CN2453132Y - Oil pipe conveying, multi-stage perforating negative pressure means - Google Patents
Oil pipe conveying, multi-stage perforating negative pressure means Download PDFInfo
- Publication number
- CN2453132Y CN2453132Y CN 00250399 CN00250399U CN2453132Y CN 2453132 Y CN2453132 Y CN 2453132Y CN 00250399 CN00250399 CN 00250399 CN 00250399 U CN00250399 U CN 00250399U CN 2453132 Y CN2453132 Y CN 2453132Y
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- pressure
- negative
- negative pressure
- piston
- pressurizing chamber
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Abstract
The utility model relates to a multi-stage perforating negative-pressure device for oil tube transmission. A negative-pressure chamber and a pressurized chamber are arranged in the utility model, a pressure transmitting tube is arranged in the negative-pressure chamber, pistons are arranged in the negative-pressure chamber and the pressurized chamber in order to insulate the negative-pressure chamber and the pressurized chamber, and the pistons and a shell body of the device are provided with ignition pressure holes and negative-pressure holes. When certain pressure is obtained, the pressure delays, an ignition head is detonated, the pressure keeps on boosting during time delay, negative pressure is formed at the prearranged positions of the upper parts of the pistons, and perforating guns at all stages are detonated after time delay is completed. The utility model having the advantages of simple working procedure and low cost can realize the ideal technology of negative-pressure oil tube transmission and perforation under the condition that straight wells, large-inclination wells and horizontal wells are pressurized for ignition during wide-span multipoint detonation.
Description
The utility model is a kind of negative-pressure equipment of multi-stage perforator for oil tube delivery.
In petroleum industry, the oil well perforation operation is an important operation, be that high lined-cavity charge is installed in the perforating gun, treat behind the target zone of down-hole, to ignite under it, after high lined-cavity charge after the ignition penetrates perforating gun, further penetrate sleeve pipe and the cement sheath of wearing the borehole wall, the stratum is communicated with oil well, reach formation fluid and can successfully flow into purpose in the oil well.The tubing transmission underbalance perforating is the perforating technology of using at present more widely, utilize strata pressure to be higher than wellbore pressure, perforation moment can utilize strata pressure to impact chip and the residue that cleans the perforation intraocular, and can prevent that well killing fluid from entering the stratum and polluting, thereby reach the purpose that improves oil and gas production.In the horizontal well multipoint priming, adopt pressure igniting blasting perforating gun usually, domestic general employing casing pressure pressurization igniting, but can not realize underbalance perforating.By N
2Gas pressurization delayed firing is set up negative pressure mode, and the activity duration is long, cost is high, technology is complicated.In many interlayers of large span well section, when adopting interlayer gun, one cost height, there is the propagation of explosion problem in its two detonating fuse in longer interlayer gun; Domestic have the multistage caber mode of employing to light a fire, in case but have the operation failure, can't search reason, adventurous defective during lift pipe string.And, in high angle hole, horizontal well, can not be suitable for.
The purpose of this utility model is to provide a kind of simple in structure, negative-pressure equipment of multi-stage perforator for oil tube delivery that cost is low, applied widely.
The utility model is achieved in that and is provided with the negative pressure cavity that communicates with oil pipe in the negative-pressure equipment of multi-stage perforator for oil tube delivery, the below of described negative pressure cavity is provided with pressurizing chamber, the middle part of negative pressure cavity is provided with vertical pressure tube, the bottom of described pressure tube is stretched in the pressurizing chamber, and be communicated with pressurizing chamber, the top of pressure tube is provided with and installs the pressurization passageway of exterior, described pressure tube is communicated with pressurization passageway, be provided with one in negative pressure cavity and the pressurizing chamber with negative pressure cavity and the isolated piston of pressurizing chamber sealing, described piston seal is socketed on the pressure tube, piston barrel in the pressurizing chamber is provided with the igniter pressure through hole of outside transmission igniter pressure, the corresponding igniter pressure hole that is communicated with piston igniter pressure through hole that is provided with on the device case, have the negative pressure through-hole that is communicated with negative pressure cavity on the piston barrel in the negative pressure cavity, correspondence is provided with the negative pressure hole that is connected with the negative pressure through-hole of piston after pressurized moves on the device case.
The utility model is owing to be provided with in device negative pressure cavity and the isolated piston of pressurizing chamber sealing, piston and device case are provided with igniter pressure hole and negative pressure hole, operation is simple, cost is low, the negative pressure oil tube transmission perforation technology of really realizing ideal can be used in straight well, high angle hole, the multipoint priming of horizontal well large span under the pressure point condition of a fire condition.
Below in conjunction with embodiment the utility model is described in detail:
Fig. 1 is a structural representation of the present utility model.
Be provided with the negative pressure cavity 2 that communicates with oil pipe 1 in the negative-pressure equipment of multi-stage perforator for oil tube delivery, the below of described negative pressure cavity 2 is provided with pressurizing chamber 3, the middle part of negative pressure cavity 2 is provided with vertical pressure tube 4, the bottom of described pressure tube 4 is stretched in the pressurizing chamber 3, and be communicated with pressurizing chamber 3, the top of pressure tube 4 is provided with and installs the pressurization passageway 5 of exterior, described pressure tube 4 is communicated with pressurization passageway 5, be provided with in negative pressure cavity 2 and the pressurizing chamber 3 negative pressure cavity 2 and the isolated piston 6 of pressurizing chamber 3 sealings, described piston 6 sealing shrouds are connected on the pressure tube 4, piston barrel 7 in the pressurizing chamber 3 is provided with the igniter pressure through hole 8 of outside transmission igniter pressure, the corresponding igniter pressure hole 10 that is communicated with piston igniter pressure through hole 8 that is provided with on the device case 9, have the negative pressure through-hole 11 that is communicated with negative pressure cavity 2 on the piston barrel 7 in the negative pressure cavity 2, the corresponding negative pressure hole 12 that is connected with negative pressure through-hole 11 on the piston 6 after pressurized moves that is provided with on the device case 9
Described piston 6 is provided with shearing component, and shearing component can be made of shear pin 13, so that piston 6 moves up behind certain pressure being subjected to.
In order to guarantee that negative pressure hole 12 location on negative pressure through-hole 11 and the device case 9 on the piston barrel 7 are communicated with, the lower end of piston barrel 7 is provided with collar 14, and pressurizing chamber 3 interior correspondences are provided with the belt card platform 15 that matches with described collar 14.
For use, easy for installation, negative pressure device is made up of device case 9 and joint that mutual thread seal connects for dividing a body structure.The inside that connects packer is that the lower end of the top connection 16 of cavity is connected with the upper end of device case 9, the lower end of the by-pass connection 17 that the upper end of top connection 16 and and oil pipe 1 join is tightly connected, by-pass connection 17 is located at the top of packer, be provided with negative pressure channel 18 that is communicated with negative pressure cavity 2 and the pressurization passageway 5 that is communicated with pressure tube 4 in the by-pass connection 17, pressure tube 4 is fixed on the by-pass connection 17, and described shear pin 13 is connected in the top connection 16.
The lower end of device case 9 also can be provided with the lower contact 19 that is connected with perforating gun, and the belt card platform 15 that matches with described collar 14 is located at the top of lower contact 19.
Spacing for piston 6 is carried out, there is limiting stand the top of piston barrel 7.
During operation, oil pipe is airtight, by oil filling pipe fluid cushion control negative pressure value, and packer setting, pressurize to oil sets annular space in ground, and by by-pass connection, pressure tube, igniter pressure hole, packer lower end annular space, pressure operation is at packer lower end annular space.When reaching certain pressure, pressure delayed firing head detonates, and enters time-delay, continues pressurization, and piston is cut off pin, up estimating position locking, and entrance pressure bore closure at this moment, open in the production hole, and the annular space of packer below is communicated with oil pipe, sets up negative pressure.After time-delay is finished, ignite perforating guns at different levels respectively.
Claims (9)
1. negative-pressure equipment of multi-stage perforator for oil tube delivery, it is characterized in that: be provided with the negative pressure cavity that communicates with oil pipe in the device, the below of described negative pressure cavity is provided with pressurizing chamber, the middle part of negative pressure cavity is provided with vertical pressure tube, the bottom of described pressure tube is stretched in the pressurizing chamber, and be communicated with pressurizing chamber, the top of pressure tube is provided with and installs the pressurization passageway of exterior, described pressure tube is communicated with pressurization passageway, be provided with one in negative pressure cavity and the pressurizing chamber with negative pressure cavity and the isolated piston of pressurizing chamber sealing, described piston seal is socketed on the pressure tube, piston barrel in the pressurizing chamber is provided with the igniter pressure through hole of outside transmission igniter pressure, the corresponding igniter pressure hole that is communicated with piston igniter pressure through hole that is provided with on the device case, have the negative pressure through-hole that is communicated with negative pressure cavity on the piston barrel in the negative pressure cavity, correspondence is provided with the negative pressure hole that is connected with the negative pressure through-hole of piston after pressurized moves on the device case.
2. negative-pressure equipment of multi-stage perforator for oil tube delivery as claimed in claim 1 is characterized in that: described piston is provided with shearing component.
3. negative-pressure equipment of multi-stage perforator for oil tube delivery as claimed in claim 2 is characterized in that: described shearing component is made of shear pin.
4. as claim 1,2 or 3 described negative-pressure equipment of multi-stage perforator for oil tube delivery, it is characterized in that: the lower end of described piston barrel is provided with collar, and correspondence is provided with the belt Ka Tai that matches with described collar in the pressurizing chamber.
5. negative-pressure equipment of multi-stage perforator for oil tube delivery as claimed in claim 4 is characterized in that: negative pressure device is made up of device case and joint that mutual thread seal connects for dividing body structure.
6. negative-pressure equipment of multi-stage perforator for oil tube delivery as claimed in claim 5, it is characterized in that: the inside that connects packer is that the lower end of the top connection of cavity is connected with the upper end of device case, the lower end of the by-pass connection that the upper end of top connection and and oil pipe join is tightly connected, be provided with negative pressure channel that is communicated with negative pressure cavity and the pressurization passageway that is communicated with pressure tube in the by-pass connection, pressure tube is fixed on the by-pass connection.
7. negative-pressure equipment of multi-stage perforator for oil tube delivery as claimed in claim 6 is characterized in that: described shear pin is connected in the top connection.
8. negative-pressure equipment of multi-stage perforator for oil tube delivery as claimed in claim 4 is characterized in that: the lower end of device case is provided with the lower contact that is connected with perforating gun, and the belt Ka Tai that matches with described collar is located at the top of lower contact.
9. as claim 1,2 or 3 described negative-pressure equipment of multi-stage perforator for oil tube delivery, it is characterized in that: there is limiting stand the top of piston barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00250399 CN2453132Y (en) | 2000-09-05 | 2000-09-05 | Oil pipe conveying, multi-stage perforating negative pressure means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00250399 CN2453132Y (en) | 2000-09-05 | 2000-09-05 | Oil pipe conveying, multi-stage perforating negative pressure means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2453132Y true CN2453132Y (en) | 2001-10-10 |
Family
ID=33608593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00250399 Expired - Lifetime CN2453132Y (en) | 2000-09-05 | 2000-09-05 | Oil pipe conveying, multi-stage perforating negative pressure means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2453132Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105401924A (en) * | 2015-12-10 | 2016-03-16 | 中国石油天然气股份有限公司 | Caber-tossing type firing device |
| CN107989576A (en) * | 2017-12-11 | 2018-05-04 | 中国海洋石油集团有限公司 | A kind of offshore oil and gas field high efficiency composition completion method |
| CN109025914A (en) * | 2018-08-09 | 2018-12-18 | 张卫华 | Perforation ignition system, perforation-test-acidification axle-linked cable-car and its application method |
| WO2024067726A1 (en) * | 2022-09-30 | 2024-04-04 | 中国石油天然气集团有限公司 | Negative-pressure perforation and dst combination testing string |
-
2000
- 2000-09-05 CN CN 00250399 patent/CN2453132Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105401924A (en) * | 2015-12-10 | 2016-03-16 | 中国石油天然气股份有限公司 | Caber-tossing type firing device |
| CN107989576A (en) * | 2017-12-11 | 2018-05-04 | 中国海洋石油集团有限公司 | A kind of offshore oil and gas field high efficiency composition completion method |
| CN109025914A (en) * | 2018-08-09 | 2018-12-18 | 张卫华 | Perforation ignition system, perforation-test-acidification axle-linked cable-car and its application method |
| CN109025914B (en) * | 2018-08-09 | 2020-10-09 | 陕西兴元石油科技有限公司 | Perforation ignition system, perforation-test-acidification combined operation tubular column and using method thereof |
| WO2024067726A1 (en) * | 2022-09-30 | 2024-04-04 | 中国石油天然气集团有限公司 | Negative-pressure perforation and dst combination testing string |
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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 |
Effective date of abandoning: 20040331 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |