CN202690038U - Sector cementing well measuring instrument - Google Patents
Sector cementing well measuring instrument Download PDFInfo
- Publication number
- CN202690038U CN202690038U CN 201220188695 CN201220188695U CN202690038U CN 202690038 U CN202690038 U CN 202690038U CN 201220188695 CN201220188695 CN 201220188695 CN 201220188695 U CN201220188695 U CN 201220188695U CN 202690038 U CN202690038 U CN 202690038U
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- sector
- sound wave
- well measuring
- ground layer
- receiving transducer
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- Withdrawn - After Issue
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- Geophysics And Detection Of Objects (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The utility model discloses a sector cementing well measuring instrument which comprises a sound wave emission source on a sonic system, a 3ft sound wave emission source on the sonic system and a 5ft sound wave receiving source, wherein the sound wave emission source adopts a single-pole emitter, a single-pole receiving transducer for detecting a fast ground layer is placed at a 1ft position simultaneously, and in well measuring, the single-pole receiving transducer transmits the first wave amplitude and the arrival time of the position to a ground numerical control system to monitor whether the fast ground layer is encountered; and a 10-sector receiving transducer is placed at a 2ft source distance position. The sector cementing well measuring instrument firstly solves the problem that the fast ground layer is encountered during well measuring. When the spreading speed of the sound wave in the ground layer is larger than the spreading speed of the sound wave in the casing pipe, the sound wave is received by a conventional 2ft sector and a 3ft sound amplifier, the obtained wave shapes can be ground layer waves and can be screened by the sector cementing well measuring instrument, the wrong well measuring explanation can be avoided, instruments down into the well are meticulous, and the cementing condition of a first interference can be reflected accurately.
Description
SkillThis area:
The utility model relates to the logger in the field of petroleum exploitation, is specifically related to a kind of sector cement bond logging instrument of structure optimization.
Background technology:
When carrying out the cased well acoustic logging, commonly used is common variable density acoustic logging instrument, it generally comprises two kinds of measuring abilities, i.e. the full wave train log (the cementing situation that shows the first interface) of the acoustic amplitude logging of 3ft spacing (the cementing situation that shows the first interface) and 5ft spacing.Because the 3ft spacing is omnidirectional reception, when being subject to the affecting of the factors such as little annular space, mud property variation, can not identify to a certain degree groove and the orientation thereof of size.On the domestic and international market, some sector cement bond logging instruments also occurred, but the common investigative range of these instruments is larger at present, precision is lower.Simultaneously, when running into rapid stratum, owing to not taking effective measures, can't avoid occurring the situation that mistake is surveyed.
The utility model content:
The purpose of this utility model is to solve common variable density log instrument and conventional sector logging instrument can not accurately show the cementing situation at the first interface, and when running into rapid stratum, the problem of the situation that mistake surveys occurs, and a kind of sector cement bond logging instrument is provided.
The technical solution of the utility model: a kind of sector cement bond logging instrument, comprise 3ft sound wave reception sources and 5ft sound wave reception sources on acoustic emission source on the sonic system, the sonic system, monopole transmitters is adopted in the acoustic emission source, simultaneously at one pole receiving transducer that detects quick bottom of 1ft (1ft is apart from 1 foot of sound source) location arrangements, during well logging this one pole receiving transducer earthward digital control system transmit the first wave amplitude of this position and time then, be used for monitoring and whether run into rapid stratum; In 2ft spacing position, arrange a sector receiving transducer.
Receive for 1ft, because spacing is shorter, for eliminating the impact of direct wave, the acoustic impedance material of sampling multilayer unlike material is decayed to direct wave between sound source and 1ft, makes it satisfy logging requirements; The core of the reception of 2ft spacing is sector transducer, this sector transducer comprises piezoelectric ceramic tube and electrode, being evenly distributed with vertically 8～30 electrodes in the piezoelectric ceramic tube side, is the sector receiving plane between each electrode, so that the investigative range of each sector is approximately 90o～24o.This sector transducer effective electro-mechanical couple factor is high, high conformity.
Beneficial effect: the utility model runs into the problem of rapid stratum when at first having solved well logging, when the spread speed of sound wave in this stratum during greater than the spread speed in sleeve pipe, conventional 2ft sector receives and the 3ft sound width of cloth receives, the waveform of gained may be formation wave, the utility model can be screened it, avoid causing the situation of well log interpretation mistake to occur, secondly, owing to adopting newly-designed high-performance sector receiving transducer, not only so that the original waveform amplitude that receives is larger, and the more conventional sector cement bonding downhole probe of the investigative range of each sector is more careful, thereby reflects more accurately the cementing situation at the first interface.
Description of drawings
Fig. 1 is the utility model sector cement bond logging instrument shell schematic diagram;
Fig. 2 is the schematic internal view of Fig. 1;
Fig. 3 is the sector transducer structural representation.
Among the figure: 1-top connection, 2-sealing-plug, 3-one pole transmitting transducer, 4-sound insulating material, 5-1ft one pole receiving transducer, 6-2ft sector receiving transducer, 7-3ft one pole receiving transducer, 8-5ft one pole receiving transducer, 9-lower contact, 10-sonic system, 11-sector transducer earthenware, 12-sector transducer electrode.
The specific embodiment
Embodiment one: referring to Fig. 1, Fig. 2 and Fig. 3, a kind of sector cement bond logging instrument, the two ends of sonic system 10 are respectively top connection 1 and lower contact 9, acoustic emission source and sound wave reception sources are set between two joints, wherein one pole transmitting transducer 3 is adopted in the acoustic emission source, is positioned at top connection sealing-plug 2 rear sides.Be derived near to the sound wave reception sources that difference in functionality far is set apart from this acoustic emission, a 1ft one pole receiving transducer 5 that detects quick bottom of 1ft position (apart from 1 foot position of sound source) successively, the 2ft sector receiving transducer 6 of 2ft position, the 3ft sound wave reception sources 7 of 3ft position, the 5ft sound wave reception sources 8 of 5ft position.
Wherein, when well logging 1ft one pole receiving transducer 5 earthward digital control system transmit the first wave amplitude of this position and time then, be used for monitoring and whether run into rapid stratum.Receive for 1ft.Because spacing is shorter, for eliminating the impact of direct wave, 4 pairs of direct waves of sound insulation materials of sampling multilayer unlike material are decayed between sound source and 1ft, make it satisfy logging requirements.
The core of the reception of 2ft spacing is sector transducer, this sector transducer comprises piezoelectric ceramic tube and electrode, being evenly distributed with vertically 8～30 electrodes in the piezoelectric ceramic tube side, is the sector receiving plane between each electrode, so that the investigative range of each sector is approximately 90o～24o.This sector transducer effective electro-mechanical couple factor is high, high conformity.
Claims (3)
1. sector cement bond logging instrument, comprise 3ft sound wave reception sources and 5ft sound wave reception sources on acoustic emission source on the sonic system, the sonic system, it is characterized in that: monopole transmitters is adopted in the acoustic emission source, simultaneously at one pole receiving transducer that detects quick bottom of 1ft location arrangements, during well logging this one pole receiving transducer earthward digital control system transmit the first wave amplitude of this position and time then, be used for monitoring and whether run into rapid stratum; In 2ft spacing position, arrange 10 sector receiving transducers.
2. sector cement bond logging instrument according to claim 1 is characterized in that: sampling multilayer acoustic impedance material is decayed to direct wave between sound source and 1ft.
3. sector cement bond logging instrument according to claim 1, it is characterized in that: this sector transducer comprises piezoelectric ceramic tube and electrode, be evenly distributed with vertically 8～30 electrodes in the piezoelectric ceramic tube side, the sector receiving plane between each electrode, so that the investigative range of each sector is approximately 90o～24o.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220188695 CN202690038U (en) | 2012-04-28 | 2012-04-28 | Sector cementing well measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220188695 CN202690038U (en) | 2012-04-28 | 2012-04-28 | Sector cementing well measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202690038U true CN202690038U (en) | 2013-01-23 |
Family
ID=47545668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220188695 Withdrawn - After Issue CN202690038U (en) | 2012-04-28 | 2012-04-28 | Sector cementing well measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202690038U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635350A (en) * | 2012-04-28 | 2012-08-15 | 中国电子科技集团公司第二十二研究所 | Sector cement bond logging instrument |
| CN116201526A (en) * | 2023-05-05 | 2023-06-02 | 中海油田服务股份有限公司 | Micro annular gap detection method, micro annular gap detection device, computing equipment and storage medium |
-
2012
- 2012-04-28 CN CN 201220188695 patent/CN202690038U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635350A (en) * | 2012-04-28 | 2012-08-15 | 中国电子科技集团公司第二十二研究所 | Sector cement bond logging instrument |
| CN102635350B (en) * | 2012-04-28 | 2014-09-17 | 中国电子科技集团公司第二十二研究所 | Sector cement bond logging instrument |
| CN116201526A (en) * | 2023-05-05 | 2023-06-02 | 中海油田服务股份有限公司 | Micro annular gap detection method, micro annular gap detection device, computing equipment and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130123 Effective date of abandoning: 20140917 |
|
| RGAV | Abandon patent right to avoid regrant |