CN207813531U - A kind of pressure testing device for preventing mud from being sprayed from oil pipe - Google Patents
A kind of pressure testing device for preventing mud from being sprayed from oil pipe Download PDFInfo
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- CN207813531U CN207813531U CN201820108998.0U CN201820108998U CN207813531U CN 207813531 U CN207813531 U CN 207813531U CN 201820108998 U CN201820108998 U CN 201820108998U CN 207813531 U CN207813531 U CN 207813531U
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- valve
- valve seat
- spring
- bonnet
- top connection
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Abstract
A kind of pressure testing device for preventing mud from being sprayed from oil pipe,Communication groove is provided on valve bonnet,The external screw thread that spring adjusts head lower part is connect with the internal thread on valve bonnet top,Pressure spring,Valve ball is placed in valve bonnet,The top screw thread of valve seat and the lower thread of valve bonnet connect,Valve ball diameter is more than the aperture of valve seat,The valve port fitted seal of valve ball and valve seat,The upper surface of pressure spring withstands on spring and adjusts on the lower face of head,Pressure spring pushes down valve ball,Spring adjusts head,Valve bonnet,Pressure spring,Valve ball,Valve seat is placed in after being assembled integrally in the lower part of top connection,Circular passage is formed between outer wall and the inner wall of top connection on valve bonnet on the communication groove,The liquid stream in valve bonnet is set to flow away through the circular passage by the communication groove,Sealing element is installed between top connection and valve seat,Valve seat is connected to the lower part of top connection by level pressure pin,Level pressure pin is under sealing element,The top of lower contact and the lower thread of top connection connect.
Description
Technical field
The utility model is the device when operations such as mud, well-flushing are replaced in oil field, and being one kind prevents mud from being sprayed from oil pipe
Pressure testing device.
Background technology
When oil field is for operations such as mud, well-flushings, for convenience to oil pipe pressure test, ball-and-seat is mounted in the lower part of tubing string,
May also the major diameters tool such as tripping in gauguste cutter, pipeline scraper, these major diameter tools it exist together for when the operations such as mud, well-flushing
Tripping in piston is equivalent in well when tripping in, when go into the well speed when, will in the formation pressure difference up and down of major diameter tool,
The low pressure of major diameter tool is higher than upper pressure, and well liquid will be pushed into oil by the high pressure of major diameter tool lower portion through ball-and-seat
In pipe, after making the pressure increase to a certain extent in oil pipe, well liquid when tubing string at the fast speed（Mud）It will be from the upper of tubing string
End is ejected into ground.After this problem occurs, on the one hand make job execution inconvenient, the well liquid of eruption（Mud）Work can be scattering into
It with industry worker, adds heavily to the difficulty of the work, reduces working efficiency, can also occur because of the wet and slippery initiation operating worker safety accident in ground；
On the other hand well site can be polluted, causes environmental pollution.
Invention content
The purpose of this utility model is a kind of pressure testing device for preventing mud from being sprayed from oil pipe of design, is overcome above-mentioned
Problem, make its it is lower for mud, Flushing tubular column when, well liquid will not be sprayed from the upper end of tubing string, raising working efficiency, avoid sending out
Raw environmental pollution.
What the purpose of this utility model was realized in：Head, valve bonnet, pressure spring, valve are adjusted including top connection, spring
Ball, sealing element, valve seat, level pressure pin, lower contact, communication groove is provided on valve bonnet, and spring adjusts the external screw thread and valve bonnet of head lower part
The internal thread on top connects, and pressure spring, valve ball are placed in valve bonnet, and the top screw thread of valve seat and the lower thread of valve bonnet connect
Connect, junction keep sealing, valve ball diameter be more than valve seat aperture, the valve port fitted seal of valve ball and valve seat, pressure spring
Upper surface withstands on spring and adjusts on the lower face of head, and pressure spring pushes down valve ball, and spring adjusts head, valve bonnet, pressure spring, valve
Ball, valve seat are placed in after being assembled integrally in the lower part of top connection, the outer wall on the communication groove and top connection on valve bonnet
Inner wall between form circular passage, so that the liquid stream in valve bonnet is flowed away through the circular passage by the communication groove,
Sealing element is installed, sealing element seals the gap between top connection and valve seat, and valve seat is connected by level pressure pin between top connection and valve seat
It is connected on the lower part of top connection, level pressure pin is under sealing element, and the top of lower contact and the lower thread of top connection connect.
The lower part of valve seat has linked hole, the outer diameter of valve seat to be more than the internal diameter of lower contact lower part, and backwardness can connect by under under valve seat
The shoulder of head lower part blocks, and after valve seat whereabouts is blocked by the shoulder of lower contact lower part, it is downward that liquid stream can pass through the linked hole
Flowing.
The utility model has the beneficial effects that：Head is adjusted by torsional spring, pressure spring can be adjusted and push down valve ball
Pressing force makes valve ball need scheduled pressure that could open, and is generated when going into the well with the work of the major diameters such as gauguste cutter, pipeline scraper
When piston effect, the high pressure liquid stream of valve ball lower part（Mud）Valve ball will not be opened to flow up, therefore, the utility model replaces under
When mud, Flushing tubular column, well liquid will not be sprayed from the upper end of tubing string, eliminated because piston effect is led to the problem of, made its work
Work efficiency is high for industry, and environmental pollution will not occur, and well site ground will not be wet and slippery, will not cause operating worker safety accident, valve ball
It falls on valve seat, tubing string is in closed state, can ensure that each component sealing on tubing string can to the tubing string degree pressure on it
It leans on, job success ratio can be improved, there is significant economic benefit and social benefit.
Description of the drawings
Attached drawing 1 is the installation diagram of the utility model embodiment.
Specific implementation mode
1 pair of the embodiments of the present invention illustrates below in conjunction with the accompanying drawings.
As shown in Figure 1, the embodiments of the present invention include top connection 1, spring adjust head 2, valve bonnet 3, pressure spring 4,
Valve ball 6, sealing element 7, valve seat 8, level pressure pin 9, lower contact 11, communication groove 5 is provided on valve bonnet 3, and spring adjusts the outer of 2 lower part of head
Screw thread is connect with the internal thread on 3 top of valve bonnet, and pressure spring 4, valve ball 6 are placed in valve bonnet 3, the top screw thread and valve of valve seat 8
The lower thread connection of cover 3, junction keep sealing, 6 diameter of valve ball to be more than the aperture of valve seat 8, the valve port of valve ball 6 and valve seat 8
Fitted seal, the upper surface of pressure spring 4 withstand on spring and adjust on the lower face of head 2, and pressure spring 4 pushes down valve ball 6, spring tune
Section header 2, valve bonnet 3, pressure spring 4, valve ball 6, valve seat 8 are placed in after being assembled integrally in the lower part of top connection 1, institute on valve bonnet 3
Circular passage 12 is formed between the outer wall on communication groove 5 stated and the inner wall of top connection 1, makes the liquid stream in valve bonnet 3（Mud）
It can be flowed away through the circular passage 12 by the communication groove 5, sealing element 7 be installed between top connection 1 and valve seat 8（Sealing
Part 7 is mounted in the annular handle slot on 8 outer wall of valve seat）, sealing element 7 seals the gap between top connection 1 and valve seat 8, valve seat 8 by
Level pressure pin 9 is connected to the lower part of top connection 1, and level pressure pin 9 is under sealing element 7, top and the top connection 1 of lower contact 11
Lower thread connection.
The further measure of the utility model is that the lower part of valve seat 8 has linked hole 10, the outer diameter of valve seat 8 to be more than lower contact
The internal diameter of 11 lower parts, 8 times backwardnesss of valve seat can be blocked by the shoulder of 11 lower part of lower contact, and valve seat 8 falls by 11 lower part of lower contact
After shoulder blocks, liquid stream（Mud）It can flow downward by the linked hole 10.
After the utility model is gone into the well with gauguste cutter, pipeline scraper, ability when 6 low pressure of valve ball is higher than predetermined value than upper pressure
It can open, predetermined value is set as being more than the oil jacket pressure pressure difference that piston effect generates when going into the well, so, blowout will not occur when going into the well.
The liquid stream of tubing string G.I.H discharge（Mud）It is overflowed, will not be sprayed from tubing string top, well head by oil jacket annular space
Operation safe ready prevents mud contamination well head.The utility model under gauguste cutter, pipeline scraper to may be implemented behind shaft bottom
Reacting cycle well-flushing just suppresses 20MPa for mud, after well-flushing in tubing string, to tubing string on the utility model and each
Component pressure testing verifies the leakproofness of all parts and tubing string, after testing envelope, then by pressure rise to 22MPa or more, makes level pressure
Pin 9 is interrupted, and spring adjusts head 2, valve bonnet 3, pressure spring 4, valve ball 6, valve seat 8 and falls by the shoulder gear of 11 lower part of lower contact
Firmly, and channel is formed, when lift pipe string, the liquid stream on the utility model is not mentioned on ground.
Claims (2)
1. a kind of pressure testing device for preventing mud from being sprayed from oil pipe, including top connection（1）, spring adjust head（2）, valve bonnet（3）, adjust
Pressing spring（4）, valve ball（6）, sealing element（7）, valve seat（8）, level pressure pin（9）, lower contact（11）, it is characterized in that：Valve bonnet（3）On
It is provided with communication groove（5）, spring adjusting head（2）The external screw thread and valve bonnet of lower part（3）The internal thread on top connects, pressure spring（4）、
Valve ball（6）It is placed on valve bonnet（3）It is interior, valve seat（8）Top screw thread and valve bonnet（3）Lower thread connection, junction keep it is close
Envelope, valve ball（6）Diameter is more than valve seat（8）Aperture, valve ball（6）With valve seat（8）Valve port fitted seal, pressure spring（4）'s
Upper surface withstands on spring and adjusts head（2）Lower face on, pressure spring（4）Push down valve ball（6）, spring adjusting head（2）, valve bonnet
（3）, pressure spring（4）, valve ball（6）, valve seat（8）Top connection is placed in after being assembled integrally（1）Lower part in, valve bonnet（3）On
The communication groove（5）On outer wall and top connection（1）Inner wall between form circular passage（12）, make valve bonnet（3）Interior
Liquid stream can pass through the communication groove（5）Through the circular passage（12）It flows away, top connection（1）With valve seat（8）Between install
Sealing element（7）, sealing element（7）Seal top connection（1）With valve seat（8）Between gap, valve seat（8）By level pressure pin（9）Connection
In top connection（1）Lower part, level pressure pin（9）In sealing element（7）Under, lower contact（11）Top and top connection（1）'s
Lower thread connects.
2. a kind of pressure testing device for preventing mud from being sprayed from oil pipe according to claim 1, it is characterized in that：Valve seat（8）'s
Linked hole is arranged at lower part（10）, valve seat（8）Outer diameter be more than lower contact（11）The internal diameter of lower part, valve seat（8）Lower backwardness can connect by under
Head（11）The shoulder of lower part blocks, valve seat（8）It falls by lower contact（11）After the shoulder of lower part blocks, liquid stream can pass through described
Linked hole（10）It flows downward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820108998.0U CN207813531U (en) | 2018-01-23 | 2018-01-23 | A kind of pressure testing device for preventing mud from being sprayed from oil pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820108998.0U CN207813531U (en) | 2018-01-23 | 2018-01-23 | A kind of pressure testing device for preventing mud from being sprayed from oil pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207813531U true CN207813531U (en) | 2018-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820108998.0U Active CN207813531U (en) | 2018-01-23 | 2018-01-23 | A kind of pressure testing device for preventing mud from being sprayed from oil pipe |
Country Status (1)
| Country | Link |
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| CN (1) | CN207813531U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108086932A (en) * | 2018-01-23 | 2018-05-29 | 东营百华石油技术开发有限公司 | A kind of pressure testing device for preventing mud from being sprayed from oil pipe |
-
2018
- 2018-01-23 CN CN201820108998.0U patent/CN207813531U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108086932A (en) * | 2018-01-23 | 2018-05-29 | 东营百华石油技术开发有限公司 | A kind of pressure testing device for preventing mud from being sprayed from oil pipe |
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