CN202788787U - Nitrogen foam gel profile control process pipe column - Google Patents
Nitrogen foam gel profile control process pipe column Download PDFInfo
- Publication number
- CN202788787U CN202788787U CN 201220345062 CN201220345062U CN202788787U CN 202788787 U CN202788787 U CN 202788787U CN 201220345062 CN201220345062 CN 201220345062 CN 201220345062 U CN201220345062 U CN 201220345062U CN 202788787 U CN202788787 U CN 202788787U
- Authority
- CN
- China
- Prior art keywords
- foam
- urceolus
- process pipe
- gel profile
- pipe string
- 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.)
- Expired - Fee Related
Links
- 239000006260 foam Substances 0.000 title claims abstract description 69
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 229910052757 nitrogen Inorganic materials 0.000 title claims description 27
- 238000000034 method Methods 0.000 title claims description 23
- 230000008569 process Effects 0.000 title claims description 20
- 239000007921 spray Substances 0.000 claims description 16
- 210000000867 larynx Anatomy 0.000 claims description 14
- 238000005187 foaming Methods 0.000 abstract description 13
- 239000012530 fluid Substances 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 239000003129 oil well Substances 0.000 abstract description 4
- 229910001873 dinitrogen Inorganic materials 0.000 abstract 3
- 239000007788 liquid Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010793 Steam injection (oil industry) Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
Images
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model discloses a nitrogen gas foam gel profile control technology tubular column, it includes: the underground foam generator is connected to the lower end of an underground oil pipe and is provided with an outer cylinder, the inner cylinder wall of the upper end of the outer cylinder is connected with a nozzle, the inner cylinder wall of the lower end of the outer cylinder is connected with a throat-expansion integrated pipe, and the middle part of the outer cylinder is provided with a plurality of through holes; a packer connected to a lower end of the outer cylinder; a nib attached to a lower end of the packer. The utility model discloses a nitrogen gas foam gel profile control technology tubular column can make and pour into near the mixed foaming of oil reservoir section in the pit into to the nitrogen gas in shaft bottom and gel base fluid, and the foam flow after the foaming can directly get into the oil reservoir and carry out the shutoff, has avoided the foam to flow long distance and has caused the foam decay, has effectively improved the profile control effect of oil well.
Description
Technical field
The utility model is relevant for a kind of oil extraction process tubular column, especially relevant for a kind of a kind of nitrogen foam gel profile-controlling process pipe string that is applied to the oil-water well oil layer profile control.
Background technology
At present, the oil-water well water plugging and profile controlling is an important process technology of exploitation heterogeneous reservoir, and China has just begun the water plugging and profiling technology research in early stage from latter stage 50 year last century, through the development of decades, has formed the series technique of comparative maturity.Wherein, the frothy gel profile control of gas-liquid two-phase is a profile control technique that is applied to thick oil thermal extraction, principle is that the frothy gel system is injected oil reservoir, be cross-linked to form high-intensity frothy gel, shutoff vapour is altered passage, to reduce permeability and the degree of porosity of oil reservoir high permeability zone, has adjusted the suction vapour difference of the high less permeable layer interband in stratum, change the trend of steam injection, reach and alleviate the purpose that vapour was altered, eliminated interference between well, expansion steam injection swept volume, improves the cycle oil production.
Existing nitrogen foam gel profile-controlling tubing string technique, the frothy gel that injects to the shaft bottom is to reinject after mix on ground to the shaft bottom in advance, namely pass through foam maker, for example stirring type foam maker, turbine type foam maker, spiral foam maker, hole formula foam maker, concentric pipe type foam generator and baffle-type foam maker etc. are with the gas that injects and the liquid shaft bottom of reinjecting behind the mixed foaming of ground.This foam maker has two inlets usually, an inlet injecting gas, and another inlet injects the base fluid for preparing, and gas and the liquid of injection mix in foam maker, and mixed frothy gel is injected in the well through the outlet of foam maker.This foam maker, foaming efficient height and foam are even, and its effect to the oil reservoir profile control of down-hole is better.
Above-mentioned profile control technology at the ground mixed foaming, although have simple in structure, easy to operate advantage, but frothy gel stream need to could arrive the oil reservoir in shaft bottom through hundreds of even the long oil pipe of upper km from well head, and the conveying of long distance can cause foam lost, especially vertical direction flows, gas and liquid are subject to the impact of gravity simultaneously, because the gas-liquid density contrast is larger, produce slippage effect, thereby reduce foaming efficient, affect the effect of profile control.
Therefore, be necessary to provide a kind of novel profile control technology tubing string, overcome defects.
The utility model content
The purpose of this utility model provides a kind of nitrogen foam gel profile-controlling process pipe string, can make the nitrogen and near the gel base fluid mixed foaming downhole oil interval that are injected into the shaft bottom, foam stream after the foaming can directly enter oil reservoir and carry out shutoff, avoided the long distance of foam stream to flow and caused foam attenuation, Effective Raise the profile control effect of oil well.
Above-mentioned purpose of the present utility model can adopt following technical proposal to realize:
The utility model provides a kind of nitrogen foam gel profile-controlling process pipe string, and described nitrogen foam gel profile-controlling process pipe string comprises:
The down-hole foam maker, it is connected to the lower end of down-hole oil tube, and described down-hole foam maker has urceolus, is connected with nozzle on the upper end inner tube wall of described urceolus, be connected with larynx on the lower end inner tube wall of described urceolus and expand integral tube, the middle part of described urceolus offers a plurality of through holes;
Packer, it is connected to the lower end of described urceolus;
Nib, it is connected to the lower end of described packer.
In preferred embodiment, described nozzle is connected on the upper end inner tube wall of described urceolus by lock dog.
In preferred embodiment, described nozzle has spray orifice, and described spray orifice is inversed-cone shape.
In preferred embodiment, the lower ending opening diameter of described spray orifice is 5～8mm, and the upper end open diameter of described spray orifice is 20～30mm.
In preferred embodiment, described larynx expands integral tube and has hybrid chamber, and described hybrid chamber comprises shell of column hybrid chamber and the cone section hybrid chamber that is connected, and described shell of column hybrid chamber is relative with described spray orifice.
In preferred embodiment, the roughness of the inner tube wall of described urceolus is 0.4～0.8 μ m.
In preferred embodiment, be respectively equipped with a plurality of O RunddichtringOs between the inner tube wall of described nozzle and described urceolus and between the inner tube wall of described larynx expansion integral tube and described urceolus.
Characteristics and the advantage of nitrogen foam gel profile-controlling process pipe string of the present utility model are: by the down-hole foam maker, can realize that nitrogen and gel base fluid carry out mixed foaming near the oil reservoir of down-hole, foam stream after the foaming can directly enter oil reservoir and carry out shutoff, avoided the long distance of foam stream to flow and caused foam attenuation, Effective Raise the profile control effect of oil well.
Description of drawings
In order to be illustrated more clearly in the technical scheme among the utility model embodiment, the accompanying drawing of required use was done to introduce simply during the below will describe embodiment, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of nitrogen foam gel profile-controlling process pipe string of the present utility model.
Fig. 2 is that the A-A of Fig. 1 is to sectional drawing.
The specific embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, the utility model provides a kind of nitrogen foam gel profile-controlling process pipe string, and it comprises down-hole foam maker 1, packer 2 and nib 3.Wherein: down-hole foam maker 1 is connected to the lower end of down-hole oil tube 4, described down-hole foam maker 1 has urceolus 11, be connected with nozzle 12 on the upper end inner tube wall of described urceolus 11, be connected with larynx on the lower end inner tube wall of described urceolus 11 and expand integral tube 13, the middle part of described urceolus 11 offers a plurality of through holes 14; Packer 2 is connected to the lower end of described urceolus 11; Nib 3 is connected to the lower end of described packer 2.
Specifically, the urceolus 11 of foam maker 1 is cylinder barrel shaped substantially, and it is connected to the lower end of oil pipe 4, and in the utility model, the roughness of urceolus 11 inner tube walls is 0.4～0.8 μ m; The a plurality of through holes 14 that are opened in urceolus 11 middle parts are positioned at around the lower ending opening of nozzle 12 just, and in the utility model, as shown in Figure 2, the middle part of urceolus 11 offers 14, four through holes 14 of four through holes and evenly distributes along the barrel of urceolus 11.
Have external thread section on the periphery wall of nozzle 12, have internal thread segment on the upper end inner tube wall of urceolus 11, nozzle 12 is threaded in by its external thread section on the internal thread segment of urceolus 11 upper end inner tube walls and is threaded on the urceolus 11; Further, in the utility model, nozzle 12 is fixedly connected on the inner tube wall of urceolus 11 upper ends by a lock dog 15, and lock dog 15 can make nozzle 12 more firm being connected on the urceolus 11; Nozzle 12 has spray orifice 121, described spray orifice 121 is inversed-cone shape, gel base fluid flow velocity after nozzle 12 ejections of the nozzle 12 of flowing through is increased, in one embodiment, the lower ending opening diameter of described spray orifice 121 is 5～8mm, and the upper end open diameter of described spray orifice 121 is 20～30mm.
Larynx expands on the periphery wall of integral tube 13 and has external thread section, has internal thread segment on the lower end inner tube wall of urceolus 11, and larynx expands integral tube 13 and is threaded in by its external thread section on the internal thread segment of urceolus 11 lower end inner tube walls and is threaded on the urceolus 11; Larynx expands integral tube 13 and has hybrid chamber 131, in the present embodiment, described hybrid chamber 131 comprises shell of column hybrid chamber 132 and the cone section hybrid chamber 133 that is connected, described shell of column hybrid chamber 132 is relative with described spray orifice 121, shell of column hybrid chamber 132 is identical along the axial direction diameter of tubing string, it is used for the mixed foaming of nitrogen and gel base fluid, cone section hybrid chamber 133 is cone shape substantially, its upper end diameter is less than its lower end diameter, and cone section hybrid chamber 133 can make the foam stream low speed ejection down-hole foam maker 1 that mixes.
When carrying out the profile control operation, at first, be connected to down-hole foam maker 1, packer 2 and nib 3 in turn on the oil pipe 4 formation nitrogen foam gel profile-controlling process pipe string of the present utility model, assemble complete profile control technology tubing string with in the oil pipe 4 in the lump lower going-into-well setting of casing, in the utility model, the well section degree of depth of according to actual needs shutoff of the length scale of oil pipe 4 is set, as long as guarantee that down-hole foam maker 1 is near the oil reservoir that needs shutoff; Afterwards, set packer 2, with Seal Oil cover annular space 5, at this moment, first nitrogen injection in the oil jacket annular space 5, after pressure reaches certain value, again to oil pipe 4 interior injection gel base fluids, the nozzle 12 rear formation jet phenomenons of gel base fluid by having inversed-cone shape spray orifice 121, gel base fluid flow velocity is accelerated, oil pipe 4 internal pressures reduce rapidly, and the nitrogen in the oil jacket annular space 5 is inhaled in the down-hole foam maker 1 from urceolus 11 through holes 14 of down-hole foam maker 1; At this moment, nitrogen and gel base fluid expand integral tube 13 interior abundant mixing foam generated streams at the larynx of foam maker 1, this foam stream flows into cone section hybrid chamber 133 through the shell of column hybrid chamber 132 that larynx expands integral tube 13, in the cone section hybrid chamber 133 of opening flaring, the foam stream flow velocity reduces gradually, and oil pipe 4 internal pressures increase, and foam stream is injected into the shaft bottom oil reservoir, with the macropore plugging High Permeability Interval, finish the frothy gel profile control.
Nitrogen foam gel profile-controlling process pipe string of the present utility model, by down-hole foam maker 1, can realize that nitrogen and gel base fluid carry out mixed foaming near the oil reservoir of down-hole, foam stream after the foaming can directly enter oil reservoir and carry out shutoff, avoided the long distance of foam stream to flow and caused foam attenuation, Effective Raise the profile control effect of oil well.
According to an embodiment of the present utility model, be respectively equipped with a plurality of O RunddichtringOs 16 between the inner tube wall of described nozzle 12 and described urceolus 11 and between the inner tube wall of described larynx expansion integral tube 13 and described urceolus 11.Those O RunddichtringOs 16 play the purpose of sealed outer cylinder 11 and nozzle 12 and urceolus 11 and larynx expansion integral tube 13.
The above only is several embodiment of the present utility model, and those skilled in the art can carry out various changes or modification to the utility model embodiment according to the disclosed content of application documents and not break away from spirit and scope of the present utility model.
Claims (7)
1. a nitrogen foam gel profile-controlling process pipe string is characterized in that, described nitrogen foam gel profile-controlling process pipe string comprises:
The down-hole foam maker, it is connected to the lower end of down-hole oil tube, and described down-hole foam maker has urceolus, is connected with nozzle on the upper end inner tube wall of described urceolus, be connected with larynx on the lower end inner tube wall of described urceolus and expand integral tube, the middle part of described urceolus offers a plurality of through holes;
Packer, it is connected to the lower end of described urceolus;
Nib, it is connected to the lower end of described packer.
2. nitrogen foam gel profile-controlling process pipe string as claimed in claim 1 is characterized in that, described nozzle is connected on the upper end inner tube wall of described urceolus by lock dog.
3. nitrogen foam gel profile-controlling process pipe string as claimed in claim 1 is characterized in that described nozzle has spray orifice, and described spray orifice is inversed-cone shape.
4. nitrogen foam gel profile-controlling process pipe string as claimed in claim 3 is characterized in that, the lower ending opening diameter of described spray orifice is 5～8mm, and the upper end open diameter of described spray orifice is 20～30mm.
5. nitrogen foam gel profile-controlling process pipe string as claimed in claim 3 is characterized in that, described larynx expands integral tube and has hybrid chamber, and described hybrid chamber comprises shell of column hybrid chamber and the cone section hybrid chamber that is connected, and described shell of column hybrid chamber is relative with described spray orifice.
6. nitrogen foam gel profile-controlling process pipe string as claimed in claim 1 is characterized in that, the roughness of the inner tube wall of described urceolus is 0.4～0.8 μ m.
7. nitrogen foam gel profile-controlling process pipe string as claimed in claim 1 is characterized in that, is being respectively equipped with a plurality of O RunddichtringOs between the inner tube wall of described nozzle and described urceolus and between the inner tube wall of described larynx expansion integral tube and described urceolus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220345062 CN202788787U (en) | 2012-07-16 | 2012-07-16 | Nitrogen foam gel profile control process pipe column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220345062 CN202788787U (en) | 2012-07-16 | 2012-07-16 | Nitrogen foam gel profile control process pipe column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202788787U true CN202788787U (en) | 2013-03-13 |
Family
ID=47816063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220345062 Expired - Fee Related CN202788787U (en) | 2012-07-16 | 2012-07-16 | Nitrogen foam gel profile control process pipe column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202788787U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630467A (en) * | 2013-12-03 | 2014-03-12 | 中国石油大学(北京) | Device and method for measuring pitch particle profile control performance parameters |
| CN106837268A (en) * | 2017-02-14 | 2017-06-13 | 四川洁能锐思石油技术有限公司 | Control water gas-injection oil-production integration method for increasing |
| CN107226447A (en) * | 2017-08-08 | 2017-10-03 | 广州市品熠铧烨机械设备有限责任公司 | Negative pressure generator and depression generator |
| CN112855095A (en) * | 2021-02-03 | 2021-05-28 | 中海油能源发展股份有限公司 | Downhole in-situ retrievable online profile control device, tubular column and method |
-
2012
- 2012-07-16 CN CN 201220345062 patent/CN202788787U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630467A (en) * | 2013-12-03 | 2014-03-12 | 中国石油大学(北京) | Device and method for measuring pitch particle profile control performance parameters |
| CN103630467B (en) * | 2013-12-03 | 2015-11-25 | 中国石油大学(北京) | A kind of device and method for measuring pitch particle profile control performance parameter |
| CN106837268A (en) * | 2017-02-14 | 2017-06-13 | 四川洁能锐思石油技术有限公司 | Control water gas-injection oil-production integration method for increasing |
| CN106837268B (en) * | 2017-02-14 | 2019-04-09 | 四川洁能锐思石油技术有限公司 | Control water gas-injection oil-production integration method for increasing |
| CN107226447A (en) * | 2017-08-08 | 2017-10-03 | 广州市品熠铧烨机械设备有限责任公司 | Negative pressure generator and depression generator |
| CN112855095A (en) * | 2021-02-03 | 2021-05-28 | 中海油能源发展股份有限公司 | Downhole in-situ retrievable online profile control device, tubular column and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202788787U (en) | Nitrogen foam gel profile control process pipe column | |
| CN204041022U (en) | A kind of twofold whirl water pumping gas production downhole tool | |
| CN202970550U (en) | Rotational-flow sand washing and deblocking pipe column for horizontal well | |
| CN203285410U (en) | Steam injection process pipe column capable of improving utilization degree of horizontal section of thickened oil horizontal well | |
| CN103993863B (en) | The non-mixed phase air water of low-permeability oil deposit is handed over note fluctuation step-down augmented injection device and method | |
| CN102797437A (en) | Underground atomizer for liquid discharging in gas well | |
| CN203948078U (en) | The non-mixed phase air water of a kind of low-permeability oil deposit is handed over note fluctuation step-down augmented injection device | |
| CN205089245U (en) | Side direction efflux formula detritus bed removing tool | |
| CN102900406A (en) | Pressure-pulse oil well production-increasing device and application method thereof | |
| CN105257256B (en) | Underground gas production tubing string and gas production method | |
| CN102747993B (en) | Liquid foaming agent injection method | |
| CN101377124B (en) | Horizontal bare hole flow guiding slot well and method for mining coal bed gas of sugarcoated haw well | |
| CN209818030U (en) | Spiral drainage jet atomization drainage gas production device | |
| CN205577962U (en) | Long horizontal well double -flow -passage of viscous crude sprays and annotates vapour device | |
| CN202767965U (en) | Layering steam injection uniform steam-distributing tubular column | |
| CN106988693A (en) | Concentric tube double-jet aeration negative pressure sand pumping device and method | |
| CN204877423U (en) | Gasification agent conveyer pipe and underground fuel gasification system thereof | |
| CN114482967A (en) | Underground cavitation jet flow production and injection increasing device and control method thereof | |
| CN204024590U (en) | Injection allocation valve and use the pumping pipe string of this injection allocation valve | |
| CN206144550U (en) | High gas -oil is than oil well gas -liquid separation system | |
| CN108756835A (en) | Baffling type control valve and well system | |
| CN106285523A (en) | Horizontal well negative pressure sand extractor | |
| CN204703804U (en) | Horizontal well negative pressure sand extractor | |
| CN201055825Y (en) | Rotational flow atomizer for liquor drainage and gas production | |
| CN206987754U (en) | Concentric tube double-jet aeration negative pressure sand pumping device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20210716 |