CN106761553B - Intelligent downhole throttle valve capable of being turned off in emergency for gas well - Google Patents
Intelligent downhole throttle valve capable of being turned off in emergency for gas well Download PDFInfo
- Publication number
- CN106761553B CN106761553B CN201611170520.2A CN201611170520A CN106761553B CN 106761553 B CN106761553 B CN 106761553B CN 201611170520 A CN201611170520 A CN 201611170520A CN 106761553 B CN106761553 B CN 106761553B
- Authority
- CN
- China
- Prior art keywords
- barrel
- throttling
- temperature
- stator
- rotor
- 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.)
- Active
Links
- 239000004576 sand Substances 0.000 claims abstract description 9
- 238000001914 filtration Methods 0.000 claims abstract description 8
- 239000012530 fluid Substances 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 238000010276 construction Methods 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B34/066—Valve arrangements for boreholes or wells in wells electrically actuated
Landscapes
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Details Of Valves (AREA)
- Lift Valve (AREA)
- Electrically Driven Valve-Operating Means (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention discloses an intelligent downhole throttle valve capable of being shut off in an emergency for a gas well, which comprises a delivery mechanism and a downhole throttle mechanism, and is characterized in that: the underground throttling mechanism comprises a working barrel, the lower end of the working barrel is connected with a lower joint, a protection barrel is connected to the lower end of the working barrel, an inner core barrel is arranged in the protection barrel, an annular space is arranged between the protection barrel and the inner core barrel, a temperature and pressure testing tool and a high-temperature motor are arranged in the inner core barrel, an output shaft of the high-temperature motor is connected with a rotor of a throttling nozzle, an adjusting seat of the throttling nozzle is arranged in the lower joint, a sand filtering net is connected to the lower end of the lower joint, and a fluid channel in the sand filtering net corresponds to an adjusting hole in a stator of the throttling nozzle. According to the invention, the back pressure of the choke is detected, the controller of the temperature and pressure testing tool controls the motor to drive the rotating shaft to rotate, and the opening of the throttle choke is adjusted, so that the back pressure of the throttle choke is stabilized in a set range, the production pressure of a wellhead is stabilized, and the construction efficiency is further improved.
Description
Technical Field
The invention relates to an intelligent downhole throttling valve capable of being shut off in an emergency for a gas well.
Background
The underground throttleer is an effective means for stabilizing production of gas wells, preventing and controlling hydrate production and reducing ground construction investment, and is widely applied to various atmospheric fields. The common downhole choke has the following problems 1 in application that the oil pressure of a wellhead is continuously reduced along with the formation pressure, when the pressure delivery requirement is not met, the nozzle diameter cannot be automatically adjusted, and a pipe column needs to be pulled out or replaced by throwing and fishing operation. 2. When the situations of wellhead leakage, sudden pressure drop and the like occur, the underground throttling process cannot realize emergency shutdown, and the safety production of a gas well is guaranteed. Therefore, it is necessary to design a choke with adjustable flow nozzle and emergency shut-off function.
Disclosure of Invention
The invention aims to solve the technical problem of providing an intelligent downhole throttling valve capable of automatically adjusting the aperture of a throttling nozzle according to production requirements and capable of shutting down a gas well emergently, aiming at the defects in the prior art.
The technical scheme adopted by the invention is as follows: the utility model provides a gas well can promptly be shut off intelligent choke valve in pit which characterized in that: including delivering mechanism, throttle mechanism in the pit, its characterized in that: the underground throttling mechanism comprises a working barrel, the lower end of the working barrel is connected with a lower joint, the lower end of the working barrel is connected with a protection barrel, an inner core barrel is arranged in the protection barrel, an annular space is arranged between the protection barrel and the inner core barrel, a temperature pressure testing tool and a high-temperature motor are arranged in the inner core barrel, a controller of the temperature pressure testing tool is used for controlling the high-temperature motor, an output shaft of the high-temperature motor is connected with a rotor of a throttling nozzle, a regulating seat of the throttling nozzle is arranged in the lower joint, the lower end of the lower joint is connected with a sand filtering net, and a fluid channel in the sand filtering net corresponds to a regulating hole in a stator of the throttling nozzle.
According to the technical scheme, the throttling nozzle comprises a rotor, a stator, an adjusting seat and an adjusting spring, wherein the rotor, the stator, the adjusting seat and the adjusting spring are connected with an output shaft of the motor, the rotor, the stator and the spring are sequentially arranged on the adjusting seat, the stator is pressed in the adjusting seat through the adjusting spring and corresponds to the rotor, a plurality of first liquid inlet holes which are axially communicated are formed in the stator, a plurality of second liquid inlet holes which are axially communicated are formed in the rotor, the first liquid inlet holes correspond to the second liquid inlet holes, and the first liquid inlet holes are communicated or staggered with the second liquid inlet holes under the driving of the output shaft of the motor.
According to the technical scheme, the upper end of the inner core barrel is connected with the inner joint, the inner joint is internally provided with a through hole communicated with the annular space, and the through hole is communicated with the inner channel of the working barrel.
According to the technical scheme, the delivery mechanism comprises a delivery rod, a fishing head and a support sleeve which are sequentially connected, the support sleeve is connected with the delivery rod through a delivery pin, a clamping mechanism is arranged outside the support sleeve and used for being matched with a clamping groove formed in the working barrel, and a combined sealing mechanism is arranged at the lower end of the support sleeve and used for being hermetically configured with the working barrel.
According to the technical scheme, the pressure sensor of the pressure testing device is communicated with the annular space.
The working principle of the invention is as follows: the beneficial effects obtained by the invention are as follows:
1. according to the invention, the back pressure of the choke is detected, the controller of the temperature and pressure testing tool controls the motor to drive the rotating shaft to rotate, and the opening of the throttle choke is adjusted, so that the back pressure of the throttle choke is stabilized in a set range, the production pressure of a wellhead is stabilized, and the construction efficiency is further improved.
2. The underground throttle nozzle can be automatically adjusted according to the pressure fluctuation of the bottom of the well, the throwing and fishing frequency is reduced, and the breaking and falling risks of the throwing and fishing steel wires are also reduced.
3. When wellhead leakage occurs, pressure suddenly drops, and the emergency shutoff valve is closed to cause wellhead pressure suddenly increases and other accidents, automatic emergency shutoff can be realized. When the pressure returns to normal, the throttle nozzle is automatically opened again, and normal production is resumed.
4. If the production demand changes, can send wireless signal through the well head, pressure setting value after the long-range regulation and control throttle to reach the accent and produce the purpose.
5. The intelligent underground throttle control valve stores temperature and pressure data once every 2 hours, records the working state of the throttle, and can perform data inversion after the throttle is taken out, thereby being beneficial to production dynamic analysis.
6. After the intelligent underground throttling control valve is taken out, the full drift diameter of the pipe column does not influence the subsequent construction operation.
Drawings
FIG. 1 is a block diagram of the present invention.
Fig. 2 is a schematic structural view of a mover in the throttle valve of the present invention.
Fig. 3 isbase:Sub>A sectional viewbase:Sub>A-base:Sub>A of fig. 2.
FIG. 4 is a schematic view of the stator structure of the throttle valve of the present invention.
Fig. 5 is a view from direction B of fig. 4.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in the figure, the embodiment provides an intelligent downhole throttle valve capable of being shut off in emergency for a gas well, and the intelligent downhole throttle valve comprises a delivery mechanism and a downhole throttle mechanism, wherein the delivery mechanism comprises a delivery rod 1, a fishing head 2 and a support sleeve 18 which are sequentially connected, the support sleeve 18 is connected with the delivery rod 1 through a delivery pin 3, a clamping mechanism 4 is arranged outside the support sleeve 18, the clamping mechanism 4 is used for being matched with a clamping groove arranged in a working barrel 6, and a combined sealing mechanism 5 is arranged at the lower end of the support sleeve 18 and used for being in sealing configuration with the working barrel 6. The underground throttling mechanism comprises a working barrel 6 and a protection barrel 17, the lower end of the working barrel 6 is connected with the protection barrel 17, the lower end of the protection barrel 17 is connected with a lower joint 14, an inner core barrel 16 is arranged in the protection barrel 17, and an annular space 15 is arranged between the protection barrel 17 and the inner core barrel 16. An inner joint 25 is connected to the upper end of the protective cylinder 17, a through hole 26 communicating with the annular space is provided in the inner joint 25, and the through hole 26 communicates with the inner passage of the cylinder. The temperature and pressure testing tool and the high-temperature motor 10 are arranged in the inner core barrel 16, the temperature and pressure testing tool comprises a battery part 7, a controller 8, a pressure sensor 9 and a thermometer, the controller 8 is used for controlling the high-temperature motor 10, the pressure sensor is communicated with the annular space and used for testing the pressure of the annular space after the throttling nozzle is adjusted, an output shaft of the high-temperature motor 10 is connected with a rotor of the throttling nozzle 12, an adjusting seat of the throttling nozzle 12 is arranged in a lower connector 14, the lower end of the lower connector 14 is connected with a sand filtering net 13, and a fluid channel in the sand filtering net 13 corresponds to an adjusting hole in a stator of the throttling nozzle.
In this embodiment, the throttling nozzle includes a rotor 19, a stator 20, an adjusting seat 22, and an adjusting spring 21, the rotor 19, the stator 20, and the spring 21 are sequentially installed on the adjusting seat 22, the rotor 19 is connected with an output shaft of the high temperature motor 10, the stator 20 is press-fitted in the adjusting seat 22 through the spring 21 and corresponds to the rotor 19, a plurality of axially through first liquid inlet holes 23 are formed in the stator, a plurality of axially through second liquid inlet holes 24 are formed in the rotor, the first liquid inlet holes 23 correspond to the second liquid inlet holes 24, and the first liquid inlet holes 23 are communicated with or staggered with the second liquid inlet holes 24 under the driving of the motor output shaft 10.
When the device works, the working barrel 6 is connected with a production pipe column, after the pipe column is lowered to a designed position, the pipe column is connected with the delivery rod 1 of the intelligent underground throttler through a cable or a steel wire and is lowered to the position of the working barrel 6 at the speed of 5-10 m/min, then the delivery mechanism is lifted to the position 5m above the working barrel, the tool string is lowered again, and the delivery shear pin 3 is sheared and thrown by rapid downward shocking, so that the valve seat of the throttling control is placed. Slowly lifting the steel wire, observing a weight indicator, when the hanging weight of the steel wire drops, indicating that the delivered shear pin 3 is sheared and the releasing is successful, the combined sealing mechanism 5 seals the working barrel 6, and the clamping mechanism 4 is clamped in the working barrel 6.
During production, gas enters through a sand filter net 13 at the bottom of the intelligent underground throttling control valve, throttling and pressure reduction are carried out at a throttling nozzle 12, and the throttled gas enters an annular channel 15, passes through the annular channel and then enters a main flow channel through a perforation 26. At the moment, the gas passes through the whole intelligent underground throttling control valve, and throttling and pressure reduction production is realized.
When the intelligent underground throttle control valve needs to be taken out, a special fishing tool is put in through a cable or a steel wire, the fishing tool is lifted up after fishing the fishing head 2 and then is carried to the fishing head 2 and the supporting sleeve 18 to go upward, the clamping mechanism 4 loses the support and is in a clamping release state, and after the friction force between the combined sealing mechanism 5 and the working barrel is overcome, the intelligent underground throttle control valve can be taken out by continuously lifting.
Claims (3)
1. An intelligent downhole throttling valve capable of being shut off in emergency for a gas well is characterized in that: including delivering mechanism, throttle mechanism in the pit, its characterized in that: the underground throttling mechanism comprises a working barrel and a protection barrel, the lower end of the protection barrel is connected with a lower connector, the lower end of the working barrel is connected with the protection barrel, an inner core barrel is arranged in the protection barrel, an annular space is arranged between the protection barrel and the inner core barrel, a temperature and pressure testing tool and a high-temperature motor are arranged in the inner core barrel, a controller of the temperature and pressure testing tool is used for controlling the high-temperature motor, an output shaft of the high-temperature motor is connected with a rotor of a throttling nozzle, an adjusting seat of the throttling nozzle is arranged in the lower connector, a sand filtering net is connected to the lower end of the lower connector, a fluid channel in the sand filtering net corresponds to an adjusting hole in the stator of the throttling nozzle, the throttling nozzle comprises a rotor, a stator, an adjusting seat and an adjusting spring, the rotor, the stator and the adjusting spring are sequentially arranged on the adjusting seat, the stator is pressed in the adjusting seat through the adjusting spring and corresponds to the rotor, a plurality of first liquid inlet holes which are axially communicated are arranged on the stator, a plurality of second liquid inlet holes are arranged on the rotor, the first liquid inlet holes are corresponding to the second liquid inlet holes, and the second liquid inlet holes are staggered under the driving of the motor.
2. The intelligent downhole choke valve for emergency shutdown of a gas well as claimed in claim 1, wherein: the upper end of the inner core cylinder is connected with an inner joint, a through hole communicated with the annular space is formed in the inner joint, and the through hole is communicated with the inner channel of the working cylinder.
3. An intelligent downhole choke valve for a gas well that can be emergency shut-off as defined in claim 1, wherein: the delivery mechanism comprises a delivery rod, a fishing head and a support sleeve which are sequentially connected, the support sleeve is connected with the delivery rod through a delivery pin, a clamping mechanism is arranged outside the support sleeve and used for being matched with a clamping groove arranged in the working barrel, and a combined sealing mechanism is arranged at the lower end of the support sleeve and used for being hermetically configured with the working barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611170520.2A CN106761553B (en) | 2016-12-16 | 2016-12-16 | Intelligent downhole throttle valve capable of being turned off in emergency for gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611170520.2A CN106761553B (en) | 2016-12-16 | 2016-12-16 | Intelligent downhole throttle valve capable of being turned off in emergency for gas well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106761553A CN106761553A (en) | 2017-05-31 |
| CN106761553B true CN106761553B (en) | 2023-04-07 |
Family
ID=58891972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611170520.2A Active CN106761553B (en) | 2016-12-16 | 2016-12-16 | Intelligent downhole throttle valve capable of being turned off in emergency for gas well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106761553B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110344791A (en) * | 2018-04-07 | 2019-10-18 | 肖蔚然 | A kind of intelligent control downhole choke device |
| CN111425164B (en) * | 2020-03-30 | 2021-04-06 | 中国石油大学(华东) | Fully-electrically-driven underground safety valve and digital twin control method and system thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3412806A (en) * | 1965-07-14 | 1968-11-26 | Otis Eng Co | Multiple safety valve installation for wells |
| CN200982180Y (en) * | 2006-11-03 | 2007-11-28 | 吐哈石油勘探开发指挥部钻采工艺研究院 | Throttling control device for down-hole oil pipe |
| CN201517396U (en) * | 2009-10-13 | 2010-06-30 | 中国石油天然气股份有限公司 | Preset downhole choke and delivery tool |
| CN202510087U (en) * | 2012-04-05 | 2012-10-31 | 西南石油大学 | Retrievable subsurface safety valve |
| CN204920925U (en) * | 2015-08-26 | 2015-12-30 | 深圳市佳运通电子有限公司 | Accurate eccentric water filling tool of oil -field flooding well |
| CN206338053U (en) * | 2016-12-16 | 2017-07-18 | 中国石油化工股份有限公司江汉油田分公司石油工程技术研究院 | A kind of gas well can choke valve under the smart well of emergency shutdown |
-
2016
- 2016-12-16 CN CN201611170520.2A patent/CN106761553B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106761553A (en) | 2017-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4009756A (en) | Method and apparatus for flooding of oil-bearing formations by downward inter-zone pumping | |
| US11346336B2 (en) | Safety pressure limiting system and method for positive displacement pumps with optional automatic restart | |
| CN102405328B (en) | Apparatus for and method of drilling a subterranean borehole | |
| US20100300702A1 (en) | Wellbore Shut Off Valve with Hydraulic Actuator System | |
| CA2834253C (en) | Smart hydraulic pumping device for recovery of oil and obtaining of information from the bottom of the reservoir | |
| CN106761553B (en) | Intelligent downhole throttle valve capable of being turned off in emergency for gas well | |
| AU2015213301B2 (en) | Valve system | |
| GB2544831A (en) | Autonomous control valve for well pressure control | |
| US4890674A (en) | Flapper valve protection | |
| CN204899812U (en) | Annular space ftercompction pressure release automatic control equipment | |
| CN106988709A (en) | A kind of underground real-time, tunable throttling technique | |
| CN206338053U (en) | A kind of gas well can choke valve under the smart well of emergency shutdown | |
| CN101876240A (en) | Fully automatic oil extraction equipment | |
| EP3963175B1 (en) | Operating a subsurface safety valve using a downhole pump | |
| CN206346721U (en) | Wellhead over-pressure protector | |
| CN211648057U (en) | Tool for windowing sleeve of continuous oil pipe | |
| CN206737885U (en) | A kind of presetting system adjustable choke | |
| CN107701141A (en) | A kind of pressure adjustable type plunger lift wellhead assembly and its monitoring method | |
| CN204225842U (en) | Valve discharging gas under certain pressure | |
| CA3215550A1 (en) | Gas lift system and method | |
| CN201620839U (en) | Pressurized operation production string for natural gas well | |
| CN204152474U (en) | A kind of for underground work automatic monitoring oil blowout hookup | |
| CN103195399B (en) | Single pressure automatically controlled commingled column of bivalve and regulate and control method | |
| CN108343404B (en) | Intelligent throttling device for natural gas well | |
| CN115162999A (en) | Large-diameter continuous gas production pipe column putting construction method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20191230 Address after: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Applicant after: CHINA PETROLEUM & CHEMICAL Corp. Applicant after: PETROLEUM ENGINEERING TECHNOLOGY Research Institute OF HANJIANG OIL FIELD BRANCH SINOPEC Address before: 430035 Hubei city of Wuhan province Gutian two Road No. 37 HSBC Nanniwan Avenue headquarters block fifth B Applicant before: PETROLEUM ENGINEERING TECHNOLOGY Research Institute OF HANJIANG OIL FIELD BRANCH SINOPEC |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |