CN206071532U - The solid completion tubular pile device of two boiled water horizontal wells of one kind - Google Patents
The solid completion tubular pile device of two boiled water horizontal wells of one kind Download PDFInfo
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- CN206071532U CN206071532U CN201621083687.0U CN201621083687U CN206071532U CN 206071532 U CN206071532 U CN 206071532U CN 201621083687 U CN201621083687 U CN 201621083687U CN 206071532 U CN206071532 U CN 206071532U
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Abstract
The utility model discloses a kind of solid completion tubular pile device of two boiled water horizontal well, belong to drilling engineering technical field, pitching sliding sleeve, pressure reduction sliding sleeve, open hole packer and the float shoe be made up of vertical section, tilting section and horizontal segment including sleeve pipe, the tubing string in sleeve pipe, tubing string from top to bottom, being arranged on horizontal segment, it is characterised in that：Also include float collar and self-styled ball seat, the open hole packer is at least three, a pitching sliding sleeve is provided between the adjacent open hole packer of any two, the tubing string passes sequentially through float shoe described in screwed connection, float collar, self-styled ball seat, pressure reduction sliding sleeve, open hole packer and pitching sliding sleeve from top to bottom.Without the need for hanging packer, direct cementing well after predetermined well depth is lowered into, after cement slurry sets, directly carries out reservoir reconstruction, greatly improves safety this utility model；Bit speed can be effectively improved, is shortened and is bored completion period, reduce development cost, improve recovery ratio.
Description
Technical field
This utility model is related to drilling engineering technical field, more particularly to a kind of solid completion tubular column dress of two boiled water horizontal well
Put.
Background technology
Drilling well in oil-gas mining mainly includes drilling engineering and Well Completion Engineering of Oil Reservoirs.
Drilling engineering is exactly that exploration and development target zone is drilled into from spudding in, is drilled the drilling process of full well drilling depth.Spud in, be
After entering conduit or each layer sleeve pipe under finger, first drill bit starts drilling.
Drilling can be divided into spuds in, spuds in for the second time, spudding in for the third time for the first time.A bite well from well depth be zero start bore
Enter, claim to spud in for the first time, referred to as one open；Spudded in after surface pipe well cementation again, title is spudded in for the second time, referred to as two opened；Technology set
Pipe is spudded in after having cemented the well again, is claimed third time to spud in, referred to as three is opened；As protective casing have two-layer, three layers, then also have four open, five
Open.Drilling engineering is to the effect that：Drilling make a trip, drilling and coring delivery, and in drilling well with well cementation, well logging, well logging and the borehole wall
Core, the cooperating of drillstem test.Drilling fluid, pipe, the technical service of Special Drilling Operation are through the overall process crept into.Drilling
Engineering is the major project of drilling well, its engineering technology level and quality, and each related work post, technical service, each link of drilling well
The coordination linking of work coordinates, and is safety drilling, shortens drilling period, reduces material consumption, determines engineering cost height and surveys
Visit the key of returns of investment height.
One opens and mainly includes：Bore top layer, layer sleeve pipe, well cementation；Dress well head；Pressure testing；The installation of blowout control equipment.Two open master
Including：Drilling；Drillstem test；Under enter protective casing and cement the well.Three open and mainly include：Well head, pressure testing are installed；Drilling, brill are opened
Oil-gas Layer；Completion logging；Lower production casing is simultaneously cemented the well.
Well Completion Engineering of Oil Reservoirs be open oil reservoir from brill from the beginning of, to setting of casing cementing well, perforation, lower flow string, discharge opeing, until
The systematic engineering of business gone into operation.Major project content is：The production strings such as completion logging, sidewall coring, setting of casing, cementing are solid
Well, survey sound width, pressure testing, dress wellhead assembly etc..The events in operation such as completion phase well logging, test are more, and consumption of materials is big, and expense is sent out
Life is more, the particularly cased hole of multilamellar, can make drilling cost at double or several times of rising.Completion is also down-hole complexity and accident
The quality in multiple stage, particularly cementing quality is directly connected to the success and failure of a bite well.
At present, spud in into mode using three more than horizontal well.The horizontal well development implemented at present, horizontal section length is from 600 meters
To 3056 meters, wherein most well horizontal segments can arrange longer level in 1000-1500 rice with going deep into for development process
The Favorable Zones of section tail off, and in order to effectively employ II, III class reservoir, realize the purpose of cost efficiency, main arrangement 400-600 rice
Short horizontal segment well reservoir because horizontal segment is longer, the technical barrier for running into will be more.
Spud in into the horizontal well of mode using three, wherein two exploitations are solid at the initiating terminal of horizontal segment with entering under 7 inches of sleeve pipes
Well, three exploitation with 6 inch drill bits complete horizontal segment drilling, completion using under enter 5 inches of casing cementings or under enter 3.5 inches of bore holes
Packer is combined, then reservoir is implemented to go into operation after transformation.Three spud in into mode:In presence, the complete time is long, bores completion period length, storage
Layer transformation cycle length, limit because of the little factor of completion tubular column size, it is impossible to extensive spatial cuboids depth is implemented to reservoir and is changed
Make, reservoir reconstruction effect is limited, development cost are high, meanwhile, because completion tubular column size it is little, cannot be to horizontal segment in later stage production
Implement the technological measures such as well workover, water blockoff, refracturing transformation, be unfavorable for economy, the Efficient Development of horizontal well.
Publication No. CN 201714364U, publication date are that the Chinese patent literature of on 01 19th, 2011 discloses one kind
Tubular column for horizontal well barefoot well completion staged fracturing acidizing tool, including tubing string, hydraulic anchor, it is characterised in that：Also include that circulation is slided
Set, hanging packer, pitching sliding sleeve A, open hole packer A, pitching sliding sleeve B, open hole packer B, pitching sliding sleeve C, bore hole packing
Device C, pitching sliding sleeve D, open hole packer D, pitching sliding sleeve E, open hole packer E, pressure reduction sliding sleeve, setting ball seat, back-pressure valve, screen casing
And guide shoe, and the packing of circulation slide sleeve, hydraulic anchor, hanging packer, pitching sliding sleeve A, open hole packer A, pitching sliding sleeve B, bore hole
Device B, pitching sliding sleeve C, open hole packer C, pitching sliding sleeve D, open hole packer D, pitching sliding sleeve E, open hole packer E, pressure reduction are slided
Set, setting ball seat, back-pressure valve, screen casing and guide shoe are connected in turn on the tubing string.
Tubular column for horizontal well barefoot well completion staged fracturing acidizing tool disclosed in the patent documentation, completion tubular column structure are quite multiple
It is miscellaneous, there is hanging packer in its structure, be that tool string is suspended in upper sleeve, top fixed with hydraulic anchor, with liquid
Pressure releasing tool, after tubing string is lowered into predetermined well depth, need instrument is carried out giving up seat extension, then plays out running tool, under enter
Tie back tool could implement reservoir reconstruction；During entering under completion tubular column, hanging packer is affected by many factors in well, easily
Work ahead, easily causes security incident, even results in scrapping for well；There is bit speed low, brill completion period is long, develops into
This height and the low defect of recovery ratio；And tool bore is less, during reservoir reconstruction, such as there is sand plug, processing means are few, are processed into
This height, has a strong impact on correctional effect, causes gas well to be scrapped when serious.
Utility model content
This utility model is in order to overcome the defect of above-mentioned prior art, there is provided a kind of solid completion tubular column dress of two boiled water horizontal well
Put, this utility model without the need for hanging packer, direct cementing well after predetermined well depth is lowered into, after cement slurry sets,
Reservoir reconstruction is directly carried out, safety is greatly improved；Bit speed can be effectively improved, is shortened and is bored completion period, reduce out
Cost is sent out, recovery ratio is improved.
This utility model is achieved through the following technical solutions：
A kind of solid completion tubular pile device of two boiled water horizontal wells, including sleeve pipe, the tubing string in sleeve pipe, tubing string from top to bottom by
Pitching sliding sleeve, pressure reduction sliding sleeve, open hole packer and float shoe that vertical section, tilting section and horizontal segment are constituted, are arranged on horizontal segment,
It is characterized in that：Also include float collar and self-styled ball seat, the open hole packer is at least three, the adjacent bore hole packing of any two
It is provided with a pitching sliding sleeve between device, the tubing string passes sequentially through float shoe described in screwed connection, float collar from top to bottom, from blocking
Seat, pressure reduction sliding sleeve, open hole packer and pitching sliding sleeve.
The external diameter of the pitching sliding sleeve for being set gradually along tubing string from top to bottom is identical, and internal diameter gradually increases.
The self-styled ball seat includes the ball-and-seat for linking together and seat of receiving, and seat of receiving is located at the top of ball-and-seat.
The size of described sleeve pipe is 5.5 inches.
The size of the open hole packer is 8.5 inches.
During use, comprehensive analysis is carried out according to a bite horizontal well horizontal segment reservoir oily situation, determine that formation testing gas is transformed
Well section.
First, the horizontal segment of tubing string is segmented, so that it is determined that the use number of open hole packer, each bore hole are insulated
Enter the well depth that reach under device；The number of pitching sliding sleeve, the well depth that each pitching sliding sleeve should be reached；Cement mortar sealing well
Section, cement slurry density, each displacement fluid density etc..
Secondly, drifting is simulated to finishing drilling well, it is ensured that tubing string normally can be lowered into up to predetermined well depth.
Again, running string device, under enter predetermined well depth after, circulating fluid.
Finally, cementing operation：According to cementing operation design injection prepad fluid, neck slurry, cement mortar, insulating liquid, the setting ball of throwing,
Cement mortar circulation is replaced in place；Start open hole packer：Judge that setting ball reaches self-styled ball seat according to operation pressure, continue note
Enter displacement fluid, pressure rise restarts open hole packer to design pressure, and construction terminates.
The operation principle of the self-styled ball seat of this utility model is：Receive seat internal diameter less than setting ball external diameter, when setting ball
After seat receive from well head input whereabouts arrival, sealing in pipe, is realized.The injection liquid from pipe, overpressure is raised, when being increased to
During open hole packer unpacking pressure, open hole packer starts sealing, continues injection liquid, and pressure also continues to raise, when reaching pressure
During difference sliding sleeve Opening pressure, pressure reduction sliding sleeve is opened.
The operation principle of this utility model pressure reduction sliding sleeve is：After setting ball is put into, setting ball reaches seat of receiving, from pipe
Injection liquid, pressure rise, when certain pressure value is reached, shear pin is cut off, and pressure reduction sliding sleeve is opened, in tubing string pipe and pressure reduction
The outer toric space connection of sliding sleeve pipe, i.e., connected with one section of reservoir of shaft bottom foot.
The operation principle of this utility model pitching sliding sleeve is：When setting ball from well head input tubing string in, under fall seat of receiving
When, because the external diameter of setting ball is more than an internal diameter of receiving, sealing is realized, when pressure is raised to certain value, that is, pipe external and internal pressure
When difference reaches design load, shear pin is cut off, and setting ball and seat of receiving are descending, and window is opened, and realizes the inside and outside connection of pipe.
The operation principle of this utility model open hole packer is：When inside and outside differential pressure reaches design load, shear pin is cut off,
Fluid cylinder is promoted and promotes packing element longitudinally to be extruded, external diameter increase 10%-30%, realizes sealing；All open hole packer size uniformities
Sample, when pressure reaches unpacking pressure during work, all open hole packers that a bite down-hole enters are while unpacking.
The beneficial effects of the utility model are mainly manifested in following aspect：
First, this utility model, including float collar and self-styled ball seat, open hole packer are at least three, and any two is adjacent naked
A pitching sliding sleeve is provided between eye packer, tubing string passes sequentially through float shoe described in screwed connection, float collar, self-styled from top to bottom
Ball seat, pressure reduction sliding sleeve, open hole packer and pitching sliding sleeve, wherein, float shoe plays guiding function；Float collar is managed during lower tubular column
Outer drilling fluid is unable in sleeve pipe, and in normal sealing state, but the drilling well liquid columnpressure of perfusion is higher than ring-like sky in managing
Between head of liquid when, pipe in drilling fluid then toric space can be entered by float collar；Self-styled ball seat, both with single current valve action, together
When stacker blocking, assistance realize open hole packer sealing and assistance realize pressure reduction sliding sleeve open；Pressure reduction sliding sleeve, when tubing string it is intrinsic pressure
When power is higher than pipe external pressure setting value, pressure reduction sliding sleeve is opened, and during reservoir reconstruction, fracturing fluid just can enter ground by this passage
Layer；Pitching sliding sleeve, forms window for opening tubing string to reservoir segmentation, and during reservoir reconstruction, fracturing fluid enters ground by this window
Layer；Open hole packer, for insulating the upper and lower toric space of jacket exterior, horizontal fragmentation is separated, realizes reservoir fracturing improvement sheet
Duan Shi, pressure can not be delivered in other sections, and other horizontal segments are unaffected up and down；Sleeve pipe, for by the open hole bore for getting out
Packing, forms oil gas flow channel；Used as a complete technical scheme, compared with Publication No. CN 201714364U, publication date is
For the Chinese patent literature of on 01 19th, 2011, due to no hanging packer, hydraulic anchor, hydraulic pressure in whole tubular column unit
Releasing tool and tie back tool, after tubing string is lowered into predetermined well depth, direct cementing well, after cement slurry sets, directly enters
Row reservoir reconstruction, greatly improves safety；Tubular column unit total cost have dropped 40%, and pressing crack construction discharge capacity is up to 10 cubes
M/min, realize the depth to reservoir and transform, the reservoir reconstruction engineering time is greatly shortened；Correctional effect lifted 20% with
On；Transformation reservoir construction pressure break liquid measure is greatly reduced, reservoir reconstruction operating expenses more than 10% is saved；Effectively raise brill
Well speed, shortens brill completion period, reduces development cost, improve recovery ratio.
2nd, this utility model, the external diameter of the pitching sliding sleeve for being set gradually along tubing string from top to bottom are identical, and internal diameter gradually increases
Greatly, when setting ball is from well head input tubing string, under fall when receiving, because the external diameter of setting ball is more than an internal diameter of receiving, realize
Sealing, when pressure is raised to certain value, that is, pipe external and internal pressure difference, when reaching design load, shear pin is cut off, setting ball and
Seat of receiving is descending, and window is opened, and realizes the inside and outside connection of pipe；By the internal diameter for increasing pitching sliding sleeve from top to bottom successively along tubing string,
Good sealing can either be realized, it is also possible to ensure the inside and outside connection smoothness of pipe.
3rd, this utility model, self-styled ball seat include the ball-and-seat for linking together and seat of receiving, and seat of receiving is located at ball-and-seat
Top, when setting ball from well head input whereabouts arrival receive seat after, pipe in can realize good sealing；The injection liquid from pipe
Body, overpressure are raised, and when open hole packer unpacking pressure is increased to, open hole packer starts sealing, continues injection liquid,
Pressure also continues to raise, and when pressure reduction sliding sleeve Opening pressure is reached, pressure reduction sliding sleeve is opened, using this ad hoc structure from blocking
Seat, both with single current valve action, while can stacker blocking, can effectively assist to realize open hole packer sealing and assist real
Existing pressure reduction sliding sleeve is opened.
4th, this utility model, the size of sleeve pipe is 5.5 inches, increases internal diameter, facilitates implementation the depth transformation of reservoir,
When reservoir reconstruction, if occur sand plug, can effective process, reduce intractability and cost.
5th, this utility model, the size of open hole packer is 8.5 inches, when inside and outside differential pressure reaches design load, shear pin
Nail is cut off, external diameter increase 10%-30%, can realize good sealing, and sealing stability is strong；All open hole packer sizes are equal
Equally, when pressure reaches unpacking pressure during work, all open hole packers that a bite down-hole enters are while unpacking, acts in agreement.
Description of the drawings
This utility model is described in further detail below in conjunction with specification drawings and specific embodiments, its
In：
Fig. 1 is structural representation of the present utility model；
Structural representations of the Fig. 2 for the self-styled ball seat of this utility model；
Labelling in figure：1st, sleeve pipe, 2, tubing string, 3, vertical section, 4, tilting section, 5, horizontal segment, 6, pitching sliding sleeve, 7, pressure reduction slides
Set, 8, open hole packer, 9, float shoe, 10, float collar, 11, self-styled ball seat, 12, ball-and-seat, 13, seat of receiving.
