CN203847053U - Afterward throw-in type blanking plug - Google Patents
Afterward throw-in type blanking plug Download PDFInfo
- Publication number
- CN203847053U CN203847053U CN201420257879.3U CN201420257879U CN203847053U CN 203847053 U CN203847053 U CN 203847053U CN 201420257879 U CN201420257879 U CN 201420257879U CN 203847053 U CN203847053 U CN 203847053U
- Authority
- CN
- China
- Prior art keywords
- fishing rod
- seal
- dog
- blanking plug
- protruding claw
- 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
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Abstract
The utility model relates to the field of oil extraction devices, in particular to an afterward throw-in type blanking plug of a perforation and extraction combined pump. The afterward throw-in type blanking plug is reliable in sealing and firm in locking. The afterward throw-in type blanking plug comprises a fishing rod, wherein the periphery of the fishing rod is provided with a connecting sleeve in a matched and sleeved mode and is fixed through a safety pin which is arranged in the radial direction. The sidewall of the connecting sleeve is provided with a radial connecting hole which can be conveniently connected with a sucker tubing string. An annular space is formed between the lower half portion of the connecting sleeve and the periphery of the fishing rod, and the lower end of the connecting sleeve is connected with a protruding claw base through internal threads. The lower portion of the protruding claw base is in threaded and sealing connection with a sealing body. The outer portion of the sealing body is provided with sealing elements and compression rings, wherein the sealing elements seal a wellbore, and the compression rings are used for pressing and fixing the sealing elements. The lower end of the fishing rod stretches into the protruding claw base. The sidewall of the protruding claw base is connected with a protruding claw through a rotating pin in a rotating mode. The sidewall of the protruding claw base is provided with a window corresponding to the protruding claw. The end of the fishing rod is provided with a torsion spring which is used for elastically pushing the protruding claw to rotate around the rotating pin. Under the action of the torsion spring, the claw end of the protruding claw extends out of the window and is fixed to the wellbore in a clamped mode. An elastic reset mechanism is further arranged between the fishing rod and the connecting sleeve.
Description
Technical field
The utility model relates to extracting device of oil field, and particularly a kind of penetrating adopted connection and made the back throwing type blanking plug of pump.
Background technology
In prior art, due to the seal of perforating oil production pump blanking plug, in the process of going into the well, be easily damaged, affect sealing performance; The location locking mechanism of blanking plug lacks safe unlocking structure, often causes blanking plug accidental unlocking in down-hole cannot normally take a seat or use, and has affected to penetrate to adopt to join to construct.Also having the special blanking plug of a class is all generally shutoff oil pipe inner passage, prevents that the high-pressure fluid of down-hole from producing the even situation of blowout of overflow in tubing string, is applicable to the maintenance activity of hydraulic oil well, adopts combination operation process but be not suitable for to penetrate.
Utility model content
The problem that the utility model exists for prior art, provides a kind of penetrating to adopt connection and make the back throwing type blanking plug of pump, is intended to improve sealing performance and the locking property of perforating oil production pump blanking plug, improves the reliability of perforating oil production pump.
The purpose of this utility model is to realize like this, a kind of penetrating adopted connection and made the back throwing type blanking plug of pump, comprise fishing rod, described fishing rod periphery engage sleeves is provided with adapter sleeve and fixes by the safety pin radially arranging, described adapter sleeve sidewall is provided with the radially connecting hole of being convenient to be connected with pumping pipe string, between described adapter sleeve Lower Half and fishing rod periphery, be provided with annular space and lower end internal thread is connected dog seat, the described dog seat lower thread seal that is tightly connected, described seal is provided with outward with the seal of pit shaft sealing with for pressing solidly the pressure ring of seal, described fishing rod lower end is stretched in dog seat, on the sidewall of described dog seat, be rotatably connected to dog by shipping and reselling on another market, the sidewall of described dog seat is provided with window corresponding with dog, the end of described fishing rod be provided with for resiliency urged dog rotate pin rotate torsion spring, described dog stretches out outside window and fixes with pit shaft at the effect lower claw end of torsion spring, between described fishing rod and adapter sleeve, be also provided with flexible restoring organ.
Of the present utility model penetrating adopted connection and made the back throwing type blanking plug of pump, and when use, pump barrel enters before well, first take out blanking plug, until pump barrel enter well, cross pump school dark after, then the adapter sleeve of blanking plug is connected by pin with sucker rod plunger bottom, follow sucker rod and go into the well and take a seat together.After blanking plug is taken a seat, locate by dog, the torsion spring resiliency urged dog of the fishing rod lower end pin that rotates rotates and makes pawl end stretch out the outer and well bore wall of dog seat window against fixing, fishing rod and adapter sleeve are by safety pin fixing and locking simultaneously, the release to prevent dog reversion, thereby realize firmly locking, prevent that blanking plug is in down-hole vibration; Now seal and well bore wall seal to realize down-hole sealing and stop up function, carry sucker rod on then, cut off it and realize separating of plunger and blanking plug with the pin of adapter sleeve.Therefore blanking plug of the present utility model, fixing, sealing and retaining mechanism are solid and reliable, have improved to penetrate and have adopted the success rate that connection work is constructed, and are of value to penetrating and adopt applying of combination operation process.
For ease of locking and the release of blanking plug, described flexible restoring organ comprises the back-moving spring and the stop collar that are arranged between adapter sleeve and fishing rod, described stop collar upper end be provided with can with dog seat upper surface against outer step, the lower end of stop collar is provided with the interior step coordinating with fishing rod lower, outer perimeter, and the fishing rod periphery of described interior step top is provided with the outer step with interior step clamping.The flexible restoring organ of this structure, in the annular space of back-moving spring resilient abutment between fishing rod and adapter sleeve.In the time of needs release, first trip out sucker rod, lower special fishing tool is caught fishing rod again, then on, carry salvaging roofbolt, cut off the safety pin between fishing rod and adapter sleeve, the elastic force effect of back-moving spring makes to produce relative displacement between fishing rod and adapter sleeve, removes the torsional interaction of fishing rod bottom torsion spring to dog, thereby make in dog rotary pawl end retraction dog seat, then on carry salvage roofbolt blanking plug is promoted to well head.
For further improving the sealing performance of blanking plug, described seal comprises sealing ring one and the sealing ring two that to be equipped with in the cross section of seal periphery be dove-tail form, described seal periphery correspondence is provided with dovetail groove one and dovetail groove two, the fixing downside of ramp of described dovetail groove one is provided with the pressure ring one being threaded with seal for crush seal circle one lower inclined plane, and it is fixing by pressure ring two extruding that are threaded with seal that described sealing ring two is arranged on lower end and the lower inclined plane of pressure ring one.The seal of this structure is arranged to dove-tail form, and the magnitude of interference of sealing ring can suitably regulate by pressure ring one and pressure ring two so that realize and the positiver sealing of pit shaft, avoids seal entering in well process to come off, thereby has improved the sealing performance of blanking plug.
For preventing pressure ring vibration, described pressure ring one and pressure ring two screw rear respectively by pin rivet clasp with seal screw thread.
Brief description of the drawings
Fig. 1 is that of the present utility model penetrating adopted connection and made the back throwing type plug structure schematic diagram of pump.
Wherein, 1 fishing rod; 2 adapter sleeves; 3 safety pins; 4 stop collars; 5 back-moving springs; 6 dog seats; 7 torsion springs; 8 ship and resell on another market; 9 dogs; 10 seals; 11 sealing rings one; 12 pins; 13 pressure rings one; 14 sealing rings two; 15 pressure rings two.
Detailed description of the invention
Being illustrated in figure 1 of the present utility model penetrating adopts connection and makes the back throwing type blanking plug of pump, comprise fishing rod 1, fishing rod 1 periphery engage sleeves is provided with adapter sleeve 2 fixing by the safety pin 3 radially arranging, adapter sleeve 2 sidewalls are provided with the radially connecting hole of being convenient to be connected with pumping pipe string, between adapter sleeve 2 Lower Halves and fishing rod 1 periphery, be provided with annular space and lower end internal thread is connected dog seat 6, the dog seat 6 lower thread seal 10 that is tightly connected, seal 10 is outer to be provided with the seal of pit shaft sealing with for pressing solidly the pressure ring of seal, fishing rod 1 lower end is stretched in dog seat 6, on the sidewall of dog seat 6,8 be rotatably connected to dog 9 by shipping and reselling on another market, the sidewall of dog seat 6 is provided with window corresponding with dog 9, the end of fishing rod 1 is provided with for resiliency urged dog 6 torsion spring 7 that pin 8 rotates that rotates, dog 9 stretches out outside window and fixes with pit shaft at the effect lower claw end of torsion spring 7, between fishing rod 1 and adapter sleeve 2, be also provided with flexible restoring organ, wherein, flexible restoring organ comprises the back-moving spring 5 and the stop collar 4 that are arranged between adapter sleeve 1 and fishing rod 2, stop collar 4 upper ends be provided with can with dog seat 6 upper surfaces against outer step, the lower end of stop collar 4 is provided with the interior step coordinating with fishing rod 1 lower, outer perimeter, and fishing rod 1 periphery of interior step top is provided with the outer step with interior step clamping, seal comprises sealing ring 1 and the sealing ring 2 14 that to be equipped with in the cross section of seal 10 peripheries be dove-tail form, seal 10 periphery correspondences are provided with dovetail groove one and dovetail groove two, the fixing downside of ramp of dovetail groove one is provided with and is threaded with seal 10 for the pressure ring 1 of crush seal circle one 11 lower inclined planes, and it is fixing by pressure ring 2 14 extruding that are threaded with seal 10 that sealing ring 2 14 is arranged on lower end and the lower inclined plane of pressure ring 1.For preventing pressure ring vibration, pressure ring 1 and pressure ring 2 15 screw rear respectively by pin 12 rivet clasps with seal 10 screw threads.
Blanking plug of the present utility model, when use, pump barrel enters before well, first takes out blanking plug, until pump barrel enter well, cross pump school dark after, then the adapter sleeve of blanking plug 2 is connected by pin with oil pick-up tube plunger bottom, follow sucker rod and go into the well and take a seat together.After blanking plug is taken a seat, locate by dog 9, the torsion spring 7 resiliency urged dogs 9 of the fishing rod 1 lower end pin 8 that rotates rotates and makes pawl end stretch out the outer and well bore wall of dog seat 6 windows against fixing, fishing rod 1 passes through safety pin 3 fixing and lockings with adapter sleeve 2 simultaneously, to prevent that dog 9 from reversing and release, thereby realize firmly locking, prevent that blanking plug is in down-hole vibration; Now seal and well bore wall interference seals to realize down-hole sealing and stops up function, carries pumping pipe string on then, cuts off it and realizes separating of plunger and blanking plug with the pin of adapter sleeve 2.In the time of needs release
,only pumping pipe string need be connected with fishing rod, then on, carry pumping pipe string, cut off the safety pin 3 between fishing rod 1 and adapter sleeve 2, the elastic force effect of back-moving spring 5 makes to produce relative displacement between fishing rod 1 and adapter sleeve 2, remove the torsional interaction of fishing rod 1 bottom torsion spring to dog 9, thereby make in dog 9 rotary pawl end retraction dog seats 6, then on carry fishing rod blanking plug be promoted to well head.Therefore, plug structure of the present utility model, take a seat sealing and locking property are reliable, and convenient for unlocking has obviously improved to penetrate and has adopted the success rate that connection work is constructed.
The utility model is not limited to above-described embodiment; every on the basis of the disclosed technical scheme of the utility model; those skilled in the art is according to disclosed technology contents; do not need performing creative labour just can make some replacements and distortion to some technical characterictics wherein, these replacements and distortion are all in the scope of the utility model protection.
Claims (4)
1. a back throwing type blanking plug, it is characterized in that, comprise fishing rod, described fishing rod periphery engage sleeves is provided with adapter sleeve and fixes by the safety pin radially arranging, described adapter sleeve sidewall is provided with the radially connecting hole of being convenient to be connected with pumping pipe string, between described adapter sleeve Lower Half and fishing rod periphery, be provided with annular space and lower end internal thread is connected dog seat, the described dog seat lower thread seal that is tightly connected, described seal is provided with outward with the seal of pit shaft sealing with for pressing solidly the pressure ring of seal, described fishing rod lower end is stretched in dog seat, on the sidewall of described dog seat, be rotatably connected to dog by shipping and reselling on another market, the sidewall of described dog seat is provided with window corresponding with dog, the end of described fishing rod be provided with for resiliency urged dog rotate pin rotate torsion spring, described dog stretches out outside window and fixes with pit shaft at the effect lower claw end of torsion spring, between described fishing rod and adapter sleeve, be also provided with flexible restoring organ.
2. back throwing type blanking plug according to claim 1, it is characterized in that, described flexible restoring organ comprises the back-moving spring and the stop collar that are arranged between adapter sleeve and fishing rod, described stop collar upper end be provided with can with dog seat upper surface against outer step, stop collar lower end is provided with the interior step coordinating with fishing rod lower, outer perimeter, and the fishing rod periphery of described interior step top is provided with the outer step with interior step clamping.
3. back throwing type blanking plug according to claim 2, it is characterized in that, described seal comprises sealing ring one and the sealing ring two that to be equipped with in the cross section of seal periphery be dove-tail form, described seal periphery correspondence is provided with dovetail groove one and dovetail groove two, the fixing downside of ramp of described dovetail groove one is provided with the pressure ring one being threaded with seal for crush seal circle one lower inclined plane, and it is fixing by pressure ring two extruding that are threaded with seal that described sealing ring two is arranged on lower end and the lower inclined plane of pressure ring one.
4. back throwing type blanking plug according to claim 3, is characterized in that, described pressure ring one and pressure ring two screw rear respectively by pin rivet clasp with seal screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420257879.3U CN203847053U (en) | 2014-05-20 | 2014-05-20 | Afterward throw-in type blanking plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420257879.3U CN203847053U (en) | 2014-05-20 | 2014-05-20 | Afterward throw-in type blanking plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203847053U true CN203847053U (en) | 2014-09-24 |
Family
ID=51560087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420257879.3U Expired - Lifetime CN203847053U (en) | 2014-05-20 | 2014-05-20 | Afterward throw-in type blanking plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203847053U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111751740A (en) * | 2019-03-29 | 2020-10-09 | 深圳市瑞能实业股份有限公司 | Locking mechanism and test equipment |
-
2014
- 2014-05-20 CN CN201420257879.3U patent/CN203847053U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111751740A (en) * | 2019-03-29 | 2020-10-09 | 深圳市瑞能实业股份有限公司 | Locking mechanism and test equipment |
| CN111751740B (en) * | 2019-03-29 | 2023-07-28 | 深圳市瑞能实业股份有限公司 | Locking mechanism and test equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140924 |