CN202483514U - Tubular column for positioning and hot-washing oil well - Google Patents
Tubular column for positioning and hot-washing oil well Download PDFInfo
- Publication number
- CN202483514U CN202483514U CN2011205288093U CN201120528809U CN202483514U CN 202483514 U CN202483514 U CN 202483514U CN 2011205288093 U CN2011205288093 U CN 2011205288093U CN 201120528809 U CN201120528809 U CN 201120528809U CN 202483514 U CN202483514 U CN 202483514U
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- oil
- oil pipe
- packer
- hot
- washing device
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Abstract
The utility model provides a tubular column for positioning and hot-washing an oil well, which is used for the positioning and hot-washing of producing wells in oil field. The upper end of an oil pipe is connected with a wellhead device, the lower end of the oil pipe is connected with an oil-well pump, and the lower end of the oil-well pump is connected with a pump lower oil pipe; the tubular column is characterized in that the lower end of the pump lower oil pipe is connected with a positioning and hot-washing device, the lower end of the positioning and hot-washing device is connected with an oil pipe at the lower part of a hot-washing device, the lower end of the oil pipe at the lower part of the hot-washing device lower is connected with a packer, a rubber cylinder of the packer is sealed with the inner wall of a sleeve, the lower end of the packer is connected with a packer lower oil pipe, the oil pipe at the lower end of the packer is connected with a screen pipe, and the lower end of the screen pipe is connected with a screwed plug. The tubular column has the beneficial effects that as the flushing fluid does not enter the stratum during the hot-washing and paraffin removing process of the oil well, the oil well flushing fluid restoration stage is shortened by more than 80%, and the power consumption of a pumping unit is reduced by more than 10%.
Description
Technical field
The utility model relates to oil recovery technique field, oil field, the tubing string of particularly a kind of oil well down-hole localization hot washing, be a kind of when oil well heat is washed flushing fluid do not get into the tubing string of oil reservoir.
Background technology
For the crude oil that is dissolved with a certain amount of paraffin, in recovery process, along with the reduction of temperature, pressure and separating out of gas, the paraffin of dissolving is just separated out, is grown up with crystalline solid and assembles and be deposited on the solid phase surface such as tube wall, so-called wax deposition phenomenon promptly occurs.Hot-washing wax remover remains the measure commonly used of oil field daily management.But flushing fluid was in a large number to formation leakage when the low oil reservoir heat of energy was washed, can not the row of returning, cause heat to be washed not reaching the purpose of wax removal.
When people such as Zhang Xiangfen were published in the pumpingh well heat of economic research guide on 2011 the 9th phases and wash innovation and effect one literary composition of mode and propose the pumpingh well hot-washing wax remover and safeguard, well water was high behind the well-flushing, needs several days drainage period, and influences oil production.Adopt " the superconduction car cooperates the medicine adding vehicle well-flushing ", the discharge capacity that makes well-flushing water by 15 original sides/hour be reduced to, 2 sides/hour, the well-flushing water temperature rises to 90 ℃ by 85 ℃, has guaranteed change wax effect, also drops to the influence to oil well minimum.This hot washing method is washed still inapplicable to the heat of leakage oil well.
The utility model content
The purpose of the utility model is: a kind of tubing string of oil well localization hot washing is provided, relies on the localization hot washing device of installing on the tubing string, realize hot cleanout and paraffin removal of oil well, heat is washed the convalescence shortening of back oil well more than 80 percentage points.
The technical scheme that the utility model adopts is: the tubing string of oil well localization hot washing comprises oil pipe, oil well pump, localization hot washing device, packer, screen casing and plug.The oil pipe upper end connects wellhead assembly; Lower end at oil pipe connects oil well pump, and the lower end of oil well pump connects pump bottom oil pipe, it is characterized in that: the lower end of oil pipe connects localization hot washing device in the pump bottom; Connect hot washing device bottom oil pipe in the lower end of localization hot washing device; The lower end of hot washing device bottom oil pipe connects packer, and the packing element of packer and internal surface of sleeve pipe sealing connect packer bottom oil pipe in the lower end of packer; The lower end of packer bottom oil pipe connects screen casing, and the lower end of screen casing connects plug.
Described oil pipe is that external diameter is the 73mm heavy wall tubing; The model of oil well pump is the tubing pump of 38-56; The packer external diameter is 114mm, and the model of localization hot washing device is: the patent No. is the Chinese patent publication number: 201344019, and the localization hot washing device model that provides is the DRQI type.The external diameter of screen casing is 73mm, and the external diameter of plug is 62mm.
The beneficial effect of the utility model: the tubing string of the utility model oil well localization hot washing, when carrying out hot cleanout and paraffin removal of oil well, flushing fluid does not get into the stratum, and oil well convalescence shortening is more than 80%, and the oil pumper power consumption descends more than 10%.
Description of drawings
Fig. 1 is the tubular column structure generalized section of the utility model oil well localization hot washing.
Among the figure, 1-oil pipe, 2-oil well pump, 3-pump bottom oil pipe, 4-localization hot washing device, 5-hot washing device bottom oil pipe, 6-packer, 7-packer bottom oil pipe, 8-screen casing, 9-plug, 10-sleeve pipe.
The specific embodiment
Embodiment 1: the tubing string with an oil well localization hot washing is an example, and the utility model is done further explain.
Consult Fig. 1.The utility model is tried out the well in X57-1, the crude oil content of wax 24.3% of X57-1 well, 35 ℃ at freezing point.The pipe string combination of former employing: be from bottom to top: external diameter is dark 1843.57m under the plug of 62mm; Dark 1824.05m under the screen casing of external diameter 73mm; Dark 1805.74m under the oil well pump; External diameter is dark 1800m under the oil pipe of 73mm.The daily wax removal of oil well safeguards and relies on heat to wash mode, but heat flushing fluid row of returning fully when washing causes heat to wash weak effect.
The X57-1 well is used the tubing string of oil well localization hot washing instead.Structure is: external diameter is that oil pipe 1 upper end of 73mm thickening connects wellhead assembly, and the oil pipe 1 lower end degree of depth is 1850m.Lower end at oil pipe 1 connects oil well pump 2, and the model of oil well pump 2 is the tubing pump of 38-56, and the tubing pump lower end degree of depth is 1860m.The lower end of oil well pump 2 connects pump bottom oil pipe 3, and the oil pipe 3 lower end degree of depth in pump bottom are 1880m.The lower end of oil pipe 3 connects localization hot washing device 4 in the pump bottom, and the model of localization hot washing device 4 is the DRQI type, and the localization hot washing device 4 lower end degree of depth are 1880.65m.Connect hot washing device bottom oil pipe 5 in the lower end of localization hot washing device 4, it is the packer 6 of 114mm that the lower end of hot washing device bottom oil pipe 5 connects external diameter, and the packer 6 lower end degree of depth are 1891.65m.The packing element of packer 6 and sleeve pipe 10 inner wall sealings.Connect packer bottom oil pipe 7 in the lower end of packer 6, it is the screen casing 8 of 73mm that the lower end of packer bottom oil pipe 7 connects external diameter, and the external diameter of screen casing 8 is 73mm, and the screen casing lower end degree of depth is 1920.65m.The lower end of screen casing 8 connects plug 9, and the external diameter of plug 9 is 62mm, and the plug 9 lower end degree of depth are 1920.85m.
Use the tubing string of localization hot washing to recover the oil, hot cleanout and paraffin removal of oil well is effective, oil well convalescence shortening 82%, and this oil well production power consumption descended 15% after heat was washed.
Claims (2)
1. the tubing string of an oil well localization hot washing comprises oil pipe (1), oil well pump (2), localization hot washing device (4), packer (6), screen casing (8) and plug (9); Oil pipe (1) upper end connects wellhead assembly; Lower end at oil pipe (1) connects oil well pump (2), and the lower end of oil well pump (2) connects pump bottom oil pipe (3), it is characterized in that: the lower end of oil pipe (3) connects localization hot washing device (4) in the pump bottom; Lower end at localization hot washing device (4) connects hot washing device bottom oil pipe (5); The lower end of hot washing device bottom oil pipe (5) connects packer (6), and the packing element of packer (6) and sleeve pipe (10) inner wall sealing connect packer bottom oil pipe (7) in the lower end of packer (6); The lower end of packer bottom oil pipe (7) connects screen casing (8), and the lower end of screen casing (8) connects plug (9).
2. the tubing string of oil well localization hot washing according to claim 1; It is characterized in that: described oil pipe (1) is that external diameter is the 73mm heavy wall tubing; The model of oil well pump (2) is the tubing pump of 38-56, and packer (6) external diameter is 114mm, and the model of localization hot washing device (4) is the DRQI type; The external diameter of screen casing (8) is 73mm, and the external diameter of plug (9) is 62mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205288093U CN202483514U (en) | 2011-12-16 | 2011-12-16 | Tubular column for positioning and hot-washing oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205288093U CN202483514U (en) | 2011-12-16 | 2011-12-16 | Tubular column for positioning and hot-washing oil well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202483514U true CN202483514U (en) | 2012-10-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205288093U Expired - Fee Related CN202483514U (en) | 2011-12-16 | 2011-12-16 | Tubular column for positioning and hot-washing oil well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202483514U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104213873A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气股份有限公司 | Method for determining temperature of well washing through oil well hollow rod |
-
2011
- 2011-12-16 CN CN2011205288093U patent/CN202483514U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104213873A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气股份有限公司 | Method for determining temperature of well washing through oil well hollow rod |
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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: 20121010 Termination date: 20201216 |