CN106014356A - Sand-controlled movable type downhole throttle capable of balancing pressure - Google Patents
Sand-controlled movable type downhole throttle capable of balancing pressure Download PDFInfo
- Publication number
- CN106014356A CN106014356A CN201610545345.4A CN201610545345A CN106014356A CN 106014356 A CN106014356 A CN 106014356A CN 201610545345 A CN201610545345 A CN 201610545345A CN 106014356 A CN106014356 A CN 106014356A
- Authority
- CN
- China
- Prior art keywords
- throttle
- choke valve
- proof type
- pedestal
- type movable
- 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
- 239000004576 sand Substances 0.000 title abstract 3
- 239000011148 porous material Substances 0.000 claims abstract description 27
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 230000001960 triggered effect Effects 0.000 claims abstract description 10
- 238000004873 anchoring Methods 0.000 claims abstract description 3
- 230000001105 regulatory effect Effects 0.000 claims description 22
- 230000000694 effects Effects 0.000 claims description 21
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 21
- 230000033001 locomotion Effects 0.000 claims description 12
- 238000012856 packing Methods 0.000 claims description 12
- 210000003437 trachea Anatomy 0.000 claims description 9
- 230000033228 biological regulation Effects 0.000 claims description 6
- 230000003247 decreasing effect Effects 0.000 claims 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 239000003345 natural gas Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000002343 natural gas well Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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
- 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 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanically-Actuated Valves (AREA)
- Lift Valve (AREA)
Abstract
The invention provides a sand-controlled movable type downhole throttle capable of balancing pressure. The sand-controlled movable type downhole throttle comprises a releasing sub deblocking mechanism, an adjusting mechanism, an anchoring mechanism, a sealing mechanism and a gas inlet mechanism, wherein the adjusting mechanism comprises throttle valves and an inner barrel, the quantity of the throttle valves is two or more, the throttle valves are sequentially connected by virtue of an elastic part, multiple fixture blocks are arranged on the inner wall of the inner barrel, and the pore size of each throttle valve is adjusted by virtue of an adjusting part; when the throttle valves move to the fixture blocks, the adjusting part is triggered, and the pore size of the corresponding throttle valve is changed; well gas enters the inner barrel by virtue of the gas inlet mechanism, and the pore sizes of all the throttle valves are the maximum diameter at the moment; gas pressure pushes the throttle valves to move until the throttle valves are connected with the fixture blocks; and the fixture blocks trigger the adjusting parts of the throttle valves, so that the pore size of each throttle valve becomes smaller, and automatic adjustment of throttling parameters is realized.
Description
Technical field
The invention belongs to production gas technology field, oil field, the movable well of pressure sand-proof type can be balanced particularly to one
Lower reducer.
Background technology
Downhole Choking Technology is the main method preventing and treating gas hydrate synthesis in natural gas well production process.Down-hole is saved
The cardinal principle of stream: natural gas realizes natural gas volume by the throttle orifice of reducer and uprushes, pressure reduces,
Natural gas is by expansion absorption Formation heat after throttle orifice so that after throttling, the temperature of air-flow can substantially return to
Temperature before throttling, reduces the probability that gas hydrates are formed in pit shaft, under the conditions of this is to winter low temperature
The continuous and stable production of high-pressure natural gas brings guarantee.Due to the change of the working condition in production process,
Such as strata pressure, surface temperature and join needing of product, need to adjust the Restriction Parameters of down-hole, existing skill
Art is all to be realized by the diameter of adjustment underground throttle device air nozzle, but, there is following lacking in this mode
Fall into: need from well, take out underground throttle device owing to adjusting the diameter of air nozzle, and underground throttle device is setting
With deblocking work progress the most extremely complex and also easily failure, therefore site operation also exists bigger trouble
And affect the normal production of the natural gas well.
Summary of the invention
It is an object of the invention to provide one and can balance pressure sand-proof type movable underground throttle, at regulation knot
Arranging choke valve and card block structure in structure, when choke valve is connected with fixture block, choke valve is automatically adjusted pore chi
Very little, it is achieved automatically to adjust Restriction Parameters.
In order to achieve the above object, the present invention provides following technical scheme:
Pressure sand-proof type movable underground throttle can be balanced, including solution sealing mechanism, governor motion, the anchor of giving up
Determining mechanism, sealing mechanism and admission gear, described governor motion includes choke valve and inner core, described choke valve
Quantity be two or more, described choke valve successively between connected by elastomeric element, described inner core interior
Arranging multiple fixture block on wall, the pore size of described choke valve is adjusted by regulating part, when described choke valve is transported
When moving to fixture block, described regulating part is triggered, and the pore size of described choke valve changes.The present invention is solid
Being scheduled in oil pipe, now, the pressure differential at choke valve two ends is very big, pressure promote the choke valve of bottom to
On move to first fixture block, first fixture block is triggered to the regulating part of choke valve, makes the pore chi of choke valve
Very little change.If now, flow pressure reaches demand, then closed by well head；As still do not reached demand,
Continuing on well head, now second choke valve continues up to move, until it bumps against second fixture block, the
Two fixture blocks are triggered to the regulating part of second choke valve, make the pore size of choke valve change, and the
Pore size after two choke valves changes is less than the pore size of first choke valve.So, until down-hole
Flow pressure reach demand.
One is preferably carried out in mode, and described choke valve includes pedestal, activity template and regulating part, described base
Pore is offered in the centre of seat, arranges projection in the bottom of described pedestal, and described activity template offers chute, described
Projection is stuck in described chute, and described regulating part is fixed on the lower section of described pedestal described activity template, works as institute
State regulating part when being triggered, described activity template by chute along described pedestal slid underneath, by described pore
It is at least partially obscured.
One is preferably carried out in mode, and described regulating part includes depression bar, kelly and rotation dish, described rotation
Being fixed on described pedestal centrally through rotating shaft of dish, described depression bar is fixed on the circumference of described rotation dish side
Bian Shang, described kelly is fixed in the circumferential edge of described rotation dish opposite side, described depression bar and described kelly edge
The centrosymmetry of rotation dish.
One is preferably carried out in mode, according to the order of connection from bottom to up between choke valve, described pedestal
The distance of bump position and described pore gradually successively decrease.
One is preferably carried out in mode, and described regulation valve includes that two activity templates, two described activity templates divide
It is not arranged on the base bottom on described pore both sides.
One is preferably carried out in mode, and described regulation valve also includes that sealing gasket, described sealing gasket are fixed on institute
State between pedestal and described activity template.
One is preferably carried out in mode, and described admission gear includes packing element and trachea, and described trachea is with described
The top of packing element connects, and described governor motion is fixed on inside described packing element.
One is preferably carried out in mode, and described elastomeric element is spring.
One is preferably carried out in mode, and the top of described anchor mechanism is connected with the bottom of described packing element, institute
State connection trachea bottom anchoring device.
The invention has the beneficial effects as follows:
Gas well gas enters inner core by admission gear, and the pore of the most all of choke valve is all in maximum diameter.
Air pressure promotes throttle valve movement, until it is connected with fixture block.The regulating part of choke valve is triggered by fixture block, envoy
The pore size of stream valve diminishes, it is achieved automatically adjust Restriction Parameters.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to enforcement
In example or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, describe below
In accompanying drawing be only some embodiments of the present invention, for those of ordinary skill in the art, do not paying
On the premise of going out creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 be the present invention structural representation；
Fig. 2 is the structural representation of governor motion；
Fig. 3 is the structural representation of choke valve；
Fig. 4 is the structural representation of choke valve；
Fig. 5 is the sectional view of chute and projection.
Detailed description of the invention
Below in conjunction with the accompanying drawing of the present invention, technical scheme is clearly and completely described,
Obviously, described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are obtained under not making creative work premise
The every other embodiment obtained, broadly falls into the scope of protection of the invention.
Shown in Fig. 1, the balanced pressure sand-proof type movable underground throttle of the present embodiment, including losing
Hands solution sealing mechanism 1, governor motion 2, anchor mechanism 3 and admission gear 4.Such as Fig. 2, governor motion 2 wraps
Include choke valve 22 and inner core 21.Inner core 21 is circular hollow cylinder, and its inwall arranges three annular fixture blocks
210.Fixture block 210 is fixed on inwall evenly and at intervals.Pass sequentially through spring between three choke valves 22 to connect.
The diameter of three choke valves 22 is slightly less than the internal diameter of inner core 21, and it can be along the internal slide of inner core 21.
Three choke valves 22 lay respectively at the lower section of three fixture blocks 210.
Such as Fig. 3, choke valve 22 includes pedestal 221, activity template 222 and regulating part 223.Pedestal 221
Centre offer pore, offer two installing holes by antermarginal position.Installing hole is straight along pedestal 221
Footpath is symmetrical.Regulating part 223 is arranged in installing hole.Regulating part 223 includes depression bar 2231, kelly 2232
With rotation dish 2230.Being fixed in installing hole centrally through rotating shaft of rotation dish 223.At rotation dish 223
Side circumferential edge on hinged depression bar 2231, hinged kelly in the circumferential edge of rotation dish 223 opposite side
2232.Depression bar 2231 and kelly 2232 are along the centrosymmetry of rotation dish 223.The top of depression bar 2231
Portion is prominent from the top of installing hole, and the bottom of kelly 2232 is prominent from the bottom of installing hole.Such as Fig. 5, at base
The bottom of seat 221 arranges projection 2211.The cross section of projection 2211 becomes inverse-T-shaped.Activity template 222
Centre offer chute 2220, the shape of cross section of chute 2220 is also inverse-T-shaped.Projection 2211
It is stuck in chute 2220, and can slide along chute 2220.When regulating part 223 in the raw
Time, kelly 2232 is positioned at chute 2220, makes the end of chute 2220 be blocked by kelly 2232, admittedly
Fixed.In order to ensure the sealing of choke valve 22, at the edge adhesive seal sheet 224 of activity template 222, with
Ensure that activity template 222 will not produce gap with pedestal 221 when sliding.According to order from bottom to up, three
Successively decrease successively with the distance of pore in the position of projection 2211 of the pedestal 221 of individual choke valve 22.That is, live
Moving plate 222 blocks the part of its pore and is gradually increased.When regulating part 223 is triggered, joint from bottom to up
The stomatal size of stream valve 22 is gradually reduced.
In use, the present invention is first placed in oil pipe.Now, the pressure differential at choke valve 22 two ends is very
Greatly, pressure promotes the choke valve 22 of bottom to move up to first fixture block 210.Regulating part 223
Depression bar 2231 is expressed to fixture block 210, and rotation dish 223 rotates, and kelly 2232 is along with rotation dish 223
Rotation moves upward.Chute 2220 is not owing to having the stop of kelly 2232, and activity template 222 is along projection
2211 slide, until chute 2220 is by the stop of projection 2211.Now, activity template 222 is by pedestal
The part holes of 221 is blocked, and makes the area of pore reduce, such as Fig. 4.If now, flow pressure reaches demand,
Then well head is closed；As still do not reached demand, continuing on well head, now second choke valve 22 continues past
Upper motion, until it bumps against second fixture block 210, second fixture block 210 is triggered to second choke valve 22
Regulating part 223, make the activity template 222 of choke valve 22 move, the size of pore changes, and
The stomatal size of two choke valves 22 is less than the stomatal size of first choke valve 22.So, until down-hole
Flow pressure reach demand.
Admission gear 4 includes packing element 41 and trachea 42.The bottom of packing element 41 connects anchor mechanism 3.Regulation
It is internal that mechanism 2 is positioned at packing element 41.The top of packing element 41 connects trachea 42, and the bottom of anchor mechanism 3 connects
Trachea 42.The outer wall of anchor mechanism 3 arranges pushing ring 31, air pressure promote first choke valve 22 it
Before, air pressure first promotes anchor mechanism, makes pushing ring 31 move upward.After pushing ring 31 snaps in watt card, make
The position of anchor mechanism 3 is fixed.The bottom of solution of giving up sealing mechanism 1 is connected with the top of governor motion 2.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited to
This, any those familiar with the art, in the technical scope that the invention discloses, can readily occur in
Change or replacement, all should contain within protection scope of the present invention.Therefore, protection scope of the present invention should
Described it is as the criterion with scope of the claims.
Claims (9)
1. can balance pressure sand-proof type movable underground throttle, including give up solution sealing mechanism, governor motion,
Anchor mechanism and admission gear, it is characterised in that: described governor motion includes choke valve and inner core, described joint
Stream valve quantity be two or more, described choke valve successively between connected by elastomeric element, described inner core
Inwall on multiple fixture block is set, the pore size of described choke valve is adjusted by regulating part, when described throttling
When valve moves to fixture block, described regulating part is triggered, and the pore size of described choke valve changes.
The most according to claim 1 balancing pressure sand-proof type movable underground throttle, its feature exists
In, described choke valve includes that pedestal, activity template and regulating part, the centre of described pedestal offer pore, in institute
The bottom stating pedestal arranges projection, and described activity template offers chute, and described projection is stuck in described chute, institute
State regulating part and described activity template is fixed on the lower section of described pedestal, when described regulating part is triggered, described
Described pore along described pedestal slid underneath, is at least partially obscured by activity template by chute.
The most according to claim 2 balancing pressure sand-proof type movable underground throttle, its feature exists
In, described regulating part includes depression bar, kelly and rotation dish, being fixed on centrally through rotating shaft of described rotation dish
On described pedestal, described depression bar is fixed in the circumferential edge of described rotation dish side, and described kelly is fixed on institute
Stating in the circumferential edge of rotation dish opposite side, described depression bar and described kelly are along the centrosymmetry of rotation dish.
4., according to the balanced pressure sand-proof type movable underground throttle described in Claims 2 or 3, it is special
Levy and be, according to the order of connection from bottom to up between choke valve, the bump position of described pedestal and described gas
The distance in hole is gradually successively decreased.
The most according to claim 4 balancing pressure sand-proof type movable underground throttle, its feature exists
In, described regulation valve includes that two activity templates, two described activity templates are separately positioned on described pore both sides
Base bottom.
The most according to claim 5 balancing pressure sand-proof type movable underground throttle, its feature exists
In, described regulation valve also includes that sealing gasket, described sealing gasket are fixed between described pedestal and described activity template.
7., according to the balanced pressure sand-proof type movable underground throttle described in claim 5 or 6, it is special
Levying and be, described admission gear includes that packing element and trachea, described trachea are connected with the top of described packing element, institute
State governor motion to be fixed on inside described packing element.
The most according to claim 7 balancing pressure sand-proof type movable underground throttle, its feature exists
In, described elastomeric element is spring.
The most according to claim 7 balancing pressure sand-proof type movable underground throttle, its feature exists
In, the top of described anchor mechanism is connected with the bottom of described packing element, connects trachea bottom described anchoring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610545345.4A CN106014356B (en) | 2016-07-12 | 2016-07-12 | Pressure sand-proof type movable underground throttle can be balanced |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610545345.4A CN106014356B (en) | 2016-07-12 | 2016-07-12 | Pressure sand-proof type movable underground throttle can be balanced |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106014356A true CN106014356A (en) | 2016-10-12 |
| CN106014356B CN106014356B (en) | 2018-09-25 |
Family
ID=57110011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610545345.4A Active CN106014356B (en) | 2016-07-12 | 2016-07-12 | Pressure sand-proof type movable underground throttle can be balanced |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106014356B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108343405A (en) * | 2018-04-20 | 2018-07-31 | 长江大学 | A kind of underground throttle device with second throttle function |
| CN111119811A (en) * | 2019-12-25 | 2020-05-08 | 中国石油天然气股份有限公司 | Dual-medium dispenser, dispensing string, and method for operating dispensing string |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2044822A (en) * | 1979-03-23 | 1980-10-22 | Camco Inc | Mandrel and flow control valves for well tubing |
| US20090000787A1 (en) * | 2007-06-27 | 2009-01-01 | Schlumberger Technology Corporation | Inflow control device |
| CN103410485A (en) * | 2013-08-14 | 2013-11-27 | 东北石油大学 | Hole-regulating variable-pressure down-hole choke |
| CN104514529A (en) * | 2013-09-29 | 2015-04-15 | 中国石油天然气股份有限公司 | Rotary type downhole throttle with automatic air nozzle adjustment function |
| CN204312036U (en) * | 2014-11-17 | 2015-05-06 | 中国石油天然气股份有限公司 | Differential pressure type air tap of downhole choke |
| CN104895557A (en) * | 2015-03-26 | 2015-09-09 | 南通华兴石油仪器有限公司 | An intelligent well completion simulation system production fluid simulator |
-
2016
- 2016-07-12 CN CN201610545345.4A patent/CN106014356B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2044822A (en) * | 1979-03-23 | 1980-10-22 | Camco Inc | Mandrel and flow control valves for well tubing |
| US20090000787A1 (en) * | 2007-06-27 | 2009-01-01 | Schlumberger Technology Corporation | Inflow control device |
| CN103410485A (en) * | 2013-08-14 | 2013-11-27 | 东北石油大学 | Hole-regulating variable-pressure down-hole choke |
| CN104514529A (en) * | 2013-09-29 | 2015-04-15 | 中国石油天然气股份有限公司 | Rotary type downhole throttle with automatic air nozzle adjustment function |
| CN204312036U (en) * | 2014-11-17 | 2015-05-06 | 中国石油天然气股份有限公司 | Differential pressure type air tap of downhole choke |
| CN104895557A (en) * | 2015-03-26 | 2015-09-09 | 南通华兴石油仪器有限公司 | An intelligent well completion simulation system production fluid simulator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108343405A (en) * | 2018-04-20 | 2018-07-31 | 长江大学 | A kind of underground throttle device with second throttle function |
| CN108343405B (en) * | 2018-04-20 | 2023-12-12 | 长江大学 | Underground throttle with secondary throttle function |
| CN111119811A (en) * | 2019-12-25 | 2020-05-08 | 中国石油天然气股份有限公司 | Dual-medium dispenser, dispensing string, and method for operating dispensing string |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106014356B (en) | 2018-09-25 |
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