CN209244539U - The pressure text head of continuous cyclic drilling by-passing valve - Google Patents
The pressure text head of continuous cyclic drilling by-passing valve Download PDFInfo
- Publication number
- CN209244539U CN209244539U CN201822131189.4U CN201822131189U CN209244539U CN 209244539 U CN209244539 U CN 209244539U CN 201822131189 U CN201822131189 U CN 201822131189U CN 209244539 U CN209244539 U CN 209244539U
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- segment
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- valve
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Abstract
The utility model discloses a kind of pressure text heads of continuous cyclic drilling by-passing valve, are mounted on the valve seat of the by-passing valve of continuous circulating sub, and the valve plate of the bypassed valve of lower end energy controls opening and closing；It include: ontology, bolt, spring and nut；For ontology along being axially arranged with through-hole, through-hole is divided into first segment, second segment and third section from top to bottom, and first segment is cylindrical or prism-shaped, uses hole for tool；The diameter of second segment is less than third section；Bolt is mounted in through-hole, and the head is stuck in the junction of first segment and second segment, and screw rod passes through second segment and enters third section；And gap is formed between the head of bolt and the side wall of first segment；Spring is mounted in the third section of through-hole, is covered in the outside of the screw rod of bolt；Nut is screwed onto the lower end of bolt.The pressure testing header structure is simple, and part is few, the pressure testing function of simple and fast realization continuous cyclic drilling by-passing valve.
Description
Technical field
The utility model relates to oil drilling equipment fields, in particular to a kind of continuous cyclic drilling by-passing valve
Pressure text head.
Background technique
Continuous cyclic drilling, which can be realized, to make up a joint, column and continues to inject into drill string by bypass line when making a trip
Drilling circulation medium maintains constant drilling circulation discharge capacity and equal yield density, prevent from unloading single or column when stop circulation drawing
The generation of the accidents complexity such as cave-in, overflow, the sand setting bit freezing risen, and the key for establishing bypass line is continuous circulating sub
On by-passing valve, the sealing quality of by-passing valve directly affects whether continuous circulation goes on smoothly and the safety of construction personnel is asked
Topic.When construction, after continuous circulating sub is sitting in well head, the valve plug on the outside of by-passing valve, i.e. pressure text head are removed, then connecting bypass pipe
Line.If by-passing valve leaks, and dismantles valve plug rashly, it will damaged to construction personnel.
CN 201210561458.5 gives a kind of valve plug structure of by-passing valve, is nested inside with a kind of spool and unloads
Pressure valve, structure is complex, and small part is more, and the loss of small part is easily led in construction or bears vibration etc. for a long time in underground
Dynamic load effect and fall off and fall well.
CN 201320567645.4 gives the valve plug structure of another by-passing valve, though there is retaining ring to prevent small part
Fall off, but L-type pressure relief vent difficulty of processing is big, and valve plug leading portion aperture has what the solid particle contained by drilling fluid blocked
May, to not have the effect of the pressure testing before dismantling valve plug.
Summary of the invention
In order to solve the above-mentioned technical problem, the utility model provides a kind of pressure text head of continuous cyclic drilling by-passing valve,
Its structure is simple, and part is few, the pressure testing function of simple and fast realization continuous cyclic drilling by-passing valve.
For this purpose, the technical solution of the utility model is as follows:
A kind of pressure text head of continuous cyclic drilling by-passing valve, is mounted on the valve seat of the by-passing valve of continuous circulating sub,
The valve plate of the bypassed valve of lower end energy controls opening and closing；It include: ontology, bolt, spring and nut；
For the ontology along through-hole is axially arranged with, the through-hole is divided into first segment, second segment and third section from top to bottom, described
First segment is cylindrical or prism-shaped, uses hole for tool；The diameter of the second segment is less than third section；
The bolt is mounted in the through-hole, and the head is stuck in the junction of first segment and second segment, and screw rod passes through the
Two sections enter third section；And gap is formed between the head of the bolt and the side wall of the first segment；
The spring is mounted in the third section of the through-hole, is covered in the outside of the screw rod of the bolt；
The nut is screwed onto the lower end of the bolt.
Further, the first segment of the through-hole is in hexa-prism or quadrangular shape.
Further, the spring is volute spring.
Further, the cross section that the bolt head is is hexagon, four side property, triangle, pentagon, heptagon or eight
Side shape.
The product has the following beneficial effects:
(1) the pressure testing header structure is simple, will not fall off under the bad working environments of underground and fall well.
(2) on the inside of the pressure text head when no pressure, ontology intermediate channel is closed, the intrusion of external drilling fluid is prevented.
(3) when occurring seal failure between valve seat and valve plate, pressure text head is intermittent to be released stress, and in tooling hole to
Surrounding injection, it is highly-safe.
(4) pressure size can be judged according to intermittent pressure release frequency.
Detailed description of the invention
Fig. 1 is the sectional view of the pressure text head of continuous cyclic drilling by-passing valve provided by the utility model；
Fig. 2 is the use state sectional view of the pressure text head of continuous cyclic drilling by-passing valve provided by the utility model.
Specific embodiment
The technical solution of the utility model is described in detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, a kind of pressure text head of continuous cyclic drilling by-passing valve, is mounted on the by-passing valve of continuous circulating sub
Valve seat 6 on, lower end can the valve plate 7 of bypassed valve control opening and closing；It include: ontology 1, bolt 2, spring 3 and nut 4；
Ontology is divided into first segment, second segment and third section along through-hole, through-hole is axially arranged with from top to bottom, and first segment is in cylinder
Shape or prism-shaped use hole for tool；The diameter of second segment is less than third section；
Bolt 2 is mounted in through-hole, and the head is stuck in the junction of first segment and second segment, and screw rod enters across second segment
Third section；And gap is formed between the head of bolt and the side wall of first segment；
Spring 3 is mounted in the third section of through-hole, is covered in the outside of the screw rod of bolt 2；It is preferred that spring 3 is volute spring；
Nut 4 is screwed onto the lower end of bolt 2.
As the embodiments of the present invention, the first segment of through-hole is in hexa-prism or quadrangular shape.
As the embodiments of the present invention, the cross section that 2 head of bolt can be hexagon, four side property, triangle,
Pentagon, heptagon or octagon.
As shown in Fig. 2, lower end can be other in use, pressure text head is mounted on the valve seat 6 of the by-passing valve of continuous circulating sub
The valve plate 7 of port valve controls opening and closing；When good seal between valve seat 6 and valve plate 7, Fluid pressure inside valve plate 7 will not be into
Enter between valve plate 7 and pressure text head, bolt 2 is tightly pressed against on the step of pressure text head ontology 1 under the effect of spring 3, prevents annular space
Drilling fluid enters inside pressure text head, ensure that cleaning inside.
When 7 seal failure of valve seat 6 and valve plate, the Fluid pressure inside valve plate 7 will enter valve plate 7 and pressure text head it
Between, which acts on bolt 2, and 4 compressed spring 3 of nut that bolt 2 is connected through a screw thread moves outward, makes in pressure text head
Side is connected to the outside where tooling hole 5, and pressure text head fluid inside flows outward, and under the obstruction of bolt 2, fluid is in tooling hole
It is sprayed around in 5, with the release of fluid, outside pressure difference becomes smaller in bolt 2, and bolt 2 resets under the effect of spring 3, closes
Close fluid outlet passage.It is increased with 2 inside pressure of rear bolt, pushes bolt 2 to be displaced outwardly again, pressure release, reset, it is reciprocal to transport
It is dynamic.
It is inserted into tooling hole 5 using dismantling device, pressure text head is mounted in by-passing valve, enter well with entire tool.When
When needing connecting bypass pipeline, check bolt 2 whether can intermittence release stress, if without if can be used extracting tool be inserted into work
Have and dismantles pressure text head in hole 5；If there is pressure discharges, can make according to frequency is released stress to determine whether terminating continuous circulation
Then industry is handled.
Claims (4)
1. a kind of pressure text head of continuous cyclic drilling by-passing valve, is mounted on the valve seat (6) of the by-passing valve of continuous circulating sub,
The valve plate (7) of the bypassed valve of lower end energy controls opening and closing；It is characterised by comprising: ontology (1), bolt (2), spring (3) and nut
(4)；
Along being axially arranged with through-hole, the through-hole is divided into first segment, second segment and third section from top to bottom for the ontology, and described first
The cylindrical or prism-shaped of section uses hole for tool；The diameter of the second segment is less than third section；
The bolt (2) is mounted in the through-hole, and the head is stuck in the junction of first segment and second segment, and screw rod passes through second
Section enters third section；And gap is formed between the head of the bolt and the side wall of the first segment；
The spring (3) is mounted in the third section of the through-hole, covers in the outside of the screw rod of the bolt (2)；
The nut (4) is screwed onto the lower end of the bolt (2).
2. pressure text head as described in claim 1, it is characterised in that: the first segment of the through-hole is in hexa-prism or quadrangular shape.
3. pressure text head as described in claim 1, it is characterised in that: the spring (3) is volute spring.
4. pressure text head as described in claim 1, it is characterised in that: the cross section that bolt (2) head is is hexagon, four sides
Property, triangle, pentagon, heptagon or octagon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822131189.4U CN209244539U (en) | 2018-12-18 | 2018-12-18 | The pressure text head of continuous cyclic drilling by-passing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822131189.4U CN209244539U (en) | 2018-12-18 | 2018-12-18 | The pressure text head of continuous cyclic drilling by-passing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209244539U true CN209244539U (en) | 2019-08-13 |
Family
ID=67533445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822131189.4U Expired - Fee Related CN209244539U (en) | 2018-12-18 | 2018-12-18 | The pressure text head of continuous cyclic drilling by-passing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209244539U (en) |
-
2018
- 2018-12-18 CN CN201822131189.4U patent/CN209244539U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190813 Termination date: 20201218 |