CN111411925A - Adjustable blanking plug of chemical flooding separate injection well - Google Patents
Adjustable blanking plug of chemical flooding separate injection well Download PDFInfo
- Publication number
- CN111411925A CN111411925A CN202010218490.8A CN202010218490A CN111411925A CN 111411925 A CN111411925 A CN 111411925A CN 202010218490 A CN202010218490 A CN 202010218490A CN 111411925 A CN111411925 A CN 111411925A
- Authority
- CN
- China
- Prior art keywords
- sleeve
- screw
- connecting sleeve
- adjustment
- blanking plug
- 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.)
- Pending
Links
- 238000002347 injection Methods 0.000 title claims abstract description 9
- 239000007924 injection Substances 0.000 title claims abstract description 9
- 239000000126 substance Substances 0.000 title claims abstract description 7
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims 1
- 238000000605 extraction Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
Abstract
The invention relates to the technical field of oil extraction engineering of oil fields, and belongs to an adjustable plug of a chemical flooding separate injection well applied to the oil field. The invention is designed for solving the problems of long deployment time, long adjustment distance, low adjustment efficiency, incapability of changing over-current clearance and the like of the existing blanking plug. The novel adjustable throttle valve is composed of an adjusting rod (1), a connecting sleeve (2), a sleeve (3), a sealing ring (4), an overload spring (5), a baffle (6), an M3 screw (7), a connecting rod (8), an M4 screw (9), a throttle core (10) and a lower connecting sleeve (11). The invention can realize the quick adjustment of the layered flow and has the advantages of short adjustment distance, high adjustment speed, variable overcurrent clearance and the like.
Description
Technical Field
The invention relates to the technical field of oil extraction engineering of oil fields, and belongs to an adjustable plug of a chemical flooding separate injection well applied to the oil field.
Background
At present, the conventional annular pressure reduction groove blanking plug is mainly used for layered flow allocation of the chemical flooding multilayer separate injection well, the aim of flow adjustment is achieved mainly by means of repeated throwing and fishing of constructors and replacement of the pressure reduction grooves, and continuous adjustment cannot be achieved in the mode; in addition, partial injection wells use partial pressure plugs, although continuous adjustment can be achieved, the adjustment distance of the partial pressure plugs needs to be long in 76mm adjustment distance, the adjustment time is long in 40 minutes for full-scale adjustment, solution overflowing gaps cannot be changed, the solution can flow out of the liquid outlet after flowing through parts such as guide pins, springs and baffles, the blocking condition is easy to occur, and therefore the mechanical structure needs to be further optimized and designed, the solution overflowing gaps are changed, the adjustment distance is shortened, and the adjustment time is shortened.
Disclosure of Invention
The invention aims to design an adjustable blanking plug of a chemical-driven separate injection well, which can change solution overflowing gaps, shorten the adjusting distance and reduce the adjusting time.
The invention is composed of an adjusting rod, a connecting sleeve, a sealing ring, an overload spring, a baffle, an M3 screw, a connecting rod, an M4 screw and a lower connecting sleeve; one end of the adjusting rod is inserted into the fishing rod of the blanking plug, the other end of the adjusting rod sequentially penetrates through the sleeve, the overload spring and the blocking piece and then is connected with the connecting rod through M3 threads, the inside and the outside of the lower part of the connecting sleeve are respectively connected with the sleeve and the lower connecting sleeve threads, the sealing ring is sleeved in the groove of the connecting sleeve, and the connecting rod is connected with the throttling core M4 threads.
The throttling core is conical, and the cone angle is parallel to the connecting sleeve.
The overload spring has an overload protection function when the upper limit position and the lower limit position are adjusted.
The invention has the following advantages:
the invention solves the problems of long deployment time, long adjustment distance, low adjustment efficiency, incapability of changing the overflowing clearance and the like of the existing blanking plug, and has the advantages of short adjustment distance, high adjustment speed and changeable overflowing clearance.
Description of the drawings: fig. 1 is a schematic structural view of the present invention.
The invention is described in further detail below with reference to the following drawings: the invention is composed of an adjusting rod 1, a connecting sleeve 2, a sleeve 3, a sealing ring 4, an overload spring 5, a baffle 6, an M3 screw 7, a connecting rod 8, an M4 screw 9, a throttling core 10 and a lower connecting sleeve 11; wherein one end of an adjusting rod 1 is inserted into the fishing rod of the blanking plug, the other end of the adjusting rod 1 sequentially penetrates through the sleeve 3, the overload spring 5 and the baffle 6 and then is connected with a connecting rod 8 through M3 threads 7, the inside and the outside of the lower part of the connecting sleeve 2 are respectively in threaded connection with the sleeve 3 and the lower connecting sleeve 11, the sealing ring 4 is sleeved into the groove of the connecting sleeve 2, and the connecting rod 8 is in threaded connection with the throttling core 10M 4.
The throttling core 10 is conical, and the conical angle is parallel to the connecting sleeve 2.
The overload spring 5 has overload protection function when adjusting the upper limit position and the lower limit position.
When the adjusting rod is adjusted in the forward direction, the adjusting rod 1 moves in the connecting sleeve 2, when the T-shaped thread of the adjusting rod is about to penetrate through the internal thread of the connecting sleeve 2, the blocking piece 6 moves to the lower end of the liquid outlet of the connecting sleeve 2, the blocking piece 6 continues to move downwards until the limit position of the liquid outlet is fixed, the adjusting rod 1 and the sleeve 3 compress the overload spring 5, the T-shaped thread of the adjusting rod 1 is completely separated from the connecting sleeve 2, solution flows through the throttling core 10 through the liquid inlet at the bottom end and then directly flows out from the liquid outlet, the flow gap between the throttling core 10 and the connecting sleeve. When the adjusting rod 1 is adjusted reversely, the T-shaped thread of the adjusting rod moves upwards under the action of the reset force of the overload spring 5 to enter the thread of the connecting sleeve 2, when the adjusting rod 1 moves to the upper end of the connecting sleeve 2, the baffle 6 extrudes the overload spring 5, when the adjusting rod 1 completely penetrates through the connecting sleeve 2, the adjusting rod 1 rotates in the connecting sleeve 2, the overload spring 5 enables the adjusting rod 1 to keep downward acting force, so that the adjusting rod can smoothly enter the connecting sleeve 2 when moving forwards conveniently, and the flow gap between the throttling core 10 and the connecting sleeve 2 is the. The blanking plug completes one-time whole-process adjustment after one forward and reverse movement, and the gap between the throttling core and the connecting sleeve is adjusted according to actual injection allocation requirements during field tests, so that the purpose of flow adjustment is achieved.
Claims (3)
1. The utility model provides an adjustable blanking plug of chemical flooding injection well which characterized in that: the device consists of an adjusting rod (1), a connecting sleeve (2), a sleeve (3), a sealing ring (4), an overload spring (5), a baffle (6), an M3 screw (7), a connecting rod (8), an M4 screw (9), a throttling core (10) and a lower connecting sleeve (11); wherein adjust pole (1) one end and insert in the blanking plug fishing rod, adjust pole (1) other end and pass sleeve (3), overload spring (5), be connected with connecting rod (8) through M3 screw (7) behind separation blade (6) in proper order, inside and outside respectively with sleeve (3) in adapter sleeve (2) lower part, lower adapter sleeve (11) threaded connection, sealing washer (4) embolias adapter sleeve (2) groove, connecting rod (8) are connected with throttle core (10) M4 screw (9).
2. The adjustable plug of the chemical-flooding dispensing well according to claim 1, characterized in that: the throttling core (10) is conical, and the cone angle is parallel to the connecting sleeve (2).
3. A chemical-flooding dispensing well adjustable packer as claimed in claim 1. The method is characterized in that: the overload spring (5) has overload protection function when adjusting the upper limit position and the lower limit position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010218490.8A CN111411925A (en) | 2020-03-25 | 2020-03-25 | Adjustable blanking plug of chemical flooding separate injection well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010218490.8A CN111411925A (en) | 2020-03-25 | 2020-03-25 | Adjustable blanking plug of chemical flooding separate injection well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111411925A true CN111411925A (en) | 2020-07-14 |
Family
ID=71489242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010218490.8A Pending CN111411925A (en) | 2020-03-25 | 2020-03-25 | Adjustable blanking plug of chemical flooding separate injection well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111411925A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1598242A (en) * | 2004-07-28 | 2005-03-23 | 大庆油田有限责任公司 | Apparatus for controlling polymer molecular weight and flow of multiple-layer separate filling into with polymer displacement |
| CN102733788A (en) * | 2012-04-16 | 2012-10-17 | 中国石油天然气股份有限公司 | Novel electric pressure measuring and regulating device for chemical flooding injection well |
| CN108999601A (en) * | 2018-07-26 | 2018-12-14 | 中国石油天然气股份有限公司 | A kind of chemical flooding dispensing well zonal flow rate deployment device and concocting method |
-
2020
- 2020-03-25 CN CN202010218490.8A patent/CN111411925A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1598242A (en) * | 2004-07-28 | 2005-03-23 | 大庆油田有限责任公司 | Apparatus for controlling polymer molecular weight and flow of multiple-layer separate filling into with polymer displacement |
| CN102733788A (en) * | 2012-04-16 | 2012-10-17 | 中国石油天然气股份有限公司 | Novel electric pressure measuring and regulating device for chemical flooding injection well |
| CN108999601A (en) * | 2018-07-26 | 2018-12-14 | 中国石油天然气股份有限公司 | A kind of chemical flooding dispensing well zonal flow rate deployment device and concocting method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108061069B (en) | Buffer overflow valve | |
| CN110029974B (en) | Pre-tightening adjustable constant-current blanking plug | |
| CN111411925A (en) | Adjustable blanking plug of chemical flooding separate injection well | |
| CN201475456U (en) | Liquid constant flow regulating valve | |
| CN102904193A (en) | Tightening device of insulator replacement device | |
| CN202990989U (en) | Oil and gas well pressure priming device with small diameter of 38 millimeters | |
| CN115929216B (en) | Length-adjustable water lock type drilling machine of drill rod and adjusting method | |
| CN111852421B (en) | Large differential pressure separated injection multi-stage regulation and control water distributor | |
| CN101806205A (en) | Adjustable constant-flow multifunctional blanking plug | |
| CN103775438A (en) | Overload protective valve and overload valve comprising same | |
| CN204828836U (en) | Pressure reducing valve | |
| CN206319857U (en) | A kind of well head safe control system control valve | |
| CN109026889A (en) | Buffer overflow valve | |
| CN107740790B (en) | A kind of hydraulic valve | |
| CN209145556U (en) | Expanding sand control packer | |
| CN204512646U (en) | Balance cage high-differential-pressure regulating valve | |
| CN203756653U (en) | Overload protection valve and overload valve containing overload protection valve | |
| CN204646175U (en) | A kind of controllable type amplificate packer | |
| CN210948519U (en) | Water-closing drill rod | |
| CN210118120U (en) | Multistage decompression eccentric water distributor and working barrel assembly thereof | |
| CN203717511U (en) | Mass flow overflow structure for pump station overflow valve | |
| CN208734626U (en) | A kind of oil inlet valve block | |
| CN104196794A (en) | Pressure reducing valve | |
| CN201620814U (en) | Constant-flow adjustable multifunctional stopper | |
| CN204283279U (en) | A kind of screw rod drilling tool bypass valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200714 |