CN109025907A - Controlled release medicament downhole tool in a kind of oil gas well shaft - Google Patents
Controlled release medicament downhole tool in a kind of oil gas well shaft Download PDFInfo
- Publication number
- CN109025907A CN109025907A CN201811051795.3A CN201811051795A CN109025907A CN 109025907 A CN109025907 A CN 109025907A CN 201811051795 A CN201811051795 A CN 201811051795A CN 109025907 A CN109025907 A CN 109025907A
- Authority
- CN
- China
- Prior art keywords
- oil gas
- partition
- solvable
- controlled release
- downhole tool
- 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
- 239000003814 drug Substances 0.000 title claims abstract description 43
- 238000013270 controlled release Methods 0.000 title claims abstract description 20
- 238000005192 partition Methods 0.000 claims abstract description 46
- 239000007787 solid Substances 0.000 claims abstract description 32
- 239000000126 substance Substances 0.000 claims abstract description 29
- 238000004090 dissolution Methods 0.000 claims abstract description 10
- 239000003129 oil well Substances 0.000 claims abstract description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 229910052749 magnesium Inorganic materials 0.000 claims description 5
- 239000011777 magnesium Substances 0.000 claims description 5
- 229910052738 indium Inorganic materials 0.000 claims description 4
- 239000002195 soluble material Substances 0.000 claims description 4
- 229910052718 tin Inorganic materials 0.000 claims description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 229910052797 bismuth Inorganic materials 0.000 claims description 3
- 229910052733 gallium Inorganic materials 0.000 claims description 3
- -1 polyethylene Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 description 13
- 238000009434 installation Methods 0.000 description 6
- 239000000956 alloy Substances 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 5
- 229940079593 drug Drugs 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000005764 inhibitory process Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 206010000210 abortion Diseases 0.000 description 1
- 231100000176 abortion Toxicity 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229940126589 solid medicine Drugs 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- E21B37/06—Methods or apparatus for cleaning boreholes or wells using chemical means for preventing or limiting, e.g. eliminating, the deposition of paraffins or like substances
-
- 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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/02—Equipment or details not covered by groups E21B15/00 - E21B40/00 in situ inhibition of corrosion in boreholes or wells
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Preparation (AREA)
Abstract
The invention discloses controlled release medicament downhole tools in a kind of oil gas well shaft, including cartridge, one end of cartridge is connect by screen casing with oil well pump, the other end is connect with oil gas field well, multiple solvable partitions are arranged at intervals in cartridge, solid chemicals are placed respectively between solvable partition, realize that releasing by parts solid chemicals complete the dosing of oil gas field underground from top to bottom by the dissolution of solvable partition.Medicament of the present invention is directly placed into shaft bottom, and simple process, validity period are long, and effect is good, and since the solid chemicals block discharged every time belongs to spongy, dissolution is fast, after dissolution, will not occur to block oil flow channel.
Description
Technical field
The invention belongs to production gas technology fields of recovering the oil, and in particular to controlled release medicament underground in a kind of oil gas well shaft
Tool.
Background technique
The problems such as oil/gas well wax deposition, fouling, corrosion, uses based on the filling of proof wellhead oil casing annular space, downhole solid
The technologies such as inhibition stick, drop dosing, the technology supplemented by downhole solid inhibition stick.However general proof wellhead oil casing annular space dosing on time,
Difficulty is added according to quantity, and adds drug and is hard to reach underground active component, influences medicament using effect.Downhole solid stick reduces labor
Fatigue resistance overcomes and is unable to dosing, the big problem of outlying well dosing management difficulty every adopting well.But solution temperature controls difficulty
Greatly, after solidification medicament dissolves in tail pipe, oil flow channel is easily blocked.Mechanical point drips loading techniques and spreads original using density contrast
Reason, makes the liquid in drug storage pipe continuously flow into pit shaft, but medicament dropping velocity is influenced by wellbore pressure, doser
Medical abortion speed cannot achieve automatic control；Electric-controlled type point drip chemical adder, the drug in drug storage pipe enter dosing control under the effect of gravity
System processed can preset dosing process, but effect is influenced by factors such as battery life, foulings, and when dosage is larger
It can not achieve and continuously add for a long time.And somewhat expensive.
Summary of the invention
In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that providing a kind of oil/gas well well
Controlled release medicament downhole tool in cylinder, may be implemented the controllable feeding of oil/gas well, and according to the Liquid output of oil/gas well and
Salinity in production fluid is come validity period for adjusting the speed of release and using, by controlling the solution rate of solvable partition,
Releasing by parts medicament from top to bottom is used for the dosing of oil gas field underground.
The invention adopts the following technical scheme:
Controlled release medicament downhole tool in a kind of oil gas well shaft, including cartridge, one end of cartridge pass through sieve
Pipe is connect with oil well pump, and the other end is connect with oil gas field well, multiple solvable partitions is arranged at intervals in cartridge, in solvable partition
Between place solid chemicals respectively, pass through solvable partition dissolution realize from top to bottom releasing by parts solid chemicals complete oil gas field well
Lower dosing.
Specifically, the inside of cartridge is arranged at intervals with several step-like structures, solvable partition is radially arranged in step-like
At structure.
Specifically, being disposed with rubber washer and ring washer between solvable partition and screen casing.
Specifically, solvable partition is every 1~2m spaced set.
Specifically, solvable partition is circularly set by the distance sequence of 1m, 2m, 3m, 4m, 5m.
Specifically, solid chemicals are spongelike structure, porosity is the 50~80% of solid chemicals volume.
Further, the density of solid chemicals is less than 1kg/cm3, by 60~80 parts of host agents and 20~40 parts of vehicle group
At carrier is the high pressure polyethylene of molecular weight 1000~12,000,000 or the EVA of molecular weight 1000~20,000,000.
Specifically, solvable partition is made of aluminium base or magnesium-based soluble material, by percentage to the quality: 99.5~99.9%
0.1~0.5% Bi, Sn, In, Ga are added in Al or Mg.
Compared with prior art, the present invention at least has the advantages that
Controlled release medicament downhole tool in a kind of oil gas well shaft of the present invention, be arranged at intervals in cartridge it is multiple can
Molten partition places solid chemicals between solvable partition respectively, realizes that releasing by parts is solid from top to bottom by the dissolution of solvable partition
Body medicament completes the dosing of oil gas field underground, can be according to the salinity in the Liquid output and production fluid of oil/gas well come regulating agent
The speed of release and the validity period used realize releasing by parts medicament from top to bottom by the dissolution of solvable partition, can be used for
The dosing of oil gas field underground.
Further, it is successively dissolved by solvable partition, controls medicament rate of release in dosing cylinder.
Further, rubber washer is set and ring washer further functions as sealing function.
Further, the duration dissolved according to solvable partition, the dosage calculated, 1~2m of spacing is arranged.
Further, when pit shaft liquid outlet quantity is big, as soon as need time dosage to increase, so needing to increase partition room away from such as
The regular variation of fruit liquid outlet quantity, so his dosage regular can also change, it is possible to it is regular setting every
Plate spacing, therefore be circularly set by the distance of 1m, 2m, 3m, 4m, 5m sequence.
Further, solid chemicals are spongelike structure, and porosity is the 50~80% of solid chemicals volume, solid chemicals
For spongelike structure, porosity is the 50~80% of solid chemicals volume.
Further, solid chemicals density is less than 1kg/cm3, by 60~80 parts of host agents and 20~40 parts of vehicle group
At, in this way plus medicament can float on liquid level, sufficiently dissolve.
Further, Bi, Sn, In, the Ga for being added 0.1~0.5% adjust fusing point, the activated alloy of solution temperature, low temperature
Alloy and reinforced alloys.
In conclusion medicament of the present invention is directly placed into shaft bottom, simple process, validity period are long, and effect is good, and due to releasing every time
The solid chemicals block put belongs to spongy, and dissolution is fast, after dissolution, will not occur to block oil flow channel.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention.
Wherein: 1. screen casings；2. cartridge；3. solvable partition；4. rubber washer；5. ring washer；6. solid chemicals.
Specific embodiment
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
"front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " side ", " one end ", " one side " etc.
The orientation or positional relationship of instruction is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of the description present invention and letter
Change description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation construct and
Operation, therefore be not considered as limiting the invention.In addition, in the description of the present invention, unless otherwise indicated, " multiples' "
It is meant that two or more.
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.
The present invention provides controlled release medicament downhole tool in a kind of oil gas well shaft, using connect under screen casing it is multiple not
With model cartridge, multiple solvable partitions of (different or equidistant) installation on demand from top to bottom in cartridge, in cartridge
The special processing in portion, solvable partition is radially packed at step, is put into rubber washer, is finally compacted with ring washer, it is solvable every
Solid chemicals are placed between plate.It can be discharged according to the salinity in the Liquid output and production fluid of oil/gas well come regulating agent
Speed and the validity period used realize releasing by parts medicament from top to bottom by the dissolution of solvable partition, can be used for oil gas field
Underground dosing.
Referring to Fig. 1, controlled release medicament downhole tool in a kind of oil gas well shaft of the present invention, including screen casing 1, powder charge
Cylinder 2, solvable partition 3, rubber washer 4, ring washer 5 and solid chemicals 6, cartridge 2 include different model, are arranged in screen casing 1
Lower part, in cartridge 2 from top to bottom on different distance or the equidistant multiple solvable partitions 3 of installation on demand, solvable partition 3
Between place solid chemicals 6, after liquid enters cartridge 2, from top to bottom reaction release medicament.
The screen casing 1 that 110~20cm is installed on cartridge 2 allows liquid that can enter cartridge 2 from upper；It installs as desired
The variation of dispensing speed may be implemented according to various combination for length difference cartridge.
Solvable partition 3 is made of aluminium base or magnesium-based soluble material, by percentage to the quality: 99.5~99.9% Al or Mg
Bi, Sn, In, Ga that the inside is added 0.1~0.5% adjust fusing point, the activated alloy of solution temperature, low-temperature alloy and strengthen conjunction
Gold；It can at the uniform velocity be reacted with water by melting, forging soluble material, reaction product dispersion may finally react completely.
Cartridge 2 is processed according to tubing size, and the inside of cartridge 2 is arranged at intervals with several step-like structures, will be solvable
Partition 3 is packed at step, is put into rubber washer 4, and last ring washer 5 is compacted, and ring washer 5 is made of ordinary carbon steel.
The density of solid chemicals 6 is less than 1kg/cm3, by 60~80 parts of medicament host agent of required dosing, 20~40 parts of carrier
Composition, the EVA that carrier is the high pressure polyethylene that molecular weight is 1000~12,000,000 or molecular weight is 1000~20,000,000.
Entire solid chemicals 6 are processed into spongy, porosity is the 50~80% of 6 volume of solid chemicals, for reducing
The global density of solid chemicals 6, while increasing medicament rate of release.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being described and shown in usually here in attached drawing is real
The component for applying example can be arranged and be designed by a variety of different configurations.Therefore, below to the present invention provided in the accompanying drawings
The detailed description of embodiment be not intended to limit the range of claimed invention, but be merely representative of of the invention selected
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without creative efforts
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Embodiment 1
The controlled release medicament downhole tool of long 100m cartridge is installed, screen casing 1 is lower to be hinged with cylindrantherae 2, and cartridge 2 is interior from upper
To 100 solvable partitions 3 of lower equidistant installation, spacing 1m, solvable partition 3 is arranged radially at the step of cartridge 2, puts
Enter rubber washer 4, be finally compacted with ring washer 5, solid chemicals 6 are placed between solvable partition 3.
Embodiment 2
The controlled release medicament downhole tool of long 150m cartridge is installed, screen casing 1 is lower to be hinged with cylindrantherae 2, and cartridge 2 is interior from upper
The solvable partition 3 of distance sequence cycle installation 50 according to 1m, 2m, 3m, 4m, 5m is arrived down, solvable partition 3 is arranged radially in dress
At the step of cylindrantherae 2, it is put into rubber washer 4, is finally compacted with ring washer 5, solid chemicals 6 are placed between solvable partition 3.
Embodiment 3
The controlled release medicament downhole tool for installing long 100m cartridge installs 2 cartridges 2, each 50m, two dresses
It is connected between cylindrantherae 2 with the screen casing of 5m, it, will be solvable from top to bottom every the equidistant solvable partition of installation of 2m in each cartridge 2
Partition is radially packed at step, is put into rubber washer 4, is finally compacted with ring washer 5, and solid medicine is placed between solvable partition
Agent 6.
Embodiment 1 is dosing in the case that required medicament is stablized under conventional well Liquid output stable case, and embodiment 2 is root
Medicament rate of release is adjusted in the case where changing according to pit shaft liquid measure, adjustable partition room is away from the change for realizing medicament rate of release
Change.Embodiment 3 is that pit shaft liquid measure increases, and increases Liquid output.Scene use when the dosage according to needed for pit shaft and adjust every
The spacing of plate, the quantity of dosing cylinder.
The above content is merely illustrative of the invention's technical idea, and this does not limit the scope of protection of the present invention, all to press
According to technical idea proposed by the present invention, any changes made on the basis of the technical scheme each falls within claims of the present invention
Protection scope within.
Claims (8)
1. controlled release medicament downhole tool in a kind of oil gas well shaft, which is characterized in that including cartridge (2), cartridge
(2) one end is connect by screen casing (1) with oil well pump, and the other end is connect with oil gas field well, is arranged at intervals in cartridge (2) more
A solvable partition (3), places solid chemicals (6) respectively between solvable partition (3), by solvable partition (3) dissolution realize from
On down releasing by parts solid chemicals (6) complete the dosing of oil gas field underground.
2. controlled release medicament downhole tool in a kind of oil gas well shaft according to claim 1, which is characterized in that dress
The inside of cylindrantherae (2) is arranged at intervals with several step-like structures, and solvable partition (3) is radially arranged at step-like structure.
3. controlled release medicament downhole tool in a kind of oil gas well shaft according to claim 1 or 2, feature exist
In being disposed with rubber washer (4) and ring washer (5) between solvable partition (3) and screen casing (1).
4. controlled release medicament downhole tool in a kind of oil gas well shaft according to claim 1, which is characterized in that can
Molten partition (3) is every 1~2m spaced set.
5. controlled release medicament downhole tool in a kind of oil gas well shaft according to claim 1, which is characterized in that can
Molten partition (3) is circularly set by the distance sequence of 1m, 2m, 3m, 4m, 5m.
6. controlled release medicament downhole tool in a kind of oil gas well shaft according to claim 1, which is characterized in that Gu
Body medicament (6) is spongelike structure, and porosity is the 50~80% of solid chemicals (6) volume.
7. controlled release medicament downhole tool in a kind of oil gas well shaft according to claim 6, which is characterized in that Gu
The density of body medicament (6) is less than 1kg/cm3, it is made of 60~80 parts of host agents and 20~40 parts of carrier, carrier is molecular weight
1000~12,000,000 high pressure polyethylene or the EVA of molecular weight 1000~20,000,000.
8. controlled release medicament downhole tool in a kind of oil gas well shaft according to claim 1, which is characterized in that can
Molten partition (3) is made of aluminium base or magnesium-based soluble material, by percentage to the quality: being added in 99.5~99.9% Al or Mg
0.1~0.5% Bi, Sn, In, Ga.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811051795.3A CN109025907A (en) | 2018-09-10 | 2018-09-10 | Controlled release medicament downhole tool in a kind of oil gas well shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811051795.3A CN109025907A (en) | 2018-09-10 | 2018-09-10 | Controlled release medicament downhole tool in a kind of oil gas well shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109025907A true CN109025907A (en) | 2018-12-18 |
Family
ID=64621152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811051795.3A Pending CN109025907A (en) | 2018-09-10 | 2018-09-10 | Controlled release medicament downhole tool in a kind of oil gas well shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109025907A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110593818A (en) * | 2019-09-18 | 2019-12-20 | 中国石油化工股份有限公司 | Oil production well machinery segmentation adds medicine tubular column |
| CN110630218A (en) * | 2019-09-18 | 2019-12-31 | 中国石油化工股份有限公司 | Mechanical control continuous dosing tubular column for pipe-inserting oil production well |
| CN111236889A (en) * | 2020-03-30 | 2020-06-05 | 中国石油天然气集团有限公司 | Oil well underground delayed dosing device and using method thereof |
| CN112392439A (en) * | 2020-12-04 | 2021-02-23 | 中国石油天然气股份有限公司 | Underground medicament controlled release device and control method for oil-water well |
| CN115614002A (en) * | 2021-07-13 | 2023-01-17 | 中国石油天然气股份有限公司 | Self-controlled slow-release device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110593818A (en) * | 2019-09-18 | 2019-12-20 | 中国石油化工股份有限公司 | Oil production well machinery segmentation adds medicine tubular column |
| CN110630218A (en) * | 2019-09-18 | 2019-12-31 | 中国石油化工股份有限公司 | Mechanical control continuous dosing tubular column for pipe-inserting oil production well |
| CN110630218B (en) * | 2019-09-18 | 2021-10-15 | 中国石油化工股份有限公司 | Mechanical control continuous dosing tubular column for pipe-inserting oil production well |
| CN111236889A (en) * | 2020-03-30 | 2020-06-05 | 中国石油天然气集团有限公司 | Oil well underground delayed dosing device and using method thereof |
| CN112392439A (en) * | 2020-12-04 | 2021-02-23 | 中国石油天然气股份有限公司 | Underground medicament controlled release device and control method for oil-water well |
| CN112392439B (en) * | 2020-12-04 | 2022-12-02 | 中国石油天然气股份有限公司 | Underground medicament controlled release device and control method for oil-water well |
| CN115614002A (en) * | 2021-07-13 | 2023-01-17 | 中国石油天然气股份有限公司 | Self-controlled slow-release device |
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Application publication date: 20181218 |