CN2562179Y - Magnetic controller for testing pressure and releasing pressure - Google Patents
Magnetic controller for testing pressure and releasing pressure Download PDFInfo
- Publication number
- CN2562179Y CN2562179Y CN 02267562 CN02267562U CN2562179Y CN 2562179 Y CN2562179 Y CN 2562179Y CN 02267562 CN02267562 CN 02267562 CN 02267562 U CN02267562 U CN 02267562U CN 2562179 Y CN2562179 Y CN 2562179Y
- Authority
- CN
- China
- Prior art keywords
- ball
- cover
- oil pipe
- ball cover
- steel ball
- 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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- Earth Drilling (AREA)
Abstract
The utility model relates to a magnet type pressure test and pressure relief controller used for the downhole operation in the oil field, consisting of a ball base, a steel ball, an oil pipe and an oil pipe collar connected with the oil pipe and the ball base. The utility model is characterized in that a column type ball cover which can be injected into is provided on the ball base. The internal diameter of the ball cover has the big upper part and the small lower part. A plurality of through grooves are provided on the periphery of the lower end part of the ball cover. A column type magnetic iron is embedded in the upper part of the through grooves, which facilitates the ball cover to cover the steel ball when the ball cover falls. The magnetic iron absorbs the steel ball.
Description
One, technical field
The utility model relates to the used magnetic-type pressure testing pressure release controller of a kind of oilfield downhole operation.
Two, background technology
In the oil-water well job execution, usually need tubing string is carried out pressure testing, purpose is to check oil pipe, drilling rod sealing property, guarantees oil pipe, drilling rod quality, satisfies various high-voltage construction needs.The general process of pressure testing construction is: at first connect a ball seat at the tubing string afterbody, a corresponding steel ball is dropped in the back of going into the well in tubing string, and steel ball drops on the ball seat, and tubing string is added certain hydraulic pressure, observation tube column sealing situation.During lift pipe string, because the sealing function of ball and ball seat, the liquid in the tubing string can't flow out, and the liquid in the well is taken to ground by tubing string, when oil pipe or drilling rod are dismantled by velamen, and the liquid splash everywhere in the tubing string.Bring three kinds of harm to construction: the liquid contamination environment of 1, taking out of; 2, the liquid in the well is taken out of, liquid level descends in the well, fluid column pressure descends, and when fluid column pressure drops to when being lower than reservoir pressure, gas blowout accident can take place; 3, the tubing string liquid well head splash everywhere of taking out of has worsened workman's operating environment, has slowed down operating speed.Therefore, there is big drawback in present pressure testing mode.
Three, summary of the invention
The purpose of this utility model is the defective that overcomes above-mentioned oil-water well job execution technology, has designed a kind of magnetic-type pressure testing pressure release controller.
Technical solutions of the utility model are to realize in the following manner:
The utility model is made up of the tubing joint of ball seat, steel ball, oil pipe, connection oil pipe and ball seat, it is characterized in that on ball seat, being provided with the ball cover that drops into of a column type, the internal diameter of ball cover is up-small and down-big, on the circumference of the big bottom of internal diameter, be provided with a plurality of connectivity slots, be inlaid with column type magnet on the top of connectivity slot, fix with screw between magnet and the ball cover.The external diameter of ball cover is less than the internal diameter of oil pipe, between leave the annular space of liquid flow, ball cover bottom internal diameter leaves when enough gaps fall ball cover and is easy to cover steel ball greater than the diameter of steel ball, magnet picks up steel ball.
The utility model compared with prior art, its significant advantage is: promptly can pressure testing again can pressure release.There is not when leakage, the beginning lift pipe string when tubing string having been tried press.Dropped into ball cover before lift pipe string earlier, when ball cover was fallen on the ball seat, magnet picked up steel ball, and the pressure of tubing string is applied to ball seat with well-sinking the inside.When lift pipe string, well control fluid just can not taken ground out of, and can not splash on the body of operating worker influences operating speed, can not injure the health of operating worker yet, does not pollute the environment yet, and has avoided discharging the gas blowout accident that causes because of well control fluid yet.
Four, description of drawings
Fig. 1 is the structure scheme of installation of magnetic-type pressure testing pressure release controller.
Five, embodiment
For further disclosing the technical solution of the utility model,, be described in detail by embodiment below in conjunction with Figure of description:
The utility model is made up of the tubing joint 4 of ball seat 1, steel ball 2, oil pipe 7, connection ball seat and oil pipe, it is characterized in that being provided with above the ball seat ball cover that drops into 6 of a column type, the internal diameter of ball cover is up-small and down-big, on the circumference of bottom, be provided with a plurality of connectivity slots, be inlaid with column type magnet 3 on the top of connectivity slot, fixing between magnet and the ball cover with screw 5.The external diameter of ball cover is less than the internal diameter of oil pipe, between leave the annular space of liquid flow, ball cover bottom internal diameter leaves and is easy to cover steel ball when enough gaps fall ball cover greater than the diameter of steel ball.
During pressure testing ball seat is connected on the tubing string afterbody, tubing string drops into supporting steel ball down to projected depth in oil pipe, with cementing truck tubing string is carried out pressure testing, detect tubing string and whether seal, after pressure testing finishes, ball cover is dropped in tubing string, and ball cover is fallen on the ball seat, and magnet picks up steel ball.Pressure testing liquid is from the annular space between oil pipe and the ball cover, and connectivity slot and ball seat by the ball cover lower end flow in the pit shaft, finish pressure release work.Like this when lift pipe string, well control fluid just can not take the ground pollution environment to, influence job execution and influence the physical and mental health of operating worker.Also avoided taking the gas blowout accident that causes out of because of well control fluid.
Claims (1)
1, the magnetic-type pressure testing pressure release controller that oilfield downhole operation is used, by ball seat, steel ball, oil pipe, the tubing joint that connects oil pipe and ball seat is formed, it is characterized in that on ball seat, being provided with the ball cover that drops into of a column type, the internal diameter of ball cover is up-small and down-big, on the circumference of bottom, be provided with a plurality of connectivity slots, be inlaid with column type magnet on the top of connectivity slot, fix with screw between magnet and the ball cover, the external diameter of ball cover is less than the internal diameter of oil pipe, between leave the annular space of liquid flow, ball cover bottom internal diameter is greater than the diameter of steel ball, be easy to cover steel ball when ball cover is fallen, magnet picks up steel ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02267562 CN2562179Y (en) | 2002-06-06 | 2002-06-06 | Magnetic controller for testing pressure and releasing pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02267562 CN2562179Y (en) | 2002-06-06 | 2002-06-06 | Magnetic controller for testing pressure and releasing pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2562179Y true CN2562179Y (en) | 2003-07-23 |
Family
ID=33733137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02267562 Expired - Fee Related CN2562179Y (en) | 2002-06-06 | 2002-06-06 | Magnetic controller for testing pressure and releasing pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2562179Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102787826A (en) * | 2011-05-15 | 2012-11-21 | 李越 | Magnetic float collar float shoe |
| CN106641552A (en) * | 2016-11-28 | 2017-05-10 | 无锡金顶石油管材配件制造有限公司 | Pressure reduction pipe hoop for petroleum pipes |
-
2002
- 2002-06-06 CN CN 02267562 patent/CN2562179Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102787826A (en) * | 2011-05-15 | 2012-11-21 | 李越 | Magnetic float collar float shoe |
| CN106641552A (en) * | 2016-11-28 | 2017-05-10 | 无锡金顶石油管材配件制造有限公司 | Pressure reduction pipe hoop for petroleum pipes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |