CN201705309U - Mechanical water-blocking oil-producing pipe column - Google Patents
Mechanical water-blocking oil-producing pipe column Download PDFInfo
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- CN201705309U CN201705309U CN2010202134830U CN201020213483U CN201705309U CN 201705309 U CN201705309 U CN 201705309U CN 2010202134830 U CN2010202134830 U CN 2010202134830U CN 201020213483 U CN201020213483 U CN 201020213483U CN 201705309 U CN201705309 U CN 201705309U
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Abstract
The utility model relates to a mechanical water-blocking oil-producing pipe column, which is applied to the oil production of oilfield oil wells and is applicable to the oil wells where water is discharged from an upper layer after a sleeve pipe is broken. The lower end of an oil pipe is connected with a releasing joint, the lower end of the releasing joint is connected with a sealing pipe, the lower end of the sealing pipe is connected with a K341 packer, the lower end of the K341 packer is connected with a hydraulic slip, the lower end of the hydraulic slip is connected with a unidirectional valve, the lower end of the unidirectional valve is connected with a screening pipe, and the lower end of the screening pipe is connected with a bottom plug; and the position of the K341 packer is between an oil layer and a water layer. The utility model has the effects that: the utility model realizes the effective isolation of the water layer and the oil layer, ensures the normal production, realizes pump detection without lifting the packer, simultaneously solves the problem of oil layer pollution due to the reversed filling of the water layer and has the advantages of reliable construction, long valid period of water blocking, low cost and rapid production capacity recovery of sleeve-broken wells.
Description
Technical field
The utility model relates to oil recovery technique field, oil field, and particularly a kind of oil well down-hole oil production tubing string is applicable to the oil well card hydromining oil of upper strata water outlet behind the casing damage.
Background technology
At present, along with the prolongation of oil field development time, most of oil fields enter middle high water-cut stage, are subjected to the influence of factors such as geology and engineering, and the oil well of upper strata water outlet increases year by year behind the casing damage, has a strong impact on the normal exploitation in oil field.For the oil well of big section corrosion of this class sleeve pipe water outlet, control measures such as conventional chemical plugging, expansion tube reparation exist input cost big, the unfavorable deficiency of plugging effect.Aspect improvement, mainly rely on machinery card hydromining tubing string.Machinery card hydromining tubing string need trip out packer when each pump detection and workover, water layer might take place pour in down a chimney polluted reservoir, and card hydromining oil period of validity is short, and through repeatedly blocking the water operation, the oil well life-span is shortened in the perforation of aggravation casing corrosion simultaneously.Domestic also the application supported and do not had that brace type is anti-to be poured in down a chimney every the excavating technology tubing string, all exists sealing reliability poor, and the flow chart complexity is salvaged difficulty after the seal failure, easily cause down-hole accident.
The utility model content
The purpose of this utility model is: a kind of machinery card hydromining tubing string is provided, carries out water layer and oil reservoir and effectively isolate, can realize examining pump again and need not to trip out packer, solve the problem that water layer pours in down a chimney polluted reservoir simultaneously.Overcome that present conventional mechanical card hydromining tubing string exists that card hydromining oil period of validity is short, flow chart is complicated, cause the deficiency of water layer polluted reservoir during pump detection and workover.
The technical solution adopted in the utility model is: machinery card hydromining tubing string, mainly by stifled composition of oil pipe, back-off sub, sealed tube, K341 packer, waterpower slips, unidirectional valve, screen casing and the end, it is characterized in that: the lower end at oil pipe connects back-off sub, the lower end of back-off sub connects sealed tube, the sealed tube lower end connects the K341 packer, K341 packer lower end connects the waterpower slips, waterpower slips lower end connects unidirectional valve, unidirectional valve lower end connects screen casing, and it is stifled that the screen casing lower end connects the end; And the position of K341 packer is between oil reservoir and water layer.
The use of machinery card hydromining tubing string: consult Fig. 1.When in sleeve pipe 9, being lowered to machinery card hydromining tubing string, require K341 packer 4 between oil reservoir and water layer perforated interval,, explain that by log guaranteeing to have reliable setting position simultaneously near oil reservoir perforated interval position.Tubing string is behind design attitude, and sleeve valve is opened, and annotates working fluid from oil pipe 1 upper end with a fixed displacement and certain pressure, realizes that the K341 packer sets fully.Do not have overflow with sleeve pipe 9 upper ends and judge whether K341 packer 4 sets.Simultaneously waterpower slips 5 struts and is anchored to the inwall of sleeve pipe 9 in the effect of hydraulic pressure, realizes that tubing string sets.Continue to pressurize then in oil pipe, 3～5 tons of pulling force of well head upper lifting pipe post are given up until back-off sub 2 realization tubing strings, trip out back-off sub 2 above tubing strings at last, are lowered to flow string then, realize the normal production of recovering the oil.
The beneficial effects of the utility model: the utility model machinery card hydromining tubing string, adopt long packing element type expanding K341 packer, reach effective Ka Shui, adopt waterpower slips supporting way simultaneously, the seal failure of having avoided packer to slide and cause has improved the whole packing reliability of tubing string.Adopt sealed tube Butt sealing mode to produce, do not trip out packer during the inspection pump, prolong card hydromining oil period of validity.Adopted unidirectional valve, water layer pours in down a chimney polluted reservoir when preventing to examine pump, and production capacity recovers fast, rate when having improved oil well production after the operation of card water.
Description of drawings
Fig. 1 is the utility model machinery card hydromining tubing string structural representation.
Among the figure, 1. oil pipe, 2. back-off sub, 3. sealed tube, the 4.K341 packer, 5. waterpower slips, 6. unidirectional valve, 7. screen casing, 8. the end stifled, 9. sleeve pipe.
The specific embodiment
Embodiment 1: with a machinery card hydromining tubing string is example, and the utility model is described in further detail.
Consult Fig. 1.Water depth is at 1350～1450 meters; 1700～1760 meters of reservoir depth.The utility model machinery card hydromining tubing string requires in the sleeve pipe 9 between 4 times to 1600～1650 meters of the K341 packers.Machinery card hydromining tubing string was made up of oil pipe 1, back-off sub 2, sealed tube 3, K341 packer 4, waterpower slips 5, unidirectional valve 6, screen casing 7 and the end stifled 8.Lower end at oil pipe 1 connects a back-off sub 2; The lower end of back-off sub 2 connects a sealed tube 3 by oil pipe, sealed tube 3 lower ends connect a K341 packer 4 by oil pipe, K341 packer 4 lower ends connect a waterpower slips 5 by oil pipe, waterpower slips 5 lower ends connect a unidirectional valve 6, unidirectional valve 6 lower ends connect screen casing 7, block up 8 at the bottom of screen casing 7 lower ends connect one; The position of K341 packer 4 is between oil reservoir and water layer, and promptly the position of K341 packer 4 is 1630 meters depths seat envelopes.The parts that use are existing product.
Claims (1)
1. a machinery blocks the hydromining tubing string, mainly by oil pipe (1), back-off sub (2), sealed tube (3), K341 packer (4), waterpower slips (5), unidirectional valve (6), the screen casing (7) and the end,, stifled (8) were formed, it is characterized in that: the lower end at oil pipe (1) connects back-off sub (2), the lower end of back-off sub (2) connects sealed tube (3), sealed tube (3) lower end connects K341 packer (4), K341 packer (4) lower end connects waterpower slips (5), waterpower slips (5) lower end connects unidirectional valve (6), unidirectional valve (6) lower end connects screen casing (7), and screen casing (7) lower end connects the end stifled (8); And the position of K341 packer (4) is between oil reservoir and water layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202134830U CN201705309U (en) | 2010-05-27 | 2010-05-27 | Mechanical water-blocking oil-producing pipe column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202134830U CN201705309U (en) | 2010-05-27 | 2010-05-27 | Mechanical water-blocking oil-producing pipe column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201705309U true CN201705309U (en) | 2011-01-12 |
Family
ID=43442464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202134830U Expired - Lifetime CN201705309U (en) | 2010-05-27 | 2010-05-27 | Mechanical water-blocking oil-producing pipe column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201705309U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107965295A (en) * | 2017-11-01 | 2018-04-27 | 中国石油天然气集团公司 | The continuous involving swab tubing string of casing damaged well and its process |
-
2010
- 2010-05-27 CN CN2010202134830U patent/CN201705309U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107965295A (en) * | 2017-11-01 | 2018-04-27 | 中国石油天然气集团公司 | The continuous involving swab tubing string of casing damaged well and its process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110112 |
|
| CX01 | Expiry of patent term |