CN101892823A - Method for throwing and fishing downhole choke without steel wire in natural gas well - Google Patents
Method for throwing and fishing downhole choke without steel wire in natural gas well Download PDFInfo
- Publication number
- CN101892823A CN101892823A CN2010101143127A CN201010114312A CN101892823A CN 101892823 A CN101892823 A CN 101892823A CN 2010101143127 A CN2010101143127 A CN 2010101143127A CN 201010114312 A CN201010114312 A CN 201010114312A CN 101892823 A CN101892823 A CN 101892823A
- Authority
- CN
- China
- Prior art keywords
- throttle device
- underground throttle
- spring
- pawl spring
- underground
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 28
- 239000010959 steel Substances 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000002343 natural gas well Substances 0.000 title abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 239000010985 leather Substances 0.000 claims description 31
- 210000002445 nipple Anatomy 0.000 claims description 31
- 238000007789 sealing Methods 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 230000001174 ascending effect Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 24
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 14
- 238000012360 testing method Methods 0.000 abstract description 10
- 239000003345 natural gas Substances 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000011065 in-situ storage Methods 0.000 abstract 3
- 241000283216 Phocidae Species 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 4
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 238000011982 device technology Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000009975 flexible effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
Images
Landscapes
- Mechanically-Actuated Valves (AREA)
Abstract
The method for throwing and fishing the underground throttleer without steel wires in the natural gas well is applied to the gas production of the natural gas well. Before delivery, a working barrel outside the underground throttle is firstly put into a natural gas well to a designed depth. Then, a catching and throwing device and an underground throttle core are installed and the underground throttle core is thrown, the underground throttle core enters an outer working barrel of the underground throttle and is automatically locked, and the throwing of the underground throttle core is completed. And during fishing, the catching and fishing device and the fisher are installed and the underground throttle core is fished. The lifting force of the natural gas flow is utilized to lift the fisher and the underground restrictor core to the ground together. The effect is as follows: the in-situ operation of the underground restrictor is more convenient while the using effect of the underground restrictor is not reduced, and compared with the process of using a well testing vehicle to throw and drag the underground restrictor, the in-situ operation method has the advantages of simple throwing and dragging process and simple and convenient in-situ operation, not only can accurately and reliably throw the underground restrictor, but also saves throwing and dragging time and reduces throwing and dragging cost.
Description
Technical field
The present invention relates to oil field natural gas extraction technical field, particularly a kind of natural gas well adopts the method and the underground throttle device of underground throttle device exploitation.
Background technology
In recent years, in the recovery process of the natural gas well, the increasing generation of adopting the underground throttle device technology to prevent pit shaft hydrate in the gas well gas production process, through updating of on-the-spot application and technician, the underground throttle device technology is constantly improved.The most frequently used underground throttle device " the movable underground throttle device of oil pipe that is to be applicable to 2-7/8 in using at the scene at present.This movable underground throttle device can set in projected depth according to the design needs, adopts the wire rope pulling.As Chinese patent notification number: CN2732993Y, " novel gas well underground throttle device ".By the down-hole fastener, salvage cam fastener, self sealss mechanism, mechanical sealing mechanism and flow nipple certainly and form.The sleeve mechanism truck is fixed, salvaging, sealing and throttling be in one, cam fastener top is provided with big shear pin and fishing head, self sealss mechanism is provided with little shear pin, flow nipple is installed in fishing head inside, and the shear pin of a whole set of structure by cutting off different-diameter realized cam fastening, self sealss, pneumatic machinery sealing and with the free pulling of wire rope in that oil pipe is inner.Chinese patent publication number and for example: CN 2758458Y, " gas well presetting system underground throttle device ", comprise the fuse combination that seating nipple and lock dog axle, locating ring, lock dog, lock dog body, V-shaped seal ring, flow nipple etc. are formed, seating nipple is connected on the production tube design attitude in advance, fuse combination is adopted wire rope to throw in instrument by special use and fuse is lowered in the seating nipple that presets the back and hits fuse down and make lock dog enter the seating nipple inside groove to finish the underground throttle device input, lock dog body lower end is equipped with exterior seal ring and oil pipe sealing, and the bottom is equipped with flow nipple.Can take out fuse in non-resistance ground when salvaging, flow nipple field adjustable and replacing are very convenient.
Said pulling is two work progresss throwing in and salvage.Present movable underground throttle device need use steel wire to transfer in the well when throwing in or salvage and construct.
Present movable underground throttle device is thrown in operation sequence: at first underground throttle device is connected with downhole tools such as weighted lever, bumper jars, then tool string is put into the well head lubricator, lubricator is installed on the well head,, need carries out the installation of lubricator with crane because lubricator is longer.After lubricator installs, open head valve, with the test steel wire underground throttle device and tool string are lowered in the oil pipe, after arriving projected depth, suddenly stop, the resilience rapidly under the flexible effect of steel wire of underground throttle device this moment is under the effect of inertia force, the underground throttle device slips opens, underground throttle device tentatively is anchored on the tube inner wall,, makes bumper jar upwards produce a vibration power then with carrying steel wire on the well testing truck, under the effect of this jarring force, cut off the pin on the underground throttle device, after pin was cut off, underground throttle device was thrown off with the test steel wire, meanwhile, under the effect of underground throttle device contained spring, make the sealing cup spreading on the underground throttle device, steel wire is tripped out well head, lay down the lubricator on the well head, like this, just finished the input of underground throttle device.
Present movable underground throttle device is salvaged operation sequence: fishing tool is connected on the test steel wire of well testing truck, lubricator is installed, then in the lubricator with fishing tool string G.I.H, when arriving the position of underground throttle device, clash into underground throttle device at first downwards, the underground throttle device slips is unclamped, in the bump underground throttle device, finish docking of fisher and underground throttle device, carrying steel wire then on the well testing truck will mention on the underground throttle device in the lubricator, close tubing valve, lay down lubricator, finish the salvage of underground throttle device.
From top narration as can be seen, the not only used vehicle of the pulling work of movable underground throttle device is many, needs personnel many, the operation sequence complexity, and also duty cycle is long, and pulling expense height can not satisfy the low-cost needs of exploiting.
Summary of the invention
The objective of the invention is: the method that a kind of throwing and fishing out underground restrictor from gas well without utilizing steel wires is provided, do not use during pulling and carry or transfer steel wire on the well testing truck, rely on the gravity of underground throttle device self can finish the input of underground throttle device when throwing in underground throttle device, utilize the lift energy of gas well output gas can finish the salvaging of underground throttle device when salvaging underground throttle device.Reach and simplify procedures the pulling cost of reduction underground throttle device, shortening engineering time.Overcome the operation sequence complexity that present movable underground throttle device exists in the pulling process, and duty cycle is long, the deficiency that the pulling expense is high.
Another object of the present invention provides a kind of natural gas well of realizing and exempts from the kit and the underground throttle device of wire Launching and Bailing, makes the method energy smooth implementation of above-mentioned pulling underground throttle device.
The technical solution used in the present invention is: the method for throwing and fishing out underground restrictor from gas well without utilizing steel wires is characterized in that:
A, following gas production tubing string: at first with the underground throttle device outer working tube, be connected on the oil pipe, then the underground throttle device outer working tube arrived the downhole designs degree of depth down with tubing string, set well head, production tree is installed, close the production tree tubing valve by oil connection.
B, installation are caught throw in catcher and underground throttle device core and are thrown in the underground throttle device core: the fishing head and the seizure pawl spring of catching throw in catcher of underground throttle device core are joined; To catch the lower contact of throw in catcher then and receive on the wellhead assembly, open the tubing valve of wellhead assembly then, rotate the handle of catching throw in catcher, and catch the seizure pawl spring of throw in catcher and open, the underground throttle device core will be dropped in the well.The underground throttle device core relies on deadweight to fall, and the underground throttle device core enters in the underground throttle device outer working tube and automatically locks, and has finished the input of underground throttle device core.Can carry out normal gas production.
C, installation are caught throw in catcher and fisher and are salvaged the underground throttle device core: when needing to take out the underground throttle device core, at first the fishing rod of fisher and the seizure pawl spring of seizure throw in catcher are joined; Open the tubing valve of wellhead assembly then, rotate the handle of catching throw in catcher, catch the seizure pawl spring of throw in catcher and open, fisher is dropped in the well.Fisher relies on deadweight to fall.When fisher arrived underground throttle device top, fisher relied on descending impact force that the fishing head of underground throttle device is connected with the seizure pawl spring of fisher, and the air communication of the down-hole fishing head of crossing underground throttle device enters in the fisher at this moment.Open the tubing valve of wellhead assembly then, enter air communication in the fisher and cross the pore that fisher salvages on the urceolus leather cup is expanded, leather cup seals with tube inner wall.Under the thrust of air-flow, fisher begins along tube inner wall up, and the locking bar that the seizure pawl spring of fisher drives in the underground throttle device is up, underground throttle device core and automatic unlocking, fisher continues up, and the underground throttle device core is taken out of in the underground throttle device outer working tube.Under the rolling action of ascending air, fisher and underground throttle device core are given rise to ground together.Catch by the input catcher that is installed on the wellhead assembly.Close the tubing valve of wellhead assembly, lay down and throw in catcher and underground throttle device outer working tube 17, finish the salvaging of underground throttle device core.The pressure of down-hole natural gas should can use fisher that the underground throttle device core is salvaged out greater than 0.35Mpa, and general gas well pressure can both reach greater than 0.35Mpa.
Adopt the method for throwing and fishing out underground restrictor from gas well without utilizing steel wires, employed instrument mainly contains catches throw in catcher, fisher and underground throttle device.The effect of catching throw in catcher is to throw in underground throttle device and fisher respectively; The effect of fisher is to salvage after the underground throttle device release; It is the effect of the natural gas flow in the pit shaft being played the throttling step-down in normal gas production is produced that underground throttle device mainly acts on.
Introduce structure, function and the operating principle of catching throw in catcher, fisher and underground throttle device below respectively:
One, catches throw in catcher 30
Catching throw in catcher mainly is made up of locking nut, handle, release lever, O type O-ring seal, upper end cover, urceolus, back-moving spring, lock sleeve, seizure pawl spring and lower contact.Release lever is the cylinder bodily form, and the top of release lever is fixed with handle by locking nut.Release lever top is the smooth cylinder bodily form, and there is screw thread at the release lever middle part, and there is step the release lever lower end, and the seizure pawl spring is arranged at the top of step; The upper end of catching pawl spring is annular and is enclosed within on the release lever and on the top of release lever lower end step, catches the pawl spring bottom and be divided into six lobes, the oriented projecting inward pawl in the lower end of six lobes.Threaded exterior has lock sleeve cylindraceous at the release lever middle part.There are internal thread and release lever threaded engagement in the lock sleeve upper end, and the oriented projecting inward annular solid of lock sleeve lower inner wall is caught six lobes in pawl spring bottom in lock sleeve lower annular body.Be with back-moving spring on release lever, in the annular space of back-moving spring between release lever and lock sleeve, the back-moving spring lower end withstands on the top of lock sleeve.Seal groove and external seal groove in be stamped the upper end, and there is internal and external threads the lower end of upper end cover; The correlation of each component is: catch pawl spring and be enclosed within on the release lever, spacing by the bottom limited step on the release lever, the lower surface of back-moving spring is pressed in catches on the pawl spring, external screw thread on the release lever is connected with internal thread on the lock sleeve, external screw thread on the lock sleeve is connected with internal thread on the upper end cover, and upper end cover lower end external screw thread is connected with the urceolus upper end.Lock sleeve is in urceolus, and release lever, back-moving spring and seizure pawl spring are in lock sleeve.Handle is fixed on the release lever by locking nut, O type O-ring seal is housed in the interior seal groove on the upper end cover, gap between sealed upper end lid and the release lever, O type O-ring seal is housed in the external seal groove on the upper end cover, gap between sealed upper end lid and the urceolus, lower contact is connected on the bottom of urceolus, the gap between lower contact end face extruding O type O-ring seal sealing lower contact and the urceolus.The oil tube external thread of lower contact lower end can be connected with well head.
The operating principle of catching throw in catcher is: when throwing in the underground throttle device core, the fishing head of underground throttle device core is joined with the seizure pawl spring of catching throw in catcher, then lower contact is threaded onto wellhead assembly top, open tubing valve then, turning handle, release lever drive to be caught the pawl spring compression reseting spring that makes progress, rise to the timesharing of lock sleeve wide diameter portion when catching pawl spring, the fishing head of underground throttle device core just in time withstands on the step of lock sleeve, continue rotary handle, catch the lock pawl of pawl spring and open, the underground throttle device core is dropped in the well, finished the input of underground throttle device core.
Two, the structure of fisher
Fisher mainly is made up of fishing rod, leather cup pressure cap, leather cup, salvaging urceolus, locking spring and seizure pawl spring.Fishing rod is the cylinder bodily form, taper guiding cap is upwards arranged at fishing rod top, and cylinder bodily form footpath bar is arranged at the guiding cap bottom, and the diameter of footpath bar is less than 2～6 millimeters of guiding cap diameters, when seizure throw in catcher that well head is installed can be stuck on the bar outer wall of footpath, the fisher of underground throttle device can be suspended on well head.On the fishing rod outer wall screw thread is arranged, salvage urceolus upper end internal thread and be connected on the external screw thread of fishing rod.Salvage on the outer wall limited step of urceolus upper end and be with annular leather cup, outer wall has external screw thread on salvaging urceolus, and the leather cup pressure cap is connected with the external screw thread of salvaging urceolus, leather cup can be fixed on the urceolus.On the salvaging outer tube wall oblique through hole is arranged, oblique through hole outside opening place is relative with leather cup lower end inwall, and gas can expand the skirt section of leather cup by oblique through hole in the well.There is limited step the fishing rod lower end, and the diameter of limited step is greater than 2～6 millimeters of the diameters of the body of rod; Be with seizure pawl spring and locking spring on the fishing rod body of rod, the locking spring lower end is pressed in catches pawl spring top, and the interior step of annular is pressed on the limited step of fishing rod lower end on the seizure pawl spring, and the locking spring upper end withstands on the interior upper surface of salvaging urceolus; Catching the pawl spring bottom has six bar shaped distinguish, and there is inwardly protruded pawl each distinguish lower end, catches pawl spring bottom distinguish and has radial elastic.Catch the inwardly protruded pawl in pawl spring bottom, pawl can block the fishing head of underground throttle device.There is annular protrusion the lower end of salvaging urceolus, and it is identical with the external diameter of catching six the distinguish compositions in pawl spring bottom to salvage urceolus lower end annular protrusion internal diameter, and six distinguish of catching pawl spring can slide up and down in salvaging urceolus lower end annular protrusion.
The operating principle of fisher is: when needs are pulled underground throttle device out in well, at first fisher is installed in and catches in the throw in catcher, the seizure throw in catcher that fisher will be housed then is installed on the well head, opens tubing valve, the handle on the throw in catcher is caught in dextrorotation, and fisher is dropped in the well.Fisher free-falling under the effect of self gravitation, when arriving the position of underground throttle device, rely on descending impact force that the fishing head of underground throttle device is connected with the seizure pawl spring of fisher, open the oil pipe gate then, this moment, the air communication fishing head of crossing underground throttle device of down-hole entered in the fisher, entering air communication in the fisher crosses the pore that fisher salvages on the urceolus leather cup is expanded, under the thrust of air-flow, fisher begins up, the locking bar of catching in the fisher in the pawl spring drive underground throttle device is up, make the underground throttle device release, fisher continues up, the underground throttle device main body is taken out of in the underground throttle device outer working tube, under the rolling action of ascending air, fisher and underground throttle device are given rise to ground together, catch by the input catcher that is installed in well head, close tubing valve, lay down the input catcher, finish the salvaging of underground throttle device.The pressure of down-hole natural gas just can use fisher that underground throttle device is salvaged out greater than 0.35Mpa, and general gas well pressure can both reach greater than 0.35Mpa.
Three, the structure of underground throttle device
Underground throttle device mainly is made up of underground throttle device outer working tube, guide sub, packoff nipple, O RunddichtringO, throttling valve, valve pressure cap, distinguish anchor tip, locking bar, location pawl spring, location pawl spring urceolus, oil connection, locking bar lock assembly, fishing head.There is the external screw thread of the oil pipe of connection the lower end of underground throttle device outer working tube, can be connected with oil pipe; There is the external screw thread of the oil pipe of connection the upper end of underground throttle device outer working tube, can be connected with oil connection, and the oil connection upper end connects oil pipe, and the underground throttle device outer working tube is gone in the well.In the inwall lower end of underground throttle device outer working tube a limited step is arranged, the lower surface seat of cylindrical guide sub that has centre bore is on the limited step of underground throttle device outer working tube.Be connected with the cylindrical seal pipe nipple of being with centre bore at the upper end of guide sub internal thread, the O RunddichtringO is arranged on the outer wall of packoff nipple, make the outer wall of packoff nipple and the inner wall sealing of underground throttle device outer working tube.Be fixed with the throttling valve in packoff nipple centre bore upper end, the throttling valve is the cylinder that centre bore is arranged, and plays the natural gas effect of throttling down-hole.The valve pressure cap is threaded with packoff nipple, and the lower surface of cylinder bodily form valve pressure cap is pressed on the upper surface of throttling valve.The valve pressure cap has centre bore.There is outer step valve pressure cap upper end, is pressed with the cylindrical locking bar of band centre bore outside valve pressure cap top on the step, and the screw top of locking bar is connected with fishing head.On the fishing head outer wall, be with the location pawl spring, and location pawl spring spring pawl aligns with the fluting place of location pawl spring urceolus.The location pawl spring has the radially equal angles distribution of three pawl springs, three pawl spring lower end oriented outer lug spring pawls, and the carrying inclined-plane is arranged at protruding spring pawl top, and guiding surface is arranged at protruding spring pawl bottom; Projection spring pawl can embed in the cannelure on the underground throttle device outer working tube inwall.Distinguish anchor tip lower end is threaded with packoff nipple, and the lower surface of location pawl spring is pressed in annular distinguish anchor tip top, and the lower surface of distinguish anchor tip is pressed on the outer step of throttling valve.On the outer wall of location pawl spring, be with location pawl spring urceolus; The upper end of location pawl spring urceolus is fixed on the outer wall of locking bar by the locking bar lock assembly.Locking bar can slide up and down in the pawl spring of location.The locking bar lock assembly is made up of steel ball, spring and plug wire, and the locking bar lock assembly is in the radial hole of pawl spring urceolus upper end, location, and steel ball slips in the cannelure on the locking bar outer wall.Cannelure on the locking bar outer wall has two, and following groove prevents that restriction choke core locking bar in dropping process from gliding automatically, and top groove prevents that the frictional force of air-flow makes the locking bar release in the normal productive process.The lower surface of location pawl spring urceolus is pressed in distinguish anchor tip top.
The operating principle of underground throttle device is: when descending the gas production tubing string, at first the underground throttle device outer working tube is connected on the oil pipe by oil connection, then the underground throttle device outer working tube is arrived projected depth down with oil pipe, sit well head, close tubing valve.Underground throttle device is installed in the seizure throw in catcher, the seizure throw in catcher that underground throttle device will be housed then is installed on the well head, open tubing valve, the throw in catcher handle is caught in dextrorotation, underground throttle device is dropped in the well, when entering the oil pipe mouth, location pawl spring on the underground throttle device shrinks, descending under the effect of underground throttle device self gravitation, when arriving underground throttle device outer working tube position, the location pawl spring enters in the interior cannelure of underground throttle device outer working tube, and locate pawl spring and enter in the cannelure under the elastic reaction of self this moment, in the location open while of pawl spring, locking bar also enters lock-out state under the effect of descending impact force, the lock pawl of location pawl spring can not be shunk, with underground throttle device being locked in the overcoat cannelure tightly, both finished the input of underground throttle device this moment, and opened tubing valve and get final product ordinary production.Detailed elaboration has been done in the salvaging of underground throttle device in the operating principle of fisher, here repeat no more.
Beneficial effect of the present invention: throwing and fishing out underground restrictor from gas well without utilizing steel wires method of the present invention, when not reducing the underground throttle device result of use, make the execute-in-place of underground throttle device convenient more, compare with use well testing truck pulling underground throttle device technology, it is simple to have pulling technology, and the advantage that execute-in-place is easy can not only be thrown in underground throttle device accurately and reliably, save the pulling time simultaneously, reduced the pulling expense.
Instrument of the present invention is simple, and is rational in infrastructure, and pulling is reliable, low to operating personnel's technical requirements, safe coefficient height, the catching phenomenon in the time of conventional underground throttle device can not occurring and salvage.
