CN204327047U - Deep-sea oil gas well multifunctional circulation valve - Google Patents
Deep-sea oil gas well multifunctional circulation valve Download PDFInfo
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- CN204327047U CN204327047U CN201420742011.2U CN201420742011U CN204327047U CN 204327047 U CN204327047 U CN 204327047U CN 201420742011 U CN201420742011 U CN 201420742011U CN 204327047 U CN204327047 U CN 204327047U
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Abstract
The utility model discloses a kind of deep-sea oil gas well multifunctional circulation valve, it is connected between drilling rod, include superstructure, central structure and substructure, described central structure is flexibly connected with superstructure and substructure respectively, first passage is formed in described substructure, described first passage is communicated with bottom oil layer, described central structure is formed with second channel, described first passage is communicated with second channel, when described central structure and superstructure stagger, the inner space of described first passage, second channel and drilling rod forms circulation canal.The utility model structure is simple, breakdown action flexibility and reliability, and be designed with independently bypass circulation canal, open Posterior circle passage large, and latus rectum is large in it, the requirement that the setting steel ball of major diameter passes through can be met completely, any impact is not produced on other downhole tool and runner, and can activated in advance be prevented when suppressing setting.
Description
Technical field
The utility model relates to petroleum works field, particularly relates to a kind of deep-sea oil gas well multifunctional circulation valve.
Background technology
Relative to conventional well operation, in deep-sea oil gas well, flow string, the sand control pipe of feeding have a lot of requirement when operation: depth of setting is large, operation is ageing requires high, high to environmental requirement, does not allow the full liquid lift pipe string of drilling rod etc.
When carrying out setting to the top packer on flow string, sand control pipe, setting steel ball need be dropped in drilling rod, drilling rod and zonal isolation, drilling rod and casing off after pitching.Be honored as a queen if present and need drilling rod and combination of zones or require that drilling rod is communicated with sleeve pipe when lift pipe string, then have the following disadvantages:
1, after setting steel ball drops into, setting steel ball, by shutoff, must wash out, add activity duration and workover cost by the communicating passage on drilling rod and stratum;
2, after setting steel ball drops into, setting steel ball, by shutoff, must wash out, add activity duration and workover cost by the communicating passage of drilling rod and sleeve pipe, and in drilling rod during full liquid, lift pipe string easily causes constructional difficulties, pumping formation equivalent risk;
3, wash ball operation if do not carried out, then need by setting up circulation canal between setting steel ball and the annular space sending into tubing string, this scheme circulation canal is little, and operational discharge capacity is limited.
Utility model content
Technical problem to be solved in the utility model is, a kind of deep water hydrocarbon well multifunctional circulation valve is provided, for the feeding tubing string of deep-sea oil gas well provides setting passage, suppress after activating multifunctional circulation valve, set up circulation canal by bypass passageways and bottom oil layer, the object of earial drainage can be reached when lift pipe string.
In order to solve the problems of the technologies described above, the utility model provides a kind of deep-sea oil gas well multifunctional circulation valve, it is connected between drilling rod, include superstructure, central structure and substructure, described central structure is flexibly connected with superstructure and substructure respectively, first passage is formed in described substructure, described first passage is communicated with bottom oil layer, described central structure is formed with second channel, described first passage is communicated with second channel, when described central structure and superstructure stagger, described first passage, the inner space of second channel and drilling rod forms circulation canal.
Further, described superstructure includes top connection, active joint and seal nipple, and the top of described top connection connects into well equipment, and the bottom of described top connection is connected with the top of active joint, the top of the bottom connection sealing joint of described active joint.
Further, the inner side of described top connection is provided with interior suspension step, and the arranged outside of described active joint has outer suspension step, and described interior suspension step coordinates fixing with outer suspension step.
Further, described interior suspension step is provided with inner sealing surface, and the arranged outside of described active joint has sealing ring, described sealing ring and inner sealing surface fitted seal.
Further, be also provided with tightening pin hole on the top of described seal nipple, in described tightening pin hole, be equipped with tightening pin.
Further, described central structure includes Inner eycle joint, outer circulation joint and slip ball seat, described seal nipple is set between Inner eycle joint and outer circulation joint, and the bottom of described Inner eycle joint is connected with slip ball seat, and the outside of described seal nipple is connected with outer circulation joint.
Further, described Inner eycle joint is provided with outer suspension step, described seal nipple is provided with interior suspension step, the interior suspension step of described seal nipple coordinates fixing with the outer suspension step of Inner eycle joint, be provided with pin hole at the contact position of described Inner eycle joint and slip ball seat, in described pin hole, shear pin be installed.
Further, described slip ball seat outside is designed with two groups of sealing rings, sealing ring described in two groups respectively with the inner sealing surface of Inner eycle joint and the inner sealing surface fitted seal of outer circulation joint, be provided with second channel in described slip ball seat.
Further, described substructure includes lower contact, connection bottom, the bottom completion tool of described lower contact, and the outside of described lower contact is connected with outer circulation joint, and the inner side of lower contact and slip ball seat are by sealing ring fitted seal.
Further, be also provided with suspension step inside lower contact, slip ball seat descending being positioned, on the suspension step of lower contact, is provided with first passage in described lower contact, and described first passage is communicated with bottom oil layer with second channel respectively.
The utility model has following beneficial effect: structure is simple, breakdown action flexibility and reliability, and be designed with independently bypass circulation canal, open Posterior circle passage large, and latus rectum is large in it, the requirement that the setting steel ball of major diameter passes through can be met completely, any impact is not produced on other downhole tool and runner, and can activated in advance be prevented when suppressing setting.
Accompanying drawing explanation
Fig. 1 is the structural representation of deep-sea oil gas well multifunctional circulation valve seat envelope state;
Fig. 2 is the structural representation of deep-sea oil gas well multifunctional circulation valve state of activation.
In figure, in figure: 1, top connection, 2, active joint, 3, tightening pin, 4, seal nipple, 5, top seal ring, 6, Inner eycle joint, 7, shear pin, 8, outer circulation joint, 9, slip ball seat, 10, lower contact, 11, lower seal rings.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, and to make those skilled in the art better can understand the utility model being implemented, but illustrated embodiment is not as to restriction of the present utility model.
As shown in Figure 1 and Figure 2, deep-sea oil gas well multifunctional circulation valve, it is connected between drilling rod, include superstructure, central structure and substructure, described central structure is flexibly connected with superstructure and substructure respectively, first passage is formed in described substructure, described first passage is communicated with bottom oil layer, described central structure is formed with second channel, described first passage is communicated with second channel, when described central structure and superstructure stagger, the inner space of described first passage, second channel and drilling rod forms circulation canal.
During construction, enter to projected depth under after the utility model is connected with feeding tubing string, setting steel ball is dropped in drilling rod, setting steel ball is by described multifunctional circulation valve, be seated on the setting ball seat of hanging packer, in drilling rod, suppress setting hanging packer, rotate forward after tubing string gives up after testing involution lattice, upper lifting pipe post 2m-5m.
Be honored as a queen if present and need drilling rod to be communicated with oil reservoir or require that when lift pipe string drilling rod is communicated with sleeve pipe, now, drop in drilling rod and shear steel ball, make that central structure is descending to be positioned in substructure, now the utility model is in state of activation, central structure and superstructure stagger a hole and with drilling rod inside be communicated with, the inner space of first passage, second channel and drilling rod forms circulation canal, achieve being communicated with of drilling rod and bottom oil layer or being communicated with of drilling rod and casing annulus, when lift pipe string, liquid automatic drainage in drilling rod can be realized in pit shaft.
Described superstructure includes top connection 1, active joint 2 and seal nipple 4, the top of described top connection 1 connects into well equipment, the bottom of described top connection 1 is connected with the top of active joint 2, the top of the bottom connection sealing joint 4 of described active joint 2, described seal nipple 4 is provided with top seal ring 5.
In order to make the connection between structure more closely with firm, annexation of the present utility model adopts and is spirally connected, namely top connection 1 top is provided with connecting thread and enters well equipment connection with other, the inner side of described top connection 1 is provided with interior suspension step, the arranged outside of described active joint 2 has outer suspension step, described interior suspension step coordinates fixing with outer suspension step, active joint 2 can freely rotate.
In order to the sealing between stiffener, described interior suspension step is provided with inner sealing surface, and the arranged outside of described active joint 2 has sealing ring, described sealing ring and inner sealing surface fitted seal.
Active joint 2 bottom is provided with connecting thread, and described seal nipple 4 top, bottom are all designed with screw thread, and the top screw thread of described seal nipple 4 is connected with the lower thread of active joint 2.In order to prevent the connecting thread between seal nipple 4 and active joint 2 from loosening, the utility model is also provided with tightening pin hole on the top of described seal nipple 4, is equipped with tightening pin 3 in described tightening pin hole.
Described central structure includes Inner eycle joint 6, outer circulation joint 8 and slip ball seat 9, described seal nipple 4 is set between Inner eycle joint 6 and outer circulation joint 9, and be spirally connected with Inner eycle joint 6 and outer circulation joint 9 respectively, the bottom of described Inner eycle joint 6 is connected with slip ball seat 9, and the outside of described seal nipple 4 is connected with outer circulation joint 8.
Described Inner eycle joint 6 is provided with outer suspension step, described seal nipple 4 is provided with interior suspension step, described interior suspension step coordinates fixing with outer suspension step, Inner eycle joint 6 is connected with seal nipple 4, pin hole is provided with the contact position of slip ball seat 9 at described Inner eycle joint 6, in described pin hole, shear pin 7 is installed, in the utility model, Inner eycle joint 6 bottom is designed with 2-8 pin hole, for installing shear pin 7, and Inner eycle joint 6 has 2-6 liquid backflow hole in pin hole upper design.
In order to the sealing between enhanced leaktightness joint 4 and Inner eycle joint 6, the interior suspension step upper design of described seal nipple 4 has inner sealing surface, and Inner eycle joint 6 outside is designed with the inner sealing surface fitted seal of sealing ring and seal nipple 4.
Outer circulation joint 8 top, bottom are all designed with connecting thread, and the top connecting thread of outer circulation joint 8 is connected with the lower thread of seal nipple 4, and outer circulation joint 8 indoor design has inner sealing surface, and bottom connecting thread upper design has 2-6 liquid backflow hole.
Slip ball seat 9 outside is designed with three groups of sealing rings, and respectively at the inner sealing surface fitted seal of the inner sealing surface of Inner eycle joint 6, the inner sealing surface of outer circulation joint 8 and lower contact 10, slip ball seat 9 is designed with second channel.
Described substructure includes lower contact 10, lower contact 10 top, bottom are all designed with connecting thread, the bottom of described lower contact 10 is connected with other instruments and then is communicated with completion tool, completion tool is communicated with bottom oil layer, the top screw thread in the outside of described lower contact 10 is connected with the lower thread of outer circulation joint 8, the inner side of lower contact 10 and slip ball seat 9 are by sealing ring fitted seal, and described lower contact 10 periphery is provided with lower seal rings 11.
Described lower contact 10 is provided with first passage, and lower contact 10 inside is provided with outer suspension step, and when drilling rod is suppressed, after cutting off shear pin 7, slip ball seat 9 is descending is positioned on the interior suspension step of lower contact 10.
The utility model, slip ball seat 9 has two operating positions: set position (Fig. 1), active position (Fig. 2).
Slip ball seat 9 is when set position, and slip ball seat 9 and seal nipple 4 are sealed by sealing ring, can provide and suppress setting air-proof condition.
When needs activate, drop in drilling rod and drop down onto on slip ball seat 9 after shearing steel ball, suppress in drilling rod and cut off shear pin 7, make that slip ball seat 9 is descending to be positioned on the interior suspension step of lower contact 10.Now can set up the communicating passage of drilling rod and sleeve pipe, when lift pipe string, in drilling rod, liquid can leak in pit shaft automatically.
When Specific construction, enter to projected depth under after the utility model is connected with feeding tubing string, the setting steel ball of hanging packer is dropped in drilling rod, setting steel ball is by described multifunctional circulation valve, be seated on the setting ball seat of hanging packer, in drilling rod, suppress setting hanging packer, rotate forward after tubing string gives up after testing involution lattice, upper lifting pipe post 2m-5m.
When needing to activate, drop in drilling rod and shear steel ball, shear steel ball and fall within the top seal face of described slip ball seat 9, suppress in drilling rod and cut off shear pin 7, make that slip ball seat 9 is descending to be positioned on the interior suspension step of lower contact 10, now multifunctional circulation valve is in state of activation.The second channel of slip ball seat 9 is communicated with the first passage of lower contact 10, can realize being communicated with of drilling rod and bottom oil layer, or being communicated with of drilling rod and casing annulus, and in the liquid that can realize drilling rod during lift pipe string, automatic drainage is in pit shaft.
The above embodiment is only for absolutely proving the preferred embodiment that the utility model is lifted, and protection domain of the present utility model is not limited thereto.The equivalent alternative or conversion that those skilled in the art do on the utility model basis, all within protection domain of the present utility model.Protection domain of the present utility model is as the criterion with claims.
Claims (10)
1. a deep-sea oil gas well multifunctional circulation valve, it is connected between drilling rod, it is characterized in that, include superstructure, central structure and substructure, described central structure is flexibly connected with superstructure and substructure respectively, first passage is formed in described substructure, described first passage is communicated with bottom oil layer, described central structure is formed with second channel, described first passage is communicated with second channel, when described central structure and superstructure stagger, the inner space of described first passage, second channel and drilling rod forms circulation canal.
2. deep-sea oil gas well multifunctional circulation valve according to claim 1, it is characterized in that, described superstructure includes top connection, active joint and seal nipple, the top of described top connection connects into well equipment, the bottom of described top connection is connected with the top of active joint, the top of the bottom connection sealing joint of described active joint.
3. deep-sea oil gas well multifunctional circulation valve according to claim 2, is characterized in that, the inner side of described top connection is provided with interior suspension step, and the arranged outside of described active joint has outer suspension step, and described interior suspension step coordinates fixing with outer suspension step.
4. deep-sea oil gas well multifunctional circulation valve according to claim 3, is characterized in that, described interior suspension step is provided with inner sealing surface, and the arranged outside of described active joint has sealing ring, described sealing ring and inner sealing surface fitted seal.
5. deep-sea oil gas well multifunctional circulation valve according to claim 4, is characterized in that, be also provided with tightening pin hole on the top of described seal nipple, be equipped with tightening pin in described tightening pin hole.
6. deep-sea oil gas well multifunctional circulation valve according to claim 5, it is characterized in that, described central structure includes Inner eycle joint, outer circulation joint and slip ball seat, described seal nipple is set between Inner eycle joint and outer circulation joint, the bottom of described Inner eycle joint is connected with slip ball seat, and the outside of described seal nipple is connected with outer circulation joint.
7. deep-sea oil gas well multifunctional circulation valve according to claim 6, it is characterized in that, described Inner eycle joint is provided with outer suspension step, described seal nipple is provided with interior suspension step, the interior suspension step of described seal nipple coordinates fixing with the outer suspension step of Inner eycle joint, be provided with pin hole at the contact position of described Inner eycle joint and slip ball seat, in described pin hole, shear pin be installed.
8. deep-sea oil gas well multifunctional circulation valve according to claim 7, it is characterized in that, described slip ball seat outside is designed with three groups of sealing rings, sealing ring described in three groups respectively with the inner sealing surface fitted seal of the inner sealing surface of Inner eycle joint, the inner sealing surface of outer circulation joint and lower contact, be provided with second channel in described slip ball seat.
9. deep-sea oil gas well multifunctional circulation valve according to claim 8, it is characterized in that, described substructure includes lower contact, connection bottom, the bottom completion tool of described lower contact, the outside of described lower contact is connected with outer circulation joint, and the inner side of lower contact and slip ball seat are by sealing ring fitted seal.
10. deep-sea oil gas well multifunctional circulation valve according to claim 9, it is characterized in that, suspension step is also provided with inside lower contact, slip ball seat is descending to be positioned on the suspension step of lower contact, be provided with first passage in described lower contact, described first passage is communicated with bottom oil layer with second channel respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420742011.2U CN204327047U (en) | 2014-12-02 | 2014-12-02 | Deep-sea oil gas well multifunctional circulation valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420742011.2U CN204327047U (en) | 2014-12-02 | 2014-12-02 | Deep-sea oil gas well multifunctional circulation valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204327047U true CN204327047U (en) | 2015-05-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420742011.2U Withdrawn - After Issue CN204327047U (en) | 2014-12-02 | 2014-12-02 | Deep-sea oil gas well multifunctional circulation valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204327047U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104453779A (en) * | 2014-12-02 | 2015-03-25 | 东营市福利德石油科技开发有限责任公司 | Multifunctional circulating valve for deep sea oil and gas well |
-
2014
- 2014-12-02 CN CN201420742011.2U patent/CN204327047U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104453779A (en) * | 2014-12-02 | 2015-03-25 | 东营市福利德石油科技开发有限责任公司 | Multifunctional circulating valve for deep sea oil and gas well |
| CN104453779B (en) * | 2014-12-02 | 2017-03-29 | 东营市福利德石油科技开发有限责任公司 | Deep-sea oil gas well multifunctional circulation valve |
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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: 20150513 Effective date of abandoning: 20170329 |