CN202545202U - Downhole tool for vortex liquid discharge and gas collection in low-yield natural gas well - Google Patents
Downhole tool for vortex liquid discharge and gas collection in low-yield natural gas well Download PDFInfo
- Publication number
- CN202545202U CN202545202U CN2012200339727U CN201220033972U CN202545202U CN 202545202 U CN202545202 U CN 202545202U CN 2012200339727 U CN2012200339727 U CN 2012200339727U CN 201220033972 U CN201220033972 U CN 201220033972U CN 202545202 U CN202545202 U CN 202545202U
- Authority
- CN
- China
- Prior art keywords
- heliconid
- deflector
- downhole tool
- chute
- section
- 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.)
- Withdrawn - After Issue
Links
Images
Abstract
The utility model discloses a downhole tool for vortex liquid discharge and gas collection in a low-yield natural gas well, which comprises a spiral body and a diversion body. The spiral body is provided with a spiral boss and an overflow groove, the part of the overflow groove is changed into a cross-section overflow groove at the inlet of the spiral body, and the area of the inward extension part of the cross-section overflow groove gradually becomes smaller. The liquid carrying rate in the process of water discharge and gas collection can be increased, and the natural gas yield of the gas well can be stabilized and increased.
Description
Technical field
The utility model relates to a kind of eddy current gas production discharge opeing instrument that is used for the low yield natural gas extraction.Particularly be directed in the low yield low-pressure gas well recovery process and be used to discharge the down-hole hydrops, the output of raising rock gas.Also can be used for similar field application such as coal bed gas well.The utilization vortex principle is that power is discharged the down-hole hydrops with the rock gas.Belong to petroleum gas down-hole field of tool.
Background technique
In gas exploitation course,, complicated geological condition produces certain liquid (like water because generally can being accompanied by rock gas; Former wet goods) and tiny solid matter.The initial stage of production because the rock gas of down-hole has very big pressure store down below, the down-hole can not produce the hydrops phenomenon during general initial stage exploitation.But along with the continuity of exploitation time, certain variation has taken place in mine gas pressure and bottom.Can make that at leisure the liquid in the corresponding stratum also flows in the pit shaft thereupon.Along with the prolongation of exploitation time, the down-hole hydrops can cause the gas well can't flow production because the increasing of hydrops influx and gas production decline make the minimizing of liquid carry over cause the down-hole hydrops progressively to strengthen.
Can adopt corresponding vortex effluent gas production instrument for the relatively large gas well of gas production; This instrument is applied for a patent and is authorized, and its patent No. is 200920034544.4, and patent name is: the vortex effluent conveyer in the natural gas extraction; This instrument can solve the discharge opeing problem of atm number well preferably; But for the gas well of little output, the use of above-mentioned instrument has received certain restriction, and the area of passage at the heliconid place of instrument sharply reduces; Can form corresponding area of passage sudden change and produce very big turbulent flow in spirochetal multiphase flow inlet, make eddy current tell on and have a greatly reduced quality.
The model utility content
In order to solve the problem that above-mentioned existing technology exists, the utility model discloses a kind of downhole tool that is used for the vortex effluent gas production of low yield gas well.
The technological scheme of the utility model is: a kind of downhole tool that is used for the vortex effluent gas production of low yield gas well; Include heliconid, deflector; It is characterized in that: spiral boss is arranged on the said heliconid and cross chute; Crossing chute is that variable cross section is crossed chute in the heliconid ingress, and its area of extension that variable cross section is crossed the inside portion of chute is descending gradual change.Compare with 200920034544.4 patents; The heliconid of this patent is with respect to the intermediate of aforementioned patent, and deflector is with respect to the water conservancy diversion cover of aforementioned patent, and spiral boss is with respect to the spiral stream guidance blade of aforementioned patent; Its difference is: the spiral stream guidance blade only is a slim panel; Spiral boss then has certain thickness and width, crosses chute with regard to its degree of depth and width comparatively speaking between spiral boss, and is shallow narrower than formed mistake chute between spiral stream guidance blade; The chute excessively and the shaft in wall of spiral boss have just formed one than narrow space like this;, under the pressure effect of down-hole, will be full of therebetween very soon for the multiphase flow of small flow, and spiral rises and discharges outside the well.
Multiphase flow is descending gradual change in the extension of overcurrent groove area to inside of heliconid entrance part.In abortion amount gas well, be master's laminar condition owing to require the fluidised form of multiphase flow in heliconid will reach with ring film stream.Therefore spirochetal area of passage can account for very little ratio with respect to the sectional area of well casing, but from the multiphase flow requirement of ring film stream, does not allow the degree of depth of chute too low, can influence the generation and the intensity of ring film stream like this.Therefore spirochetal chute excessively keeps certain depth, thereby makes its width can become smaller.In the appearance of spirochetal inlet boss, thereby the steady body of multiphase flow that influences in the oil pipe gets into heliconid, and produces greatly turbulent flow.And the earth has consumed the kinetic energy of multiphase flow.And then have influence on the eddy current attitude and in oil pipe, have intensity and an action radius.So, the area of passage of screw type realized from big to small the area of passage of gradual change in spirochetal multiphase flow ingress in certain distance.Realize the excessive variation of area of passage shape of part of the little outlet of big import.
Two junction plane shapes of the connecting part of said heliconid and deflector are close, and area is equal basically.With regard to 200920034544.4 patents, the architectural difference of the junction that it is corresponding is bigger, but because the flow of multiphase flow is big, this one can not form turbulent flow, and multiphase flow can directly get into heliconid.Multiphase flow for small flow; When two junction planes differ greatly; When particularly spirochetal junction plane is bigger than the area of the junction plane of deflector, can form the boss of outstanding deflector junction plane in spirochetal bottom, after the multiphase flow of small flow comes out from the pod apertures of deflector; Will turbulent flow take place at this, and effect is carried in influence.Two junction planes outer edge line separately is incomplete circle, and diameter of a circle equates that perhaps spirochetal diameter of a circle is slightly less than the diameter of a circle of deflector.
The cross section of the initial position of spiral boss has formed original surface; The limit of this original surface ragged edge has been an initial line; The cross section of the final position of deflector has formed terminal surface; Also be the junction plane of aforesaid deflector, the incomplete round-formed chimb of this terminal surface, the line fundamental sum heliconid of the mid point of this chimb and the mid point of above-mentioned initial line is parallel with the medial axis that deflector forms.This improved meaning is: if chimb is not corresponding with an initial line; Line such as the center of circle of mid point that plays initial line and pod apertures is parallel with the medial axis, and after multiphase flow came out from pod apertures, multiphase flow was understood the directly original surface of impact spiral boss; And turbulent flow takes place, effect is carried in influence.
Below through accompanying drawing the utility model is further explained.
Description of drawings
Fig. 1 is the downhole tool structure of eddy current water pumping gas production and uses schematic representation;
Fig. 2 is the binding site plan view of heliconid and deflector;
Fig. 3 is the binding site right elevation of heliconid and deflector;
Fig. 4 is the sectional drawing of the binding site heliconid junction plane of heliconid and deflector;
Fig. 5 is the sectional drawing of the binding site deflector junction plane of heliconid and deflector.
Wherein: 1 is the gas production oil pipe; 2 are the multiphase flow fluidised form behind the process heliconid; 3 is the fish head; 4 is heliconid; 5 was chute; 6 is the multiphase flow fluidised form in the heliconid; 7 cross chute for variable cross section; 8 is deflector; 9 is the multiphase flow fluidised form in the deflector; 10 is seat envelope device axle; 11 is seat envelope device spring detent; 12 is the deblocking spring; 13 are tubing coupling; 14 are the multiphase flow fluidised form in the gas production oil pipe; 15 are the gas production oil pipe; 16 play initial line for spiral boss; 17 is the deflector chimb; 18 is spiral boss.
Embodiment
Low yield eddy current water pumping gas production downhole tool as shown in Figure 1.Entire tool mainly is made up of fish 3, heliconid 4, deflector 8, seat envelope device axle 10, seat envelope device spring detent 11, deblocking spring 12.Wherein, fish 3, heliconid 4 and deflector 8 and seat envelope device axle 10 screw thread through separately is connected.11 envelope device spring detents then slide on 10 envelope device axles, and realize the location up and down to 11 envelope device spring detents through the external diameter of 8 deflectors and the big end of 10 envelope device axles.12 deblocking springs then are installed in the end of 11 envelope spring detents with screw.
Seat envelope device by seat envelope device axle 10, seat envelope device spring detent 11 and deblocking spring 12 are formed is realized vertical the envelope of entire tool string in oil pipe, the entire tool string is fixed on the depth location of oil pipe needs.
Like Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5, spiral boss 18 is arranged on the said heliconid 4 and cross chute 5.Compare with 200920034544.4 patents; The heliconid 4 of this patent is with respect to the intermediate of aforementioned patent, and deflector is with respect to the water conservancy diversion cover of aforementioned patent, and spiral boss 18 is with respect to the spiral stream guidance blade of aforementioned patent; Its difference is: the spiral stream guidance blade only is a slim panel; Spiral boss 18 then has certain thickness and width, 18 of spiral boss cross chute 5 comparatively speaking with regard to its degree of depth and width, shallow narrower than formed mistake chute between spiral stream guidance blade; The chute 5 of crossing between the spiral boss 18 has just formed one than narrow space with gas production oil pipe 1 inwall like this;, under the pressure effect of down-hole, will be full of therebetween very soon for the multiphase flow of small flow, and spiral rises and discharges outside the well.
Multiphase flow is crossed the extension of chute 7 areas to inside at the variable cross section of heliconid 4 ingress and is descending gradual change.In abortion amount gas well, be master's laminar condition owing to require the fluidised form of multiphase flow in heliconid 4 will reach with ring film stream.Therefore the area of passage of heliconid 4 can account for very little ratio with respect to the sectional area of gas production oil pipe 1, but from the multiphase flow requirement of ring film stream, does not allow the degree of depth of chute 5 too low, can influence the generation and the intensity of ring film stream like this.Therefore the chute 5 of crossing of heliconid 4 keeps certain depth, thereby makes its width can become smaller.In the appearance of inlet's spiral boss 18 of heliconid 4, thereby the multiphase flow that influences in the gas production oil pipe 1 steadily gets into heliconid 4, produces greatly turbulent flow.Greatly consumed the kinetic energy of multiphase flow.And then have influence on the eddy current attitude and in gas production oil pipe 1, have intensity and an action radius.So, the area of passage of screw type realized from big to small the area of passage of gradual change in the multiphase flow ingress of heliconid 4 in certain distance, realize the excessive variation of area of passage shape of part of the little outlet of big import.
Heliconid 4 is close with two junction plane shapes of the connecting part of deflector 8, and area is equal basically.With regard to 200920034544.4 patents, the architectural difference of the junction that it is corresponding is bigger, but because the flow of multiphase flow is big, this one can not form turbulent flow, and multiphase flow can directly get into heliconid 4.Multiphase flow for small flow; When two junction planes differ greatly; When particularly the junction plane of heliconid 4 is bigger than the area of the junction plane of deflector 8, can form the boss of outstanding deflector 8 junction planes in the bottom of heliconid 4, after the multiphase flow of small flow comes out from the pod apertures of deflector 8; Will turbulent flow take place at this, and effect is carried in influence.Two junction planes outer edge line separately is incomplete circle, and diameter of a circle equates that perhaps the diameter of a circle of heliconid 4 is slightly less than the diameter of a circle of deflector 8.
The cross section of the initial position of spiral boss 18 has formed original surface; The limit of this original surface ragged edge has been an initial line 16; The cross section of the final position of deflector 8 has formed terminal surface; Also be the junction plane of aforesaid deflector 8, incomplete round-formed three chimbs 17 of this terminal surface, the line fundamental sum heliconid 4 of the mid point of chimb 17 and the mid point of above-mentioned initial line 16 is parallel with the medial axis that deflector 8 forms.This improved meaning is: if chimb 17 is not corresponding with an initial line 16; Line such as the center of circle of mid point that plays initial line 16 and pod apertures is parallel with the medial axis, and after multiphase flow came out from pod apertures, multiphase flow was understood the directly original surface of impact spiral boss 18; And turbulent flow takes place, effect is carried in influence.
The trough rim curve that variable cross section is crossed chute 7 can be various curves, but must be not have flex point continuously.Further reduce kinetic energy rejection through long-pending can the making in abortion amount, the low-pressure gas well production of the gradual change overflow section of this ingress, improve the liquid rate of taking in the gas well production greatly.Improve gas well output, reduce the stopping production drain time of gas well.
200920034544.4 patents of comparing are crossed chute 5 width 70% o'clock less than heliconid 4 external diameters on the heliconid 4, adopt this instrument effective.
Claims (4)
1. downhole tool that is used for the vortex effluent gas production of low yield gas well; Include heliconid (4), deflector (8); It is characterized in that: spiral boss (18) is arranged on the said heliconid (4) and cross chute (5); Crossing chute (5) is that variable cross section is crossed chute (7) in heliconid (4) ingress, and variable cross section is crossed chute (7) its area of extension to inside and is descending gradual change.
2. a kind of downhole tool that is used for the vortex effluent gas production of low yield gas well according to claim 1; It is characterized in that: said heliconid (4) is incomplete circle with two junction planes outer edge line separately of the connecting part of deflector (8), and diameter of a circle diameter of a circle equal or heliconid (4) is slightly less than the diameter of a circle of deflector (8).
3. a kind of downhole tool that is used for the vortex effluent gas production of low yield gas well according to claim 1; It is characterized in that: the cross section of the initial position of said spiral boss (18) has formed original surface; The limit of this original surface ragged edge has been initial line (16); The cross section of the final position of deflector (8) has formed terminal surface; Incomplete round-formed chimb (17) of this terminal surface, the line fundamental sum heliconid (4) of the mid point of this chimb (17) and the mid point of above-mentioned initial line is parallel with the medial axis that deflector (8) forms.
4. a kind of downhole tool that is used for the vortex effluent gas production of low yield gas well according to claim 1 is characterized in that: the trough rim curve that variable cross section is crossed chute (7) is the curve that does not have flex point continuously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200339727U CN202545202U (en) | 2012-02-03 | 2012-02-03 | Downhole tool for vortex liquid discharge and gas collection in low-yield natural gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200339727U CN202545202U (en) | 2012-02-03 | 2012-02-03 | Downhole tool for vortex liquid discharge and gas collection in low-yield natural gas well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202545202U true CN202545202U (en) | 2012-11-21 |
Family
ID=47165845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200339727U Withdrawn - After Issue CN202545202U (en) | 2012-02-03 | 2012-02-03 | Downhole tool for vortex liquid discharge and gas collection in low-yield natural gas well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202545202U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536759A (en) * | 2012-02-03 | 2012-07-04 | 深圳乐满油气技术有限公司 | Downhole tool for eddy-current liquid-discharging gas production of low-yield natural-gas well |
| CN103924948A (en) * | 2014-04-02 | 2014-07-16 | 中国石油天然气股份有限公司 | Vortex flow state simulation visual test device |
-
2012
- 2012-02-03 CN CN2012200339727U patent/CN202545202U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536759A (en) * | 2012-02-03 | 2012-07-04 | 深圳乐满油气技术有限公司 | Downhole tool for eddy-current liquid-discharging gas production of low-yield natural-gas well |
| CN102536759B (en) * | 2012-02-03 | 2016-08-03 | 深圳乐满油气技术有限公司 | A kind of downhole tool of the vortex effluent gas production for the low yield natural gas well |
| CN103924948A (en) * | 2014-04-02 | 2014-07-16 | 中国石油天然气股份有限公司 | Vortex flow state simulation visual test device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106837266B (en) | Gas well underground drainage and gas production tool based on integration of jet flow and vortex flow | |
| CN102536759A (en) | Downhole tool for eddy-current liquid-discharging gas production of low-yield natural-gas well | |
| CN202545202U (en) | Downhole tool for vortex liquid discharge and gas collection in low-yield natural gas well | |
| CN104343424B (en) | Coalbed-methane horizontal-well PE (poly ethylene) screen pipe well completion application process method | |
| CN206468372U (en) | A kind of automatic slag-discharging water draining device of gas pumping pipe | |
| CN103966985B (en) | A kind of side direction goes out to flow the absorption basin of rotary roll energy dissipating | |
| CN201013344Y (en) | Supporting equipment for bottom water oil reservoir potential balance mining | |
| CN104452403A (en) | Novel guide type high-concentration conical slag remover | |
| CN104264639A (en) | Underflow type stair stilling pool energy consumption system | |
| CN203978395U (en) | Varying pitch eddy current guiding device | |
| CN204126608U (en) | Many helicals vortex drainage gas production tool | |
| CN204644993U (en) | A kind of shaft structure being communicated with outlet structure escape works | |
| CN201620826U (en) | Bottom-water reservoir oil-water zoned string | |
| CN205936479U (en) | Sand bailing pen point | |
| CN204343255U (en) | Structure of canal system hydraulic engineering through high-fall valley | |
| CN204552716U (en) | A kind of eddy current dewatering type underground throttle device | |
| CN203515542U (en) | Downhole hydraulic control type fully-opened sliding sleeve sand blasting and packing integrated staged fracturing device | |
| CN201843521U (en) | Side tracking bent pipe guider | |
| CN202866677U (en) | Rotational flow centering guide | |
| CN205259149U (en) | Mould bag that sets up leather cup blocks water and only starches device | |
| CN106481281B (en) | Tubular column structure and coal bed gas well system of coal bed gas well | |
| CN205259978U (en) | Water coal slime collection device | |
| CN204492713U (en) | A kind of twin-stage desanding treater of sand-washing fluid | |
| CN101851909B (en) | H-shaped shaft flood discharge hole | |
| CN102561279B (en) | Water column for river drainage and drainage method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121121 Effective date of abandoning: 20160803 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |