CN108361025A - Pumpingh well Pipe String Pressure Testing Advice - Google Patents
Pumpingh well Pipe String Pressure Testing Advice Download PDFInfo
- Publication number
- CN108361025A CN108361025A CN201810417377.5A CN201810417377A CN108361025A CN 108361025 A CN108361025 A CN 108361025A CN 201810417377 A CN201810417377 A CN 201810417377A CN 108361025 A CN108361025 A CN 108361025A
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- valve
- sealing
- pressure testing
- pressure
- pumpingh well
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- 238000012360 testing method Methods 0.000 title claims abstract description 35
- 238000007789 sealing Methods 0.000 claims abstract description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000000725 suspension Substances 0.000 claims abstract description 18
- 230000006835 compression Effects 0.000 claims abstract description 17
- 238000007906 compression Methods 0.000 claims abstract description 17
- 230000010412 perfusion Effects 0.000 claims abstract description 13
- 238000010168 coupling process Methods 0.000 claims description 24
- 238000005859 coupling reaction Methods 0.000 claims description 24
- 230000008878 coupling Effects 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 239000003129 oil well Substances 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 5
- 238000010079 rubber tapping Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 7
- 238000007689 inspection Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
Landscapes
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Check Valves (AREA)
Abstract
To down-hole string pressure testing when examining lower pump operation the present invention relates to a kind of pumpingh well, to reach the pumpingh well Pipe String Pressure Testing Advice for examining down-hole string leakproofness purpose, including well head suspension, valve group, power section, compression portion, water conservancy diversion perfusion and seal assembly.Well head suspension is mainly made of proposition short circuit and suspension box cupling etc., valve group is made of return of stroke valve and sebific duct, power section is mainly made of piston body, cylinder barrel and piston rod, compression portion is equipped with pump barrel, upper valve body, valve ball, valve seat, plunger and tapping valve, water conservancy diversion perfusion is made of fittings body, connecting tube and baffle etc., seal assembly is made of flow tube, sealing element, line pipe and cyclone, and above-mentioned part forms the entirety of an oil field operation pumpingh well Pipe String Pressure Testing Advice.The present invention completes oil well pipe work pressure test using the water supply of water mixing pipeline or the power of tank car water supply and working rig itself of oil well itself.Pressure testing vehicle group expense can be saved and ensure that construction speed.
Description
Technical field
To down-hole string when examining lower pump operation the present invention relates to a kind of pressure test device more particularly to a kind of pumpingh well
The pumpingh well Pipe String Pressure Testing Advice of pressure testing.
Background technology
Under pumpingh well inspection in pump job execution, after tubing string is gone into the well, pressure testing, pressure testing are carried out to tubing string by technological requirement
After qualification could into tubing string tripping in oil pump piston and sucker rod.Water-tank lorry and high pressure pump truck are used when previous oil well pressure testing
It completes.Presently, there are water-tank lorry and high pressure pump truck vehicle group are costly for this method pressure testing；Water-tank lorry and high pressure pump truck are frequent
It cannot be in time, to influence job execution progress.
Invention content
The characteristics of present invention constructs for the above situation and oil field operation, providing a kind of can utilize mixing for oil well itself
Water pipeline water（The well of no water mixing pipeline only needs a tank car water supply）Oil well pipe is completed with the power of working rig itself
The pumpingh well Pipe String Pressure Testing Advice of work pressure test.
The present invention can partly be realized when on-site voltage-measuring the function of pump truck, has simple in structure, easy to use, easy behaviour
Make, securely and reliably, save space the characteristics of, you can save pressure testing vehicle group expense ensure that construction speed.It is small to increase operation
The work initiative of team, thus there is significant economic benefit.
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of pumpingh well Pipe String Pressure Testing Advice, it is characterised in that it includes well head suspension, valve group, power section, compression portion, leads
Infusate flow and seal assembly；Setting suspension box cupling is connect with short circuit and connecting tube is proposed respectively in well head suspension, Hanging bolt peace
In suspension box cupling, one end is fixed by nut, and the other end is mounted in the top connection of power section；Valve group is equipped with return of stroke
Valve is connect with top connection and lower contact respectively by sebific duct I, sebific duct II and pipe fitting；Power section is mounted on equipped with cylinder barrel
In connecting tube, it is connected with the upper and lower connector of top connection, the piston body being arranged in cylinder barrel is installed on the piston rod, the piston rod other end
Connecting rod is connected, the locking set and shifting block head on connecting rod are for limiting；Compression portion is equipped with plunger and connects respectively with connecting rod and pump barrel
It connects, pump barrel is connect with II inside of box cupling, and II one end of box cupling is connected with connecting tube, and the other end is connect with upper valve body, upper valve body and change
Diameter box cupling I is connected；Baffle one end in water conservancy diversion perfusion is connect with sub-coupling I, and the other end is connected with short circuit；On seal assembly
Tubing hanger one end be connected on short circuit, the other end connects flow tube, be additionally provided on baffle detection pressure high pressure valve,
Vibration-proof pressure gauge and pressure meter switch, are connected by pipe fitting.
For being lifted by crane when work, the interior silk cap that is equipped with is mounted on proposition short circuit one end, proposes that short circuit is another for the well head suspension
One end is connected with suspension box cupling.
An interface on the return of stroke valve of the valve group is mounted on by pipe fitting and sebific duct I in top connection, separately
One interface is mounted on by pipe fitting and sebific duct in lower contact, which connect with working rig and water mixing pipeline, provides pressure
Use water.
It is equipped with piston body installation in cylinder barrel in the power section on the piston rod, is fixed by split pin and nut I,
Sealing between piston body and cylinder barrel is completed by sealing ring and guidance tape, and the piston rod other end connects connecting rod, is positioned by nut II,
Sealing between piston rod and piston body and lower contact is completed by sealing ring I and sealing ring, rubber dust-proof sealing ring respectively, under connect
Sealing between head and cylinder barrel is completed by sealing ring II, pushes piston body to move using the working media that valve group provides, for pressing
Power conveys.
Pressure cap is installed on the plunger on the compression portion, integral, pressure cap is connected by one end of seal box and pump barrel
Sealing between seal box is completed by pressure ring, V-shaped ring, centering ring, and the other end of pump barrel is connect with II inside of box cupling, is connect
It binds round II one end with connecting tube to be connected, one end connection of the other end and upper valve body is equipped with valve ball, valve successively in upper valve body
Seat, locking nut, silk plug, the upper valve body other end are connected with sub-coupling, and draining valve, interior installation are equipped in sub-coupling
There are valve ball, valve seat, spring, the part together with power section for carrying out pressure conveying.
It is equipped with cyclone in baffle in the water conservancy diversion perfusion, line pipe is installed on cyclone, outside baffle
Seamless pipe I to be installed on side, is fixed and is sealed by socket-welding fitting, combination sealing washer, seamless pipe II is mounted on the outside of short circuit,
It is connected by tee pipe coupling, another interface of tee pipe coupling is connected with sebific duct, the sebific duct other end and end formula free flow coupling body
Be connected, end formula free flow coupling body is fixed on upper valve body, by combination sealing washer sealing, seamless pipe I and seamless pipe II it
Between be mounted with high pressure valve, the part connect with water mixing pipeline be used for tubing string water filling.
Supporting rack, sealing element, retainer ring, box cupling I and connector are separately installed in tubing hanger on the seal assembly,
For constituting sealing cooperation with casing big four.
Upper valve body, valve ball, valve seat and locking nut on the compression portion form check valve.
Valve ball, valve seat, locking nut, spring and draining valve on the compression portion form drain tap.
Cyclone in the water conservancy diversion perfusion forms diversion chamber with line pipe.
Beneficial effects of the present invention：
1, the present invention is controlled using return of stroke valve, reduces the labor intensity of operator；
Pressure testing when 2, applied to oil pumping well operations to down-hole string, oil well pump and other tools, pressure 10-50Mpa；
3, the present invention have have it is simple in structure, it is easy to use, it is easy to operate, securely and reliably, saving space the characteristics of, you can saving
Pressure testing vehicle group expense ensures that construction speed.Increase the work initiative of operation squad；
4, portable construction is easy to transport, easy to maintenance.
Description of the drawings
Fig. 1 is pumpingh well Pipe String Pressure Testing Advice structural schematic diagram of the present invention.
Fig. 2 is well head suspended portion structural schematic diagram of the present invention.
Fig. 3 is valve group part-structure schematic diagram of the present invention.
Fig. 4 is power section structure schematic diagram of the present invention.
Fig. 5 is compression portion structural schematic diagram of the present invention.
Fig. 6 is that part-structure schematic diagram is perfused in water conservancy diversion of the present invention.
Fig. 7 is seal assembly part-structure schematic diagram of the present invention.
In Fig. 1-7,1. caps, 2. proposition short circuits, 3. suspension box cuplings, 4. nuts, 5. Hanging bolts, 6. top connections, 7. are opened
Mouth pin, 8. nuts, 9. sealing rings, 10. piston bodies, 11. guidance tapes, 12. sealing rings I, 13. cylinder barrels, 14. sealing rings II, 15. are lived
Stopper rod, 16. lower contacts, 17. sealing rings, 18. rubber dust-proof sealing rings, 19. pressure caps, 20. pressure rings, 21.V V-shaped rings, 22. are helped
Positive ring, 23. seal boxes, 24. connecting tubes, 25. pump barrels, 26. upper valve bodies, 27. valve balls, 28. valve seats, 29. locking nuts,
30. silk plug, 31. tubing hangers, 32.O shape sealing rings III, 33. supporting racks, 34. flow tubes, 35. sealing elements, 36. retainer rings, 37.
Box cupling I, 38. connectors, 39. end formula free flow coupling bodies, 40. combination sealing washers, 41. socket-welding fittings, 42. combination sealings
It is washer, 43. seamless pipes I, 44. sebific ducts III, 45. seamless pipes II, 46. tee pipe couplings, 47. line pipes, 48. cyclones, 49. short
Connect, 50. baffles, 51. springs, 52. pipe fittings, 53. high pressure valves, 54. vibration-proof pressure gauges, 55. pressure meter switches, 56. rows
Liquid valve body, 57. sub-couplings, 58. box cuplings II, 59. plungers, 60. connecting rods, 61. locking sets, 62. shifting block heads, 63. returns of stroke
Valve, 64. nuts, 65. sebific ducts I, 66. sebific ducts II, 67.O shape sealing rings, 68. combination sealing washers, 69. pipe fittings, 70. well heads
Suspension, 71. valve groups, 72. power sections, 73. compression portions, the perfusion of 74. water conservancy diversion, 75. seal assemblies.
Specific implementation mode
The detailed description present invention with reference to the accompanying drawings and examples.
Embodiment 1：
As shown in Figure 1, pumpingh well Pipe String Pressure Testing Advice include well head suspension 70, valve group 71, power section 72, compression portion 73,
Water conservancy diversion perfusion 74 and seal assembly 75；As shown in Fig. 2, well head suspension 70 is equipped with silk cap 1, it is mounted on and proposes on short circuit 2, suspension
Box cupling 3 connect with short circuit 2 and connecting tube 24 is proposed respectively, and Hanging bolt 5, which is mounted on, hangs in box cupling 3 one end by hex nut 4
The fixed other end is mounted in top connection 6；As shown in figure 3, valve group 71 is equipped with return of stroke valve 63, one of interface passes through pipe
Connector 69 and sebific duct I 65 are mounted in top connection 6, another interface is mounted on lower contact 16 by pipe fitting 69 and sebific duct II 66
On；It is mounted in connecting tube 24 as shown in figure 4, being equipped with cylinder barrel 13 in power section 72, with 6 upper and lower connector of top connection, 16 phase
Even, piston body 10 is equipped in cylinder barrel 13 to be fixed by nut 8 on piston rod 15, it is close between piston body 10 and cylinder barrel 13
Envelope is completed by sealing ring 9 and guidance tape 11, and 15 other end of piston rod connects connecting rod 60, is positioned by nut 64, piston rod 15 and work
Sealing between cock body 10 and lower contact 16 is completed by sealing ring I 12 and sealing ring 17, rubber dust-proof sealing ring 18 respectively, under connect
Sealing between first 16 and cylinder barrel 13 is completed by sealing ring II 14, locking set 61 and shifting block head 62 on connecting rod 60, for limiting；
The piston body material being arranged in power section is wear-resistant material；As shown in figure 5, plunger 59 is equipped on compression portion 73, with company
Bar 60 connects, and pressure cap 19 is installed on plunger 59, it connect integral, pressure cap 19 and seal box 23 with pump barrel 25 by seal box 23
Between sealing completed by pressure ring 20, V-shaped ring 21, centering ring 22, the other end of pump barrel 25 and II 58 inside of box cupling are connect,
II 58 one end of box cupling is connected with connecting tube 24, and the other end is connect with upper valve body 26, in upper valve body 26 successively be equipped with valve ball 27,
Valve seat 28, locking nut 29, silk plug 30,26 other end sub-coupling 57 of upper valve body are connected, and drain is equipped in sub-coupling 57
Valve body 56 is mounted therein with valve ball 27, valve seat 28, spring 51；As shown in fig. 6, water conservancy diversion perfusion 74 is equipped with baffle 50,
One end is connect with sub-coupling 57, and the other end is connected with short circuit 49, inner swirler 48, line pipe 47, in 50 outside of baffle
Upper installation seamless pipe I 43 is fixed and is sealed by socket-welding fitting 41, combination sealing washer 42, and seamless pipe II 45 is mounted on short
49 outsides are connect, are connected by tee pipe coupling 46, another interface of tee pipe coupling 46 is connected with sebific duct III 44,44 other end of sebific duct
It is connected with end formula free flow coupling body 39, end formula free flow coupling body 39 is fixed on upper valve body 26, by combination sealing washer 40
Sealing, is mounted with high pressure valve 53 between seamless pipe I 43 and seamless pipe II 45；As shown in fig. 7, seal assembly 75 is equipped with oil
Pipe hanger 31 is connected on short circuit 49, and outside is equipped with sealing ring III 32, and the other end connects flow tube 34, is separately installed with support thereon
In addition frame 33, sealing element 35, retainer ring 36, box cupling I 37 and connector 38 are additionally provided with the high pressure of detection pressure on baffle 50
Valve 53, vibration-proof pressure gauge 54 and pressure meter switch 55, are connected by pipe fitting 52.
The course of work of the present invention is as follows：
1, after under oil pipe to predetermined depth, the present apparatus is connected to the upper end of tubing string, seat enters in the cone seat of well head big four,
Ensure that the sealing element on device constitutes sealing cooperation with casing big four.
2, water mixing pipeline valve on big four is opened, then by the perfusion valve in the present apparatus（High pressure valve）, drain tap
It opens, at this moment the water in water mixing pipeline：Water mixing pipeline valve → well head big four → pouring valve → diversion chamber → underground on four-way
Tubing string, the gas in downhole oil tubing string are discharged by air bleeding valve, until tubing string is full of water.
3, perfusion valve, the drain tap in the present apparatus are closed, the oil inlet and oil return pipeline of hydraulic tongs is connected to the present apparatus and is moved
On the reversal valve interface of power part.
4, the hydraulic system on initiating task machine can be driven the pressurized cylinder realization reciprocating motion of the present apparatus, and water is made to be pressurized
It is filled with afterwards in the downhole oil tubing string for having filled water, at this moment the water in water mixing pipeline：Water mixing pipeline valve → well head is big on four-way
Four-way → communicating pipe → valve group room sucks check valve → compression portion（After supercharging）Check valve → down-hole oil tube is discharged in → valve group room
Column makes the water pressure in downhole oil tubing string gradually rise, until reaching design pressure.
5, stop boosting, observe the pressure value variation of pressure gauge, carry out the sealing situation of tubing string under inspection shaft according to this.
6, it is first turned on drain tap pressure release after pressure testing, then the present apparatus is unloaded down, load onto the good well head of tubing hanging seat,
Carry out the construction of next procedure.
In addition, to the well of no water mixing pipeline, can be supplied water to pressure testing device at well mouth with tank car, to realize the pressure testing to oil well.
Claims (10)
1. a kind of pumpingh well Pipe String Pressure Testing Advice, it is characterised in that：It includes well head suspension（70）, valve group (71), power section
(72), compression portion (73), water conservancy diversion perfusion (74) and seal assembly（75）；Well head is hung（70）Box cupling is hung in upper setting（3）Point
Not with propose short circuit（2）And connecting tube（24）Connection, Hanging bolt（5）Mounted on suspension box cupling（3）Interior, one end is by nut（4）
Fixed, the other end is mounted on the top connection of power section (72)（6）On；Valve group (71) is equipped with return of stroke valve（63）Pass through sebific duct
Ⅰ（65）, sebific duct II（66）And pipe fitting（69）, respectively with top connection（6）And lower contact（16）Connection；Power section is set on (72)
There is cylinder barrel（13）Mounted on connecting tube（24）It is interior, with top connection（6）Upper and lower connector（16）It is connected, cylinder barrel（13）The work of interior setting
Cock body（10）Mounted on piston rod（15）On, piston rod（15）The other end connects connecting rod（60）, connecting rod（60）On locking set
（61）With shifting block head（62）For limiting；Compression portion (73) is equipped with plunger（59）Respectively with connecting rod（60）And pump barrel（25）Even
It connects, pump barrel（25）With box cupling II（58）Inside connection, box cupling II（58）One end and connecting tube（24）It is connected, the other end and upper valve body
（26）Connection, upper valve body（26）With sub-coupling I（57）It is connected；The baffle on (74) is perfused in water conservancy diversion（50）One end connects with reducing
Hoop I（57）Connection, the other end and short circuit（49）It is connected；Seal assembly（75）On tubing hanger（31）One end is connected to short circuit（49）
On, the other end connects flow tube（34）, baffle（50）On be additionally provided with detection pressure high pressure valve（53）, vibration-proof pressure gauge
（54）And pressure meter switch（55）, by pipe fitting（52）Connection.
2. pumpingh well Pipe String Pressure Testing Advice according to claim 1, it is characterised in that：The well head suspension（70）For
It is lifted by crane when work, it is interior to be equipped with silk cap（1）Mounted on proposition short circuit（2）One end proposes short circuit（2）The other end and suspension box cupling（3）
It is connected.
3. pumpingh well Pipe String Pressure Testing Advice according to claim 1, it is characterised in that：The stroke of the valve group (71)
Reversal valve（63）On an interface pass through pipe fitting（69）With sebific duct I（65）Mounted on top connection（6）On, another interface is logical
Cross pipe fitting（69）With sebific duct II（66）Mounted on lower contact（16）On, the valve group（71）It is connect with working rig hydraulic valve bank, with
Realize water supply pressurization.
4. pumpingh well Pipe String Pressure Testing Advice according to claim 1, it is characterised in that：In the power section (72)
Cylinder barrel（13）It is interior to be equipped with piston body（10）Mounted on piston rod（15）On, by split pin（7）With nut I（8）It is fixed, piston body
（10）With cylinder barrel（13）Between sealing by sealing ring（9）And guidance tape（11）It completes, piston rod（15）The other end connects connecting rod
（60）, by nut II（64）Positioning, piston rod（15）With piston body（10）And lower contact（16）Between sealing respectively by sealing
Circle I（12）And sealing ring（17）, rubber dust-proof sealing ring（18）It completes, lower contact（16）With cylinder barrel（13）Between sealing by close
Seal II（14）It completes, piston body is pushed using the working media that valve group (71) provides（10）Movement is conveyed for pressure.
5. pumpingh well Pipe String Pressure Testing Advice according to claim 1, it is characterised in that：On the compression portion (73)
Plunger（59）Upper installation pressure cap（19）Pass through seal box（23）With pump barrel（25）One end connect integral, pressure cap（19）With sealing
Box（23）Between sealing by pressure ring（20）, V-shaped ring（21）, centering ring（22）It completes, pump barrel（25）The other end with connect
Hoop II（58）Inside connection, box cupling II（58）One end and connecting tube（24）It is connected, the other end and upper valve body（26）One end connection,
In upper valve body（26）It is inside equipped with valve ball successively（27）, valve seat（28）, locking nut（29）, silk plug (30), upper valve body（26）
The other end and sub-coupling（57）It is connected, sub-coupling（57）It is interior to be equipped with draining valve（56）, it is mounted therein with valve ball（27）、
Valve seat（28）, spring（51）, which is used to carry out pressure conveying together with power section (72).
6. pumpingh well Pipe String Pressure Testing Advice according to claim 1, it is characterised in that：In the water conservancy diversion perfusion (74)
Baffle（50）It is interior to be equipped with cyclone（48）, in cyclone（48）Upper installation line pipe（47）, in baffle（50）Pacify on outside
Fill seamless pipe I（43）, by socket-welding fitting（41）, combination sealing washer（42）It fixes and seals, seamless pipe II（45）Installation
In short circuit（49）Outside, by tee pipe coupling（46）Connection, tee pipe coupling（46）Another interface be connected with sebific duct III（44）,
Sebific duct III（44）The other end and end formula free flow coupling body（39）It is connected, holds formula free flow coupling body（39）It is fixed on upper valve body
（26）On, by combination sealing washer（40）Sealing, in seamless pipe I（43）With seamless pipe（45）High pressure valve is mounted between II
（53）, which connect with water mixing pipeline is used for tubing string water filling.
7. pumpingh well Pipe String Pressure Testing Advice according to claim 1, it is characterised in that：The seal assembly（75）On
Tubing hanger（31）On be separately installed with supporting rack（33）, sealing element（35）, retainer ring（36）, box cupling I（37）And connector（38）, use
Coordinate in constituting sealing with casing big four.
8. pumpingh well Pipe String Pressure Testing Advice according to claim 5, it is characterised in that：On the compression portion (73)
Upper valve body（26）, valve ball（27）, valve seat（28）And locking nut（29）Form check valve.
9. pumpingh well Pipe String Pressure Testing Advice according to claim 5, it is characterised in that：On the compression portion (73)
Valve ball（27）, valve seat（28）, locking nut（29）, spring（51）And draining valve（56）Form drain tap.
10. pumpingh well Pipe String Pressure Testing Advice according to claim 6, it is characterised in that：In the water conservancy diversion perfusion (74)
Cyclone（48）With line pipe（47）Form diversion chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810417377.5A CN108361025B (en) | 2018-05-04 | 2018-05-04 | Pressure testing device for pumping well pipe column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810417377.5A CN108361025B (en) | 2018-05-04 | 2018-05-04 | Pressure testing device for pumping well pipe column |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108361025A true CN108361025A (en) | 2018-08-03 |
| CN108361025B CN108361025B (en) | 2023-12-29 |
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ID=63011629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810417377.5A Active CN108361025B (en) | 2018-05-04 | 2018-05-04 | Pressure testing device for pumping well pipe column |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115628984A (en) * | 2022-09-28 | 2023-01-20 | 中信重工机械股份有限公司 | Pressure test tool and method for narrow closed oil cavity of piston rod with double-layer welding structure |
| CN116577091A (en) * | 2023-07-11 | 2023-08-11 | 陕西海格瑞恩实业有限公司 | Pressure testing device for underground testing tool of oil field |
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