CN204627573U - The column apparatus of SAGD dual horizontal well - Google Patents
The column apparatus of SAGD dual horizontal well Download PDFInfo
- Publication number
- CN204627573U CN204627573U CN201520128838.9U CN201520128838U CN204627573U CN 204627573 U CN204627573 U CN 204627573U CN 201520128838 U CN201520128838 U CN 201520128838U CN 204627573 U CN204627573 U CN 204627573U
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- long tube
- tube
- sleeve pipe
- column apparatus
- well
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- 238000010796 Steam-assisted gravity drainage Methods 0.000 title claims abstract description 34
- 230000009977 dual effect Effects 0.000 title claims abstract description 23
- 238000005516 engineering process Methods 0.000 claims abstract description 32
- 239000012530 fluid Substances 0.000 claims abstract description 30
- 238000010793 Steam injection (oil industry) Methods 0.000 claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 claims abstract description 21
- 238000012360 testing method Methods 0.000 claims description 12
- 239000000243 solution Substances 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 27
- 235000019198 oils Nutrition 0.000 description 27
- 238000000034 method Methods 0.000 description 15
- 125000004122 cyclic group Chemical group 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 238000005086 pumping Methods 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000007664 blowing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 235000019476 oil-water mixture Nutrition 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model provides a kind of column apparatus of SAGD dual horizontal well, column apparatus is used for the lifting technology of the oil production method of SAGD dual horizontal well, SAGD dual horizontal well comprises steam injection well and producing well, column apparatus is arranged in producing well, column apparatus comprises: sleeve pipe, comprise the sleeve pipe vertical section, sleeve pipe changeover portion and the sleeve pipe horizontal segment that connect successively, the upper end of sleeve pipe vertical section is connected to the well head of producing well; Screen casing, one end of screen casing is connected in sleeve pipe horizontal segment, and screen casing extends in the horizontal direction; Long tube and short tube, parallel is arranged in sleeve pipe, and long tube and short tube all extend in screen casing, and short tube is arranged on the top of long tube, and long tube protrudes from short tube in the horizontal direction, and wherein, reservoir fluid is lifted to ground by long tube and/or short tube.The lifting technology operating mode that the technical solution of the utility model solves SAGD shallow-layer oil exploitation in prior art is complicated, the problem that equipment use is limited.
Description
Technical field
The utility model relates to SAGD Techniques for super heavy oil recovery field, in particular to a kind of column apparatus of SAGD dual horizontal well.
Background technology
SAGD (SAGD) technology is used for super heavy oil recovery.In the produce oil stage, need the oil water mixture in producing well to be lifted to ground.In lifting process, have that downhole fluid temperature is high, liquid measure is large, down-hole may exist the problems such as hydrogen sulfide corrosion.
For the lifting technology of SAGD shallow-layer oil exploitation, gaslift in prior art, can be used to complete the lifting of reservoir fluid.Specifically natural gas is injected producing well and flux oil aqueous mixtures, and reduce density, be more conducive to the lifting of reservoir fluid like this.But said method needs at the on-the-spot natural air-air source with abundance of exploitation.If can not provide the source of the gas needed for production, then such scheme does not have feasibility.
In order to solve technique scheme Problems existing, in prior art, adopt electric submersible pump to realize reservoir fluid lifting.But due to downhole fluid temperature high, electric submersible pump works long hours under not being suitable for worst hot case, therefore needs often to overhaul electric submersible pump, and then affect production efficiency, can increase cost like this.
In order to solve electric submersible pump Problems existing in lifting technology, in prior art, adopt sucker rod pump to complete reservoir fluid lifting.In conjunction with domestic common situation, exploiting for shallow-layer SAGD generally uses sucker rod pump to realize lifting technology, but sucker rod pump lifting technology is for well track, and reservoir buried depth all there are certain requirements, especially enter huge discharge oil well pump under in shallow oil reservoir pit shaft, be easy to rod string eccentric wear occurs.And manufacturing process front end pressure reduction is large, producing well horizontal segment rear end development degree reduces.In addition, proceeding to the produce oil stage by the cyclic preheat stage in the process that SAGD recovers the oil needs to change a large amount of pipeline equipment to producing well, increases complex process degree.
Therefore, there is process conditions complexity, the problem that equipment use is limited for the lifting technology of SAGD shallow-layer oil exploitation in above-mentioned prior art.
Utility model content
Main purpose of the present utility model is the column apparatus providing a kind of SAGD dual horizontal well, complicated with the lifting technology operating mode solving SAGD shallow-layer oil exploitation in prior art, the problem that equipment use is limited.
To achieve these goals, according to an aspect of the present utility model, provide a kind of column apparatus of SAGD dual horizontal well, column apparatus is used for the lifting technology of the oil production method of SAGD dual horizontal well, SAGD dual horizontal well comprises steam injection well and producing well, and column apparatus is arranged in producing well, and column apparatus comprises: sleeve pipe, comprise the sleeve pipe vertical section, sleeve pipe changeover portion and the sleeve pipe horizontal segment that connect successively, the upper end of sleeve pipe vertical section is connected to the well head of producing well; Screen casing, one end of screen casing is connected in sleeve pipe horizontal segment, and screen casing extends in the horizontal direction; Long tube and short tube, parallel is arranged in sleeve pipe, and long tube and short tube all extend in screen casing, and short tube is arranged on the top of long tube, and long tube protrudes from short tube in the horizontal direction, and wherein, reservoir fluid is lifted to ground by long tube and/or short tube.
Further, be provided with screen pipe hanger in sleeve pipe horizontal segment, screen casing is connected on sleeve pipe by screen pipe hanger.
Further, the end that long tube and short tube are positioned at screen casing is provided with guide shoe, and the end opens of guide shoe has through hole.
Further, long tube comprises the first long tube and the second long tube that connect successively, and the second long tube is positioned at the below of the first long tube, and the junction of the first long tube and the second long tube is positioned at sleeve pipe changeover portion, and the diameter of the first long tube is greater than the diameter of the second long tube.
Further, connected by cross-over sub device between the first long tube and the second long tube.
Further, column apparatus also comprises control appliance, and control appliance is arranged on ground and is connected with well head, and long tube is connected on the control device respectively by long tube pipe hanger with short tube pipe hanger with short tube, and control appliance controls opening or cutting out of long tube and short tube.
Further, column apparatus also comprises testing tube, and testing tube is arranged in long tube, and the two ends of testing tube are concordant with the two ends of long tube respectively.
Application the technical solution of the utility model, column apparatus is used for the lifting technology of the oil production method of SAGD dual horizontal well.In lifting technology, only the bottom pressure in producing well need be made to be greater than reservoir fluid and be lifted to the exploitation resistance overcome needed for ground, reservoir fluid just can be made to be lifted to ground by the long tube 30 of column apparatus and/or short tube 40.Above-mentioned lifting technology does not need to change pumping unit in producing well, and affected by environment little, and technique is simple.Therefore the technical solution of the utility model effectively solves the lifting technology operating mode complexity of SAGD shallow-layer oil exploitation in prior art, the problem that equipment use is limited.。
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 shows the structural representation of the embodiment of the column apparatus according to SAGD dual horizontal well of the present utility model;
Fig. 2 shows the schematic flow sheet of the lifting technology of the column apparatus using SAGD dual horizontal well of the present utility model.
Wherein, above-mentioned accompanying drawing comprises the following drawings mark:
10, sleeve pipe; 11, sleeve pipe vertical section; 12, sleeve pipe changeover portion; 13, sleeve pipe horizontal segment; 131, screen pipe hanger; 20, screen casing; 30, long tube; 31, the first long tube; 32, the second long tube; 40, short tube; 50, guide shoe; 60, cross-over sub device; 70, control appliance; 80, long tube pipe hanger; 90, short tube pipe hanger; 100, testing tube.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
In prior art, for the lifting technology of SAGD oil recovery technique, particularly for the exploitation of shallow-layer oil, the column apparatus in producing well all need be taken out when proceeding to the production phase from the cyclic preheat stage, and change a large amount of pumping unit.And because of particularity and the geological condition of China of the exploitation of shallow-layer oil, pumping unit is electric submersible pump, sucker rod pump etc. such as, all existing can not long-term stable operation, and the flimsy problem of equipment, seriously restricts oil well output, increases workover treatment cost.
For above-mentioned problems of the prior art, inventor proposes first in the lifting technology of SAGD oil recovery technique, retain the well group equipment in producing well when proceeding to the production phase from the cyclic preheat stage, and realize reservoir fluid blowing production by the method for the bottom pressure suitably improving steam injection well.Owing to not needing other pumping unit, the SAGD oil recovery technique of the application simplifies the processing step of lifting technology greatly, and reduces the restriction that lifting technology is subject to environment and equipment.
As shown in Figure 1, the column apparatus of the present embodiment comprises sleeve pipe 10, screen casing 20, long tube 30 and short tube 40.Sleeve pipe 10 comprises sleeve pipe vertical section 11, sleeve pipe changeover portion 12 and sleeve pipe horizontal segment 13, and the upper end of sleeve pipe vertical section 11 connects the well head of producing well, and sleeve pipe vertical section 11, sleeve pipe changeover portion 12 are connected successively with sleeve pipe horizontal segment 13.One end of screen casing 20 is connected in sleeve pipe horizontal segment 13, and screen casing 20 extends in the horizontal direction.Long tube 30 and short tube 40, parallel is arranged in sleeve pipe 10 and screen casing 20, and short tube 40 is arranged on above long tube 30, and the horizontal direction extended distance of long tube 30 is greater than the horizontal direction extended distance of short tube 40, wherein, column apparatus is used for the lifting technology of the oil production method of SAGD dual horizontal well.SAGD dual horizontal well comprises steam injection well and producing well, and column apparatus is arranged in producing well.And down-hole reservoir fluid is lifted to ground by long tube 30 and/or short tube 40.
In the present embodiment, the excessive section of sleeve pipe is sleeve pipe lower curved section.
The technical scheme of application the present embodiment, column apparatus is used for the lifting technology of the oil production method of SAGD dual horizontal well.In lifting technology, only the bottom pressure in producing well need be made to be greater than downhole fluid and be lifted to the exploitation resistance overcome needed for ground, reservoir fluid just can be made to be lifted to ground by the long tube 30 of column apparatus and/or short tube 40.Above-mentioned lifting technology does not need to change pumping unit in producing well, and affected by environment little, and technique is simple.Therefore the technical scheme of the present embodiment effectively solves the lifting technology operating mode complexity of SAGD shallow-layer oil exploitation in prior art, the problem that equipment use is limited.
As shown in Figure 1, in the technical scheme of the present embodiment, be provided with screen pipe hanger 131 in sleeve pipe horizontal segment 13, screen casing 20 is connected on sleeve pipe 10 by screen pipe hanger 131.It is tightr that screen pipe hanger 131 can make screen casing 20 be connected with sleeve pipe 10, prevents screen casing 20 from damaging at work, increase equipment life.
As shown in Figure 1, in the technical scheme of the present embodiment, the end of the extension in the horizontal direction of long tube 30 and short tube 40 is provided with guide shoe 50.Guide shoe 50 plays guide effect in long tube 30 and short tube 40 installation process, and what long tube 30 and short tube 40 were more prone to is lowered in producing well, and prevents long tube 30 and short tube 40 to be worn in installation process medial end portions.Flow into long tube 30 or short tube 40 for the ease of downhole fluid, the end opens of guide shoe 50 has through hole.
As shown in Figure 1, in the technical scheme of the present embodiment, because the space in screen casing 20 is comparatively narrow, long tube 30 comprises the first long tube 31 and the second long tube 32.Concrete: the first long tube 31 extends in sleeve pipe changeover portion 12 from the well head of producing well, the free end that first long tube 31 is positioned at sleeve pipe changeover portion 12 is connected with one end of the second long tube 32, second long tube 32 extends in screen casing 20, the diameter of the first long tube 31 is greater than the diameter of the second long tube 32, is connected between the first long tube 31 and the second long tube 32 by cross-over sub device 60.Certainly, connected mode between first long tube 31 and the second long tube 32 is not limited to use cross-over sub device 60 to connect, adopt other connected mode, such as, arrange cone section between the first long tube 31 and the second long tube 32, concrete connected mode needs to determine according to real work.
As shown in Figure 1, in the technical scheme of the present embodiment, column apparatus also comprises control appliance 70, control appliance 70 is arranged on ground and is connected with well head, long tube 30 and short tube 40 are connected on control appliance 70 respectively by long tube pipe hanger 80 and short tube pipe hanger 90, and control appliance 70 controls opening or cutting out of long tube 30 and short tube 40.
By opening or closing control of control appliance 70 pairs of long tubes 30 and short tube 40, the column apparatus of the present embodiment has three kinds of oil production methods, comprises that long tube 30 recovers the oil, short tube 40 recovers the oil and long tube 30 and short tube 40 recover the oil simultaneously.Particularly, long tube 30 is exploited for the production of the reservoir fluid of the posterior segment of well, and short tube 40 is exploited for the production of the reservoir fluid of leading portion in well.Concrete use which kind of oil production method above-mentioned determines according to the connecting degree of dual horizontal well: in the uniform situation of dual horizontal well connecting degree, uses long tube 30 and short tube 40 to recover the oil simultaneously; If dual horizontal well leading portion connecting degree is good, back segment connecting degree is poor, then adopt long tube 30 to recover the oil; If dual horizontal well back segment connecting degree is good, leading portion connecting degree is poor, then adopt short tube 40 to recover the oil.
As shown in Figure 1, in the technical scheme of the present embodiment, column apparatus also comprises testing tube 100, and testing tube 100 is arranged in long tube 30, and the two ends of testing tube 100 are concordant with the two ends of long tube 30 respectively.Testing tube 100 for measuring the parameters of producing well, such as downhole temperature, pressure detecting etc.Data measured by testing tube 100 can produce the foundation of analysis and parameter regulation and control as SAGD.
In the present embodiment, lifting technology, likely due to the reason such as overhaul of the equipments or equipment fault, needs producing well to stop steam injection, or stops reservoir fluid exploitation.Aforesaid operations may cause the down-hole local temperature of producing well to reduce, and in the process of resuming production, reservoir fluid is difficult to be lifted to ground.At this moment can inject a small amount of steam by long tube or short tube in producing well, play the effect of heating column apparatus, and then restart lifting technology, make reservoir fluid be lifted to ground.
Hereafter the lifting technology carried out the column apparatus of application the present embodiment is specifically described.
As shown in Figure 2, the lifting technology that the column apparatus applying the present embodiment carries out comprises: retain the column apparatus in producing well when proceeding to the production phase from the cyclic preheat stage; Increase the bottom pressure of steam injection well, be lifted to ground to make the downhole fluid in producing well by column apparatus.
When the cyclic preheat stage, steam injection well and the equal steam injection circulation of producing well, and make steam injection well and producing well reach heating power and hydraulic communication.When proceeding to the production phase from the cyclic preheat stage, steam injection well continues to keep steam injection, and producing well well group equipment is constant, and stops steam injection starting to proceed to production.Produce and specifically have three kinds of modes, comprising: long tube is produced separately, short tube is produced separately and long tube and short tube are produced simultaneously.The lifting technology of producing well section is specially and makes downhole fluid be lifted to ground from underground by the first column apparatus in producing well, and then realizes reservoir fluid exploitation.
Certainly, the method improving the bottom pressure of producing well is not limited to the steam injection pressure improving steam injection well.Because steam injection well is communicated with producing well when the production phase, as long as the bottom pressure that therefore can improve steam injection well just can reach the object of the bottom pressure improving producing well, concrete mode of operation can need to determine according to real work.
In above-mentioned lifting technology, the bottom pressure increasing steam injection well comprises the steam injection pressure improving steam injection well, to improve the bottom pressure of producing well.Due to after the cyclic preheat stage, producing well is communicated with steam injection well, and therefore when improving the steam injection pressure of steam injection well, the bottom pressure of producing well there will be pressure linkage and rises.Therefore the steam injection pressure by improving steam injection well just can reach the object of the bottom pressure improving producing well.
In order to the blowing that can realize reservoir fluid is produced.The bottom pressure of producing well must be made to be greater than the exploitation resistance of reservoir fluid, and then to make reservoir fluid be lifted to ground from producing well shaft bottom by column apparatus.Wherein exploit the resistance that resistance overcomes needed for ground for reservoir fluid is lifted to.
Particularly, exploitation resistance pack draws together frictional resistance, the gravity of fluid and the internal pressure of control appliance between reservoir fluid and column apparatus.Wherein, control appliance is connected with the column apparatus in producing well, and controls opening or closing of column apparatus.Therefore under the internal pressure in ground installation also can be passed to producing well by column apparatus, and exploitation resistance is formed.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (7)
1. the column apparatus of a SAGD dual horizontal well, it is characterized in that, described column apparatus is used for the lifting technology of the oil production method of SAGD dual horizontal well, and described SAGD dual horizontal well comprises steam injection well and producing well, described column apparatus is arranged in described producing well, and described column apparatus comprises:
Sleeve pipe (10), comprise the sleeve pipe vertical section (11), sleeve pipe changeover portion (12) and the sleeve pipe horizontal segment (13) that connect successively, the upper end of described sleeve pipe vertical section (11) is connected to the well head of described producing well;
Screen casing (20), one end of described screen casing (20) is connected in described sleeve pipe horizontal segment (13), and described screen casing (20) extends in the horizontal direction;
Long tube (30) and short tube (40), parallel is arranged in described sleeve pipe (10), and described long tube (30) and described short tube (40) all extend in described screen casing, described short tube (40) is arranged on the top of described long tube (30), described long tube (30) protrudes from described short tube (40) in described horizontal direction
Wherein, reservoir fluid is lifted to ground by described long tube (30) and/or described short tube (40).
2. column apparatus according to claim 1, it is characterized in that, be provided with screen pipe hanger (131) in described sleeve pipe horizontal segment (13), described screen casing (20) is connected on described sleeve pipe (10) by described screen pipe hanger (131).
3. column apparatus according to claim 1, it is characterized in that, the end that described long tube (30) and described short tube (40) are positioned at described screen casing (20) is provided with guide shoe (50), and the end opens of described guide shoe (50) has through hole.
4. column apparatus according to claim 1, it is characterized in that, described long tube (30) comprises the first long tube (31) and the second long tube (32) that connect successively, described second long tube (32) is positioned at the below of described first long tube (31), the junction of described first long tube (31) and described second long tube (32) is positioned at described sleeve pipe changeover portion (12), and the diameter of described first long tube (31) is greater than the diameter of described second long tube (32).
5. column apparatus according to claim 4, is characterized in that, is connected between described first long tube (31) and described second long tube (32) by cross-over sub device (60).
6. column apparatus according to claim 1, it is characterized in that, described column apparatus also comprises control appliance (70), described control appliance (70) is arranged on ground and is connected with described well head, described long tube (30) and described short tube (40) are connected on described control appliance (70) respectively by long tube pipe hanger (80) and short tube pipe hanger (90), and described control appliance (70) controls opening or cutting out of described long tube (30) and described short tube (40).
7. column apparatus according to claim 1, it is characterized in that, described column apparatus also comprises testing tube (100), described testing tube (100) is arranged in described long tube (30), and the two ends of described testing tube (100) are concordant with the two ends of described long tube (30) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520128838.9U CN204627573U (en) | 2015-03-05 | 2015-03-05 | The column apparatus of SAGD dual horizontal well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520128838.9U CN204627573U (en) | 2015-03-05 | 2015-03-05 | The column apparatus of SAGD dual horizontal well |
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| Publication Number | Publication Date |
|---|---|
| CN204627573U true CN204627573U (en) | 2015-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520128838.9U Expired - Fee Related CN204627573U (en) | 2015-03-05 | 2015-03-05 | The column apparatus of SAGD dual horizontal well |
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| Country | Link |
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| CN (1) | CN204627573U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107514251A (en) * | 2016-06-17 | 2017-12-26 | 中国石油天然气股份有限公司 | SAGD horizontal well concentric tube steam injection heat-transferring methods |
| CN115110934A (en) * | 2021-03-19 | 2022-09-27 | 中国石油天然气股份有限公司 | Thickened oil injection and production system and horizontal well production process method |
-
2015
- 2015-03-05 CN CN201520128838.9U patent/CN204627573U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107514251A (en) * | 2016-06-17 | 2017-12-26 | 中国石油天然气股份有限公司 | SAGD horizontal well concentric tube steam injection heat-transferring methods |
| CN115110934A (en) * | 2021-03-19 | 2022-09-27 | 中国石油天然气股份有限公司 | Thickened oil injection and production system and horizontal well production process method |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150909 |
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| CF01 | Termination of patent right due to non-payment of annual fee |