CN102337862B - Variable-diameter fracturing valve - Google Patents
Variable-diameter fracturing valve Download PDFInfo
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- CN102337862B CN102337862B CN201110314426.0A CN201110314426A CN102337862B CN 102337862 B CN102337862 B CN 102337862B CN 201110314426 A CN201110314426 A CN 201110314426A CN 102337862 B CN102337862 B CN 102337862B
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Abstract
The invention relates to a variable-diameter fracturing valve, which is applied to modification construction of oil gas field fracturing. An upper pressure transmitting joint is fixed on the top of an upper pressure transmitting channel; an upper joint is provided with an axial fracturing channel, and an outer sliding sleeve and an inner sliding sleeve are arranged in the upper joint; the lower end of the upper joint is connected with a cylinder sleeve; an upper connecting cylinder is sleeved in the cylinder sleeve; a guide sleeve is sleeved in the upper connecting cylinder; the upper connecting cylinder is connected with the guide sleeve through a shearing pin; a supporting seat is in threaded connection with the upper connecting cylinder; the supporting seat is arranged in the upper connecting cylinder; a variable-diameter ball seat is arranged in the supporting seat; the cylinder sleeve is in threaded connection with a lower pressure transmitting body; the upper end of the lower pressure transmitting body is connected with a lower connecting cylinder; the lower pressure transmitting body is provided with a lower pressure transmitting channel, and the lower end of the lower pressure transmitting channel is provided with a lower pressure transmitting joint; and the lower end of the lower pressure transmitting body is connected with a lower joint. The variable-diameter fracturing valve has the effects that: the variable-diameter ball seat is drawn down sequentially to form a ball seat in the fracturing process; sealing balls with the same diameter are input repeatedly, and the fracturing valve is opened to sequentially complete fracturing repeatedly; and the variable-diameter fracturing valve is not limited by a borehole diameter and realizes unlimited section fracturing construction of laying down a row of pipe columns.
Description
Technical field
The present invention relates to oil-gas field fracturing rebuilding construction technical field, particularly a kind of fracturing valve, is a kind of variable-diameter fracturing valve that is applicable to oil gas field multi-section multi-layer fracturing reform.
Background technology
At present, main cable perforation, mechanical packer separate stratum fracfturing and the hydraulic jet perforation separate stratum fracfturing technology of adopting of oil field at home cased well multiple fracturing transformation, the isolation that all ball sealer of the ascending different size of employing throwing completes the unlatching of each layer of sliding sleeve (spray apparatus) and transformed layer, but owing to being subject to the restriction of well head, pit shaft, operating tool string, tool design size etc., even by technique, instrument continue to optimize and perfect, also only can complete the separate stratum fracfturing transformation of the limited number of plies.
Along with the development of oil gas field, above technology can not meet the transformation needs of more multi-layered number.Therefore, in order to improve pressure break hop count, develop a kind of fracturing valve of not limitting progression, can realize and not limit progression separate stratum fracfturing transformation, there is good development prospect.Be lowered to fracturing valve together with sleeve pipe, during pressure break, first perforation first floor pressure break, open fluid passage be provided for first order fracturing valve.Then drop into ball sealer, open first order fracturing valve shutoff construction layer, meanwhile, operation pressure makes upper level reducing ball seat undergauge by pressure guiding pipeline, forms ball seat, the pressure break second layer; Complete successively multilayer transformation.Chinese Patent Application No. 201020187726 provides a kind of ball seat type fracturing slide sleeve, relates to oil well staged fracturing liquid conversion control device technical field.It comprises top connection, splicing sleeve, sliding sleeve pipe, split ring, ball seat and lower contact.Have the operational pressure of unlatching low, ball seat does not fall into shaft bottom, the advantage that can not impact to construction in later period operation.This technological deficiency is the restriction that sliding sleeve size is increased by ball size step by step, can only realize the separate zone stimulation of finite progression; Fracturing sliding bush in lower going-into-well, need to carry out perforation together with oil pipe, then pressure break, and construction sequence is many.Chinese Patent Application No. ZL200820123843.0 provides a kind of fracture used high-pressure sand blast sliding sleeve, and fracture used high-pressure sand blast sliding sleeve is fixed in layered fracturing pipe string, suppresses to realize open flank passage by pitching, completes between oil jacket and links up.This simple in structure, quick detachable and assembling.Being applicable to oil machinery looks in the operations such as water blockoff, minute (choosing) lamination split, acidifying.This technological deficiency is the restriction that sliding sleeve size is increased by ball size step by step equally, cannot realize the separate zone stimulation of infinite series, cannot meet the growth requirement of current oil gas field.
Summary of the invention
The object of the invention is: a kind of variable-diameter fracturing valve is provided, is connected on tubing string, can realize the separate stratum fracfturing transformation of not limitting progression, meet the needs of oil gas field multistage fracturing reform.In fracturing process variable-diameter fracturing valve place successively reducing form ball seat, can repeatedly drop into the ball sealer of same diameter, open fracturing valve and complete successively repeatedly pressure break, be not subject to the restriction of hole diameter, can realize and be lowered to infinitely section pressing crack construction of one-trip string.The restriction that fracturing valve inner sliding sleeve size is increased by ball sealer no longer step by step, realizes the latus rectums such as whole tubing string.Drop into the ball sealer of same diameter, realize the separate stratum fracfturing transformation of not limitting progression.
The technical solution used in the present invention is: variable-diameter fracturing valve, comprises pressure-transmitting joint, uploads pressure passageway, top connection, fluid hole, outer sliding sleeve, inner sliding sleeve, inlet opening, shear pin, fairlead, lock ring, cylinder sleeve, upper connecting cylinder, reducing ball seat, supporting seat, pressure break passage, lower connecting cylinder, lower pressure transmission passage, lower pressure transmission body, lower pressure-transmitting joint and lower contact; It is characterized in that: the upper end centre bore of top connection has internal thread, can be connected on pressure break casing string.In top connection upper end wall, there is an axial pressure passageway of uploading, upload the upper end of pressure passageway and the centre bore of upper pressure-transmitting joint is communicated with; Upload the lower end of pressure passageway and the centre bore of top connection is communicated with.There is external screw thread upper pressure-transmitting joint lower end, and upper pressure-transmitting joint screw thread is fixedly uploaded pressure passageway top, and there is internal thread upper pressure-transmitting joint upper end, can connect pressure guiding pipeline; On top connection outer wall, be evenly equipped with the pressure break passage of three axial long troughs, in top connection, there is outer sliding sleeve, outer sliding sleeve inner sleeve has inner sliding sleeve, outer sliding sleeve and inner sliding sleeve are cylindrical shape, between outer sliding sleeve and inner sliding sleeve, there is annular space chamber, outer sliding sleeve and inner sliding sleeve are integrally welded, have a radially fluid hole on outer sliding sleeve wall, in the upper and lower both sides of fluid hole and there is " O " RunddichtringO on outer sliding sleeve outer wall.Fluid hole inner with interior outer sliding sleeve between annular chamber is communicated with, fluid hole outer end and upload pressure passageway lower ending opening to right, and connection with it; Outer sliding sleeve and inner sliding sleeve can slide along top connection inwall, and outer sliding sleeve and inner sliding sleeve block pressure break passage.Outer sliding sleeve and inner sliding sleeve down sliding can be opened pressure break passage, link up stratum, can carry out pressing crack construction.In the time of outer sliding sleeve and inner sliding sleeve down sliding, opened and uploaded pressure passageway, highly pressurised liquid, by uploading pressure passageway, reaches upper level variable-diameter fracturing valve by pressure guiding pipeline, for upper level variable-diameter fracturing valve pressing crack construction is prepared.
There is external screw thread the lower end of top connection, is connected with a columnar cylinder sleeve in the lower end of top connection; In cylinder sleeve inner sleeve, there is connecting cylinder on, between upper connecting cylinder and cylinder sleeve, have annular space chamber; There is internal thread upper connecting cylinder upper end, and there is external screw thread outer sliding sleeve lower end, and outer sliding sleeve lower end is threaded with upper connecting cylinder upper end.In upper connecting cylinder inner sleeve, have fairlead, the outer wall of fairlead is stairstepping, and fairlead top smaller diameter end is enclosed within on the inwall of outer sliding sleeve, has " O " RunddichtringO between fairlead and outer sliding sleeve; The annular step surface of fairlead is the upper surface of piston; On upper connection barrel, have inlet opening radially, inlet opening be positioned at piston upper surface; Between upper connecting cylinder and fairlead, by shear pin, link together, in the bottom of shear pin and there is " O " RunddichtringO between fairlead and upper connecting cylinder; Next stage is caught the piston upper surface that the high pressure liquid physical efficiency of coming reaches inlet opening by the annular space chamber between upper connecting cylinder and cylinder sleeve and arrives fairlead, when pressure rises to the shear strength of shear pin, shear pin is cut off, and fairlead is along at upper connecting cylinder inwall down sliding.Meanwhile, fairlead drives lock ring along the downward stepping of tooth-shaped buckle on upper connecting cylinder inwall.
On upper connecting cylinder inwall, have screw thread, supporting seat is threaded with upper connecting cylinder, and described supporting seat is cylindrical shape, and supporting seat is in upper connecting cylinder; The upper end centre bore of supporting seat has two place's undergauges, and undergauge place is by taper seat transition; On the taper seat on top, there is a reducing ball seat; Fairlead lower end is enclosed within supporting seat, and fairlead outer wall and supporting seat inwall are slidably matched; And the lower surface of fairlead contacts with the upper surface of reducing ball seat; Described reducing ball seat be shaped as an annular jaggy, there is outer conical surface the lower end of reducing ball seat, reducing ball seat lower end outer conical surface is identical with the angle of the supporting seat upper end transition circle conical surface; When fairlead down sliding, promote reducing ball seat along the upper taper seat down sliding of supporting seat, the breach of reducing ball seat is closed, and internal diameter diminishes, and forms ball seat; The ball sealer energy seat dropping into from well head is in reducing ball seat Shang， shutoff lower floor.
There is internal thread the lower end of cylinder sleeve, the lower pressure transmission body of the annular that is threaded in the lower end of cylinder sleeve; The lower contact that has been threaded of lower pressure transmission body centre bore lower end, there is external screw thread lower contact lower end, can be connected on pressure break casing string; Lower connecting cylinder is cylindrical shape, and lower connecting cylinder lower end is enclosed within uploads laminate Nei， upper end and be enclosed between connecting cylinder lower end and supporting seat, between the upper end outer wall of lower connecting cylinder and upper connecting cylinder lower end inwall, has " O " RunddichtringO; Between the upper end inwall of lower connecting cylinder and supporting seat lower end outer wall, there is " O " RunddichtringO; Upper connecting cylinder can slide between cylinder sleeve and lower connecting cylinder.Between inboard wall of cylinder liner and lower connecting cylinder outer wall, there is an annular pressure transmission chamber; On lower pressure transmission body lower end wall, have an axial lower pressure transmission passage, the upper end of lower pressure transmission passage is communicated with the annular pressure transmission chamber between cylinder sleeve and lower connecting cylinder.There is internal thread lower pressure transmission passage lower end, and in lower pressure transmission passage lower end, screw thread is fixed with a lower pressure-transmitting joint; There is screw thread lower pressure-transmitting joint centre bore lower end, can connect pressure guiding pipeline.
In order to reduce pressing crack construction risk, make can be fixed in connecting cylinder after fairlead down sliding, by established ball seat locking.Between upper connecting cylinder inwall and fairlead, there is lock ring groove, in lock ring groove, have the lock ring of unidirectional stepping.Lock ring is annular, inner and outer wall all has unidirectional stepping button, and the opposite direction of unidirectional stepping button, the tooth form of lock ring outer wall can only be along the downward stepping of internal thread groove of upper connecting cylinder, and can not upwards exit, the tooth form of lock ring inwall is connected with the external screw thread groove of fairlead, and fairlead can not the downward stepping along the tooth form of lock ring inwall.When fairlead is promoted by piston force, fairlead can only drive lock ring along the downward stepping of tooth-shaped buckle of upper connecting cylinder inwall, promotes the path that reducing ball seat enters supporting seat, form ball seat, there is mutual self-locking in fairlead and upper connecting cylinder, fairlead can not move up, and causes ball seat to form and lost efficacy.
In order to realize down-hole string full-bore, reducing ball seat of the present invention adopts aluminum alloy materials, easily bores.Brill grinds off after reducing ball seat, can realize downhole pipeline full-bore, is beneficial to later stage operation.
The operating principle of summary variable-diameter fracturing valve: consult Fig. 1 and Fig. 2.When variable-diameter fracturing valve is gone into the well, multistage variable footpath fracturing valve is threaded onto on fracturing string, and is connected a pressure guiding pipeline between the lower pressure-transmitting joint 20 of next stage variable-diameter fracturing valve and the upper pressure-transmitting joint 1 of upper level.With clip, pressure guiding pipeline is stuck on casing wall.
When certain one-level variable-diameter fracturing valve carries out pressure break, the highly pressurised liquid that the pressure guiding pipeline that lower pressure-transmitting joint 20 connects transmits enters lower pressure transmission passage 18 by lower pressure-transmitting joint 20, and enter between cylinder sleeve 12, upper connecting cylinder 13 and lower connecting cylinder 17 the annular space chamber forming, and enter inlet opening 7, liquid arrives the piston upper surface of fairlead 10, under the downward thrust producing at hydraulic pressure, cutting off pin 8 cuts off, fairlead 10 down slidings, rely on lock ring 11 and the mutual self-locking of upper connecting cylinder 13, fairlead 10 can only move downward and can not move round about.Fairlead 10 promotes reducing ball seat 14 downwards, reducing ball seat 14 is pressed into the path of supporting seat 15, and reducing ball seat 14 radially dwindles breach closure simultaneously, and reducing ball seat 14 forms ball seats.Once ball seat forms, reducing ball seat 14 just can not move up again.From well head, drop into ball sealer, ball sealer drops to reducing ball seat 14 places that radially dwindle and is hampered, shutoff lower floor.Now, continue to build the pressure in sleeve pipe, the fluid pressure in sleeve pipe promotes supporting seat 15, and drives upper connecting cylinder 13, outer sliding sleeve 5 and inner sliding sleeve 6 together to move down.When the top of outer sliding sleeve 5 and inner sliding sleeve 6 slides into pressure break passage below 16, the pressure break passage 16 of top connection 3 makes the inside and outside connection of sleeve pipe.The highly pressurised liquid injecting from well head enters stratum from pressure break passage 16 and realizes fracturing work.
Between the lower pressure-transmitting joint 20 of the upper pressure-transmitting joint 1 of certain one-level variable-diameter fracturing valve and adjacent upper level variable-diameter fracturing valve, by pressure guiding pipeline, be communicated with.When certain one-level variable-diameter fracturing valve carries out pressure break, outer sliding sleeve 5 and inner sliding sleeve 6 together move down.When being moved down into, the upper surface of outer sliding sleeve 5 and inner sliding sleeve 6 uploads pressure passageway 2 lower ends, uploading pressure passageway 2 is communicated with top connection 3 centre bores, highly pressurised liquid enters pressure-transmitting joint 1 from uploading pressure passageway 2, through pressure guiding pipeline, pressure is reached to the lower pressure-transmitting joint 20 of upper level variable-diameter fracturing valve, highly pressurised liquid enters the lower pressure transmission passage 18 of upper level.Through the upper connecting cylinder 13 of upper level and the annular space chamber between cylinder sleeve 12, enter the inlet opening 7 of upper level, arrive the piston upper surface of fairlead 10, until pressure rises to the shearing force of shear pin 8, the shear pin pin 8 of upper level is cut off, and the fairlead 10 of upper level moves down the upper cone face along supporting seat 15 by upper level reducing ball seat 14, advances the path of the supporting seat 15 of upper level, the ball seat of upper level variable-diameter fracturing valve forms, for upper level pitching pressure break ready.
For another set of pressure transmission mechanism is set, ensure pressure transmission success rate, between outer sliding sleeve 5 and inner sliding sleeve 6, there is an annular space cavity.When interior outer sliding sleeve is opened unsuccessfully, can adopt perforating gun perforation on inner sliding sleeve 6 walls, highly pressurised liquid enters outer sliding sleeve 5 and inner sliding sleeve 6 annular space chamber by hole enters and uploads pressure passageway 2 from fluid hole 4, and pressure is passed to upper pressure-transmitting joint 1, and reaches upper level variable-diameter fracturing valve by pressure guiding pipeline.With perforating gun perforation on inner sliding sleeve 6 walls, those skilled in the art can complete.
Beneficial effect of the present invention: invention variable-diameter fracturing valve, can realize the separate stratum fracfturing transformation of not limitting progression, meet the needs of oil gas field multistage fracturing reform.The restriction that fracturing valve inner sliding sleeve size is increased by ball sealer no longer step by step, realizes the latus rectums such as whole tubing string.Like this, drop into the ball sealer of same specification, can realize the separate zone stimulation of not limitting progression.
Accompanying drawing explanation
Fig. 1 is variable-diameter fracturing valve the first half structural profile schematic diagram of the present invention.
Fig. 2 is variable-diameter fracturing valve the latter half structural profile schematic diagram of the present invention.
Fig. 3 is the A-A generalized section of Fig. 1.
In figure, 1. go up pressure-transmitting joint, 2. upload pressure passageway, 3. top connection, 4. fluid hole, 5. outer sliding sleeve, 6. inner sliding sleeve, 7. inlet opening, 8. shear pin, 9.0 RunddichtringOs, 10. fairlead, 11. lock rings, 12. cylinder sleeves, connecting cylinder on 13., 14. reducing ball seats, 15. supporting seats, 16. pressure break passages, 17. times connecting cylinders, 18 pressure transmission passages, 19. times pressure transmission bodies, 20. times pressure-transmitting joints, 21. lower contacts.
The specific embodiment
Embodiment 1: the variable-diameter fracturing valve of take is example, and the present invention is described in further detail.
Consult Fig. 1.Variable-diameter fracturing valve of the present invention, comprises pressure transmitting head 1, uploads pressure passageway 2, top connection 3, fluid hole 4, outer sliding sleeve 5, inner sliding sleeve 6, inlet opening 7, shear pin 8, fairlead 10, lock ring 11, cylinder sleeve 12, upper connecting cylinder 13, reducing ball seat 14, supporting seat 15, pressure break passage 16, lower connecting cylinder 17, lower pressure transmission passage 18, lower pressure transmission body 19, lower pressure-transmitting joint 20 and lower contact 21.
There is internal thread the centre bore upper end of top connection 3, can be connected on pressure break casing string; In top connection 3 upper end wall, have an axial pressure passageway 2 of uploading, the passage internal diameter of uploading pressure passageway 2 is 5mm, long 158mm, and the upper end of uploading pressure passageway 2 is communicated with the centre bore of upper pressure-transmitting joint 1; The lower end of uploading pressure passageway (2) is communicated with the centre bore of top connection (3); There is external screw thread upper pressure-transmitting joint 1 lower end, by screw thread, is fixed on and is uploaded pressure passageway 2 tops, and there is internal thread upper pressure-transmitting joint 1 upper end, can connect pressure guiding pipeline; On top connection 3 outer walls, be evenly equipped with the pressure break passage 16 of three axial long troughs, the long 140mm of pressure break passage 16, wide 10mm.In top connection 3, there is outer sliding sleeve 5, outer sliding sleeve 5 inner sleeves have inner sliding sleeve 6, outer sliding sleeve 5 and inner sliding sleeve 6 are cylindrical shape, outer sliding sleeve 5 external diameter 140mm, inner sliding sleeve internal diameter 97mm, has the annular space chamber of wide 2mm between outer sliding sleeve 5 and inner sliding sleeve 6, outer sliding sleeve 5 is integrally welded with inner sliding sleeve 6, on outer sliding sleeve 5 walls, have a radially fluid hole 4, the diameter of fluid hole 4 is 4mm, and at fluid hole, Shang Xia 4 both sides have " O " RunddichtringO on outer sliding sleeve 5 outer walls.Fluid hole 4 inner with interior outer sliding sleeve between annular chamber be communicated with, fluid hole 4 outer ends are with to upload pressure passageway 2 lower ending openings relative, and connection with it; Outer sliding sleeve 5 can slide along top connection 3 inwalls with inner sliding sleeve 6, outer sliding sleeve 5 and inner sliding sleeve 6 shutoff pressure break passages 16.
There is external screw thread the lower end of top connection 3, is connected with a columnar cylinder sleeve 12 in the lower end of top connection 3; In cylinder sleeve 12 inner sleeves, have connecting cylinder 13 on, between upper connecting cylinder 13 and cylinder sleeve 12, have annular space chamber, the high pressure liquid physical efficiency of next stage reaches inlet opening 7 by annular space cavity and arrives the piston upper surface of fairlead 10, promotes fairlead 10 and moves down; There is internal thread upper connecting cylinder 13 upper ends, and there is external screw thread outer sliding sleeve 5 lower ends, and outer sliding sleeve 5 lower ends are threaded with upper connecting cylinder 13 upper ends.In upper connecting cylinder 13 inner sleeves, there is a fairlead 10, fairlead 10 internal diameter 97mm, the outer wall of fairlead 10 is stairstepping, fairlead 10 top smaller diameter end are enclosed within on the inwall of outer sliding sleeve 5, have " O " RunddichtringO between fairlead 10 and outer sliding sleeve 5; The annular step surface of fairlead 10 is upper surfaces of piston; On upper connecting cylinder 13 walls, have inlet opening 7 radially, inlet opening 7 diameters are 4mm, and the position of inlet opening 7, on the top of the annular step of fairlead 10, is positioned at the upper surface of piston; Between upper connecting cylinder 13 and fairlead 10, by four equally distributed shear pins 8, link together, the diameter of shear pin 8 is 8mm, and material is No. 45 steel.In the bottom of shear pin 8 and there is " O " RunddichtringO 9 between fairlead 10 and upper connecting cylinder 13;
On upper connecting cylinder 13 inwalls, have screw thread, supporting seat 15 is threaded with upper connecting cylinder 13, and described supporting seat 15 is cylindrical shape, and supporting seat 15 is in upper connecting cylinder 13; Supporting seat 15 upper end centre bore has two place's undergauges, i.e. stepped central hole, and supporting seat 15 upper end centre bore internal diameters are transitioned into the Zhongdao 96mm of 108mm by 115mm, have between the centre bore of undergauge by taper seat transition.On the taper seat on top, there is a reducing ball seat 14; Fairlead 10 lower ends are in supporting seat 15, and fairlead 10 outer walls and supporting seat 15 inwalls are slidably matched, and fairlead 10 lower surface contacts with reducing ball seat 14 upper surface.During fairlead 10 down sliding, promote reducing ball seat 14 and enter undergauge hole, top along taper seat on supporting seat 15, reducing ball seat 14 breach are closed, the ball seat that to form internal diameter be 89mm, and undergauge hole, supporting seat 15 bottom provides location for reducing ball seat 14.The ball sealer diameter dropping into from well head is that 92mm sets in ball seat Shang， shutoff lower floor.Ball sealer adopts aluminum alloy materials to make.Described reducing ball seat 14 is an annulus jaggy, and there is outer conical surface reducing ball seat 14 lower end, and the outer conical surface of reducing ball seat 14 lower ends is identical with the angle of the supporting seat 15 transition circle conical surfaces.Consult Fig. 3.The external diameter of reducing ball seat 14 is 115mm, and internal diameter is 96mm, the wide 22mm of breach, and reducing ball seat 14 adopts aluminum alloy materials to make.Consult Fig. 1.Between upper connecting cylinder 13 inwalls and fairlead 10, there is a lock ring groove, in lock ring groove, have the lock ring 11 of unidirectional stepping.Lock ring 11 is annular, and lock ring 11 length are 20mm, wall thickness 7mm.Inner and outer wall all has unidirectional stepping button, and opposite direction.
