CN202531129U - Intelligent oil bailing swab - Google Patents
Intelligent oil bailing swab Download PDFInfo
- Publication number
- CN202531129U CN202531129U CN2012202027791U CN201220202779U CN202531129U CN 202531129 U CN202531129 U CN 202531129U CN 2012202027791 U CN2012202027791 U CN 2012202027791U CN 201220202779 U CN201220202779 U CN 201220202779U CN 202531129 U CN202531129 U CN 202531129U
- Authority
- CN
- China
- Prior art keywords
- swab
- central tube
- cavity
- protect
- thick bamboo
- 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 - Lifetime
Links
- 238000012856 packing Methods 0.000 claims description 15
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 7
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract 4
- 235000017491 Bambusa tulda Nutrition 0.000 abstract 4
- 241001330002 Bambuseae Species 0.000 abstract 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract 4
- 239000011425 bamboo Substances 0.000 abstract 4
- 238000000034 method Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Images
Landscapes
- Safety Valves (AREA)
Abstract
The utility model relates to an intelligence swab of salvaging for oil. The problems that an existing oil bailing swab is blocked when moving downwards, is not tight in sealing, cannot be used in an inclined shaft and does not have a constant pressure device are mainly solved. The method is characterized in that: center tube (9) upper portion outside put and protect a section of thick bamboo joint (5), on protect a section of thick bamboo joint (5) and the outside of center tube (9) on protect a section of thick bamboo (7) threaded connection, and on protect a section of thick bamboo joint (5) and the step of center tube (9) outer wall and form annular cavity altogether, the cavity embeds there is spring (6), center tube (9) lower part inboard and cavity between lower clutch (16) put relief valve overcoat (11), relief valve overcoat (11) inside has case (12), case (12) bottom is equipped with level pressure spring (14). The intelligent oil bailing swab has good sealing performance, does not meet the resistance when going down, is additionally provided with the rotary centralizer, can be used for an inclined well or an inclined straight well, and can realize quantitative oil bailing.
Description
Technical field
The utility model relates to the field, oil field, a kind of specifically intelligent swab.
Background technology
Oilfield exploitation is in the later stage at present, especially peripheral oil field, and intelligent bailing formula oil pumper is able to use more and more.But there is following problem mostly in swab commonly used at present:
(1) descendingly after the wax deposition be hampered: because the structure of swab limit, when the too small meeting of packing element external diameter causes poorly sealedly, influence and drag for oily effect, increase packing element external diameter causes easily again that swab is descending to be hampered;
(2) poorly sealed, the hysteresis of swab, efficient are low: because pressure release valve of swab upper design; When valve fouling or wax; Valve is not tight, is prone to cause leakage, and the expansion force of packing element is from the pressure of swab motion back fluid column; Therefore need up a period of time of swab that packing element is expanded fully and seal, have hysteresis quality;
(3) can not on inclined shaft, use: the designing institute limit of swab, there is not erection device on the swab, therefore can not be in inclined shaft or tiltedly straight well use;
(4) no constant pressure arrangement when ball-and-seat pours in down a chimney or certain this liquid level is crossed can't let out automatically deeply and carried, builds the pressure easily and shuts down or drag disconnected swab.
Summary of the invention
Descendingly be hampered in order to overcome existing swab, poorly sealed, can not on inclined shaft, use, the deficiency of no constant pressure arrangement; The utility model provides a kind of intelligent swab, this intelligence swab good airproof performance, descending be not hampered, increased the rotation centralizer and can be used for inclined shaft or tiltedly straight well, can realize quantitatively dragging for oil.
The technical scheme of the utility model is: a kind of intelligent swab comprise top connection, lower contact, central tube, and upper and lower joint is threaded with central tube; The central tube outside is equipped with packing element; Described top connection sidewall is provided with inlet opening, and the lower contact sidewall is provided with relief hole, and described central tube upper outside is equipped with the casing joint; Last casing joint is threaded with the outside last casing of central tube; And the step of last casing joint and central tube outer wall forms toroidal cavity jointly, and cavity is built-in with spring, is equipped with the relief valve overcoat in the cavity between described central tube lower inside and the lower contact; There is spool relief valve overcoat inside, and the spool bottom is provided with the level pressure spring.
The described casing joint outside of going up is provided with wiper block, the flat adjusting cap that is provided with in the top of last casing joint.
Described packing element external diameter is less than 56mm.
The utlity model has following beneficial effect: owing to take such scheme; An air chamber is installed in the swab upper end; With designated depth at the bottom of the swab lower going-into-well, along with the continuous recovery air chamber of liquid level is compressed, when build-up of fluid after to a certain degree; Do not recompress after touching stopping means, promptly guaranteed to seal and controlled compressive strength again; The sealing drum external diameter can be designed as below φ 56 mm, and 3 mm gaps are arranged between the oil pipe, descendingly is not hampered; Increased the rotation centralizer simultaneously, can be used for inclined shaft or oblique straight well, and installed the automatic constant pressure device additional, be unloaded to setting load automatically when perhaps fluid column is too high, realized dragging for oil automatically, and drag for liquid at every turn and can realize quantitatively when ball-and-seat pours in down a chimney in the swab lower end.
Description of drawings
Fig. 1 is the structural representation of the utility model.
1-top connection among the figure, the 2-holding screw, 3-regulates cap, 4-wiper block, the last casing joint of 5-, 6-spring; The last casing of 7-, 8-packing ring, 9-central tube, 10-packing element, 11-relief valve, 12-spool; The 13-lower shield, 14-level pressure spring, 15-holding screw, 16-lower contact, 17-relief hole, 18-inlet opening.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further:
By shown in Figure 1, a kind of intelligent swab comprises top connection 1, lower contact 16, central tube 9; And upper and lower joint (1,16) is threaded with central tube 9, and described top connection 1 sidewall is provided with inlet opening 18; Lower contact 16 sidewalls are provided with relief hole 17, and central tube 9 outsides are equipped with packing element 10, and described packing element 10 external diameters are less than 56mm; And 3 mm gaps are arranged between the oil pipe, can guarantee descendingly not to be hampered, described central tube 9 upper outside are equipped with casing joint 5; Described casing joint 5 outsides of going up are provided with wiper block 4, play the effect of setting upright, and make this swab can be used for inclined shaft or oblique straight well.Last casing joint 5 tops are provided with regulates cap 3, all fixes through holding screw 2 between top connection 1 and the central tube 9 and between adjusting cap 3 and the central tube 9.Last casing joint 5 is threaded with central tube 9 outside last casings 7; And last casing joint 5 forms toroidal cavity jointly with the step of central tube 9 outer walls, and cavity is built-in with spring 6, and the cavity bottom is provided with packing ring 8; And, make cavity become the air chamber of sealing by the sealing ring sealing.Be equipped with relief valve overcoat 11 in the cavity between described central tube 9 lower inside and the lower contact 16, there is spool 12 relief valve overcoat 11 inside, and spool 12 bottoms are provided with level pressure spring 14.
This swab is after the designated depth of going into the well, and along with the continuous recovery of liquid level, the air chamber between central tube 9 and the last casing 7 is compressed; Spring 6 is compressed thereupon; After the pressure in the air chamber acquired a certain degree, the packing element 10 of compression bottom made the sealing of packing element 10 distendings.When ball-and-seat pours in down a chimney or fluid column when too high, the level pressure spring 14 of compression bottom is opened leakage opening 17 pressure releases, realizes dragging for oil automatically, and drags for liquid at every turn and can realize quantitatively.
Claims (3)
1. intelligent swab; Comprise top connection (1), lower contact (16), central tube (9), and upper and lower joint (1,16) is threaded with central tube (9); Central tube (9) outside is equipped with packing element (10); It is characterized in that: described top connection (1) sidewall is provided with inlet opening (18), and lower contact (16) sidewall is provided with relief hole (17), and described central tube (9) upper outside is equipped with casing joint (5); Last casing joint (5) is threaded with the outside last casing (7) of central tube (9); And last casing joint (5) forms toroidal cavity jointly with the step of central tube (9) outer wall, and cavity is built-in with spring (6), is equipped with relief valve overcoat (11) in the cavity between described central tube (9) lower inside and the lower contact (16); There is spool (12) relief valve overcoat (11) inside, and spool (12) bottom is provided with level pressure spring (14).
2. intelligent swab according to claim 1 is characterized in that: described casing joint (5) outside of going up is provided with wiper block (4), and flat being provided with in the top of last casing joint (5) regulated cap (3).
3. intelligent swab according to claim 2 is characterized in that: described packing element (10) external diameter is less than 56mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202027791U CN202531129U (en) | 2012-05-08 | 2012-05-08 | Intelligent oil bailing swab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202027791U CN202531129U (en) | 2012-05-08 | 2012-05-08 | Intelligent oil bailing swab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202531129U true CN202531129U (en) | 2012-11-14 |
Family
ID=47132319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202027791U Expired - Lifetime CN202531129U (en) | 2012-05-08 | 2012-05-08 | Intelligent oil bailing swab |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202531129U (en) |
-
2012
- 2012-05-08 CN CN2012202027791U patent/CN202531129U/en not_active Expired - Lifetime
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104265234B (en) | Constant pressure stepped-depacking packer | |
| CN101949281B (en) | Underground throttle | |
| CN204877369U (en) | Liquid accuse is from deblocking formula fracturing packer | |
| CN101858330A (en) | Gas Well Drainage Gas Production Plunger | |
| CN203756112U (en) | Well washing balance packer | |
| CN202745837U (en) | Natural energy circulation gas lift well completion pipe string | |
| CN202152663U (en) | Bidirectional floating type setting device | |
| CN204284618U (en) | A kind of top row's formula outlet valve | |
| CN201778759U (en) | Underground tubing-casing annulus pressure-reducing device | |
| CN202531129U (en) | Intelligent oil bailing swab | |
| CN201802372U (en) | Underground throttle | |
| CN201705613U (en) | Gas Well Drainage Gas Production Plunger | |
| CN104314511B (en) | Compression type bottom sealing packer | |
| CN100572742C (en) | Hydraulic expansion type screen pipe hanger | |
| CN2786274Y (en) | Antipollution oil layer packer for heat cleaning of oil pumping well | |
| CN205778779U (en) | The eccentric injection mandrel of pressure opened by a kind of band | |
| CN104549794A (en) | Underflow control device of hydrocyclone | |
| CN202360058U (en) | Fishable oil pipe plug | |
| CN105952421B (en) | A kind of split type plunger steel wire pumping equipment | |
| CN202338278U (en) | Oil pipe uniflow apparatus for horizontal well | |
| CN201756946U (en) | Ball-type deep-well tubing bridge plug | |
| RU2496971C1 (en) | Automatic device for bypass of annular gas to tubing string | |
| CN202202838U (en) | A hydraulic packer | |
| CN201321840Y (en) | Constant pressure valve used for oil field well completion | |
| CN203948039U (en) | A kind of sleeve pipe suspension device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121114 |