CN201857952U - Underground electromagnetic detecting instrument - Google Patents
Underground electromagnetic detecting instrument Download PDFInfo
- Publication number
- CN201857952U CN201857952U CN2010205643226U CN201020564322U CN201857952U CN 201857952 U CN201857952 U CN 201857952U CN 2010205643226 U CN2010205643226 U CN 2010205643226U CN 201020564322 U CN201020564322 U CN 201020564322U CN 201857952 U CN201857952 U CN 201857952U
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- probe
- sonde
- gamma
- transversal
- housing
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Abstract
The utility model relates to an underground electromagnetic detecting instrument which comprises a housing, a temperature probe, a gamma probe, a longitudinal probe, a transverse probe, a lower transverse probe and connecting rods, wherein the gamma probe, the transverse probe, the lower transverse probe, the longitudinal probe and the temperature probe are sequentially mounted and connected in the housing, and the gamma probe, the longitudinal probe, the transverse probe, the lower transverse probe and the temperature probe are sequentially connected together in series through the connecting rods. The underground electromagnetic detecting instrument has multiple functions, can not only detect the positions of deformation, cracks, holes and fracture on the inner wall of a casing, but also accurately judge the damage change situation outside the casing, has the characteristics of simple structure, convenience in operation, low cost, high accuracy, high degree of automation and the like, and can be widely applied in casing damage detection process tools of oil recovery wells.
Description
One, technical field
The utility model relates to oil-water well well detecting instrument in the oil exploitation process, particularly a kind of downhole electromagnetic detector.
Two, background technology
Development process along with oil field development, all multifactor influences such as the burn into embrittlement of down-hole pernicious gas, hazardous substances and frequent oil-water well measure and well workover construction and casing programme, completion cementing quality, sleeve pipe material, the technology status of Casing Failure is become worse and worse, cause casing deformation, bore a hole, break, situation such as bad break takes place, make the oil-water well can not ordinary production, even cause stopping production, scrapping.Traditional casing damaged well detection method, for Casing Failure is out of shape, bores a hole, is broken, the detection of bad break has been brought into play important function, but existed following shortcoming or deficiency simultaneously: 1. impression method mainly is incorporated in the checking of workover treatment process middle sleeve degree of impairment; 2. well temperature and isotope detection method are mainly used in the damage location that detects sleeve pipe; 3. multiple feeler caliper then is the internal diameter that detects sleeve pipe by feeler arm, although how the number of feeler arm is can be to 80 arms, but still can not the tubing string in the 360O scope be detected, and logging speed is slow, surveys the wall thickness less than tubing string; 4. the problem of under-mine TV method existence is that logging speed is slow, system complex, and communications Act of 1934 is difficult to use to the occasion that opaque liquid is arranged in managing under the optical well, and can only observe casing inner diameter.
Three, summary of the invention
The purpose of this utility model provides a kind of downhole electromagnetic detector, adopt temperature, natural gamma, the vertical comprehensive electromagnetic induction detection architecture of major axis and a plurality of probes combinations such as horizontal, the shortcoming or the deficiency that overcome effectively or avoid existing in the above-mentioned prior art.
Downhole electromagnetic detector described in the utility model, comprise housing, temp probe, gamma-ray probe, vertical sonde, transversal sonde, following transversal sonde and connecting rod, it is characterized in that in the described housing installing in turn and be connected with gamma-ray probe, transversal sonde, transversal sonde, vertical sonde and temp probe down, described gamma-ray probe, vertical sonde, transversal sonde, transversal sonde and temp probe are sequentially connected togather by connecting rod down.
Wherein, described gamma-ray probe is installed on the upper end of housing, and temp probe is installed on the bottom of housing.Described gamma-ray probe is connected by connecting rod with transversal sonde.Described transversal sonde is connected with connecting rod one end, and the other end of connecting rod passes down transversal sonde and is connected with temp probe with vertical sonde.
The utility model has following advantage compared with prior art:
1, function is strong, not only can survey distortion, crack, hole, the fracture position of internal surface of sleeve pipe, can also accurately judge the damage situation of change of jacket exterior;
2, simple in structure, easy to operate;
3, accuracy rate height;
4, automaticity height;
5, with low cost.
Four, description of drawings
Accompanying drawing 1 is a kind of example structure schematic diagram of utility model;
Five, the specific embodiment
As shown in Figure 1, a kind of downhole electromagnetic detector comprises housing 6, temp probe 5, gamma-ray probe 1, vertical sonde 4, transversal sonde 2, following transversal sonde 3 and connecting rod 7.Install in turn in the housing 6 and be connected with gamma-ray probe 1, transversal sonde 2, following transversal sonde 3, vertical sonde 4 and temp probe 5.Gamma-ray probe 1, vertical sonde 4, transversal sonde 2, following transversal sonde 3 and temp probe 5 are sequentially connected togather by connecting rod 7.
Gamma-ray probe 1 is installed on the upper end of housing 6, and temp probe 5 is installed on the bottom of housing 6.Gamma-ray probe 1 is connected by connecting rod 7 with transversal sonde 2.Transversal sonde 2 is connected with an end of connecting rod 7, and the other end of connecting rod 7 passes down transversal sonde 3 and is connected with temp probe 5 with vertical sonde 4.
During operation, provide an electric current, just produce time dependent induced electromotive force ε to the utility model.When the tubing and casing varied in thickness or when having defective, induced electromotive force ε will change, and by analyzing and calculating, can obtain the wall thickness of crack, hole and the tubing string of tubing string.Temp probe 5 detects the variation of borehole fluid thermal field, determines the position of liquid outlet; Gamma-ray probe 1 is surveyed well bore natural gamma intensity on every side, and it is dark to be used for the school; Transversal sonde 2, following transversal sonde 3 and vertical sonde 4 can send the magnetic line of force of different directions, survey comprehensive cover and decrease changing condition.
Claims (4)
1. downhole electromagnetic detector, comprise housing, temp probe, gamma-ray probe, vertical sonde, transversal sonde, following transversal sonde and connecting rod, it is characterized in that in the described housing installing in turn and be connected with gamma-ray probe, transversal sonde, transversal sonde, vertical sonde and temp probe down, described gamma-ray probe, vertical sonde, transversal sonde, transversal sonde and temp probe are sequentially connected togather by connecting rod down.
2. downhole electromagnetic detector according to claim 1 is characterized in that described gamma-ray probe is installed on the upper end of housing, and temp probe is installed on the bottom of housing.
3. downhole electromagnetic detector according to claim 1 is characterized in that described gamma-ray probe is connected by connecting rod with transversal sonde.
4. according to claim 1 or 3 described downhole electromagnetic detectors, it is characterized in that described transversal sonde is connected with connecting rod one end, the other end of connecting rod passes down transversal sonde and is connected with temp probe with vertical sonde.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205643226U CN201857952U (en) | 2010-10-10 | 2010-10-10 | Underground electromagnetic detecting instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205643226U CN201857952U (en) | 2010-10-10 | 2010-10-10 | Underground electromagnetic detecting instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201857952U true CN201857952U (en) | 2011-06-08 |
Family
ID=44103762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205643226U Expired - Fee Related CN201857952U (en) | 2010-10-10 | 2010-10-10 | Underground electromagnetic detecting instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201857952U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102400672A (en) * | 2011-11-03 | 2012-04-04 | 西安科技大学 | Detecting system and method for lithology of ultrasmall-caliber drilling hole |
| CN104481506A (en) * | 2014-12-05 | 2015-04-01 | 贵州航天凯山石油仪器有限公司 | Casing breaking position detecting method |
-
2010
- 2010-10-10 CN CN2010205643226U patent/CN201857952U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102400672A (en) * | 2011-11-03 | 2012-04-04 | 西安科技大学 | Detecting system and method for lithology of ultrasmall-caliber drilling hole |
| CN102400672B (en) * | 2011-11-03 | 2014-09-24 | 西安科技大学 | Detecting method for lithology of ultrasmall-caliber drilling hole |
| CN104481506A (en) * | 2014-12-05 | 2015-04-01 | 贵州航天凯山石油仪器有限公司 | Casing breaking position detecting method |
| CN104481506B (en) * | 2014-12-05 | 2017-04-12 | 贵州航天凯山石油仪器有限公司 | Casing breaking position detecting method |
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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: 20110608 Termination date: 20111010 |