CN2811972Y - Sleeve leakage detector - Google Patents
Sleeve leakage detector Download PDFInfo
- Publication number
- CN2811972Y CN2811972Y CN 200520086015 CN200520086015U CN2811972Y CN 2811972 Y CN2811972 Y CN 2811972Y CN 200520086015 CN200520086015 CN 200520086015 CN 200520086015 U CN200520086015 U CN 200520086015U CN 2811972 Y CN2811972 Y CN 2811972Y
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- CN
- China
- Prior art keywords
- packer
- oil
- utility
- normally open
- model
- 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
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- Examining Or Testing Airtightness (AREA)
Abstract
The utility model relates to a leakage inspection device for casing tubes, which is used for repairing oil and water wells in oil fields and belongs to a mechanical product. The utility model is composed of a normally open valve, an upper packer, a level pressure switch and a lower packer, wherein the lower part of the normally open valve is connected with the upper part of the upper packer, the lower part of the upper packer is connected with the upper part of the level pressure switch and the lower part of the level pressure switch is connected with the upper part of the lower packer. The utility model is provided with a normally open valve, so that when a tube column is sent down and extracted out, the pressure of an oil casing tube is balanced, the packers are in an unsealing state and can not be damaged and leakage inspection can be repeatedly carried out to a casing tube for many times. Through mechanical methods, damaged and leaking positions of a casing tube can be found out and reliable reference can be provided for the successful repair of oil and water wells. Besides, the utility model has the advantages of low expense, expense and high accuracy.
Description
One, technical field
The utility model is a kind of verifying attachment of oilfield oil well reparation usefulness, particularly a kind of sleeve pipe leak testing device.Belong to engineering goods.
Two, background technology
Local damage will occur after oil well casing has been grown service time, produce leakage, cause oil, well normally not to use, need repair oil-water well.To oil, well reparation, at first to find the damage leakage points accurately.Generally be to use expensive instrument that oil, well are tested at present, determine the damage leakage points according to the test data analysis.The required expense height of this method, accuracy is low, often causes and repairs the leak stopping error, does not reach the purpose of repairing oil, well, causes heavy economic losses to the oil field.
Three, summary of the invention
The purpose of this utility model provides a kind of anti-sleeve pipe leak testing device at above-mentioned the deficiencies in the prior art exactly, makes it accurately find out casing damage leakage position by mechanical means, and, well oily for successfully repairing provides reliable basis.
The purpose of this utility model is achieved in that it is made up of normally open valve, upper packer, constant pressure switch, lower packet.The normally open valve bottom connects upper packer top, and the upper packer bottom connects constant pressure switch top, and the constant pressure switch bottom connects lower packet top.
The beneficial effects of the utility model are: designed normally open valve in this device, and when playing lower tubular column, the tubing and casing pressure equilibrium, packer is in the deblocking state, and packer can not damage, and can repeat repeatedly sleeve pipe to be tested leakage.Can find out casing damage leakage position by mechanical means,, well oily for successfully repairing provides reliable basis, and expense is low, and be simple to operate, the accuracy height.
Four, description of drawings
Accompanying drawing is the wiring layout of the utility model embodiment.
Below in conjunction with accompanying drawing the utility model embodiment is described.
Among the figure: the 1st, normally open valve, the 2nd, upper packer, the 3rd, constant pressure switch, the 4th, lower packet.Be that the utility model is made up of normally open valve 1, upper packer 2, constant pressure switch 3, lower packet 4.Normally open valve 1 bottom connects upper packer 2 tops, and upper packer 2 bottoms connect constant pressure switch 3 tops, and constant pressure switch 3 bottoms connect lower packet 4 tops.During use, this device is with oil pipe RIH bottom.The valve ball of normally open valve 1 is not landed on the valve port when being lowered to, and normally open valve 1 is in open mode, packer can be not midway the seat envelope.When being lowered to certain position and need testing Lou, in oil pipe, squeeze into highly pressurised liquid, under pressure to sleeve pipe, the valve ball of normally open valve 1 is landed on the valve port, and tubing string is in air-tight state, and the tubing string internal pressure raises, the pressure reduction packer set, airtight oil casing annular space, pressure continue to raise, constant pressure switch 3 is opened, highly pressurised liquid enters in the sleeve pipe, under upper and lower packer effect, if not damage of sleeve pipe, pressure can continue to raise, otherwise then pressure does not raise or pressure decline.After this section casing pressure test is finished, bleed off pressure, the valve ball of normally open valve 1 is appeared on the stage, the oil pipe internal and external pressure balance, and the packer deblocking is carried oil pipe on again, makes this device be in another position of sleeve pipe, suppresses in oil pipe again, can test leakage another section sleeve pipe again.Repeat aforesaid operations, just can will all overlap sand washing pipe.
Claims (1)
1, a kind of sleeve pipe leak testing device, form by normally open valve (1), upper packer (2), constant pressure switch (3), lower packet (4), it is characterized in that: normally open valve (1) bottom connects upper packer (2) top, upper packer (2) bottom connects constant pressure switch (3) top, and constant pressure switch (3) bottom connects lower packet (4) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520086015 CN2811972Y (en) | 2005-08-06 | 2005-08-06 | Sleeve leakage detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520086015 CN2811972Y (en) | 2005-08-06 | 2005-08-06 | Sleeve leakage detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2811972Y true CN2811972Y (en) | 2006-08-30 |
Family
ID=36938362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520086015 Expired - Fee Related CN2811972Y (en) | 2005-08-06 | 2005-08-06 | Sleeve leakage detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2811972Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105319020A (en) * | 2015-10-16 | 2016-02-10 | 西南石油大学 | Jacket-type oil casing air tightness detection device and detection method |
-
2005
- 2005-08-06 CN CN 200520086015 patent/CN2811972Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105319020A (en) * | 2015-10-16 | 2016-02-10 | 西南石油大学 | Jacket-type oil casing air tightness detection device and detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060830 Termination date: 20100806 |