CN106555573A - Underground steam flow distribution device - Google Patents
Underground steam flow distribution device Download PDFInfo
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- CN106555573A CN106555573A CN201510620978.2A CN201510620978A CN106555573A CN 106555573 A CN106555573 A CN 106555573A CN 201510620978 A CN201510620978 A CN 201510620978A CN 106555573 A CN106555573 A CN 106555573A
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- flow distribution
- steam
- steam flow
- distribution device
- steam injection
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Abstract
The present invention relates to a kind of oil field oil gas steam injection quarrying apparatus, in particular relate to a kind of underground steam flow distribution device.The underground steam flow distribution device of the present invention drives sealer by phase separating device, layer steam injection distributor and long-acting vapour in commutator, pipe and is connected in sequence；Used cooperatively with phase separator in pipe by commutator, can not only realize single pipe layered with vapour, and the mass dryness fractions such as the single tube of multiple zone, certainty ratio steam distribution in separate layer are realized in the setting by phase separator in pipe, guarantee is assigned to the steam enthalpy ratio of each oil reservoir and is consistent with steam flow ratio, greatly improves the development degree of steam thermal utilization and oil reservoir.
Description
Technical field
The present invention relates to a kind of oil field oil gas steam injection quarrying apparatus, in particular relate to a kind of underground steam assignment of traffic dress
Put.
Background technology
At present during Shengli Oil Field heavy crude reservoir heat extraction by steam injection, general steam injection mining type has accounted for more than 96%, by many
The impact of thin heavy oil interlayer heterogeneity, vertical steam entry profile generally expose uneven problem, and oil reservoir inhales vapour
Thickness only accounts for the 30%-50% of gross thickness, particularly thorny between reservoir, has had a strong impact on the development degree of oil reservoir.
Layer steam injection technical research has been carried out for the problems referred to above both at home and abroad, it is main by adopting ad hoc structure in prior art
The control for realizing steam flow and mass dryness fraction with vapour lock to a certain extent, it is the more commonly used in scene to have three kinds of technology modes：
It is layered quantitative gas filling technique, single pipe layered with vapour technique and concentric tube separated layer gas injection tube technique.
Layered quantitative gas filling technique passes through dispensing valve first one unit of note, and after reaching steam injection amount, the steam injection passage is closed in pitching again,
Change another unit of note, as the steam injection amount of each steam injection unit of the technology mode is fixed, it is not necessary to by machinery or duct
Size be controlled or adjust；Concentric tube separated layer gas injection tube technique well head using double suspensions, down-hole by hang sealer and
Two sections of oil reservoirs are separated by Delaminated steam injecting packer, realize layer steam injection by telescopic slide sealing between inner tube and outer tube,
Steam respectively enters inner and outer tubes from two passages on ground, realizes the steam of two steam injection passages by ground assignment flow process
Flow-control；The current ripe single pipe layered independence that oil reservoir is separated in same well section more than 2-3 with vapour technique
Steam injection unit, simultaneously carries out steam distribution in separate layer to which in a steam injection, and according to the different qualities of each oil reservoir according to design proportion
With vapour, the requirement of layer steam injection has been reached.
In existing steam injection technology, due to causing flowing of the steam water two phase flow in pipe point using the tubular column structure of dual string
Cloth is uneven, so as to cause the steam quality between each layer to distribute unbalanced problem, is assigned to the steam enthalpy of each oil reservoir
The heat content of steam is caused effectively to distribute and utilize than with steam flow than inconsistent, the problem has become restriction
The most critical factor of steam distribution in separate layer technological development and application.
The content of the invention
For the above-mentioned technical problem in the presence of prior art, the present invention proposes a kind of underground steam flow distribution device,
Not only realize the single pipe layered steam injection of multiple zone, and the mass dryness fraction steam injection stratum such as can guarantee that, improve steam thermal utilization
With the development degree of oil reservoir.
To solve above-mentioned technical problem, the underground steam flow distribution device of the present invention by phase separating device in commutator, pipe,
Layer steam injection distributor and long-acting vapour drive sealer and are connected in sequence；In the pipe, phase separating device includes separating device master
Body, the side of the separating device main body are provided with hollow steam injection arm, and the inner chamber of the separating device main body is additionally provided with point
The inner chamber of separating device main body is separated into two parts inner chamber by baffles, the separation baffles, a portion inner chamber with it is described
The intracavity inter-connection of steam injection arm, constitutes the first steam injection passage, and another part inner chamber then constitutes the second steam injection passage.
Used as a modification of the present invention, the commutator inner chamber arranges spinning disk, and the spinning disk is distributed in the shape of a spiral.
As the present invention another improvement, in the pipe, the upper end of phase separating device is provided with hoop, the hoop one end with
The separating device main body is connected, and the other end is connected with the commutator.
Used as another improvement of the present invention, described layer steam injection distributor inner chamber is taper diffusingsurface.
Used as another improvement of the present invention, described long-acting vapour drives sealer includes hollow central canal, the central canal
Sealing device is provided with outer wall, the outer wall upper measurement of the sealing device is provided with heat-sensitive duplex metal, the outer wall of the heat-sensitive duplex metal
Upper measurement is provided with high temperature resistant packing element.Described sealing device includes closed chamber, seal assembly and pressure cap, and the closed chamber is arranged
In the outer wall of the central canal, the seal assembly is arranged between the central canal and the closed chamber, the seal assembly
Upper end is fixed by pressure cap.
The upper and lower ends of described high temperature resistant packing element are respectively arranged with perform ring and lower gear ring, and the bottom of the lower gear ring is arranged
There is pin, by the pin, lower gear ring, closed chamber and central canal are linked together.The lower section of the lower gear ring, in
Anticollision ring is provided with the outer wall of heart pipe.
The upper end of the central canal is connected with joint, and the joint other end is connected with phase separator in pipe, under the central canal
End is provided with change buckle joint, and the long-acting vapour is driven sealer and is connected with down-hole string by becoming buckle joint, carries out steam injection exploitation.
Compared with prior art, it is an advantage of the current invention that being used cooperatively with phase separator in pipe by commutator, no
Can only realize it is single pipe layered with vapour, and by the setting of phase separator in pipe realize the mass dryness fractions such as the single tube of multiple zone,
Certainty ratio steam distribution in separate layer, it is ensured that the steam enthalpy ratio and steam flow ratio for being assigned to each oil reservoir is consistent, improves steam heat
The development degree of utilization rate and oil reservoir, compensate for pointed deficiency in background technology.
Description of the drawings
Fig. 1 is the mass dryness fraction flow distribution device schematic diagrams such as the underground steam of the present invention；
Fig. 2 is the 3-D view of the commutator of Fig. 1；
Fig. 3 is the sectional view of phase separating device in the pipe of Fig. 1；
Fig. 4 is the sectional view of the layer steam injection distributor of Fig. 1；
Fig. 5 is the half sectional view that the long-acting vapour of Fig. 1 drives packer.
Specific embodiment
Detailed description for the present invention and technology contents, coordinate description of the drawings as follows, but accompanying drawing only provides and refers to and say
It is bright to be used, not for being any limitation as to the present invention.
As shown in Fig. 1 to 5, underground steam flow distribution device, by phase separating device 2, layering note in commutator 1, pipe
Vapour distributor 3 and long-acting vapour drive sealer 4 and are connected in sequence；In pipe, phase separating device 2 includes separating device main body 34,
The side of the separating device main body 34 is provided with hollow steam injection arm 33, and the inner chamber of the separating device main body 34 also sets up
There are separation baffles 32, the inner chamber of separating device main body 34 is separated into two parts inner chamber by the separation baffles 32, wherein one
Divide the intracavity inter-connection of inner chamber and the steam injection arm 33, constitute the first steam injection passage, another part inner chamber then constitutes second
Steam injection passage.In pipe, the upper end of phase separating device 2 is additionally provided with hoop 31,31 one end of hoop and separating device main body
34 are connected, and the other end is connected with commutator 1.Spinning disk is set in 1 inner chamber of commutator, the spinning disk is distributed in the shape of a spiral.
In the embodiment show in figure 4, layer steam injection distributor 3 is internally provided with circular arc import 41, aditus laryngis 42 and taper and expands
Scattered face 43.
In Figure 5, long-acting vapour drives sealer 4 includes hollow central canal 52, is provided with the outer wall of the central canal 52
Sealing device, the outer wall upper measurement of the sealing device are provided with heat-sensitive duplex metal 57, and the outer wall upper measurement of the heat-sensitive duplex metal 57 is provided with
High temperature resistant packing element 58.In a preferred embodiment, sealing device includes closed chamber 55, seal assembly 54 and pressure
Cap 53, the closed chamber 55 are set in the outer wall of the central canal 52, seal assembly 54 be arranged on the central canal 52 with
Between the closed chamber 55,54 upper end of seal assembly is fixed by pressure cap 53.The upper and lower ends of high temperature resistant packing element 58 point
Perform ring 56 and lower gear ring 59 are not provided with, the bottom of the lower gear ring 59 is provided with pin 510, by the pin 510,
Lower gear ring 59, closed chamber 55 and central canal 52 are linked together, the radial displacement of high temperature resistant packing element 58 is fettered.Lower gear
Anticollision ring 511 is provided with the lower section of ring 59, the outer wall of central canal 52.The upper end of central canal 52 is connected with joint 51,
51 other end of joint is connected with phase separator 3 in pipe, and the lower end of the central canal 52 is provided with change buckle joint 512, long
Effect vapour is driven sealer 4 and is connected with down-hole string by becoming buckle joint 512, carries out steam injection exploitation.
When steam injection is carried out using underground steam flow distribution device, mainly including following several stages：
(1) gas and water two phase flow signals rectification：Two-phase mixtures fluid to be implanted flows into commutator 1 first, works as two-phase mixtures
Fluid when entering commutator 1, in the presence of spinning disk, due to the density variation between gas phase and liquid phase, by from
Heart effect gas-liquid two-phase is distributed in the range of the different distance of the center of circle, is rectified into axisymmetric flow pattern, and then will be biphase
Fluid is diametrically separated, and liquid phase is close to wall, and gas phase concentrates on tubing string central axis.
(2) mass dryness fraction such as steam separates：When the gas-liquid two-phase with axial symmetry flow pattern is entered manages interior phase separating device 3,
On the basis of steam flow pattern is not affected, biphase gas and liquid flow is separated by separation baffles 32, splits the circulating face of stream
Product is directly proportional to the steam flow size for treating oiling layer, and the uninterrupted of distribution is converted to the distribution of conduit cross-sectional area,
The steam distribution of i.e. achievable etc. mass dryness fraction.
(3) steam flow certainty ratio distribution：When steam injection supervisor 34 and steam injection arm 33 are assigned to when mass dryness fractions such as steam,
Realize that the steam flow into steam injection supervisor 34 and steam injection arm 33 presses the aditus laryngis 42 of design by layer steam injection distributor 4
Area ratio is allocated, so as to realize single tube certainty ratio steam distribution in separate layer.
(4) Inter-zonal packing：When steam enters long-acting vapour drives sealer 4, packer temperature gradually rises, by heat
Quick bimetallic 57 gradually realizes the swollen envelope of high temperature resistant packing element 58, and then realizes Inter-zonal packing.
When needing to carry out steam injection operation to multiple oil reservoirs, it is only necessary to which many set underground steam flow distribution devices are connected successively
Connect, sealer 4 is driven by long-acting vapour different zonal isolations are opened, you can carry out the steam injection of multiple zone.
Presently preferred embodiments of the present invention is the foregoing is only, is not used to limit the scope of the claims of the present invention, other use this
The equivalence changes of bright patent spirit, all should all belong to the scope of the claims of the present invention.
Claims (9)
1. underground steam flow distribution device, it is characterised in that：The distributor drives sealer by phase separating device, layer steam injection distributor and long-acting vapour in commutator, pipe and is connected in sequence；In the pipe, phase separating device includes separating device main body, the side of the separating device main body is provided with hollow steam injection arm, the inner chamber of the separating device main body is additionally provided with separation baffles, the inner chamber of separating device main body is separated into two parts inner chamber by the separation baffles, the intracavity inter-connection of a portion inner chamber and the steam injection arm, the first steam injection passage is constituted, another part inner chamber then constitutes the second steam injection passage.
2. underground steam flow distribution device as claimed in claim 1, it is characterised in that the commutator inner chamber arranges spinning disk, the spinning disk is distributed in the shape of a spiral.
3. underground steam flow distribution device as claimed in claim 1 or 2, it is characterised in that the upper end of phase separating device is provided with hoop in the pipe, and the hoop one end is connected with the separating device main body, and the other end is connected with the commutator.
4. underground steam flow distribution device as claimed in claim 3, it is characterised in that described layer steam injection distributor inner chamber is set to taper diffusingsurface.
5. underground steam flow distribution device as claimed in claim 3, it is characterized in that, described long-acting vapour drives sealer includes hollow central canal, sealing device is provided with the outer wall of the central canal, the outer wall upper measurement of the sealing device is provided with heat-sensitive duplex metal, and the outer wall upper measurement of the heat-sensitive duplex metal is provided with high temperature resistant packing element.
6. underground steam flow distribution device as claimed in claim 5, it is characterized in that, described sealing device includes closed chamber, seal assembly and pressure cap, the closed chamber is set in the outer wall of the central canal, the seal assembly is arranged between the central canal and the closed chamber, and the seal assembly upper end is fixed by pressure cap.
7. underground steam flow distribution device as claimed in claim 6, characterized in that, the upper and lower ends of described high temperature resistant packing element are respectively arranged with perform ring and lower gear ring, the bottom of the lower gear ring is provided with pin, by the pin, lower gear ring, closed chamber and central canal are linked together.
8. underground steam flow distribution device as claimed in claim 7, it is characterised in that be provided with anticollision ring on the lower section of lower gear ring, the outer wall of central canal.
9. underground steam flow distribution device as claimed in claim 7, it is characterized in that, the upper end of the central canal is connected with joint, the joint other end is connected with phase separator in pipe, the lower end of the central canal is provided with change buckle joint, the long-acting vapour is driven sealer and is connected with down-hole string by becoming buckle joint, carries out steam injection exploitation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510620978.2A CN106555573A (en) | 2015-09-25 | 2015-09-25 | Underground steam flow distribution device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510620978.2A CN106555573A (en) | 2015-09-25 | 2015-09-25 | Underground steam flow distribution device |
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| Publication Number | Publication Date |
|---|---|
| CN106555573A true CN106555573A (en) | 2017-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510620978.2A Pending CN106555573A (en) | 2015-09-25 | 2015-09-25 | Underground steam flow distribution device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111075416A (en) * | 2019-12-12 | 2020-04-28 | 中国石油化工股份有限公司 | Gas-liquid equal-dryness constant-flow intelligent regulation and control device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2237714Y (en) * | 1995-01-20 | 1996-10-16 | 江苏省扬中市机械密封件厂 | Heat-production packer for oil well |
| CN2485423Y (en) * | 2001-04-29 | 2002-04-10 | 中国石油天然气股份有限公司 | Casing column for layered steam distribution process |
| CN2797620Y (en) * | 2005-05-01 | 2006-07-19 | 管丙金 | Compensating type thermosensitive metal packer |
| CN201277023Y (en) * | 2008-09-18 | 2009-07-22 | 中国石油天然气集团公司 | Steam allotter |
| CN202215220U (en) * | 2011-09-23 | 2012-05-09 | 中国石油天然气股份有限公司 | Concentric type lamination steam driving underground process tubular column |
| CN202767965U (en) * | 2012-09-24 | 2013-03-06 | 中国石油大学(华东) | Layering steam injection uniform steam-distributing tubular column |
| CN203642150U (en) * | 2013-12-06 | 2014-06-11 | 上海新业锅炉高科技有限公司 | Subcritical saturated steam equal-dryness distributor |
| CN204371275U (en) * | 2014-11-10 | 2015-06-03 | 中国石油化工股份有限公司 | A kind of underground steam flow mass dryness fraction distributes regulation device |
| CN205243489U (en) * | 2015-09-25 | 2016-05-18 | 中国石油化工股份有限公司 | Steam flow distributor in pit |
-
2015
- 2015-09-25 CN CN201510620978.2A patent/CN106555573A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2237714Y (en) * | 1995-01-20 | 1996-10-16 | 江苏省扬中市机械密封件厂 | Heat-production packer for oil well |
| CN2485423Y (en) * | 2001-04-29 | 2002-04-10 | 中国石油天然气股份有限公司 | Casing column for layered steam distribution process |
| CN2797620Y (en) * | 2005-05-01 | 2006-07-19 | 管丙金 | Compensating type thermosensitive metal packer |
| CN201277023Y (en) * | 2008-09-18 | 2009-07-22 | 中国石油天然气集团公司 | Steam allotter |
| CN202215220U (en) * | 2011-09-23 | 2012-05-09 | 中国石油天然气股份有限公司 | Concentric type lamination steam driving underground process tubular column |
| CN202767965U (en) * | 2012-09-24 | 2013-03-06 | 中国石油大学(华东) | Layering steam injection uniform steam-distributing tubular column |
| CN203642150U (en) * | 2013-12-06 | 2014-06-11 | 上海新业锅炉高科技有限公司 | Subcritical saturated steam equal-dryness distributor |
| CN204371275U (en) * | 2014-11-10 | 2015-06-03 | 中国石油化工股份有限公司 | A kind of underground steam flow mass dryness fraction distributes regulation device |
| CN205243489U (en) * | 2015-09-25 | 2016-05-18 | 中国石油化工股份有限公司 | Steam flow distributor in pit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111075416A (en) * | 2019-12-12 | 2020-04-28 | 中国石油化工股份有限公司 | Gas-liquid equal-dryness constant-flow intelligent regulation and control device |
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Application publication date: 20170405 |
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