CN204225811U - A kind of quick-replaceable rig tool - Google Patents
A kind of quick-replaceable rig tool Download PDFInfo
- Publication number
- CN204225811U CN204225811U CN201420702091.9U CN201420702091U CN204225811U CN 204225811 U CN204225811 U CN 204225811U CN 201420702091 U CN201420702091 U CN 201420702091U CN 204225811 U CN204225811 U CN 204225811U
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- CN
- China
- Prior art keywords
- pipe
- interior
- sealed outer
- outer pipe
- guan shangjie
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of quick-replaceable rig tool, comprise sealed outer pipe, insert pipe in envelope, in described slotting envelope, pipe saves under comprising interior Guan Shangjie, interior pipe box cupling, interior pipe, and described interior Guan Shangjie is connected by interior pipe box cupling with saving under interior pipe, and described interior Guan Shangjie inserts and is enclosed in sealed outer pipe inside.Described interior Guan Shangjie outer wall offers at least two seals groove, installs sealing ring, be sealed in the inwall of sealed outer pipe in groove.The external diameter of described interior Guan Shangjie is identical with the internal diameter basic size of sealed outer pipe, and on interior pipe in energy-conservation insertion sealed outer pipe, both rely on identical basic size and sealing ring to form sealing.The withstand voltage 70MPa of this slotting seal apparatus.Under described interior pipe, joint is tubing nipple, and two ends all arrange screw thread, and described interior Guan Shangjie lower end arranges screw thread, and interior pipe box cupling arranges internal thread.Screw thread is offered in described sealed outer pipe upper end.The utility model reduces the cost of pressing crack construction; Improve the safety changing fracture well head; Simplify and change fracture well head step.
Description
Technical field
The utility model relates to oil field and changes fracture well head operation technique, specifically a kind of quick-replaceable rig tool.
Background technology
Pressure break refers in oil recovery or gas recovery, utilizes hydraulic action, makes oil-gas Layer form a kind of method in crack, can improve the penetrating power of oil-gas Layer, to increase water injection rate (water injection well) or oil production (oil well).In pressing crack construction process, fracture well head must be used.Because the price of fracture well head is very high, and mostly be and rent, in order to reduce costs, after pressing crack construction completes, fracture well head need be changed into common 250 model well head as early as possible.The conventional way in current oil field carries out well head open flow after pressure break completes, and time in open flow to well without pressure, tears fracture well head open, carry fracturing string, then under enter oil pipe, rod string and oil well pump and carry out pumping and ask product.This way has two distinct disadvantage: one be after pressure break from continuous blow-out release to well in can continue several days to tens days without the pressure stage, take fracture well head during this period of time always, greatly add every costs such as fracture well head rental charge, labour cost; Two is, when carrying fracturing string, likely cause blowout, and danger is larger.
Summary of the invention
The purpose of this utility model is to provide a kind of quick-replaceable rig tool, reduces costs under band pressure condition while lifting construction safety.
In order to reach above-mentioned purpose, the utility model have employed following technical scheme, a kind of quick-replaceable rig tool, comprise sealed outer pipe, insert pipe in envelope, in described slotting envelope, pipe saves under comprising interior Guan Shangjie, interior pipe box cupling, interior pipe, described interior Guan Shangjie is connected by interior pipe box cupling with saving under interior pipe, and described interior Guan Shangjie inserts and is enclosed in sealed outer pipe inside.
Described interior Guan Shangjie outer wall offers at least two seals groove, installs sealing ring, be sealed in the inwall of sealed outer pipe in groove.
The external diameter of described interior Guan Shangjie is identical with the internal diameter basic size of sealed outer pipe, and on interior pipe in energy-conservation insertion sealed outer pipe, both rely on identical basic size and sealing ring to form sealing.
The withstand voltage 70MPa of this slotting seal apparatus.
Under described interior pipe, joint is tubing nipple, and two ends all arrange screw thread, and described interior Guan Shangjie lower end arranges screw thread, and interior pipe box cupling arranges internal thread.
Screw thread is offered in described sealed outer pipe upper end.
Compared to prior art, the utility model has following beneficial effect:
1, the cost of pressing crack construction is reduced;
2, improve the safety changing fracture well head;
3, replacing fracture well head step is simplified.
Accompanying drawing explanation
Fig. 1 is the assembling schematic diagram of the high pressure resistant slotting envelope of the utility model.In figure, 1. sealed outer pipe, 2. inserts pipe in envelope.
Fig. 2 is the slotting envelope inner tube structure schematic diagram of the high pressure resistant slotting envelope of the utility model.In figure, Guan Shangjie in 21., pipe box cupling in 22., the lower joint of pipe in 23., 24. sealing rings.
Fig. 3 is the sealed outer pipe schematic diagram of the high pressure resistant slotting envelope of the utility model.
Fig. 4 is that the utility model is at construction 250 shaft collar schematic diagrames in early stage.In figure, 5. hanger, 6.250 type wellhead casing pipe four-ways, 7. oil pipe.
Fig. 5 is the utility model using method schematic diagram in pressing crack construction process.In figure, 1. sealed outer pipe, 2. inserts pipe in envelope, 3. extraordinary hanger, 4. fracture well head, 5. extraordinary hanger, 6.250 type wellhead casing pipe four-ways, 8. oil pipe.
Fig. 6 is that the utility model is at the structural representation tearing fracture well head process open.In figure, 1. sealed outer pipe, 2. inserts pipe in envelope, 3. extraordinary hanger, 4. fracture well head, 5. extraordinary hanger, 6.250 type wellhead casing pipe four-ways, 7. blanking plug, 8. oil pipe.
Fig. 7 is the utility model structural representation after replacing completes fracture well head.In figure, 5. extraordinary hanger, 6.250 type wellhead casing pipe four-ways, 7. blanking plug, 8. oil pipe, 9.250 well heads produce four-way.
Detailed description of the invention
Relevant detailed description of the present utility model and technology contents, coordinate accompanying drawing to be described as follows, but accompanying drawing only provides with reference to the use with explanation, is not used for being limited the utility model.
With reference to accompanying drawing 1-3, a kind of quick-replaceable rig tool, comprise sealed outer pipe 1, insert pipe 2 in envelope, in described slotting envelope, pipe saves 23 under comprising interior Guan Shangjie 21, interior pipe box cupling 22, interior pipe, described interior Guan Shangjie is connected by interior pipe box cupling with saving under interior pipe, and described interior Guan Shangjie inserts and is enclosed in sealed outer pipe inside.
Interior Guan Shangjie outer wall offers at least two seals groove, installs sealing ring 24, be sealed in the inwall of sealed outer pipe in groove.The external diameter of described interior Guan Shangjie is identical with the internal diameter basic size of sealed outer pipe, and on interior pipe in energy-conservation insertion sealed outer pipe, both rely on identical basic size and sealing ring to form sealing.The withstand voltage 70MPa of this slotting seal apparatus.
Under interior pipe, joint is tubing nipple, and two ends all arrange screw thread, and described interior Guan Shangjie lower end arranges screw thread, and interior pipe box cupling arranges internal thread.Screw thread is offered in described sealed outer pipe upper end.
As shown in Figure 4, before carrying out pressing crack construction, enter oil pipe 8 and extraordinary hanger 5 under first in 250 well heads 6, wherein oil pipe 8 links together with the lower thread of extraordinary hanger 5.
As shown in Figure 2, two sealing rings 24 are inserted in successively in the o-ring groove of interior Guan Shangjie 21, then couple together saving 23 under interior Guan Shangjie 21 and interior pipe with interior pipe box cupling 22, by for subsequent use for pipe 2 in the slotting envelope that assembles.
As shown in Figure 5, on 250 wellhead casing pipe four-way 6 tops, fracture well head 4 is installed; Lower for pipe in pipe 2 in the slotting envelope the assembled screw thread of joint 23 and the top of extraordinary hanger 5 are threaded togather; Install sealed outer pipe 1 and extraordinary hanger 3 successively again, wherein sealed outer pipe 1 can be enclosed within pipe 2 outside in slotting envelope and form cooperation, and sealed outer pipe 1 and extraordinary hanger 3 are for being threaded.Pressing crack construction can be carried out after completing above step.
As shown in Figure 6, after pressing crack construction completes, while the young four-way of fractured well carries out open flow, transfer blanking plug 7, blanking plug 7 is setting, after blocking borehole pressure, remove relief line and fracture well head 4, now hanger 3 and sealed outer pipe 1 are followed fracture well head 4 and are together removed; Remove again and insert pipe 2 in envelope.
As shown in Figure 6, remove after fracture well head, 250 well heads be installed on 250 wellhead casing pipe four-way 6 tops and produce four-ways 9, after installing, blanking plug 7 deblocking, on carry.Under enter pressure break return row integrated pump discharge opeing ask product, work progress all completes.
Use the construction of this instrument to eliminate and put forward this step of fracturing string, greatly reduce blowout probability, improve working security.And decrease the fracture well head rental period, greatly reduce the rent use of fracture well head, reduce cost of production.
The foregoing is only preferred embodiment of the present utility model, be not used to limit the scope of the claims of the present utility model, other use the equivalence of patent spirit of the present utility model to change, and all should all belong to the scope of the claims of the present utility model.
Claims (6)
1. a quick-replaceable rig tool, it is characterized in that, comprise sealed outer pipe, insert pipe in envelope, in described slotting envelope, pipe saves under comprising interior Guan Shangjie, interior pipe box cupling, interior pipe, described interior Guan Shangjie is connected by interior pipe box cupling with saving under interior pipe, and described interior Guan Shangjie inserts and is enclosed in sealed outer pipe inside.
2. a kind of quick-replaceable rig tool according to claim 1, is characterized in that, described interior Guan Shangjie outer wall offers at least two seals groove, installs sealing ring, be sealed in the inwall of sealed outer pipe in groove.
3. a kind of quick-replaceable rig tool according to claim 2, it is characterized in that, the external diameter of described interior Guan Shangjie is identical with the internal diameter basic size of sealed outer pipe, and on interior pipe in energy-conservation insertion sealed outer pipe, both rely on identical basic size and sealing ring to form sealing.
4. a kind of quick-replaceable rig tool according to claim 1, is characterized in that, the withstand voltage 70MPa of this slotting seal apparatus.
5. a kind of quick-replaceable rig tool according to claim 1, is characterized in that, under described interior pipe, joint is tubing nipple, and two ends all arrange screw thread, and described interior Guan Shangjie lower end arranges screw thread, and interior pipe box cupling arranges internal thread.
6. a kind of quick-replaceable rig tool according to claim 5, is characterized in that, screw thread is offered in described sealed outer pipe upper end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420702091.9U CN204225811U (en) | 2014-11-20 | 2014-11-20 | A kind of quick-replaceable rig tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420702091.9U CN204225811U (en) | 2014-11-20 | 2014-11-20 | A kind of quick-replaceable rig tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204225811U true CN204225811U (en) | 2015-03-25 |
Family
ID=52923920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420702091.9U Expired - Fee Related CN204225811U (en) | 2014-11-20 | 2014-11-20 | A kind of quick-replaceable rig tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204225811U (en) |
-
2014
- 2014-11-20 CN CN201420702091.9U patent/CN204225811U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20150325 Termination date: 20171120 |