CN101280671B - Concentric tube jet flow negative pressure sand washing apparatus and using method thereoof - Google Patents

Concentric tube jet flow negative pressure sand washing apparatus and using method thereoof Download PDF

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Publication number
CN101280671B
CN101280671B CN 200810301496 CN200810301496A CN101280671B CN 101280671 B CN101280671 B CN 101280671B CN 200810301496 CN200810301496 CN 200810301496 CN 200810301496 A CN200810301496 A CN 200810301496A CN 101280671 B CN101280671 B CN 101280671B
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tube
concentric tube
sand
assembly
pipe
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CN101280671A (en
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谢斌
骆向杰
彭顺龙
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OIL EXTRACTION TECHNOLOGY INSTITUTE OF SINOPEC XINJIANG OILFIELD Co Ltd
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OIL EXTRACTION TECHNOLOGY INSTITUTE OF SINOPEC XINJIANG OILFIELD Co Ltd
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Priority to CN 200810301496 priority Critical patent/CN101280671B/en
Publication of CN101280671A publication Critical patent/CN101280671A/en
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Abstract

The invention relates to a sand washing and blocking removal device for oil and water wells in an oil field and a use method thereof, which is a sand washing device by concentric tube jet negative pressure and a use method thereof; the sand washing device by concentric tube jet negative pressure comprises an inverting jet sand washing device, a concentric tube flushing valve, a concentric tube sand washing pipe column, a concentric tube redirector and a circulating filter device; the inverting jet sand washing device, the concentric tube flushing valve, the concentric tube sand washing pipe column and the concentric tube redirector are connected together in sequence from bottom to top; the liquid outlet of the internal pipe cavity of the concentric tube redirector is communicated with the liquid inlet of the circulating filter device; the by-pass liquid inlet of the concentric tube redirector is communicated with the liquid outlet of the circulating filter device. The sand washing device by concentric tube jet negative pressure of the invention has reasonable and compact structure and convenient installation and disassembly, which can not only promote the discharge of the sand washing liquid, but ensure that carrying fluid returns to ground and is discharged after filtering, thus greatly improving the working efficiency of sand washing and blocking removal; the use method is convenient to use and simple and convenient to operate..

Description

Concentric tube jet flow negative pressure sand flushing device and using method thereof
One, technical field
The present invention relates to sand washing plug-removing device and the using method thereof of oil field oil, well, is a kind of concentric tube jet flow negative pressure sand flushing device and using method thereof.
Two, background technology
At present, in the operation of oil field oil, well, to glued strong or viscosity of crude is high, sand plug is difficult for washing open the well of the big low pressure well of sand cleaning fluid wastage, oil-sand with can not set up the well of circulation, as heavy oil wells, horizontal well, low pressure well etc., all can not carry out sand washing de-plugging operation well.
Three, summary of the invention
The invention provides a kind of concentric tube jet flow negative pressure sand flushing device, overcome the deficiency of above-mentioned prior art, it can effectively solve the problem of sand washing de-plugging difficulty.
The present invention puies forward the using method that a kind of concentric tube jet flow negative pressure sand flushing device also is provided, and has overcome the deficiency of above-mentioned prior art, and it is easy to use, easy and simple to handle.
One of technical scheme of the present invention realizes by following measure: a kind of concentric tube jet flow negative pressure sand flushing device comprises that commutation jet flow sand washing device, concentric tube wash kill valve, concentric tube sand washing tubing string, concentric tube steering gear and circulation filter; Commutation jet flow sand washing device, concentric tube are washed kill valve, concentric tube sand washing tubing string and concentric tube steering gear and are linked together in regular turn from bottom to top, the liquid outlet of the interior tube chamber of concentric tube steering gear is connected with the inlet of circulation filter, and the inlet of the bypass of concentric tube steering gear is connected with the liquid outlet of circulation filter; Wherein, circulation filter can comprise enterprising fluid pipeline, following liquid in-out pipeline, be circulated throughout filter box and liquid truck; Enterprising fluid pipeline, be circulated throughout filter box, liquid truck and following liquid in-out pipeline and link together in regular turn, the liquid outlet of the interior tube chamber of concentric tube steering gear is connected with the inlet of enterprising fluid pipeline, and the inlet of the bypass of concentric tube steering gear is connected with the liquid outlet of following liquid in-out pipeline.
Be the further optimization and/or improvements to one of foregoing invention technical scheme below:
Above-mentioned commutation jet flow sand washing device can comprise guide head, central tube, outer cylinder sheath, bridge-type joint and top connection; The inboard, lower end of top connection is fixed together with the outside, upper end of the outer tube of bridge-type joint; The outside, lower end of the outer tube of bridge-type joint is fixed together with the inboard, upper end of outer cylinder sheath; Inboard, lower end at outer cylinder sheath is set with central tube, and the outside, lower end of central tube is fixed together with the inboard, upper end of guide head, has at guide head to be no less than one flooding nozzle; Central tube between outer cylinder sheath and guide head is set with spring, and the upper end of spring withstands on the bottom of outer cylinder sheath, and the lower end of spring withstands on the guide head, and the outside, upper end of central tube is sleeved on the inboard, interior pipe lower end of bridge-type joint; Inner pipe joint is arranged in top connection, and the lower end of inner pipe joint is sleeved on the outside, upper end of the interior pipe of bridge-type joint, is set with anemostat and trunnion in the inner pipe joint from top to bottom; The lower end of nozzle carrier is sleeved on the inboard, upper end of central tube, is installed with the lifting nozzle in nozzle carrier, forms the central tube mobile cavity between the interior pipe of nozzle carrier and bridge-type joint, and central tube can move up and down in the central tube mobile cavity; In the nozzle carrier upper end pressure cap is arranged, in inboard, inner pipe joint lower end first boss is arranged, form first groove between the end face of the interior pipe of first boss and bridge-type joint, pressure cap is installed in first groove; Have at the side of bridge-type joint to be no less than one inlet opening, the import of inlet opening communicates with the outside of bridge-type joint, and the outlet of inlet opening communicates with the central tube mobile cavity; Between lifting nozzle and trunnion, form the low pressure imbibing hole, the liquid outlet of central tube mobile cavity communicates with the inlet of low pressure imbibing hole, and the liquid outlet of low pressure imbibing hole communicates with the inner chamber of trunnion, have in the upper end of central tube and to be no less than one the jet lifting passage that can communicate with central tube inner chamber and outer cylinder sheath inner chamber, central tube below jet lifting passage has and is no less than one the flushing blocking channel that can communicate with central tube inner chamber and outer cylinder sheath inner chamber, in the central tube between jet lifting passage and flushing blocking channel the plug that can seal up the central tube inner chamber is arranged, forming annular admission chamber between top connection and the inner pipe joint, annular feed pathway is arranged in the bridge-type joint, the inlet of annular feed pathway communicates with the liquid outlet of last annular admission chamber, and the liquid outlet of annular feed pathway communicates with the inlet of outer cylinder sheath inner chamber.
The lower end of above-mentioned guide head can have and is no less than one impact teeth, and central nozzle is installed in the guide head of impact teeth upper end, and the prism of guide head has and is no less than one the installing hole that communicates with the guide head inner chamber, and flooding nozzle is installed in installing hole.
The upper surface of above-mentioned anemostat can withstand on the plush copper of inner pipe joint upper end, the lower surface of anemostat withstands on the upper surface of trunnion, inner pipe joint above first boss has second boss, form second groove between second boss and the pressure cap, in second groove pressure ring is installed, the lower surface of trunnion withstands on the upper surface of pressure ring.
Can there be the plug outer lug boss in the outside of above-mentioned plug, in the inboard of outer cylinder sheath the outer cylinder sheath inner convex platform is arranged, and the plug outer lug boss can withstand on the bottom surface of interior pipe of outer cylinder sheath inner convex platform or bridge-type joint.
Above-mentioned concentric tube converter can comprise top connection, turns to an assembly, interior pipe, outer tube and seal nipple; The outside, the lower end of top connection with turn to the inboard, upper end of an assembly to be fixed together, the inboard outside, upper end with interior pipe, the lower end of top connection is fixed together; Be installed with bypass at the side that turns to an assembly; There is outer tube in the outside, bottom at interior pipe, turns to the inboard outside, upper end with outer tube, lower end of an assembly to be fixed together; Form the feed pathway that communicates with the liquid outlet of bypass between an assembly and outer tube and the interior pipe turning to, seal nipple is arranged in feed pathway, the middle part of seal nipple is fixed together outside the inboard lower end with interior pipe.
Turning between an assembly and the interior pipe of above-mentioned bypass below can have lower contact, there is inner convex platform the upper end that turns to an assembly below bypass, there is outer lug boss at middle part in lower contact, the upper end of lower contact is sleeved in the inner convex platform, the outer lug boss at lower contact middle part is sleeved on an inboard, assembly middle part that turns to of bypass below, the inboard outside, upper end with outer tube, the lower end of lower contact is fixed together, turning between an assembly and the lower contact below the inner convex platform bearing is arranged, the overcoat of bearing is installed on the inside wall that turns to an assembly, the interior cover of bearing is installed in the lower contact, is turning to an assembly, form the feed pathway that communicates with the liquid outlet of bypass between outer tube and lower contact and the interior pipe.
