CN104047541A - Novel automatic blowout prevention turbodrill stator - Google Patents
Novel automatic blowout prevention turbodrill stator Download PDFInfo
- Publication number
- CN104047541A CN104047541A CN201410274197.8A CN201410274197A CN104047541A CN 104047541 A CN104047541 A CN 104047541A CN 201410274197 A CN201410274197 A CN 201410274197A CN 104047541 A CN104047541 A CN 104047541A
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- China
- Prior art keywords
- blade
- vanes
- bearing
- stator
- turbodrill
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Abstract
The invention relates to a novel automatic blowout prevention turbodrill stator applied to an oil-gas well, and belongs to a petroleum and gas well drilling underground device. The novel automatic blowout prevention turbodrill stator is mainly composed of a support, an end cover, vanes, balls, an annular rack and a connecting bolt. The support is of an annular structure, a roll way is formed inside the support, a plurality of lower semicircular supporting holes and supporting grooves are evenly distributed in the peripheral direction of the support, and a plurality of upper semicircular supporting holes are evenly distributed in the peripheral direction of the end cover and are matched with the lower semicircular supporting holes in the peripheral direction of the support to fix the multiple vanes. Limiting grooves are formed in an inner ring of the end cover, and the limiting grooves are of a semicircular structure and are matched with limiting blocks at one ends of the vanes to control the rotation range of the vanes. The upper ends of the vanes are of a quintic polynomial vane form, and the middle parts of the vanes are gears and are meshed with the annular rack. When a blowout accident happens, the vanes are closed in a linked mode. In the well killing process, the vanes can be opened automatically as long as the pressure on the upper portion of the last-stage vane is larger than the pressure on the lower portion, and the work efficiency of the well killing process can be improved.
Description
Technical field
The present invention relates to the new type auto blowout prevention turbodrill of the one stator for Oil/gas Well, belong to oil and gas well drilling downhole hardware.
Background technology
In oil-gas exploration and development process, one of situation that uncontrollable blowout formula is the most dangerous, there is blowout once contain various murder by poisoning compositions as the Oil/gas Well of H2S etc., can cause within the specific limits serious suffocate, the accident such as detonation, cause the catastrophic effects such as fatal crass, injure oil-gas Layer simultaneously, heavy damage petroleum resources, cause environment pollution, jeopardize the masses' the security of the lives and property around, cause heavy economic losses and bad social influence to country, enterprise.
Blowout control equipment mainly comprises wellhead blowout preventor and the large class of drill string blowout preventer two at present, but this two classes jet-preventing tool is separately to use, and automaticity is not high, complicated operation, and gas blowout accident still has generation.Current Domestic is outer mainly concentrates on downhole blow-out preventer for the research of preventer, and this new-type preventer is a kind of down-hole well control instrument of cutting out annular space, outer annular space in drilling rod that integrates.Therefore, design one can automatically be closed inner flow passage in the time there is blowout, can use with downhole blow-out preventer collocation, and the possibility that at utmost reduces blowout generation is very necessary.
Therefore design a kind of stator and can in the time there is blowout, automatically close turbodrill inner flow passage, can use with downhole blow-out preventer collocation, the possibility that at utmost reduces blowout generation is very necessary.
Summary of the invention
The object of the invention is in order to overcome the deficiencies in the prior art, a kind of new type auto blowout prevention turbodrill stator is provided, this stator has automatic blowout-prevention function, is arranged on the final stage of the multistage stator and rotor of turbodrill.In the time that blowout occurs, the blade of this stator can be closed automatically, and turbodrill inner flow passage is closed, and shaft bottom liquid cannot pass through turbodrill inner flow passage, reaches the object of blowout prevention; In the time of kill-job, in the time that top pressure is greater than shaft bottom pressure, final stage automatic blowout-prevention turbodrill stator can be opened automatically, and turbodrill is normally moved.
The technical solution adopted in the present invention is:
A kind of new type auto blowout prevention turbodrill stator of the present invention, it is mainly made up of bearing, end cap, blade, ball, annular rack, connecting bolt.Described bearing is circulus, and inside has raceway; Bearing is circumferentially being evenly distributed with multiple lower half circle supported holes and support slot; On bearing, have some bolts hole.
Described end cap is circulus, and inside has groove; End cap is circumferentially being evenly distributed with multiple upper semi-circle supported holes, and the lower half circle supported hole circumferential with bearing coordinates, fixing multiple blades; On end cap inner ring, have stopper slot, stopper slot is semi-circular structure, and it coordinates with the limited block of blade one end, controls the rotating range of blade; On end cap, have some bolts hole, be bolted with bearing.
Described blade upper end is five order polynomial blade profiles; The mid portion of blade is gear, and engages with annular rack; Blade lower end is limited block, and limited block is sector structure, is made up of the different major arc of radius and minor arc.
Described annular rack engages with the gear of blade; The lower end of annular rack has some ball holes, for ball is installed; Annular rack can carry out circular motion by the raceway in bearing.
The downhole motor system of automatic blowout-prevention turbodrill stator has been installed, in the time of normal work or kill-job, drilling fluid axially flows into turbodrill along drill string, drive how secondary turbodrill rotor to rotate, drive bit, now final stage stator vane is subject to top-down drilling fluid driving, and blade can be opened completely by rack-and-pinion link gear; In the time there is blowout, liquid stream in shaft bottom flows from bottom to top, and final stage stator vane blade back is subject to liquid thrust, making blade pass cross rack-and-pinion link gear closes completely, thereby close inner flow passage, stop shaft bottom liquid to flow to well head ejection, reduce loss and harm that blowout brings.
Beneficial effect of the present invention and advantage are as follows: 1, the present invention can not affect normal drilling well work, and in the time of normal drilling well, exhaust stage blade can stay open state always, ensures carrying out smoothly of normal drilling well; 2, occurring when blowout, exhaust stage blade can be closed automatically, and reaction speed is fast, and blade adopts interlock mode to close, can barrierwell at the bottom of immense pressure from bottom to top; 3,, in the time of kill-job, as long as exhaust stage blade upper pressure is greater than bottom pressure, blade just can be opened automatically, the operating efficiency can improve kill job time.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of new type auto blowout prevention turbodrill stator of the present invention stator while normally working;
Fig. 2 is bearing schematic diagram of the present invention;
Fig. 3 is end cap schematic diagram of the present invention;
Fig. 4 is annular rack schematic diagram of the present invention;
Fig. 5 is blade schematic diagram of the present invention;
Fig. 6 is limited block work schematic diagram of the present invention;
Stator aspect graph when Fig. 7 is normal work of the present invention;
Fig. 8 is the present invention's stator aspect graph in the time there is blowout.
In figure: 1. bearing, 2. end cap, 3. bolt hole, 4. blade, 5. bolt, 6. gear, 7. annular rack, 8. ball, 9. raceway, 10. lower half circle supported hole, 11. support slots, 12. upper semi-circle supported holes, 13. stopper slots, 14. ball holes.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, further illustrate the present invention:
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, a kind of new type auto blowout prevention turbodrill of the present invention, is mainly made up of bearing 1, end cap 2, blade 4, bolt 5, annular rack 7, ball 8.Described bearing 1 is loop configuration, and inside has raceway 9; Bearing 1 is circumferentially being evenly distributed with multiple lower half circle supported holes 10 and support slot 11; On bearing, have some bolts hole 3.
As shown in Figure 3, described end cap 2 is disk-like structure, and inside has groove; End cap 2 is circumferentially being evenly distributed with multiple upper semi-circle supported holes 12, and the lower half circle supported hole 10 circumferential with bearing 1 coordinates, for fixing multiple blades 4; On end cap 2 inner rings, have stopper slot 13, it coordinates with the limited block 5 of blade one end, controls the rotating range of blade; On end cap, have some bolts hole 3, be connected by bolt 5 with bearing 1.
As shown in Figure 4, described annular rack 7 engages with the gear 6 of blade 4; The lower end of annular rack 7 has some ball holes 14, for ball 8 is installed; Annular rack 7 can carry out circular motion by the raceway 9 in bearing 1.
As shown in Figure 5, Figure 6, described blade 4 upper ends are five order polynomial blade profiles, and mid portion is gear 6; Blade 4 lower ends are limited block 5; Limited block 5 is sector structure, is made up of two sections of different circular arcs of radius, and wherein major arc part radius is consistent with stopper slot 13, and minor arc part radius is consistent with support slot 11; Because stopper slot 13 and support slot 11 exist semidiameter, make two semi-circular groove formation step surface that fits together; In the time that blade 4 opens or closes, two sides of limited block 5 contact with two step surfaces respectively, to reach spacing object.
When normal work or kill-job, drilling fluid axially flows into stator by drill string, and now blade 4 is subject to top-down drilling fluid and drives, and blade 4 can forward rotate around the axle center of gear 6, and multiple blades 4 are opened by annular rack 7 entirety that links; When limited block 5 rotates with gear, when the right side step surface that touches that stopper slot 13 and support slot 11 form (as shown in Figure 6), blade 4 is opened completely, the form (as shown in Figure 7) when stator forms normal work; During due to normal drilling well, drilling fluid can constantly flow through blade from top to bottom, form when blade 4 can keep normal work always.
Occurring when blowout, liquid stream in shaft bottom flows into stator from bottom to top, and now blade 4 is subject to liquid driven from bottom to top, and blade 4 can be around the axle center backwards rotation of gear 6, and multiple blades 4 are closed by annular rack 7 entirety that links; When limited block 5 is with gear backwards rotation, touch that stopper slot 13 and support slot 11 form left side step surface time, blade 4 is closed completely, and now last blade and blade top fits with a rear blade blade back, thereby closes inner flow passage completely (as shown in Figure 8); During due to generation blowout, bottom pressure is greater than top pressure, so form when blade 4 can keep closing stops shaft bottom liquid to flow to well head ejection, loss and harm that minimizing blowout brings always.
Claims (2)
1. a new type auto blowout prevention turbodrill stator, mainly formed by bearing, end cap, blade, bolt, annular rack, ball, it is characterized in that: described bearing (1) is circulus, inside has raceway (9), bearing (1), being circumferentially evenly distributed with multiple lower half circle supported holes (10) and support slot (11), has some bolts hole (3) on bearing (1); Described end cap (2) is circulus, inside has groove, circumferentially be evenly distributed with multiple upper semi-circle supported holes (12), the lower half circle supported hole (10) circumferential with bearing (1) coordinates, for fixing multiple blades (4); On end cap (2) inner ring, have stopper slot (13), coordinate with the limited block (5) of blade one end, control the rotating range of blade; Bearing (1) is connected by bolt (5) with end cap (2); Described annular rack (7) engages with the gear (6) of blade (4), its lower end has some ball holes (14), be used for installing ball (8), annular rack (7) can carry out circular motion by the raceway (9) in bearing (1); Described blade (4) upper end is five order polynomial blade profiles, and mid portion is gear (6), and lower end is limited block (5), and limited block (5) is sector structure.
2. the new type auto blowout prevention turbodrill of one according to claim 1 stator, it is characterized in that: normally work or when kill-job, drilling fluid axially flows into stator by drill string, now blade (4) is subject to top-down drilling fluid driving, blade (4) can forward rotate around the axle center of gear (6), and multiple blades (4) are opened by annular rack (7) entirety that links; While there is blowout, blade (4) is subject to liquid driven from bottom to top, blade (4) can be around the axle center backwards rotation of gear (6), and multiple blades (4) are closed by annular rack (7) entirety that links; When limited block (5) is with gear backwards rotation, when the left side step surface that touches that stopper slot (13) and support slot (11) form, blade (4) is closed completely, thereby closes inner flow passage completely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410274197.8A CN104047541B (en) | 2014-06-19 | 2014-06-19 | A kind of new type auto blowout prevention turbodrill stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410274197.8A CN104047541B (en) | 2014-06-19 | 2014-06-19 | A kind of new type auto blowout prevention turbodrill stator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104047541A true CN104047541A (en) | 2014-09-17 |
| CN104047541B CN104047541B (en) | 2015-12-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410274197.8A Expired - Fee Related CN104047541B (en) | 2014-06-19 | 2014-06-19 | A kind of new type auto blowout prevention turbodrill stator |
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| CN (1) | CN104047541B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111561471A (en) * | 2020-05-22 | 2020-08-21 | 中国航发沈阳发动机研究所 | Stator blade rotation angle adjusting mechanism |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1306525A1 (en) * | 2001-10-25 | 2003-05-02 | Snecma Moteurs | Antirotation support system for the nozzle sector of a turbomachine |
| CN202348347U (en) * | 2011-12-24 | 2012-07-25 | 大庆飞马鸿信钻采设备制造有限公司 | Wolfram carbide surface strengthening turbine blade |
| CN203430575U (en) * | 2013-08-29 | 2014-02-12 | 成都科盛石油科技有限公司 | Turbine assembly of turbodrill |
| CN103711631A (en) * | 2014-01-16 | 2014-04-09 | 中国石油大学(北京) | Turbine stator and rotor combination piece for linear projection blade and turbine motor |
| CN203584467U (en) * | 2013-08-29 | 2014-05-07 | 成都科盛石油科技有限公司 | Turbine rotor of turbine drill |
-
2014
- 2014-06-19 CN CN201410274197.8A patent/CN104047541B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1306525A1 (en) * | 2001-10-25 | 2003-05-02 | Snecma Moteurs | Antirotation support system for the nozzle sector of a turbomachine |
| CN202348347U (en) * | 2011-12-24 | 2012-07-25 | 大庆飞马鸿信钻采设备制造有限公司 | Wolfram carbide surface strengthening turbine blade |
| CN203430575U (en) * | 2013-08-29 | 2014-02-12 | 成都科盛石油科技有限公司 | Turbine assembly of turbodrill |
| CN203584467U (en) * | 2013-08-29 | 2014-05-07 | 成都科盛石油科技有限公司 | Turbine rotor of turbine drill |
| CN103711631A (en) * | 2014-01-16 | 2014-04-09 | 中国石油大学(北京) | Turbine stator and rotor combination piece for linear projection blade and turbine motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111561471A (en) * | 2020-05-22 | 2020-08-21 | 中国航发沈阳发动机研究所 | Stator blade rotation angle adjusting mechanism |
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| Publication number | Publication date |
|---|---|
| CN104047541B (en) | 2015-12-09 |
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Granted publication date: 20151209 Termination date: 20200619 |