CN2536765Y - Corrosionproof oil well casings with anodic rings - Google Patents
Corrosionproof oil well casings with anodic rings Download PDFInfo
- Publication number
- CN2536765Y CN2536765Y CN 02234374 CN02234374U CN2536765Y CN 2536765 Y CN2536765 Y CN 2536765Y CN 02234374 CN02234374 CN 02234374 CN 02234374 U CN02234374 U CN 02234374U CN 2536765 Y CN2536765 Y CN 2536765Y
- Authority
- CN
- China
- Prior art keywords
- casing
- oil well
- anode
- sleeve
- bracelet
- 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.)
- Expired - Lifetime
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- Prevention Of Electric Corrosion (AREA)
Abstract
The utility model relates to a bracelet anode anticorrosion oil well casing, and provides a casing bracelet anode sleeve having further protective effect when the anticorrosive coating is damaged. The utility model is characterized in that, a plurality of cylinder shaped bracelet anode sleeves (4) are sleeved with intervals on each of the upper casing (1) about to go down into an oil well, and the two ends of the sleeves (4) extending out of a conductor bar (3) are clipped on the casing (1) by a plurality of fixtures (2). The utility model has the advantages that, the strata at about 100 meters below the ground surface contains corrosive media, and if the bracelet anode sleeves, which are conductive sleeves made from anode material, are arranged on the upper casing of the oil well casing, then after the sleeve and the casing in the oil well are electrically connected, when soil or corrosive media corrodes the outer wall of the casing, the cylinder shaped anode bracelet anode sleeve having higher driving potential than that of the casing losts electrons and suffers from corrosion first, and therefore the casing is protected from corrosion, or the corrosion rate is slowed down.
Description
(1) technical field:
The utility model relates to the anticorrosion oil well sleeve pipe of bracelet anode of down-hole, oil field.
(2) background technology:
In the well of oil field sleeve pipe is arranged, the annular chamber that forms with the borehole wall injects cement paste, and sleeve pipe is fixed in the down-hole, and anticorrosive casing pipe is done paint coatings more at present, and sleeve pipe is in underground work time limit general requirements more than 30 years.And anticorrosive paint can wear out, chap after long-time; The 2nd, often to intermittently inject the high temperature washing fluid in the downhole production operation and make cover rostrum cold prominent heat to down-hole casing, cause that coating is easier breaks.Another kind method is to the jacket application impressed current, but the method one is to need impressed current, the 2nd, need equipment such as potentiostat, and need regularly add liquid, more by manual maintenance.
(3) utility model content:
Technical problem to be solved in the utility model is at the problem that exists in the background technology, and a kind of anticorrosion oil well sleeve pipe of bracelet anode that the anti-corrosion protection effect is arranged is provided.
The invention for solving the technical problem can reach by following technical solution: be jacketed with tubular bracelet anode cover at every mouthful on the upper sleeve of going into the well, these cover two ends are stretched out conductor rods and are stuck on the sleeve pipe with jig.
In such scheme, spacing is 10 to 12 meters between the tubular bracelet anode cover.Because tubular bracelet anode cover is installed on the upper sleeve of oil well sleeve pipe, it is to make conductive sleeve with anode material, this cover is with after electrosurgical trocar in the oil well connects, when soil or corrosive medium corrosion sleeve outer wall, the tubular bracelet anode cover higher than sleeve pipe driving current potential loses electronics earlier and corroded, and can reach purpose of design.
The utility model is compared with the above-mentioned background technology can have following beneficial effect: the stratum that the face of land is following about 100 meters contains corrosive medium; if tubular bracelet anode cover is installed on the upper sleeve that will be lowered to the oil well sleeve pipe; it is to make conductive sleeve with anode material; this cover is with after electrosurgical trocar in the oil well connects; when soil or corrosive medium corrosion sleeve outer wall; the tubular bracelet anode cover higher than sleeve pipe driving current potential loses electronics earlier and corroded; because tubular anode bracelet cover loses electronics earlier and corroded, thereby protective casing does not corrode or the slow speed of corrosion.
(4) description of drawings:
Fig. 1 is the installation drawing that tubular bracelet anode cover 4 is installed on the oil well sleeve pipe 1 that has been lowered to;
Fig. 2 is tubular bracelet anode cover mounting structure schematic diagram on Fig. 1.
(5) specific embodiment:
Below in conjunction with the drawings and specific embodiments will the utility model is described in further detail:
In conjunction with shown in Figure 2, be jacketed with tubular bracelet anode cover 4 by Fig. 1 on the every mouthful of upper sleeve that will go into the well 1, this overlaps 4 two ends and stretches out conductor rods 3 usefulness jigs 2 and be stuck on the sleeve pipe 1.
In such scheme, spacing is 10 to 12 meters between the tubular bracelet anode cover 4.Wherein tubular bracelet anode cover 4 is good conductive sleeves made from anode material, and this cover electrically connects with sleeve pipe 1.Jig 2 general clamps, its effect is that grip 4 firmly is stuck on the sleeve pipe 1.
Claims (2)
1, a kind of anticorrosion oil well sleeve pipe of bracelet anode that relates to, contain sleeve pipe (1) under the oil well, it is characterized in that: be jacketed with tubular bracelet anode cover (4) at every mouthful on the upper sleeve (1) of going into the well, this cover (4) two ends are stretched out conductor rods (3) and are stuck on the sleeve pipe (1) with jig (2).
2, oil well sleeve pipe according to claim 1 is characterized in that: spacing is 10 to 12 meters between the tubular bracelet anode cover (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02234374 CN2536765Y (en) | 2002-05-08 | 2002-05-08 | Corrosionproof oil well casings with anodic rings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02234374 CN2536765Y (en) | 2002-05-08 | 2002-05-08 | Corrosionproof oil well casings with anodic rings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2536765Y true CN2536765Y (en) | 2003-02-19 |
Family
ID=33709200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02234374 Expired - Lifetime CN2536765Y (en) | 2002-05-08 | 2002-05-08 | Corrosionproof oil well casings with anodic rings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2536765Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103938215A (en) * | 2014-03-20 | 2014-07-23 | 中国海洋石油总公司 | Bracelet anode installation technology |
| CN106801583A (en) * | 2016-12-29 | 2017-06-06 | 中国石油天然气股份有限公司 | Anti-corrosion safety tubing coupling |
-
2002
- 2002-05-08 CN CN 02234374 patent/CN2536765Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103938215A (en) * | 2014-03-20 | 2014-07-23 | 中国海洋石油总公司 | Bracelet anode installation technology |
| CN106801583A (en) * | 2016-12-29 | 2017-06-06 | 中国石油天然气股份有限公司 | Anti-corrosion safety tubing coupling |
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120508 Granted publication date: 20030219 |