CN112855098B - Water plugging pipe column - Google Patents
Water plugging pipe column Download PDFInfo
- Publication number
- CN112855098B CN112855098B CN202110188420.7A CN202110188420A CN112855098B CN 112855098 B CN112855098 B CN 112855098B CN 202110188420 A CN202110188420 A CN 202110188420A CN 112855098 B CN112855098 B CN 112855098B
- Authority
- CN
- China
- Prior art keywords
- packer
- capsule
- column
- oil
- pipe
- 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.)
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Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 239000002775 capsule Substances 0.000 claims abstract description 29
- 230000000694 effects Effects 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 6
- 239000003129 oil well Substances 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 abstract description 6
- 239000004576 sand Substances 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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
- E21B43/16—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
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/06—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for setting packers
-
- 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
- E21B33/122—Multiple string packers
-
- 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
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/086—Screens with preformed openings, e.g. slotted liners
Landscapes
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Pipe Accessories (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention provides a water plugging pipe column. Relates to the technical field of oil field downhole tools. The lower part of the upper packer is connected with a sieve tube, the lower part of the sieve tube is connected with a lower packer, the lower part of the lower packer is connected with a plug, the upper part of the upper packer is connected with an elastic pipe column, an elastic pipe column is connected between the upper packer and the sieve tube, and an elastic pipe column is connected between the lower packer and the plug. The invention has the following beneficial effects: the expansion and compression of the capsule during the setting and the deblocking of the packer are used for compensating the space change above and below the packer, so that the piston effect is eliminated, the capsule is used as a technical means for compensating the space change, and the packer has the advantages of simple structure, low cost, corrosion resistance and no problem of sand blocking.
Description
The technical field is as follows:
the invention relates to the technical field of oil field downhole tools, in particular to a water plugging pipe column.
Background art:
in the middle and later stages of oil field development, particularly in the later stage of exploitation of a water injection development oil field, along with the change of the water content of a stratum, the interval division is thinner and thinner, the contradiction between the layers is more and more prominent, high and low aquifers coexist, in order to know the oil layer, stabilize and control oil and water, the water finding and blocking operation is often needed, a common pipe column in the water finding and blocking operation at present is a pump-sealed integrated double-sealing water finding and blocking pipe column, the pipe column is sequentially connected with an upper packer, a sieve pipe, a lower packer and a plug on an oil pipe below an oil pump, when the lowest layer oil 8 is singly extracted, the tail part of the oil pipe is connected with the plug, and a dead cavity is formed between a sleeve below the lower packer and the oil pipe after the two packer seats are sealed, so that a piston effect is formed in the deblocking process, the deblocking load is increased, the deblocking is difficult, and even the deblocking and the overhaul is caused;
the publication number CN 111997563A discloses a pump-sealing integrated water finding and blocking pipe column and a floating bottom plug thereof, when the pipe column is lowered for setting, a piston arranged in a piston cavity slides downwards under the pressure of liquid at the upper part of the piston, the volume of a cavity below a lower packer is increased, and thus the liquid pressure in the space below the lower packer is reduced, which is beneficial to setting of the packer; when the pipe column is lifted for deblocking, the piston arranged in the piston cavity slides upwards under the pressure of liquid at the lower part of the piston cavity, so that the volume of the cavity below the lower packer is reduced, the space below the lower packer is prevented from being vacuumized, and deblocking of the packer is facilitated;
although the technical problem that exists has been better solved to this technical scheme, at the setting deblocking in-process, when liquid got into the piston chamber, fine sand in the liquid blockked up easily in the sealing layer and the spring of discharge orifice, piston, caused the problem that the piston removes the inefficacy, and the structure is complicated, and manufacturing cost is high.
The invention content is as follows:
in order to solve the above problems, the present invention provides a water shutoff string.
The technical scheme of the invention is as follows: the water plugging pipe column comprises an upper packer, the lower part of the upper packer is connected with a sieve pipe, the lower part of the sieve pipe is connected with a lower packer, the lower part of the lower packer is connected with a plug, the upper part of the upper packer is connected with an elastic pipe column, an elastic pipe column is connected between the upper packer and the sieve pipe, and an elastic pipe column is connected between the lower packer and the plug.
The elastic pipe column comprises a middle column, an upper connector and a lower connector are arranged on the middle column, a stepped shaft is arranged on the lower portion of the middle column and is in threaded connection with a sheath and a nut, the sheath extends upwards and is a distance away from the bottom surface of the excircle of the upper connector, a capsule is arranged in the annular space between the sheath and the middle column, compressed air is filled in the capsule, a magnetic ring is arranged on the capsule, and a central hole is formed in the middle column.
The capsule is made of oil-resistant rubber.
The invention has the following beneficial effects: the expansion and compression of the capsule during the setting and the deblocking of the packer are used for compensating the space change above and below the packer, so that the piston effect is eliminated, the capsule is used as a technical means for compensating the space change, and the packer has the advantages of simple structure, low cost, corrosion resistance and no problem of sand blocking.
Description of the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the structure of the elastic string of the present invention.
In the figure, 1-upper packer, 2-sieve tube, 3-lower packer, 4-plug, 5-elastic tube column, 6-middle column, 7-upper joint, 8-lower joint, 9-sheath, 10-capsule, 11-nut, 12-central hole and 13-magnetic ring.
The specific implementation mode is as follows:
the invention will be further described with reference to the accompanying drawings in which:
as shown in the figure 1 and the figure 2, the water plugging pipe column comprises an upper packer 1, wherein the lower part of the upper packer 1 is connected with a sieve pipe 2, the lower part of the sieve pipe 2 is connected with a lower packer 3, the lower part of the lower packer 3 is connected with a plug 4, the upper part of the upper packer 1 is connected with an elastic pipe column 5, the elastic pipe column 5 is connected between the upper packer 1 and the sieve pipe 2, and the elastic pipe column 5 is connected between the lower packer 3 and the plug 4.
The elastic pipe column 5 comprises a middle column 6, an upper joint 7 and a lower joint 8 are arranged on the middle column 6, a stepped shaft is arranged at the lower part of the middle column 6 and is in threaded connection with a sheath 9 and a nut 11, the sheath 9 is fixed by taking the nut 11 as a back cap, the sheath 9 extends upwards and is a certain distance away from the bottom surface of the excircle of the upper joint 7, a capsule 10 is arranged in the annular space of the sheath 9 and the middle column 6, compressed air is filled in the capsule 10, a magnetic ring 13 is arranged on the capsule 10, and a central hole 12 is arranged in the middle column 6 and is used as an oil extraction channel.
The material of the capsule 10 is oil-resistant rubber.
During the use, connect the water shutoff tubular column and arrive the design depth under the oil-well pump bottom, go into the in-process down, the setting and the deblocking of packer are all accomplished in fixed stroke, setting packer when single-production lower floor oil reservoir, lift the tubular column, transfer the tubular column again, to last packer 1, packer 3 carries out the setting down, at the setting in-process, the annular space of oil jacket of 3 below packers down receives the extrusion, the liquid of 3 below annular spaces of lower packers oil jacket gets into 10 position extrusion capsules 10 of capsule from the 9 tops of sheath, capsule 10 is compressed, thereby will receive extruded space compensation and return.
When the deblocking, lift the tubular column, make packer 1 and lower packer 3 all shift up to the deblocking position, the cavity volume of packer 3 below can produce the negative pressure down this moment, and capsule 10 gets back to original volume or inflation under vacuum pressure under the effect of negative pressure, prevents that the space of packer 3 below is taken out into the vacuum down to because the resistance that piston effect need overcome when reducing the deblocking packer, the deblocking of the packer of being convenient for.
The expansion and compression of the capsule 10 during the setting and the unsetting of the packer are used for compensating the space change above and below the packer, so that the piston effect is eliminated, the capsule 10 is used as a technical means for compensating the space change, and the packer has the advantages of simple structure, low cost, corrosion resistance and no sand blockage.
Go up packer 1 and 2 upper portions of screen pipe and be elastic pipe 5 and lift the tubular column, transfer the liquid impact that the tubular column brought when can adapt to the deblocking setting equally, reduce the impact to screen pipe 2, oil-well pump, simultaneously, when liquid flowed into the capsule, the iron that drops when the slips interlock sleeve pipe when packer is set, when the deblocking was cut and is adsorbed on magnetic ring 13, has reduced screen pipe, the dead possibility of oil-well pump card.
In the process of pumping oil, when the oil pump works, produced liquid enters the oil pipe through the sieve pipe 2 and is pumped out through the oil pump, impurities in the produced liquid can be deposited downwards in the sand setting pocket above the plug 4, and the failure caused by the dead burying of the lower packer is avoided.
Claims (1)
1. The utility model provides a water shutoff tubular column, includes packer (1), its characterized in that: the lower part of the upper packer (1) is connected with a sieve tube (2), the lower part of the sieve tube (2) is connected with a lower packer (3), the lower part of the lower packer (3) is connected with a plug (4), the upper part of the upper packer (1) is connected with an elastic pipe column (5), the elastic pipe column (5) is connected between the upper packer (1) and the sieve tube (2), and the elastic pipe column (5) is connected between the lower packer (3) and the plug (4);
the elastic pipe column (5) comprises a middle column (6), an upper joint (7) and a lower joint (8) are arranged on the middle column (6), a step shaft thread is arranged at the lower part of the middle column (6) and connected with a sheath (9) and a nut (11), the sheath (9) extends upwards and is away from the bottom surface of the excircle of the upper joint (7), a capsule (10) is arranged in the annular space of the sheath (9) and the middle column (6), compressed air is filled in the capsule (10), a magnetic ring (13) is arranged on the capsule (10), a central hole (12) is formed in the middle column (6), and the capsule (10) is made of oil-resistant rubber;
in the setting process, the oil sleeve annulus below the lower packer (3) is extruded, liquid in the oil sleeve annulus below the lower packer (3) enters the capsule (10) from the upper part of the sheath (9) to extrude the capsule (10), and the capsule (10) is compressed, so that the extruded space is compensated;
when the packer is unset, the pipe column is lifted up, so that the upper packer (1) and the lower packer (3) both move up to the unset position, the volume of the cavity below the lower packer (3) generates negative pressure, the capsule (10) returns to the original volume or expands under the vacuum pressure under the action of the negative pressure, and the space below the lower packer (3) is prevented from being vacuumized, so that the resistance required to be overcome due to the piston effect when the packer is unset is reduced, and the unset of the packer is facilitated;
go up packer (1) and screen pipe (2) upper portion and be elastic pipe post (5) and lift the tubular column equally when can adapt to the deblocking setting, transfer the liquid impact that the tubular column brought, reduce the impact to screen pipe (2), oil-well pump, simultaneously, when liquid flowed into the capsule, the iron that drops when the slips interlock sleeve pipe when packer is set, the deblocking was cut and is adsorbed on magnetic ring (13), has reduced screen pipe, the dead possibility of oil-well pump card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110188420.7A CN112855098B (en) | 2021-02-19 | 2021-02-19 | Water plugging pipe column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110188420.7A CN112855098B (en) | 2021-02-19 | 2021-02-19 | Water plugging pipe column |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112855098A CN112855098A (en) | 2021-05-28 |
| CN112855098B true CN112855098B (en) | 2021-10-29 |
Family
ID=75989776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110188420.7A Active CN112855098B (en) | 2021-02-19 | 2021-02-19 | Water plugging pipe column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112855098B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113338919B (en) * | 2021-06-15 | 2024-05-17 | 中国石油化工股份有限公司 | Blocking tubular column |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4190107A (en) * | 1978-08-25 | 1980-02-26 | Baker International Corporation | Well bore apparatus with hydraulically releasable tubing seal unit |
| CN201843565U (en) * | 2010-09-07 | 2011-05-25 | 中国石油天然气股份有限公司 | Belt pump type multifunctional water plugging tubular column |
| CN102400658A (en) * | 2010-09-13 | 2012-04-04 | 昆山中慈工控科技开发有限公司 | Self-induction type intelligent electrically driven hydraulic capsule packer |
| CN202360045U (en) * | 2011-07-05 | 2012-08-01 | 吕清河 | An oil pipe compensator |
| CN203961887U (en) * | 2014-01-09 | 2014-11-26 | 中国石油天然气股份有限公司 | A kind of water plugging string that is suitable for well of the stifled end of little interlayer |
| CN204252929U (en) * | 2014-11-05 | 2015-04-08 | 中国石油天然气股份有限公司 | Oil recovery water plugging string |
| CN204457690U (en) * | 2014-12-18 | 2015-07-08 | 中国石油天然气股份有限公司 | A kind of dispensing well middle level injection test tubing string |
| CN104989316A (en) * | 2015-06-26 | 2015-10-21 | 中国石油天然气股份有限公司 | Integrated horizontal well water location and shutoff pipe column |
| CN111577179A (en) * | 2020-06-05 | 2020-08-25 | 中国石油化工股份有限公司 | Movable bottom plug |
| CN111997563A (en) * | 2020-08-04 | 2020-11-27 | 中国石油化工股份有限公司 | Pump-sealing integrated water finding and blocking pipe column and moving bottom block thereof |
| CN111997564A (en) * | 2020-08-04 | 2020-11-27 | 中国石油化工股份有限公司 | Integrative water-plugging pipe column of looking for of bottom block and pump seal moves about |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2063165U (en) * | 1990-01-19 | 1990-10-03 | 河南石油勘探局第一采油厂 | Compensator for water-injecting pipe string |
| RU2009311C1 (en) * | 1991-03-14 | 1994-03-15 | Борис Семенович Лобанов | Method for plugging-up wells |
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2021
- 2021-02-19 CN CN202110188420.7A patent/CN112855098B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4190107A (en) * | 1978-08-25 | 1980-02-26 | Baker International Corporation | Well bore apparatus with hydraulically releasable tubing seal unit |
| CN201843565U (en) * | 2010-09-07 | 2011-05-25 | 中国石油天然气股份有限公司 | Belt pump type multifunctional water plugging tubular column |
| CN102400658A (en) * | 2010-09-13 | 2012-04-04 | 昆山中慈工控科技开发有限公司 | Self-induction type intelligent electrically driven hydraulic capsule packer |
| CN202360045U (en) * | 2011-07-05 | 2012-08-01 | 吕清河 | An oil pipe compensator |
| CN203961887U (en) * | 2014-01-09 | 2014-11-26 | 中国石油天然气股份有限公司 | A kind of water plugging string that is suitable for well of the stifled end of little interlayer |
| CN204252929U (en) * | 2014-11-05 | 2015-04-08 | 中国石油天然气股份有限公司 | Oil recovery water plugging string |
| CN204457690U (en) * | 2014-12-18 | 2015-07-08 | 中国石油天然气股份有限公司 | A kind of dispensing well middle level injection test tubing string |
| CN104989316A (en) * | 2015-06-26 | 2015-10-21 | 中国石油天然气股份有限公司 | Integrated horizontal well water location and shutoff pipe column |
| CN111577179A (en) * | 2020-06-05 | 2020-08-25 | 中国石油化工股份有限公司 | Movable bottom plug |
| CN111997563A (en) * | 2020-08-04 | 2020-11-27 | 中国石油化工股份有限公司 | Pump-sealing integrated water finding and blocking pipe column and moving bottom block thereof |
| CN111997564A (en) * | 2020-08-04 | 2020-11-27 | 中国石油化工股份有限公司 | Integrative water-plugging pipe column of looking for of bottom block and pump seal moves about |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112855098A (en) | 2021-05-28 |
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