CN202417489U - Housing for logging-while-drilling electromagnetic wave resistivity measurement instrument - Google Patents
Housing for logging-while-drilling electromagnetic wave resistivity measurement instrument Download PDFInfo
- Publication number
- CN202417489U CN202417489U CN2012200118599U CN201220011859U CN202417489U CN 202417489 U CN202417489 U CN 202417489U CN 2012200118599 U CN2012200118599 U CN 2012200118599U CN 201220011859 U CN201220011859 U CN 201220011859U CN 202417489 U CN202417489 U CN 202417489U
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- CN
- China
- Prior art keywords
- housing
- short section
- buckle closure
- electromagnetic wave
- buckling
- 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 - Fee Related
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- Geophysics And Detection Of Objects (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The utility model discloses a housing for a logging-while-drilling electromagnetic wave resistivity measurement instrument, to solve the problem of limitation of motor machinery and physical spaces. A main body is a short section, wherein the upper end of the short section adopts an internal thread structure, the lower end of the short section adopts an external thread structure, three-level step slots are milled on the outer wall of the short section, and are provided with matched buckling covers, the buckling covers are fixed on the step slots through screws, then an instrument element installing cavity is formed between the short section and the buckling covers, a plurality of antenna slots are formed in the outer surfaces of the buckling covers from top to bottom, and are fixed with corresponding cover boards, a through hole is formed between the center of the bottom of each antenna slot and the instrument element installing cavity, and in addition, the inner surface of the buckling cover between the antenna slots is provided with a battery and a circuit board installing slot. The housing of the application is compact in structure and high in strength and vibration resistance, is suitable for the severe underground working conditions, is also very convenient to assemble and disassemble, and realizes the on-site operation of the electromagnetic wave resistivity measurement instrument.
Description
Technical field
The utility model relates to a kind of oil drilling downhole testing instrument, and concrete is the electromagnetic resistivity measuring apparatus.
Background technology
Measurement-while-drilling system LWD disposes electromagnetic wave resistivity instrument usually at present, and it can measure the resistivity geologic parameter on stratum, carries out hole trajectory control in view of the above.With boring electromagnetic resistivity is the primary difficult problem that LWD logs well, and near drill bit, realizes the measurement of electromagnetic resistivity, owing to receive the restriction of motor machinery and physical space, the structure design of its housing is difficulty very.Measurement-while-drilling system adopts electric pole type to carry out the measurement of nearly drill bit resistivity usually both at home and abroad, and it is compared with the electromagnetic wave mode, and precision is low, applicable surface is narrow, especially in oil-base mud, can't measure.
Summary of the invention
The purpose of the utility model provides a kind of with the housing that bores the electromagnetic resistivity measuring apparatus, and this housing has solved the problem of motor machinery and physical space limitations, provides safeguard for measure nearly drill bit resistivity with the electromagnetic wave mode.
For realizing the foregoing invention purpose; The technical scheme that the application adopts is: with the housing that bores the electromagnetic resistivity measuring apparatus; Its main body is that the upper end adopts female thread structure, lower end to adopt the pipe nipple of external thread structure, and the outer wall of pipe nipple is milled with three grades of step troughs, and the buckle closure that matches is set on the step trough; Buckle closure through screw after on the step trough; Form instrument element between pipe nipple and the buckle closure chamber is installed, some days wire casings are set from top to bottom, fixing corresponding cover plate on day wire casing at the external surface of buckle closure; Bottom land center and the instrument element of wire casing installed between the chamber through hole be set each day, and battery and circuit board mounting groove are set on the buckle closure inner surface between the sky wire casing in addition.
The beneficial effect of the utility model: the application's housing adopts buckle closure formula structure; In limited space, realized the installation of the whole components and parts of resistivity instrument; Compact overall structure, intensity and anti-seismic performance are high, adapt to the abominable operating mode in down-hole; Install, dismounting is also all very convenient, realized the execute-in-place of electromagnetic resistivity measuring apparatus.
Description of drawings
Fig. 1 is the structural representation of the housing of the application's electromagnetic resistivity measuring apparatus.
The specific embodiment
Below in conjunction with accompanying drawing the application is further described:
By shown in Figure 1: with the housing that bores the electromagnetic resistivity measuring apparatus; Its main body is that the upper end adopts female thread structure, lower end to adopt the pipe nipple 1 of external thread structure; The outer wall of pipe nipple 1 is milled with three grades of step troughs, and the buckle closure 2 match is set on the step trough, buckle closure 2 through screw after on the step trough; Form instrument element between pipe nipple and the buckle closure chamber 3 is installed, the components and parts that instrument is big are installed in this chamber; External surface at buckle closure is provided with some days wire casings 4 from top to bottom, and emission, reception antenna are installed in day wire casing 4, and antenna is installed the back and used the glue sealing; Preferred non-airtight cooperation between the fixing corresponding cover plate 5 on it wire casing 4, cover plate 5 and day wire casing 4, but between the two the gap is set; Electromagnetic wave sends from the gap between cover plate 5 and day wire casing 4, because subsurface environment is abominable, vibration is big; Cover plate 5 can effectively be protected antenna, does not influence electromagnetic wave again and sends; Each day wire casing 4 bottom land center and instrument element install between the chamber through hole 6 be set; The battery and the circuit board mounting groove 7 of instrument are set on the buckle closure inner surface between the sky wire casing 4 in addition, and the emission in the sky wire casing, the antenna that reception antenna is drawn are connected with circuit board through through hole 6.Describe and to know by technique scheme; Be placed in installation chamber 3, mounting groove 7 and day wire casing 4 in pipe nipple 1 sidewall with each components and parts that bores the electromagnetic resistivity measuring apparatus; Can not receive the restriction of motor machinery and physical space; It is little that electromagnetic wave signal receives interference, improved measuring accuracy, realized the execute-in-place of electromagnetic resistivity measuring apparatus.
Claims (1)
1. with the housing that bores the electromagnetic resistivity measuring apparatus; Its main body is that the upper end adopts female thread structure, lower end to adopt the pipe nipple of external thread structure, and it is characterized in that: the outer wall of said pipe nipple is milled with three grades of step troughs, and the buckle closure that matches is set on the step trough; Buckle closure through screw after on the step trough; Form instrument element between pipe nipple and the buckle closure chamber is installed, some days wire casings are set from top to bottom, fixing corresponding cover plate on day wire casing at the external surface of buckle closure; Bottom land center and the instrument element of wire casing installed between the chamber through hole be set each day, and battery and circuit board mounting groove are set on the buckle closure inner surface between the sky wire casing in addition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200118599U CN202417489U (en) | 2012-01-12 | 2012-01-12 | Housing for logging-while-drilling electromagnetic wave resistivity measurement instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200118599U CN202417489U (en) | 2012-01-12 | 2012-01-12 | Housing for logging-while-drilling electromagnetic wave resistivity measurement instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202417489U true CN202417489U (en) | 2012-09-05 |
Family
ID=46742262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200118599U Expired - Fee Related CN202417489U (en) | 2012-01-12 | 2012-01-12 | Housing for logging-while-drilling electromagnetic wave resistivity measurement instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202417489U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937020A (en) * | 2012-11-27 | 2013-02-20 | 北京华航无线电测量研究所 | Resistivity electronic cabin provided with elastic supporting structure |
| CN105301631A (en) * | 2015-11-26 | 2016-02-03 | 中国矿业大学(北京) | Node type non-cable seismograph shell |
| CN107387070A (en) * | 2017-07-07 | 2017-11-24 | 中国石油集团渤海钻探工程有限公司 | One kind is with brill well logging resistivity measurement pipe nipple |
-
2012
- 2012-01-12 CN CN2012200118599U patent/CN202417489U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937020A (en) * | 2012-11-27 | 2013-02-20 | 北京华航无线电测量研究所 | Resistivity electronic cabin provided with elastic supporting structure |
| CN102937020B (en) * | 2012-11-27 | 2015-05-06 | 北京华航无线电测量研究所 | Resistivity electronic cabin provided with elastic supporting structure |
| CN105301631A (en) * | 2015-11-26 | 2016-02-03 | 中国矿业大学(北京) | Node type non-cable seismograph shell |
| CN105301631B (en) * | 2015-11-26 | 2017-03-22 | 中国矿业大学(北京) | Node type non-cable seismograph shell |
| CN107387070A (en) * | 2017-07-07 | 2017-11-24 | 中国石油集团渤海钻探工程有限公司 | One kind is with brill well logging resistivity measurement pipe nipple |
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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: 20120905 Termination date: 20140112 |