CN109958417A - Fracturing sand control tubing string and method - Google Patents
Fracturing sand control tubing string and method Download PDFInfo
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- CN109958417A CN109958417A CN201711428032.1A CN201711428032A CN109958417A CN 109958417 A CN109958417 A CN 109958417A CN 201711428032 A CN201711428032 A CN 201711428032A CN 109958417 A CN109958417 A CN 109958417A
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- sand control
- fracturing
- control screen
- sand
- tubing string
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- 239000004576 sand Substances 0.000 title claims abstract description 211
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000004090 dissolution Methods 0.000 claims abstract description 9
- 239000012530 fluid Substances 0.000 claims description 17
- 206010055018 Gingival cyst Diseases 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 210000004907 gland Anatomy 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 230000002265 prevention Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 10
- 239000003129 oil well Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 230000010354 integration Effects 0.000 description 6
- 238000011084 recovery Methods 0.000 description 4
- 241000254175 Anthonomus grandis Species 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 241000826860 Trapezium Species 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000003079 shale oil Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/086—Screens with preformed openings, e.g. slotted liners
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Pipe Accessories (AREA)
- Earth Drilling (AREA)
Abstract
The present invention provides a kind of fracturing sand control tubing string and method, fracturing sand control tubing string includes casing and the oil pipe that inside pipe casing is arranged in, annular space is formed between casing and oil pipe, fracturing packer is provided on oil pipe, oil pipe bottom inner portion is arranged with ball seat and sand control screen, and ball seat is threaded in the top of sand control screen, and the bottom end of oil pipe is connected with limiting device, limiting device is located at the lower section of sand control screen, and the length of sand control screen is 20 to 30 meters bigger than reservoir thickness；The top of sand control screen is provided with female thread, is provided with limiting slot in limiting device；Wherein, when putting into solvable ball impact ball seat, ball seat drives sand control screen to move downward, until female thread is fastened in limiting slot；Sand control screen in place after, stand 48 hours, the dissolution of solvable ball.Fracturing sand control tubing string provided by the invention can guarantee that stratum is not returned and spits reservoir sand and fracturing sand without second completion, realize pressure break and sand prevention integrated.
Description
Technical field
The present invention relates to oil and gas wells in oil fields exploitation completion technique field more particularly to a kind of fracturing sand control tubing string and methods.
Background technique
It often needs to cooperate pressure break when exploiting especially for heterogeneous loose cementation sandstone oil reservoir in field of petroleum exploitation
Operation forms the crack of deep penetration, high flow conductivity, in oil reservoir to improve oil well output.Meanwhile sand production is loose sand
Shale oil hides common problem in recovery process, and shaking out will cause sand and bury a series of harm such as oil reservoir, equipment corrosion and cave-in,
Directly affect oily well capacity and yield.
The prior art needs to insert a large amount of quartz sands or haydite on stratum in pressure break, needs to carry out second completion after pressure break
Tripping in sand control screen, to play the role of sand control.But the prior art is frequently present of pressure when returning discharge fracturing fluid after the completion of pressure break
It splits sand and returns the problem of spitting, not only back-up sand effect is poor, returns later period sand washing and brings many difficulties.Simultaneously as heterogeneous loose
There is phenomenon of shaking out in sandstone itself, second completion tripping in sand control screen is directly carried out after pressure break, and repeating rountrip can cause
Bottom pressure be less than strata pressure, cause stratum cave-in, so cause screen casing can not tripping in designated position, do not have sand control
Effect.
Summary of the invention
The present invention provides a kind of fracturing sand control tubing string and method, can guarantee ground without second completion
Layer does not return and spits reservoir sand and fracturing sand, realizes pressure break and sand prevention integrated.
One aspect of the present invention provides a kind of fracturing sand control tubing string, and the fracturing sand control tubing string includes casing and is arranged described
The oil pipe of inside pipe casing forms annular space, is provided with fracturing packer on the oil pipe between described sleeve pipe and the oil pipe,
The oil pipe bottom inner portion is arranged with ball seat and sand control screen, and the ball seat is threaded in the sand control screen
Top, the bottom end of the oil pipe are connected with limiting device, and the limiting device is located at the lower section of the sand control screen, the sand control
The length of screen casing is 20 to 30 meters bigger than reservoir thickness；
The top of the sand control screen is provided with female thread, is provided with limiting slot in the limiting device；
Wherein, when putting into the solvable ball impact ball seat, the ball seat drives the sand control screen to move downward, until
The female thread is fastened in the limiting slot；The sand control screen in place after, stand 48 hours, the solvable ball dissolution.
Fracturing sand control tubing string provided in an embodiment of the present invention while taking into account fracturing effect, guarantees the stratum stratum Bu Fantu
Sand and fracturing sand, it can be achieved that pressure break and sand control integration.Due to reducing the flow chart of second completion tripping in sand control pipe,
Complete well cost reduces, while avoiding the problem of second completion repeats stratum cave-in caused by rountrip.Fracturing fluid returns
During row, the sand control screen that reservoir is completely covered prevents from the sand for coming into stratum from returning spitting, ensure that sand controlling result, increase simultaneously
Big oil well area of passage, improves oily capacity of well.
Fracturing sand control tubing string as described above, the limiting device are connect with the tubing round thread.
Fracturing sand control tubing string as described above, the bottom end of the sand control screen is additionally provided with pipe shoe, the side wall of the pipe shoe
Bottom be provided with the inclined surface extended downwardly, the inclined surface is abutted with the limiting device.
Fracturing sand control tubing string as described above, the outer diameter of the pipe shoe are greater than the internal diameter of limiting device, sand control screen it is outer
Diameter is not less than the internal diameter of limiting device.
Fracturing sand control tubing string as described above, the fracturing packer are internally provided with releasing gadget, the loss mobile phone
Structure is insertion tube gingival cyst of mucous gland in the newborn button or conventional left-hand thread structure.
Fracturing sand control tubing string as described above, the fracturing packer are bi-directional slip structure, including upper slips and lower card
Watt.
Fracturing sand control tubing string as described above, the female thread are that the top of the sand control screen turns down the button of formation outward
Body.
Fracturing sand control tubing string as described above, the sand control screen are cutting seam sieve tube.
Fracturing sand control tubing string as described above, the oil pipe are placed in described sleeve pipe by the tubing hanger at top.
Fracturing sand control tubing string provided in an embodiment of the present invention while taking into account fracturing effect, guarantees the stratum stratum Bu Fantu
Sand and fracturing sand, it can be achieved that pressure break and sand control integration.Due to reducing the flow chart of second completion tripping in sand control pipe,
Complete well cost reduces, while avoiding the problem of second completion repeats stratum cave-in caused by rountrip.Fracturing fluid returns
During row, the sand control screen that reservoir is completely covered prevents from the sand for coming into stratum from returning spitting, ensure that sand controlling result, increase simultaneously
Big oil well area of passage, improves oily capacity of well.By pitching and suppressing operation makes sand control screen play sand control work
With operation is simple and reliable, is easy to control.
Another aspect of the present invention provides a kind of fracturing sand control method, is applied to fracturing sand control tubing string as described above, described
Method includes:
The fracturing sand control tubing string is lowered into reservoir, the fracturing packer is set, and carry out pressure break back-up sand
Operation；
After the completion of pressure break back-up sand operation, the solvable ball of investment in Xiang Suoshu oil pipe, and the oil pipe is carried out to suppress operation,
So that the ball seat drives the sand control screen to move downward, until the female thread is fastened in the limiting slot, sand control screen
Reach target position；
The sand control screen stands 48 hours afterwards in place, the solvable ball dissolution；
Fracturing fluid is returned by the oil pipe and drains into ground；
The fracturing packer is given up by the releasing gadget, the tubing string on the fracturing packer top is detached from.