Existing underground throttle device pulling needs well testing truck driver 1 people usually, hoistman 2 people, operative employee 2 people, underground throttle device of pulling approximately needs 1 day time, and the present invention only needs driver 1 people, operative employee 1 people can finish pulling work, and pulling once approximately needs 2 hour time, has still all reduced cost significantly from the operating time from operating personnel.
The required pulling and running tool of the pulling of existing underground throttle device is many, thereby it is many that the link of problem takes place, and the instrument of pulling underground throttle device of the present invention is few, and reliable operation has improved the safety of pulling.
Comprise 39.7 millimeters (1-9/16 ") oil pipes, 50.8 millimeters (2 ") oil pipe or 73.2 millimeters (use in the 2-7/8 ") oil pipe and all adopt underground throttle device structure of the present invention or that have operational characteristic of the present invention, all belong to category of the present invention.
Description of drawings
Fig. 1 is that the present invention catches throw in catcher 30 structural profile schematic diagrames;
Fig. 2 is fisher 35 structural profile schematic diagrames of the present invention;
Fig. 3 is underground throttle device 31 structural profile schematic diagrames of the present invention;
Fig. 4 is the tubular column structure schematic diagram that the natural gas well drops into underground throttle device 31;
Fig. 5 is the tubular column structure schematic diagram that the natural gas well is salvaged underground throttle device 31.
Among the figure, 1. locking nut, 2. handle, 3. release lever, 4.O type O-ring seal, 5. upper end cover, 6. urceolus, 7. back-moving spring, 8. lock sleeve, 9. seizure pawl spring, 10. lower contact, 11. fishing rods, 12. the leather cup pressure cap, 13. leather cups, 14. salvage urceolus, 15. locking spring, 16. catch pawl spring, 17. underground throttle device outer working tubes, 18. guide sub, 19. packoff nipples, 20.0 RunddichtringOs, 21. the throttling valve, 22. valve pressure caps, 21. distinguish anchor tips, 24. locking bar, 25. location pawl springs, 26. location pawl spring urceolus, 27. oil connection, 28. locking bar lock assemblies, 29. fishing heads, 30. the seizure throw in catcher, 31. underground throttle devices, 32. wellhead assemblies, 33. sleeve pipe, 34. oil pipes, 35. fishers.
The specific embodiment
Embodiment 1: the method with a throwing and fishing out underground restrictor from gas well without utilizing steel wires is an example, and the present invention is described in further detail.
With a bite oil pipe 34 internal diameters is 40 millimeters, and underground throttle device 31 depth of settings are that 2000 meters gas well is an example, and the present invention is described in further detail.
The method of throwing and fishing out underground restrictor from gas well without utilizing steel wires:
A, following gas production tubing string: at first with underground throttle device outer working tube 17, be connected on the oil pipe 34 by oil connection 27, then underground throttle device outer working tube 17 arrived the downhole designs degree of depth down with tubing string, set well head, wellhead assembly 32 is installed, is closed wellhead assembly 32 tubing valves.
Consult Fig. 4.Throwing in tubing string is made up of seizure throw in catcher 30, underground throttle device 31, wellhead assembly 32, sleeve pipe 33, oil pipe 34, underground throttle device outer working tube 17.The oil pipe 34 that 40 millimeters of internal diameters are arranged in sleeve pipe 33, connecting underground throttle device outer working tube 17 in the 2000 meters degree of depth in oil pipe 34 bottoms with tubing thread wellhead assembly 32 is being housed on well head, catching throw in catcher 30 is installed on the wellhead assembly 32, catch throw in catcher 30 bottoms underground throttle device 31 is installed, rotary handle 2 can discharge underground throttle device 31 it is dropped in the oil pipe 34, sets on underground throttle device outer working tube 17.
Consult Fig. 5.Fishing string is formed by catching throw in catcher 30, fisher 35, wellhead assembly 32, sleeve pipe 33, oil pipe 34, underground throttle device 31 and underground throttle device outer working tube 17.The oil pipe 34 that 40 millimeters of internal diameters are arranged in sleeve pipe 33, link then underground throttle device outer working tube 17 in the 2000 meters degree of depth in oil pipe 34 bottoms with oil pipe 34, wellhead assembly 32 is housed on well head, catching throw in catcher 30 is installed on the wellhead assembly 32, catch in throw in catcher 30 bottoms fisher 35 is installed, rotary handle 2 discharges fisher 35, and fisher 35 is dropped in the oil pipe 34, and fisher 35 is connected with underground throttle device 31.Under the down-hole pressure effect, fisher 35 and underground throttle device 31 rise to well head, and fisher 35 upper ends are caught throw in catcher 30 with well head and are connected.Throw in catcher 30, fisher 35 and underground throttle device 31 are caught in dismounting.
B, installation are caught throw in catcher 30 and underground throttle device core and are thrown in the underground throttle device core: the fishing head 29 and the seizure pawl spring 9 of catching throw in catcher 30 of underground throttle device core are joined; To catch the lower contact 10 of throw in catcher 30 then receives on the wellhead assembly 32; Open the tubing valve of wellhead assembly 32, rotate the handle 2 of catching throw in catcher 30, catch the seizure pawl spring 9 of throw in catcher 30 and open, the underground throttle device core is dropped in the well.The underground throttle device core enters in the underground throttle device outer working tube 17 and automatically locks, and has finished the input of underground throttle device core.
C, installation are caught throw in catcher 30 and fisher 35 and are salvaged the underground throttle device core: when needing to take out the underground throttle device core, at first the fishing rod 11 of fisher 35 and the seizure pawl spring 9 of seizure throw in catcher 30 are joined; Open the tubing valve of wellhead assembly 32 then, rotate the handle 2 of catching throw in catcher 30, catch the seizure pawl spring 9 of throw in catcher 30 and open, fisher 35 is dropped in the well.Fisher 35 relies on deadweight to fall.When fisher 35 arrived underground throttle device 31 tops, fisher 35 relied on descending impact force that the fishing head 29 of underground throttle device 31 is connected with the seizure pawl spring 16 of fisher 35.Open the tubing valve of wellhead assembly 32 then, enter air communication in the fisher 35 and cross the pore that fisher 35 salvages on the urceolus 14 and leather cup 13 is expanded leather cup 13 and oil pipe 34 inner wall sealings.Under the thrust of air-flow, fisher 35 beginnings are up along oil pipe 34 inwalls, and the locking bar 24 that the seizure pawl spring 16 of fisher 35 drives in the underground throttle device 31 is up, underground throttle device core automatic unlocking; Fisher 35 continues up, and the underground throttle device core is taken out of in underground throttle device outer working tube 17.Under the rolling action of ascending air, fisher 35 and underground throttle device core are given rise to ground together.Catch by the input catcher 30 that is installed on the wellhead assembly 32.Close the tubing valve of wellhead assembly 32 at last, lay down and throw in catcher 30 and underground throttle device outer working tube 17, finish the salvaging of underground throttle device core.
Consult Fig. 1.Catching throw in catcher 30 mainly is made up of locking nut 1, handle 2, release lever 3, O type O-ring seal 4, upper end cover 5, urceolus 6, back-moving spring 7, lock sleeve 8, seizure pawl spring 9 and lower contact 10.Release lever 3 is the cylinder bodily form, and the top of release lever 3 is fixed with a handle 2 by locking nut 1.Release lever 3 tops are the smooth cylinder bodily form, and there is the screw thread of M26 at release lever 3 middle parts, and there is step release lever 3 lower ends, and the pawl spring 9 of seizure is arranged at the top of step; The upper end of catching pawl spring 9 is annular and is enclosed within on the release lever 3 and on the top of release lever 3 lower end steps, catches pawl spring 9 bottoms and be divided into six lobes, the oriented projecting inward 1.5 millimeters pawl in the lower end of six lobes.In release lever 3 middle part threaded exterior lock sleeve 8 cylindraceous is arranged.There are internal thread and release lever 3 threaded engagement in lock sleeve 8 upper ends, and the oriented projecting inward 2 millimeters annular solid of lock sleeve 8 lower inner wall is caught six lobes in pawl spring 9 bottoms in lock sleeve 8 lower annular bodies.Be with back-moving spring 7 on release lever 3, in the annular space of back-moving spring 7 between release lever 3 and lock sleeve 8, back-moving spring 7 lower ends withstand on the top of lock sleeve 8.Upper end cover 5 has interior seal groove and external seal groove, and there are internal thread and external screw thread in upper end cover 5 lower ends.Catching pawl spring 9 is enclosed within on the release lever 3, spacing by the bottom limited step on the release lever 3, the lower surface of back-moving spring 7 is pressed in catches on the pawl spring 9, external screw thread on the release lever 3 is connected with internal thread on the lock sleeve 8, external screw thread on the lock sleeve 8 is connected with internal thread on the upper end cover 5, and the external screw thread on the upper end cover 5 is connected with urceolus 6 upper ends.Lock sleeve 8 is in urceolus 6, and release lever 3, back-moving spring 7 and seizure pawl spring 9 are in lock sleeve 8.Handle 2 is fixed on the release lever 3 by locking nut 1.In the seal groove O type O-ring seal 4 is housed respectively in the twice on the upper end cover 5, gap between sealed upper end lid 5 and the release lever 3, O type O-ring seal is housed in the external seal groove on the upper end cover 5, gap between sealed upper end lid 5 and the urceolus 6, lower contact 10 is connected on the bottom of urceolus 6, an O type O-ring seal is arranged, the gap between sealing lower contact 10 and the urceolus 6 in the lower contact 10.The tubing round thread of lower contact 10 lower ends can be connected with well head.
Consult Fig. 2.Fisher 35 mainly is made up of fishing rod 11, leather cup pressure cap 12, leather cup 13, salvaging urceolus 14, locking spring 15 and seizure pawl spring 16.Fishing rod 11 is the cylinder bodily form, and taper guiding cap is upwards arranged at fishing rod 11 tops, and cylinder bodily form footpath bar is arranged at the guiding cap bottom, and the diameter of footpath bar is 15 millimeters, and the diameter of footpath bar is less than 10 millimeters of guiding cap diameters.The screw thread that M18 is arranged on fishing rod 11 outer walls is salvaged urceolus 14 upper end internal threads and is connected on the external screw thread of fishing rod 11.Salvage on the urceolus 14 upper end outer wall limited steps and be with annular leather cup 13, annular skirt is arranged at the bottom of annular leather cup 13.The external screw thread of M26 is arranged salvaging urceolus 14 upper end outer walls, leather cup pressure cap 12 is connected with the external screw thread of salvaging urceolus 14, leather cup 13 can be fixed on the urceolus.On salvaging urceolus 14 walls six oblique through holes are arranged, oblique through hole outside opening place is relative with leather cup 13 lower end inwalls, and natural gas gas can expand the ring-shaped skirt of leather cup 13 by oblique through hole in the well.The annular skirt expands the back and is adjacent to tube inner wall, and natural gas promotes fisher and moves upward.Fishing rod 11 bottoms are in salvaging urceolus 14.There is limited step fishing rod 11 lower ends, and the diameter of limited step is greater than 2 millimeters of the diameters of the body of rod; On fishing rod 11 bodies of rod, be with one and catch pawl spring 16 and a locking spring 15, locking spring 15 lower ends are pressed in catches pawl spring 16 tops, the interior step of annular of catching pawl spring 16 upper ends is pressed in limited step top, fishing rod 11 lower end, and locking spring 15 upper ends withstand on salvages on the urceolus 14 interior upper surfaces.Six length are arranged at seizure pawl spring 16 bottoms is 100 millimeters, and width is 7.4 millimeters a bar shaped distinguish, and six distinguish lower end inwalls have inwardly protruded pawl, catches pawl spring 16 and adopts spring steel to make, and catches pawl spring 16 bottom distinguish and has elasticity diametrically.Catch the inwardly protruded pawl in pawl spring 16 bottoms, pawl can block the fishing head of underground throttle device.There is annular protrusion the lower end of salvaging urceolus 14, and salvaging urceolus 14 lower end annular protrusion internal diameters is 24 millimeters with the external diameter of catching six the distinguish compositions in pawl spring 16 bottoms, and catching 16 6 distinguish of pawl spring can slide up and down in salvaging urceolus 14 lower end annular protrusions.There are 45 degree slopes the upper surface of annular protrusion and lower surface.
Consult Fig. 3.Underground throttle device 31 mainly is made up of underground throttle device outer working tube 17, guide sub 18, packoff nipple 19, O RunddichtringO 20, throttling valve 21, valve pressure cap 22, distinguish anchor tip 23, locking bar 24, location pawl spring 25, location pawl spring urceolus 26, oil connection 27, locking bar lock assembly 28, fishing head 29.There is the 2-9/16 of the oil pipe of connection the lower end of underground throttle device outer working tube 17 " external screw thread, can with 40.8 millimeters (oil pipe of 1-9/16 ") is connected; There is the 2-9/16 of the oil pipe of connection the upper end of underground throttle device outer working tube 17, and " external screw thread is connected with oil connection 27, and oil connection 27 upper ends connect oil pipe, can and be fixed in the well underground throttle device outer working tube 17 G.I.Hs.The limited step that a protrusion is arranged in the inwall lower end of underground throttle device outer working tube 17, the lower surface seat of cylindrical guide sub 18 that has centre bore is on the limited step of underground throttle device outer working tube 17.At the upper end of the guide sub 18 internal thread cylindrical seal pipe nipple 19 that to be connected with a diameter be 6 millimeters centre bores, twice O RunddichtringO 20 is arranged on the outer wall of packoff nipple 19, make the outer wall of packoff nipple 19 and the inner wall sealing of underground throttle device outer working tube 17.