Specific embodiment
Embodiment 1
A kind of solid completion tubular pile device of two boiled water horizontal wells, including sleeve pipe 1, the tubing string 2 in sleeve pipe 1, tubing string 2 on to
Under be made up of vertical section 3, tilting section 4 and horizontal segment 5, the pitching sliding sleeve 6 that is arranged on horizontal segment 5, pressure reduction sliding sleeve 7, bore hole envelope
Every device 8 and float shoe 9, also including float collar 10 and self-styled ball seat 11, the open hole packer 8 is three, the adjacent bore hole of any two
A pitching sliding sleeve 6 is provided between packer 8, the tubing string 2 passes sequentially through float shoe 9 described in screwed connection from top to bottom, floats
Hoop 10, self-styled ball seat 11, pressure reduction sliding sleeve 7, open hole packer 8 and pitching sliding sleeve 6.
The present embodiment is most basic embodiment, including float collar and self-styled ball seat, the self-styled ball seat of prior art,
Open hole packer is at least three, is provided with a pitching sliding sleeve between the adjacent open hole packer of any two, tubing string from it is lower to
On pass sequentially through float shoe described in screwed connection, float collar, self-styled ball seat, pressure reduction sliding sleeve, open hole packer and pitching sliding sleeve, wherein,
Float shoe plays guiding function；During lower tubular column, the drilling fluid outside pipe is unable in sleeve pipe float collar, in normal sealing state,
But when in managing, the drilling well liquid columnpressure of perfusion is higher than toric space head of liquid, in pipe, drilling fluid then can enter ring by float collar
Type space；Self-styled ball seat, both with single current valve action, while stacker blocking, assists to realize open hole packer sealing and assist
Realize that pressure reduction sliding sleeve is opened；Pressure reduction sliding sleeve, when in tubing string, pressure is higher than pipe external pressure setting value, pressure reduction sliding sleeve is opened, reservoir
During transformation, fracturing fluid just can enter stratum by this passage；Pitching sliding sleeve, forms window for opening tubing string to reservoir segmentation
Mouthful, during reservoir reconstruction, fracturing fluid enters stratum by this window；Open hole packer, for insulating jacket exterior ring-like sky up and down
Between, horizontal fragmentation is separated, when realizing this section of reservoir fracturing improvement, pressure can not be delivered in other sections, up and down other levels
Section is unaffected；Sleeve pipe, for the open hole bore for getting out is insulated, forms oil gas flow channel；As a complete technology
Scheme, it is compared with Publication No. CN 201714364U, for publication date is the Chinese patent literature of on 01 19th, 2011, whole to manage
Due to no hanging packer, hydraulic anchor, hydraulic releasing tool and tie back tool in column device, when tubing string is lowered into predetermined well depth
Direct cementing well, after cement slurry sets, directly carries out reservoir reconstruction, greatly improves safety afterwards；Tubular column unit
Total cost have dropped 40%, and pressing crack construction discharge capacity realizes the depth to reservoir and transforms, significantly contract up to 10 cubic meters per minutes
The short reservoir reconstruction engineering time；Correctional effect lifts more than 20%；Transformation reservoir construction pressure break liquid measure is greatly reduced, is saved
Reservoir reconstruction operating expenses more than 10%；Bit speed is effectively raised, brill completion period is shortened, is reduced and develop into
This, improves recovery ratio.
Embodiment 2
A kind of solid completion tubular pile device of two boiled water horizontal wells, including sleeve pipe 1, the tubing string 2 in sleeve pipe 1, tubing string 2 on to
Under be made up of vertical section 3, tilting section 4 and horizontal segment 5, the pitching sliding sleeve 6 that is arranged on horizontal segment 5, pressure reduction sliding sleeve 7, bore hole envelope
Every device 8 and float shoe 9, also including float collar 10 and self-styled ball seat 11, the open hole packer 8 is four, the adjacent bore hole of any two
A pitching sliding sleeve 6 is provided between packer 8, the tubing string 2 passes sequentially through float shoe 9 described in screwed connection from top to bottom, floats
Hoop 10, self-styled ball seat 11, pressure reduction sliding sleeve 7, open hole packer 8 and pitching sliding sleeve 6.
The external diameter of the pitching sliding sleeve 6 for being set gradually along tubing string 2 from top to bottom is identical, and internal diameter gradually increases.
The present embodiment is a better embodiment, and the external diameter of the pitching sliding sleeve for being set gradually along tubing string from top to bottom is identical,
Internal diameter gradually increases, when setting ball is from well head input tubing string, under fall when receiving, because the external diameter of setting ball is more than seat of receiving
Internal diameter, realizes sealing, and when pressure is raised to certain value, that is, pipe external and internal pressure difference, when reaching design load, shear pin is cut off,
Setting ball and seat of receiving are descending, and window is opened, and realize the inside and outside connection of pipe；By increasing pitching sliding sleeve from top to bottom successively along tubing string
Internal diameter, good sealing can either be realized, it is also possible to ensure the inside and outside connection smoothness of pipe.
Embodiment 3
A kind of solid completion tubular pile device of two boiled water horizontal wells, including sleeve pipe 1, the tubing string 2 in sleeve pipe 1, tubing string 2 on to
Under be made up of vertical section 3, tilting section 4 and horizontal segment 5, the pitching sliding sleeve 6 that is arranged on horizontal segment 5, pressure reduction sliding sleeve 7, bore hole envelope
Every device 8 and float shoe 9, also including float collar 10 and self-styled ball seat 11, the open hole packer 8 is four, the adjacent bore hole of any two
A pitching sliding sleeve 6 is provided between packer 8, the tubing string 2 passes sequentially through float shoe 9 described in screwed connection from top to bottom, floats
Hoop 10, self-styled ball seat 11, pressure reduction sliding sleeve 7, open hole packer 8 and pitching sliding sleeve 6.
The external diameter of the pitching sliding sleeve 6 for being set gradually along tubing string 2 from top to bottom is identical, and internal diameter gradually increases.
The self-styled ball seat 11 includes the ball-and-seat 12 for linking together and seat 13 of receiving, and seat 13 of receiving is located at ball-and-seat 12
Top.
The present embodiment is another better embodiment, and self-styled ball seat includes the ball-and-seat for linking together and receives seat, connects
Ball seat is located at the top of ball-and-seat, after setting ball receives seat from well head input whereabouts arrival, can realize good close in pipe
Envelope；The injection liquid from pipe, overpressure are raised, and when open hole packer unpacking pressure is increased to, open hole packer starts close
Envelope, continues injection liquid, and pressure also continues to raise, and when pressure reduction sliding sleeve Opening pressure is reached, pressure reduction sliding sleeve is opened, using this
The self-styled ball seat of ad hoc structure, both with single current valve action, while can stacker blocking, can effectively assist to realize that bore hole is sealed
Seal every device and assistance realizes that pressure reduction sliding sleeve is opened.
Embodiment 4
A kind of solid completion tubular pile device of two boiled water horizontal wells, including sleeve pipe 1, the tubing string 2 in sleeve pipe 1, tubing string 2 on to
Under be made up of vertical section 3, tilting section 4 and horizontal segment 5, the pitching sliding sleeve 6 that is arranged on horizontal segment 5, pressure reduction sliding sleeve 7, bore hole envelope
Every device 8 and float shoe 9, also including float collar 10 and self-styled ball seat 11, the open hole packer 8 is four, the adjacent bore hole of any two
A pitching sliding sleeve 6 is provided between packer 8, the tubing string 2 passes sequentially through float shoe 9 described in screwed connection from top to bottom, floats
Hoop 10, self-styled ball seat 11, pressure reduction sliding sleeve 7, open hole packer 8 and pitching sliding sleeve 6.
The external diameter of the pitching sliding sleeve 6 for being set gradually along tubing string 2 from top to bottom is identical, and internal diameter gradually increases.
The self-styled ball seat 11 includes the ball-and-seat 12 for linking together and seat 13 of receiving, and seat 13 of receiving is located at ball-and-seat 12
Top.
The size of described sleeve pipe 1 is 5.5 inches.
The present embodiment is another better embodiment, and the size of sleeve pipe is 5.5 inches, increases internal diameter, facilitates implementation storage
Layer depth transformation, when reservoir reconstruction, if occur sand plug, can effective process, reduce intractability and cost.
Embodiment 5
A kind of solid completion tubular pile device of two boiled water horizontal wells, including sleeve pipe 1, the tubing string 2 in sleeve pipe 1, tubing string 2 on to
Under be made up of vertical section 3, tilting section 4 and horizontal segment 5, the pitching sliding sleeve 6 that is arranged on horizontal segment 5, pressure reduction sliding sleeve 7, bore hole envelope
Every device 8 and float shoe 9, also including float collar 10 and self-styled ball seat 11, the open hole packer 8 is five, the adjacent bore hole of any two
A pitching sliding sleeve 6 is provided between packer 8, the tubing string 2 passes sequentially through float shoe 9 described in screwed connection from top to bottom, floats
Hoop 10, self-styled ball seat 11, pressure reduction sliding sleeve 7, open hole packer 8 and pitching sliding sleeve 6.
The external diameter of the pitching sliding sleeve 6 for being set gradually along tubing string 2 from top to bottom is identical, and internal diameter gradually increases.
The self-styled ball seat 11 includes the ball-and-seat 12 for linking together and seat 13 of receiving, and seat 13 of receiving is located at ball-and-seat 12
Top.
The size of described sleeve pipe 1 is 5.5 inches.
The size of the open hole packer 8 is 8.5 inches.
The present embodiment is preferred forms, including float collar and self-styled ball seat, the self-styled ball seat of prior art, bore hole
Packer is at least three, is provided with a pitching sliding sleeve between the adjacent open hole packer of any two, tubing string from top to bottom according to
It is secondary by float shoe, float collar, self-styled ball seat, pressure reduction sliding sleeve, open hole packer and pitching sliding sleeve described in screwed connection, wherein, float shoe
Play guiding function；During lower tubular column, the drilling fluid outside pipe is unable in sleeve pipe float collar, in normal sealing state, but manages
When the drilling well liquid columnpressure of interior perfusion is higher than toric space head of liquid, in pipe, drilling fluid then can enter ring-like sky by float collar
Between；Self-styled ball seat, both with single current valve action, while stacker blocking, assists to realize open hole packer sealing and assist to realize
Pressure reduction sliding sleeve is opened；Pressure reduction sliding sleeve, when in tubing string, pressure is higher than pipe external pressure setting value, pressure reduction sliding sleeve is opened, reservoir reconstruction
When, fracturing fluid just can enter stratum by this passage；Pitching sliding sleeve, forms window, storage for opening tubing string to reservoir segmentation
During layer transformation, fracturing fluid enters stratum by this window；Open hole packer, for insulating the upper and lower toric space of jacket exterior, will
Horizontal fragmentation separates, and when realizing this section of reservoir fracturing improvement, pressure can not be delivered in other sections, and other horizontal segments are not received up and down
Affect；Sleeve pipe, for the open hole bore for getting out is insulated, forms oil gas flow channel；As a complete technical scheme, compared with
Publication No. CN 201714364U, for publication date is the Chinese patent literature of on 01 19th, 2011, in whole tubular column unit
Due to no hanging packer, hydraulic anchor, hydraulic releasing tool and tie back tool, directly note after tubing string is lowered into predetermined well depth
Well cementing of cement, after cement slurry sets, directly carries out reservoir reconstruction, greatly improves safety；Under tubular column unit total cost
40% is dropped, pressing crack construction discharge capacity realizes the depth to reservoir and transforms, reservoir is greatly shortened up to 10 cubic meters per minutes
The rebuilding construction time；Correctional effect lifts more than 20%；Transformation reservoir construction pressure break liquid measure is greatly reduced, reservoir reconstruction is saved
Operating expenses more than 10%；Bit speed is effectively raised, brill completion period is shortened, is reduced development cost, improve
Recovery ratio.The size of open hole packer is 8.5 inches, and when inside and outside differential pressure reaches design load, shear pin is cut off, external diameter increase
10%-30%, can realize good sealing, and sealing stability is strong；All open hole packer size uniformity samples, when pressure during work
Power reaches unpacking pressure, and all open hole packers that a bite down-hole enters are while unpacking, acts in agreement.
During use, comprehensive analysis is carried out according to a bite horizontal well horizontal segment reservoir oily situation, determine that formation testing gas is transformed
Well section.
First, the horizontal segment of tubing string is segmented, so that it is determined that the use number of open hole packer, each bore hole are insulated
Enter the well depth that reach under device；The number of pitching sliding sleeve, the well depth that each pitching sliding sleeve should be reached；Cement mortar sealing well
Section, cement slurry density, each displacement fluid density etc..
Secondly, drifting is simulated to finishing drilling well, it is ensured that tubing string normally can be lowered into up to predetermined well depth.
Again, running string device, under enter predetermined well depth after, circulating fluid.
Finally, cementing operation：According to cementing operation design injection prepad fluid, neck slurry, cement mortar, insulating liquid, the setting ball of throwing,
Cement mortar circulation is replaced in place；Start open hole packer：Judge that setting ball reaches self-styled ball seat according to operation pressure, continue note
Enter displacement fluid, pressure rise restarts open hole packer to design pressure, and construction terminates.
Claims (3)
1. a kind of two boiled water horizontal well consolidates completion tubular pile device, including sleeve pipe (1), the tubing string (2) in sleeve pipe (1), tubing string (2)
The pitching sliding sleeve (6) that be made up of vertical section (3), tilting section (4) and horizontal segment (5) from top to bottom, is arranged on horizontal segment (5),
Pressure reduction sliding sleeve (7), open hole packer (8) and float shoe (9), it is characterised in that：Also include float collar (10) and self-styled ball seat (11), institute
State open hole packer (8) and be at least three, between the adjacent open hole packer of any two (8), be provided with a pitching sliding sleeve (6),
The tubing string (2) passes sequentially through float shoe described in screwed connection (9), float collar (10), self-styled ball seat (11), pressure reduction sliding sleeve from top to bottom
(7), open hole packer (8) and pitching sliding sleeve (6).
2. a kind of two boiled water horizontal well according to claim 1 consolidates completion tubular pile device, it is characterised in that：The self-styled ball seat
(11) including the ball-and-seat (12) and seat of receiving (13) for linking together, top of the seat of receiving (13) positioned at ball-and-seat (12).
3. a kind of two boiled water horizontal well according to claim 1 and 2 consolidates completion tubular pile device, it is characterised in that：Described sleeve pipe
(1) size is 5.5 inches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621083687.0U CN206071532U (en) | 2016-09-27 | 2016-09-27 | The solid completion tubular pile device of two boiled water horizontal wells of one kind |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621083687.0U CN206071532U (en) | 2016-09-27 | 2016-09-27 | The solid completion tubular pile device of two boiled water horizontal wells of one kind |
Publications (1)
| Publication Number | Publication Date |
|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106223898A (en) * | 2016-09-27 | 2016-12-14 | 中国石油集团川庆钻探工程有限公司 | The solid completion integral tubular column unit of a kind of two boiled water horizontal wells |
| CN111706305A (en) * | 2020-06-30 | 2020-09-25 | 山西省煤炭地质勘查研究院 | Selective segmented well cementation process and well body structure of double-target-layer coal bed gas well |
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2016
- 2016-09-27 CN CN201621083687.0U patent/CN206071532U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106223898A (en) * | 2016-09-27 | 2016-12-14 | 中国石油集团川庆钻探工程有限公司 | The solid completion integral tubular column unit of a kind of two boiled water horizontal wells |
| CN106223898B (en) * | 2016-09-27 | 2020-04-10 | 中国石油集团川庆钻探工程有限公司 | Two horizontal well cementing and completion integrated pipe column devices that open |
| CN111706305A (en) * | 2020-06-30 | 2020-09-25 | 山西省煤炭地质勘查研究院 | Selective segmented well cementation process and well body structure of double-target-layer coal bed gas well |
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