Between the lower end of the above-mentioned lower end that turns to an assembly and lower contact baffle ring can be arranged, the inboard of baffle ring and the lower end of lower contact are fixed together, the outside of baffle ring by anti-turn screw with turn to the lower end of an assembly to be fixed together.
Two of technical scheme of the present invention realizes by following measure: a kind of using method of above-mentioned concentric tube jet flow negative pressure sand flushing device, it is undertaken by following step: sand output well is lowered to the commutation jet flow sand washing device from bottom to top in regular turn, concentric tube is washed kill valve, concentric tube sand washing tubing string, after tubing string is visited sand plug, well head connects the concentric tube steering gear and advances, the fluid pipeline begins the sand washing that circulates, sand cleaning fluid arrives the commutation jet flow sand washing device in shaft bottom after the concentric tube steering gear enters concentric tube sand clean out pipe band of column sky, the guide head of commutation jet flow sand washing device contacts with sand plug, then the jet impulse of front end flooding nozzle and central nozzle generation, pulverize sand plug; Sand plug is washed open or the upper lifting pipe post makes guide head not contact sand plug, the changement work of commutation jet flow sand washing device, front end sand washing nozzle fluid course is closed, rear end jet pump nozzle flow channel is opened, sand cleaning fluid produces jet from the lifting nozzle, between lifting nozzle and trunnion, cause low-pressure area, mulling liquid in shaft bottom is sucked and sprays into pipe is lifted to ground in the concentric tube, drain into through concentric tube steering gear and enterprising fluid pipeline at well head and be circulated throughout filter box.
Concentric tube jet flow negative pressure sand flushing device reasonable and compact in structure of the present invention, installation, convenient disassembly can not only improve the sand cleaning fluid discharge capacity, and guarantee that load fluid returns to ground rapidly and filtering emission, have therefore improved the operating efficiency of sand washing de-plugging greatly; This using method is easy to use, easy and simple to handle.
Four, description of drawings
Accompanying drawing 1 is the structural representation of most preferred embodiment of the present invention;
Accompanying drawing 2 is looked the sectional structure schematic diagram for the master of commutation jet flow sand washing device in the most preferred embodiment of the present invention;
Accompanying drawing 3 is analysed and observe the structure for amplifying schematic diagram for the master of guide head in the accompanying drawing 2 looks;
Accompanying drawing 4 for A-A in the accompanying drawing 2 to the broken section structural representation that does not comprise nozzle carrier;
Accompanying drawing 5 is looked the sectional structure schematic diagram for the master of concentric tube converter in the most preferred embodiment of the present invention;
The master that accompanying drawing 6 is connected with concentric oil tubes for the concentric tube converter looks the half section structural representation.
Accompanying drawing 7 is that the A-A of accompanying drawing 6 is to the sectional structure schematic diagram.
Coding in the accompanying drawing is respectively: 1 for guide head, pipe centered by 2, and 3 is outer cylinder sheath, 4 is the bridge-type joint, and 5 are top connection, and 6 is the outer tube of bridge-type joint, 7 is flooding nozzle, and 8 is spring, and 9 is the interior pipe of bridge-type joint, 10 is inner pipe joint, and 11 is anemostat, and 12 is trunnion, 13 is nozzle carrier, and 14 for the lifting nozzle, manages mobile cavity centered by 15,16 is pressure cap, and 17 is first boss, and 18 is inlet opening, 19 is the low pressure imbibing hole, tube cavity centered by 20, and 21 is the outer cylinder sheath inner chamber, 22 is jet lifting passage, and 23 are the flushing blocking channel, and 24 is plug, 25 is last annular admission chamber, nozzle centered by 26,27 is annular feed pathway, 28 are top connection, 29 for turning to an assembly, 30 is plush copper, and 31 is second boss, and 32 is pressure ring, 33 is the plug outer lug boss, 34 is the outer cylinder sheath inner convex platform, and 35 is interior pipe, and 36 is impact teeth, 37 is the guide head inner chamber, 38 is outer tube, and 39 is seal nipple, and 40 is bypass, 41 is the liquid outlet of bypass, 42 is feed pathway, and 43 are lower contact, and 44 is inner convex platform, 45 is outer lug boss, 46 is bearing, and 47 is baffle ring, and 48 is anti-turn screw, 49 is outer tube union head, 50 for top connection union head, and 51 is the commutation jet flow sand washing device, and 52 wash kill valve for concentric tube, 53 is concentric tube sand washing tubing string, 54 is the concentric tube steering gear, and 55 is the liquid outlet of interior tube chamber, and 56 is the inlet of bypass, 57 is enterprising fluid pipeline, 58 are following liquid in-out pipeline, and 59 for being circulated throughout filter box, and 60 is liquid truck.
Five, the specific embodiment
The present invention is not subjected to the restriction of following embodiment, can determine concrete embodiment according to technical scheme of the present invention and actual conditions.
Below in conjunction with embodiment and accompanying drawing the present invention is further described:
As shown in Figure 1, this concentric tube jet flow negative pressure sand flushing device comprises that commutation jet flow sand washing device 51, concentric tube wash kill valve 52, concentric tube sand washing tubing string 53, concentric tube steering gear 54 and circulation filter; Commutation jet flow sand washing device 51, concentric tube are washed kill valve 52, concentric tube sand washing tubing string 53 and concentric tube steering gear 54 and are linked together in regular turn from bottom to top, the liquid outlet 55 of the interior tube chamber of concentric tube steering gear 54 is connected with the inlet of circulation filter, and the inlet 56 of the bypass of concentric tube steering gear 54 is connected with the liquid outlet of circulation filter; Circulation filter comprises enterprising fluid pipeline 57, following liquid in-out pipeline 58, is circulated throughout filter box 59 and liquid truck 60; Enterprising fluid pipeline 57, be circulated throughout filter box 59, liquid truck 60 and following liquid in-out pipeline 58 and link together in regular turn, the liquid outlet 55 of the interior tube chamber of concentric tube steering gear 54 is connected with the inlet of enterprising fluid pipeline 57, and the inlet 56 of the bypass of concentric tube steering gear 54 is connected with the liquid outlet of following liquid in-out pipeline 58; Like this, can realize, after the jet wash sand plug is carried out repeatedly in the shaft bottom, aspirating load fluid again and being lifted to ground from interior pipe from concentric tube sand washing tubing string 53 annular space feed liquors.
Can according to actual needs above-mentioned concentric tube jet flow negative pressure sand flushing device be made further optimization and/or improvements:
Shown in accompanying drawing 2 to 4, commutation jet flow sand washing device 51 comprises guide head 1, central tube 2, outer cylinder sheath 3, bridge-type joint 4 and top connection 5; The inboard, lower end of top connection 5 is fixed together with the outside, upper end of the outer tube 6 of bridge-type joint; The outside, lower end of the outer tube 6 of bridge-type joint is fixed together with the inboard, upper end of outer cylinder sheath 3; Inboard, lower end at outer cylinder sheath 3 is set with central tube 2, and the outside, lower end of central tube 2 is fixed together with the inboard, upper end of guide head 1, and the flooding nozzle 7 that is no less than is arranged at guide head 1; Central tube 2 between outer cylinder sheath 3 and guide head 1 is set with spring 8, and the upper end of spring 8 withstands on the bottom of outer cylinder sheath 3, and the lower end of spring 8 withstands on the guide head 1, and the outside, the upper end of central tube 2 is sleeved on the inboard, lower end of the interior pipe 9 of bridge-type joint; Inner pipe joint 10 is arranged in top connection 5, and the lower end of inner pipe joint 10 is sleeved on the outside, upper end of the interior pipe 9 of bridge-type joint, is set with anemostat 11 and trunnion 12 in the inner pipe joint 10 from top to bottom; The lower end of nozzle carrier 13 is sleeved on the inboard, upper end of central tube 2, is installed with lifting nozzle 14 in nozzle carrier 13, forms central tube mobile cavity 15 between the interior pipe 9 of nozzle carrier 13 and bridge-type joint, and central tube 2 can move up and down in central tube mobile cavity 15; In nozzle carrier 13 upper ends pressure cap 16 is arranged, have in inboard, inner pipe joint 10 lower end between the end face of interior pipe 9 of first boss, 17, the first boss 17 and bridge-type joint to form first groove, pressure cap 16 is installed in first groove; Side at bridge-type joint 4 has the inlet opening 18 that is no less than, and the import of inlet opening 18 communicates with the outside of bridge-type joint 4, and the outlet of inlet opening 18 communicates with central tube mobile cavity 15; Between lifting nozzle 14 and trunnion 12, form low pressure imbibing hole 19, the liquid outlet of central tube mobile cavity 15 communicates with the inlet of low pressure imbibing hole 19, and the liquid outlet of low pressure imbibing hole 19 communicates with the inner chamber of trunnion 12, have in the upper end of central tube 2 and to be no less than one the jet lifting passage 22 that can communicate with central tube inner chamber 20 and outer cylinder sheath inner chamber 21, central tube 2 below jet lifting passage 22 has and is no less than one the flushing blocking channel 23 that can communicate with central tube inner chamber 20 and outer cylinder sheath inner chamber 21, in the central tube 2 between jet lifting passage 22 and flushing blocking channel 23 plug 24 that can seal up central tube inner chamber 20 is arranged, forming annular admission chamber 25 between top connection 5 and the inner pipe joint 10, annular feed pathway 27 is arranged in bridge-type joint 4, the inlet of annular feed pathway 27 communicates with the liquid outlet of last annular admission chamber 25, the liquid outlet of annular feed pathway 27 communicates with the inlet of outer cylinder sheath inner chamber 21, like this, by hocketing of flushing sand plug and the work of lifting mixed sand liquid, just can be very fast mixed sand liquid is discharged.
Shown in accompanying drawing 2 to 4, there is the impact teeth 36 that is no less than the lower end of guide head 1, central nozzle 26 is installed on the guide head 1 of impact teeth 36 upper ends, and the prism of guide head 1 has and be no less than one the installing hole that communicates with guide head inner chamber 37, and flooding nozzle 7 is installed in installing hole.So both can improve the ability that guide head 1 impacts, washes obstruction, and can prevent from stopping up central nozzle 26 again.
Shown in accompanying drawing 2 to 4, in order to make anemostat 11 and trunnion 12 more firm, the upper surface of anemostat 11 withstands on the plush copper 30 of inner pipe joint 10 upper ends, the lower surface of anemostat 11 withstands on the upper surface of trunnion 12, inner pipe joint 10 above first boss 17 has second boss 31, form second groove between second boss 31 and the pressure cap 16, pressure ring 32 is installed in second groove, the lower surface of trunnion 12 withstands on the upper surface of pressure ring 32.
Shown in accompanying drawing 2 to 4, move down excessive for fear of central tube 2, cause central tube 2 and nozzle carrier 13 to break away from, it is excessive perhaps to avoid central tube 2 to move up, in the outside of plug 24 plug outer lug boss 33 is arranged, in the inboard of outer cylinder sheath 3 outer cylinder sheath inner convex platform 34 is arranged, plug outer lug boss 33 can withstand on the bottom surface of interior pipe 9 of outer cylinder sheath inner convex platform 34 or bridge-type joint.
Shown in accompanying drawing 5 to 7, concentric tube converter 54 comprises top connection 28, turns to an assembly 29, interior pipe 35, outer tube 38 and seal nipple 39; The outside, the lower end of top connection 28 with turn to the inboard, upper end of an assembly 29 to be fixed together, the inboard outside, upper end with interior pipe 35, the lower end of top connection 28 is fixed together; Be installed with bypass 40 at the side that turns to an assembly 29; There is outer tube 38 in the outside, bottom at interior pipe 35, turns to the inboard outside, upper end with outer tube 38, lower end of an assembly 29 to be fixed together; Form the feed pathway 42 that communicates with the liquid outlet 41 of bypass between an assembly 29 and outer tube 38 and the interior pipe 35 turning to, seal nipple 39 is arranged in feed pathway 42, the inboard outside, lower end with interior pipe 35, the middle part of seal nipple 39 is fixed together, when the concentric tube converter is connected with concentric tube sand washing tubing string, concentric oil tubes connector and sealing are inserted in the lower end of seal nipple 39, the pin thread of outer tube 38 is connected by tubing round thread with the special box cupling of concentric oil tubes connector, bypass 40 can be connected with the liquid outlet of following liquid in-out pipeline by outer tube union head 49, and top connection 28 can be connected with the inlet of enterprising fluid pipeline by top connection union head 50.Such connected mode not only simple in structure and also be convenient to the dismounting and the maintenance.。
Shown in accompanying drawing 5 to 7, turning between an assembly 29 and the interior pipe 35 of bypass 40 belows has lower contact 43, there is inner convex platform 44 the upper end that turns to an assembly 29 below bypass 40, at the middle part of lower contact 43 outer lug boss 45 is arranged, the upper end of lower contact 43 is sleeved in the inner convex platform 44, what the outer lug boss 45 at lower contact 43 middle parts was sleeved on bypass 40 belows turns to inboard, an assembly 29 middle part, the inboard outside, upper end with outer tube 38, the lower end of lower contact 43 is fixed together, turning between an assembly 29 and the lower contact 43 below the inner convex platform 44 bearing 46 is arranged, the overcoat of bearing 46 is installed on the inside wall that turns to an assembly 29, the interior cover of bearing 46 is installed in the lower contact 43, turning to an assembly 29, form the feed pathway 42 that communicates with the liquid outlet 41 of bypass between outer tube 38 and lower contact 43 and the interior pipe 35, the use of bearing 46 can make and turn to an assembly 29 to rotate flexibly, is convenient to connect and dismounting.
Shown in accompanying drawing 5 to 7, turn between the lower end of the lower end of an assembly 29 and lower contact 43 baffle ring 47 is arranged, the lower end of the inboard of baffle ring 47 and lower contact 43 is fixed together, the outside of baffle ring 47 is by anti-turn screw 48 and turn to the lower end of an assembly 29 to be fixed together, like this, can prevent from turning in the course of the work the rotation of an assembly 29 by anti-turn screw 48.
In the present invention: concentric tube is washed kill valve 52 and is adopted existing known technology.
Above technical characterictic has constituted most preferred embodiment of the present invention, and it has stronger compliance and best implementation result, can increase and decrease non-essential technical characterictic according to actual needs, satisfies the demand of different situations.
The use of most preferred embodiment of the present invention: as shown in Figure 1, sand output well is lowered to commutation jet flow sand washing device 51 from bottom to top in regular turn, concentric tube is washed kill valve 52, concentric tube sand washing tubing string 53, after tubing string is visited sand plug, well head connects concentric tube steering gear 54 and advances, the fluid pipeline begins the sand washing that circulates, sand cleaning fluid arrives the commutation jet flow sand washing device 51 in shaft bottom after concentric tube steering gear 54 enters concentric tube sand clean out pipe band of column sky, the guide head 1 of commutation jet flow sand washing device 51 contacts with sand plug, then the jet impulse of front end flooding nozzle 7 and central nozzle 26 generations, pulverize sand plug.Sand plug is washed open or the upper lifting pipe post makes guide head 1 not contact sand plug, the changement work of commutation jet flow sand washing device 51, front end sand washing nozzle fluid course is closed, rear end jet pump nozzle flow channel is opened, sand cleaning fluid produces jet from lifting nozzle 14, cause low-pressure area at lifting nozzle 14 and 12 of trunnions, mulling liquid in shaft bottom is sucked and sprays into pipe is lifted to ground in the concentric tube, drain into through concentric tube steering gear 54 and enterprising fluid pipeline 57 at well head and be circulated throughout filter box 59.Whenever dashed a concentric tube sand washing tubing string 53, unload enterprising fluid pipeline 57, liquid in-out pipeline 58 and concentric tube steering gear 54 down, next root concentric tube sand washing tubing string 53 (having connected concentric tube steering gear 54) connects liquid in-out pipeline 57 and following liquid in-out pipeline 58, continues to be lowered to.So repeatedly, until being flushed to the shaft bottom.On when carrying concentric tube sand washing tubing string 53 if tubing string is buried by sand card or sand, can suppress from the interior pipe pitching of concentric tube sand washing tubing string 53 and open concentric tube and wash kill valve 52, carry out positive and negative circulation well cleanup unfreezing.

Claims (9)

1. concentric tube jet flow negative pressure sand flushing device is characterized in that comprising that commutation jet flow sand washing device, concentric tube wash kill valve, concentric tube sand washing tubing string, concentric tube steering gear and circulation filter; Commutation jet flow sand washing device, concentric tube are washed kill valve, concentric tube sand washing tubing string and concentric tube steering gear and are linked together in regular turn from bottom to top, the liquid outlet of the interior tube chamber of concentric tube steering gear is connected with the inlet of circulation filter, and the inlet of the bypass of concentric tube steering gear is connected with the liquid outlet of circulation filter; Wherein, circulation filter comprises enterprising fluid pipeline, following liquid in-out pipeline, is circulated throughout filter box and liquid truck; Enterprising fluid pipeline, be circulated throughout filter box, liquid truck and following liquid in-out pipeline and link together in regular turn, the liquid outlet of the interior tube chamber of concentric tube steering gear is connected with the inlet of enterprising fluid pipeline, and the inlet of the bypass of concentric tube steering gear is connected with the liquid outlet of following liquid in-out pipeline; Wherein:
The commutation jet flow sand washing device comprises guide head, central tube, outer cylinder sheath, bridge-type joint and first top connection; The inboard, lower end of first top connection is fixed together with the outside, upper end of first outer tube of bridge-type joint; The outside, lower end of first outer tube of bridge-type joint is fixed together with the inboard, upper end of outer cylinder sheath; Inboard, lower end at outer cylinder sheath is set with central tube, and the outside, lower end of central tube is fixed together with the inboard, upper end of guide head, has at guide head to be no less than one flooding nozzle; Central tube between outer cylinder sheath and guide head is set with spring, and the upper end of spring withstands on the bottom of outer cylinder sheath, and the lower end of spring withstands on the guide head, and the outside, upper end of central tube is sleeved on the first interior pipe inboard, lower end of bridge-type joint; In first top connection inner pipe joint is arranged, the lower end of inner pipe joint is sleeved on the outside, upper end of the first interior pipe of bridge-type joint, is set with anemostat and trunnion in the inner pipe joint from top to bottom; The lower end of nozzle carrier is sleeved on the inboard, upper end of central tube, is installed with the lifting nozzle in nozzle carrier, forms the central tube mobile cavity between the first interior pipe of nozzle carrier and bridge-type joint, and central tube can move up and down in the central tube mobile cavity; In the nozzle carrier upper end pressure cap is arranged, in inboard, inner pipe joint lower end first boss is arranged, form first groove between the end face of the first interior pipe of first boss and bridge-type joint, pressure cap is installed in first groove; Have at the side of bridge-type joint to be no less than one inlet opening, the import of inlet opening communicates with the outside of bridge-type joint, and the outlet of inlet opening communicates with the central tube mobile cavity; Between lifting nozzle and trunnion, form the low pressure imbibing hole, the liquid outlet of central tube mobile cavity communicates with the inlet of low pressure imbibing hole, and the liquid outlet of low pressure imbibing hole communicates with the inner chamber of trunnion, have in the upper end of central tube and to be no less than one the jet lifting passage that can communicate with central tube inner chamber and outer cylinder sheath inner chamber, central tube below jet lifting passage has and is no less than one the flushing blocking channel that can communicate with central tube inner chamber and outer cylinder sheath inner chamber, in the central tube between jet lifting passage and flushing blocking channel the plug that can seal up the central tube inner chamber is arranged, forming annular admission chamber between first top connection and the inner pipe joint, annular feed pathway is arranged in the bridge-type joint, the inlet of annular feed pathway communicates with the liquid outlet of last annular admission chamber, and the liquid outlet of annular feed pathway communicates with the inlet of outer cylinder sheath inner chamber;
The concentric tube steering gear comprises second top connection, turns to an assembly, pipe, second outer tube and seal nipple in second; The outside, the lower end of second top connection with turn to the inboard, upper end of an assembly to be fixed together, the lower end of second top connection inboard with second in the outside, upper end of pipe be fixed together; Be installed with bypass at the side that turns to an assembly; There is second outer tube in the outside, the bottom of pipe in second, turns to the inboard outside, upper end with second outer tube, lower end of an assembly to be fixed together; Turning to an assembly and second outer tube to form the feed pathway that communicates with the liquid outlet of bypass between the pipe in second, described seal nipple is arranged in feed pathway, the middle part of seal nipple inboard with second in be fixed together outside the lower end of pipe.
2. concentric tube jet flow negative pressure sand flushing device according to claim 1, the lower end that it is characterized in that guide head has and is no less than one impact teeth, central nozzle is installed in the guide head of impact teeth upper end, and the prism of guide head has and is no less than one the installing hole that communicates with the guide head inner chamber, and described flooding nozzle is installed in installing hole.
3. concentric tube jet flow negative pressure sand flushing device according to claim 2, the upper surface that it is characterized in that anemostat withstands on the plush copper of inner pipe joint upper end, the lower surface of anemostat withstands on the upper surface of trunnion, inner pipe joint above first boss has second boss, form second groove between second boss and the pressure cap, in second groove pressure ring is installed, the lower surface of trunnion withstands on the upper surface of pressure ring.
4. concentric tube jet flow negative pressure sand flushing device according to claim 3, there is the plug outer lug boss in the outside that it is characterized in that plug, in the inboard of outer cylinder sheath the outer cylinder sheath inner convex platform is arranged, the plug outer lug boss can withstand on the outer cylinder sheath inner convex platform or the bridge-type joint first on the bottom surface of pipe.
5. concentric tube jet flow negative pressure sand flushing device according to claim 1, it is characterized in that turning in an assembly and second of bypass below has lower contact between the pipe, there is inner convex platform the upper end that turns to an assembly below bypass, there is outer lug boss at middle part in lower contact, the upper end of lower contact is sleeved in the inner convex platform, the outer lug boss at lower contact middle part is sleeved on an inboard, assembly middle part that turns to of bypass below, the inboard outside, upper end with second outer tube, the lower end of lower contact is fixed together, turning between an assembly and the lower contact below the inner convex platform bearing is arranged, the overcoat of bearing is installed on the inside wall that turns to an assembly, the interior cover of bearing is installed in the lower contact, is turning to an assembly, form the described feed pathway that communicates with the liquid outlet of bypass in second outer tube and the lower contact and second between the pipe.
6. according to claim 2 or 3 or 4 described concentric tube jet flow negative pressure sand flushing devices, it is characterized in that turning in an assembly and second of bypass below has lower contact between the pipe, there is inner convex platform the upper end that turns to an assembly below bypass, there is outer lug boss at middle part in lower contact, the upper end of lower contact is sleeved in the inner convex platform, the outer lug boss at lower contact middle part is sleeved on an inboard, assembly middle part that turns to of bypass below, the inboard outside, upper end with second outer tube, the lower end of lower contact is fixed together, turning between an assembly and the lower contact below the inner convex platform bearing is arranged, the overcoat of bearing is installed on the inside wall that turns to an assembly, the interior cover of bearing is installed in the lower contact, is turning to an assembly, form the described feed pathway that communicates with the liquid outlet of bypass in second outer tube and the lower contact and second between the pipe.
7. concentric tube jet flow negative pressure sand flushing device according to claim 5, it is characterized in that turning between the lower end of the lower end of an assembly and lower contact baffle ring is arranged, the inboard of baffle ring and the lower end of lower contact are fixed together, and the outside of baffle ring is by anti-turn screw and turn to the lower end of an assembly to be fixed together.
8. concentric tube jet flow negative pressure sand flushing device according to claim 6, it is characterized in that turning between the lower end of the lower end of an assembly and lower contact baffle ring is arranged, the inboard of baffle ring and the lower end of lower contact are fixed together, and the outside of baffle ring is by anti-turn screw and turn to the lower end of an assembly to be fixed together.
9. one kind according to claim 2 or 3 or the using method of 4 or 6 or 8 described concentric tube jet flow negative pressure sand flushing devices, it is characterized in that being undertaken by following step: sand output well is lowered to the commutation jet flow sand washing device from bottom to top in regular turn, concentric tube is washed kill valve, concentric tube sand washing tubing string, after tubing string is visited sand plug, well head connects the concentric tube steering gear and reaches, following liquid in-out pipeline begins the sand washing that circulates, sand cleaning fluid arrives the commutation jet flow sand washing device in shaft bottom after the concentric tube steering gear enters concentric tube sand clean out pipe band of column sky, the guide head of commutation jet flow sand washing device contacts with sand plug, then the jet impulse of front end flooding nozzle and central nozzle generation, pulverize sand plug; Sand plug is washed open or the upper lifting pipe post makes guide head not contact sand plug, the changement work of commutation jet flow sand washing device, front end flooding nozzle fluid course is closed, rear end jet pump nozzle flow channel is opened, sand cleaning fluid produces jet from the lifting nozzle, between lifting nozzle and trunnion, cause low-pressure area, mulling liquid in shaft bottom is sucked and sprays into pipe is lifted to ground in the concentric tube, drain into through concentric tube steering gear and enterprising fluid pipeline at well head and be circulated throughout filter box.
CN 200810301496 2008-05-09 2008-05-09 Concentric tube jet flow negative pressure sand washing apparatus and using method thereoof Active CN101280671B (en)

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CN102094586B (en) * 2010-12-24 2014-02-19 中国石油天然气股份有限公司 Application method of ground sand washing device for horizontal well
CN102536144B (en) * 2011-12-30 2015-02-25 中国石油天然气股份有限公司 Coal-seam gas dual-channel well-washing valve
CN103388465A (en) * 2012-05-10 2013-11-13 中国石油大学(华东) Downhole device using hydraulic jets of parallel tubes to flush pulverized coal
CN104179487B (en) * 2013-05-24 2016-08-24 中国石油化工股份有限公司 Multi-functional retrievable type is for acid, acid discharge ejector
WO2014190518A1 (en) * 2013-05-30 2014-12-04 中国石油天然气股份有限公司 Negative pressure combined-sand-washing and forced-sand-discharging device
CN104453837B (en) * 2014-12-01 2017-04-05 中国石油天然气股份有限公司 Oil well flour sand device and oil production equipment
CN106285523A (en) * 2015-05-12 2017-01-04 中国石油天然气股份有限公司 A kind of horizontal well negative pressure takes out sand device
CN110375816B (en) * 2019-07-25 2021-10-08 广东工业大学 Venturi tube jet device

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