CN106014355A - Downhole tool for changing downhole oil nozzle size through wellhead pressurization - Google Patents
Downhole tool for changing downhole oil nozzle size through wellhead pressurization Download PDFInfo
- Publication number
- CN106014355A CN106014355A CN201610458149.3A CN201610458149A CN106014355A CN 106014355 A CN106014355 A CN 106014355A CN 201610458149 A CN201610458149 A CN 201610458149A CN 106014355 A CN106014355 A CN 106014355A
- Authority
- CN
- China
- Prior art keywords
- spindle
- urceolus
- rupture disk
- upper spindle
- pipe nipple
- 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.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/063—Valve or closure with destructible element, e.g. frangible disc
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/08—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
Abstract
The invention discloses a downhole tool for changing the downhole oil nozzle size through wellhead pressurization and mainly solves the problem that sealing of downhole oil nozzles fails easily during freezing and plugging of inner walls of oil pipes due to waxing. The tool is characterized in that the outer part of the lower end of an upper joint (1) is in threaded connection with an upper mandrel outer barrel (2); the lower part of the upper mandrel outer barrel (2) is in threaded connection with an outer transition barrel (6) and a lower rupture disk outer barrel (7) sequentially; the lower part of the lower rupture disk outer barrel (7) is connected with a ball valve outer barrel (9); the lower end of the ball valve outer barrel (9) makes contact with a lower joint (15). The downhole tool can carry different sizes of throttling oil nozzles simultaneously to meet requirements under different working conditions, so that the tool has the wide application range and works reliably.
Description
Technical field
The present invention relates to a kind of oilfield, a kind of downhole tool utilizing well head pressurizing altered subsurface choke size.
Background technology
At present condensate gas well formation testing mainly being used to subsurface choke, general subsurface choke is all to utilize steel wire to throw in, and there is certain limitation.When removing steel wire instrument, because tube inner wall hangs wax frozen block, it may occur that steel wire instrument is hampered phenomenon, before and after making throttling, pressure reduction is very big, causes throttling oil nozzle seal member Problem of Failure.
Summary of the invention
In order to overcome the existing subsurface choke can the deficiency of easy seal failure when tube inner wall hangs wax frozen block, the present invention provides a kind of downhole tool utilizing well head pressurizing altered subsurface choke size, this downhole tool can carry various sizes of throttling oil nozzle simultaneously, to adapt to the requirement of different operating mode, so that its wide accommodation, reliable operation.
The technical scheme is that a kind of downhole tool utilizing well head pressurizing altered subsurface choke size, including top connection, lower contact, it is characterized in that: described top connection lower end external screw-thread connects upper spindle urceolus, the most threaded transition in upper spindle urceolus bottom urceolus, lower rupture disk urceolus, lower rupture disk urceolus bottom connects ball valve urceolus, and ball valve urceolus lower end contacts with lower contact；
Described top connection lower end internal by cut off and be inlaid with upper spindle on connection upper spindle, and top connection sidewall and fix lock dog, upper spindle has and fixes the draw-in groove that lock dog is corresponding with upper spindle；Described upper spindle lower end is connected to lower spindle by connecting ZHUANLIAN, and described connection pawl is provided with jerk-finger, and lower spindle outer wall has the draw-in groove corresponding with the jerk-finger connecting on pawl；Cut off under passing through between described transition urceolus lower end and lower spindle and be connected；
Described lower contact top threaded ball seat pipe nipple, ball seat pipe nipple top is provided with flow throttling ball valves assembly, and flow throttling ball valves assembly top is connected with lower spindle by connecting short section.
Connecting in described top connection upper portion side wall and have upper spindle rupture disk, lower rupture disk urceolus exterior side wall connects lower spindle rupture disk.
Described lower spindle lower end connects a transition pipe nipple, and transition pipe nipple lower end is internal connects cage, and cage bottom is flow throttling ball valves assembly, and and flow throttling ball valves assembly between be provided with a spring, be connected with ball seat pipe nipple bottom described flow throttling ball valves assembly.
There is advantages that owing to taking such scheme, this instrument can be with 4 or less than 4 series connection when using, carry various sizes of throttling oil nozzle, pressurizeed by well head and close or open the oil nozzle of corresponding size, subject range is extensive, and avoid the seal failure situation that oil nozzle occurs, reliable operation because tube inner wall hangs wax frozen block.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention, and wherein a is top half, and b is the latter half.
1-top connection in figure, 2-upper spindle urceolus, 3-upper spindle, 4-connects pawl, 5-spacing ring, 6-transition urceolus, rupture disk urceolus under 7-, 8-lower spindle, 9-ball valve urceolus, 10-transition pipe nipple, 11-operative pin, 12-cage, 13-flow throttling ball valves assembly, 14-ball seat pipe nipple, 15-lower contact, 16-seat spring, 17-upper spindle is fixed lock dog, 18--is cut off, cut off under 19-, 20-upper spindle rupture disk, 21-lower spindle rupture disk.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings:
As shown in Figure 1, a kind of downhole tool utilizing well head pressurizing altered subsurface choke size, including top connection 1, lower contact 15, top connection 1 upper portion side wall connects and has on top connection 1 sidewall corresponding at upper spindle rupture disk 20, and upper spindle rupture disk 20 and have through hole.Described top connection 1 lower end external screw-thread connects upper spindle urceolus 2, upper spindle urceolus 2 lower thread connects transition urceolus 6, transition urceolus 6 lower thread connects lower rupture disk urceolus 7, connect in lower rupture disk urceolus 7 exterior side wall and have lower spindle rupture disk 21, lower rupture disk urceolus 7 sidewall corresponding at lower spindle rupture disk 21 has through hole.Described lower rupture disk urceolus 7 bottom connects ball valve urceolus 9, and ball valve urceolus 9 lower end contacts with lower contact 15.Between above-mentioned top connection 1 and upper spindle urceolus 2, between upper spindle urceolus 2 and transition urceolus 6, between transition urceolus 6 and lower rupture disk urceolus 7, between lower rupture disk urceolus 7 and connecting short section 9, between connecting short section 9 and lower contact 15, it is all provided with sealing ring.
Described top connection 1 lower end internal by cut off and be inlaid with upper spindle on 18 connection upper spindles 3, and top connection 1 sidewall and fix lock dog 17, upper spindle 3 outer wall has and fixes the draw-in groove that lock dog 17 is corresponding with upper spindle.Described upper spindle 3 lower end is threaded connection pawl 4, connects that pawl 4 lower end is threaded lower spindle 8, described connection pawl 4 sidewall is machined with jerk-finger, lower spindle 8 outer wall has the draw-in groove corresponding with the jerk-finger connected on pawl 4.And it is equipped with spacing ring 5 between upper spindle 3 lower end and lower spindle 8 upper end.Cut off 19 under passing through between described transition urceolus 6 lower end and lower spindle 8 to be connected.
Described lower spindle 8 lower end connects transition pipe nipple 10, transition pipe nipple 10 lower end is internal connects cage 12, cage 12 bottom is flow throttling ball valves assembly 13, and and flow throttling ball valves assembly 13 between be provided with a spring 16, be connected with ball seat pipe nipple 14 bottom described flow throttling ball valves assembly 13.Transition pipe nipple 10, cage 12, flow throttling ball valves assembly 13 are outside is provided with operative pin 11, and operative pin 11 is provided with several boss, is stuck on the transition pipe nipple 10 of inside, cage 12, flow throttling ball valves assembly 13 by boss.
When instrument is gone into the well, upper spindle 3 by cut off 18 and be fixed in top connection 1, lower spindle 8 cuts off 19 and is fixed on transition urceolus 6 under passing through, flow throttling ball valves assembly 13 is in an open position, and now instrument is in full-bore state；After pipe string is setting, applied pressure by annulus, pressure release for the first time, open lower spindle rupture disk 21, up the cutting off down of lower spindle 8 cuts off 19, under annular pressure effect, promotes lower spindle 8 to move up, and drives flow throttling ball valves assembly 13 to close；After lower spindle 8 moves to restraining position, the jerk-finger connected on pawl 4 is stuck on the draw-in groove outside lower spindle 8, lower spindle 8 and upper spindle 3 are locked as one (now upper spindle 3 by cut off 18 lockings), so that flow throttling ball valves assembly 13 is closed and locks.
Applied pressure by annulus, pressure release for the second time, open upper spindle rupture disk 20, descending the cutting off of upper spindle 3 cuts off 18, under annular pressure effect, upper spindle 3 moves down, and drives flow throttling ball valves assembly 13 to open, after upper spindle 3 moves to restraining position, upper spindle is fixed lock dog 17 and is stuck on the draw-in groove of upper spindle 3 outer wall, is locked by upper spindle, so that flow throttling ball valves assembly is in open mode and locks.
When after second time applied pressure by annulus, pressure discharge operations, the flow throttling ball valves assembly of instrument by by locked in the state opened, until instrument is again taken apart after down-hole proposes, is assembled.
This instrument is connected within can using 4 or 4 in use, often set instrument is respectively adopted various sizes of flow throttling ball valves assembly (being equivalent to various sizes of throttling oil nozzle), one of them oil nozzle is made to work by well head pressurization, other oil nozzles are in full-bore state, thus realize the subsurface choke size changed within 4 kinds.
Claims (3)
1. the downhole tool utilizing well head pressurizing altered subsurface choke size, including top connection (1), lower contact (15), it is characterized in that: described top connection (1) lower end external screw-thread connects upper spindle urceolus (2), the most threaded transition in upper spindle urceolus (2) bottom urceolus (6), lower rupture disk urceolus (7), lower rupture disk urceolus (7) bottom connects ball valve urceolus (9), and ball valve urceolus (9) lower end contacts with lower contact (15)；
Described top connection (1) lower end internal by cut off (18) and connect upper spindle (3), and be inlaid with upper spindle on top connection (1) sidewall and fix lock dog (17), upper spindle (3) has and fixes the draw-in groove that lock dog (17) is corresponding with upper spindle；Described upper spindle (3) lower end has lower spindle (8), described connection pawl (4) to be provided with jerk-finger by connecting pawl (4) connection, and lower spindle (8) outer wall has the draw-in groove corresponding with the jerk-finger connected on pawl (4)；Cut off (19) under passing through between described transition urceolus (6) lower end and lower spindle (8) to be connected；
Described lower contact (15) top threaded ball seat pipe nipple (14), ball seat pipe nipple (14) top is provided with flow throttling ball valves assembly (13), and flow throttling ball valves assembly (13) top is connected with lower spindle (8) by connecting short section (10).
The downhole tool utilizing well head pressurizing altered subsurface choke size the most according to claim 1, it is characterized in that: connecting in described top connection (1) upper portion side wall has upper spindle rupture disk (20), lower rupture disk urceolus (7) exterior side wall connects lower spindle rupture disk (21).
The downhole tool utilizing well head pressurizing altered subsurface choke size the most according to claim 2, it is characterized in that: described lower spindle (8) lower end connects transition pipe nipple (10), transition pipe nipple (10) lower end is internal connects cage (12), cage (12) bottom is flow throttling ball valves assembly (13), and and flow throttling ball valves assembly (13) between be provided with a spring (16), described flow throttling ball valves assembly (13) bottom is connected with ball seat pipe nipple (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610458149.3A CN106014355A (en) | 2016-06-22 | 2016-06-22 | Downhole tool for changing downhole oil nozzle size through wellhead pressurization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610458149.3A CN106014355A (en) | 2016-06-22 | 2016-06-22 | Downhole tool for changing downhole oil nozzle size through wellhead pressurization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106014355A true CN106014355A (en) | 2016-10-12 |
Family
ID=57085964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610458149.3A Pending CN106014355A (en) | 2016-06-22 | 2016-06-22 | Downhole tool for changing downhole oil nozzle size through wellhead pressurization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106014355A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108166956A (en) * | 2018-01-31 | 2018-06-15 | 中国石油天然气股份有限公司 | A kind of interchangeable nozzles formula flow controller and its application process |
| CN111852427A (en) * | 2020-07-30 | 2020-10-30 | 大庆市天德忠石油科技有限公司 | Fracturing backflow pressure relief device |
| CN112112609A (en) * | 2020-09-14 | 2020-12-22 | 西南石油大学 | Method for realizing size regulation and control of back-flow oil nozzle after gas reservoir pressure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203114245U (en) * | 2013-03-16 | 2013-08-07 | 中国石油集团渤海钻探工程有限公司 | Primary switching valve under shaft |
| CN203175480U (en) * | 2013-01-10 | 2013-09-04 | 中国石油天然气股份有限公司 | Internal-pressure type RDS circulating valve |
| CN203547659U (en) * | 2013-10-23 | 2014-04-16 | 中国石油天然气股份有限公司 | Large drift diameter switch controller |
| CA2918483A1 (en) * | 2013-07-17 | 2015-01-22 | Baker Hughes Incorporated | Labyrinth chamber with helical blade for a submersible well pump and method of use |
| CN204386558U (en) * | 2015-01-08 | 2015-06-10 | 宝鸡市元亨石油设备有限责任公司 | A kind of safety is for liquid valve |
| CN204386557U (en) * | 2015-01-08 | 2015-06-10 | 宝鸡市元亨石油设备有限责任公司 | RD downhole choke valve |
-
2016
- 2016-06-22 CN CN201610458149.3A patent/CN106014355A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203175480U (en) * | 2013-01-10 | 2013-09-04 | 中国石油天然气股份有限公司 | Internal-pressure type RDS circulating valve |
| CN203114245U (en) * | 2013-03-16 | 2013-08-07 | 中国石油集团渤海钻探工程有限公司 | Primary switching valve under shaft |
| CA2918483A1 (en) * | 2013-07-17 | 2015-01-22 | Baker Hughes Incorporated | Labyrinth chamber with helical blade for a submersible well pump and method of use |
| CN203547659U (en) * | 2013-10-23 | 2014-04-16 | 中国石油天然气股份有限公司 | Large drift diameter switch controller |
| CN204386558U (en) * | 2015-01-08 | 2015-06-10 | 宝鸡市元亨石油设备有限责任公司 | A kind of safety is for liquid valve |
| CN204386557U (en) * | 2015-01-08 | 2015-06-10 | 宝鸡市元亨石油设备有限责任公司 | RD downhole choke valve |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108166956A (en) * | 2018-01-31 | 2018-06-15 | 中国石油天然气股份有限公司 | A kind of interchangeable nozzles formula flow controller and its application process |
| CN108166956B (en) * | 2018-01-31 | 2023-09-26 | 中国石油天然气股份有限公司 | Nozzle-replaceable throttle and application method thereof |
| CN111852427A (en) * | 2020-07-30 | 2020-10-30 | 大庆市天德忠石油科技有限公司 | Fracturing backflow pressure relief device |
| CN111852427B (en) * | 2020-07-30 | 2021-05-11 | 大庆市天德忠石油科技有限公司 | Fracturing backflow pressure relief device |
| CN112112609A (en) * | 2020-09-14 | 2020-12-22 | 西南石油大学 | Method for realizing size regulation and control of back-flow oil nozzle after gas reservoir pressure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10563476B2 (en) | Frac plug with integrated flapper valve | |
| US5762139A (en) | Subsurface release cementing plug apparatus and methods | |
| CA2217939C (en) | Well cementing plug assemblies and methods | |
| US7318478B2 (en) | Downhole ball circulation tool | |
| US7434625B2 (en) | Downhole flapper circulation tool | |
| CN110080707A (en) | A kind of starting short circuit having secondary opening function | |
| CN107701147B (en) | Annulus pressure underground control valve | |
| CN101929317B (en) | Undersize-hole oil pipe plugging device | |
| CN201074502Y (en) | Dual-valve plate type subsurface safety valve | |
| US7743787B2 (en) | Mud saver valve with magnetic latching | |
| CN106014355A (en) | Downhole tool for changing downhole oil nozzle size through wellhead pressurization | |
| CN107100606A (en) | A kind of full-bore multistage subsection fracturing sliding bush | |
| CN108915660A (en) | A kind of fracturing process of the coiled tubing with interior blowout prevention function | |
| CN102797427A (en) | Rock core ejection method | |
| CN103711455B (en) | Deepwater wells can be fixed ball and produce sliding sleeve | |
| US2659440A (en) | Casing repair tool | |
| US3382921A (en) | Method and apparatus for installing an underwater well | |
| CN201843567U (en) | Tubing plug capable of passing small hole | |
| CN102628348A (en) | Tubular tubing float valve | |
| CN210714577U (en) | Metal packing structure | |
| CN102296939B (en) | Automatic pressure-balancing expansion-catch integrated expandable tube tool and use method thereof | |
| CN209115092U (en) | A kind of coiled tubing band underseal drag fracturing process pipe string with interior blowout prevention function | |
| CN2784580Y (en) | Hydraulic locking packer | |
| CN202596665U (en) | Drum type oil pipe float valve | |
| CN101881142B (en) | Self-sealing setting ball seat |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161012 |