CN2371329Y - Stepped hole type eccentric injection well down-hole flow - Google Patents
Stepped hole type eccentric injection well down-hole flow Download PDFInfo
- Publication number
- CN2371329Y CN2371329Y CN 98210454 CN98210454U CN2371329Y CN 2371329 Y CN2371329 Y CN 2371329Y CN 98210454 CN98210454 CN 98210454 CN 98210454 U CN98210454 U CN 98210454U CN 2371329 Y CN2371329 Y CN 2371329Y
- Authority
- CN
- China
- Prior art keywords
- hole
- support
- utility
- model
- seating nipple
- 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
Links
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Earth Drilling (AREA)
Abstract
The utility model discloses a stepped and hole-type eccentric water distributor for the subdivision water injection of an oil field. The utility model is characterized in that an eccentric work hole which is matched by the water distributor and a packer is a stepped hole. The problems that the existing straight hole has low matching and delivery successful rate and can not meet the need of the subdivision water injection are solved. The utility model has short delivery distance, has no damage for a sealing piece, can realize the water distribution spacing under 3 meters, and meets the need of the continuous water distribution for a small layer.
Description
The utility model relates to a kind of oil-field flooding down-hole instrument, belongs to ladder cellular type eccentric injection mandrel.
At present, what oil-field flooding was generally adopted is 656-2 type eccentric injection mandrel, its technical problem underlying is: the eccentric orfice of injection well downhole flow regulator is a straight hole, with blanking plug is that straight hole cooperates, thereby when delivering blanking plug, blanking plug very easily clashes into the eccentric orifices of injection well downhole flow regulator, and fragile O-ring seal, causes the sealing failure; Because the straight hole formula cooperates guidance quality poor, make that delivering distance must can't satisfy the needs of oil field subdivision injection greater than more than 8 meters, more can't realize the distributing room for water injection distance below 3 meters, can not satisfy the needs of continuous water distribution substratum.
The purpose of this utility model is exactly to provide a kind of deliverys distance to lack in order to overcome above-mentioned the deficiencies in the prior art, success rate height and can satisfy the ladder cellular type eccentric injection mandrel of subdivision injection needs.
The purpose of this utility model reaches by the following technical programs: this ladder cellular type eccentric injection mandrel, form by top connection, last tube connector, centralizer body, seating nipple, following tube connector, lower contact, screw and sealing ring, it is characterized in that: the eccentric orfice on the seating nipple is a shoulder hole, the chamber that is constituted in seating nipple, following tube connector and lower contact is built-in with support, in the support endoporus with the intrinsic guide way of screw, the support upper end upwards embeds in two symmetrical grooves of seating nipple lower end with two boss of symmetry, and the support lower end holds out against with lower contact.
The utility model has following advantage than prior art: because the eccentric orfice of this injection well downhole flow regulator is a shoulder hole, thereby guidance quality is good, delivers the success rate height, and does not damage O-ring seal, can guarantee the tubing string sealing, prolonged tubing string application life,, delivered distance and greatly reduce because shoulder hole cooperates guidance quality good, the shortlyest reach 1.8 meters, satisfied oil field subdivision injection spacing less than 3 meters needs, normal water filling also can be used, and has reduced operation labor intensity.
Accompanying drawing 1 is a structure chart of the present utility model;
Accompanying drawing 2 is A-A sectional views of the utility model Fig. 1.
The utility model is described in further detail below in conjunction with accompanying drawing, by Figure 1 and Figure 2, centralizer body 3 by screw on seating nipple 4, seating nipple 4 is coupled together by tube connector 2 with top connection 1, connection of thread all seals with sealing ring, seating nipple 4 lower ends are to be threaded down tube connector 5 and seal with sealing ring, guide way 7 with screw in support 6 mesopores, support 6 upper ends upwards embed in two symmetrical grooves of seating nipple 4 lower ends with two boss of symmetry, support 6 lower ends hold out against with lower contact 8, and lower contact 8 is threaded with following tube connector 5 and seals with sealing ring.
Claims (1)
1, ladder cellular type eccentric injection mandrel, form by top connection (1), last tube connector (2), centralizer body (3), seating nipple (4), following tube connector (5) and lower contact (8), it is characterized in that: the eccentric orfice (9) on the seating nipple (4) is a shoulder hole, the chamber that is constituted in seating nipple (4), following tube connector (5) and lower contact (8) is built-in with support (6), support (6) endoporus is with the intrinsic guide way of screw (7), support (6) upper end upwards embeds with two boss of symmetry in the groove of two symmetries of seating nipple (4) lower end, and support (6) lower end holds out against with lower contact (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98210454 CN2371329Y (en) | 1998-02-10 | 1998-02-10 | Stepped hole type eccentric injection well down-hole flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98210454 CN2371329Y (en) | 1998-02-10 | 1998-02-10 | Stepped hole type eccentric injection well down-hole flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2371329Y true CN2371329Y (en) | 2000-03-29 |
Family
ID=33965474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98210454 Expired - Fee Related CN2371329Y (en) | 1998-02-10 | 1998-02-10 | Stepped hole type eccentric injection well down-hole flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2371329Y (en) |
-
1998
- 1998-02-10 CN CN 98210454 patent/CN2371329Y/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 | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |