CN107916910A - Independent hydraulic control packer pressure valve - Google Patents
Independent hydraulic control packer pressure valve Download PDFInfo
- Publication number
- CN107916910A CN107916910A CN201610885077.0A CN201610885077A CN107916910A CN 107916910 A CN107916910 A CN 107916910A CN 201610885077 A CN201610885077 A CN 201610885077A CN 107916910 A CN107916910 A CN 107916910A
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- China
- Prior art keywords
- hydraulic oil
- pressure
- central tube
- hydraulic control
- piston
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/10—Valve arrangements in drilling-fluid circulation systems
- E21B21/103—Down-hole by-pass valve arrangements, i.e. between the inside of the drill string and the annulus
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/126—Packers; Plugs with fluid-pressure-operated elastic cup or skirt
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (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)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses independent hydraulic control packer pressure valve, including central tube, overcoat, check valve, pressure relief device, the overcoat empty set forms hydraulic control oil stream annular space on the outside of central tube and between the two, central tube upper end outer wall sets the annular table of evagination, the outer set upper side is connected to annular table outer wall, the annular table sets individually axial upper hydraulic oil channel, the overcoat lower end opens up individually axial lower hydraulic oil channel, the upper hydraulic oil channel, lower hydraulic oil channel is connected with hydraulic control oil stream annular space, the upper hydraulic oil channel lower port connection can only defluent check valve, the center pipe outer wall is additionally provided with pressure relief device.The present invention realizes hydraulic oil traffic organising in liquid controling pipe line using the design of built-in hydraulic oil single fluid, realize that pressure valve double wall chamber is controlled with oil pipe channel switch using double-piston linkage design at the same time, meet the requirement of marine hydraulically-controlled type packer underground quick pressure releasing deblocking.
Description
Technical field
The present invention relates to marine water injection well completion construction downhole tool, specifically independent hydraulic control packer pressure valve.
Background technology
The marine chengdao oilfield main force's oil reservoir Guantao group anisotropism of triumph is strong, stratum interlayer pressure difference is big, easily shakes out, to layering
The reliability of water injection technology proposes the technical requirements of higher.Meanwhile tidal zone oilfield is developed using high-inclination directional well more, platform
Narrow and small, operation maintenance and follow-up test acidifying etc. are costly, more demanding to the long-term effect of stratified injection water technology.It is independent at present
Hydraulically-controlled type stratified injection water technology at sea has the applicability and long-term effect of bigger in water injection well, is implemented on a large scale
Using.Supporting packer is mainly independent hydraulic control amplificate packer and independent hydraulic control compression packer with the water injection string, is risen
To the effect of oil-separating layer and huge discharge anti-flushing well.Downhole packer is mainly controlled by the liquid controling pipe line independently of oil pipe
Working status, suppresses liquid controling pipe line in well head and realizes packer setting or realize removing seal for packer to liquid controling pipe line pressure release.And
In the case of hydraulic oil is specific, pressure regulation operation is carried out to liquid controling pipe line in well head, is influenced by liquid controling pipe line overall length, it is narrow and small logical
Hydraulic oil frictional resistance is very big in the liquid controling pipe line in footpath, and the hydraulic oil pressure in shaft bottom is difficult quickly to be uploaded to well especially in pressure leak process
Mouthful, i.e., wellhead fluid control line pressure is 0MPa, and the larger pressure difference that sets is still subject at downhole packer, causes packer cannot
Unseal and pit shaft well-flushing construction can not be carried out.Thus, a kind of independent hydraulic control packer pressure valve need to be invented, is meeting ground control
While packer setting state, the hydraulic oil of liquid controling pipe line retains isolation, lower section hydraulic control above pressure valve when realizing anti-flushing well
The hydraulic oil of pipeline quickly discharges pressure release, is the efficient of chengdao oilfield to complete the quick deblocking of underground independence hydraulic control packer
Exploitation and continuously steady production provide technical support.
The content of the invention
It is an object of the invention to provide independent hydraulic control packer pressure valve, is designed and realized using built-in hydraulic oil single fluid
Hydraulic oil traffic organising in liquid controling pipe line, while pressure valve double wall chamber and oil pipe channel switch are realized using double-piston linkage design
Control, meets the requirement of marine hydraulically-controlled type packer underground quick pressure releasing deblocking.
In order to achieve the above objectives, present invention employs following technical solution, independent hydraulic control packer pressure valve, including in
Heart pipe, overcoat, check valve, pressure relief device, the overcoat empty set form hydraulic control oil stream annular space on the outside of central tube and between the two,
Central tube upper end outer wall sets the annular table of evagination, and the outer set upper side is connected to annular table outer wall, and the annular table is set
Individually axial upper hydraulic oil channel is put, the overcoat lower end opens up individually axial lower hydraulic oil channel, the upper hydraulic oil
Passage, lower hydraulic oil channel are connected with hydraulic control oil stream annular space, and the upper hydraulic oil channel lower port connection can only be defluent
Check valve, the center pipe outer wall are additionally provided with pressure relief device.
The check valve includes connector sleeve, ball seat, steel ball, little spring set, little spring, and the ball seat upper end passes through connector sleeve
Hydraulic oil channel lower port in connection, the ball seat have a perforation center cavity, and ball seat center cavity upper port sets steel ball, even
Female connector lower port internal diameter is less than the diameter of steel ball, and steel ball is headed on by the little spring of lower section, and little spring bottom is connected to ball seat center
In the chuck that chamber lower end is set.
The pressure relief device includes cylinder body, upper piston, lower piston, the cylinder body be sleeved on the outside of central tube and with central tube it
Between form pressure-releasing chamber, the inside undergauge in the continuous both sides in overcoat lower end, forms time bottom undergauge section and bottom undergauge section, its midsole
End undergauge section is connected with basepipe seal, and the lower hydraulic oil channel is opened in time bottom undergauge section, the secondary bottom undergauge
Lower piston chamber is formed between section and central tube, the lower piston is arranged in lower piston chamber, lower piston upper end connection upper piston, institute
Upper piston upper end is stated to stretch into the pressure-releasing chamber of cylinder interior.
Big spring is set in the pressure-releasing chamber, and big spring lower end connection upper piston, upper end is withstood in cylinder body upper end on step.
Packing is set between the upper piston and lower piston, packing pressure ring is set on packing.
The secondary bottom undergauge section opens up radial direction limbers connection lower piston bottom of chamber end, on the central tube and lower piston
Open up matched oil-through-hole.
The central tube also opens up relief hole, is connected to pressure-releasing chamber upper end position.
Compared to the prior art, the invention has the advantages that：
On water filling well completion technique tubular pile, pressure valve and independence at different levels at sea are concatenated by independent liquid controling pipe line by the present invention
Hydraulic control packer.Pressure valve is designed using built-in single fluid, realizes and isolation single fluid is retained in the range of design switch DP
The hydraulic oil of top liquid controling pipe line, avoids hydraulically-controlled type packer and sets abrasion halfway in work progress of going into the well, eliminate at the same time
During anti-flushing well above pressure valve in liquid controling pipe line hydraulic oil frictional resistance influence；Meanwhile linked using setting double-piston
Body designs, and promotes piston stroking upward by anti-flushing well oil jacket annular space hydraulic coupling and gangs up outside pressure valve oil stream and drain pressure passageway, completes
The supporting packer quick pressure releasing deblocking in underground, improves anti-flushing well operation timeliness.
Brief description of the drawings
Fig. 1 is the structure diagram of the independent hydraulic control packer pressure valve of the present invention；
Fig. 2 is marine independent hydraulically-controlled type separate layer water injection string schematic diagram.
In figure：Central tube 1, overcoat 2, connector sleeve 3, ball seat 4, steel ball 5, little spring 6, little spring set 7, cylinder body 8, big spring
9th, upper piston 10, packing pressure ring 11, packing 12, lower piston 13；
Casing 14, oil pipe 15, liquid controling pipe line 16, pressure valve 17, independent hydraulic control packer 18, injection well downhole flow regulator 19, flushing valve 20,
Silk plug 21.
Embodiment
Detailed description for the present invention and technology contents, coordinate brief description of the drawings it is as follows, but attached drawing only provide reference with
Purposes of discussion, is not used for being any limitation as the present invention.
According to Fig. 1, independent hydraulic control packer pressure valve, including central tube 1, overcoat 2, single fluid, double-piston linkage body, institute
State overcoat 2 to be sleeved on central tube 1,2 upper end of overcoat and 1 screwed connection of central tube, 2 lower end of overcoat and 1 cushion rubber interference of central tube are close
Envelope coordinates, and the single fluid is made of connector sleeve 3, little spring set 7, steel ball 5, ball seat 4, little spring 6, the double-piston linkage body
It is made of upper piston 10, lower piston 13, big spring 9, cylinder body 8, the hydraulic oil of the single fluid and 1 upper end of central tube, which is matched somebody with somebody, to be drilled through
Screwed connection, the double-piston linkage body is sleeved on central tube 1 and cylinder body 8 and 1 screwed connection of central tube.
1 top of central tube and bottom are tubing thread screw thread, are connected with the oil pipe thread in completion tubular column.
It is common button screw thread on the outside of 1 upper end of central tube, aprons slot and built-in cushion rubber, central tube 1 is equipped with below screw thread
It is connected with 2 threaded upper ends of overcoat and forms cushion rubber interference fit.
1 upper end of central tube is connected above the passage with hydraulic oil channel is drilled with liquid controling pipe line by NPT connectors, is led to
Commonly detain below road and is threadedly coupled and built-in cushion rubber formation cushion rubber is interference fitted with single fluid.
The 1 middle specific location of central tube is respectively provided with circumferential uniformly distributed upper limbers, lower oil-through-hole, and upper limbers is used
In the liquid discharge in cylinder body 8, lower oil-through-hole is used to cooperatively form hydraulic oil oil stream pressure release passage with 13 oil-through-hole of lower piston.
Commonly to buckle screw thread, lower end inside is equipped with aprons slot and built-in cushion rubber, is formed with central tube 1 for 2 upper end of overcoat
Cushion rubber is interference fitted.
2 lower end of overcoat axially with hydraulic oil channel is drilled with, is connected below the passage with liquid controling pipe line by NPT connectors.
2 lower end of overcoat is equipped with circumferential uniformly distributed limbers.
The connector sleeve 3 is commonly buckled with little spring set 7 and is threadedly coupled, and is filled with rubber tee 4 between two pieces in gap.
The little spring covers 7 bottoms and is provided with axial oil-through-hole.
The little spring set 7 is built-in with steel ball 5, little spring 6, and little spring 6 has the compression stress of design load, is maintained at one
Steel ball 5 is located in 4 interior sealing of ball seat under fixed switch DP, to prevent under the hydraulic oil above the pressure valve in liquid controling pipe line
OK；When wellhead fluid control line is suppressed more than switch DP, steel ball 5 promotes 6 downlink of little spring, opens hydraulic oil oil flow channel；When
During wellhead fluid control line pressure release, steel ball 5 is located in 4 interior sealing of ball seat under small spring force effect, blocks hydraulic oil data feedback channel.
Commonly button is threadedly coupled for the upper piston 10, lower piston 13, and upper lower piston connection gap is filled with T-shaped packing
12nd, packing pressure ring 11, and T-shaped packing 12 is connected by screw buckle and compressed.
13 lower end inside of lower piston and outside are respectively provided with twice aprons slot, and are formed respectively with central tube 1, overcoat 2
Cushion rubber is interference fitted.
13 upper end of lower piston is equipped with circumferential oil-through-hole, and 13 bottom of lower piston is withstood on the inside of 2 bottom of overcoat.
On the inside of 10 upper end of upper piston and outside is respectively provided with twice aprons slot, and is formed respectively with central tube 1, cylinder body 8
Cushion rubber is interference fitted.
The 10 inner side cushion rubber of upper piston is located at the upper and lower ends of 1 time oil-through-hole of central tube with the T-shaped packing 12 installation time-division.
The cylinder body 8 is sleeved on central tube 1, on upper piston 10, and commonly button is threadedly coupled cylinder body 8 with central tube 1, screw thread top
Equipped with aprons slot and built-in cushion rubber, cushion rubber interference fit is formed with central tube 1.
8 inner wall of cylinder body is equipped with ladder platform, and double-piston links body when sleeve hydraulic pushes dynamic go upward at ladder platform,
1 time oil-through-hole of 13 oil-through-hole of lower piston and central tube is kept radially to align.
Big spring 9 built in annular space between the cylinder body 8 and central tube 1, the compression with design load when big spring 9 is installed
Power, keeps double-piston linkage body bottom to withstand on the inside of 2 bottom of overcoat.
The specifically used method of the present invention：As shown in Figure 1 and Figure 2.
Completion tubular column tripping in process：When operation field is constructed, first by silk plug, flushing valve, injection well downhole flow regulator at different levels, independence at different levels
The completion tools such as hydraulic control packer, pressure valve are serially connected on oil pipe by design requirement and are lowered into successively in casing；At the same time with one
Single liquid controling pipe line is connected in series packers at different levels and pressure valve by NPT connectors, until connecting liquid controling pipe line at well head
Connect pressure gauge and pressure device.Pressure valve isolates the hydraulic oil in its top liquid controling pipe line by single fluid, avoids passing under oil pressure
Packer is caused to be set in midway of going into the well.
Packer setting process：Liquid controling pipe line pressure is suppressed to design pressure value at the well head of ground, works as well head pressure
When starting pressure more than pressure valve, steel ball promotes little spring downlink, and single fluid oil flow channel is opened, and hydraulic oil passes through the axis of overcoat
Packer is downwardly into hydraulic oil channel, completes packer setting, realizes each oil reservoir sealing lamination.
Anti-flushing well, deblocking process：By liquid controling pipe line pressure pressure release to 0MPa at the well head of ground, steel in pressure valve single fluid
Ball is located in rubber tee interior sealing, and the hydraulic oil of liquid controling pipe line above pressure valve is isolated with oil stream below, is eliminated
The frictional resistance of hydraulic oil influences above pressure valve.The backwash hydraulic pressure in oil jacket annular space enters control by the limbers of overcoat lower end at the same time
Pressure valve promotes piston stroking upward, until lower piston oil-through-hole is radially aligned with oil-through-hole under central tube, makes the pressure release in inflow oil pipe
Passage is ganged up, and the high pressure oil in downhole packer outside the pressure release passage by being discharged into oil pipe, until hydraulic control pipe below pressure valve
Hydraulic oil pressure in line and the hydro-cushion in the oil pipe of corresponding position, underground packing element deblockings at different levels at this time are complete, so
Backwash liquor enters by the flushing valve of underground afterwards completes huge discharge anti-flushing well in oil pipe column.Well-flushing terminates, and double-piston is by big bullet
Spring force comes downwards to original position, and pressure release passage simultaneously closes off.
The foregoing is merely presently preferred embodiments of the present invention, is not used to limit the scope of the claims of the present invention, other are with this
The equivalence changes of the patent spirit of invention, should all belong to the scope of the claims of the present invention.
Claims (7)
1. independent hydraulic control packer pressure valve, it is characterised in that described outer including central tube, overcoat, check valve, pressure relief device
Empty set is covered on the outside of central tube and forms hydraulic control oil stream annular space between the two, and central tube upper end outer wall sets the annular of evagination
Platform, the outer set upper side are connected to annular table outer wall, and the annular table sets individually axial upper hydraulic oil channel, the overcoat
Lower end opens up individually axial lower hydraulic oil channel, the upper hydraulic oil channel, lower hydraulic oil channel with hydraulic control oil stream annular space
Connection, the upper hydraulic oil channel lower port connection can only defluent check valve, the center pipe outer wall is additionally provided with pressure release
Device.
2. independent hydraulic control packer pressure valve according to claim 1, it is characterised in that the check valve includes connection
Set, ball seat, steel ball, little spring set, little spring, the ball seat upper end connect upper hydraulic oil channel lower port, institute by connector sleeve
State ball seat and steel ball is set with a perforation center cavity, ball seat center cavity upper port, connector sleeve lower port internal diameter is less than steel ball
Diameter, steel ball are headed on by the little spring of lower section, and little spring bottom is connected in the chuck of ball seat center cavity lower end setting.
3. independent hydraulic control packer pressure valve according to claim 1, it is characterised in that the pressure relief device includes cylinder
Body, upper piston, lower piston, the cylinder body are sleeved on the outside of central tube and pressure-releasing chamber, the overcoat lower end are formed between central tube
The inside undergauge in continuous both sides, forms time bottom undergauge section and bottom undergauge section, wherein bottom undergauge section are connected with basepipe seal,
The lower hydraulic oil channel is opened in time bottom undergauge section, and lower piston is formed between the secondary bottom undergauge section and central tube
Chamber, the lower piston are arranged in lower piston chamber, and lower piston upper end connection upper piston, cylinder interior is stretched into the upper piston upper end
Pressure-releasing chamber in.
4. independent hydraulic control packer pressure valve according to claim 3, it is characterised in that big bullet is set in the pressure-releasing chamber
Spring, big spring lower end connection upper piston, upper end is withstood in cylinder body upper end on step.
5. independent hydraulic control packer pressure valve according to claim 3, it is characterised in that the upper piston and lower piston it
Between packing is set, packing pressure ring is set on packing.
6. independent hydraulic control packer pressure valve according to claim 3, it is characterised in that the secondary bottom undergauge section opens up
Radial direction limbers connects lower piston bottom of chamber end, and matched oil-through-hole is opened up on the central tube and lower piston.
7. independent hydraulic control packer pressure valve according to claim 6, it is characterised in that the central tube also opens up pressure release
Hole, is connected to pressure-releasing chamber upper end position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610885077.0A CN107916910B (en) | 2016-10-10 | 2016-10-10 | Independent hydraulic control packer pressure control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610885077.0A CN107916910B (en) | 2016-10-10 | 2016-10-10 | Independent hydraulic control packer pressure control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107916910A true CN107916910A (en) | 2018-04-17 |
| CN107916910B CN107916910B (en) | 2020-07-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610885077.0A Active CN107916910B (en) | 2016-10-10 | 2016-10-10 | Independent hydraulic control packer pressure control valve |
Country Status (1)
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| CN (1) | CN107916910B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109339734A (en) * | 2018-10-23 | 2019-02-15 | 天津泊荣石油科技发展有限公司 | A kind of packer for annular space pipeline |
| CN109779569A (en) * | 2019-03-26 | 2019-05-21 | 中国石油化工股份有限公司 | A kind of water filling gas injection unidirectional device |
| CN113294119A (en) * | 2020-02-21 | 2021-08-24 | 中国石油天然气股份有限公司 | Packer and well completion structure |
| CN116556878A (en) * | 2023-05-24 | 2023-08-08 | 东营市福利德石油科技开发有限责任公司 | Packer capable of being set and unset repeatedly |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109339734A (en) * | 2018-10-23 | 2019-02-15 | 天津泊荣石油科技发展有限公司 | A kind of packer for annular space pipeline |
| CN109339734B (en) * | 2018-10-23 | 2023-08-18 | 天津泊荣石油科技发展有限公司 | Packer for annular pipeline |
| CN109779569A (en) * | 2019-03-26 | 2019-05-21 | 中国石油化工股份有限公司 | A kind of water filling gas injection unidirectional device |
| CN113294119A (en) * | 2020-02-21 | 2021-08-24 | 中国石油天然气股份有限公司 | Packer and well completion structure |
| CN116556878A (en) * | 2023-05-24 | 2023-08-08 | 东营市福利德石油科技开发有限责任公司 | Packer capable of being set and unset repeatedly |
| CN116556878B (en) * | 2023-05-24 | 2023-12-26 | 东营市福利德石油科技开发有限责任公司 | Packer capable of being set and unset repeatedly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107916910B (en) | 2020-07-17 |
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