve packer and the second casing packer, second set
The second ball seat being provided on the naked eye flow string of pipe packer lower part；What is be spaced on naked eye flow string is provided with two sets
Pipe packer can reinforce the leakproofness between naked eye flow string and casing, avoid leading after failing because of a casing packer
Leakproofness between the naked eye flow string and casing of cause is insufficient, to reduce completion practice risk.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is
Some embodiments of the utility model, for those of ordinary skill in the art, without creative efforts,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is the scheme of installation of completion tubular column provided by the embodiment of the utility model；
Fig. 2 is the structural schematic diagram that intubation column is returned in Fig. 1；
Fig. 3 is the structural schematic diagram that the structural schematic diagram naked eye flow string of intubation column is returned in Fig. 1.
Description of symbols:
10, intubation column is returned；
20, naked eye flow string；
30, casing；
40, open hole packer；
101, telescoping tube；
102, tubing hanger；
103, storm valve；
201, the first pipeline section；
202, the second pipeline section；
203, the second casing packer；
204, first sleeve packer；
205, the first ball seat；
206, the second ball seat；
207, secondary plugging valve；
208, float valve；
209, ball-throwing type screen casing.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The range of the utility model protection.In the absence of conflict, the feature in following embodiment and embodiment can be mutual group
It closes.
Fig. 1 is the scheme of installation of completion tubular column provided by the embodiment of the utility model；Fig. 2 is that intubation column is returned in Fig. 1
Structural schematic diagram；Fig. 3 is the structural schematic diagram that the structural schematic diagram naked eye flow string of intubation column is returned in Fig. 1.
Please refer to Fig. 1-Fig. 3.The present embodiment provides a kind of completion tubular columns, comprising: naked eye flow string 20 and time intubation
Column 10；The top of naked eye flow string 20 is connected to the bottom end for returning intubation column 10；From top to bottom end on naked eye flow string 20
Interval is provided with first sleeve packer 204 and the second casing packer 203；First sleeve packer 204 and the second casing
The first ball seat 205, the second casing packer 203 and naked eye production are provided on naked eye flow string 20 between packer 203
The second ball seat 206 is provided on naked eye flow string 20 between 20 bottom end of tubing string.
Specifically, naked eye flow string 20 include perpendicular to horizontal plane setting the first pipeline section 201 and with the first pipeline section
201 are connected in the second pipeline section 202 for presetting angle, the top of the first pipeline section 201 with the bottom end for returning intubation column 10, the first pipeline section
201 bottom end is connected to the top of the second pipeline section 202, and first sleeve packer 204 and the second casing packer 203 are arranged at
On first pipeline section 201.
First pipeline section 201 and the second pipeline section 202 can be that metal tube or other high-strength corrosion-resisting materials are constituted
Pipe；It is removably connected between first pipeline section 201 and the second pipeline section 202, such as: it can be arranged in the bottom end of the first pipeline section 201
There is connection external screw thread, correspondingly, being provided with connection screw thread hole on the top of the second pipeline section 202, connects external screw thread and connection screw thread
Hole cooperation to realize the connection between the first pipeline section 201 and the second pipeline section 202, or is provided in the bottom end of the first pipeline section 201
Connection screw thread hole is provided with connection external screw thread on the top of second pipe accordingly.
Preferably, according to the different situations of underground, the reasonable size that default angle is set so that the second pipeline section 202 to
Underground extends and is connected to the oil reservoirs of underground, to come out the oil extraction in oil reservoirs.
Specifically, first sleeve packer 204 and the second casing packer 203 can be mechanical packer；Or
First sleeve packer 204 and the second casing packer 203 are hydraulic packer；Or first sleeve packer 204 is
Mechanical packer, the second casing packer 203 are hydraulic packer；Certainly, first sleeve packer 204 can be hydraulic
Formula packer, and the second casing packer 203 is mechanical packer.
Specifically, first sleeve packer 204 can be located at the top of the second pipeline section 202, and the second pipeline section 202 passes through at this time
First sleeve packer 204 connect with intubation column 10 is returned, i.e., the top of first sleeve packer 204 directly with time intubation column 10
Bottom end connection.
Preferably, the top of first sleeve packer 204 is dismountable by anchoring sealing and the bottom end of time intubation column 10
Connection, to facilitate back the installation and removal between intubation column 10 and first sleeve packer 204.
Specifically, it returns intubation column 10 to be arranged perpendicular to horizontal plane, returns intubation column 10 and extended from ground to underground, return intubation column
10 bottom end is connect with the top of naked eye flow string 20, and the top for returning intubation column 10 is connect with production tree, and naked eye is produced
In oil-gas transportation to production tree in tubing string 20, to realize the exploitation to oil gas.
Preferably, it returns intubation column 10 and is sequentially connected by multiple metal tubes and constitute, wherein on the direction perpendicular to horizontal plane
In two adjacent metal tubes, the bottom end of a upper metal tube is provided with external screw thread, and the top of next metal tube is provided with and outer spiral shell
The threaded hole of line cooperation, alternatively, be provided with threaded hole in the bottom end of a upper metal tube, the top of next metal tube be provided with
The external screw thread of threaded hole cooperation.
It specifically, can the first metal of tripping in opposite well on the ground during into well, intubation column 10 is returned in tripping in
Pipe, makes the bottom end of the second metal tube be connected to the top of the first metal tube, backward well in move back to and be intubated column 10, then by third
Metal tube is connected to the top of the second metal tube, to continue to move back to intubation column 10 into well；And so on, until returning intubation column
10 bottom end is connect with the top of naked eye flow string 20.
Specifically, between first sleeve packer 204 and the second casing packer 203 is arranged in the first ball seat 205
In one pipeline section 201, the pitching into the first ball seat 205 so that the first ball seat 205 is closed, and then is beaten into naked eye flow string 20
Pressure, so that the first sleeve packer 204 on 205 top of the first ball seat is set.In the same manner, the pitching into the second ball seat 206, so that
Second ball seat 206 is closed, and then is suppressed into naked eye flow string 20, so that second casing off on 206 top of the second ball seat
Device 203 is set.
Preferably, the first ball seat 205 and the second ball seat 206 can be E type ball seat or the first ball seat 205 and the second ball
Seat 206 is other kinds of ball seat.
Specifically, the use process of completion tubular column provided in this embodiment are as follows: pass through drilling rod first for naked eye flow string
20 are lowered into well casing, and are located at naked eye flow string 20 in oil reservoirs；Use direct circulation for liquid by second set later
The drilling fluid of 203 lower part of pipe packer is for out；Ball sealer is put into later, and ball sealer and the first ball seat 205 cooperate, by the first ball
The naked eye flow string 20 of 205 lower parts of seat is closed；Backward first ball seat, 205 top naked eye flow string 20 in suppress, with
Set first sleeve packer 204, i.e. first sleeve packer 204 is by the annular space between naked eye flow string 20 and casing 30
Closing；Backward second ball seat 206 in pitching, by the second sealed ball seat close；Continue at this time into naked eye flow string 20
It suppresses, so that the second casing packer 203 is set, so that the second casing packer 203 is by naked eye flow string 20 and casing 30
Between annular space closing；Finally into well tripping in return intubation column 10, by return intubation column 10 injected into casing 30 completion fluid with
By the drilling fluid in casing 30 for out, finally it is connected to the bottom end of intubation column 10 and the top of naked eye flow string 20, with complete
At the installation of flow string.
Completion tubular column provided in this embodiment, by connecting the top of naked eye flow string 20 with the bottom end for returning intubation column 10
It is logical, first sleeve packer 204 and the second casing packer are provided with from bottom end to top interval on naked eye flow string 20
203；The first ball seat is provided on naked eye flow string 20 between first sleeve packer 204 and the second casing packer 203
205, the second ball seat 206 being provided on the naked eye flow string 20 of 203 lower part of the second casing packer；Naked eye flow string 20
Upper interval is provided with two casing packers, can reinforce the leakproofness between naked eye flow string 20 and casing 30, avoid
Leakproofness caused by after failing because of a casing packer between naked eye flow string 20 and casing 30 is insufficient, to have reduced well
Operating risk.
Specifically, it is provided on the naked eye flow string 20 between the first ball seat 205 and first sleeve packer 204 secondary
Plugging valve 207, secondary plugging valve 207 are used to cooperate with soluble spool, naked eye flow string 20 are closed.When naked eye produces
When occurring leak source on tubing string 20 and lead to 20 self seal deficiency of naked eye flow string, it can be put into naked eye flow string 20
Soluble spool can close secondary plugging valve 207, when soluble spool is contacted with secondary plugging valve 207 temporarily to block
Naked eye flow string 20；In order to avoid influencing subsequent well completion operations because having leak source on naked eye flow string 20.
Preferably, soluble spool can be slowly dissolved by the formation fluid in naked eye flow string 20, or soluble
Spool can slowly be chemically reacted with the formation fluid in naked eye flow string 20；So that the volume of soluble spool by
Decrescence small, after well completion operations, the volume of soluble spool is reduced to can be solvable at this time by secondary plugging valve 207
Property spool by secondary plugging valve 207, to realize the unlatching of naked eye flow string 20.
It is possible to further which the material of soluble spool is reasonably arranged according to the time of well completion operations, so as in complete well
Soluble spool is just detached from secondary plugging valve 207 after operation.
Specifically, the bottom end of naked eye flow string 20 is provided with float valve 208.Float valve 208 is arranged in naked eye flow string 20
Bottom end, can prevent the equal bottom end of liquid and other impurities through naked eye flow string 20 outside naked eye flow string 20 into
Enter into naked eye flow string 20；Float valve 208 allows the liquid such as the drilling fluid in naked eye flow string 20 to produce through naked eye simultaneously
It flows out the bottom end of tubing string 20.
In other embodiments, when the float valve 208 of 20 bottom end of naked eye flow string fails, into naked eye flow string 20
Soluble spool is put into, to block naked eye flow string 20, generates the risks such as blowout after preventing float valve 208 from failing.
Specifically, naked eye flow string 20 further includes the ball-throwing type sieve between float valve 208 and second ball seat 206
Pipe 209.Ball-throwing type screen casing 209 can prevent the particulate matters such as large-sized grains of sand in oil reservoirs from entering naked eye flow string 20
It is interior, in case the particulate matters such as large-sized grains of sand influence the other equipment work in tubing string.
Ball-throwing type screen casing 209 includes tube body, and what is be spaced on the side wall of tube body offers multiple sieve pores, is needing to close pitching
When formula screen casing 209, multiple ball sealers only need to be put into naked eye flow string 20, so that ball sealer blocks sieve pore, realized
Ball-throwing type screen casing 209 is closed.
Specifically, naked eye flow string 20 further includes the open hole packer 40 that 209 outside of ball-throwing type screen casing is arranged in.Naked eye
Packer 40 can close the annular space between the naked eye flow string 20 and casing 30 in 209 outside of ball-throwing type screen casing.
Specifically, open hole packer 40 is multiple, the axially spaced-apart of multiple open hole packers 40 along ball-throwing type screen casing 209
Setting.To further increase the leakproofness between naked eye flow string 20 and casing 30.
Specifically, the axially spaced-apart of naked eye flow string 20 is provided with multiple ball-throwing type screen casings 209, and adjacent
Two ball-throwing type screen casings 209 between be provided with open hole packer 40.
Specifically, it returns on intubation column 10 and is provided with telescoping tube 101.Telescoping tube 101 can return intubation column 10 by axial direction
It deforms when power, in order to avoid the axial force that time intubation column 10 is subject to is excessive, intubation column 10 is caused back to damage.
Preferably, telescoping tube 101 can be bellows, and when returning 10 under tension of intubation column, elastic shape occurs for bellows
Become, bellows is extended to reduce back the pulling force that intubation column 10 is subject to；When bellows under tension reduces or is under pressure, wave
The elastic deformation that line pipe is shunk, in case it is excessive to return the pressure that intubation column 10 is subject to.
Telescoping tube 101 may include the first telescopic segment and the second telescopic segment in other embodiments, the first telescopic segment with stretch
The intubation column 10 that returns on 101 top of the draw connects, and the second telescopic segment is connect with the intubation column 10 that returns of 101 lower part of telescoping tube, and second stretches
Contracting section is threaded through in the first telescopic segment, and the second telescopic segment is telescopic to be connect with the first telescopic segment, and the first telescopic segment and the
It is tightly connected between two telescopic segments.When return 10 under tension of intubation column when, the second telescopic segment by being stretched out in the first telescopic segment, when return
When intubation column 10 is under pressure, the second telescopic segment is to the first telescopic segment contract, in case time 10 stress of intubation column is excessive and then sends out
Raw rupture.
Specifically, the top for returning intubation column 10 is provided with tubing hanger 102.The top for returning intubation column 10 passes through tubing hanger 102
It is connect with uphole equipment, to prevent oil and gas leakage.
Specifically, returning on intubation column 10 for 102 lower part of tubing hanger is provided with storm valve 103.To stop producing
Or storm valve 103 is closed when causing danger, the closing for returning intubation column 10 is made in order to avoid down-hole pressure is excessive with realizing
It is excessive that the pressure that the production tree on 10 top of intubation column is subject to must be returned, and then blowout occurs.
Preferably, storm valve 103 can control back the opening and closing of intubation column 10 for ball valve, gate valve etc.
Valve.
With continued reference to Fig. 1-Fig. 3.A kind of production system is also provided in other embodiments, comprising: production tree and as above
The completion tubular column, production tree is arranged on the ground, and production tree is connected to the top of completion tubular column.
Wherein completion tubular column includes: naked eye flow string 20 and time intubation column 10；The top of naked eye flow string 20 with
Return the bottom end connection of intubation column 10；First sleeve packer is provided with from top to bottom end interval on naked eye flow string 20
204 and second casing packer 203；Naked eye flow string between first sleeve packer 204 and the second casing packer 203
The first ball seat 205, the naked eye flow string between 20 bottom end of the second casing packer 203 and naked eye flow string are provided on 20
The second ball seat 206 is provided on 20.
Specifically, naked eye flow string 20 include perpendicular to horizontal plane setting the first pipeline section 201 and with the first pipeline section
201 are connected in the second pipeline section 202 for presetting angle, the top of the first pipeline section 201 with the bottom end for returning intubation column 10, the first pipeline section
201 bottom end is connected to the top of the second pipeline section 202, and first sleeve packer 204 and the second casing packer 203 are arranged at
On first pipeline section 201.
First pipeline section 201 and the second pipeline section 202 can be that metal tube or other high-strength corrosion-resisting materials are constituted
Pipe；It is removably connected between first pipeline section 201 and the second pipeline section 202, such as: it can be arranged in the bottom end of the first pipeline section 201
There is connection external screw thread, correspondingly, being provided with connection screw thread hole on the top of the second pipeline section 202, connects external screw thread and connection screw thread
Hole cooperation to realize the connection between the first pipeline section 201 and the second pipeline section 202, or is provided in the bottom end of the first pipeline section 201
Connection screw thread hole is provided with connection external screw thread on the top of second pipe accordingly.
Preferably, according to the different situations of underground, the reasonable size that default angle is set so that the second pipeline section 202 to
Underground extends and is connected to the oil reservoirs of underground, to come out the oil extraction in oil reservoirs.
Specifically, first sleeve packer 204 and the second casing packer 203 can be mechanical packer；Or
First sleeve packer 204 and the second casing packer 203 are hydraulic packer；Or first sleeve packer 204 is
Mechanical packer, the second casing packer 203 are hydraulic packer；Certainly, first sleeve packer 204 can be hydraulic
Formula packer, and the second casing packer 203 is mechanical packer.
Specifically, first sleeve packer 204 can be located at the top of the second pipeline section 202, and the second pipeline section 202 passes through at this time
First sleeve packer 204 connect with intubation column 10 is returned, i.e., the top of first sleeve packer 204 directly with time intubation column 10
Bottom end connection.
Preferably, the top of first sleeve packer 204 is dismountable by anchoring sealing and the bottom end of time intubation column 10
Connection, to facilitate back the installation and removal between intubation column 10 and first sleeve packer 204.
Specifically, it returns intubation column 10 to be arranged perpendicular to horizontal plane, returns intubation column 10 and extended from ground to underground, return intubation column
10 bottom end is connect with the top of naked eye flow string 20, and the top for returning intubation column 10 is connect with production tree, and naked eye is produced
In oil-gas transportation to production tree in tubing string 20, to realize the exploitation to oil gas.
Preferably, it returns intubation column 10 and is sequentially connected by multiple metal tubes and constitute, wherein on the direction perpendicular to horizontal plane
In two adjacent metal tubes, the bottom end of a upper metal tube is provided with external screw thread, and the top of next metal tube is provided with and outer spiral shell
The threaded hole of line cooperation, alternatively, be provided with threaded hole in the bottom end of a upper metal tube, the top of next metal tube be provided with
The external screw thread of threaded hole cooperation.
It specifically, can the first metal of tripping in opposite well on the ground during into well, intubation column 10 is returned in tripping in
Pipe, makes the bottom end of the second metal tube be connected to the top of the first metal tube, backward well in move back to and be intubated column 10, then by third
Metal tube is connected to the top of the second metal tube, to continue to move back to intubation column 10 into well；And so on, until returning intubation column
10 bottom end is connect with the top of naked eye flow string 20.
Specifically, between first sleeve packer 204 and the second casing packer 203 is arranged in the first ball seat 205
In one pipeline section 201, the pitching into the first ball seat 205 so that the first ball seat 205 is closed, and then is beaten into naked eye flow string 20
Pressure, so that the first sleeve packer 204 on 205 top of the first ball seat is set.In the same manner, the pitching into the second ball seat 206, so that
Second ball seat 206 is closed, and then is suppressed into naked eye flow string 20, so that second casing off on 206 top of the second ball seat
Device 203 is set.
Preferably, the first ball seat 205 and the second ball seat 206 can be E type ball seat or the first ball seat 205 and the second ball
Seat 206 is other kinds of ball seat.
Specifically, the use process of completion tubular column provided in this embodiment are as follows: pass through drilling rod first for naked eye flow string
20 are lowered into well casing, and are located at naked eye flow string 20 in oil reservoirs；Use direct circulation for liquid by second set later
The drilling fluid of 203 lower part of pipe packer is for out；Ball sealer is put into later, and ball sealer and the first ball seat 205 cooperate, by the first ball
The naked eye flow string 20 of 205 lower parts of seat is closed；Backward first ball seat, 205 top naked eye flow string 20 in suppress, with
Set first sleeve packer 204, i.e. first sleeve packer 204 is by the annular space between naked eye flow string 20 and casing 30
Closing；Backward second ball seat 206 in pitching, by the second sealed ball seat close；Continue at this time into naked eye flow string 20
It suppresses, so that the second casing packer 203 is set, so that the second casing packer 203 is by naked eye flow string 20 and casing 30
Between annular space closing；Finally into well tripping in return intubation column 10, by return intubation column 10 injected into casing 30 completion fluid with
By the drilling fluid in casing 30 for out, finally it is connected to the bottom end of intubation column 10 and the top of naked eye flow string 20, with complete
At the installation of flow string.
Completion tubular column provided in this embodiment, by connecting the top of naked eye flow string 20 with the bottom end for returning intubation column 10
It is logical, first sleeve packer 204 and the second casing packer are provided with from bottom end to top interval on naked eye flow string 20
203；The first ball seat is provided on naked eye flow string 20 between first sleeve packer 204 and the second casing packer 203
205, the second ball seat 206 being provided on the naked eye flow string 20 of 203 lower part of the second casing packer；Naked eye flow string 20
Upper interval is provided with two casing packers, can reinforce the leakproofness between naked eye flow string 20 and casing 30, avoid
Leakproofness caused by after failing because of a casing packer between naked eye flow string 20 and casing 30 is insufficient, to have reduced well
Operating risk.
In the present invention, unless otherwise specific regulation, the arts such as term " installation ", " connected ", " connection ", " fixation "
Language shall be understood in a broad sense, for example, it may be being fixedly connected, be also possible to removably connect, or be integrally formed, and can be machinery
Connection is also possible to be electrically connected or can communicate each other；It can be directly connected, can also be indirectly connected with by intermediate medium,
It can be the connection inside two elements or the interaction relationship of two elements, unless otherwise restricted clearly.For this
For the those of ordinary skill in field, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
Claims (10)
1. a kind of completion tubular column characterized by comprising naked eye flow string and time intubation column；The naked eye flow string
Top be connected to the bottom end of described time intubation column；First is provided with from top to bottom end interval on the naked eye flow string
Casing packer and the second casing packer；It is described naked between the first sleeve packer and second casing packer
The first ball seat, the institute between second casing packer and the bottom end of the naked eye flow string are provided on eye flow string
It states and is provided with the second ball seat on naked eye flow string.
2. completion tubular column according to claim 1, which is characterized in that first ball seat and the first sleeve packer
Between the naked eye flow string on be provided with secondary plugging valve, the secondary plugging valve is used to cooperate with soluble spool,
The naked eye flow string to be closed.
3. completion tubular column according to claim 1, which is characterized in that the bottom end of the naked eye flow string is provided with floating
Valve.
4. completion tubular column according to claim 3, which is characterized in that the naked eye flow string further includes being located at described float
Ball-throwing type screen casing between valve and second ball seat.
5. completion tubular column according to claim 4, which is characterized in that the naked eye flow string further includes being arranged described
Open hole packer on the outside of ball-throwing type screen casing.
6. completion tubular column according to claim 5, which is characterized in that the open hole packer be it is multiple, it is multiple described naked
Setting of the eye packer along the axially spaced-apart of the naked eye flow string.
7. completion tubular column according to claim 1, which is characterized in that be provided with telescoping tube on described time intubation column.
8. completion tubular column according to claim 1, which is characterized in that the top of described time intubation column is provided with tubing hanger.
9. completion tubular column according to claim 8, which is characterized in that on time intubation column described in the tubing hanger lower part
It is provided with storm valve.
10. a kind of production system characterized by comprising production tree and the described in any item completion tubulars of claim 1-9
Column, the production tree is arranged on the ground, and the production tree is connected to the top of the completion tubular column.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821918473.XU CN209483229U (en) | 2018-11-21 | 2018-11-21 | Completion string and production system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821918473.XU CN209483229U (en) | 2018-11-21 | 2018-11-21 | Completion string and production system |
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| CN209483229U true CN209483229U (en) | 2019-10-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110952963A (en) * | 2019-10-30 | 2020-04-03 | 中国石油化工股份有限公司 | Structure and method for producing tubular column with pressing-down gas lift |
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2018
- 2018-11-21 CN CN201821918473.XU patent/CN209483229U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110952963A (en) * | 2019-10-30 | 2020-04-03 | 中国石油化工股份有限公司 | Structure and method for producing tubular column with pressing-down gas lift |
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