CN203114269U - Sliding sleeve type negative pressure testing device - Google Patents
Sliding sleeve type negative pressure testing device Download PDFInfo
- Publication number
- CN203114269U CN203114269U CN 201320124807 CN201320124807U CN203114269U CN 203114269 U CN203114269 U CN 203114269U CN 201320124807 CN201320124807 CN 201320124807 CN 201320124807 U CN201320124807 U CN 201320124807U CN 203114269 U CN203114269 U CN 203114269U
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- negative pressure
- sliding sleeve
- sleeve
- cavity
- hole
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Abstract
The utility model discloses a sliding sleeve type negative pressure testing device. A negative pressure cavity and a pressurization cavity are formed in a shell body of the sliding sleeve type negative pressure testing device, a pressure conducting tube is arranged in the center of the negative pressure cavity, the lower end of the pressure conducting tube stretches into and is communicated with the pressurization cavity, a sliding sleeve is arranged on the lower portion of the negative pressure cavity, a limit table which protrudes inwards is formed on the inner wall of the upper portion of the shell body, a supporting table which protrudes inwards is formed on the inner wall of the lower portion of the shell body, a fixed cutting sleeve is mounted on the inner wall of the middle portion of the shell body, a movable cutting sleeve is arranged on the inner side of the fixed cutting sleeve, the fixed cutting sleeve is connected with the movable cutting sleeve through pins, the sliding sleeve is limited by the movable cutting sleeve and the supporting table, the lower portion of the sliding sleeve is sleeved on the pressure conducting tube, the negative pressure cavity is sealed and isolated from the pressurization cavity through the sliding sleeve, a negative through hole which is communicated with the negative pressure cavity is formed in the wall surface of the middle portion of the sliding sleeve, and a negative hole which is communicated with the negative pressure through hole of the moved sliding sleeve after being pressed is correspondingly arranged on the shell body at the position of the negative pressure cavity. The sliding sleeve type negative pressure testing device is simple in structure, economic, practical, and capable of achieving the integrated operation of perforation, induced flow and well completion.
Description
Technical field
The utility model relates to the oil drilling field, particularly relates to a kind of sleeve type negative pressure testing arrangement.
Background technology
In petroleum industry, the oil well perforation operation is one important procedure, 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 flow into purpose in the oil well smoothly.The oil pipe underbalance perforating is to use wider perforating technology at present; utilize strata pressure to be higher than wellbore pressure; can utilize strata pressure to impact chip and the residue that cleans oil reservoir perforation intraocular in perforation moment; and can prevent that perforating fluid is to reservoir damage caused; therefore underbalance perforating is a kind of completion method of protecting payzone, improving production capacity, is applicable to that the completion of the oil gas well that strata pressure is lower is gone into operation.The mode that present underbalance perforating is taked is downhole testing valve and perforating gun synergy, and as the instrument of making negative pressure, shortcoming needs to trip out test string after the kill-job after being that test is finished with the downhole testing valve, and well killing fluid may damage the stratum.In addition, the downhole testing instrument is more, is not suitable for the completion tubular column operation.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of simple in structure, the sleeve type negative pressure testing arrangement that can realize perforation, induced flow, completion institutional operation.
For this reason, the technical solution of the utility model is as follows:
A kind of sleeve type negative pressure testing arrangement, comprise pressure tube and by top connection, the device case that body and lower contact connect to form successively, in this device case, be formed with negative pressure cavity, below this negative pressure cavity, be formed with pressurizing chamber, described pressure tube is arranged on the center of negative pressure cavity and its lower end and stretches in the pressurizing chamber and with pressurizing chamber and be communicated with, be provided with a sliding sleeve in the bottom of described negative pressure cavity, be formed with inwardly outstanding limiting stand in described top connection lower inner wall, be formed with inwardly outstanding brace table in the lower contact upper inside wall, described body and top connection joint inwall cave inward and form the installing hole of an annular, at this installing hole one fixed shear cover is installed, be provided with a movable shear sleeve in this fixed shear cover inboard, be connected by pin between described fixed shear cover and the movable shear sleeve, described sliding sleeve is spacing by described movable shear sleeve and brace table, the bottom of sliding sleeve is socketed on the pressure tube and with described negative pressure cavity and pressurizing chamber sealing and completely cuts off, wall at sliding sleeve middle part is formed with the negative pressure through-hole that is communicated with negative pressure cavity, at the corresponding negative pressure hole that is connected with negative pressure through-hole on the sliding sleeve after pressurized moves that is provided with on the device case at negative pressure cavity place.
In addition, be to improve sealing, between described upper and lower joint and the body, between the inner walls of described negative pressure hole upper and lower part and the sliding sleeve and be equipped with seal between sliding sleeve and pressure tube and the lower contact.
This device can be worked under various hole conditions, and its simple in structure, economic use can be supporting with the perforation equipment, once finishes perforation, induced flow completion practice, especially is fit to directly drop into the oil gas well of developing after the finishing drilling.After replacing stratum protection liquid, be lowered to perforating gun, underbalance perforating instrument and packer and separate the oil jacket annular space, annular space pressurization perforation, open the production passage, can directly adorn the well head open flow and ask product, be particularly suitable for water-sensitive formation.After the finishing drilling, directly replace out mud with oil layer protection liquid, carry out underbalance perforating completion one-trip string, workover fluid can not cause the secondary pollution on stratum behind the perforation.
Description of drawings
Fig. 1 is the cross-sectional view of sleeve type negative pressure testing tool of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing structure of the present utility model is elaborated.
As shown in Figure 1, this kind sleeve type negative pressure testing arrangement comprises pressure tube 6 and device case, and described device case is connected to form successively by top connection 1, body 2 and lower contact 3.Be formed with negative pressure cavity A in device case, be formed with pressurizing chamber B below negative pressure cavity, pressure tube 6 is arranged on the center of negative pressure cavity A and its lower end and stretches in the pressurizing chamber B and with pressurizing chamber and be communicated with.Be provided with a sliding sleeve 4 in the bottom of negative pressure cavity A, in addition, be formed with inwardly outstanding limiting stand 15 in top connection 1 lower inner wall, be formed with inwardly outstanding brace table 16 in lower contact 3 upper inside wall, cave inward at body 2 and top connection 1 joint inwall and to form the installing hole 17 of an annular, at installing hole 17 fixed shear cover 12 is installed, overlaps 12 inboards in fixed shear and be provided with movable shear sleeve 11, be connected by pin 5 between fixed shear cover 12 and the movable shear sleeve 11.Sliding sleeve 4 is spacing by movable shear sleeve 11 and brace table 16, the bottom of sliding sleeve 4 is socketed on the pressure tube 6 and with negative pressure cavity and pressurizing chamber sealing and completely cuts off, wall at sliding sleeve middle part is formed with the negative pressure through-hole 14 that is communicated with negative pressure cavity, at the corresponding negative pressure hole 13 that is connected with negative pressure through-hole on the sliding sleeve after pressurized moves that is provided with on the device case at negative pressure cavity place.
In addition, described upper and lower joint 1,3 and body 2 between, between the inner walls of described negative pressure hole 13 upper and lower parts and the sliding sleeve 4 and be equipped with rubber seal between sliding sleeve 4 and pressure tube 6 and the lower contact 3.
This Unit Installation process is as follows:
At first, each rubber seal is assembled into the relevant position, recycling pin 5 is fixing with fixed shear cover 12 and movable shear sleeve 11.Then body 2 tops are screwed on the screw thread of top connection 1, with sliding sleeve 4 be inserted in the body 2, fixed shear overlaps 12 bottoms, lower contact 3 is screwed in the body 2 bottom screw threads again, and is simultaneously that sliding sleeve 4 is fixing, at last pressure tube 6 inserted the device inside.
During use, external pressure acts on the step place of sliding sleeve 4 bottoms by pressure tube, when pressure surpass cut off 5 shear force after, movable shear sleeve 12 and sliding sleeve 4 go upward to the limit dais of inside, top connection 1 lower end, hole 14 on the while sliding sleeve 4 communicates with the hole 13 on the body 2, form negative pressure and produce passage, fluid enters in the oil pipe through body, sliding sleeving hole.
Claims (2)
1. sleeve type negative pressure testing arrangement, comprise pressure tube (6) and by top connection (1), the device case that body (2) and lower contact (3) connect to form successively, in this device case, be formed with negative pressure cavity (A), below this negative pressure cavity, be formed with pressurizing chamber (B), described pressure tube (6) is arranged on the center of negative pressure cavity (A) and its lower end and stretches in the pressurizing chamber (B) and with pressurizing chamber and be communicated with, it is characterized in that: be provided with a sliding sleeve (4) in the bottom of described negative pressure cavity (A), be formed with inwardly outstanding limiting stand (15) in described top connection (1) lower inner wall, be formed with inwardly outstanding brace table (16) in lower contact (3) upper inside wall, described body (2) caves inward with top connection (1) joint inwall and forms the installing hole (17) of an annular, at this installing hole (17) a fixed shear cover (12) is installed, be provided with a movable shear sleeve (11) in this fixed shear cover (12) inboard, be connected by pin (5) between described fixed shear cover (12) and the movable shear sleeve (11), described sliding sleeve (4) is spacing by described movable shear sleeve (11) and brace table (16), the bottom of sliding sleeve (4) is socketed in pressure tube (6) upward and described negative pressure cavity and pressurizing chamber sealing is isolated, wall at sliding sleeve middle part is formed with the negative pressure through-hole (14) that is communicated with negative pressure cavity, at the corresponding negative pressure hole (13) that is connected with negative pressure through-hole on the sliding sleeve after pressurized moves that is provided with on the device case at negative pressure cavity place.
2. sleeve type negative pressure testing arrangement according to claim 1 is characterized in that: between described upper and lower joint (1,3) and the body (2), between the inner walls of described negative pressure hole (13) upper and lower part and the sliding sleeve (4) and be equipped with seal between sliding sleeve (4) and pressure tube (6) and the lower contact (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320124807 CN203114269U (en) | 2013-03-17 | 2013-03-17 | Sliding sleeve type negative pressure testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320124807 CN203114269U (en) | 2013-03-17 | 2013-03-17 | Sliding sleeve type negative pressure testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203114269U true CN203114269U (en) | 2013-08-07 |
Family
ID=48894629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320124807 Expired - Fee Related CN203114269U (en) | 2013-03-17 | 2013-03-17 | Sliding sleeve type negative pressure testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203114269U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110778293A (en) * | 2018-07-11 | 2020-02-11 | 中石化石油工程技术服务有限公司 | Multifunctional combined hole digger |
| 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 |
-
2013
- 2013-03-17 CN CN 201320124807 patent/CN203114269U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110778293A (en) * | 2018-07-11 | 2020-02-11 | 中石化石油工程技术服务有限公司 | Multifunctional combined hole digger |
| 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 | ||
| 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: 20130807 Termination date: 20190317 |