CN203114240U - Large-drift-diameter intubation tube oil production bridge plug - Google Patents
Large-drift-diameter intubation tube oil production bridge plug Download PDFInfo
- Publication number
- CN203114240U CN203114240U CN 201320019823 CN201320019823U CN203114240U CN 203114240 U CN203114240 U CN 203114240U CN 201320019823 CN201320019823 CN 201320019823 CN 201320019823 U CN201320019823 U CN 201320019823U CN 203114240 U CN203114240 U CN 203114240U
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- cone
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Abstract
The utility model discloses a large-drift-diameter intubation tube oil production bridge plug, and relates to the technical filed of intubation tube oil production inside a small casing pipe with the drift diameter being 82-86mm. The large-drift-diameter intubation tube oil production bridge plug comprises a connector, a spindle, an unsealing connector, a lock sleeve, a locking block, an unsealing shear pin, a setting connector, a locking ring, a Kava cone body, a Kava cylinder, a limiting ring, and a Kava. According to the large-drift-diameter intubation tube oil production bridge plug, anti-pressure performance and anti-wriggle performance are improved, the large-drift-diameter intubation tube oil production bridge plug especially suits to be used in underground long-time Kava seal oil production of high-liquid-amount oil production wells, pump detecting frequency can be lowered, and oil production cost is lowered.
Description
Technical field
The utility model relates to the intubate card envelope oil recovery technique field in 82～86mm latus rectum small casing.
Background technology
Intubate card envelope oil recovery technique in the small casing is: the slim-hole bridging plug card that recovers the oil is enclosed in the top of producing zone position, the bottom of flow string connects spile, the spile insertion is got final product production bottom oil reservoir, reach to seal up in small casing and adopt purpose down, this technology has the characteristics of activity duration weak point and instant effect.Original QSC-76 type bridging plug is the special-purpose bridging plug of non-oil recovery, its intubate latus rectum is little only 14mm, seal is little, permanently effective sealing is poor, and is simultaneously for high liquid measure producing well, bigger by intubate bridging plug frictional resistance, under high discharge capacity, move for a long time, cause the bridging plug unstability easily, cause foot bridge plug inefficacy period of validity short, so this instrument is not suitable for the long-term oil recovery production of down-hole.
Summary of the invention
The utility model purpose is to propose a kind of inspection pumping frequency time of reducing, and reduces the big latus rectum intubate oil recovery bridging plug of oil recovery cost of production.
The utility model comprises joint, is nested with the deblocking joint outside joint and mandrel, between described solution sealing joint and joint sealing ring is set, and between described solution sealing joint and mandrel the deblocking shear pin is set; It is characterized in that: at mandrel bottom arranged outside boss, mandrel arranged outside lock tube in the boss top, the upper end of lock tube is limited in the lower end of separating sealing joint, offer the lock dog hole at the sidewall of described lock tube, offer the lock dog groove at the mandrel lateral wall, in described lock dog hole lock dog is set, the inner of described lock dog is arranged in the lock dog groove, after the deblocking shear pin was cut off, described lock dog outwards ejected from the lock dog hole; The sealing shroud that is tightly connected in the lower end of described mandrel arranges packing element outside sealing shroud; Outside separating sealing joint, set joint by setting the shear pin connection, lock ring is set in setting joint, at the lock ring external surface with set ratchet and the ratchet that cooperatively interacts is set between the inner surface of joint, connect the slips cone in the lower end that sets joint, described slips cone inwall also is connected with the lower end of lock tube; Be provided with male cone (strobilus masculinus) at the mandrel external surface, the inner conical surface cooperate with described male cone (strobilus masculinus) is set at slips cone inner surface; The lower end of slips cone is the tip that protrudes downwards; Outside the mandrel of packing element upper end the slips tube is set, the upper end of slips tube is arranged on the top of the tip that is positioned at the slips cone by spacing ring; The inwall of slips tube arranges upper limit and protrudes, and the mandrel external surface above described upper limit protrudes arranges limited step; By through hole slips is set at slips tube sidewall, the inner of slips arranges the conical surface that cooperates with the tip of slips cone.
The utility model operating principle: this bridging plug and the original basically identical of conventional retrievable intubate bridging plug work, mainly divide three parts: setting mechanism, anchor mechanism and sealing mechanism.During use, the utility model is connected bridging plug setting tool lower end, and down to the downhole designs position, suppresses and set, set end after, the shear pin that sets in this utility model is cut off, and can propose the bridging plug setting tool; When the card envelope is recovered the oil, big latus rectum intubate is connected pump hanging tube column bottom, big latus rectum intubate is inserted in the bridging plug inner chamber, by eight road cushion rubbers realization sealings, set up and producing zone position, bottom communication passage, realize blocking envelope and produce; During deblocking, the bridging plug fisher is connected the tubing string lower end, down to apart from upper top 1～2m of the present utility model the time, begins flushing, when pass in and out to clear water, transfer the bridging plug fisher, load 20～30KN, the upper lifting pipe post gets final product deblocking trip out the utility model.
The utility model can increase the interior latus rectum of bridging plug, makes cannula outer diameter be increased to 36mm, and interior latus rectum is increased to 24mm; Removed former common foot bridge plug slider mechanism simultaneously, increase is also used and has been adopted wear-resisting, refractory seals spare, and the withstand voltage and anticreep performance of bridging plug is improved; The bridging plug size of main body lengthens to some extent, is increased to 1117mm by original 845mm.The utility model can make the withstand voltage and anticreep performance of bridging plug be improved, and is particularly suitable for high liquid measure producing well and blocks envelope oil recovery production in the down-hole for a long time, and it is inferior to reduce the inspection pumping frequency, has reduced the oil recovery cost of production.The field small casing card envelope is recovered the oil, and period of validity is more than 1 year.
In order to prevent down in the instrument process because pit shaft is unclean, some little sand, dirt and so on are entered in slips tube and the slips cone gap, cause slips cone stroke to advance, slips can't be opened, cause the seat envelope to be failed.The utility model also fixedly installs sand control rubber at the slips outer surface of cone that sets between joint and the slips tube.
At least two packing elements of spacer ring setting that the utility model also can arrange by the interval outside described sealing shroud, the sealing performance in the time of can improving the seat envelope.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model.
The specific embodiment
As shown in Figure 1, the utility model is nested with deblocking joint 2 outside joint 1 and mandrel 5, between solution sealing joint 2 and joint 1 multiple tracks O-ring seals 6 is set, and between solution sealing joint 2 and mandrel 5 deblocking shear pin 8 is set.
At mandrel 5 bottom arranged outside boss 5-1, the mandrel 5 arranged outside lock tubes 11 in boss 5-1 top, the upper end of lock tube 11 is limited in the lower end of separating sealing joint 2.Offer two lock dog hole 11-1 at the sidewall of lock tube 11, offer two lock dog groove 5-2 at mandrel 5 lateral walls, in each lock dog hole 11-1 a lock dog 9 is set, the inner of each lock dog 9 is arranged in the corresponding lock dog groove 5-2.After deblocking shear pin 8 was cut off, lock dog 9 outwards ejected from lock dog hole 11-1.
The sealing shroud 18 that is threaded in the lower end of mandrel 5 arranges sealing ring between mandrel 5 and sealing shroud 18.Outside sealing shroud 18, by two groups of spacer rings that arrange at interval 17 three packing elements 16 are set.
Outside separating sealing joint 2, set joint 4 by setting shear pin 3 connections, lock ring 7 is set in setting joint 4, at lock ring 7 external surfaces with set ratchet and the ratchet that cooperatively interacts is set between the inner surface of joint 4, to guarantee lock ring and lock tube locking when setting, make the bridging plug maintenance set state.
Connect slips cone 13 in the lower end that sets joint 4, slips cone 13 inwalls also are connected with the lower end of lock tube 11.Be provided with male cone (strobilus masculinus) 5-3 at mandrel 5 external surfaces, the inner conical surface 13-1 that cooperates with this male cone (strobilus masculinus) 5-3 in the 13 inner surface settings of slips cone.
The lower end of slips cone 13 is the tip 13-2 that protrudes downwards.
Outside the mandrel 5 of packing element 16 upper ends, slips tube 15 is set, the upper end of slips tube 15 spacing ring 12 that is threaded, the lower end of spacing ring 12 is arranged on the top of the tip 13-2 of slips cone 13.
The inwall of slips tube 15 arranges upper limit and protrudes 15-1, and mandrel 5 external surfaces above upper limit protrudes 15-1 arrange limited step 5-4.
By through hole slips 14 is set at slips tube 15 sidewalls, the inner of slips 14 arranges the conical surface 14-1 that cooperates with the tip 13-2 of slips cone 13.
Fixedly install sand control rubber 10 at slips cone 13 external surfaces that set between joint 4 and the slips tube 15.
Claims (3)
1. big latus rectum intubate oil recovery bridging plug comprises joint, is nested with the deblocking joint outside joint and mandrel, between described solution sealing joint and joint sealing ring is set, and between described solution sealing joint and mandrel the deblocking shear pin is set; It is characterized in that: at mandrel bottom arranged outside boss, mandrel arranged outside lock tube in the boss top, the upper end of lock tube is limited in the lower end of separating sealing joint, offer the lock dog hole at the sidewall of described lock tube, offer the lock dog groove at the mandrel lateral wall, in described lock dog hole lock dog is set, the inner of described lock dog is arranged in the lock dog groove, after the deblocking shear pin was cut off, described lock dog outwards ejected from the lock dog hole; The sealing shroud that is tightly connected in the lower end of described mandrel arranges packing element outside sealing shroud; Outside separating sealing joint, set joint by setting the shear pin connection, lock ring is set in setting joint, at the lock ring external surface with set ratchet and the ratchet that cooperatively interacts is set between the inner surface of joint, connect the slips cone in the lower end that sets joint, described slips cone inwall also is connected with the lower end of lock tube; Be provided with male cone (strobilus masculinus) at the mandrel external surface, the inner conical surface cooperate with described male cone (strobilus masculinus) is set at slips cone inner surface; The lower end of slips cone is the tip that protrudes downwards; Outside the mandrel of packing element upper end the slips tube is set, the upper end of slips tube is arranged on the top of the tip that is positioned at the slips cone by spacing ring; The inwall of slips tube arranges upper limit and protrudes, and the mandrel external surface above described upper limit protrudes arranges limited step; By through hole slips is set at slips tube sidewall, the inner of slips arranges the conical surface that cooperates with the tip of slips cone.
2. according to the described big latus rectum intubate oil recovery bridging plug of claim 1, it is characterized in that fixedly installing sand control rubber at the slips outer surface of cone that sets between joint and the slips tube.
3. according to the described big latus rectum intubate oil recovery bridging plug of claim 1, it is characterized in that at least two packing elements of spacer ring setting by arranging at interval outside described sealing shroud.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320019823 CN203114240U (en) | 2013-01-15 | 2013-01-15 | Large-drift-diameter intubation tube oil production bridge plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320019823 CN203114240U (en) | 2013-01-15 | 2013-01-15 | Large-drift-diameter intubation tube oil production bridge plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203114240U true CN203114240U (en) | 2013-08-07 |
Family
ID=48894600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320019823 Expired - Lifetime CN203114240U (en) | 2013-01-15 | 2013-01-15 | Large-drift-diameter intubation tube oil production bridge plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203114240U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275427A (en) * | 2014-06-19 | 2016-01-27 | 中国石油化工股份有限公司 | Composite bridge plug |
-
2013
- 2013-01-15 CN CN 201320019823 patent/CN203114240U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275427A (en) * | 2014-06-19 | 2016-01-27 | 中国石油化工股份有限公司 | Composite bridge plug |
| CN105275427B (en) * | 2014-06-19 | 2018-05-29 | 中国石油化工股份有限公司 | A kind of composite bridge plug |
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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: 20130807 |
|
| CX01 | Expiry of patent term |