Fracturing sand control method provided in an embodiment of the present invention while taking into account fracturing effect, guarantees the stratum stratum Bu Fantu
Sand and fracturing sand, it can be achieved that pressure break and sand control integration.Due to reducing the flow chart of second completion tripping in sand control pipe,
Complete well cost reduces, while avoiding the problem of second completion repeats stratum cave-in caused by rountrip.Fracturing fluid returns
During row, the sand control screen that reservoir is completely covered prevents from the sand for coming into stratum from returning spitting, ensure that sand controlling result, increase simultaneously
Big oil well area of passage, improves oily capacity of well.By pitching and suppressing operation makes sand control screen play sand control work
With operation is simple and reliable, is easy to control.
Detailed description of the invention
In order to illustrate more clearly of the present invention or the technical solution of the prior art, embodiment or the prior art will be retouched below
Attached drawing needed in stating is briefly described, it should be apparent that, the accompanying drawings in the following description is of the invention some
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the overall structure diagram before fracturing sand control tubing string operation provided in an embodiment of the present invention；
Fig. 2 is the post-job overall structure diagram of fracturing sand control tubing string provided in an embodiment of the present invention；
Fig. 3 is the bottom end part semi-cutaway before fracturing sand control tubing string operation provided in an embodiment of the present invention；
Fig. 4 is the post-job bottom end part semi-cutaway of fracturing sand control tubing string provided in an embodiment of the present invention；
Fig. 5 is fracturing sand control method flow diagram provided in an embodiment of the present invention.
Appended drawing reference:
1- casing；
11- tubing hanger；
2- oil pipe；
3- fracturing packer；
31- packer upper slips；
32- packer lower slips；
4- sand control screen；
41- female thread；
5- ball seat；
6- limiting device；
61- limiting slot；
7- pipe shoe.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the attached drawing in the present invention, to this
Technical solution in invention is clearly and completely described, it is clear that and described embodiments are some of the embodiments of the present invention,
Instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative labor
Every other embodiment obtained under the premise of dynamic, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, used term " center ", " length ", " width ", " thickness
Degree ", " top ", " bottom end ", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outside" " axis
To ", the indicating positions such as " circumferential direction " or positional relationship be to be based on the orientation or positional relationship shown in the drawings, be merely for convenience of describing
The present invention and simplified description, rather than the position of indication or suggestion meaning or original part must have a particular orientation, with specific
Construction and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is at least two, such as two
It is a, three etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
It shall be understood in a broad sense, such as may be a fixed connection, may be a detachable connection, or be integrally formed；It can be mechanical connection,
It is also possible to be electrically connected or can communicate with each other；It can be directly connected, can also indirectly connected through an intermediary, it can be with
Make the connection inside two elements or the interaction relationship of two elements.For the ordinary skill in the art, may be used
To understand the concrete meaning of above-mentioned term in the present invention as the case may be.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above "
Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of
First feature horizontal height is less than second feature.
Below with reference to the accompanying drawings and in conjunction with specific embodiments the present invention is described.
In the present embodiment, Fig. 1 is the overall structure diagram before fracturing sand control tubing string operation provided in an embodiment of the present invention,
Fig. 2 is the post-job overall structure diagram of fracturing sand control tubing string provided in an embodiment of the present invention, and Fig. 3 mentions for the embodiment of the present invention
Bottom end part semi-cutaway before the fracturing sand control tubing string operation of confession, Fig. 4 are fracturing sand control tubing string provided in an embodiment of the present invention work
Bottom end part semi-cutaway after industry.
Referring to fig. 1 and fig. 2, fracturing sand control tubing string includes casing 1 and the oil pipe 2 that is arranged in inside casing 1, casing 1
Annular space is formed between oil pipe 2, and fracturing packer 3 is provided on oil pipe 2；2 bottom inner portion of oil pipe is arranged with ball seat 5 and prevents
Sand sieve pipe 4, ball seat 5 are threaded in the top of sand control screen 4, and the bottom end of oil pipe 2 is connected with limiting device 6, and limiting device 6
In the lower section of sand control screen 4, the length of sand control screen 4 is 20 to 30 meters bigger than reservoir thickness；The top of sand control screen 4 is provided with mother
41 are detained, is provided with limiting slot 61 in limiting device 6；Wherein, when putting into solvable ball impact ball seat 5, ball seat 5 drives sand control screen
4 move downward, until female thread 41 is fastened in limiting slot 61；Sand control screen 41 in place after, stand 48 hours, the dissolution of solvable ball.
The course of work of fracturing sand control tubing string provided in this embodiment is, first by fracturing sand control tubing string G.I.H, to sit
Fracturing packer 3 is sealed, fracturing work is carried out, in fracturing process, by proppant, that is, fracturing sand as fracturing fluid injects stratum；It is complete
After pressure break back-up sand work, solvable ball is put into oil pipe 2, ball seat 5 drives sand control screen 4 to move downward, until sand control screen 4
The female thread 41 on top is fastened on the limiting slot 61 of limiting device 6；Sand control screen 4 in place after, stand 48 hours, solvable ball is complete
Dissolution；Discharge well head is returned in differential pressure action fracturing liquid；After the row of returning, fracturing packer 3 is given up, on fracturing packer 3
The tubing string in portion is detached from, and can carry out normal flow string tripping in.
After pitching operation, the limiting slot 61 of limiting device 6 and the female thread 41 on 4 top of sand control screen are clamped, and limiting device 6 rises
To the effect of the position of limitation sand control screen 4.Optionally, the structure of limiting device 6 can refer to the common structure for being located pipe nipple and set
It sets.It should be noted that the shape of female thread 41 and limiting slot 61 matches.The cross sectional shape of female thread 41 and limiting slot 61 can be
Rectangle, or right-angled trapezium or isosceles trapezoid.When cross sectional shape is trapezoidal, female thread 41 is easier to be clamped with limiting slot 61.
In the present embodiment, the depth of reservoir and thickness in drilling well it is known that sand control screen 4 needs to be lowered into reservoir position,
And the length of sand control screen 4 is 20 to 30 meters bigger than reservoir thickness, and the length of sand control screen 4 is longer compared with reservoir thickness, guarantees to throw
Reservoir is completely covered in sand control screen 4 after ball operation, to increase the area of passage of oil well, improves capacity of oilwell, guarantees simultaneously
The sand controlling result of sand control screen 4 during fracturing fluid recovery (backflow).
Fracturing sand control tubing string provided in an embodiment of the present invention while taking into account fracturing effect, guarantees the stratum stratum Bu Fantu
Sand and fracturing sand, it can be achieved that pressure break and sand control integration；Due to reducing the flow chart of second completion tripping in sand control pipe,
Complete well cost reduces, while avoiding the problem of second completion repeats stratum cave-in caused by rountrip；Fracturing fluid returns
During row, the sand control screen that reservoir is completely covered prevents from the sand for coming into stratum from returning spitting, ensure that sand controlling result, increase simultaneously
Big oil well area of passage, improves oily capacity of well.
Specific embodiment is used below, and the structure of each component is described in detail.
In the present embodiment, limiting device 6 is threadedly coupled with oil pipe 2, and the pressure-bearing that limiting device 6 is threadedly coupled with oil pipe 2
Ability is greater than fracturing packer 3 and sets and test the pressure that envelope needs.Meanwhile the pressure-bearing energy that limiting device 6 is threadedly coupled with oil pipe 2
Power is greater than the pressure for applying ball seat 5 and sand control screen 4 when falling.Solvable ball is put into ball seat 5, ball seat 5 drives sand screen
It during falling on the position that reservoir is completely covered under pipe 4, needs to suppress into oil pipe 2, so that falling under sand control screen 4 is smooth
Target position.Therefore the bearing capacity that limiting device 6 is threadedly coupled with oil pipe 2, which is greater than, applies sand control screen 4 when falling with ball seat 5
The pressure added, to guarantee not interfering with the connection of limiting device 6 Yu oil pipe 2 when suppressing makes ball seat 5 and sand control screen 4 fall.
In the present embodiment, the bottom end of sand control screen 4 is additionally provided with pipe shoe 7, and the bottom of the side wall of pipe shoe 7 is provided with to downward
The inclined surface stretched, the inclined surface are abutted with limiting device 6.Since the outer diameter of pipe shoe 7 is greater than the internal diameter of limiting device 6, after pitching
Pipe shoe 7 moves downwardly together with sand control screen 4 and ball seat 5, and guiding role is played in the setting of inclined surface, can make pipe shoe 7
It is easier to squeeze into limiting device 6.It should be noted that outwardly extending inclined surface can be set at the top of the inner wall of limiting device 6,
Before pitching work, two inclined surface cooperations are abutted, and the inclined surface of limiting device 6 plays the role of supporting pipe shoe 7；Pitching work
Afterwards, mutually matched inclined surface, so that pipe shoe 7 is easier to squeeze into and by limiting device 6.
Specifically, the tilt angle for the inclined surface that the bottom of the side wall of pipe shoe 7 extends downwardly can be set to 30 ° to 60 °.
Tilt angle is bigger, and guide effect is more obvious, and tilt angle is excessive, supporting stabilizer decline.Therefore, tilt angle setting exists
In the range of 30 ° to 60 °.
In the present embodiment, the outer diameter of pipe shoe 7 is greater than the internal diameter of limiting device 6, and the outer diameter of sand control screen 4 is not less than limit dress
Set 6 internal diameter.Specifically, by limiting device 6 due to the setting of limiting slot 61 and existing minimum diameter is defined as limiting device 6
Internal diameter, the outer diameter of pipe shoe 7 is greater than the internal diameter of limiting device 6, and therefore, before pitching operation, limiting device 6 supports pipe shoe 7, pipe shoe
7 cannot be fallen by the internal diameter of limiting device 6.In addition, the outer diameter of sand control screen 4 is not less than the internal diameter of limiting device 6, sand screen
The diameter of pipe 4 is bigger, it is possible to increase the area of passage of oil well, meanwhile, during ball seat 5 drives sand control screen 4 to fall, sand control
The inner wall of screen casing 4 and limiting device 6, which exists, interferes, and needs to beat by means of making sand control screen 4 fall to suppressing inside oil pipe 2
Press operation is conducive to control the drop-off positions of sand control screen.
In the present embodiment, fracturing packer 3 is internally provided with releasing gadget (not shown), and releasing gadget is insertion
Pipe gingival cyst of mucous gland in the newborn button or conventional left-hand thread structure.It after the completion of fracturing fluid recovery (backflow), needs that fracturing packer 3 is given up by releasing gadget, press
The tubing string for splitting 3 top of packer is detached from, and then can just carry out the tripping in of normal flow string.
During fracturing work, fracturing packer 3 can completely cut off the flowing of the fluid between oil pipe 2 and annular space and pressure
Protection sleeve pipe 1, the non-fractured interval of isolation are played the role of in power transmitting.In the present embodiment, fracturing packer 3 is bi-directional slip knot
Structure, including upper slips 31 and lower slips 32.Bidirectional anchor packer is by rotation tubing string, pushing or above proposes movable mode of operation
It can be realized and set and unseal, it is reliable that the operation is simple and flexible.When upper slips 31 and lower slips 32 are expanded to the inner wall with casing 1
When contact contacts, the packing element of fracturing packer 3 is expanded to, and the annular space between fracturing packer 3 and casing 1 is fully sealed,
Completion is set.After setting, due to 3 bi-directional slip bidirectionally anchoring of fracturing packer, fracturing packer can bear two sides up and down
To load, anchoring is reliable, and oil pipe can effectively be overcome to wriggle up and down, improves oil recovery efficiency.
In the present embodiment, female thread 41 is that the top of sand control screen 4 turns down the button of formation outward.It should be noted that mother
The shape of button 41 and limiting slot 61 matches.
Sand control screen 4 in the present embodiment is cutting seam sieve tube.It is cut with fine crack on the tube body of cutting seam sieve tube, is used for stratum
Sand gear realizes sand control except screen casing, and structure is simple, at low cost.Sand control screen 4 or other kinds of screen casing, for example, it is swollen
Swollen screen casing etc..
In the present embodiment, oil pipe 2 is placed in casing 1 by the boll-weevil hanger 11 at top.Boll-weevil hanger 11 is branch
It holds oil pipe 2 and seals the device of the annular space between oil pipe 1 and casing 2.Boll-weevil hanger 11 is realized using the gravity of oil pipe 2
Sealing, convenient for operation, securely and reliably.
Fracturing sand control tubing string provided in an embodiment of the present invention while taking into account fracturing effect, guarantees the stratum stratum Bu Fantu
Sand and fracturing sand, it can be achieved that pressure break and sand control integration；Due to reducing the flow chart of second completion tripping in sand control pipe,
Complete well cost reduces, while avoiding the problem of second completion repeats stratum cave-in caused by rountrip；Fracturing fluid returns
During row, the sand control screen that reservoir is completely covered prevents from the sand for coming into stratum from returning spitting, ensure that sand controlling result, increase simultaneously
Big oil well area of passage, improves oily capacity of well.
Another embodiment of the present invention provides a kind of fracturing sand control method, is applied to fracturing sand control tubing string as described above,
Fig. 5 is fracturing sand control method flow diagram provided in an embodiment of the present invention, and referring to Figure 5, which includes:
S101, the fracturing sand control tubing string is lowered into reservoir, the fracturing packer is set, and carry out pressure break
Back-up sand operation；
Specifically, pressure break back-up sand operation includes injecting fracturing fluid into oil pipe 2, make downhole formation generate crack, continue by
Proppant, that is, fracturing sand injects crack with fracturing fluid, and proppant plays the role of supporting crack, and stress is not discharged and is closed,
To keep high flow conductivity, keep oil gas unimpeded.
S102, after the completion of pressure break back-up sand operation, the solvable ball of investment in Xiang Suoshu oil pipe, and the oil pipe is suppressed
Operation, so that the ball seat drives the sand control screen to move downward, until the female thread is fastened in the limiting slot, sand control
Screen casing reaches target position；
S103, the sand control screen stand 48 hours afterwards in place, the solvable ball dissolution；
Before pitching operation, the state of fracturing sand control tubing string is as shown in figures 1 and 3, is lining in oil in sand control screen 4 and ball seat 5
In pipe 2, it is located at 6 top of limiting device.Pitching operation simultaneously carries out after suppressing operation, the state of fracturing sand control tubing string such as Fig. 2 and Fig. 4
Shown, sand control screen 4 and ball seat 5 fall, and are located at 6 lower section of limiting device, and sand control screen 4 stands 48 hours afterwards in place, solvable ball
Dissolution.The female thread 41 on 4 top of sand control screen and the limiting slot 61 of limiting device 6 are clamped, and limiting device 6 not only limits sand screen
The drop-off positions of pipe 4, also limitation sand control screen 4 cannot move upwards.When ball seat 5 drives sand control screen 4 to move downward, due to anti-
The outer diameter of sand sieve pipe 4 and pipe shoe 7 is greater than the internal diameter of limiting device 6, needs to apply pressure, so that sand control screen 4 and pipe shoe 7 are squeezed into
And smoothly squeeze through limiting device 6.
S104, fracturing fluid are returned by the oil pipe drains into ground；
Under the action of well internal and external pressure difference, fracturing fluid returns discharge well head by oil pipe 2, during the row of returning, sand control screen 4
It cannot be moved up under the action of limiting device 6, play the role of preventing fracturing sand from entering pit shaft.
S105, the fracturing packer is given up by releasing gadget, the tubing string on the fracturing packer top is detached from.
Oil pipe 2 and packer 3 can be realized by insertion tube gingival cyst of mucous gland in the newborn button inside fracturing packer 3 or conventional left-hand thread structure
Separation, the tubing string on 3 top of fracturing packer is detached from after giving up, and can carry out normal oil/gas well flow string tripping in.Prevent lower part
Sand sieve pipe 4 stays in underground, and the later period, which needs replacing machine, which adopts tubing string not, influences the operation of sand control screen 4.
Fracturing sand control method provided in an embodiment of the present invention while taking into account fracturing effect, guarantees the stratum stratum Bu Fantu
Sand and fracturing sand, it can be achieved that pressure break and sand control integration.Due to reducing the flow chart of second completion tripping in sand control pipe,
Complete well cost reduces, while avoiding the problem of second completion repeats stratum cave-in caused by rountrip.Fracturing fluid returns
During row, the sand control screen that reservoir is completely covered prevents from the sand for coming into stratum from returning spitting, ensure that sand controlling result, increase simultaneously
Big oil well area of passage, improves oily capacity of well.By pitching and suppressing operation makes sand control screen play sand control work
With operation is simple and reliable, is easy to control.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of fracturing sand control tubing string, including casing and the oil pipe being arranged in inside described sleeve pipe, described sleeve pipe and the oil pipe
Between form annular space, be provided with fracturing packer on the oil pipe, which is characterized in that
The oil pipe bottom inner portion is arranged with ball seat and sand control screen, and the ball seat is threaded in the upper of the sand control screen
Portion, the bottom end of the oil pipe are connected with limiting device, and the limiting device is located at the lower section of the sand control screen, the sand screen
The length of pipe is 20 to 30 meters bigger than reservoir thickness；
The top of the sand control screen is provided with female thread, is provided with limiting slot in the limiting device；
Wherein, when putting into the solvable ball impact ball seat, the ball seat drives the sand control screen to move downward, until described
Female thread is fastened in the limiting slot；The sand control screen in place after, stand 48 hours, the solvable ball dissolution.
2. tubing string according to claim 1, which is characterized in that the limiting device is connect with the tubing round thread.
3. tubing string according to claim 2, which is characterized in that the bottom end of the sand control screen is additionally provided with pipe shoe, described
The bottom of the side wall of pipe shoe is provided with the inclined surface extended downwardly, and the inclined surface is abutted with the limiting device.
4. tubing string according to claim 3, which is characterized in that the outer diameter of the pipe shoe is greater than the interior of the limiting device
Diameter, the outer diameter of the sand control screen are not less than the internal diameter of the limiting device.
5. tubing string according to claim 1, which is characterized in that the fracturing packer is internally provided with releasing gadget,
The releasing gadget is insertion tube gingival cyst of mucous gland in the newborn button or conventional left-hand thread structure.
6. tubing string according to claim 5, which is characterized in that the fracturing packer is bi-directional slip structure, including upper
Slips and lower slips.
7. tubing string according to claim 1, which is characterized in that the female thread is that the top of the sand control screen turns down outward
The button of formation.
8. tubing string according to claim 1, which is characterized in that the sand control screen is cutting seam sieve tube.
9. tubing string according to claim 1, which is characterized in that the oil pipe is placed in the set by the tubing hanger at top
In pipe.
10. a kind of fracturing sand control method, which is characterized in that be applied to fracturing sand control pipe as described in any one of claim 1 to 9
Column, which comprises
The fracturing sand control tubing string is lowered into reservoir, the fracturing packer is set, and carries out pressure break back-up sand operation；
After the completion of pressure break back-up sand operation, the solvable ball of investment in Xiang Suoshu oil pipe, and the oil pipe is carried out to suppress operation, so that
The ball seat drives the sand control screen to move downward, until the female thread is fastened in the limiting slot, sand control screen is reached
Target position；
The sand control screen stands 48 hours afterwards in place, the solvable ball dissolution；
Fracturing fluid is returned by the oil pipe and drains into ground；
The fracturing packer is given up by the releasing gadget, the tubing string on the fracturing packer top is detached from.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711428032.1A CN109958417B (en) | 2017-12-26 | 2017-12-26 | Fracturing sand control pipe column and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711428032.1A CN109958417B (en) | 2017-12-26 | 2017-12-26 | Fracturing sand control pipe column and method |
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| CN109958417A true CN109958417A (en) | 2019-07-02 |
| CN109958417B CN109958417B (en) | 2024-05-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111088973A (en) * | 2020-01-10 | 2020-05-01 | 新疆恒智伟业石油工程技术开发有限公司 | Multifunctional fracturing well completion pipe string and process for high-temperature and high-pressure oil and gas well |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040188093A1 (en) * | 2003-03-24 | 2004-09-30 | Funchess Thomas A. | One trip completion process |
| US20090139717A1 (en) * | 2007-12-03 | 2009-06-04 | Richard Bennett M | Multi-Position Valves for Fracturing and Sand Control and Associated Completion Methods |
| CN201610748U (en) * | 2009-11-03 | 2010-10-20 | 长沙市罡拓能源科技有限公司 | Ball throwing-type sliding sleeve screen pipe device |
| CN202882862U (en) * | 2012-10-24 | 2013-04-17 | 中国石油化工股份有限公司 | Underground sand prevention tubular column capable of enabling well backwashing and sand washing and high-pressure gravel packing to be achieved |
| CN203463085U (en) * | 2013-07-18 | 2014-03-05 | 中国石油化工股份有限公司 | Sand filling tool capable of opening and closing filling channel quickly |
| CN204252969U (en) * | 2014-10-28 | 2015-04-08 | 中国石油天然气股份有限公司 | Sand control pipe and flow string |
| CN207795212U (en) * | 2017-12-26 | 2018-08-31 | 中国石油天然气股份有限公司 | Fracturing sand control tubing string |
-
2017
- 2017-12-26 CN CN201711428032.1A patent/CN109958417B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040188093A1 (en) * | 2003-03-24 | 2004-09-30 | Funchess Thomas A. | One trip completion process |
| US20090139717A1 (en) * | 2007-12-03 | 2009-06-04 | Richard Bennett M | Multi-Position Valves for Fracturing and Sand Control and Associated Completion Methods |
| CN201610748U (en) * | 2009-11-03 | 2010-10-20 | 长沙市罡拓能源科技有限公司 | Ball throwing-type sliding sleeve screen pipe device |
| CN202882862U (en) * | 2012-10-24 | 2013-04-17 | 中国石油化工股份有限公司 | Underground sand prevention tubular column capable of enabling well backwashing and sand washing and high-pressure gravel packing to be achieved |
| CN203463085U (en) * | 2013-07-18 | 2014-03-05 | 中国石油化工股份有限公司 | Sand filling tool capable of opening and closing filling channel quickly |
| CN204252969U (en) * | 2014-10-28 | 2015-04-08 | 中国石油天然气股份有限公司 | Sand control pipe and flow string |
| CN207795212U (en) * | 2017-12-26 | 2018-08-31 | 中国石油天然气股份有限公司 | Fracturing sand control tubing string |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111088973A (en) * | 2020-01-10 | 2020-05-01 | 新疆恒智伟业石油工程技术开发有限公司 | Multifunctional fracturing well completion pipe string and process for high-temperature and high-pressure oil and gas well |
| CN111088973B (en) * | 2020-01-10 | 2023-07-07 | 新疆恒智伟业石油工程技术开发有限公司 | Multifunctional fracturing completion pipe string and process for high-temperature high-pressure oil-gas well |
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| Publication number | Publication date |
|---|---|
| CN109958417B (en) | 2024-05-28 |
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