Consult Fig. 2.There is internal thread cylinder sleeve 12 lower end, the lower pressure transmission body 19 of the annular that is threaded in cylinder sleeve 12 lower end; There is internal thread lower pressure transmission body 19 centre bore lower ends, the cylindrical shape lower contact 21 that has been threaded of lower pressure transmission body 19 centre bore lower ends, and there is external screw thread lower contact 21 lower ends, can be connected on pressure break casing string; Connecting cylinder 17 is cylindrical shape, lower connecting cylinder 17 lower ends are enclosed within lower pressure transmission body 19, upper end is between upper connecting cylinder 13 lower end and supporting seat 15, between lower connecting cylinder 17 upper end outer wall and upper connecting cylinder 13 lower end inwalls, there is " O " RunddichtringO, between lower connecting cylinder 17 upper end inwall and supporting seat 15 lower end outer walls, have " O " RunddichtringO; Between cylinder sleeve 12 inwalls and lower connecting cylinder 17 outer walls, there is an annular pressure transmission chamber; On lower pressure transmission body 19 lower end walls, have an axial lower pressure transmission passage 18, the internal diameter of lower pressure transmission passage 18 is 5mm, long 158mm.Lower pressure transmission passage 18 upper end is communicated with the annular pressure transmission chamber between cylinder sleeve 12 and lower connecting cylinder 17.There is internal thread lower pressure transmission passage 18 lower ends, at lower pressure transmission passage 18 lower end screw threads, are fixed with a lower pressure-transmitting joint 20; There is internal thread lower pressure-transmitting joint 20 lower ends.Can connect pressure guiding pipeline, the external diameter 8mm of pressure guiding pipeline, internal diameter 4mm.
Claims (3)
1. a variable-diameter fracturing valve, comprises pressure-transmitting joint (1), uploads pressure passageway (2), top connection (3), radially fluid hole (4), outer sliding sleeve (5), inner sliding sleeve (6), inlet opening (7), shear pin (8), fairlead (10), lock ring (11), cylinder sleeve (12), upper connecting cylinder (13), reducing ball seat (14), supporting seat (15), pressure break passage (16), lower connecting cylinder (17), lower pressure transmission passage (18), lower pressure transmission body (19), lower pressure-transmitting joint (20) and lower contact (21); It is characterized in that: the upper end centre bore of top connection (3) has internal thread; On top connection (3) upper end wall axial direction, upload pressure passageway (2), the upper end of uploading pressure passageway (2) is communicated with the centre bore of upper pressure-transmitting joint (1); The lower end of uploading pressure passageway (2) is communicated with the centre bore of top connection (3); There is internal thread the upper end of uploading pressure passageway (2); There is external screw thread upper pressure-transmitting joint (1) lower end, by screw thread, is fixed on and is uploaded pressure passageway (2) top; On top connection (3) outer wall circumferencial direction, be evenly equipped with the pressure break passage (16) of three axial long troughs, top connection (3) inner sleeve has outer sliding sleeve (5), outer sliding sleeve (5) inner sleeve has inner sliding sleeve (6), outer sliding sleeve (5) and inner sliding sleeve (6) are cylindrical shape, between outer sliding sleeve (5) and inner sliding sleeve (6), there is annular space chamber, outer sliding sleeve (5) is integrally welded with inner sliding sleeve (6), on outer sliding sleeve (5) wall, there is a radially fluid hole (4), in the upper and lower both sides of fluid hole (4) radially and have " O " RunddichtringO on outer sliding sleeve (5) outer wall; Radially fluid hole (4) inner with interior outer sliding sleeve between annular space chamber be communicated with, outer end is with to upload pressure passageway (2) lower ending opening relative, and connection with it; Outer sliding sleeve (5) can slide along top connection (3) inwall with inner sliding sleeve (6), outer sliding sleeve (5) and inner sliding sleeve (6) shutoff pressure break passage (16);
There is external screw thread the lower end of top connection (3), in the lower end of top connection (3), is connected with a columnar cylinder sleeve (12); In cylinder sleeve (12) inner sleeve, there is a upper connecting cylinder (13), between upper connecting cylinder (13) and cylinder sleeve (12), there is annular space chamber, there is internal thread upper connecting cylinder (13) upper end, there is external screw thread outer sliding sleeve (5) lower end, and outer sliding sleeve (5) lower end is threaded with upper connecting cylinder (13) upper end; In upper connecting cylinder (13) inner sleeve, there is fairlead (10), the outer wall of fairlead (10) is stairstepping, fairlead (10) top smaller diameter end is enclosed within on the inwall of outer sliding sleeve (5), between fairlead (10) and outer sliding sleeve (5), has " O " RunddichtringO; The annular step surface of fairlead (10) is the upper surface of piston; On upper connecting cylinder (13) wall, have inlet opening (7) radially, inlet opening (7) be positioned at piston upper surface; Between upper connecting cylinder (13) and fairlead (10), by shear pin (8), link together, in the bottom of shear pin (8) and have " O " RunddichtringO (9) between fairlead (10) and upper connecting cylinder (13);
On upper connecting cylinder (13) inwall, have screw thread, supporting seat (15) is threaded with upper connecting cylinder (13), and described supporting seat (15) is cylindrical shape, and supporting seat (15) is in upper connecting cylinder (13); The upper centre bore of supporting seat (15) has two place's undergauges, between undergauge centre bore by taper seat transition; On the taper seat on top, there is a reducing ball seat (14); Fairlead (10) lower end is in supporting seat (15), and fairlead (10) outer wall and supporting seat (15) inwall are slidably matched; And the lower surface of fairlead (10) contacts with the upper surface of reducing ball seat (14); Described reducing ball seat (14) be shaped as an annular jaggy, there is outer conical surface the lower end of reducing ball seat (14), the outer conical surface of reducing ball seat (14) lower end is identical with the angle of supporting seat (15) the top transition circle conical surface;
There is internal thread the lower end of cylinder sleeve (12), the lower pressure transmission body (19) of the annular that is threaded in the lower end of cylinder sleeve (12); There is internal thread lower pressure transmission body (19) centre bore lower end, has been threaded connection lower contact (21), and there is external screw thread lower contact (21) lower end; Lower connecting cylinder (17) is cylindrical shape, the lower end of lower connecting cylinder (17) is enclosed within lower pressure transmission body (19), upper end is enclosed between the lower end and supporting seat (15) of connecting cylinder (13), between the upper end outer wall of lower connecting cylinder (17) and upper connecting cylinder (13) lower end inwall, has " O " RunddichtringO; Between the upper end inwall of lower connecting cylinder (17) and supporting seat (15) lower end outer wall, there is O RunddichtringO; Between cylinder sleeve (12) inwall and lower connecting cylinder (17) outer wall, there is an annular pressure transmission chamber; On lower pressure transmission body (19) lower end wall, have an axial lower pressure transmission passage (18), the upper end of lower pressure transmission passage (18) is communicated with the annular pressure transmission chamber between cylinder sleeve (12) and lower connecting cylinder (17); There is internal thread lower pressure transmission passage (18) lower end, and in lower pressure transmission passage (18) lower end, screw thread is fixed with a lower pressure-transmitting joint (20); There is internal thread lower pressure-transmitting joint (20) lower end.
2. variable-diameter fracturing valve according to claim 1, is characterized in that: between upper connecting cylinder (13) inwall and fairlead (10), have lock ring groove, have the lock ring (11) of unidirectional stepping in lock ring groove; Lock ring (11) is annular, and inner and outer wall all has unidirectional stepping button.
3. variable-diameter fracturing valve according to claim 1, is characterized in that: described reducing ball seat (14) adopts aluminum alloy materials to make.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110314426.0A CN102337862B (en) | 2011-10-17 | 2011-10-17 | Variable-diameter fracturing valve |
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| CN201110314426.0A CN102337862B (en) | 2011-10-17 | 2011-10-17 | Variable-diameter fracturing valve |
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| CN102337862B true CN102337862B (en) | 2014-01-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103375159B (en) * | 2012-04-17 | 2016-01-13 | 中国石油化工股份有限公司 | A kind of many flowing holes sliding sleeve and horizontal well multistage fracturing sliding bush tubing string |
| US9644453B2 (en) | 2012-08-08 | 2017-05-09 | Kureha Corporation | Ball sealer for hydrocarbon resource collection as well as production method therefor and downhole treatment method using same |
| CN103696748B (en) * | 2012-09-28 | 2016-10-12 | 中国石油天然气股份有限公司 | Do not limit the intelligent well cementation sliding sleeve separate stratum fracfturing reforming technology tubing string of progression |
| CN104100249B (en) * | 2013-04-03 | 2016-06-15 | 中国石油天然气股份有限公司 | Do not limit the sliding sleeve of bushing of hop count pressure break |
| CN104343430A (en) * | 2013-08-07 | 2015-02-11 | 胜利油田胜机石油装备有限公司 | Method for staged fracturing of well cementation casing string and tool for method |
| CN104343431B (en) * | 2014-10-28 | 2017-02-15 | 中国石油集团西部钻探工程有限公司 | Well cementation fracturing slide bushing |
| CN104453780A (en) * | 2014-12-04 | 2015-03-25 | 中国石油天然气股份有限公司 | Multi-stage staged fracturing sliding sleeve and fracturing tubular column |
| CN105822274A (en) * | 2015-01-09 | 2016-08-03 | 中国石油天然气股份有限公司 | Horizontal well process pipe column |
| CN105822257B (en) * | 2015-01-09 | 2018-12-28 | 中国石油天然气股份有限公司 | Horizontal well intelligence sliding sleeve |
| CN104612647B (en) * | 2015-01-29 | 2017-09-05 | 杰瑞能源服务有限公司 | Switchable separate stratum fracturing well cementation sliding sleeve and its construction method |
| CN104975835B (en) * | 2015-06-11 | 2017-10-17 | 中国石油天然气股份有限公司 | A kind of elastic pressure break ball seat |
| CN106567700A (en) * | 2015-10-08 | 2017-04-19 | 中国石油天然气股份有限公司 | Oil field reservoir modification method |
| CN108729895B (en) * | 2017-04-18 | 2020-10-09 | 中国石油天然气股份有限公司 | Multistage fracturing tool of sleeve pipe ball seat |
| CN107366522B (en) * | 2017-08-01 | 2023-08-18 | 中国石油天然气集团有限公司 | Sliding sleeve opening tool with variable length and sleeve sliding sleeve thereof |
| CN115370338A (en) * | 2021-05-20 | 2022-11-22 | 中石化石油工程技术服务有限公司 | Staged fracturing operation method for horizontal well |
| CN113719257B (en) * | 2021-10-07 | 2023-06-20 | 哈尔滨工业大学重庆研究院 | Full-drift-diameter infinite-level intelligent fracturing sliding sleeve and layered fracturing implementation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2635907Y (en) * | 2003-08-14 | 2004-08-25 | 胡才志 | Hydraulic controllable sleeve |
| CN201650256U (en) * | 2010-05-12 | 2010-11-24 | 中国石油集团西部钻探工程有限公司克拉玛依钻井工艺研究院 | Ball seat type cracking slide sleeve |
| CN202338279U (en) * | 2011-10-17 | 2012-07-18 | 中国石油天然气股份有限公司 | Variable-diameter fracturing valve |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080135248A1 (en) * | 2006-12-11 | 2008-06-12 | Halliburton Energy Service, Inc. | Method and apparatus for completing and fluid treating a wellbore |
| US7814981B2 (en) * | 2008-08-26 | 2010-10-19 | Baker Hughes Incorporated | Fracture valve and equalizer system and method |
| EP2507060A4 (en) * | 2009-08-21 | 2014-01-08 | Zamtec Ltd | Continuous web printer with short media feed path |
| CN201843582U (en) * | 2010-10-22 | 2011-05-25 | 中国石油天然气集团公司 | Hydraulic sliding sleeve for well completion |
-
2011
- 2011-10-17 CN CN201110314426.0A patent/CN102337862B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2635907Y (en) * | 2003-08-14 | 2004-08-25 | 胡才志 | Hydraulic controllable sleeve |
| CN201650256U (en) * | 2010-05-12 | 2010-11-24 | 中国石油集团西部钻探工程有限公司克拉玛依钻井工艺研究院 | Ball seat type cracking slide sleeve |
| CN202338279U (en) * | 2011-10-17 | 2012-07-18 | 中国石油天然气股份有限公司 | Variable-diameter fracturing valve |
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