CN204402410U - A kind of uninterrupted circulating valve - Google Patents
A kind of uninterrupted circulating valve Download PDFInfo
- Publication number
- CN204402410U CN204402410U CN201420805556.3U CN201420805556U CN204402410U CN 204402410 U CN204402410 U CN 204402410U CN 201420805556 U CN201420805556 U CN 201420805556U CN 204402410 U CN204402410 U CN 204402410U
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- China
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- hole
- spool
- processed
- duct
- valve seat
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- Withdrawn - After Issue
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Abstract
The utility model discloses a kind of uninterrupted circulating valve.Described uninterrupted circulating valve comprises housing, main channel and bypass passageways; Housing is tubular, and top and bottom are processed with screw thread respectively, and be axially processed with through hole A and duct A, radial direction is processed with duct B; Mounting spring seat, spring, spool and valve seat are distinguished from top to bottom in through hole A inside; Spring base axial centre is processed with through hole B, and through hole B external process has axially extending bore C; Be that the circular cone chamfering on conical structure and valve seat top forms cone angle and seals in the middle part of spool.The utility model has the advantages that and have employed ripe one way valve seal form, improve the reliability of uninterrupted circulating valve Fluid Sealing.Continuous circulation during being made up a joint by realization, effectively avoid the borehole pressure fluctuation because the operation that makes up a joint causes, improve hole quality and cleannes, reduce the probability that the challenges such as leakage, well kick and bit freezing occur, reduce nonproductive time, bore to meet and previously cannot bore the stratum reached.
Description
Technical field
The utility model relates to petroleum exploration and development field of tool, particularly relates to the uninterrupted circulating valve in a kind of continuous cyclic drilling.
Background technology
When conventional drilling needs to make up a joint, circulating drilling medium (mud or gas) must be interrupted.Interrupting circulation can produce many to drillng operation adverse influence.Mainly comprise: because stopping circulation time, annular space dynamic pressure drop disappears, and bottom pressure reduces, and causes well kick sometimes; Re-establish circulation time, bottom pressure increases, and may cause leakage.When narrow Density Window operation, these two kinds impacts can be more outstanding.In the High angle section and horizontal drilling of extended reach well, the low limit that landwaste can drop on well forms cutting bed, reduces effective borehole size, increases drill string torque and resistance; In hp-ht well, the solid phase sedimentation in circulatory mediator and the rising of mud temperature can change mud property, and high temperature can make downhole instrument overheated; In under balance pressure drilling, the flowing of gas may produce a unstable annular space; In During Air Drilling, landwaste sinking bit freezing and shaft bottom hydrops cause stratum immersion to be collapsed.These adverse effects easily cause the drilling complexity situations such as wellbore instability, cave-in, bit freezing, drilling tool failure, overflow or leakage.Therefore, how to keep the uninterrupted circulation of drilling medium when making up a joint, thus effectively avoid above problem, become the significant technology issues that current drilling engineering is urgently to be resolved hurrily.
Certainly, uninterrupted circulating valve described in the utility model, is not limited to the drilling applications described in above background technology, and it is also applicable to other field needing in petroleum exploration and development to keep continuous circulation.
Summary of the invention
The purpose of this utility model is exactly to overcome prior art Problems existing, provides a kind of uninterrupted circulating valve, the continuous circulation of drilling medium during to realize making up a joint.
For achieving the above object, the utility model adopts following design scheme:
A kind of uninterrupted circulating valve comprises housing, main channel and bypass passageways.Housing is tubular, and top and bottom are processed with screw thread respectively, and be axially processed with through hole A and duct A, radial direction is processed with duct B; Mounting spring seat, spring, spool and valve seat are distinguished from top to bottom in through hole A inside; Spring base is in the form of annular discs, and axial centre is processed with through hole B, and through hole B external process has axially extending bore C; Spring fitting, between spring base and spool, applies spring thrust to spool; Spool top is columned spool guide rod, and spool guide rod inserts through hole B, slip of leading up and down in through hole B; Be that the circular cone chamfering on conical structure and valve seat top forms cone angle and seals in the middle part of spool; Valve seat is cylindrical structure, and be axially processed with blind hole, blind hole upper end is processed with the circular cone chamfering with seal spool, and radial direction is processed with duct C; The upper space of through hole A, the through hole C of spring base, the space between spool with spring base, duct A are communicated with the lower space of through hole A the main channel forming uninterrupted circulating valve successively; Duct B, duct C, blind hole, the space between spool with spring base, duct A are communicated with the lower space of through hole A the bypass passageways forming uninterrupted circulating valve successively.
Preferably described spring base and valve seat are all be connected and fixed by screw thread and housing; Between the through hole A of valve seat outer rim and housing, sealing ring is installed; The sealing surface cone angle of described spool and valve seat is 30 °-90 °, is preferably 30 °.
The utility model has the advantages that and have employed ripe one way valve seal form, improve the reliability of uninterrupted circulating valve Fluid Sealing.Continuous circulation during being made up a joint by realization, effectively avoid the borehole pressure fluctuation because the operation that makes up a joint causes, improve hole quality and cleannes, reduce the probability that the challenges such as leakage, well kick and bit freezing occur, reduce nonproductive time, bore to meet and previously cannot bore the stratum reached.
Accompanying drawing explanation
Fig. 1 is a kind of uninterrupted circulating valve general structure schematic diagram (drilling medium flows in main channel) of the utility model.
Fig. 2 is a kind of uninterrupted circulating valve general structure schematic diagram (drilling medium flows in bypass passageways) of the utility model.
Fig. 3 is the sectional drawing in AA cross section in a kind of uninterrupted circulating valve general structure schematic diagram of the utility model.
Fig. 4 is the schematic diagram of spring base in a kind of uninterrupted circulating valve of the utility model.
In figure: 1. housing, 2. spring base, 3. spring, 4. spool, 5. valve seat, 6. duct A, 7. sealing ring, 8. blind hole, 9. duct C, 10. duct B, 11. through hole C, 12. through hole A, 13. through hole B.
Detailed description of the invention
Be further described below in conjunction with accompanying drawing 1, accompanying drawing 2, accompanying drawing 3 and accompanying drawing 4 pairs of the utility model:
A kind of uninterrupted circulating valve comprises housing, main channel and bypass passageways.Housing 1 is in tubular, and upper end is processed with male thread and lower end is processed with box thread, and be axially processed with through hole A12 and duct A6, radial direction is processed with duct B10; Mounting spring seat 2, spring 3, spool 4 and valve seat 5 are distinguished from top to bottom in through hole A12 inside; Spring base 2 is in the form of annular discs, and axial centre is processed with through hole B13, and through hole B13 external process has axially extending bore C11; Spring 3 is arranged between spring base 2 and spool 4, applies spring thrust to spool 4; Spool 4 top is columned spool guide rod, and spool guide rod inserts through hole B13, slip of leading up and down in through hole B13; Be that the circular cone chamfering on conical structure and valve seat 5 top forms cone angle and seals in the middle part of spool 4; Valve seat 5 is cylindrical structure, and be axially processed with blind hole 8, blind hole 8 upper end is processed with the circular cone chamfering sealed with spool 4, and radial direction is processed with duct C9; Between the through hole A12 of valve seat 5 outer rim and housing 1, sealing ring 7 is installed; The upper space of through hole A12, the through hole C11 of spring base 2, the space between spool 4 with spring base 2, duct A6 are communicated with the lower space of through hole A12 the main channel forming uninterrupted circulating valve successively; Duct B10, duct C9, blind hole 8, the space between spool 4 with spring base 2, duct A6 are communicated with the lower space of through hole A12 the bypass passageways forming uninterrupted circulating valve successively.Spring base 2 and valve seat 5 are all be connected and fixed by screw thread and housing 1; Spool 4 is 30 ° ~ 90 ° with the sealing surface cone angle of valve seat 5, and this embodiment is preferably 30 °.
In on-the-spot application process, connect a drilling tool valve on the top of uninterrupted circulating valve, this drilling tool valve can be drilling tool check valve or plug valve, and this embodiment is selected to connect plug valve.As shown in Figure 1, in oil drilling drilling process, drilling medium is through plug valve (open mode), then the main channel (drilling medium is successively through the lower space of the through hole C11 of the upper space of through hole A12, spring base 2, space between spool 4 and spring base 2, duct A6 and through hole A12) of uninterrupted circulating valve is arrived, then bottomhole assembly is flowed into (now, spool 4 contacts with valve seat 5 and seals, and the duct B10 of housing 1 flows out without fluid); As shown in Figure 2, make up a joint period, by uninterrupted circulating valve control manifold, drilling medium is imported the bypass passageways of uninterrupted circulating valve, and cut-out tap valve gradually, drilling medium is by bypass passageways (lower space of duct B10, duct C9, blind hole 8, space between spool 4 and spring base 2, duct A6 and through hole A12), then flow into bottomhole assembly, thus realize the continuous circulation operation of drilling medium in drilling well overall process.
Claims (3)
1. a uninterrupted circulating valve, is characterized in that: housing (1) is in tubular, and top and bottom are processed with screw thread respectively, and be axially processed with through hole A (12) and duct A (6), radial direction is processed with duct B (10); Mounting spring seat (2), spring (3), spool (4) and valve seat (5) are distinguished from top to bottom in through hole A (12) inside; Spring base (2) is in the form of annular discs, and axial centre is processed with through hole B (13), and through hole B (13) external process has axially extending bore C (11); Spring (3) is arranged between spring base (2) and spool (4); Spool (4) top is columned spool guide rod, and spool guide rod inserts through hole B (13), slip of leading up and down in through hole B (13); Spool (4) middle part is conical structure and forms cone angle with the circular cone chamfering on valve seat (5) top to seal; Valve seat (5) is cylindrical structure, and be axially processed with blind hole (8), blind hole (8) upper end is processed with the circular cone chamfering sealed with spool (4), and radial direction is processed with duct C (9); The upper space of through hole A (12), the through hole C (11) of spring base (2), the space between spool (4) with spring base (2), duct A (6) are communicated with the lower space of through hole A (12) main channel forming uninterrupted circulating valve successively; Duct B (10), duct C (9), blind hole (8), the space between spool (4) with spring base (2), duct A (6) are communicated with the lower space of through hole A (12) bypass passageways forming uninterrupted circulating valve successively.
2. uninterrupted circulating valve according to claim 1, it is characterized in that, described spring base (2) and valve seat (5) are all be connected and fixed by screw thread and housing (1), install sealing ring (7) between the through hole A (12) of valve seat (5) outer rim and housing (1).
3. uninterrupted circulating valve according to claim 1 and 2, is characterized in that, described spool (4) is 30 °-90 ° with the sealing surface cone angle of valve seat (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420805556.3U CN204402410U (en) | 2014-12-19 | 2014-12-19 | A kind of uninterrupted circulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420805556.3U CN204402410U (en) | 2014-12-19 | 2014-12-19 | A kind of uninterrupted circulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204402410U true CN204402410U (en) | 2015-06-17 |
Family
ID=53426283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420805556.3U Withdrawn - After Issue CN204402410U (en) | 2014-12-19 | 2014-12-19 | A kind of uninterrupted circulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204402410U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105756593A (en) * | 2014-12-19 | 2016-07-13 | 中石化胜利石油工程有限公司钻井工艺研究院 | Uninterrupted circulating valve |
| CN111894499A (en) * | 2020-09-14 | 2020-11-06 | 成都西南石大石油工程技术有限公司 | Reverse circulation drilling system |
-
2014
- 2014-12-19 CN CN201420805556.3U patent/CN204402410U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105756593A (en) * | 2014-12-19 | 2016-07-13 | 中石化胜利石油工程有限公司钻井工艺研究院 | Uninterrupted circulating valve |
| CN105756593B (en) * | 2014-12-19 | 2019-03-08 | 中石化胜利石油工程有限公司钻井工艺研究院 | A kind of uninterrupted circulating valve |
| CN111894499A (en) * | 2020-09-14 | 2020-11-06 | 成都西南石大石油工程技术有限公司 | Reverse circulation drilling system |
| CN111894499B (en) * | 2020-09-14 | 2024-06-11 | 成都西南石大石油工程技术有限公司 | Reverse circulation drilling system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150617 Effective date of abandoning: 20190308 |