CN203783547U - Prefabricated throttle, throwing-in tool of prefabricated throttle and pushing rod of fishing tool of prefabricated throttle - Google Patents
Prefabricated throttle, throwing-in tool of prefabricated throttle and pushing rod of fishing tool of prefabricated throttle Download PDFInfo
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- CN203783547U CN203783547U CN201320642523.7U CN201320642523U CN203783547U CN 203783547 U CN203783547 U CN 203783547U CN 201320642523 U CN201320642523 U CN 201320642523U CN 203783547 U CN203783547 U CN 203783547U
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- sleeve
- restriction choke
- throttle
- fishing neck
- central axis
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- 241000282472 Canis lupus familiaris Species 0.000 claims description 40
- 239000000523 sample Substances 0.000 claims description 10
- 230000008602 contraction Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000010008 shearing Methods 0.000 abstract description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 15
- 229910052802 copper Inorganic materials 0.000 description 15
- 239000010949 copper Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 10
- 238000006073 displacement reaction Methods 0.000 description 8
- 230000001105 regulatory effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
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- 238000009434 installation Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000000284 resting effect Effects 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 239000003345 natural gas Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Abstract
The utility model relates to a prefabricated throttle, a throwing-in tool of the prefabricated throttle and a pushing rod of a fishing tool of the prefabricated throttle. The throttle comprises an inner fishing neck, a locating key sleeve, a throttle connector and a flow nipple. The inner fishing neck, the locating key sleeve and the throttle connector are connected in sequence in a threaded mode. The flow nipple is connected with the throttle connector in a threaded mode from the inner side of the bottom of the throttle connector. Two first pin holes and two second pin holes are formed in the side wall of the middle portion of the inner fishing neck in the radial direction, wherein the two first pin holes are perpendicular to each other, and the two second pin holes are perpendicular to each other. The inner diameter of the portion, connected with the locating key sleeve, of the inner fishing neck is smaller that the diameter of any other portion of the inner fishing neck. The inner diameter of the tail end of the locating key sleeve is smaller than the inner diameter of any other portion of the locating key sleeve. The throttle is fixedly connected with the throwing-in tool through pins. A spring in the throttle pushes a center shaft to move upwards after setting and shearing are conducted, so that a movable locking block enters a landing nipple groove, and setting is thorough and firm. Annular one-way sealing is achieved through a sealing assembly, the withstood pressure difference is high, setting is firm and reliable, generation of hydrate can be effectively avoided, and a production pipeline is prevented from being blocked.
Description
Technical field
The utility model relates to oil gas field production gas technology field, particularly a kind of presetting system restriction choke and delivery tool thereof and fishing tool push rod, and it is a kind of for oil gas well completion operation reducing pressure by regulating flow instrument.
Background technology
In project completion production gas technology field, long celebrating Su Lige south, restriction choke instrument is provided by Schlumberger company.This instrument is made up of 3-1/2 HP-A blanking plug, 3-1/2 CBNS-R locking tool, flow nipple three parts, 1), Schlumberger restriction choke PRS fishing tool external diameter and more greatly 27.74mm of completion tubular column gap in use procedure, find that at the scene this instrument exists three aspects: shortcoming:, thereby in restriction choke salvaging process, needing repeatedly up and down fishing tool to enter restriction choke fishing neck fishes for, like this, salvage in the process of dog restriction choke fishing neck end in multiple impact well and can cause its modification even to come off, be unfavorable for that restriction choke salvage carries out smoothly; After restriction choke sets successfully in well in addition, because its fishing neck external diameter is less, with more greatly 9.8mm of completion tubular column gap, very easily making pit shaft impurity cause restriction choke to be blocked in this accumulation cannot release.2), Schlumberger restriction choke delivery tool major diameter span access location length is 46cm, external diameter is 66.3mm, in the pit shaft that has certain hole deviation, major diameter position length easily causes delivery tool and the junction flexural deformation of restriction choke fishing neck, in addition adopting pin cut mode is that bilateral symmetry radial strut is sheared, in shear history, easily produce chip and cause delivery tool and the distortion adhesion of fishing neck junction, cannot slip out of the hand.3), Schlumberger restriction choke lock core adopts ratchet ring shearing to set, the process of setting need repeatedly be hit it is progressively sheared down, under hit number of times need more than 10 times, lock dog is along with the shearing of ratchet ring is progressively entered and is located in pipe nipple groove, if carrying tension force in this process will cause locking key not exclusively to enter being located pipe nipple groove, having increased construction risk a little more than carrying tension force on original.
Utility model content
In order to solve external diameter and the completion tubular column excesssive gap of restriction choke instrument fishing neck in above-mentioned prior art, cause fishing tool to be difficult for entering in fishing neck, impurity is very easily piled up in pit shaft gap; Delivery tool major diameter span access location length is long, easily causes delivery tool and the junction flexural deformation of restriction choke fishing neck; The pin cut mode that radial strut is sheared, easily produces chip and causes delivery tool and the distortion adhesion of fishing neck junction, cannot slip out of the hand; And adopt ratchet ring to shear the problems such as not thorough that set that cause that set, the utility model provides a kind of presetting system restriction choke and delivery tool and fishing tool push rod, restriction choke is lowered to 2.922 by steel wire operation mode " completion tubular column is located in pipe nipple; can be according to the flow nipples of the different sizes of the different choice of individual well natural gas operation output when use, thereby realizes the function of down-hole reducing pressure by regulating flow under different condition; And delivery tool can disposablely enter in the fishing neck of restriction choke, adopt pin to shear disposable setting simultaneously, withstand voltage difference is high, it is firm to set, and can effectively prevent that hydrate from generating, and avoids production flow line to stop up, reduce bottom pressure excitement, effectively improve air-flow fluid-carrying capability and simplify ground installation.
The utility model is achieved through the following technical solutions:
A kind of presetting system restriction choke, this restriction choke is column structure, comprise interior fishing neck, positioning key sleeve, restriction choke joint and flow nipple, between interior fishing neck, positioning key sleeve and restriction choke joint, connect successively from inside thread, flow nipple is connected with restriction choke joint screw thread from restriction choke joint bottom inside; On the sidewall at interior fishing neck middle part, be radially provided with four pin holes one of right-angled intersection and four pin holes two of right-angled intersection; The internal diameter of interior fishing neck and positioning key sleeve junction is less than the internal diameter of interior other parts of fishing neck; The internal diameter of positioning key sleeve tail end is less than the internal diameter of other parts of positioning key sleeve, and positioning key sleeve middle part is radially evenly embedded with four movable lock dogs, and movable lock dog inside edge place is provided with 45 ° of chamferings; Lateral wall between positioning key sleeve tail end and movable lock dog is provided with and can not passes through step; Positioning key sleeve inner side is provided with a central axis vertically, central axis top contacts with interior fishing neck bottom, the internal-and external diameter on central axis top is all expanded to both sides, the external diameter of central axis middle part and movable lock dog contact portion is greater than the external diameter of these part both sides, and central axis middle part is provided with 45 ° of chamferings with the edge of movable lock dog contact portion; Between central axis bottom and positioning key sleeve, cover has spring, and spring bottom is fixed on the internal diameter contraction place of positioning key sleeve tail end, and spring top contacts with the end face of central axis middle part projection.
Further, the part that positioning key sleeve medial surface contacts with central axis top is provided with two circle grooves one vertically, the width of described groove one is greater than the width at external diameter expansion place, central axis top, in the positioning key sleeve lateral wall between described two circle grooves one, is radially provided with a pin hole three.
Further, on the lateral wall that in restriction choke, positioning key sleeve tail end is connected with restriction choke joint junction, also cover has black box, and described black box is made up of seven rubber seal.
Further, restriction choke joint bottom is also threaded with lower contact front end, and described lower contact tail end internal-and external diameter all shrinks, and lower contact tail end is provided with internal thread.
Further, connection of thread is equipped with interior hexagonal lock-screw and O type circle.
Further, the external diameter of interior fishing neck is 69.5mm, and the internal diameter of interior fishing neck oral area is 58.75mm.
A kind of for throwing in the delivery tool of above-mentioned arbitrary technical scheme restriction choke, comprise mandrel, positioning sleeve and guide probe, mandrel is threaded with positioning sleeve from inner side, and positioning sleeve is threaded with the top of guide probe from inner side, and the tail end of guide probe is tapered; The outer middle side part of mandrel has a circle fin, and there is checking sleeve in the mandrel outside between fin and positioning sleeve also cover, and checking sleeve can move vertically in mandrel outside, and checking sleeve is arrow shaped near one end of mandrel fin, and its external diameter is greater than the external diameter of fin; Checking sleeve is radially provided with four pin holes four of right-angled intersection near one end of positioning sleeve, the junction of positioning sleeve and mandrel is radially provided with four pin holes five of right-angled intersection; The fin in mandrel outside is 13.87mm to the length of positioning sleeve and mandrel junction; Positioning sleeve middle part is provided with back-up ring, and back-up ring is fixedly connected with by pin with positioning sleeve.
Further, positioning sleeve is evenly provided with four grooves two vertically with the outside of checking sleeve junction.
For salvaging a fishing tool push rod for above-mentioned arbitrary technical scheme restriction choke, comprise top connection and push rod, described push rod top is threaded with top connection bottom from inner side, and push rod bottom is taper; Described fishing tool push rod external diameter is 43mm.
In the utility model, the restriction choke joint of restriction choke bottom can be installed the flow nipple of different size, realizes the reducing pressure by regulating flow function in different condition well-sinking; Simultaneously restriction choke joint is connected with lower contact, can mounting shock absorber and pressure gauge, and realize reducing pressure by regulating flow and bottom pressure and monitor and walk abreast; With the matching used delivery tool major diameter of restriction choke director degree be 13.87mm, in the pit shaft that has certain hole deviation, tool string is shorter is difficult for flexural deformation, and throwing in cut mode is that pin axial end is sheared, the chip of avoiding shear history to produce causes distortion adhesion in fishing neck junction in delivery tool and restriction choke, cannot slip out of the hand; Fishing tool and completion tubular column internal diameter maximal clearance are 4.37mm, can disposablely enter fishing neck in restriction choke, and in restriction choke, the external diameter of fishing neck is 69.5mm, interior fishing neck oral area internal diameter is 58.75mm, after setting successfully and completion tubular column gap is only 2.35mm, can effectively prevent that in well, impurity is piled up at this, be conducive to salvage and carry out smoothly; Restriction choke is fixedly connected with by pin with delivery tool, shears to set rear restriction choke inner spring and promote to move on central axis and movable lock dog is entered be located in pipe nipple groove, and it is thorough, firm to set; Black box is realized annular space one-way sealing, and withstand voltage difference is high, and it is firm to set, and can effectively prevent that hydrate from generating, and avoids production flow line to stop up, and reduces bottom pressure excitement, effectively improves air-flow fluid-carrying capability and simplifies ground installation.
Brief description of the drawings
Fig. 1 is the structural representation of restriction choke in the utility model;
Fig. 2 is the structural representation of delivery tool in the utility model;
Fig. 3 is the structural representation of fishing tool push rod in the utility model.
Wherein, 1: interior fishing neck; 2: interior hexagonal lock-screw; 3: positioning key sleeve; 4: central axis; 5: movable lock dog; 6: spring; 7: black box; 8:O type circle; 9: restriction choke joint; 10: flow nipple; 11: lower contact; 12: can not pass through step; 13: pin hole one; 14: pin hole two; 15: pin hole three; 16: groove one; 21: mandrel; 22: checking sleeve; 23: positioning sleeve; 24: back-up ring; 25: guide probe; 26: pin hole four; 27: pin hole five; 28: groove two; 31: top connection; 32: push rod.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Shown in Fig. 1, Fig. 2, a kind of presetting system restriction choke, this restriction choke is column structure, comprise interior fishing neck 1, positioning key sleeve 3, restriction choke joint 9 and flow nipple 10, between interior fishing neck 1, positioning key sleeve 3 and restriction choke joint 9, be threaded successively, flow nipple 10 is threaded with restriction choke joint 9 from restriction choke joint 9 bottom inside.Flow nipple 10 has different specifications, determines according to individual well operation gas production size, after restriction choke G.I.H, pit shaft is played the effect of reducing pressure by regulating flow in the time driving a well operation.
On the sidewall at interior fishing neck 1 middle part, be radially provided with four pin holes 1 of right-angled intersection and four pin holes 2 14 of right-angled intersection, pin hole 1 and pin hole 2 14 are corresponding with pin hole 4 26, pin hole 5 27 on checking sleeve 22 and the positioning sleeve 23 of delivery tool respectively, and internal diameter is 6.35mm.The oral area internal diameter of interior fishing neck is 58.75mm, is 2.75, and " on GS, carry the crawl position of fishing tool salvaging dog, be also the coupling part with delivery tool simultaneously.Pin hole 1 is installed 6.35mm copper pins, after setting on carry checking whether set firm.Pin hole 2 14 is installed 6.35mm copper pin, and the connection of delivery tool and restriction choke is played to fixation, can hit down to shear and slip out of the hand.Pin hole 1 and pin hole 2 14 are all designed to four pin holes of right-angled intersection, have only used in actual use mutually perpendicular two, and orthogonal two pin holes are for subsequent use in addition.The external diameter of interior fishing neck 1 is 69.5mm, and after setting successfully and completion tubular column gap is only 2.35mm, can effectively prevent that in well, impurity is piled up at this, is conducive to salvage and carries out smoothly.
Interior fishing neck 1 and the internal diameter of positioning key sleeve 3 junctions are less than the internal diameter of interior fishing neck 1 other parts, for limit central axis on move.The internal diameter of positioning key sleeve 3 tail ends is less than the internal diameter of positioning key sleeve 3 other parts, and positioning key sleeve 3 middle parts are radially evenly embedded with four movable lock dogs 5, and movable lock dog 5 inside edge places are provided with 45 ° of chamferings.Movable lock dog 5 is corresponding with the groove that is located pipe nipple in well.Lateral wall between positioning key sleeve 3 tail ends and movable lock dog 5 is provided with and can not passes through step 12.Can not be by after step 12 G.I.Hs, and in pit shaft, be located can not contacting by step of pipe nipple, be that restriction choke sets the main stress point hitting at present.Positioning key sleeve 3 inner sides are provided with a central axis 4 vertically, central axis 4 tops contact with interior fishing neck 1 bottom, the internal-and external diameter on central axis 4 tops is all expanded to both sides, the external diameter of central axis 4 middle parts and movable lock dog 5 contact portions is greater than the external diameter of these part both sides, the edge of central axis 4 middle parts and movable lock dog 5 contact portions is provided with 45 ° of chamferings, corresponding with 45 ° of chamferings of movable lock dog 5 inside edges.The central axis 4 relatively movable lock dog 5 chamfering directions in chamfering position are subjected to displacement and can realize the withdrawal of four movable lock dogs and open.Between central axis 4 bottoms and positioning key sleeve 3, cover has spring 6, and spring 6 bottoms are fixed on the internal diameter contraction place of positioning key sleeve 3 tail ends, and spring 6 tops contact with the end face of central axis 4 middle part projections.
In the time that the back-up ring 24 of delivery tool acts on central axis 4 top end face downwards, central axis 4 is subjected to displacement downwards, and the larger projection of central axis 4 middle part external diameter moves down, and four movable lock dogs 5 enter retracted state simultaneously; When central axis 4 lower springs 6 compressions put in place, central axis 4 cannot continue to be downwards subjected to displacement, downward jarring force is now sheared the copper pin that makes back-up ring 24 interior installations, after back-up ring 24 pins are sheared, under the active force of spring 6, central axis 4 is upwards subjected to displacement gets back to original state, and four movable lock dogs 5 will be simultaneously in open configuration, be anchored in pit shaft and be located in pipe nipple groove, realization sets.
In addition, the part that positioning key sleeve 3 medial surfaces contact with central axis 4 tops is provided with two circle grooves 1 vertically, the width of groove 1 is greater than the width at central axis 4 external diameter expansion places, top, on positioning key sleeve 3 sidewalls between described two circle grooves 1, is radially provided with a pin hole 3 15.The internal diameter of pin hole 3 15 is 4.37mm, before delivery tool is installed, for limiting the position of central axis 4, keeps four movable lock dogs 5 in retrieving position, is convenient to install delivery tool.
On the lateral wall that in restriction choke, positioning key sleeve 3 tail ends are connected with restriction choke joint 9 junctions, also cover has black box 7, and black box 7 is made up of seven rubber seal.Sealing assembly 7 is corresponding with the sealing drum that is located pipe nipple in well, and annular space is sealed from bottom to top.
The bottom of restriction choke joint 9 is threaded with lower contact 11 front ends from inner side, described lower contact 11 tail end internal-and external diameters all shrink, lower contact 11 tail ends are provided with internal thread, can connect damper and pressure bomb, according to on-site actual situations, in reducing pressure by regulating flow, need can connect use in the individual well of monitor well bottom pressure.
In the utility model, the connection of thread of restriction choke is equipped with interior hexagonal lock-screw 2 and O type circle 8, and interior hexagonal lock-screw 2 plays locking screw thread in screwed connection place, prevent its in transferring and fishing for process because stressed rotation produces shackle; O type circle 8 plays sealing function to thread simultaneously.
In conjunction with Fig. 1 and Fig. 2, with the matching used delivery tool of restriction choke in the utility model, comprise mandrel 21, positioning sleeve 23 and guide probe 25, mandrel 21 is threaded with positioning sleeve 23 from inner side, positioning sleeve 23 is threaded with the top of guide probe 25 from inner side, the tail end of guide probe 25 is tapered, is convenient to delivery tool and enters in restriction choke, play the guiding role.The outer middle side part of mandrel 21 has a circle fin, mandrel 21 outsides between fin and positioning sleeve 23 are also overlapped checking sleeve 22, checking sleeve 22 can move vertically in mandrel 21 outsides, and checking sleeve 22 is arrow shaped near one end of mandrel 21 fins, and its external diameter is greater than the external diameter of fin; The other end of checking sleeve 22 can enter salvaging footpath 1 in restriction choke.Checking sleeve 22 is radially provided with four pin holes 4 26 of right-angled intersection near one end of positioning sleeve 23, pin hole 4 26 is fixed by copper pin with the pin hole 1 in restriction choke, after restriction choke sets on carry checking restriction choke and whether reliably set, can upwards shear and slip out of the hand.This input cut mode is that pin axial end is sheared, and the chip of avoiding shear history to produce causes distortion adhesion in fishing neck junction in delivery tool and restriction choke, cannot slip out of the hand.The junction of positioning sleeve 23 and mandrel 21 is radially provided with four pin holes 5 27 of right-angled intersection, and pin hole 5 27 is fixed by copper pin with the pin hole 2 14 in restriction choke, for fixing the each parts of delivery tool at the particular location at restriction choke.The fin in mandrel 21 outsides is 13.87mm to positioning sleeve 23 with the length of mandrel 21 junctions, and in the pit shaft that has certain hole deviation, tool string is shorter is difficult for flexural deformation.Positioning sleeve 23 middle parts are provided with back-up ring 24, and back-up ring 24 is fixedly connected with by pin with positioning sleeve 23.After delivery tool is installed, back-up ring 24 acts on central axis 4 ends downwards, and central axis 4 is subjected to displacement downwards, and movable lock dog 5 is regained; Hit 2-3 time under restriction choke, the copper pin of fixing back-up ring 24 can be sheared complete, under the effect of spring 6, central axis 4 is upwards subjected to displacement, movable lock dog 5 is in open configuration, and disposable the entering in pit shaft of guarantee activity lock dog 5 is located in pipe nipple groove, and it is thoroughly firm to set.
Positioning sleeve 23 is evenly provided with four grooves 28 vertically with the outside of checking sleeve 22 junctions, enters in well process to provide flow-guiding channel to instrument.
In conjunction with Fig. 1 and Fig. 3, with the matching used fishing tool push rod of restriction choke in the utility model, comprise top connection 31 and push rod 32, top connection 31 is the crawl positions while manually pressing push rod 32 downwards, in the time fishing for restriction choke, be connected in 2.75 and " on GS, carry fishing tool bottom, composition fishing tool.Described push rod 32 tops are threaded with top connection 31 bottoms from inner side, and push rod 32 bottoms are taper.By manually pressing downwards, restriction choke central axis 4 is subjected to displacement downwards, make movable lock dog 5 in retracted state, be convenient to install delivery tool.In described fishing tool, push rod 32 external diameters are 43mm, " on GS, carry fishing tool and completion tubular column internal diameter maximal clearance is 4.37mm; can disposablely enter in restriction choke in fishing neck 1, effectively solve the problem that existing fishing tool external diameter is less, be difficult for entering interior fishing neck 1 in fishing tool 2.75.
When actual use, first check delivery tool, guarantee to verify that sleeve 22 can move up and down, 3.97mm copper pin is installed in the back-up ring 4 of delivery tool, two ends polish smooth with file, and each screwed connection is fastening.Then fishing tool push rod is from top to bottom invested in restriction choke, manually press push rod 32 downwards and act on central axis 4 end faces, central axis 4 is subjected to displacement downwards, four movable lock dogs 5 of restriction choke are all regained, 4.37mm copper pin of the interior insertion of pin hole 3 15 on the positioning key sleeve 3 of restriction choke locks simultaneously, now lock dog is in retracted state, and takes out fishing tool push rod.
Ready delivery tool is from top to bottom installed in restriction choke, preprepared 2 6.35mm copper pins are installed in two pin holes of vertical direction in four pin holes 2 14 of restriction choke, be connected and fixed with the pin hole 5 27 in delivery tool.
In movable delivery tool, verify sleeve 22, make the pin hole 4 26 of delivery tool just right with the pin hole 1 of restriction choke, 2 of 6.35mm copper pins are installed and are fixed.The 4.37mm copper pin of the 3 15 interior insertions of pin hole in restriction choke is extracted simultaneously, the position that now back-up ring 24 of delivery tool inserts in 4.37mm copper pin just, make central axis 4 can not on move, four movable lock dogs 5 are in retracted state.Now restriction choke and delivery tool are installed and have been connected.
By the delivery tool connecting and restriction choke tool string by steel wire operation G.I.H, 80 ms/min of speed, be located 10 meter position, pipe nipple top observe carry tension force, transfer tension force, resting tension, and make a record.
Tool string is transferred to being located behind pipe nipple position, restriction choke can not by step 12 be located pipe nipple and can not contact by step, restriction choke stops descending, steel wire tension declines, treat that chain type bumper jar is completely closed, on starting, propose downward jarring, jarring number of times is controlled at 5 times with interior, under hit in process, be connected with delivery tool 2.75 " on GS, carrying fishing tool pin is cut off, 2.75 " on GS, carrying fishing tool salvaging dog slips out of the hand, in copper pin in delivery tool in pin hole 3 15 and restriction choke, in pin hole 2 14 and delivery tool, the copper pin in pin hole 5 27 is all successively cut off, spring 6 promotes to move on central axis 4, central axis 4 middle part projections contact with a side of 45 ° of chamferings with movable lock dog 5 with a side of 45 ° of chamferings, promotion activity lock dog 5 opens to be anchored in pit shaft and is located in pipe nipple groove, in while restriction choke, black box 7 is also positioned at and is located pipe nipple sealing drum.
Complete after downward jarring process, on carry checking restriction choke set effect, on carry tension force and increase sharply to exceed on original and carry tension force, prove restriction choke set firm after, adopt chain type bumper jar or the upwards jarring of spring bumper jar, in jarring process, cut off the 6.35mm copper pin of pin hole 4 26 interior installations in pin hole in restriction choke 1 and delivery tool, after this checking pin cuts off, above carry tension force and decline, delivery tool is slipped out of the hand successfully, restriction choke has set, and above plays tool string.
Trip out after the interior delivery tool string of well, by the top of top connection in fishing tool push rod and 2.75, " on GS, carrying tool lower portion screw thread is connected fastening; the fishing tool connecting is lowered to 10 meter position, restriction choke top in well by steel wire operation; in observation, carry tension force, transfer tension force, resting tension, and makes a record.
At the uniform velocity transfer fishing tool to throttle positions, tension force declines, and treats chain type bumper jar closure, in examination, carry tool string, when on carry after tension force generation significant change, the salvaging dog that proves fishing tool successfully enter in restriction choke in fishing neck 1, the locking of salvaging dog and complete internal fishing neck 1, the central axis 4 that the push rod 32 that fishing tool bottom connects promotes restriction choke moves down, movable lock dog 5 is regained, and upwards jarring, completes release, on mention tool string, restriction choke construction completes smoothly.
The parts that the present embodiment does not describe in detail and structure belong to well-known components and common structure or the conventional means of the industry, here not narration one by one.
Claims (10)
1. presetting system restriction choke, described restriction choke is column structure, it is characterized in that, comprise interior fishing neck, positioning key sleeve, restriction choke joint and flow nipple, between described interior fishing neck, positioning key sleeve and restriction choke joint, be threaded successively, described flow nipple is connected with restriction choke joint screw thread from restriction choke joint bottom inside; On the sidewall at described interior fishing neck middle part, be radially provided with orthogonal two pin holes one and orthogonal two pin holes two; The internal diameter of described interior fishing neck and positioning key sleeve junction is less than the internal diameter of interior other parts of fishing neck; The internal diameter of described positioning key sleeve tail end is less than the internal diameter of other parts of positioning key sleeve, and positioning key sleeve middle part is radially evenly embedded with four movable lock dogs, and described movable lock dog inside edge place is provided with 45 ° of chamferings; Lateral wall between described positioning key sleeve tail end and movable lock dog is provided with and can not passes through step; Described positioning key sleeve inner side is provided with a central axis vertically, described central axis top contacts with interior fishing neck bottom, the internal-and external diameter on central axis top is all expanded to both sides, the external diameter of central axis middle part and movable lock dog contact portion is greater than the external diameter of these part both sides, and central axis middle part is provided with 45 ° of chamferings with the edge of movable lock dog contact portion; Between described central axis bottom and positioning key sleeve, cover has spring, and described spring bottom is fixed on the internal diameter contraction place of positioning key sleeve tail end, and spring top contacts with the end face of central axis middle part projection.
2. presetting system restriction choke according to claim 1, is characterized in that, pin hole one and the pin hole two on the sidewall of described interior fishing neck middle part, radially offered are respectively four pin holes of right-angled intersection.
3. presetting system restriction choke according to claim 1, it is characterized in that, the part that described positioning key sleeve medial surface contacts with central axis top is provided with two circle grooves one vertically, the width of described groove one is greater than the width at external diameter expansion place, central axis top, in the positioning key sleeve lateral wall between described two circle grooves one, is radially provided with a pin hole three.
4. presetting system restriction choke according to claim 1, is characterized in that, on the lateral wall that in described restriction choke, positioning key sleeve tail end is connected with restriction choke joint junction, also cover has black box, and described black box is made up of seven rubber seal.
5. presetting system restriction choke according to claim 1, is characterized in that, described restriction choke joint bottom is also threaded with lower contact front end, and described lower contact tail end internal-and external diameter all shrinks, and lower contact tail end is provided with internal thread.
6. presetting system restriction choke according to claim 1, is characterized in that, described connection of thread is equipped with interior hexagonal lock-screw and O type circle.
7. presetting system restriction choke according to claim 1, is characterized in that, the external diameter of described interior fishing neck is 69.5mm, and the internal diameter of interior fishing neck oral area is 58.75mm.
8. for throwing in the delivery tool of the arbitrary described presetting system restriction choke of claim 1-7, it is characterized in that, comprise mandrel, positioning sleeve and guide probe, described mandrel is threaded with positioning sleeve from inner side, positioning sleeve is threaded with the top of guide probe from inner side, and the tail end of described guide probe is tapered; The outer middle side part of described mandrel has a circle fin, there is checking sleeve in mandrel outside between fin and positioning sleeve also cover, described checking sleeve can move vertically in mandrel outside, and checking sleeve is arrow shaped near one end of mandrel fin, and its external diameter is greater than the external diameter of fin; Described checking sleeve is radially provided with four pin holes four of right-angled intersection near one end of positioning sleeve, the junction of described positioning sleeve and mandrel is radially provided with four pin holes five of right-angled intersection; The fin in described mandrel outside is 13.87mm to the length of positioning sleeve and mandrel junction; Described positioning sleeve middle part is provided with back-up ring, and described back-up ring is fixedly connected with by pin with positioning sleeve.
9. delivery tool according to claim 8, is characterized in that, described positioning sleeve is evenly provided with four grooves two vertically with the outside of checking sleeve junction.
10. for salvaging the fishing tool push rod of the arbitrary described presetting system restriction choke of claim 1-7, it is characterized in that, comprise top connection and push rod, described push rod top is threaded with top connection bottom from inner side, and push rod bottom is taper; Described fishing tool push rod external diameter is 43mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320642523.7U CN203783547U (en) | 2013-10-18 | 2013-10-18 | Prefabricated throttle, throwing-in tool of prefabricated throttle and pushing rod of fishing tool of prefabricated throttle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320642523.7U CN203783547U (en) | 2013-10-18 | 2013-10-18 | Prefabricated throttle, throwing-in tool of prefabricated throttle and pushing rod of fishing tool of prefabricated throttle |
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| Publication Number | Publication Date |
|---|---|
| CN203783547U true CN203783547U (en) | 2014-08-20 |
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| CN201320642523.7U Expired - Lifetime CN203783547U (en) | 2013-10-18 | 2013-10-18 | Prefabricated throttle, throwing-in tool of prefabricated throttle and pushing rod of fishing tool of prefabricated throttle |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107558961A (en) * | 2016-06-30 | 2018-01-09 | 中国石油天然气股份有限公司 | A kind of underground throttle device |
| CN111502611A (en) * | 2020-04-07 | 2020-08-07 | 大庆油田有限责任公司 | Mechanical gas well adjustable choke and adjusting method |
| CN114439419A (en) * | 2020-11-06 | 2022-05-06 | 中国石油化工股份有限公司 | Sand prevention sliding sleeve |
| CN117231167A (en) * | 2023-11-09 | 2023-12-15 | 四川圣诺油气工程技术服务有限公司 | Releasing structure of acid liquid dumping cylinder |
-
2013
- 2013-10-18 CN CN201320642523.7U patent/CN203783547U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107558961A (en) * | 2016-06-30 | 2018-01-09 | 中国石油天然气股份有限公司 | A kind of underground throttle device |
| CN107558961B (en) * | 2016-06-30 | 2019-09-06 | 中国石油天然气股份有限公司 | A kind of underground throttle device |
| CN111502611A (en) * | 2020-04-07 | 2020-08-07 | 大庆油田有限责任公司 | Mechanical gas well adjustable choke and adjusting method |
| CN111502611B (en) * | 2020-04-07 | 2022-04-26 | 大庆油田有限责任公司 | Mechanical gas well adjustable choke and adjusting method |
| CN114439419A (en) * | 2020-11-06 | 2022-05-06 | 中国石油化工股份有限公司 | Sand prevention sliding sleeve |
| CN117231167A (en) * | 2023-11-09 | 2023-12-15 | 四川圣诺油气工程技术服务有限公司 | Releasing structure of acid liquid dumping cylinder |
| CN117231167B (en) * | 2023-11-09 | 2024-02-02 | 四川圣诺油气工程技术服务有限公司 | Releasing structure of acid liquid dumping cylinder |
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Effective date of registration: 20201109 Address after: 100007 Dongcheng District, Dongzhimen, China, North Street, No. 9 Oil Mansion, No. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CHINA NATIONAL PETROLEUM CORPORATION CHUANQING DRILLING ENGINEERING Co. Address before: 710018 Shaanxi province Xi'an Weiyang Changqing Changqing prosperous Park District Building Room 1207 Patentee before: CHINA NATIONAL PETROLEUM CORPORATION CHUANQING DRILLING ENGINEERING COMPANY LIMITED CHANGQING DOWNHOLE TECHNOLOGY Co. |
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Granted publication date: 20140820 |
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