CN110374561A - Pre-setting tool for double-tube separate injection upper layer water absorption profile measurement and use method thereof - Google Patents
Pre-setting tool for double-tube separate injection upper layer water absorption profile measurement and use method thereof Download PDFInfo
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- CN110374561A CN110374561A CN201910648437.9A CN201910648437A CN110374561A CN 110374561 A CN110374561 A CN 110374561A CN 201910648437 A CN201910648437 A CN 201910648437A CN 110374561 A CN110374561 A CN 110374561A
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- preset
- tube
- piston seat
- upper layer
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000002347 injection Methods 0.000 title abstract description 11
- 239000007924 injection Substances 0.000 title abstract description 11
- 238000010521 absorption reaction Methods 0.000 title abstract 3
- 238000005259 measurement Methods 0.000 title 1
- 238000007789 sealing Methods 0.000 claims description 24
- 238000012360 testing method Methods 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000012634 fragment Substances 0.000 claims description 3
- 230000010354 integration Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000002627 tracheal intubation Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
-
- 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/063—Valve or closure with destructible element, e.g. frangible disc
-
- 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/10—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole
-
- 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
-
- 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
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention provides a double-tube separate injection upper layer water absorption profile measuring preset tool and a using method thereof, wherein the tool consists of a preset cylinder body and a plugging device inserted into the preset cylinder body, the preset cylinder body comprises an upper joint, an overflowing sleeve, a spring, a closing piston, a piston seat component, an outer cylinder, a positioning cylinder and a lower joint, the upper joint, the overflowing sleeve, the outer cylinder and the lower joint are sequentially connected from top to bottom, the spring and the closing piston are arranged in the overflowing sleeve, one end of the spring props against the upper joint, the other end of the spring props against the upper end of the closing piston, and the lower end of the closing piston is contacted with the outer cylinder; the piston seat assembly penetrates into the outer cylinder and is connected with the upper connector, and the positioning cylinder penetrates into the lower connector and is connected with the lower connector; the outer surface of the upper part of the plugging device is sequentially attached to the upper joint and the piston seat assembly, and the outer surface of the lower part of the plugging device is hermetically attached to the positioning cylinder. The invention solves the bottleneck problem that the double-tube separate injection process can not measure the upper water absorption profile through the isotope logging process.
Description
Technical field
The invention belongs to oil extraction in oil field technical fields, and in particular to the preset work of intake profile is surveyed on a kind of two-tube dispensing upper layer
Tool.
Background technique
As going deep into for water flooding understands reservoir temperature, pressure to grasp each water filling interval condition of production in real time
Etc. basic conditions, carry out two-tube dispensing technical research.But the technology inner and outer pipes annular space is small and spatial form is irregular, existing
Logging technique not can enter, lead to not to carry out two-tube dispensing upper layer intake profile test.Currently on the market temporarily without suitable
Therefore the preset tool that intake profile is surveyed on two-tube dispensing upper layer is badly in need of such product and fills a hole in the market, fine to meet oil field
The needs of water filling.
Summary of the invention
The purpose of the present invention is to provide the preset tools that intake profile is surveyed on a kind of two-tube dispensing upper layer, solve two-tube dispensing
Technique upper layer can not survey the problem of intake profile.
Technical scheme is as follows:
The preset tool of intake profile is surveyed on a kind of two-tube dispensing upper layer, is made of preset cylinder ontology and plugging device, the plugging device
It is inserted into preset cylinder ontology；
The preset cylinder ontology include top connection, overcurrent set, spring, closure piston, piston holder assembly, outer cylinder, positioning tube, under connect
Head, the upper inner of the overcurrent set and the lower outside of top connection connect, outside the lower inside of overcurrent set and the top of outer cylinder
Side connection, the lower inside of outer cylinder are connect with lower contact；The spring, closure piston are installed in overcurrent set, and the one of spring
The lower end surface of top connection is withstood at end, and the other end of spring withstands the upper end of closure piston, and the lower end of closure piston is connect with outer cylinder；
The piston holder assembly is penetrated in outer cylinder and is connect with the lower inside of top connection, is provided with semicircle at the top of the positioning tube
Hole, positioning tube penetrate in lower contact, and connect with lower contact；
The outer surface of upper of the plugging device is successively affixed with top connection, piston holder assembly, the lower external face of plugging device and fixed
Position cylinder sealing is affixed.
The piston holder assembly is made of piston seat, starting pin and starting piston, and the starting piston is packed into piston seat
In and be located at piston seat lower part, and the starting piston by starting pin fix；The upper outside of the piston seat with it is upper
The lower inside of connector is threadedly coupled；There are flow channels between the piston seat and outer cylinder.
The piston seat is the circular cylinder structure that outer diameter is gradually incremented by from top to bottom, and the top including integration connection is living
Obturating plug and lower piston seat, the top of the lower piston seat offer pin hole, and the starting pin passes through the pin hole
Piston seat is installed in lower piston seat；The lower part of the lower piston seat is provided with flowing hole, the flowing hole and the mistake
Circulation road is connected.
The outer diameter of the piston seat is that three sections of steps are gradually incremented by.
The upper end of the positioning tube is in contact with the inner upper end of lower piston seat, the lower end of the positioning tube and lower contact
It is threadedly coupled.
The lower end of the closure piston uses inclined design, and the lower end of closure piston connects with outer cylinder, and passes through sealing
Circle one is sealed.
The lower contact is connect by screw thread with outer cylinder.
Overcurrent set top is equipped with pressure compensation opening, and the pressure compensation opening is set to top connection lower end surface and closes and lives
Overcurrent between plug is put on.
The overcurrent, which is put on, is additionally provided with multiple apopores, and multiple apopores are uniformly distributed along the excircle that overcurrent covers, and position
In the lower section of pressure compensation opening.
The plugging device is made of closure bar and sealing ring two, is provided with seal groove on the excircle for blocking bar,
Sealing ring two is provided in the seal groove, and the outside of the sealing ring two is higher by the outer circumference surface for blocking bar.
A kind of application method of the preset tool of two-tube dispensing upper layer survey intake profile, comprising the following steps: first will envelope
Stifled device be connected to logger lowest part and under into preset cylinder ontology, pass through the inner wall of the sealing ring two of plugging device and positioning tube
Sealing is formed, realizes the isolation of two-way pressure；Then ground pump truck is suppressed out of pipe, and pressure enters simultaneously from the semicircle orifice of positioning tube
Push starting piston, cutting when pressure reaches the design value of starting pin, starting piston compression downlink gets out of the way flowing hole, water flow after
Uplink is continued in the continuous gap between piston seat and outer cylinder, then pushes closure piston open, and spring, which is pressurized, at this time bounces back, and water flow is from out
Water hole enters two-tube annular space, enters back into oil jacket annulus, eventually enters into stratum, then termination of pumping, closure piston is by spring force and gravity
It acts on downlink and closes apopore, finally, above mentioning logger string to active well fragment position, carry out intake profile test job.
Beneficial effects of the present invention:
Preset tool of the present invention be suitable for two-tube zonal injection technology upper layer survey intake profile, by with two-tube dispensing Operating Pressure
Upper layer injection well downhole flow regulator (unidirectional overcurrent), big channel (internal diameter be greater than diameter of inner pipe) packer be used cooperatively, realize two-tube dispensing
The purpose of intake profile is surveyed on technique upper layer, and solving two-tube zonal injection technology can not be cutd open by radioisotope logging technique survey upper layer water suction
The bottleneck problem in face expands the application range of technique by further improving the matching technology；And has structure letter
List, the advantages such as easy construction, operation is reliable, construction risk is low.
Detailed description of the invention
The present invention is described in further details below with reference to attached drawing.
Fig. 1 is the structural schematic diagram of preset tool of the present invention；
Fig. 2 is the structural schematic diagram of plugging device of the present invention；
Fig. 3 is the structural schematic diagram of preset cylinder ontology of the present invention；
Fig. 4 is the structural schematic diagram of piston seat.
Description of symbols
1, top connection；2, overcurrent set；3, spring；4, closure piston；5, piston seat；6, outer cylinder；7, start pin；8, starting is lived
Plug；9, flowing hole；10, positioning tube；11, lower contact；12, pressure compensation opening；13, apopore；14, sealing ring one；15, preset cylinder
Ontology；16, plugging device；17, bar is blocked；18, sealing ring two；19, semicircle orifice, 20, pin hole.
Specific embodiment
In the description of the present invention, it is to be understood that, term " on ", "lower", "inner", "outside", " circumferential direction " etc. indicate
Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the present invention and simplification retouch
It states, rather than the device or part of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, because
This is not considered as limiting the invention.In addition, define " one ", " two " are used for description purposes only, and should not be understood as referring to
Show or imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Embodiment 1
The embodiment of the present invention is described further referring to attached drawing:
As shown in Figure 1, the preset tool of intake profile is surveyed on a kind of two-tube dispensing upper layer, by 16 structure of preset cylinder ontology 15 and plugging device
At the plugging device 16 is inserted into preset cylinder ontology 15；
As shown in Fig. 2, the preset cylinder ontology 15 include top connection 1, overcurrent set 2, spring 3, closure piston 4, piston holder assembly,
The upper inner of outer cylinder 6, positioning tube 10, lower contact 11, the overcurrent set 2 is connect with the lower outside of top connection 1, overcurrent set 2
Lower inside connect with the upper outside of outer cylinder 6, the lower inside of outer cylinder 6 is connect with lower contact 11；The spring 3 is closed
Piston 4 is installed in overcurrent set 2, and the lower end surface of top connection 1 is withstood in one end of spring 3, and the other end of spring 3 withstands closing and lives
The upper end of plug 4, the lower end of closure piston 4 is connect with outer cylinder 6；The piston holder assembly penetrate in outer cylinder 6 and under top connection 1
Connection, the top of the positioning tube 10 are provided with semicircle orifice 19 on the inside of portion, and positioning tube 10 penetrates in lower contact 11, and and lower contact
11 connections；
The outer surface of upper of the plugging device 16 is successively affixed with top connection 1, piston holder assembly, the lower external face of plugging device 16
It is affixed with the sealing of positioning tube 10.
The preset cylinder ontology is mounted on the intubation top of internal layer tubing string in advance, with tubing string tripping in predetermined position.It needs to survey
When the intake profile of upper layer, plugging device is connected under logger lowest part into preset cylinder ontology first, it is close by plugging device
The isolation of seal realization two-way pressure；Then ground pump truck is suppressed out of pipe, and preset cylinder ontology flow channels are opened；Then it surveys
Well instrument discharges isotope, and isotope is introduced into two-tube annular space with water flow, enters back into casing annulus, finally enters stratum；Termination of pumping
Logger string is above mentioned afterwards to active well fragment position, carries out intake profile test.
Preset tool of the present invention, be suitable for two-tube zonal injection technology upper layer survey intake profile, by with two-tube dispensing band
The upper layer injection well downhole flow regulator (unidirectional overcurrent) of operation, big channel (internal diameter that the internal diameter of outer tube is greater than outer tube) packer is pressed to be used cooperatively,
The purpose that intake profile is surveyed on two-tube zonal injection technology upper layer is realized, solving two-tube zonal injection technology can not be by radioisotope logging work
The bottleneck problem of skill survey upper layer intake profile.
Embodiment 2
On the basis of embodiment 1, further, the piston holder assembly is by 8 groups of piston of piston seat 5, starting pin 7 and starting
At the starting piston 8 is fitted into the lower part in piston seat 5 and being located at piston seat 5, and the starting piston 8 passes through starting pin 7
It is fixed；The upper outside of the piston seat 5 is threadedly coupled with the lower inside of top connection 1；Between the piston seat 5 and outer cylinder 6
There are flow channels.
As shown in figure 4, the piston seat 5 is the circular cylinder structure that outer diameter is gradually incremented by from top to bottom, including integration
The upper piston seat and lower piston seat of connection, the top of the lower piston seat offer pin hole 20, the starting pin 7
Piston seat 5 is installed in lower piston seat across the pin hole 20；The lower part of the lower piston seat is provided with flowing hole 9,
The flowing hole 9 is connected with the flow channels.
Further, the outer diameter of the piston seat 5 is that three sections of steps are gradually incremented by.
The upper end of the positioning tube 10 is in contact with the inner upper end of lower piston seat, and the lower end of the positioning tube 10 is under
Connector 11 is connected through a screw thread.
The preset tool fluid course is using design from bottom to top, when proper testing, is made every effort to overcome using pushing up for liquid stream
It takes closure piston gravity and spring force opens fluid course；After being completed, closure piston relies on the work of gravity and spring force
It is closed with downward.
Embodiment 3
On the basis of the above embodiments, further, the overcurrent covers 2 tops equipped with pressure compensation opening 12, and the pressure is flat
Weighing apparatus hole 12 is set on the set of the overcurrent between 1 lower end surface of top connection and closure piston 42.
Further, multiple apopores 13, outer circle of multiple apopores 13 along overcurrent set 2 are additionally provided on the overcurrent set 2
Week is uniformly distributed, and is located at the lower section of pressure compensation opening 12.
When closure piston 4 is carried out upwards by liquid stream, overcurrent covers 2 tops and is equipped with pressure compensation opening 12, avoids on closure piston
Portion forms " dead space ", and causing cannot normally-open apopore.
The lower end of the closure piston 4 is bevel structure, and the lower end of closure piston 4 connects with outer cylinder 6, and passes through sealing
It encloses 1 to be sealed, the sealing ring 1 is the fixing ring matched with the lower end inclined-plane of closure piston 4.It closes and lives
It fills in 4 lower ends to design using " inclined-plane+fixing ring ", normally when water filling, (outside) pressure application surface product in top is that lower part is (interior
Portion) pressure application surface product 2-4 times, guarantee external and internal pressure it is identical when closure piston can work normally.
Further, as shown in Fig. 2, the plugging device 2 is made of closure bar 17 and sealing ring 2 18, the closure bar 17
Excircle on be provided with seal groove, be provided with sealing ring 2 18 in the seal groove, and the sealing ring 2 18 is outer
Side is higher by the outer circumference surface for blocking bar 17.It is that preset 15 lower seal of cylinder ontology is realized the separation of well logging runner that it, which is acted on,.
Embodiment 4
As shown in figure 3, the installation process of the preset cylinder ontology is as follows:
Overcurrent set 2 is first connected through a screw thread by the first step with top connection 1；
Second step by spring 3 and is mounted with that the closure piston 4 of sealing ring 1 is packed into overcurrent set；
Third step connects outer cylinder 6 and closure piston 4；
Starting piston 8 is fitted into piston seat 5 by the 4th step, and is fixed with starting pin 7, by assembled piston holder assembly
(piston 8 containing starting and starting pin 7) first is placed spare；
Piston holder assembly is penetrated in outer cylinder 6 and is connected by screw thread and top connection by the 5th step.
Lower contact 11 is connect by screw thread with outer cylinder 6 by the 6th step；
7th step penetrates positioning tube 10 in lower contact, is connected by screw thread and lower contact 11, and this completes preset cylinder sheets
Whole assemblings of body.
The working principle for the preset tool that intake profile is surveyed on two-tube dispensing upper layer of the present invention is as follows: preset cylinder ontology 15
With design position in internal layer oil pipe tripping in water injection well；When needing to survey upper layer intake profile, plugging device 16 is connected to well logging first
Under instrument lowest part into preset cylinder ontology 15, formed by the sealing ring 2 18 of plugging device 16 and the inner wall of positioning tube 10 close
Envelope, realizes the isolation of two-way pressure；Then ground pump truck is suppressed out of pipe, and pressure enters and pushes from the semicircle orifice of positioning tube 10
Start piston 8, cutting when pressure reaches the design value of starting pin 7, starting 8 compression downlink of piston gets out of the way flowing hole 9, water flow after
Uplink is continued in the continuous gap between piston seat 5 and outer cylinder 6, then pushes closure piston 4(spring 3 open and is pressurized retraction), water flow from
Apopore 13 enters two-tube annular space, enters back into oil jacket annulus, eventually enters into stratum；Then termination of pumping, closure piston 4 by spring force and
Gravity downlink closes apopore 13, prevents inside and outside connection from influencing normal flooding production.Finally, above mentioning logger string to work
Make well section position, carries out intake profile test job.
Claims (10)
1. the preset tool that intake profile is surveyed on a kind of two-tube dispensing upper layer, it is characterised in that: by preset cylinder ontology (15) and block
Device (16) is constituted, and the plugging device (16) is inserted into preset cylinder ontology (15)；
The preset cylinder ontology (15) include top connection (1), overcurrent set (2), spring (3), closure piston (4), piston holder assembly,
Outer cylinder (6), positioning tube (10), lower contact (11), the upper inner of the overcurrent set (2) and the lower outside of top connection (1) connect
It connects, the lower inside of overcurrent set (2) is connect with the upper outside of outer cylinder (6), and the lower inside of outer cylinder (6) and lower contact (11) are even
It connects；The spring (3), closure piston (4) are installed in overcurrent set (2), and one end of spring (3) is withstood under top connection (1)
End face, the other end of spring (3) withstand the upper end of closure piston (4), and the lower end of closure piston (4) is connect with outer cylinder (6)；It is described
Piston holder assembly is penetrated in outer cylinder (6) and is connect with the lower inside of top connection (1), is provided at the top of the positioning tube (10)
Semicircle orifice (19), positioning tube (10) penetrates in lower contact (11), and connect with lower contact (11)；
The outer surface of upper of the plugging device (16) is successively affixed with top connection (1), piston holder assembly, the lower part of plugging device (16)
Outer surface is affixed with positioning tube (10) sealing.
2. the preset tool that intake profile is surveyed on the two-tube dispensing upper layer of one kind according to claim 1, it is characterised in that: described
Piston holder assembly is made of piston seat (5), starting pin (7) and starting piston (8), and the starting piston (8) is packed into piston seat
(5) lower part in and positioned at piston seat (5), and the starting piston (8) is fixed by starting pin (7)；The piston seat (5)
Upper outside be threadedly coupled with the lower inside of top connection (1)；There are cross to circulate between the piston seat (5) and outer cylinder (6)
Road.
3. the preset tool that intake profile is surveyed on the two-tube dispensing upper layer of one kind according to claim 2, it is characterised in that: described
Piston seat (5) is the circular cylinder structure that outer diameter is gradually incremented by from top to bottom, and the upper piston seat including integration connection is under
Portion's piston seat, the top of the lower piston seat offer pin hole (20), and the starting pin (7) passes through the pin hole
(20) piston seat (5) is installed in lower piston seat；The lower part of the lower piston seat is provided with flowing hole (9), the overcurrent
Hole (9) is connected with the flow channels.
4. the preset tool that intake profile is surveyed on the two-tube dispensing upper layer of one kind according to claim 3, it is characterised in that: described
The outer diameter of piston seat (5) is that three sections of steps are gradually incremented by.
5. the preset tool that intake profile is surveyed on the two-tube dispensing upper layer of one kind according to claim 3, it is characterised in that: described
The upper end of positioning tube (10) is in contact with the inner upper end of lower piston seat, the lower end and lower contact (11) of the positioning tube (10)
It is connected through a screw thread.
6. the preset tool that intake profile is surveyed on the two-tube dispensing upper layer of one kind according to claim 1, it is characterised in that: described
The lower end of closure piston (4) uses inclined design, and the lower end of closure piston (4) connects with outer cylinder (6), and passes through sealing ring one
(14) it is sealed.
7. the preset tool that intake profile is surveyed on the two-tube dispensing upper layer of one kind according to claim 1, it is characterised in that: described
Overcurrent set (2) top is equipped with pressure compensation opening (12), and the pressure compensation opening (12) is set to top connection (1) lower end surface and closes
On overcurrent set (2) between piston (4).
8. the preset tool that intake profile is surveyed on the two-tube dispensing upper layer of one kind according to claim 7, it is characterised in that: described
It being additionally provided on overcurrent set (2) multiple apopores (13), multiple apopores (13) are uniformly distributed along the excircle of overcurrent set (2), and
Positioned at the lower section of pressure compensation opening (12).
9. the preset tool that intake profile is surveyed on the two-tube dispensing upper layer of one kind according to claim 1, it is characterised in that: described
Plugging device (16) is made of closure bar (17) and sealing ring two (18), is provided with sealing ring on the excircle for blocking bar (17)
Slot is provided with sealing ring two (18) in the seal groove, and is higher by the outside of the sealing ring two (18) and blocks bar (17)
Outer circumference surface.
10. the use of the preset tool of intake profile is surveyed on -9 described in any item two-tube dispensing upper layers of one kind according to claim 1
Method, which comprises the following steps: plugging device (16) is connected to logger lowest part first and down to preset cylinder
In ontology (15), is formed and sealed by the sealing ring two (18) of plugging device (16) and the inner wall of positioning tube (10), pushed in realization
The isolation of power；Then ground pump truck is suppressed out of pipe, and pressure enters from the semicircle orifice of positioning tube (10) and pushes starting piston
(8), pressure reach starting pin (7) design value when cut, starting piston (8) compression downlink get out of the way flowing hole (9), water flow after
Uplink is continued in the continuous gap between piston seat (5) and outer cylinder (6), then pushes closure piston (4) open, and spring (3) is pressurized at this time
Retraction, water flow enter two-tube annular space from apopore (13), enter back into oil jacket annulus, eventually enter into stratum, then termination of pumping, close and live
It fills in (4) and is closed apopore (13) by spring force and gravity downlink, finally, above mention logger string to active well fragment position,
Carry out intake profile test job.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910648437.9A CN110374561B (en) | 2019-07-18 | 2019-07-18 | Presetting tool for measuring water absorption profile of double-tube separate injection upper layer and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910648437.9A CN110374561B (en) | 2019-07-18 | 2019-07-18 | Presetting tool for measuring water absorption profile of double-tube separate injection upper layer and using method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110374561A true CN110374561A (en) | 2019-10-25 |
| CN110374561B CN110374561B (en) | 2023-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910648437.9A Active CN110374561B (en) | 2019-07-18 | 2019-07-18 | Presetting tool for measuring water absorption profile of double-tube separate injection upper layer and using method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110863807A (en) * | 2019-11-06 | 2020-03-06 | 中国石油天然气股份有限公司 | Method for judging water absorption condition of oil-water well |
| CN113047804A (en) * | 2020-12-29 | 2021-06-29 | 新疆华油油气工程有限公司 | Throwing and fishing type double-acting blanking plug |
Citations (7)
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| CN110863807A (en) * | 2019-11-06 | 2020-03-06 | 中国石油天然气股份有限公司 | Method for judging water absorption condition of oil-water well |
| CN113047804A (en) * | 2020-12-29 | 2021-06-29 | 新疆华油油气工程有限公司 | Throwing and fishing type double-acting blanking plug |
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| CN110374561B (en) | 2023-06-30 |
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