CN202731826U - Constant pressure opening blanking plug for separate layer water injection - Google Patents
Constant pressure opening blanking plug for separate layer water injection Download PDFInfo
- Publication number
- CN202731826U CN202731826U CN 201220155828 CN201220155828U CN202731826U CN 202731826 U CN202731826 U CN 202731826U CN 201220155828 CN201220155828 CN 201220155828 CN 201220155828 U CN201220155828 U CN 201220155828U CN 202731826 U CN202731826 U CN 202731826U
- Authority
- CN
- China
- Prior art keywords
- blanking plug
- packer
- water injection
- constant pressure
- opened
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 238000002347 injection Methods 0.000 title claims abstract description 19
- 239000007924 injection Substances 0.000 title claims abstract description 19
- 239000000919 ceramic Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 abstract description 10
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Images
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model discloses a blanking plug is opened to level pressure for stratified injection, it throws and drags for the operation risk big, the work load is big and with high costs problem design to divide special to solve to divide the technology, has set up one promptly and has opened the piston by the fixed level pressure of pin in the inside ceramic water injection well choke upper portion of conventional bridge type eccentric blanking plug, realizes the function of temporary shutoff blanking plug. When the packer is in operation, the constant-pressure opening packer is lowered to a designed position along with a process pipe column, after the packer is fully seated, the packer is continuously and slowly pressed to the designed pressure of the packer, a pin is cut off, the packer is opened, and then normal separate-layer water injection is started. The blanking plug has the advantages of ingenious conception, simple design, safe and reliable use, low operation cost and high working efficiency. Through field tests, the process success rate is 100%, the dropping and fishing cost of a single well is saved by 6000-9000 yuan, the dropping and fishing time is saved by 5-6 hours, and the economic benefit is extremely remarkable.
Description
Technical field
The utility model relates to a kind of constant pressure turn on blanking plug for seperated layer water injection, belongs to the oilfield exploitation technical field.
Background technology
The separate layer water injection string of at present separated-zone water infection oil field well employing mainly adopts compression packer, and it sets pressure up to more than the 18MPa.In order to guarantee that packer reliably sets, when going into the well, each eccentric injection mandrel need throw dead mouth.After packer fully set, the tester went into the well the pulling instrument with logging truck, and the blanking plug of band was pulled out when each injection well downhole flow regulator was gone into the well, trip out ground, change the dead mouth of blanking plug, load onto suitable water nozzle, again blanking plug is shipped in the down-hole eccentric device, finishes the pulling allotment of one deck.For the eccentric separated-injection well, every layer needs pulling allotment 2 times, and pulling allotment workload is large, and meeting card machine can be many, if there is a layer process unsuccessful, just needs again operation, increases construction risk and corresponding expense.
Summary of the invention
The purpose of this utility model is to provide a kind of constant pressure turn on blanking plug for seperated layer water injection, it can solve the problem that eccentric separated-injection technique pulling operating risk is large, workload is large and cost is high, need not the stratified injection water technology of pulling stagnant water mouth and direct water filling behind the realization packer setting.
Concrete technical scheme of the present utility model is as follows:
Be provided with one by the fixing constant pressure turn on piston of pin on conventional bridge-type eccentric blanking plug inner ceramic water nozzle top.
This water filling constant pressure turn on stops up the method that adopts adherence pressure to setup pressure value to suppress, and cuts off pin, opens blanking plug, realizes blanking plug constant pressure turn on function.This blanking plug is skillfully constructed, simplicity of design, safe and reliable, the running cost expense is low and high efficiency.Through field trial, technique success rate 100%, individual well is saved pulling cost 6000-9000 unit, saves 5-6 hour pulling time, economic benefit and remarkable.
Description of drawings
Fig. 1 opens front structural representation for the constant pressure turn on blanking plug that is used for seperated layer water injection.
Fig. 2 is the structural representation after opening for the constant pressure turn on blanking plug of seperated layer water injection.
The specific embodiment
With reference to Fig. 1 and 2 embodiment of the present utility model is further specified:
Embodiment:
The utility model is to arrange one on the top of the ceramic water nozzle 3 of conventional bridge-type eccentric blanking plug inside by pin 1 constant pressure turn on piston 2 fixing and that be provided with the circumferential seal circle, this constant pressure turn on piston 2 is that a diameter is 11mm, thickness is the cylindric piston of 15mm, with ceramic water nozzle 3 tops in its blanking plug of packing into, adopt pin 1 fixing, realize the function of temporary transient shutoff blanking plug.Cutting off pin 1 needed oil pipe and oil jacket annulus pressure is 15-20MPa, and the required oil jacket pressure reduction of supporting packer setting is 15MPa, to guarantee that packer fully sets rear constant pressure turn on blanking plug and just moves.
The utility model adopts hammering method, namely behind packer setting, blanking plug is in not opening (shown in Figure 1), and continuing increases pressure 2-5MPa in oil pipe, destroys pin 1, constant pressure turn on piston 2 up (shown in Figure 2), blanking plug is opening, and injected water is entered by the blanking plug lower end, through ceramic water nozzle 3, enter the stratum by blanking plug outlet and injection well downhole flow regulator fluid hole at last, realize normal water filling.
In the work progress, adopt the process pipe string that is formed by CQFF03 anticorrosive paint oil pipe, PSQ-114 bridge type eccentric injection mandrel, Y341-115 low pressure set packer, ball seat, screen casing and plug from top to bottom.Process pipe string is suppressed 5MPa, 8MPa, 10MPa and 12MPa successively behind design attitude, each voltage stabilizing 5min fully sets packer, and Pressure Drop is qualified less than 0.5MPa.After packer fully sets, continue slowly to suppress to 20MPa, the cementing truck gauge hand has obvious falling in the process if suppress, and then explanation has a constant pressure turn on piston to open.By that analogy, continue to suppress to 20MPa, until after all constant pressure turn on pistons 2 all open, begin normal seperated layer water injection.
Claims (1)
1. constant pressure turn on blanking plug that is used for seperated layer water injection is characterized in that:
Be provided with one by the fixing constant pressure turn on piston (2) of pin (1) on conventional bridge-type eccentric blanking plug inner ceramic water nozzle (3) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220155828 CN202731826U (en) | 2012-04-13 | 2012-04-13 | Constant pressure opening blanking plug for separate layer water injection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220155828 CN202731826U (en) | 2012-04-13 | 2012-04-13 | Constant pressure opening blanking plug for separate layer water injection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202731826U true CN202731826U (en) | 2013-02-13 |
Family
ID=47657538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220155828 Expired - Fee Related CN202731826U (en) | 2012-04-13 | 2012-04-13 | Constant pressure opening blanking plug for separate layer water injection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202731826U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109267978A (en) * | 2018-09-07 | 2019-01-25 | 中国石油化工股份有限公司 | A kind of separate injection tubing string |
| CN115341884A (en) * | 2022-09-06 | 2022-11-15 | 延长油田股份有限公司 | Concentric double-pipe layered water injection process |
-
2012
- 2012-04-13 CN CN 201220155828 patent/CN202731826U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109267978A (en) * | 2018-09-07 | 2019-01-25 | 中国石油化工股份有限公司 | A kind of separate injection tubing string |
| CN115341884A (en) * | 2022-09-06 | 2022-11-15 | 延长油田股份有限公司 | Concentric double-pipe layered water injection process |
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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 |
Granted publication date: 20130213 Termination date: 20210413 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |