CN203130078U - Safe pull-out indicator - Google Patents
Safe pull-out indicator Download PDFInfo
- Publication number
- CN203130078U CN203130078U CN 201220271042 CN201220271042U CN203130078U CN 203130078 U CN203130078 U CN 203130078U CN 201220271042 CN201220271042 CN 201220271042 CN 201220271042 U CN201220271042 U CN 201220271042U CN 203130078 U CN203130078 U CN 203130078U
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- sensor
- cylindrical test
- alarm
- cable
- steel wire
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Abstract
The utility model provides a safe pull-out indicator composed of a cylindrical testing segment, a sensor and an alarm, wherein the cylindrical testing segment is made of non-permeability material, one end of the cylindrical testing segment is connected with the upper end of a lower catcher, the other end of the cylindrical testing segment is connected with the lower end of an anti-spraying pipe, the sensor is installed on the outer wall of the cylindrical testing segment, and the signal output end of the sensor is connected with the alarm. The safe pull-out indicator can accurately test the distance from the end portion of a steel wire (a cable/ a coiled tubing) to the mouth of a well and gives an alarming signal to operators, the situations that a tool string is pulled to disengage on an upper catcher and fall into the well, and lost-in-hole accidents are probably caused by mechanical/electronic depth measuring device errors and operator errors, and well blowout accidents are caused due to the fact that the end portion of the steel wire (the cable/ the coiled tubing) is pulled out by an anti-spraying box are avoided.
Description
Technical field
The utility model belongs to oil gas field with completion, well logging and workover treatment instrument technical field, is specifically related to a kind of safety and trips out indicator, is applicable to operation and the exploitation in fields such as oil, natural gas, coal bed gas and shale gas.
Background technology
At oil gas well completion, in well logging and the workover treatment process, the dark device of mechanical/electrical meter is all demarcated the degree of depth of going into the well by the length that the metering winch is transferred steel wire (cable or coiled tubing), therefore there is certain degree of depth error in dipping, and along with increasing error, the degree of depth of going into the well further to increase, owing to there is degree of depth error in dipping, cause tripping out operating process and have potential safety hazard, severe patient can cause tool string to be dragged coming off well or steel wire (cable/coiled tubing) to be extracted out in the blowout prevention box, and may cause accidents such as blowout, cause great potential safety hazard, therefore be necessary to improve.
The utility model content
The technical problem that the utility model solves: provide a kind of safety to trip out indicator, survey an artificial situation of steel wire (cable or coiled tubing) in the appointed part lubricator by external sensor, when this position induced signal is stablized, illustrate that the end of steel wire in the process of tripping out (cable/coiled tubing) does not also reach the position that requires apart from well head; Illustrate that when this position induced signal changes steel wire (cable/coiled tubing) end has arrived in the distance of well head requirement, this moment, alarm sent alarm signal to the operator, and the notifying operation person is slowed down, and shut down and shut-in well.
The technical solution adopted in the utility model: safety trips out indicator, described indicator is made of cylindrical test joint, sensor and alarm, described cylindrical test joint is made by non-magnet_conductible material, and cylindrical test saves an end and is connected with following catcher upper end, the other end is connected with the lubricator lower end, described sensor is installed on the outer wall of cylindrical test joint, and the sensor signal output is connected with alarm.
Preferably, described sensor is induction coil, and is fixed on the cylindrical test joint outer wall with the clip form.
Preferably, described sensor is magnetic induction switch, and described magnetic induction switch is installed on the cylindrical test joint outer wall, and the calibration position of the measured object that passes through in cylindrical test joint is equipped with weak magnet steel.
Further, described non-magnet_conductible material is stainless steel or TC4 titanium alloy.
The utility model compared with prior art can accurately be measured steel wire (cable/coiled tubing) end and send alarm signal apart from the distance of well head and to the operator, has avoided because the tool string that the dark directional error of mechanical/electrical meter and operator's carelessness may cause is dragged initiation is pulled out in come off well accident and steel wire (cable/coiled tubing) end by the blowout prevention box gas blowout accident at last catcher place.
Description of drawings
Fig. 1 is the structure sectional view of first kind of embodiment of the utility model,
Fig. 2 is the structure sectional view of second kind of embodiment of the utility model,
Fig. 3 uses view for the utility model.
The specific embodiment
Below in conjunction with accompanying drawing 1,3 first kind of embodiment of the present utility model described.
A kind of safety trips out indicator, constituted by cylindrical test joint 1, sensor 2 and alarm 3, described cylindrical test joint 1 is made by non-magnet_conductible material, specifically, described non-magnet_conductible material is stainless steel or TC4 titanium alloy, and cylindrical test saves 1 one ends and be threaded with following catcher 4 upper ends, and the other end is threaded with lubricator 7 lower ends, described sensor 2 is installed on the outer wall of cylindrical test joint 1, and sensor 2 signal output parts are connected with alarm 3.Described sensor 2 is induction coil, and is fixed on cylindrical test with the clip form and saves on 1 outer wall.
Operating principle: induction coil produces a magnetic field after feeding electric current during work in the pipe of cylindrical test joint 1,8 pairs of these magnetic fields of steel wire (cable/coiled tubing) can produce different induced-currents in the pipe, whether rise to the cylindrical test that induction coil surveys and save 1 zone by detecting end that induced-current changes to judge steel wire (cable/coiled tubing) 8 in the pipe.When the induced signal of induction coil output is stablized, illustrate that the end of steel wire in the process of tripping out (cable/coiled tubing) 8 does not also reach the position that requires apart from well head; When changing, the induced signal of induction coil output illustrates that the end of steel wire (cable/coiled tubing) 8 has arrived in the distance that requires apart from well head, just the end of steel wire (cable/coiled tubing) 8 has entered the cylindrical test that induction coil surveys and has saved 1 zone, but do not enter as yet in the lubricator 7, this moment, alarm 3 sent alarm signal to the operator, notifying operation personnel reduction trips out speed and begins to observe down catcher 4, instantly catcher 4 folding handles are finished opening and closing movement, show that steel wire (cable/coiled tubing) 8 bottom tool strings are about to enter in the lubricator 7, stop to trip out operation this moment, closes preventer 9 flashboards shut-in well.
The utility model has been avoided because the tool string that the dark directional error of mechanical/electrical meter and operator's carelessness may cause is dragged initiation is pulled out in the end of come off well accident and steel wire (cable/coiled tubing) 8 by blowout prevention box 5 gas blowout accident at last catcher 10 places.
Below in conjunction with accompanying drawing 2,3 second kind of embodiment of the present utility model described.
A kind of safety trips out indicator, by cylindrical test joint 1, sensor 2 and alarm 3 constitute, described cylindrical test joint 1 is made by non-magnet_conductible material, specifically, described non-magnet_conductible material is stainless steel or TC4 titanium alloy, and cylindrical test saves 1 one ends and is threaded with following catcher 4 upper ends, the other end is threaded with lubricator 7 lower ends, described sensor 2 is installed on the outer wall of cylindrical test joint 1, and sensor 2 signal output parts are connected with alarm 3, specifically, described sensor 2 is magnetic induction switch, described magnetic induction switch is installed in cylindrical test and saves on 1 outer wall, and the calibration position of the measured object (just steel wire 8) that passes through in cylindrical test joint 1 is equipped with weak magnet steel 6.
Operating principle: when the accurate detection of needs trips out length, can adopt in steel wire (cable/coiled tubing) 8 calibration position weak magnet steel 6 is installed, this moment, cylindrical test joint 1 outside was highly sensitive magnetic induction switch, when the weak magnet steel 6 of steel wire (cable/coiled tubing) 8 calibration position installation saves 1 by cylindrical test, the magnetic induction switch output alarm signal, alarm 3 is reported to the police, and can accurately survey and trip out length, and why adopting weak magnet steel is in order to prevent logger to be produced interference.
Above-described embodiment is preferred embodiment of the present utility model, is not to limit the utility model practical range, so all equivalences of being done with the described content of the utility model claim change, all should be included within the utility model claim scope.
Claims (3)
1. safety trips out indicator, it is characterized in that: described indicator saves (1), sensor (2) and alarm (3) by cylindrical test and constitutes, described cylindrical test joint (1) is made by non-magnet_conductible material, and cylindrical test joint (1) one end is connected with following catcher (4) upper end, the other end is connected with lubricator (7) lower end, described sensor (2) is installed on the outer wall of cylindrical test joint (1), and sensor (2) signal output part is connected with alarm (3).
2. trip out indicator according to the described safety of claim 1, it is characterized in that: described sensor (2) is induction coil, and is fixed on cylindrical test joint (1) outer wall with the clip form.
3. trip out indicator according to the described safety of claim 1, it is characterized in that: described sensor (2) is magnetic induction switch, described magnetic induction switch is installed on cylindrical test joint (1) outer wall, and the calibration position of the measured object that passes through in cylindrical test joint (1) is equipped with weak magnet steel (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220271042 CN203130078U (en) | 2012-06-08 | 2012-06-08 | Safe pull-out indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220271042 CN203130078U (en) | 2012-06-08 | 2012-06-08 | Safe pull-out indicator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203130078U true CN203130078U (en) | 2013-08-14 |
Family
ID=48938069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220271042 Expired - Lifetime CN203130078U (en) | 2012-06-08 | 2012-06-08 | Safe pull-out indicator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203130078U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733797A (en) * | 2012-06-08 | 2012-10-17 | 宝鸡市赛孚石油机械有限公司 | Safe pulling-out indicator |
-
2012
- 2012-06-08 CN CN 201220271042 patent/CN203130078U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733797A (en) * | 2012-06-08 | 2012-10-17 | 宝鸡市赛孚石油机械有限公司 | Safe pulling-out indicator |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130814 |