Be fixed with a throttling valve 21 in packoff nipple 19 centre bores upper end, throttling valve 21 is cylinders that centre bore is arranged, and center-hole diameter is 2.2 millimeters, plays natural gas effect under the catchpit.Valve pressure cap 22 is threaded with packoff nipple 19, and the lower surface of cylinder bodily form valve pressure cap 22 is pressed on the upper surface of throttling valve 21.Valve pressure cap 22 has 6 millimeters centre bores.There is outer step valve pressure cap 22 upper ends, are pressed with the cylindrical locking bar 24 of band centre bore outside valve pressure cap 22 tops on the step, and the screw top of locking bar 24 is connected with fishing head 29.On fishing head 29 outer walls, be with a location pawl spring 25, and location pawl spring 25 spring pawls align with the fluting place of location pawl spring urceolus 26.Location pawl spring 25 have three pawl springs radially equal angles distribute, three pawl spring lower end oriented outer lug spring pawls, protruding spring pawl top is gradient to be 45 ° carrying inclined-plane, protruding spring pawl bottom is gradient to be 13 ° guiding surface; Projection spring pawl can embed in the cannelure on underground throttle device outer working tube 17 inwalls, 4 millimeters of the degree of depth of cannelure.Distinguish anchor tip 23 lower ends are threaded with packoff nipple 19, and the lower surface of location pawl spring 25 is pressed in annular distinguish anchor tip 23 tops, and the lower surface of distinguish anchor tip 23 is pressed on the throttling valve 21 outer steps.On the outer wall of location pawl spring 25, be with location pawl spring urceolus 26; The upper end of location pawl spring urceolus 26 is fixed on the outer wall of locking bar 24 by three equally distributed locking bar lock assemblies 28.Locking bar 24 can slide up and down in the pawl spring 25 of location.Locking bar lock assembly 28 is made up of steel ball, spring and plug wire, and locking bar lock assembly 28 is in the radial hole of pawl spring urceolus 26 upper ends, location, and steel ball slips in the cannelure on locking bar 24 outer walls.Cannelure on locking bar 24 outer walls has two.The lower surface of location pawl spring urceolus 26 is pressed in distinguish anchor tip 23 tops.
Claims (4)
1. the method for a throwing and fishing out underground restrictor from gas well without utilizing steel wires is characterized in that:
A, following gas production tubing string: at first with underground throttle device outer working tube (17), be connected on the oil pipe (34) by oil connection (27), then underground throttle device outer working tube (17) is arrived the downhole designs degree of depth down with tubing string, set well head, wellhead assembly (32) is installed, is closed wellhead assembly (32) tubing valve;
B, installation are caught throw in catcher (30) and underground throttle device core and are thrown in the underground throttle device core: the fishing head (29) and the seizure pawl spring (9) of catching throw in catcher (30) of underground throttle device core are joined; To catch the lower contact (10) of throw in catcher (30) then receives on the wellhead assembly (32); Open the tubing valve of wellhead assembly (32), rotate the handle (2) of catching throw in catcher (30), catching the seizure pawl spring (9) of throw in catcher (30) opens, the underground throttle device core is dropped in the well, the underground throttle device core enters in the underground throttle device outer working tube (17) and automatically locks, and finishes the input of underground throttle device core;
C, installation are caught throw in catcher (30) and fisher (35) and are salvaged the underground throttle device core: when needing to take out the underground throttle device core, at first the fishing rod (11) of fisher (35) and the seizure pawl spring (9) of seizure throw in catcher (30) are joined; Open the tubing valve of wellhead assembly (32) then, rotate the handle (2) of catching throw in catcher (30), catching the seizure pawl spring (9) of throw in catcher (30) opens, fisher (35) is dropped in the well, fisher (35) relies on deadweight to fall, when fisher (35) arrives underground throttle device (31) top, fisher (35) relies on descending impact force that the fishing head (29) of underground throttle device (31) is connected with the seizure pawl spring (16) of fisher (35), open the tubing valve of wellhead assembly (32) then, entering air communication in the fisher (35) crosses the pore that fisher (35) salvages on the urceolus (14) leather cup (13) is expanded, leather cup (13) and oil pipe (34) inner wall sealing, under the thrust of air-flow, fisher (35) beginning is up along oil pipe (34) inwall, the locking bar (24) that the seizure pawl spring (16) of fisher (35) drives in the underground throttle device (31) is up, underground throttle device core automatic unlocking; Fisher (35) continues up, the underground throttle device core is taken out of in underground throttle device outer working tube (17), under the rolling action of ascending air, fisher (35) and underground throttle device core are given rise to ground together, catch by the input catcher (30) that is installed on the wellhead assembly (32); Close the tubing valve of wellhead assembly (32) at last, lay down and throw in catcher (30) and underground throttle device outer working tube (17), finish the salvaging of underground throttle device core.
2. the method for throwing and fishing out underground restrictor from gas well without utilizing steel wires according to claim 1, it is characterized in that: described seizure throw in catcher (30) is mainly by locking nut (1), handle (2), release lever (3), O type O-ring seal (4), upper end cover (5), urceolus (6), back-moving spring (7), lock sleeve (8), catching pawl spring (9) and lower contact (10) forms, release lever (3) is the cylinder bodily form, the top of release lever (3) is fixed with handle (2) by locking nut (1), smooth sealing surface is arranged at release lever (3) top, there is screw thread at release lever (3) middle part, there is step release lever (3) lower end, and seizure pawl spring (9) is arranged at the top of step; The upper end of catching pawl spring (9) is enclosed within the top of release lever (3) step for annular, catch pawl spring (9) bottom and be divided into six lobes, the oriented projecting inward pawl in the lower end of six lobes, threaded exterior has lock sleeve cylindraceous (8) at release lever (3) middle part, there are internal thread and release lever (3) threaded engagement in lock sleeve (8) upper end, the oriented projecting inward annular solid of lock sleeve (8) lower inner wall, catch six lobes in pawl spring (9) bottom in lock sleeve (8) lower annular body, on release lever (3), be with back-moving spring (7), in the annular space of back-moving spring (7) between release lever (3) and lock sleeve (8), back-moving spring (7) lower end withstands on the top of lock sleeve (8), upper end cover (5) has interior seal groove and external seal groove, and has internal and external threads; Catching pawl spring (9) is enclosed within on the release lever (3), spacing by the bottom limited step on the release lever (3), the lower surface of back-moving spring (7) is pressed in catches on the pawl spring (9), external screw thread on the release lever (3) is connected with internal thread on the lock sleeve (8), external screw thread on the lock sleeve (8) is connected with internal thread on the upper end cover (5), external screw thread on the upper end cover is connected with (7), handle (2) is fixed on the release lever (3) by locking nut (1), O type O-ring seal (4) is housed in the interior seal groove on the upper end cover (5), gap between sealed upper end lid (5) and the release lever (3), O type O-ring seal (4) is housed in the external seal groove on the upper end cover (5), gap between sealed upper end lid (5) and the urceolus (6), lower contact (10) is connected on the bottom of urceolus (6), the gap between lower contact end face extruding O type O-ring seal (4) sealing lower contact (10) and the urceolus (6).
3. the method for throwing and fishing out underground restrictor from gas well without utilizing steel wires according to claim 1, it is characterized in that: described fisher (35), mainly form by fishing rod (11), leather cup pressure cap (12), leather cup (13), salvaging urceolus (14), locking spring (15) and seizure pawl spring (16); Fishing rod (11) is the cylinder bodily form, taper guiding cap is upwards arranged at fishing rod (11) top, cylinder bodily form footpath bar is arranged at the guiding cap bottom, the diameter of footpath bar is less than 2～6 millimeters of guiding cap diameters, on fishing rod (11) outer wall screw thread is arranged, salvaging urceolus (14) upper end internal thread is connected on the external screw thread of fishing rod (11), salvage on the outer wall limited step of urceolus (14) upper end and be with annular leather cup (13), outer wall has external screw thread on salvaging urceolus (14), leather cup pressure cap (12) is connected with the external screw thread of salvaging urceolus (14), leather cup (13) is fixed on the urceolus, on salvaging urceolus (14) wall, oblique through hole is arranged, oblique through hole outside opening place is relative with leather cup (13) lower end inwall, gas can expand the skirt section of leather cup (13) by oblique through hole in the well, there is limited step fishing rod (11) lower end, and the diameter of limited step is greater than 2～6 millimeters of the diameters of the body of rod; On fishing rod (11) body of rod, be with and catch pawl spring (16) and locking spring (15), locking spring (15) lower end is pressed in catches pawl spring (16) top, catch pawl spring (16) the upper end interior step of annular and be pressed on the limited step of fishing rod (11) lower end, locking spring (15) upper end withstands on salvages on the interior upper surface of urceolus (14); Catch pawl spring (16) bottom six bar shaped distinguish are arranged, there is inwardly protruded pawl each distinguish lower end, catch pawl spring (16) bottom distinguish and have radial elastic, catch the inwardly protruded pawl in pawl spring (16) bottom, there is annular protrusion the lower end of salvaging urceolus (14), it is identical with the external diameter of catching six the distinguish compositions in pawl spring (16) bottom to salvage urceolus (14) lower end annular protrusion internal diameter, and catching (16) six distinguish of pawl spring can slide up and down in salvaging urceolus (14) lower end annular protrusion.
4. the method for throwing and fishing out underground restrictor from gas well without utilizing steel wires according to claim 1 is characterized in that: the main underground throttle device outer working tube (17) of described underground throttle device (31), guide sub (18), packoff nipple (19), O RunddichtringO (20), throttling valve (21), valve pressure cap (22), distinguish anchor tip (23), locking bar (24), location pawl spring (25), location pawl spring urceolus (26), oil connection (27), locking bar lock assembly (28), fishing head (29) composition; There is the external screw thread of the oil pipe of connection the lower end of underground throttle device outer working tube (17); The upper end of underground throttle device outer working tube (17) have connection oil pipe external screw thread and be connected with oil connection (27), in the inwall lower end of underground throttle device outer working tube (17) limited step is arranged, the lower surface seat of cylindrical guide sub (18) that has centre bore is on the limited step of underground throttle device outer working tube (17), be connected with the cylindrical seal pipe nipple (19) of band centre bore at the upper end internal thread of guide sub (18), O RunddichtringO (20) is arranged on the outer wall of packoff nipple (19), make the outer wall of packoff nipple (19) and the inner wall sealing of underground throttle device outer working tube (17), be fixed with throttling valve (21) in packoff nipple (19) centre bore upper end, throttling valve (21) is the cylinder that centre bore is arranged, valve pressure cap (22) is threaded with packoff nipple (19), the lower surface of cylinder bodily form valve pressure cap (22) is pressed on the upper surface of throttling valve (21), valve pressure cap (22) has centre bore, there is outer step valve pressure cap (22) upper end, outside valve pressure cap (22) top, be pressed with the cylindrical locking bar (24) of band centre bore on the step, the screw top of locking bar (24) is connected with fishing head (29), on fishing head (29) outer wall, be with location pawl spring (25), and location pawl spring 25 spring pawls align with the fluting place of location pawl spring urceolus (26), location pawl spring (25) has the radially equal angles distribution of three pawl springs, three pawl spring lower end oriented outer lug spring pawls, the carrying inclined-plane is arranged at projection spring pawl top, and guiding surface is arranged at protruding spring pawl bottom; Projection spring pawl can embed in the cannelure on underground throttle device outer working tube (17) inwall, distinguish anchor tip (23) lower end is threaded with packoff nipple (19), the lower surface of location pawl spring (25) is pressed in annular distinguish anchor tip (23) top, the lower surface of distinguish anchor tip (23) is pressed on the outer step of throttling valve (21), is with location pawl spring urceolus (26) on the outer wall of location pawl spring (25); The upper end of location pawl spring urceolus (26) is fixed on the outer wall of locking bar (24) by locking bar lock assembly (28), locking bar (24) can slide up and down in location pawl spring (25), locking bar lock assembly (28) is made up of steel ball, spring and plug wire, locking bar lock assembly (28) is in the radial hole of location pawl spring urceolus (26) upper end, steel ball slips in the cannelure on locking bar (24) outer wall, cannelure on locking bar (24) outer wall has two, and the lower surface of location pawl spring urceolus (26) is pressed in distinguish anchor tip (23) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010114312 CN101892823B (en) | 2010-02-25 | 2010-02-25 | Method for throwing and fishing downhole choke without steel wire in natural gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010114312 CN101892823B (en) | 2010-02-25 | 2010-02-25 | Method for throwing and fishing downhole choke without steel wire in natural gas well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101892823A true CN101892823A (en) | 2010-11-24 |
| CN101892823B CN101892823B (en) | 2013-02-20 |
Family
ID=43102154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010114312 Active CN101892823B (en) | 2010-02-25 | 2010-02-25 | Method for throwing and fishing downhole choke without steel wire in natural gas well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101892823B (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102373894A (en) * | 2011-09-26 | 2012-03-14 | 中国石油天然气股份有限公司 | Throwing and fishing integrated plunger tool and working method thereof |
| CN103899263A (en) * | 2012-12-29 | 2014-07-02 | 中国石油化工股份有限公司 | Device and method for delivering core of injection well |
| CN103982152A (en) * | 2014-05-30 | 2014-08-13 | 四机赛瓦石油钻采设备有限公司 | Device for feeding and retrieving steel wire rope |
| CN104047580A (en) * | 2013-03-13 | 2014-09-17 | 中国石油天然气股份有限公司 | Movable underground throttler and using method thereof |
| CN106468156A (en) * | 2015-08-21 | 2017-03-01 | 中国石油化工股份有限公司 | Down-hole Self adjusting air valve |
| CN106761521A (en) * | 2016-12-23 | 2017-05-31 | 中国石油天然气股份有限公司 | Fishing tool for mechanical restrictor and operation method of fishing tool |
| CN106761517A (en) * | 2016-11-16 | 2017-05-31 | 中国石油集团西部钻探工程有限公司 | Instrument is sent into and fishing device |
| CN107255021A (en) * | 2017-07-28 | 2017-10-17 | 中国石油集团西部钻探工程有限公司 | Deliver unlocking device |
| CN110185406A (en) * | 2019-07-01 | 2019-08-30 | 成都百胜野牛科技有限公司 | Downhole tool catcher |
| CN113123746A (en) * | 2020-01-10 | 2021-07-16 | 成都百胜野牛科技有限公司 | Underground applicator and underground tool assembly |
| CN113494255A (en) * | 2020-03-18 | 2021-10-12 | 中国石油天然气股份有限公司 | Underground anchoring pushing mechanism |
| CN113758735A (en) * | 2020-06-05 | 2021-12-07 | 中国石油天然气股份有限公司 | Jar test device and test method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2732993Y (en) * | 2004-09-24 | 2005-10-12 | 中国石油化工股份有限公司中原油田分公司采油工程技术研究院 | Downhole choke for gas well |
| CN2758458Y (en) * | 2004-11-12 | 2006-02-15 | 西安益友石油科技有限公司 | Presetting type under well choke of gas well |
| US20080041582A1 (en) * | 2006-08-21 | 2008-02-21 | Geirmund Saetre | Apparatus for controlling the inflow of production fluids from a subterranean well |
| CN201144674Y (en) * | 2007-07-25 | 2008-11-05 | 中国石油天然气股份有限公司 | Novel seal structure downhole choke ware |
| US20090044947A1 (en) * | 2007-08-15 | 2009-02-19 | Schlumberger Technology Corporation | Flapper gas lift valve |
-
2010
- 2010-02-25 CN CN 201010114312 patent/CN101892823B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2732993Y (en) * | 2004-09-24 | 2005-10-12 | 中国石油化工股份有限公司中原油田分公司采油工程技术研究院 | Downhole choke for gas well |
| CN2758458Y (en) * | 2004-11-12 | 2006-02-15 | 西安益友石油科技有限公司 | Presetting type under well choke of gas well |
| US20080041582A1 (en) * | 2006-08-21 | 2008-02-21 | Geirmund Saetre | Apparatus for controlling the inflow of production fluids from a subterranean well |
| CN201144674Y (en) * | 2007-07-25 | 2008-11-05 | 中国石油天然气股份有限公司 | Novel seal structure downhole choke ware |
| US20090044947A1 (en) * | 2007-08-15 | 2009-02-19 | Schlumberger Technology Corporation | Flapper gas lift valve |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102373894A (en) * | 2011-09-26 | 2012-03-14 | 中国石油天然气股份有限公司 | Throwing and fishing integrated plunger tool and working method thereof |
| CN102373894B (en) * | 2011-09-26 | 2014-04-02 | 中国石油天然气股份有限公司 | Throwing and Fishing Integrated Plunger Tool |
| CN103899263A (en) * | 2012-12-29 | 2014-07-02 | 中国石油化工股份有限公司 | Device and method for delivering core of injection well |
| CN103899263B (en) * | 2012-12-29 | 2017-12-08 | 中国石油化工股份有限公司 | Injection well fuse delivery device and method |
| CN104047580A (en) * | 2013-03-13 | 2014-09-17 | 中国石油天然气股份有限公司 | Movable underground throttler and using method thereof |
| CN103982152A (en) * | 2014-05-30 | 2014-08-13 | 四机赛瓦石油钻采设备有限公司 | Device for feeding and retrieving steel wire rope |
| CN103982152B (en) * | 2014-05-30 | 2017-02-08 | 四机赛瓦石油钻采设备有限公司 | Device for feeding and retrieving steel wire rope |
| CN106468156A (en) * | 2015-08-21 | 2017-03-01 | 中国石油化工股份有限公司 | Down-hole Self adjusting air valve |
| CN106761517A (en) * | 2016-11-16 | 2017-05-31 | 中国石油集团西部钻探工程有限公司 | Instrument is sent into and fishing device |
| CN106761517B (en) * | 2016-11-16 | 2023-03-24 | 中国石油天然气集团有限公司 | Instrument feeding and salvaging device |
| CN106761521A (en) * | 2016-12-23 | 2017-05-31 | 中国石油天然气股份有限公司 | Fishing tool for mechanical restrictor and operation method of fishing tool |
| CN107255021A (en) * | 2017-07-28 | 2017-10-17 | 中国石油集团西部钻探工程有限公司 | Deliver unlocking device |
| CN110185406A (en) * | 2019-07-01 | 2019-08-30 | 成都百胜野牛科技有限公司 | Downhole tool catcher |
| CN113123746A (en) * | 2020-01-10 | 2021-07-16 | 成都百胜野牛科技有限公司 | Underground applicator and underground tool assembly |
| CN113494255A (en) * | 2020-03-18 | 2021-10-12 | 中国石油天然气股份有限公司 | Underground anchoring pushing mechanism |
| CN113758735A (en) * | 2020-06-05 | 2021-12-07 | 中国石油天然气股份有限公司 | Jar test device and test method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101892823B (en) | 2013-02-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101892823B (en) | Method for throwing and fishing downhole choke without steel wire in natural gas well | |
| CN201486515U (en) | Switch type releasing packer | |
| CN105484696B (en) | Blanking plug in reclaimed oil pipe | |
| US7231970B2 (en) | Non-rotational casing hanger and seal assembly running tool | |
| CN204252973U (en) | Split type downhole choke ware | |
| CN201620796U (en) | Fishing tool for downhole choke | |
| CN103527128A (en) | Fishing tool for natural gas exploitation underground throttler and operation method thereof | |
| CN201627572U (en) | Underground throttle | |
| CN102808587B (en) | Double-elastic-clamp in-place locking wire line coring suspension positioning mechanism | |
| CN111075407A (en) | Gas well full life cycle downhole throttling production device and use method thereof | |
| CN105201446A (en) | Bidirectional pressure-bearing blanking plug | |
| CN201062505Y (en) | Hollow suspension sub-releasing axle plug | |
| CN105064940A (en) | Built-in continuous oil tube well completion tube column and construction method thereof | |
| RU154511U1 (en) | PACKER DRILLING WITH A LANDING TOOL | |
| CN114809980B (en) | Hydraulic temporary bridge plug | |
| CN103277049A (en) | Slip type whipstock | |
| CN202338261U (en) | Repeated oil pipe plug | |
| CN107780862B (en) | Fishing device for underground throttler | |
| CN204175233U (en) | Desirablely bore anchor packer | |
| RU154295U1 (en) | PACKER DRILLED | |
| CN201159073Y (en) | Natural gas down-hole dropping equipment | |
| CN202745834U (en) | Preset underground throttle for non-rope throwing | |
| CN202596695U (en) | Downhole gas-injection tubular column | |
| CN202745781U (en) | Fishing tool for natural gas exploitation underground throttler | |
| CN202132013U (en) | Underground blow-out preventing device for electric pump well |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |