CN202360083U - Detecting device for internal corrosion and scale formation of water injection string of oilfield water injection well - Google Patents
Detecting device for internal corrosion and scale formation of water injection string of oilfield water injection well Download PDFInfo
- Publication number
- CN202360083U CN202360083U CN2011205216396U CN201120521639U CN202360083U CN 202360083 U CN202360083 U CN 202360083U CN 2011205216396 U CN2011205216396 U CN 2011205216396U CN 201120521639 U CN201120521639 U CN 201120521639U CN 202360083 U CN202360083 U CN 202360083U
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- water injection
- lacing film
- hanger
- detecting device
- well
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Abstract
The utility model relates to a detecting device for internal corrosion and scale formation of a water injection string of an oilfield water injection well, which belongs to the technical field of oil production equipment. The detecting device comprises a body, a hanger blanking plug, a hanger bracket and a detecting hanger. A center hole and an eccentric hole are arranged on the body, and a first communication hole and a second communication hole are arranged between the center hole and the eccentric hole. The hanger blanking plug is placed in the eccentric hole, the hanger bracket is placed in the hanger blanking plug, and the detecting hanger is fixed on the hanger bracket. By the aid of the detecting device, underground corrosion or scale formation speed in the water injection string can be detected when the well is not repaired, and normal water injection is not affected. The detecting device not only saves time, labor and well repair cost, but also does not affect normal water injection.
Description
Technical field
The utility model relates to a kind of water injection string internal corrosion of water injection well in oil fields and the checkout gear of fouling, belongs to the oil exploration equipment technical field.
Background technology
Water injection well injects water quality because of defective and implantation temperature and pressure variation, causes water injection string electrochemical corrosion and fouling, influences water injection string life-span and multi-zone flow regulating.Corrosion mainly shows as spot corrosion of water injection string inwall even perforation, fouling cause that water injection pressure rises and testing tool under do not go or sit not sternly, cause well workover, cause huge waste.Tradition is surveyed water injection well down-hole string inner wall corrosion and the scale velocity method is: when well workover, earlier two kinds of lacing film devices are fixed in the different depth oil pipe, are lowered to pit shaft together with tubing string then, after a period of time, well workover trips out again.Every survey is once not only time-consuming, effort and workover cost are huge, also influences the water injection well development effectiveness, so seldom survey.
Summary of the invention
The purpose of the utility model is to propose a kind of water injection string internal corrosion of water injection well in oil fields and the checkout gear of fouling; Structure to existing checkout equipment is improved; To be used to detect downhole corrosion and foul in the water injection string; Take preventive measures according to corrosion and scale velocity, reduce the workover treatment number of times, reduce cost for oil production.
The water injection string internal corrosion of the water injection well in oil fields that the utility model proposes and the checkout gear of fouling; Comprise device body, lacing film blanking plug, lacing film carriage and detect lacing film; Have centre bore and eccentric orfice on the described device body, have first intercommunicating pore and second intercommunicating pore between centre bore and the eccentric orfice; Described lacing film blanking plug places eccentric orfice; Described lacing film carriage places the lacing film blanking plug; Described detection lacing film is fixed on the lacing film carriage.
The water injection string internal corrosion of the water injection well in oil fields that the utility model proposes and the checkout gear of fouling can detect downhole corrosion or scale velocity in the water injection string when not well workover, do not influence normal water filling.Use this checkout gear not only save time, laborsaving and save well repairing cost, and do not influence normal water filling.This checkout gear can solve water injection well and inject under water quality and the normal water filling situation in difference, measures the problem of water injection string or down-hole kit inner wall corrosion and scale velocity.
Description of drawings
Fig. 1 is the structure chart of checkout gear of water injection string internal corrosion and the fouling of the water injection well in oil fields that proposes of the utility model.
1 is the checkout gear body among Fig. 1; The 2nd, the lacing film blanking plug, the 3rd, the fixing lacing film carriage used of lacing film, the 4th, detect the detection lacing film of corrosion or scale velocity; The 5th, first intercommunicating pore between eccentric orfice and the centre bore; The 6th, second intercommunicating pore between eccentric orfice and the centre bore, the 7th, centre bore, the 8th, eccentric orfice.
The specific embodiment
The water injection string internal corrosion of the water injection well in oil fields that the utility model proposes and the checkout gear of fouling, its structure is as shown in Figure 1, comprises device body 1, lacing film blanking plug 2, lacing film carriage 3 and detects lacing film 4.Have centre bore 7 and eccentric orfice 8 on the device body 1, have first intercommunicating pore 5 and second intercommunicating pore 6 between centre bore 7 and the eccentric orfice 8.Lacing film blanking plug 2 places eccentric orfice 8.Lacing film carriage 3 places lacing film blanking plug 2, detects lacing film 4 and is fixed on the lacing film carriage 3.
The used for water injection wells in oil fields that the utility model proposes is surveyed downhole corrosion and fouling device in the water injection string, traditional oil-field flooding is transformed with eccentric injection mandrel and supporting blanking plug, respectively as fixed locator and lacing film blanking plug.Checkout gear body wherein; Its effect is lowered into the different depth of well, after the completion like fixed locator together with water injection string when well workover; The detection lacing film 4 that detects corrosion and scale velocity is packed in the lacing film blanking plug 2, repeatedly be lowered in the checkout gear body 12 respectively by testing steel wire.Behind design time, trip out respectively with the test steel wire again, can obtain corrosion or scale velocity, thereby reach the speed that not well workover can detect interior downhole corrosion of water injection string and fouling tripping out the lacing film analysis.Use this device not only save time, laborsaving and save well repairing cost, and do not influence normal water filling.This device can solve water injection well and inject under water quality and the normal water filling situation in difference, measures the problem of water injection string or down-hole kit inner wall corrosion and scale velocity.
Have first intercommunicating pore 5 and second intercommunicating pore 6 between centre bore 7 on the body of checkout gear and the eccentric orfice 8,, make centre bore 7 and eccentric orfice 8 have two places to be interconnected, reach injection water and advance intercommunicating pore to go out from last intercommunicating pore through these two intercommunicating pores.Detect lacing film 4 and be installed in the lacing film carriage 3, and not with any Metal Contact.Detect body 1 during measurement and when well workover, be lowered to different depth together with water injection string; After the completion, pack in the lacing film blanking plug, be lowered to respectively in the corresponding fixed locator by the test steel wire surveying corrosion or scale velocity lacing film; Trip out respectively with the test steel wire again to design time, be used for detecting.
Claims (1)
1. the water injection string internal corrosion of a water injection well in oil fields and the checkout gear of fouling; It is characterized in that this checkout gear comprises device body, lacing film blanking plug, lacing film carriage and detects lacing film; Have centre bore and eccentric orfice on the described device body, have first intercommunicating pore and second intercommunicating pore between centre bore and the eccentric orfice; Described lacing film blanking plug places eccentric orfice; Described lacing film carriage places the lacing film blanking plug; Described detection lacing film is fixed on the lacing film carriage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205216396U CN202360083U (en) | 2011-12-14 | 2011-12-14 | Detecting device for internal corrosion and scale formation of water injection string of oilfield water injection well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205216396U CN202360083U (en) | 2011-12-14 | 2011-12-14 | Detecting device for internal corrosion and scale formation of water injection string of oilfield water injection well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202360083U true CN202360083U (en) | 2012-08-01 |
Family
ID=46571275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205216396U Expired - Fee Related CN202360083U (en) | 2011-12-14 | 2011-12-14 | Detecting device for internal corrosion and scale formation of water injection string of oilfield water injection well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202360083U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209344A (en) * | 2018-09-14 | 2019-01-15 | 大港油田集团有限责任公司 | A kind of water injection well centering type corrosion monitor |
| CN110836950A (en) * | 2018-08-16 | 2020-02-25 | 中国石油天然气股份有限公司 | Corrosion monitoring device and be used for water injection well corrosion monitoring's tubular column |
-
2011
- 2011-12-14 CN CN2011205216396U patent/CN202360083U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110836950A (en) * | 2018-08-16 | 2020-02-25 | 中国石油天然气股份有限公司 | Corrosion monitoring device and be used for water injection well corrosion monitoring's tubular column |
| CN110836950B (en) * | 2018-08-16 | 2022-03-29 | 中国石油天然气股份有限公司 | Corrosion monitoring device and be used for water injection well corrosion monitoring's tubular column |
| CN109209344A (en) * | 2018-09-14 | 2019-01-15 | 大港油田集团有限责任公司 | A kind of water injection well centering type corrosion monitor |
| CN109209344B (en) * | 2018-09-14 | 2022-07-08 | 大港油田集团有限责任公司 | Eccentric corrosion monitoring device for water injection well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20201214 |