CN200975233Y - Down-hole slow corroding antisludging equipment for oil gas field - Google Patents
Down-hole slow corroding antisludging equipment for oil gas field Download PDFInfo
- Publication number
- CN200975233Y CN200975233Y CN 200620119399 CN200620119399U CN200975233Y CN 200975233 Y CN200975233 Y CN 200975233Y CN 200620119399 CN200620119399 CN 200620119399 CN 200620119399 U CN200620119399 U CN 200620119399U CN 200975233 Y CN200975233 Y CN 200975233Y
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- releasing tube
- corrosion
- box cupling
- joint
- gas field
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Abstract
The utility model relates to a corrosion inhibiting and anti-scaling device designed for a production string applied in an oil-gas well. The utility model comprises an upper joint (1), a sieve tube (2), a blind joint (3), an upper release tube (4), a coupling (5), a charging barrel (6), solid corrosion inhibiting and anti-scaling agent (7), a coupling (8), a lower release tube (9) and a lower joint (10). The upper joint (1), the sieve tube (2), the blind joint (3), the upper release tube (4), the coupling (5), the charging barrel (6), the coupling (8), the lower release tube (9) and the lower joint (10) are connected successively; the solid corrosion inhibiting and anti-scaling agent (7) is arranged in the charging barrel (6). The device is simple and reliable and free of any movable part; the device is hung on the production string, and no maintenance is required. If proper agent is added, therein the corrosion and scaling speed can be slowed down, and replacement and overhaul of the production string in the well is prolonged. The pickling cycle of an oil-well adopting regular pickling technology is 3 months; however, the effective period exceeds 6 months, if the device is adopted and added with about 100kg GFG-II corrosion inhibiting and anti-scaling agent. However, the costs of the former and later are proximately equal.
Description
Technical field
The utility model relates to the corrosion-mitigation scale-inhibition device of a kind of oil gas field with oil well downhole production tubing string.
Background technology
Usually run into the problem of oil well down-hole string corrosion and scaling in oil gas field production development process.Cause the reason of oil well steel surface corrosion and scaling a lot, but mainly be output liquid salinity height, exist corrosive medium, mushroom and liquid in variation of factors such as flow process pressure, temperature etc.The dirt type depends on the content of different ions in the liquid, may be sulfate scale, also may be carbonate scale.In addition, the corrosion and fouling often weave in exist simultaneously.The method of inhibition or solution oil well steel surface corrosion and scaling also is various; as select harmful mushroom under the most rational metal material, cathodic protection, the control well, electromagnetism, ultrasonic wave, regularly inject the liquid corrosion inhibiting and descaling agent, regularly with pickling and periodic replacement down-hole string etc.; every technology has its compliance and limitation separately; but conclude, its common limitation mainly is that complex process, effect are relatively poor.There is common ground in the utility model with the regular liquid corrosion inhibiting and descaling agent technology of injecting, be that the two used chemical agent is same class material in itself, but regularly inject liquid corrosion inhibiting and descaling agent technology ground flow must be installed, be not suitable for north of china in winter and use the oil well of also uncomfortable crossed belt packer completion.
Summary of the invention
The purpose of this utility model is to provide a kind of oil gas field oil well down-hole corrosion-mitigation scale-inhibition device, it can overcome regular injection liquid corrosion inhibiting and descaling agent technical matters complexity, problems such as bad adaptability, device is suspended on down-hole string bottom, solid-state corrosion inhibiting and descaling agent (as particle, bulk, bar-shaped etc.) is equipped with in inside, when upwards flowing liquid is flowed through this device, the active ingredient of medicament corrosion-mitigation scale-inhibition discharges with liquid mixes, and corrosion and the fouling effect to steel surface in the process on extraction ground of such liquid just weakened greatly.
The utility model is achieved in that and comprises top connection, screen casing, blind joint, upward releasing tube, box cupling, cartridge, solid corrosion and scale inhibitor, box cupling, releasing tube, lower contact down, top connection, screen casing, blind joint, last releasing tube, box cupling, cartridge, box cupling, following releasing tube, lower contact connect successively, and solid corrosion and scale inhibitor is housed in the cartridge.
The beneficial effects of the utility model are: install simple and reliable, movement-less part, being suspended on no longer needs maintaining on the oil well down-hole string.Select proper drug to add wherein, will delay the speed of corrosion and scaling, prolong the cycle of flow string under replacing or the inspection-pit.Oil well is when adopting regular pickling technology, and its pickling cycle is 3 months, adopt this device to dose about 100 kilograms of GFG-II type corrosion inhibiting and descaling agents after, its period of validity has surpassed 6 months, the two cost is approaching.
Description of drawings
Accompanying drawing 1 is a structural representation of the present utility model.
The specific embodiment
As shown in Figure 1, comprise top connection 1, screen casing 2, blind joint 3, upward releasing tube 4, box cupling 5, cartridge 6, solid corrosion and scale inhibitor 7, box cupling 8, releasing tube 9, lower contact 10 down, top connection 1, screen casing 2, blind joint 3, last releasing tube 4, box cupling 5, cartridge 6, box cupling 8, following releasing tube 9, lower contact 10 connect successively, and solid corrosion and scale inhibitor 7 is housed in the cartridge 6.
All adopt between top connection 1, screen casing 2, blind joint 3, last releasing tube 4, box cupling 5, cartridge 6, box cupling 8, following releasing tube 9, the lower contact 10 and be threaded.
By blind joint 3, go up releasing tube 4, box cupling 5, box cupling 8, cartridge 6, the cavity of a upper and lower end face sealing constituting of releasing tube 9 and lower contact 10 down, the last releasing tube 4 and the following releasing tube 9 at cavity two ends also are the tubing nipples that has by-pass prot, the quantity of by-pass prot and diameter depend on the size of oilwell produced fluid amount and the performance of the chemical agent of adorning, and with assurance the dissolution velocity of chemical agent are controlled in the reasonable range.Blind joint 3 can contact with the direct of chemical agent in pipe by fluid partitioning between screen casing 2 and last releasing tube 4; Blind joint 3 and screen casing 2 provide a passage that enters in the pipe for the oil well fluid.
The active ingredient of corrosion inhibiting and descaling agent is dissolved in the water, by these by-pass prots discharge with flow in oil well liquid mix, thereby make liquid have the performance that is difficult for corrosion and scaling in the metal surface.Solid corrosion and scale inhibitor 7 is dosed in cartridge 6 cavitys, and after the chemical substance dissolving finished, the diameter of cartridge 6 and length can be regulated, and is chemical agent so that provide enough big capacity to load.
When flowing liquid is upwards flowed through the releasing tube up and down 4,9 of this device, the active ingredient of medicament corrosion-mitigation scale-inhibition is just mixed by the eyelet and the liquid of releasing tube, mixing material enters into the downhole production tubing string by screen casing 2 subsequently, and continues upwards to flow until reaching ground by the effect of pump.Because the effect of corrosion-mitigation scale-inhibition active ingredient, down-hole liquid corrosion and the fouling effect to steel surface in the process on extraction ground just weakened greatly.
Claims (5)
1, a kind of oil gas field oil well down-hole corrosion-mitigation scale-inhibition device, comprise top connection (1), screen casing (2), blind joint (3), upward releasing tube (4), box cupling (5), cartridge (6), solid corrosion and scale inhibitor (7), box cupling (8), releasing tube (9), lower contact (10) down, it is characterized in that: top connection (1), screen casing (2), blind joint (3), last releasing tube (4), box cupling (5), cartridge (6), box cupling (8), following releasing tube (9), lower contact (10) connect successively, and solid corrosion and scale inhibitor (7) is housed in the cartridge (6).
2, a kind of oil gas field according to claim 1 is characterized in that: adopt between top connection (1), screen casing (2), blind joint (3), last releasing tube (4), box cupling (5), cartridge (6), box cupling (8), following releasing tube (9), the lower contact (10) to be threaded with oil well down-hole corrosion-mitigation scale-inhibition device.
3, a kind of oil gas field according to claim 1 oil well down-hole corrosion-mitigation scale-inhibition device, it is characterized in that: screen casing (2) has the tubing nipple of by-pass prot.
4, a kind of oil gas field according to claim 1 oil well down-hole corrosion-mitigation scale-inhibition device, it is characterized in that: by the cavity that a upper and lower end face of blind joint (3), last releasing tube (4), box cupling (5), box cupling (8), cartridge (6), following releasing tube (9) and lower contact (10) formation is sealed, the last releasing tube (4) at cavity two ends and following releasing tube (9) have the tubing nipple of by-pass prot.
5, a kind of oil gas field according to claim 1 oil well down-hole corrosion-mitigation scale-inhibition device, it is characterized in that: blind joint (3) is positioned between screen casing (2) and the last releasing tube (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620119399 CN200975233Y (en) | 2006-09-05 | 2006-09-05 | Down-hole slow corroding antisludging equipment for oil gas field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620119399 CN200975233Y (en) | 2006-09-05 | 2006-09-05 | Down-hole slow corroding antisludging equipment for oil gas field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200975233Y true CN200975233Y (en) | 2007-11-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620119399 Expired - Fee Related CN200975233Y (en) | 2006-09-05 | 2006-09-05 | Down-hole slow corroding antisludging equipment for oil gas field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200975233Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003229A (en) * | 2015-07-13 | 2015-10-28 | 陕西明特石油技术有限公司 | Device for hanging preparations on inner wall of oil tube and using method of device |
| CN106593358A (en) * | 2017-02-09 | 2017-04-26 | 中国石油化工股份有限公司 | Relaying type agent releasing device in oil pumping well |
| CN109025907A (en) * | 2018-09-10 | 2018-12-18 | 中国石油天然气股份有限公司 | Controlled release medicament downhole tool in a kind of oil gas well shaft |
| 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 |
| 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 |
| CN112547723A (en) * | 2020-11-03 | 2021-03-26 | 中国石油天然气股份有限公司 | Slow-release scale removal ball for clearing pipes and pipe clearing method |
| CN112744932A (en) * | 2019-10-31 | 2021-05-04 | 南京水联天下海水淡化技术研究院有限公司 | Scale inhibition device and scale inhibition method for tunnel drainage system |
| CN115263241A (en) * | 2022-08-08 | 2022-11-01 | 周泽晟 | Down-hole turbulent flow long-acting corrosion-proof and scale-proof device |
-
2006
- 2006-09-05 CN CN 200620119399 patent/CN200975233Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003229A (en) * | 2015-07-13 | 2015-10-28 | 陕西明特石油技术有限公司 | Device for hanging preparations on inner wall of oil tube and using method of device |
| CN105003229B (en) * | 2015-07-13 | 2019-01-11 | 陕西明特石油技术有限公司 | A kind of device and its application method hanging preparation on tube inner wall |
| CN106593358A (en) * | 2017-02-09 | 2017-04-26 | 中国石油化工股份有限公司 | Relaying type agent releasing device in oil pumping well |
| CN106593358B (en) * | 2017-02-09 | 2022-12-30 | 中国石油化工股份有限公司 | Device for releasing medicament in pumping well in relay manner |
| CN109025907A (en) * | 2018-09-10 | 2018-12-18 | 中国石油天然气股份有限公司 | Controlled release medicament downhole tool in a kind of oil gas well shaft |
| 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 |
| CN112744932B (en) * | 2019-10-31 | 2023-08-08 | 南京水联天下水处理科技研究院有限公司 | Scale inhibition device and scale inhibition method for tunnel drainage system |
| CN112744932A (en) * | 2019-10-31 | 2021-05-04 | 南京水联天下海水淡化技术研究院有限公司 | Scale inhibition device and scale inhibition method for tunnel drainage system |
| 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 |
| CN112547723B (en) * | 2020-11-03 | 2022-08-05 | 中国石油天然气股份有限公司 | Slow-release scale removal ball for clearing pipes and pipe clearing method |
| CN112547723A (en) * | 2020-11-03 | 2021-03-26 | 中国石油天然气股份有限公司 | Slow-release scale removal ball for clearing pipes and pipe clearing method |
| 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 |
| 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 |
| CN115263241A (en) * | 2022-08-08 | 2022-11-01 | 周泽晟 | Down-hole turbulent flow long-acting corrosion-proof and scale-proof device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071114 Termination date: 20091009 |