CN106837266A - Gas well drainage underground gas production instrument based on jet with vortex one - Google Patents
Gas well drainage underground gas production instrument based on jet with vortex one Download PDFInfo
- Publication number
- CN106837266A CN106837266A CN201611218385.4A CN201611218385A CN106837266A CN 106837266 A CN106837266 A CN 106837266A CN 201611218385 A CN201611218385 A CN 201611218385A CN 106837266 A CN106837266 A CN 106837266A
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- Prior art keywords
- vortex
- jet
- generator
- gas well
- mouth
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 40
- 239000012530 fluid Substances 0.000 claims description 22
- 239000000203 mixture Substances 0.000 claims description 6
- 239000004576 sand Substances 0.000 claims description 5
- 230000005713 exacerbation Effects 0.000 claims description 2
- 239000000565 sealant Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 20
- 241000521257 Hydrops Species 0.000 abstract description 10
- 206010030113 Oedema Diseases 0.000 abstract description 10
- 239000007789 gas Substances 0.000 description 49
- 239000012071 phase Substances 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000009545 invasion Effects 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 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
- 239000003345 natural gas Substances 0.000 description 1
- 239000002343 natural gas well Substances 0.000 description 1
- 230000032696 parturition Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 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
- E21B43/121—Lifting well fluids
-
- 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
- E21B43/34—Arrangements for separating materials produced by the well
- E21B43/38—Arrangements for separating materials produced by the well in the well
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)
- Cyclones (AREA)
Abstract
The invention discloses a kind of gas well drainage underground gas production instrument based on jet with vortex one, including fluidic generator, vortex generator and salvaging component；Described fluidic generator is connected with vortex generator, salvages component and is connected with vortex generator；Described vortex generator is internally formed vortex drain chamber, and vortex draining cavity wall is provided with helical blade；The jet mouth of fluidic generator is connected with vortex drain chamber.The interior vortex design for using can solve the problem that liquid problem is taken in jet low flow velocity region, effectively prevent fluidic generator top hydrops from causing jet mouth to export the problem that back pressure is raised, influences the normal production of gas well.
Description
【Technical field】
The present invention relates to a kind of gas well drainage underground gas production instrument based on jet with vortex one, it is adaptable to which natural gas is opened
The weak spray water-producing gas well water pumping gas production of Downhole Choking Technology is taken during adopting.
【Background technology】
Produce water natural gas well Development and Production and be generally divided into three phases.Initial stage adjusts the product stage, and stratum water enchroachment (invasion) is slight, gas well energy
Amount is higher, and aquifer yield is less, and production is steady, and influence of the product water to gas well liquid loading be not obvious, can take liquid by self-ability and produce；
Steady production stage, general gas well yield is more than critical liquid carrying flow rate, rational with giving birth to, can autonomous stabilisation take liquid production,
Hydrops is difficult near wellbore zone and pit shaft；The water stage is produced in weak spray, and with the extension of Development and Production time, stratum energy constantly drops
Low, edge-bottom water water enchroachment (invasion) aggravation, gas well aquifer yield increase cannot completely arrange hydrops near wellbore zone and pit shaft by self-energy
Remove, the accumulation of hydrops causes that gas well mouth pressure, gas production constantly decline, until cannot continuously be produced by " drowned ".Therefore, day
It is to extend one of gas well production life of well, the important measures for improving recovery ratio that the water pumping gas production of water stage is produced in the right weak spray of gas well.
Underground vortex instrument be reduce gas well critical liquid carrying flow rate, lifting gas well fluid-carrying capability drainage gas recovery it
One, its principle be random gas-liquid two-phase turbulent fluid axially into vortex instrument after, the larger free water of density receive inertia
Centrifugal action is thrown to get rid of to tube wall sentences form of liquid film rising, and gas axially rises in gas column form along tubing string, and fluid becomes
Regular two-phase laminar flow, reduces wellbore pressure loss loss, while the capillary effect on tube wall is lifted for wellbore fluid and also has one
Determine booster action.
Sulige gas field, Ordos Basin uses downhole choke production technology, and surface line operating pressure is greatly reduced,
Can effectively prevent gas hydrate synthesis, stratum excited and inter-well interference, simplify ground flow, reduce development cost.But after exploitation
Phase, with the decline of gas well yield, the easy hydrops in air tap of underground throttle top jet low flow velocity region will have a strong impact on gas well and take
Liquid energy power, production capacity are played.
【The content of the invention】
To solve the problems, such as prior art, the present invention provides a kind of safety coefficient high, collection downhole choke and draining and adopts
In the downhole tool of one, the instrument disclosure satisfy that the production of gas well downhole choke and middle and later periods water pumping gas production demand to gas performance.
The present invention seeks to what is be achieved through the following technical solutions：
Based on jet with vortex one gas well drainage underground gas production instrument, including fluidic generator, vortex generator and
Salvage component；Described fluidic generator is connected with vortex generator, salvages component and is connected with vortex generator；Described vortex
Generator is internally formed vortex drain chamber, and vortex draining cavity wall is provided with helical blade；The jet mouth of fluidic generator and whirlpool
Stream drain chamber connection.
Described vortex drain chamber bottom is recessed arc structure, and arc structure bottom is additionally provided with fluid collection chamber；Hydrops
Chamber is connected with the outlet of jet mouth.
Described fluid collection chamber with diameter greater than jet mouth outlet diameter, less than vortex drain chamber diameter.
Along vortex draining cavity wall equidistantly distributed, the helical angle of helical blade is 30 °~45 ° to helical blade.
Described fluidic generator includes jet guide shell, link gear, slips and lower slipses seat, and link gear is arranged on
Jet guide shell periphery, is disposed with fastener, O-ring seal, lower slipses seat, slips and adds from down to up on link gear
Weight ring；Jet guide shell bottom is connected with sand cap；Jet guide shell top connects with jet mouth.
Described jet mouth is connected by bell-mouth structure of air and cylindrical section structure composition, bell-mouth structure of air with jet guide shell,
Cylinder segment structure is connected with vortex drain chamber.
Described vortex generator also includes housing, and jet mouth stretches into enclosure interior and is connected with vortex drain chamber.
Described salvaging component is made up of fishing head and fishing neck, and fishing head is connected with described housing, salvages cephalic par
It is provided with fishing neck.
Relative to prior art, the present invention has advantages below：
The present invention includes fluidic generator, vortex generator, matches with vortex instrument discharge opeing performance, disclosure satisfy that difference
Production capacity gas well takes liquid Production requirement.The instrument combines vortex drainage gas production technology and throttling production technology, and conventional technology is not
The instrument jet can be provided simultaneously with and the water pumping gas production effect in one is vortexed, gas well scope is applicable wider；Common technology function
Single, measure effect is relatively poor.By helical blade so that divided by the gas-liquid mixed phase of fluidic generator jet mouth
From, the gas-liquid mixed phase for mainly spraying is separated gas-liquid mixed phase fluid by helical blade, wherein, gas phase is along vortex draining
Chamber central passage flowing, liquid phase is along pipe wall screw blades flows.The interior vortex design for using can solve the problem that jet low flow velocity region
Liquid problem is taken, back pressure is raised, influence gas well is normally produced effectively to prevent fluidic generator top hydrops from causing jet mouth to export
Problem.The present invention is realized and is combined jet with water drainage-gas recovery technology with vortex integrated design, downhole choke production, is reached
The purpose of Soviet Union's easy hydrops in Sulige gas field downhole choke gas well mid-later development phase flow controller top is solved the problems, such as, while can effectively reduce
Pulling work operations amount and pit shaft operational management risk.Therefore, jet be vortexed the gas well drainage underground gas production instrument in one
With certain application prospect and promotional value.
Further, after the design of fluid collection chamber contributes to the cavity for first carrying out large area along the liquid that helical blade is flowed down to buffer
Lower row is carried out, prevents from blocking jet mouth.
Further, the helical angle of helical blade is 30 °~45 °, and separative efficiency highest can reach almost complete draining
Effect.
Further, by bell-mouth structure of air and cylindrical section structure composition, underground gas-liquid miscible fluids enters incident flow hair to jet mouth
The laggard incident flow guide shell of raw device, vortex generator is entered to jet mouth after being depressured throttling.Fluid pressure can effectively be reduced
With raising rate of flow of fluid.
【Brief description of the drawings】
The structural representation (view in full section) of Fig. 1 inventive articles；
Wherein, 1, fishing head；2nd, it is vortexed drain chamber；3rd, shell；4th, jet mouth；5th, ring is aggravated；6th, slips；7th, lower slipses
Seat；8th, O-ring seal；9th, fastener；10th, jet guide shell；11st, link gear；12nd, sand cap；13rd, fluid collection chamber；14th, spiral
Blade.
【Specific embodiment】
Below in conjunction with the accompanying drawings, specific embodiment of the invention is described in detail, but the invention is not restricted to the implementation
Example.In order that the public has to the present invention thoroughly understanding, concrete details is described in detail in present invention below preferably applies example.
As shown in Figure 1, a kind of gas well drainage underground gas production instrument based on jet with vortex one of the present invention.The instrument
Be made up of fluidic generator and vortex generator two parts, mainly have fishing head 1, vortex drain chamber 2, shell 3, jet mouth 4, plus
Weight ring 5, slips 6, lower slipses seat 7, O-ring seal 8, fastener 9, jet guide shell 10, link gear 11 and sand cap 12.
Fluidic generator includes jet guide shell 10, link gear 11, slips 6 and lower slipses seat 7, and link gear 11 is set
Be disposed with from down to up in the periphery of jet guide shell 10, on link gear 11 fastener 9, O-ring seal 8, lower slipses seat 7,
Slips 6 and exacerbation ring 5；The bottom of jet guide shell 10 is connected with sand cap 12.The top of jet guide shell 10 is provided with jet mouth
4。
Vortex generator includes housing 3, and housing 3 is internally formed vortex drain chamber 2, and cavity inner wall sets equidistantly distributed
Helical blade 14.Jet mouth 4 is connected with vortex drain chamber 2.Vortex drain chamber 2 bottom is recessed arc structure, arc structure
Bottom is additionally provided with fluid collection chamber 13.Fluid collection chamber 13 with diameter greater than the outlet diameter of jet mouth 4, less than the vortex diameter of drain chamber 2.
Fishing head 1 is arranged on vortex generator end.
Specific modular construction and operation principle are as follows：
1st, component composition is salvaged：It is made up of fishing head 1 and fishing neck, is connected with drifting tool string when being mainly used in operation,
And instrument surprisingly falls the salvaging after well.
2nd, fluidic generator composition：By jet mouth 4, jet guide shell 10, cartridge, it is located in device slips 6 and constitutes.Underground
Gas-liquid mixed phase fluid enters the laggard incident flow guide shell 10 of fluidic generator, and vortex is entered after being depressured throttling to jet mouth 4
Generator.Fluid pressure can effectively be reduced and rate of flow of fluid is improved.
3rd, vortex generator composition：It is made up of helical blade 14 and housing 3, the inwall of vortex drain chamber 2 distribution of housing 3 etc.
The helical blade 14 of spacing, is mainly used in being separated gas-liquid mixed phase fluid, and gas phase flows along central passage, and liquid phase is along tube wall
Flowing.
The features of the present invention is as follows：
1st, integrated design is carried out by by jet and vortex generator, reduces underground and deliver work operations amount and pit shaft
Operational management risk.
2nd, injector is based on professional fluid emulation simulation softward and optimizes design, with vortex instrument discharge opeing performance phase
Match somebody with somebody, disclosure satisfy that different production capacity gas wells take liquid Production requirement.
3rd, compared to conventional outer vortex instrument, the interior vortex design of use can solve the problem that liquid problem is taken in jet low flow velocity region,
Effectively prevent fluidic generator top hydrops from causing jet mouth to export the problem that back pressure is raised, influences the normal production of gas well.
The present invention is realized and is combined jet with water drainage-gas recovery technology with vortex integrated design, downhole choke production,
The purpose for solving the problems, such as Soviet Union's easy hydrops in Sulige gas field downhole choke gas well mid-later development phase flow controller top is reached, while can be effective
Reduce pulling work operations amount and pit shaft operational management risk.Therefore, jet be vortexed the gas well drainage underground gas production in one
Instrument has certain application prospect and promotional value.
Claims (8)
1. based on jet and the gas well drainage underground gas production instrument for being vortexed one, it is characterised in that including fluidic generator, vortex
Generator and salvaging component；Described fluidic generator is connected with vortex generator, salvages component and is connected with vortex generator；Institute
The vortex generator stated is internally formed vortex drain chamber (2), and vortex drain chamber (2) inwall is provided with helical blade (14)；Jet
The jet mouth (4) of generator is connected with vortex drain chamber (2).
2. it is according to claim 1 based on jet with vortex one gas well drainage underground gas production instrument, it is characterised in that
Described vortex drain chamber (2) bottom is recessed arc structure, and arc structure bottom is additionally provided with fluid collection chamber (13)；Fluid collection chamber
(13) it is connected with jet mouth (4) outlet.
3. it is according to claim 2 based on jet with vortex one gas well drainage underground gas production instrument, it is characterised in that
Described fluid collection chamber (13) with diameter greater than jet mouth (4) outlet diameter, less than vortex drain chamber (2) diameter.
4. it is according to claim 1 based on jet with vortex one gas well drainage underground gas production instrument, it is characterised in that
Along vortex drain chamber (2) inwall equidistantly distributed, the helical angle of helical blade (14) is 30 °~45 ° to helical blade (14).
5. it is according to claim 1 based on jet with vortex one gas well drainage underground gas production instrument, it is characterised in that
Described fluidic generator includes jet guide shell (10), link gear (11), slips (6) and lower slipses seat (7), link gear
(11) jet guide shell (10) periphery is arranged on, fastener (9), fluid sealant is disposed with link gear (11) from down to up
Circle (8), lower slipses seat (7), slips (6) and exacerbation ring (5)；Jet guide shell (10) bottom is connected with sand cap (12)；Penetrate
Conductance flow cartridge (10) top connects with jet mouth (4).
6. it is according to claim 5 based on jet with vortex one gas well drainage underground gas production instrument, it is characterised in that
Described jet mouth (4) is connected by bell-mouth structure of air and cylindrical section structure composition, bell-mouth structure of air with jet guide shell (10), circle
Shell of column structure is connected with vortex drain chamber (2).
7. it is according to claim 1 based on jet with vortex one gas well drainage underground gas production instrument, it is characterised in that
Described vortex generator also includes housing (3), and jet mouth (4) stretches into housing (3) inside and is connected with vortex drain chamber (2).
8. it is according to claim 7 based on jet with vortex one gas well drainage underground gas production instrument, it is characterised in that
Described salvaging component is made up of fishing head (1) and fishing neck, and fishing head (1) is connected with described housing (3), fishing head (1)
End is provided with fishing neck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611218385.4A CN106837266B (en) | 2016-12-26 | 2016-12-26 | Gas well drainage underground gas production tool based on jet stream and vortex one |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611218385.4A CN106837266B (en) | 2016-12-26 | 2016-12-26 | Gas well drainage underground gas production tool based on jet stream and vortex one |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106837266A true CN106837266A (en) | 2017-06-13 |
| CN106837266B CN106837266B (en) | 2019-05-03 |
Family
ID=59135729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611218385.4A Active CN106837266B (en) | 2016-12-26 | 2016-12-26 | Gas well drainage underground gas production tool based on jet stream and vortex one |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106837266B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608031A (en) * | 2018-06-14 | 2019-12-24 | 中国石油化工股份有限公司 | Well selection method of underground throttler |
| CN111197472A (en) * | 2019-12-31 | 2020-05-26 | 鄂尔多斯市天泰石油科技开发有限公司 | Gas well underground composite efficient drainage throttling device |
| CN111691861A (en) * | 2020-06-24 | 2020-09-22 | 中国石油天然气股份有限公司 | Gas well downhole throttling, pressure measuring and water discharging integrated tool |
| CN111779468A (en) * | 2020-05-07 | 2020-10-16 | 中国石油天然气股份有限公司 | Horizontal well inclined shaft section vortex water drainage gas production device and water drainage gas production method |
| CN111927400A (en) * | 2020-09-06 | 2020-11-13 | 中国石油天然气集团有限公司 | Downhole throttling vortex drainage and gas production integrated tool |
| CN111997570A (en) * | 2020-09-07 | 2020-11-27 | 中国石油集团渤海钻探工程有限公司 | Gas-liquid separation type drainage gas production device |
| CN113236214A (en) * | 2021-06-05 | 2021-08-10 | 西南石油大学 | Self-excitation type pulse type vortex underground discharging and extracting tool |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005017465A2 (en) * | 2003-08-05 | 2005-02-24 | Vortex Flow, Llc | Apparatus and method for creating a vortex flow |
| CN201778776U (en) * | 2010-08-25 | 2011-03-30 | 中国石油天然气股份有限公司 | Reverse double-helix centrifugal jet downhole throttle |
| US20140326451A1 (en) * | 2005-02-24 | 2014-11-06 | Neil W. Longfellow | Vortex plunger arrangement |
| CN204041022U (en) * | 2014-08-04 | 2014-12-24 | 西安石油大学 | A kind of twofold whirl water pumping gas production downhole tool |
| CN204312036U (en) * | 2014-11-17 | 2015-05-06 | 中国石油天然气股份有限公司 | A kind of differential pressure underground throttle device valve |
-
2016
- 2016-12-26 CN CN201611218385.4A patent/CN106837266B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005017465A2 (en) * | 2003-08-05 | 2005-02-24 | Vortex Flow, Llc | Apparatus and method for creating a vortex flow |
| US20140326451A1 (en) * | 2005-02-24 | 2014-11-06 | Neil W. Longfellow | Vortex plunger arrangement |
| CN201778776U (en) * | 2010-08-25 | 2011-03-30 | 中国石油天然气股份有限公司 | Reverse double-helix centrifugal jet downhole throttle |
| CN204041022U (en) * | 2014-08-04 | 2014-12-24 | 西安石油大学 | A kind of twofold whirl water pumping gas production downhole tool |
| CN204312036U (en) * | 2014-11-17 | 2015-05-06 | 中国石油天然气股份有限公司 | A kind of differential pressure underground throttle device valve |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608031A (en) * | 2018-06-14 | 2019-12-24 | 中国石油化工股份有限公司 | Well selection method of underground throttler |
| CN111197472A (en) * | 2019-12-31 | 2020-05-26 | 鄂尔多斯市天泰石油科技开发有限公司 | Gas well underground composite efficient drainage throttling device |
| CN111779468A (en) * | 2020-05-07 | 2020-10-16 | 中国石油天然气股份有限公司 | Horizontal well inclined shaft section vortex water drainage gas production device and water drainage gas production method |
| CN111779468B (en) * | 2020-05-07 | 2024-03-01 | 中国石油天然气股份有限公司 | Horizontal well inclined shaft section vortex drainage gas production device and drainage gas production method |
| CN111691861A (en) * | 2020-06-24 | 2020-09-22 | 中国石油天然气股份有限公司 | Gas well downhole throttling, pressure measuring and water discharging integrated tool |
| CN111927400A (en) * | 2020-09-06 | 2020-11-13 | 中国石油天然气集团有限公司 | Downhole throttling vortex drainage and gas production integrated tool |
| CN111927400B (en) * | 2020-09-06 | 2022-11-29 | 中国石油天然气集团有限公司 | Downhole throttling vortex drainage and gas production integrated tool |
| CN111997570A (en) * | 2020-09-07 | 2020-11-27 | 中国石油集团渤海钻探工程有限公司 | Gas-liquid separation type drainage gas production device |
| CN113236214A (en) * | 2021-06-05 | 2021-08-10 | 西南石油大学 | Self-excitation type pulse type vortex underground discharging and extracting tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106837266B (en) | 2019-05-03 |
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