CN2117459U - Magnetic tube magnetizer for drilling mud - Google Patents
Magnetic tube magnetizer for drilling mud Download PDFInfo
- Publication number
- CN2117459U CN2117459U CN 92200146 CN92200146U CN2117459U CN 2117459 U CN2117459 U CN 2117459U CN 92200146 CN92200146 CN 92200146 CN 92200146 U CN92200146 U CN 92200146U CN 2117459 U CN2117459 U CN 2117459U
- Authority
- CN
- China
- Prior art keywords
- magnetic
- permanent magnetism
- mud
- magnetizer
- drilling mud
- 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.)
- Granted
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Abstract
The utility model relates to a magnetic tube magnetizer for drilling mud, which is mainly composed of a metal tube body, permanent magnetism plates and a fixed clip. Permanent magnetism strips are arranged side by side to form the permanent magnetism plates. The S pole of every permanent magnetism strip is corresponding to the N pole of the adjacent or corresponding permanent magnetism strip. An upper permanent magnetism plate and a lower permanent magnetism plate which are parallel and corresponding are arranged in the tube body to form a closed magnetic circuit, so that a magnetic field with 2000 to 3500 gausses can be obtained. When the mud passes through the vertical cutting magnetic force line of the magnetic circuit, the mud is magnetized, so that the physicochemical property and the structural state of the mud and mud matrix are altered.
Description
The utility model relates to magnetic tube magnetizer in a kind of oil well cement paste.
At present, in petroleum drilling engineering, after boring the completion eye,, in the annular space between oil well cement paste sprue bushing and the stratum, wait to solidify back sealing oil-gas-water layer, be referred to as well cementation sleeve pipe lower going-into-well intraocular.The purpose of well cementation is to prevent that oil gas water from going here and there mutually, is beneficial to recover the oil better, the construction of gas production and well stimulations such as down-hole acidifying, pressure break and water filling.In cementing operation before, mainly take to add relevant chemical addition agent to cement paste, improve its sealing ability, but the oil gas water channelling that normal appearance causes because of sealing is bad causes cementing quality defective, has a strong impact on oil recovery, the production of gas production.
The purpose of this utility model is to provide a kind of interior magnetic tube magnetizer, allows oil well cement paste through sealing oil-gas-water layer between magnetizer magnetization processing back sprue bushing and the stratum.Overcome the not high technological deficiency of prior art cementing quality.
The utility model mainly is made of the fixing card of the permanent magnetic plate of forming with permanent magnetic strip, metal body and metal.
When oil well cement paste during by the vertical magnetizer of magnetic circuit, the cement paste cutting magnetic line is subjected to magnetization and handles (magnetic field can reach 2000-3500 Gauss), has changed the physicochemical property and the structural behavior of cement paste and cement stone.
After adopting the utility model, improve the flowability of oil well cement paste, the ability that has improved sealing oil gas water and the well cementation factor of merit, reduced the fluid loss of oil well cement paste, increased the compressive strength of hardened oilwell cement, the anticol knotting strength.Because adopted this practical, cement stone compressive strength improves more than 15%, the anticol knotting strength improves more than 10%, and cement paste is mobile to improve 20%, and fluid loss reduces more than 20%.The acoustic amplitude logging factor of merit improves more than 5%.
The concrete structure of utility model is provided by following examples and accompanying drawing thereof.
Fig. 1 is the main pseudosection according to the magnetizer that the utility model proposes.Wherein (1) is the metal body, and (2) are the permanent magnetic plates that permanent magnetic strip is formed, and (3) are the fixing cards of metal.
Fig. 2 is a side cutaway view of the present utility model.
Among Fig. 1, four permanent magnetic plates (2) are arranged in the body (1), every permanent magnetic plate card (3) that is fixed blocks, and last magnetic sheet is parallel staggered relatively with following magnetic sheet.Every magnetic sheet is by 5 magnetic stripe placed side by side compositions, and the length of magnetic sheet is consistent with the length of fixing card.
In Fig. 2, (3) one sides are fluted magnetic sheet (2) can be blocked for fixing card, and the radian of opposite side is consistent with body (1) inner surface radian and be welded on the inner surface of body.The N utmost point of the extremely all corresponding adjacent or relative magnetic stripe of the S of the magnetic stripe in every magnetic sheet forms annular closed magnetic circuit in body.
As embodiment, can increase or reduce magnetic stripe quantity according to required magnetic field power or body length.
Claims (1)
1, magnetic tube magnetizer in a kind of oil well cement paste, it is characterized in that this magnetizer is by metal body (1), fixing card (3) and constitute by the permanent magnetic strip permanent magnetic plate of forming placed side by side (2), the fixing card of metal (3) one face down bondings are at the inner surface of body (1), the groove of opposite side blocks permanent magnetic plate (2), the S of each magnetic stripe is the N utmost point of corresponding adjacent or relative magnetic stripe extremely all, and last magnetic sheet is parallel staggered relatively with following magnetic sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92200146 CN2117459U (en) | 1992-01-11 | 1992-01-11 | Magnetic tube magnetizer for drilling mud |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92200146 CN2117459U (en) | 1992-01-11 | 1992-01-11 | Magnetic tube magnetizer for drilling mud |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2117459U true CN2117459U (en) | 1992-09-30 |
Family
ID=4947473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92200146 Granted CN2117459U (en) | 1992-01-11 | 1992-01-11 | Magnetic tube magnetizer for drilling mud |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2117459U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1080814C (en) * | 1997-10-31 | 2002-03-13 | 胜利石油管理局钻井工艺研究院 | Electric cement mortar treater |
-
1992
- 1992-01-11 CN CN 92200146 patent/CN2117459U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1080814C (en) * | 1997-10-31 | 2002-03-13 | 胜利石油管理局钻井工艺研究院 | Electric cement mortar treater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |