CN106593358B - Device for releasing medicament in pumping well in relay manner - Google Patents
Device for releasing medicament in pumping well in relay manner Download PDFInfo
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- CN106593358B CN106593358B CN201710070940.1A CN201710070940A CN106593358B CN 106593358 B CN106593358 B CN 106593358B CN 201710070940 A CN201710070940 A CN 201710070940A CN 106593358 B CN106593358 B CN 106593358B
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- releaser
- pesticide
- chemical
- discharging
- pipe
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- 238000005086 pumping Methods 0.000 title claims abstract description 14
- 239000003814 drug Substances 0.000 title claims description 51
- 238000003860 storage Methods 0.000 claims abstract description 51
- 239000007788 liquid Substances 0.000 claims abstract description 38
- 239000000126 substance Substances 0.000 claims abstract description 30
- 230000008878 coupling Effects 0.000 claims abstract description 28
- 238000010168 coupling process Methods 0.000 claims abstract description 28
- 238000005859 coupling reaction Methods 0.000 claims abstract description 28
- 238000007599 discharging Methods 0.000 claims abstract description 19
- 238000005260 corrosion Methods 0.000 claims abstract description 18
- 230000007797 corrosion Effects 0.000 claims abstract description 17
- 239000002455 scale inhibitor Substances 0.000 claims abstract description 13
- 239000010405 anode material Substances 0.000 claims abstract description 11
- 239000002131 composite material Substances 0.000 claims abstract description 11
- 239000007787 solid Substances 0.000 claims abstract description 11
- 239000000575 pesticide Substances 0.000 claims description 52
- 239000013043 chemical agent Substances 0.000 claims description 24
- 239000003795 chemical substances by application Substances 0.000 claims description 21
- 239000003129 oil well Substances 0.000 claims description 19
- 239000011148 porous material Substances 0.000 claims description 5
- 239000002360 explosive Substances 0.000 claims 4
- 239000003112 inhibitor Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033558 biomineral tissue development Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000009671 shengli Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Catching Or Destruction (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The device for releasing the chemicals in a relay manner in the pumping well is characterized in that an upper flow channel control plug is arranged on the upper part of a chemical feeding releaser, a lower flow channel control plug is arranged on the upper part of a chemical discharging releaser, an oil pipe coupling, a liquid inlet sieve pipe, a variable-buckle coupling, the chemical feeding releaser, a chemical feeding storage pipe, a middle coupling, the lower flow channel control plug, the chemical feeding releaser, a chemical feeding storage pipe and a bottom closing head are sequentially connected, a communicating sieve hole is formed in the liquid inlet sieve pipe, a chemical feeding release hole is formed in the chemical feeding releaser, a solid corrosion and scale inhibitor is filled in the chemical feeding storage pipe, a chemical feeding release hole is sealed by a composite anode material, and the chemical feeding releaser relay release anti-corrosion and scale inhibitor can prolong the release time and prolong the use time, thereby prolonging the production period of the pumping well and having obvious economic benefits.
Description
Technical Field
The invention relates to downhole equipment for an oil pumping well in an oil field, in particular to a device for preventing corrosion and scaling of an oil well rod pipe, and specifically relates to a device for releasing a medicament in a pumping well in a relay manner.
Background
After the development of an oil field for many years, at present, the corrosion and scaling problems of oil well casings, oil pipes and downhole tools are increasingly serious in the later development stage, particularly, a high-temperature high-salt oil reservoir, such as a T128 fault block of a Shengli oil field, mainly contains four 5-8 sand groups of oil layer position sands, is a lithologic glutenite sector oil reservoir controlled by lithology, the permeability of the sand group is mainly distributed and concentrated between 1-10 millidarcy, the oil layer temperature is 108 ℃, the mineralization degree is between 3 and 8 ten thousand mg/L, associated gas also contains corrosive gases such as hydrogen sulfide and carbon dioxide to different degrees, and the oil reservoir is a high-temperature normal-pressure thin oil reservoir, and the oil reservoir is seriously corroded. Meanwhile, in the production process of the oil field, due to the change of temperature and pressure, the oil reservoir stratum, the shaft and the oil pipeline have scaling in different degrees. In the process of water injection development of an oil-gas well, the loss caused by corrosion and scaling is remarkable, about 10% of metal is lost in corrosion every year, and the scaling of the near-wellbore region of the oil well can block an oil-gas seepage passage, so that the liquid production amount is reduced; the oil well load is increased due to the scaling of the well bore, the pump efficiency is reduced, even the pump is blocked, and the oil well stops production.
In order to solve the problems of corrosion and scaling of pumping well, oil field adopts many measures, such as corrosion-proof oil pipe and pumping rod, but the material type corrosion-proof method is expensive, and the corrosion-proof and scaling-proof effects are not ideal.
Disclosure of Invention
The invention aims to design a device for releasing a medicament in a pumping well in a relay manner, which solves the existing problems, avoids the pipe rod of the pumping well from being corroded, prevents an oil well pump and an oil pipe from scaling, ensures long-term normal production of the oil well and improves the production period of the oil well.
The purpose of the invention is realized by the following steps: the device comprises an oil pipe coupling, a liquid inlet sieve pipe, a variable buckle coupling, an upper flow channel control plug, a pesticide applying releaser, a pesticide applying storage pipe, a middle coupling, a lower flow channel control plug, a pesticide applying releaser, a composite anode material, a pesticide applying storage pipe and a bottom closing head, wherein the upper thread of the oil pipe coupling is matched with the lower pump thread of an oil well pump, the lower thread of the oil pipe coupling is in threaded connection with the upper part of the liquid inlet sieve pipe, the liquid inlet sieve pipe is provided with a communicating sieve pore, the lower part of the liquid inlet sieve pipe is connected with the upper part of the variable buckle coupling, the upper flow channel control plug is arranged in an upper inner hole of the pesticide applying releaser, the upper part of the pesticide applying releaser is closed, liquid flow in the pesticide applying releaser cannot flow upwards out from the space between the upper flow channel control plug and the pesticide applying releaser, the pesticide applying releaser is provided with a pesticide applying release hole, and the upper part of the pesticide applying releaser is connected with the lower part of the variable buckle, the upper part of the variable buckle coupling is connected with the lower part of the liquid inlet sieve tube, the lower part of the pesticide applying releaser is connected with the pesticide storage tube, the lower part of the pesticide applying storage tube is closed, so that liquid flow outside the pesticide applying storage tube cannot enter the pesticide applying storage tube from the lower part of the pesticide applying storage tube, the solid corrosion and scale inhibitor is filled in the pesticide applying releaser and the pesticide applying storage tube, the lower flow channel control plug is arranged in an upper inner hole of the pesticide releasing releaser, the upper part of the pesticide releasing releaser is closed, so that the liquid flow in the pesticide releasing releaser cannot flow upwards out from between the lower flow channel control plug and the pesticide releasing releaser, the pesticide releasing releaser is provided with pesticide releasing agent holes, the upper part of the pesticide releasing releaser is connected with the middle coupling, the upper part of the middle coupling is connected with the lower part of the pesticide applying storage tube, the lower part of the pesticide releasing releaser is connected with the lower storage tube, the lower part of the lower medicament storage pipe is connected with a bottom closing head, so that liquid flow outside the lower medicament storage pipe cannot enter the lower medicament storage pipe from the lower part of the lower medicament storage pipe, solid corrosion and scale inhibitor is placed in the lower medicament releaser and the lower medicament storage pipe, and the lower medicament release hole is closed by a composite anode material.
The number of the communicated sieve holes on the liquid inlet sieve tube is 20-60, and the aperture of the communicated sieve holes is 6-12mm.
The upper medicine releasing holes on the upper medicine releaser have the number of 10-50, the upper medicine releasing holes have the aperture of 6-12mm, the lower medicine releasing holes have the number of 10-50 and the lower medicine releasing holes have the aperture of 6-12mm.
The invention has the beneficial effects that: after the device is put into the well, the solid corrosion and scale inhibitor in the upper chemical agent releaser releases the medicament and is mixed with well liquid, so that the well liquid, an oil well pump and an oil pipe sucker rod above the oil well pump are not corroded and scaled, at the moment, a chemical discharging release hole on the lower chemical agent releaser is sealed by the composite anode material, the medicament in the lower chemical agent releaser is not released, when the solid corrosion and scale inhibitor in the upper chemical agent releaser releases the medicament, the composite anode material for sealing the chemical discharging release hole is also in a corrosive environment, because the electrode potential of the composite anode material is lower and is corroded in preference to an iron material, the composite anode material for sealing the chemical discharging release hole is corroded after the solid corrosion and scale inhibitor in the upper chemical agent releaser is released, the solid corrosion and scale inhibitor in the lower chemical agent releaser starts to release the medicament and is mixed with the well liquid, so that the well liquid, the oil well pump and the oil pipe sucker rod above the oil well pump are not corroded and scaled, and the scaling benefit can be prolonged obviously.
Drawings
FIG. 1 is a block diagram of the present invention.
Detailed Description
An embodiment of the present invention will be described below with reference to fig. 1.
As can be seen from figure 1, the embodiment of the invention comprises an oil pipe coupling 1, a liquid inlet sieve pipe 2, a variable lock joint coupling 4, an upper flow passage control plug 5, a pesticide applying releaser 6, a pesticide applying storage pipe 8, a middle coupling 9, a lower flow passage control plug 11, a pesticide applying releaser 12, a composite anode material 14, a pesticide applying storage pipe 15 and a bottom closing head 16, the invention is arranged below a petroleum pump of a pumping well pipe column, the upper thread of the oil pipe coupling 1 is matched with the lower pump thread of the petroleum pump, the lower thread of the oil pipe coupling 1 is connected with the upper thread of the liquid inlet sieve pipe 2, the liquid inlet sieve pipe 2 is provided with a communication sieve pore 3, the lower part of the liquid inlet sieve pipe 2 is connected with the upper part of the variable lock joint coupling 4, the upper flow passage control plug 5 is arranged in the upper inner hole of the pesticide applying releaser 6 (in threaded connection), the upper part of the medicine feeding releaser 6 is sealed, so that the liquid flow in the medicine feeding releaser 6 can not flow out upwards from the space between the upper flow passage control plug 5 and the medicine feeding releaser 6, the medicine feeding releaser 6 is provided with a medicine feeding release hole 7, the upper part of the medicine feeding releaser 6 is connected with the lower part of the buckle 4, the upper part of the buckle 4 is connected with the lower part of the liquid inlet sieve tube 2, the lower part of the medicine feeding agent releaser 6 is connected with the medicine feeding agent storage pipe 8, the lower part of the medicine feeding agent storage pipe 8 is closed, so that liquid flow outside the medicine feeding agent storage pipe 8 cannot enter the medicine feeding agent storage pipe 8 from the lower part of the medicine feeding agent storage pipe 8, and the solid corrosion and scale inhibitor is filled in the medicine feeding agent releaser 6 and the medicine feeding agent storage pipe 8. A lower flow channel control plug 11 (in threaded connection) is arranged in an inner hole in the upper part of a lower chemical agent releaser 12, so that the upper part of the lower chemical agent releaser 12 is sealed, liquid flow in the lower chemical agent releaser 12 cannot flow out from the space between the lower flow channel control plug 11 and the lower chemical agent releaser 12, a lower chemical agent release hole 13 is formed in the lower chemical agent releaser 12, the upper part of the lower chemical agent releaser 12 is connected with a middle coupling 9, the upper part of the middle coupling 9 is connected with the lower part of an upper chemical agent storage pipe 8, the lower flow channel control plug 11 is a part for sealing the lower part of the upper chemical agent storage pipe 8, the lower part of the lower chemical agent releaser 12 is connected with a lower chemical agent storage pipe 15, the lower part of the lower chemical agent storage pipe 15 is connected with a bottom sealing head 16, so that liquid flow outside the lower chemical agent storage pipe 15 cannot enter the lower chemical agent storage pipe 15 from the lower part of the lower chemical agent storage pipe 15, and a solid corrosion and scale inhibitor is arranged in the lower chemical agent releaser 12 and the lower chemical agent storage pipe 15. The lower agent releasing holes 13 are closed with a composite anode material 14.
The number of the holes of the communicating sieve holes 3 on the liquid inlet sieve tube 2 is 20-60, and the aperture of the communicating sieve holes 3 is 6-12mm, so that enough flow area is ensured. It is also within the scope of the invention if the communicating openings 3 in the inlet screen 2 are modified to be slots.
The number of the upper medicine releasing holes 7 on the upper medicine releaser 6 is 10-50, the aperture of the upper medicine releasing holes 7 is 6-12mm, the number of the lower medicine releasing holes 13 is 10-50, and the aperture of the lower medicine releasing holes 13 is 6-12mm.
The invention is arranged below the oil well pump, when the pumped well fluid flows upwards from the outside of the oil well pump, the pumped well fluid is mixed with the medicament released by the upper medicament releaser 6 and the lower medicament releaser 12 in time sharing, and the metal surface contacted when the mixed fluid flows through is not corroded and is not scaled. The well fluid mixed with the medicament enters from the liquid inlet screen pipe 2 and is pumped out by the oil well pump.
The medicament storage tube is made into 2m sections, and can be randomly connected according to the daily liquid amount of an oil well, so that the medicament loss can be avoided to the maximum extent.
The invention has simple and reasonable design and convenient construction, plays an important role in corrosion prevention and scale prevention of the oil well pipe column, the downhole tool and the oil collecting pipeline thereof, can delay the operation caused by corrosion and scale formation and reduce the operation cost.
Claims (3)
1. The utility model provides a device of relay formula release medicament in pumping well, includes tubing coupling (1), feed liquor screen pipe (2), becomes to detain coupling (4), runner control plug (5) go up, go up explosive release ware (6), go up explosive storage tube (8), middle part coupling 9, down runner control plug (11), explosive release ware (12), composite anode material (14), explosive storage tube (15), bottom closing head (16), the upper portion screw thread of tubing coupling (1) is supporting with the pump screw thread down of oil-well pump, characterized by: the lower part thread of the tubing coupling (1) is connected with the upper part thread of the liquid inlet sieve tube (2), the liquid inlet sieve tube (2) is provided with a communicating sieve pore (3), the lower part of the liquid inlet sieve tube (2) is connected with the upper part of the buckle connection hoop (4), an upper flow channel control plug (5) is arranged in an upper inner hole of the pesticide applying releaser (6) to ensure that the upper part of the pesticide applying releaser (6) is sealed, so that liquid flow in the pesticide applying releaser (6) can not flow upwards from the space between the upper flow channel control plug (5) and the pesticide applying releaser (6), the pesticide applying releaser (6) is provided with a pesticide applying releasing hole (7), the upper part of the pesticide applying releaser (6) is connected with the lower part of the buckle connection hoop (4), the upper part of the variable-buckle coupling (4) is connected to the lower part of the liquid inlet sieve tube (2), the lower part of the pesticide feeding agent releaser (6) is connected with the pesticide storage tube (8), the lower part of the pesticide feeding agent storage tube (8) is sealed, so that liquid flow outside the pesticide feeding agent storage tube (8) cannot enter the pesticide feeding agent storage tube (8) from the lower part of the pesticide feeding agent storage tube (8), solid corrosion and scale inhibitor is filled in the pesticide feeding agent storage tube (8) and the pesticide feeding agent releaser (6), a lower runner control plug (11) is arranged in an upper inner hole of the pesticide discharging agent releaser (12), so that the upper part of the pesticide discharging agent releaser (12) is sealed, and liquid flow in the pesticide discharging agent releaser (12) cannot control the plug (11) and the pesticide discharging agent releaser from the lower runner control plug (11) (12) The scale inhibitor is characterized in that the scale inhibitor flows out upwards, a chemical discharging releasing hole (13) is formed in a chemical discharging releaser (12), the upper portion of the chemical discharging releaser (12) is connected with a middle coupling (9), the upper portion of the middle coupling (9) is connected with the lower portion of an upper chemical storage pipe (8), a lower flow channel control plug (11) is a part for closing the lower portion of the upper chemical storage pipe (8), the lower portion of the chemical discharging releaser (12) is connected with a lower chemical storage pipe (15), the lower portion of the chemical discharging storage pipe (15) is connected with a bottom closing head (16), so that liquid flow outside the chemical discharging storage pipe (15) cannot enter the chemical discharging storage pipe (15) from the lower portion of the chemical discharging storage pipe (15), a solid corrosion inhibitor is filled in the chemical discharging releaser (12) and the chemical discharging storage pipe (15), and the chemical discharging releasing hole (13) is closed by a composite anode material (14).
2. The device for the relay release of a chemical agent in a pumping well according to claim 1, wherein: the number of the communicated sieve pores (3) on the liquid inlet sieve tube (2) is 20-60, and the aperture of the communicated sieve pores (3) is 6-12mm.
3. The device for relay release of a chemical in a pumping well according to claim 1, wherein: the number of the upper medicine releasing holes (7) on the upper medicine releaser (6) is 10-50, the aperture of the upper medicine releasing holes (7) is 6-12mm, the number of the lower medicine releasing holes (13) is 10-50, and the aperture of the lower medicine releasing holes (13) is 6-12mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710070940.1A CN106593358B (en) | 2017-02-09 | 2017-02-09 | Device for releasing medicament in pumping well in relay manner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710070940.1A CN106593358B (en) | 2017-02-09 | 2017-02-09 | Device for releasing medicament in pumping well in relay manner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106593358A CN106593358A (en) | 2017-04-26 |
| CN106593358B true CN106593358B (en) | 2022-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710070940.1A Active CN106593358B (en) | 2017-02-09 | 2017-02-09 | Device for releasing medicament in pumping well in relay manner |
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| Country | Link |
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| CN (1) | CN106593358B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU178242U1 (en) * | 2017-08-14 | 2018-03-28 | Публичное акционерное общество "Татнефть" имени В.Д. Шашина | INHIBITOR FEEDING DEVICE |
| CN108678710B (en) * | 2018-04-24 | 2020-09-15 | 山东三江能源科技有限公司 | Use method of acid salt scale prevention and removal device for water injection well |
| CN110578495A (en) * | 2019-08-27 | 2019-12-17 | 西南石油大学 | Automatic filling device and method for underground medicament |
| 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 |
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| CN102224320A (en) * | 2008-08-29 | 2011-10-19 | 哈利伯顿能源服务公司 | Sand control screen assembly and method for use of same |
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Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040115378A1 (en) * | 2002-12-16 | 2004-06-17 | Tetra Technologies, Inc. | Apparatus and method for the controlled release of chemical additives |
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|---|---|---|---|---|
| US3944064A (en) * | 1973-10-26 | 1976-03-16 | Alza Corporation | Self-monitored device for releasing agent at functional rate |
| CN200975233Y (en) * | 2006-09-05 | 2007-11-14 | 吐哈石油勘探开发指挥部钻采工艺研究院 | Down-hole slow corroding antisludging equipment for oil gas field |
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| CN106593358A (en) | 2017-04-26 |
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