CN103994865B - Oil casing threaded connection pneumatic sealing test device - Google Patents
Oil casing threaded connection pneumatic sealing test device Download PDFInfo
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- CN103994865B CN103994865B CN201310054717.XA CN201310054717A CN103994865B CN 103994865 B CN103994865 B CN 103994865B CN 201310054717 A CN201310054717 A CN 201310054717A CN 103994865 B CN103994865 B CN 103994865B
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- 238000007789 sealing Methods 0.000 title claims abstract description 38
- 238000001514 detection method Methods 0.000 claims abstract description 114
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 239000007788 liquid Substances 0.000 claims description 17
- 238000003780 insertion Methods 0.000 claims description 6
- 238000007689 inspection Methods 0.000 claims description 6
- 230000000875 corresponding Effects 0.000 claims description 3
- 230000002093 peripheral Effects 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000004146 energy storage Methods 0.000 claims 1
- 238000003860 storage Methods 0.000 abstract description 4
- 230000001960 triggered Effects 0.000 abstract description 4
- 239000003209 petroleum derivative Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 65
- 238000000034 method Methods 0.000 description 4
- -1 helium nitrogen Chemical compound 0.000 description 3
- 241000191291 Abies alba Species 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium(0) Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000004642 transportation engineering Methods 0.000 description 1
Abstract
The invention discloses the oil casing threaded connection pneumatic sealing test device of one kind, belong to petroleum gas engineering and gas storage field.The oil casing threaded connection pneumatic sealing test device includes pneumatic motive power system, detection air supply system and detection execution system；Detect that air supply system includes booster-type accumulator and detection source of the gas；Detect that execution system includes detection instrument, gas-collecting sleeve and leak detector, detection kit includes detection body, at least one central tube and packing element；Air outlet valve assembly is installed on detection body；When being detected, detection gas enters in tubing and casing to be measured；After the completion of detection, packing element is unsealed, detection gas is discharged by annular space, easy to operate, technically reliable, and the leak data recorded by leak detector gives a forecast to blow-by screw thread in time, the screw thread of leakage is effectively rejected, the sealing for Site Detection tubing and casing provides safety guarantee, avoid because screw thread leaks the massive losses triggered, it is ensured that the stable exploitation of gas well for a long time.
Description
Technical field
The present invention relates to fields such as petroleum gas engineering and gas storages, more particularly to a kind of oil casing threaded connection is airtight
Seal detection means.
Background technology
As deep-well, horizontal well exploration and development technology are constantly promoted, and natural gas and gas storage large-scale development, it is right
The sealing requirements more and more higher of tubing and casing.To ensure the sealing into well tubing and casing, some high-pressure gas wells, H are particularly2S wells, CO2
Well, gas injection well or densely populated regional well, gas storage well etc., the sealing of tubing and casing is particularly important.
Due to factors such as colliding with the machining tolerance of tubing and casing, transportation, microcorrosions, particularly under high-pressure gas well
Such as torque wrench moment is unreasonable in tubing and casing operation process and the multiple Reusability of oil pipe, easily causes sealing property to fail.
There are a statistics, the damage of oil casing, 90% or so is caused by screw thread link.Therefore oil casing threaded sealing is detected in time
Property, it is the necessary means for preventing potential safety hazard, the especially exploitation to the high sulfur Gas Fields of high pressure and gas storage note is adopted production and weighed very much
Will.However, oil casing threaded connection of the domestic market also not dedicated for detecting oil casing threaded sealing is airtight
Seal detection means.
The content of the invention
In order to solve it is above-mentioned can detect oil casing threaded sealing in time the problem of, the embodiments of the invention provide one kind
Oil casing threaded connection pneumatic sealing test device.The technical scheme is as follows：
On the one hand there is provided the oil casing threaded connection pneumatic sealing test device of one kind, for detecting oil casing collar screw thread
Air-tightness, it include pneumatic motive power system, detection air supply system and detection execution system；Detect that air supply system includes supercharging and stored up
Can device and operationally connect in booster-type accumulator and into booster-type accumulator conveying detection gas detection source of the gas；Pneumatic motive power
System include operationally connect in booster-type accumulator and into booster-type accumulator inject water under high pressure water source；Detect execution system
Including detection instrument, gas-collecting sleeve and leak detector, detection instrument is operably positioned in tubing and casing to be detected, and by oil jacket to be measured
To be detected section of sealing of pipe, gas-collecting sleeve is arranged on the outer peripheral face of the box cupling of tubing and casing to be detected, and leak detector is connected with gas-collecting sleeve；Inspection
Survey instrument includes detection body；At least one central tube and fixation for being fixed on detection body are set in outside at least one central tube
Corresponding packing element, the quantity of at least one central tube and at least one packing element is according to tubing and casing to be detected
Length needs to set；Detect the outer wall of body to be formed with the inwall of tubing and casing to be detected on the annular space of closing, detection body to pacify
Air outlet valve assembly equipped with insertion or blocking annular space and central tube；Gas in booster-type accumulator operationally enters central tube
It is interior；When being detected, the detection gas in detection source of the gas passes sequentially through booster-type accumulator, central tube and air outlet valve assembly and entered
In tubing and casing to be measured；After the completion of detection, packing element deblocking, detection gas is discharged by annular space；
Air outlet valve assembly includes the valve rod being slidably mounted in through hole and the back-moving spring being enclosed on valve rod, and is set on valve rod
There is a plug for operationally closing or opening through hole.
Further, in addition to control system, control system includes control main frame, and booster-type accumulator with water source provided with being connected
Liquid inlet, pneumatic motive power system connection control main frame, and pneumatic motive power system also include be connected with each other low-pressure centrifugal pump
And high-pressure plunger pump, low-pressure centrifugal pump is connected to water source, and high-pressure plunger pump is connected to liquid inlet.
Further, the first high pressure relief valve of connection control main frame is additionally provided between water source and liquid inlet.
Further, be also serially connected with a high pressure gauge electrically connected with control main frame on liquid inlet, high-pressure plunger pump with
High pressure check valve is also serially connected between liquid inlet.
Further, booster-type accumulator is additionally provided with the gas access being connected with central tube, detection air supply system also include with
The first high-pressure stop valve and the second high-pressure stop valve of control main frame connection, the first high-pressure stop valve are connected to gas access, the
Two high-pressure stop valves are connected to the first high-pressure stop valve and central tube.
Further, the first end of central tube is provided with gas-tpe fitting, and the second end of central tube, which is provided with, to be easy to be put into oil to be measured
Guide pad in sleeve pipe；Second high-pressure stop valve is connected to the first high-pressure stop valve and gas-tpe fitting.
Further, the high pressure of a connection control main frame is also serially connected between the second high-pressure stop valve and gas-tpe fitting
Table.
Further, gas-tpe fitting is fixed on central tube by a top connection, and gas-tpe fitting and top connection and on connect
Sealing ring is equipped between head and central tube.
Further, detection source of the gas is connected between gas access, and detection source of the gas and gas access and has also been sequentially connected in series
Gas stop valve and high pressure check valve.
Further, control system also includes the winch being connected with control main frame, and detection instrument is provided with one operationally
The operation ring lifted with winch.
The beneficial effect that technical scheme provided in an embodiment of the present invention is brought is：The oil casing threaded connection of the present invention is airtight
Envelope detection means will detect the detection instrument that is conveyed to after gas increase by accumulator, and be emitted into detection gas by detecting
In tubing and casing to be measured；The detection gas leaked at the box cupling for collecting set collection tubing and casing to be measured is recycled, and passes through leak detector pair
Scene enters the progress of tubing and casing during well and detected, easy to operate, technically reliable, and implementation cost is low.Pass through leak detector
The leak data recorded in display screen gives a forecast to blow-by screw thread in time, effectively rejects the screw thread of leakage, is Site Detection
Oil pipe and sleeve pipe overall tightness provide safety guarantee, it is to avoid because screw thread leaks the massive losses triggered, it is ensured that gas well is long-term
Stable exploitation.The oil casing threaded connection pneumatic sealing test device of the present invention is automatically brought into operation using console, and scene is operable
Property it is strong, and operation is rapid, and other live operation process are not influenceed.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, makes required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the structural representation of oil casing threaded connection pneumatic sealing test device provided in an embodiment of the present invention；
Fig. 2 is the structural representation for detecting instrument in Fig. 1.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
Referring to Fig. 1, it is used for the embodiments of the invention provide the oil casing threaded connection pneumatic sealing test device of one kind to scene
The equipment such as oil casing threaded secondary and ground feed-line, christmas tree, are entering well and are testing envelope detection using preceding progress, to ensure oil jacket
Pipe and ground feed-line, the air-tightness of christmas tree.The oil casing threaded connection pneumatic sealing test device include control system 1,
The pneumatic motive power system 3 that is connected with control system 1, the detection air supply system 5 being connected with control system 1 and connect with control system 1
The detection execution system 9 connect.
Control system 1 includes control main frame 10, is integrated in the console for being easy to monitoring and selection operation in control main frame 10
11 and the winch 13 that is connected with control main frame 10.Control main frame 10 is triggered by selecting the operation item on console 11, then
By control main frame 10 send control signal control pneumatic motive power system 3, detection air supply system 5 and detect execution system 9 fortune
Make.Preferably, in the present embodiment, console 11 is provided with operator control panel, by the select button on selection operation screen, to control
Pneumatic motive power system 3 processed, detection air supply system 5 and the motion for detecting execution system 9.
Detect that air supply system 5 includes booster-type accumulator 7, detection source of the gas 51, the first high-pressure stop valve 53 and the second high pressure and cut
Only valve 55.Booster-type accumulator 7 is provided with liquid inlet 71 and gas access 73.Detect the gas of source of the gas 51 and booster-type accumulator 7
The insertion of entrance 73 is connected, to inject detection gas into booster-type accumulator 7, and between detection source of the gas 51 and gas access 73 also
It has been sequentially connected in series gas stop valve 511 and high pressure check valve 513.Gas is also serially connected between gas stop valve 51 and detection source of the gas 5
Body pressure-relief valve 57.Preferably, in the present embodiment, detection source of the gas 51 is helium nitrogen gas mixing device, helium tank and nitrogen cylinder or helium
Nitrogen mixed gas bottle.
First high-pressure stop valve 53 and the second high-pressure stop valve 55 connect control main frame 10, and this is controlled by control main frame 10
The opening and closing of first high-pressure stop valve 53 and the second high-pressure stop valve 55.First high-pressure stop valve 53 and high pressure check valve
After 513 outlet connection, the gas access 73 of booster-type accumulator 7 is connected in the lump.Second high-pressure stop valve 55 and the first high pressure
Stop valve 53 is concatenated.
Pneumatic motive power system 3 includes providing water source 31, low-pressure centrifugal pump 33 and the high-pressure column of water under high pressure to booster-type accumulator 7
Fill in pump 35.In the present embodiment, water source 31 is stainless steel water tank, and the liquid of the entrance and booster-type accumulator 7 at water source 31 enters
Mouth 71 connects insertions, so, and booster-type accumulator 7 is using the high-pressure water from pneumatic motive power system 3 to entering booster-type accumulator 7
Interior helium nitrogen mixture gas is pressurized.The first high pressure relief valve 37 is provided between water source 31 and liquid inlet 71.First high pressure
Pressure-relief valve 37 connects control main frame 10, the break-make of the first high pressure relief valve 37 is controlled by control main frame 10, so as to control liquid
Circulation or shut-off of the body between booster-type accumulator 7 and water source 31.Preferably, in the present embodiment, the first high pressure relief valve
A high pressure gauge 39 for playing monitoring, and the high pressure gauge 39 connection control main frame 10 are additionally provided between 37 and liquid inlet 71,
In order to which the pressure signal in the booster-type accumulator 7 monitored is sent to control main frame 10 in time.Low-pressure centrifugal pump 33 with
High-pressure plunger pump 35 is mutually concatenated, and is all connected with control main frame 10；Low-pressure centrifugal pump 33 is connected with the entrance at water source 31；High-pressure column
Plug pump 35 is connected insertion with liquid inlet 71.Preferably, in the present embodiment, the entrance at low-pressure centrifugal pump 33 and water source 31 it
Between be serially connected with filter 32；High pressure check valve 34 is serially connected between high-pressure plunger pump 35 and liquid inlet 71.
Detect that execution system 9 includes detection instrument 91, gas-collecting sleeve 93 and leak detector 95.Detection instrument 91 passes through one second
High-pressure decompression valve 97 is connected to control main frame 10, so as to control the motion of detection instrument 91 by control main frame 10.Detection instrument 91
The gas access 73 of booster-type accumulator 7 is connected to, for the detection gas in booster-type accumulator 7 to be injected into oil jacket to be detected
In pipe, and to be detected section of tubing and casing to be measured is sealed.Gas-collecting sleeve 93 is used for the outside for covering on oil casing collar to be detected,
For collecting the detection gas that threadingly pair is leaked out out of oil casing collar to be detected.Gas-collecting sleeve 93 is closed set
Son, and it is provided only with a small opening.Leak detector 95 is used for the content of the tubing and casing gas leakage of detection, and it passes through one
Bar pipeline (not shown) is connected with gas-collecting sleeve 93.Pipeline passes through the minute opening of gas-collecting sleeve 93, and (figure is not for the pipeline probe of pipeline
Show) it is located in gas-collecting sleeve 93.Leak detector 95 also includes the display screen (not shown) of a display leakage value.
Incorporated by reference to reference picture 2, detection instrument 91 include hollow detection body 911, be fixed on detect body 911 in
The packing element 914 of heart pipe 912 and fixed cover in the outer peripheral face of central tube 912.Wherein, central tube 912 and detection body 911
Alignment is socketed side by side, and the centre bore of central tube 912 is with detecting that hollow align of body 911 connects.When being detected, detection
Instrument 91 is placed in tubing and casing to be detected, and detection body 911 outer wall and tubing and casing to be detected in keep away between formed
There is annular space (not shown).
The periphery of the first end of central tube 912, which is fixed with top connection 916, and top connection 916, to be fixed with and the second high pressure
The gas-tpe fitting 917 that relief valve 97 is connected.Second high-pressure stop valve 55 of the gas-tpe fitting 917 also with detection air supply system 5 is connected,
Preferably, in the present embodiment, high pressure gauge 22, and the height are serially connected between the high-pressure stop valve 55 of gas-tpe fitting 917 and second
The connection control main frame 10 of table 22 is pressed, in order to which high pressure gauge 22 in time sends the pressure signal in the detection instrument 91 monitored
To control main frame 10.Second end of central tube 912 is fixed with a guide pad 918.Preferably, in the present embodiment, this is led
Exposed to block 918 central tube 912 position it is tapered, in order to be put into the mistake of tubing and casing to be detected in detection instrument 91
Cheng Zhong, guiding detection instrument 91 is rapidly introduced into tubing and casing to be detected.Preferably, in the present embodiment, in order to improve
Sealing effectiveness, sealing ring is equipped with (not between above-mentioned gas-tpe fitting 917 and top connection 916 and top connection 916 and central tube 912
Label).
Body 911 is detected provided with the through hole 20 with extraneous insertion, and air outlet valve assembly 21 is installed in the through hole 20.Inspection
The the opening or closing by the air outlet valve assembly 21 of body 911 is surveyed, connects or hinders with annular space inside the centre bore for making central tube 912
It is disconnected.Air outlet valve assembly 21 includes the valve rod 24 being slidably mounted in through hole 20 and the back-moving spring 23 being enclosed on valve rod 24, and valve
Bar 24 operationally closes or opened the plug 25 of through hole 20 provided with one.When entering inspection in the centre bore of central tube 912
When surveying gas, detection gas enters in detection body 911, so as to force valve rod 24 to move out by gas pressure intensity, and opens
Through hole 20, makes the detection gas in detection instrument 91 be entered by through hole 20 in tubing and casing to be detected；When detection body 911
Interior gas pressure is reached when setting pressure, and air outlet valve assembly 21 is closed immediately, now, and the plug 25 of valve rod 24 blocks through hole
20, air outlet valve assembly 21 is closed immediately.
Preferably, for the ease of operation, detection instrument 91 is consolidated provided with a winch 13 operationally with control system 1
Fixed operation ring 6, specifically, in the present embodiment, operation ring 6 is arranged in top connection 916.
In other embodiments, according to the length needs of tubing and casing to be detected, above-mentioned detection instrument 91 can set one
Or multiple central tubes and corresponding packing element.
When the oil casing threaded connection pneumatic sealing test device using the present invention, control main frame 10 controls the second high pressure to let out
Pressure valve 97 is opening；And the gas stop valve 511 in open detection air supply system 5 simultaneously, make the inspection in detection source of the gas 51
Gas is surveyed to be injected into booster-type accumulator 7；When the gas pressure intensity in the booster-type accumulator 7 that high pressure gauge 39 is tested reaches the first pressure
During P1, close gas stop valve 511 and stop injecting gas into booster-type accumulator 7.Now, control main frame 10 starts high-pressure plunger
Pump 35, makes high-pressure water in water source 31 enter in booster-type accumulator 7, with to the detection gas boosting in booster-type accumulator 7 extremely
The second pressure of pressure P2.At this moment, the control of control main frame 10 winch 13 hooks the operation ring 6 of detection instrument 91, slings detection instrument
91 and detection instrument 91 is transferred to tubing and casing to be checked, and adjust box cupling of the detection instrument 91 just to tubing and casing to be checked.Will collection
Air-casing 93 is arranged on the outside of oil casing collar to be measured, and leak detector 95 is connected into gas-collecting sleeve 93.
After detection instrument 91, gas-collecting sleeve 93 and leak detector 95 are installed, control main frame 10 closes the second high pressure relief
Valve 97, and the first high-pressure stop valve 53 and the second high-pressure stop valve 55 are opened simultaneously.Now, the detection gas of booster-type accumulator 7
Entered back into after entering the detection instrument 91 by the gas-tpe fitting 917 of detection instrument 91 in tubing and casing to be detected.Then, control
Main frame 10 starts low-pressure centrifugal pump 33, the high-pressure water in water source 31 is entered in booster-type accumulator 7, with to booster-type accumulator 7
In detection gas boosting to the detection pressure P3 needed, and after keeping detection pressure P3 for a period of time, observe leak detector 95
Display screen in the leak data that records.When the leakage value that leak detector 95 is detected is higher than leakage value set in advance, then illustrate
Tubing and casing gas leakage to be detected to be detected, it is necessary to oil casing threaded rectify and improve；When the leakage value that leak detector 95 is detected is less than in advance
During the leakage value first set, then illustrate that tubing and casing to be detected is qualified, meet seal request, well can be entered and used.
After detection is finished, the first high pressure relief valve 37 and the second high pressure relief valve 97 are opened in the control of control main frame 10.At this moment,
First high pressure relief valve 37 lays down the pressure in booster-type accumulator 7, is easy to detect the detection gas in source of the gas 51 in next inspection
Enter booster-type accumulator 7 in the survey cycle；At the same time, the increase water source of booster-type accumulator 7 is back to water source 31.Second high pressure is unloaded
Pressure valve 97 1 is opened, and the air outlet valve assembly 21 of detection instrument 91 is opened, and the packing element 914 of detection instrument 91 is unsealed, detection
91 high pressure detection gas is discharged by detecting the annular space between the outer wall of instrument 91 and the inwall of tubing and casing to be measured in instrument.
From above-mentioned narration：The oil casing threaded connection pneumatic sealing test device of the present invention will by booster-type accumulator 7
Detection instrument 91 is conveyed to after detection gas increase, and detection gas is emitted into tubing and casing to be measured by detection 91；It is sharp again
The detection gas of leakage at the box cupling of tubing and casing to be measured is collected with set 93 is collected, and by 95 pairs of scenes of leak detector or enters well process
The progress of middle tubing and casing detects, easy to operate, technically reliable, and implementation cost is low.By being recorded in the display screen of leak detector 95
Leak data blow-by screw thread is given a forecast in time, effectively reject leakage screw thread, be that Site Detection oil pipe and sleeve pipe are whole
Body sealing provides safety guarantee, it is to avoid because screw thread leaks the massive losses triggered, it is ensured that the stable exploitation of gas well for a long time.This
The oil casing threaded connection pneumatic sealing test device of invention is automatically brought into operation using control main frame 10, and scene is workable, and is made
Industry is rapid, and other live operation process are not influenceed.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (10)
1. a kind of oil casing threaded connection pneumatic sealing test device, the air-tightness for detecting oil casing collar screw thread, its feature
It is, the oil casing threaded connection pneumatic sealing test device includes pneumatic motive power system (3), detection air supply system (5) and inspection
Survey execution system (9)；
It is described detection air supply system (5) include booster-type accumulator (7) and operationally connect in the booster-type accumulator (7) and to
The detection source of the gas (51) of conveying detection gas in the booster-type accumulator (7)；
The pneumatic motive power system (3) includes operationally connecting in the booster-type accumulator (7) and to the booster-type accumulator
(7) water source (31) of injection water under high pressure in；
The detection execution system (9) includes detection instrument (91), gas-collecting sleeve (93) and leak detector (95), the detection instrument
(91) it is operably positioned in tubing and casing to be detected, and to be detected section of the tubing and casing to be measured is sealed, the gas-collecting sleeve
(93) outer peripheral face of the box cupling of the tubing and casing to be detected is arranged on, the leak detector (95) is connected with the gas-collecting sleeve (93)；
The detection instrument (91) includes detection body (911)；It is fixed at least one central tube of the detection body (911)
(912) and the fixed corresponding packing element (914) being set in outside at least one described central tube, at least one described center
The quantity of pipe (912) and at least one packing element (914) needs to set according to the length of the tubing and casing to be detected；
The outer wall of the detection body (911) and the inwall of the tubing and casing to be detected are formed with the annular space of closing, the detection body
(911) insertion is installed on or the air outlet valve assembly (21) of the annular space and the central tube (912) is blocked；
Gas in the booster-type accumulator (7) operationally enters in the central tube (912)；
When being detected, the detection gas in the detection source of the gas (51) passes sequentially through the booster-type accumulator (7), central tube
(912) and in the air outlet valve assembly (21) the entrance tubing and casing to be measured；After the completion of detection, the packing element
(914) unseal, the detection gas is discharged by the annular space；
The air outlet valve assembly (21) includes the valve rod (24) being slidably mounted in through hole (20) and is enclosed on the valve rod (24)
Back-moving spring (23), and the valve rod (24) is provided with a plug for operationally closing or opening the through hole (20)
(25)。
2. oil casing threaded connection pneumatic sealing test device according to claim 1, it is characterised in that also including control system
Unite (1), the control system (1) includes control main frame（10）, the booster-type accumulator (7) with the water source (31) provided with being connected
Liquid inlet (71), the pneumatic motive power system (3) connects the control main frame (10), and the pneumatic motive power system (3)
Also include the low-pressure centrifugal pump (33) and high-pressure plunger pump (35) being connected with each other, the low-pressure centrifugal pump (33) is connected to the water
Source (31), the high-pressure plunger pump (35) is connected to the liquid inlet (71).
3. oil casing threaded connection pneumatic sealing test device according to claim 2, it is characterised in that the water source (31)
The first high pressure relief valve (37) for being connected the control main frame (10) is additionally provided between the liquid inlet (71).
4. oil casing threaded connection pneumatic sealing test device according to claim 2, it is characterised in that the liquid inlet
(71) high pressure gauge (39) electrically connected with the control main frame (10), the high-pressure plunger pump (35) and institute are also serially connected with
State and be also serially connected with high pressure check valve (34) between liquid inlet (71).
5. oil casing threaded connection pneumatic sealing test device according to claim 2, it is characterised in that the supercharging energy storage
Device (7) is additionally provided with the gas access (73) being connected with the central tube (912), and the detection air supply system (5) also includes and institute
State the first high-pressure stop valve (53) and the second high-pressure stop valve (55) of control main frame (10) connection, first high-pressure stop valve
(53) gas access (73) is connected to, second high-pressure stop valve (55) is connected to first high-pressure stop valve
And the central tube (912) (53).
6. oil casing threaded connection pneumatic sealing test device according to claim 5, it is characterised in that the central tube
(912) first end is provided with gas-tpe fitting (917), and the second end of the central tube (912), which is provided with, to be easy to be put into the oil to be measured
Guide pad (918) in sleeve pipe；Second high-pressure stop valve (55) be connected to first high-pressure stop valve (53) and
The gas-tpe fitting (917).
7. oil casing threaded connection pneumatic sealing test device according to claim 6, it is characterised in that second high pressure
A high pressure gauge for being connected the control main frame (10) is also serially connected between stop valve (55) and the gas-tpe fitting (917)
(22)。
8. oil casing threaded connection pneumatic sealing test device according to claim 6, it is characterised in that the gas-tpe fitting
(917) central tube (912), and the gas-tpe fitting (917) and the top connection are fixed on by a top connection (916)
(916) and between the top connection (916) and the central tube (912) it is equipped with sealing ring.
9. oil casing threaded connection pneumatic sealing test device according to claim 5, it is characterised in that the detection source of the gas
(51) it is connected between the gas access (73), and the detection source of the gas (51) and the gas access (73) and is also sequentially connected in series
There are gas stop valve (511) and high pressure check valve (513).
10. oil casing threaded connection pneumatic sealing test device according to claim 5, it is characterised in that the control system
System (1) also includes the winch (13) being connected with the control main frame (10), and the detection instrument (91) is provided with one operationally
The operation ring (6) lifted with the winch (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310054717.XA CN103994865B (en) | 2013-02-20 | 2013-02-20 | Oil casing threaded connection pneumatic sealing test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310054717.XA CN103994865B (en) | 2013-02-20 | 2013-02-20 | Oil casing threaded connection pneumatic sealing test device |
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| Publication Number | Publication Date |
|---|---|
| CN103994865A CN103994865A (en) | 2014-08-20 |
| CN103994865B true CN103994865B (en) | 2017-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310054717.XA Active CN103994865B (en) | 2013-02-20 | 2013-02-20 | Oil casing threaded connection pneumatic sealing test device |
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| CN104483072B (en) * | 2014-11-24 | 2017-02-08 | 中国石油天然气集团公司 | Internal pressure air-tightness detection device applicable to threaded connector for extreme-line casing and oil pipe |
| CN106644316A (en) * | 2017-03-02 | 2017-05-10 | 西南石油大学 | Device, system and method for detecting air impermeability of oil casing screw thread |
| CN110160707A (en) * | 2018-01-30 | 2019-08-23 | 张佳宁 | A kind of tubing and casing antisepsis production line leak source automatic detection device |
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