CN201090208Y - Well logger for independent arm hole diameter imaging - Google Patents
Well logger for independent arm hole diameter imaging Download PDFInfo
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- CN201090208Y CN201090208Y CNU2007201948399U CN200720194839U CN201090208Y CN 201090208 Y CN201090208 Y CN 201090208Y CN U2007201948399 U CNU2007201948399 U CN U2007201948399U CN 200720194839 U CN200720194839 U CN 200720194839U CN 201090208 Y CN201090208 Y CN 201090208Y
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- measuring
- well
- differential displacement
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Abstract
Disclosed is an independent arm well diameter imaging well logger, which mainly solves problems of low precision, bad stability and a few given log curves of the current contact type well diameter imaging well logger. The utility model is characterized in that: a differential displacement transformer is adopted as a displacement sensor, each measuring arm (17) is combined with a transmission leg (14), a spring II (15), a spring I (12), a measuring magnetic needle (11), a probe core (10) and the differential displacement transformer to act as a measuring unit, and a plurality of similar measuring units are fixed in a protecting tube (16) by fixed rings, and the pressure signal output end of the differential displacement transformer is connected to the electric signal input end of a circuit tube (3). The well logger has advantages of high measuring precision and good stability, and adopts a plurality of independent measuring arms to measure the inside diameter of the oil well casing, thereby acquiring a plurality of well diameter curves and getting rather accurate well-logging interpreting results. In addition, the utility model has a compact structure and is convenient for maintenance and measuring the casing with smaller diameter.
Description
Technical field:
The utility model relates to a kind of well logging apparatus, specifically relates to a kind of mechanical logging device of contact.
Background technology:
At present, domestic and international existing hole diameter imaging logging instrument mainly is two kinds of contactless and contacts.Contactless logger class, a kind of is the electromagnetic test logging instrument that utilizes electromagnetic principle, its advantage is that the instrument external diameter is little, can effectively reduce Effect of Environmental; Shortcoming is difficulty of data interpretation.Another kind is that to utilize the borehole acoustic television logger advantage of ultrasonic wave principle be intuitive measurement results, and shortcoming is that measurement result is subjected to such environmental effects big.Contact calliper log instrument series products, common advantage are to reduce the influence of test environment to measurement result to greatest extent, and data interpretation is easy, and result map is directly perceived.But existing contact class caliper logging instrument all adopts the pull bar potentiometer as displacement transducer, and precision is relatively poor, and stability is not high.Its CAL that can provide seldom is unfavorable for obtaining accurate result of log interpretation very much in addition.The for example domestic little caliper logging instrument that early occurs only can provide a CAL, and XYC can provide two CALs, and eightfeeler casing caliper can provide four CALs.
The utility model content:
Existing contact hole diameter imaging logging instrument precision is low in order to solve, poor stability and the less problem of log that provides, the utility model provides a kind of independent arm hole diameter imaging logging instrument, this kind independent arm hole diameter imaging logging instrument adopts the differential displacement transformer to improve certainty of measurement and stability as displacement transducer, and adopt a plurality of independently gage beams to measure the inside radius of oil well casing, can obtain many CALs, have the advantages that to obtain accurate result of log interpretation.
The technical solution of the utility model is: this kind independent arm hole diameter imaging logging instrument, comprise the instrument head, last centralizer, circuit tube, sensor unit, measure drive assembly, following centralizer and tail cap, these overall structures and existing contact caliper logging instrument are basic identical, but have following improvement: described sensor unit is by the probe overcoat that connects in turn, seal nipple, the probe core, measure needle, spring I and on all planes, evenly distribute and a plurality of differential displacement transformers of being installed in the seal nipple on the probe core are formed, wherein said differential displacement transformer uses as displacement transducer, per two differential displacement transformer bay angle equalizations, each is measured on the needle sealing "O is installed.Described measurement drive assembly is by retainer ring, the transmission leg, spring II, casing, gage beam, the measurement arm seat is formed, wherein casing connects mutually with seal nipple in the sensor unit, form toroidal cavity between the two, described retainer ring is fixed in the bottom of seal nipple in this cavity, two sections were compressed by spring I and spring II respectively after described transmission leg passed this retainer ring, its bottom claw places in the arc groove of gage beam, the top then is connected with the measurement needle, can drive the measurement needle vertically moves, the stem of each gage beam all is fixed in a rotation-coupled point of measuring on the arm seat, its afterbody is L-shaped, leans out the casing outer wall.Above-mentioned each gage beam and transmission leg, spring II, spring I, a measurement needle, a probe core and a differential displacement transformer constitute a measuring unit, the pressure signal output of this differential displacement transformer are connected to the electric signal input end of circuit tube.
The utlity model has following beneficial effect: this programme has at first improved the displacement transducer that uses in the prior art, has promptly replaced original rod-pulling type potentiometer with the differential displacement transformer, thereby has improved certainty of measurement and stability.In addition, this programme provides a cover brand-new power transmission machinery, adopt a plurality of independently gage beams to measure the internal diameter of oil well casing, make this logging instrument not only can realize the output of many logs, and have compact mechanical structure, reliable transmission, external diameter characteristics little and easy to maintenance.
Description of drawings:
Fig. 1 is a composition schematic diagram of the present utility model.
Fig. 2 is a sensor unit and the structure sectional view of measuring after drive assembly is connected in the utility model.
1-instrument head among the figure, the last centralizer of 2-, 3-circuit tube, 4-sensor unit, 5-measures drive assembly, centralizer under the 6-, 7-tail cap, the 8-overcoat of popping one's head in, 9-seal nipple, the 10-core of popping one's head in, 11-measures needle, 12-spring I, 13-retainer ring, 14-transmission leg, 15-spring, 16-casing, the 17-gage beam, 18-measures arm seat, 19-ratio well logging wall.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, this kind independent arm hole diameter imaging logging instrument, comprise instrument head 1, last centralizer 2, circuit tube 3, sensor unit 4, measure drive assembly 5, following centralizer 6 and tail cap 7, these overall structures and existing contact caliper logging instrument are basic identical, no longer be further described, specify two main improvements below:
First improvement is the improvement to displacement transducer.As shown in Figure 2, sensor unit 4 by the probe overcoat 8 that connects in turn, seal nipple 9, probe core 10, measure needle 11, spring I and on all planes, evenly distribute and a plurality of differential displacement transformers of being installed on the core 10 of popping one's head in seal nipple 9 in are formed, wherein said differential displacement transformer uses as displacement transducer, per two differential displacement transformer bay angle equalizations.Each is measured on the needle 11 the sealing "O is installed, and its role is to isolated high-voltage and protects sensor not to be subjected to the corrosion of liquid in the well.
Second improvement be described measurement drive assembly 5 by retainer ring 13, transmission leg 14, spring II, casing 16, gage beam 17, measure arm seat 18 and form, wherein casing 16 connects mutually with seal nipple 9 in the sensor unit 4, forms toroidal cavity between the two.Described retainer ring 13 is fixed in the bottom of seal nipple 9 in this cavity, described transmission leg 14 passes these retainer ring 13 back two sections and is compressed by spring I and spring II respectively, its bottom claw places in the arc groove of gage beam 17, the top then is connected with measurement needle 11, can drive measurement needle 11 vertically moves, the stem of each gage beam 17 all is fixed in a rotation-coupled point of measuring on the arm seat 18, its afterbody is L-shaped, lean out casing 16 outer walls, so just can support that gage beam 17 can be close on the internal surface of sleeve pipe by the strength of spring.
Above-mentioned each gage beam 17 and a transmission leg 14, spring II, spring I, measure needle 11 for one, a probe core 10 and a differential displacement transformer constitute a measuring unit, the pressure signal output of this differential displacement transformer is connected to the electric signal input end of circuit tube 3, because each gage beam all drives a probe core 10, thereby the radial variations of gage beam is changed into the variation of sensor output voltage, the variation that is about to casing inner diameter is converted to the radial displacement of apparatus measures arm, mechanical conveyance system by instrument internal, the radial displacement of gage beam is converted to the vertical displacement of transmission leg, by displacement transducer the vertical displacement of transmission leg is changed again and convert the signal of telecommunication to, the differential displacement transformer that uses is a kind of contactless electromechanical transducer spare as displacement transducer, and the amplitude of the output signal of telecommunication is directly proportional with the displacement of armature.
This programme frame for movement is reasonable in design, and external diameter is little, is not less than the sleeve pipe of 74mm for the deformation point internal diameter, can be out of shape it, bending and preforation tunnel detect.In addition, its compact conformation, easy to maintenance, precision is high, good reliability, it is many to measure curve, data interpretation is convenient, can provide intuitively, three-dimensional hole diameter figure.
Claims (1)
1. an independent arm hole diameter imaging logging instrument comprises instrument head (1), last centralizer (2), circuit tube (3), sensor unit (4), measures drive assembly (5), following centralizer (6) and tail cap (7), it is characterized in that:
Described sensor unit (4) by the probe overcoat (8) that connects in turn, seal nipple (9), probe core (10), measure needle (11), spring I (12) and on all planes, evenly distribute and a plurality of differential displacement transformers of being installed on the core (10) of popping one's head in seal nipple (9) in are formed, wherein said differential displacement transformer uses as displacement transducer, per two differential displacement transformer bay angle equalizations, each is measured sealing " 0 " shape ring is installed on the needle (11);
Described measurement drive assembly (5) is by retainer ring (13), transmission leg (14), spring II (15), casing (16), gage beam (17), measuring arm seat (18) forms, wherein casing (16) connects mutually with seal nipple (9) in the sensor unit (4), form toroidal cavity between the two, described retainer ring (13) is fixed in the bottom of seal nipple (9) in this cavity, described transmission leg (14) passes this retainer ring (13) back two sections and is compressed by spring I (12) and spring II (15) respectively, its bottom claw places in the arc groove of gage beam (17), the top then is connected with measurement needle (11), can drive measurement needle (11) vertically moves, the stem of each gage beam (17) all is fixed in a rotation-coupled point of measuring on the arm seat (18), its afterbody is L-shaped, leans out casing (16) outer wall;
Above-mentioned each gage beam (17) constitutes a measuring unit with a transmission leg (14), spring II (15), spring I (12), a measurement needle (11), a probe core (10) and a differential displacement transformer, the pressure signal output of this differential displacement transformer is connected to the electric signal input end of circuit tube (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201948399U CN201090208Y (en) | 2007-10-26 | 2007-10-26 | Well logger for independent arm hole diameter imaging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201948399U CN201090208Y (en) | 2007-10-26 | 2007-10-26 | Well logger for independent arm hole diameter imaging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201090208Y true CN201090208Y (en) | 2008-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201948399U Expired - Fee Related CN201090208Y (en) | 2007-10-26 | 2007-10-26 | Well logger for independent arm hole diameter imaging |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201090208Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104975846A (en) * | 2015-07-21 | 2015-10-14 | 胡显三 | Hole diameter logging device |
| CN107905751A (en) * | 2017-12-14 | 2018-04-13 | 中国地震局地壳应力研究所 | A kind of down-hole mechanical couples positioner |
| CN110318739A (en) * | 2019-07-29 | 2019-10-11 | 长安大学 | A kind of explosion-proof type borehole wall diameter measuring device |
| US10883325B2 (en) | 2017-06-20 | 2021-01-05 | Sondex Wireline Limited | Arm deployment system and method |
| US10907467B2 (en) | 2017-06-20 | 2021-02-02 | Sondex Wireline Limited | Sensor deployment using a movable arm system and method |
| US10920572B2 (en) | 2017-06-20 | 2021-02-16 | Sondex Wireline Limited | Sensor deployment system and method using a movable arm with a telescoping section |
| US11021947B2 (en) | 2017-06-20 | 2021-06-01 | Sondex Wireline Limited | Sensor bracket positioned on a movable arm system and method |
| CN113108683A (en) * | 2021-04-16 | 2021-07-13 | 湖北省城市地质工程院 | Automatic imaging measurement method and device for three-dimensional depiction of large-caliber well body structure |
-
2007
- 2007-10-26 CN CNU2007201948399U patent/CN201090208Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104975846A (en) * | 2015-07-21 | 2015-10-14 | 胡显三 | Hole diameter logging device |
| US10883325B2 (en) | 2017-06-20 | 2021-01-05 | Sondex Wireline Limited | Arm deployment system and method |
| US10907467B2 (en) | 2017-06-20 | 2021-02-02 | Sondex Wireline Limited | Sensor deployment using a movable arm system and method |
| US10920572B2 (en) | 2017-06-20 | 2021-02-16 | Sondex Wireline Limited | Sensor deployment system and method using a movable arm with a telescoping section |
| US11021947B2 (en) | 2017-06-20 | 2021-06-01 | Sondex Wireline Limited | Sensor bracket positioned on a movable arm system and method |
| CN107905751A (en) * | 2017-12-14 | 2018-04-13 | 中国地震局地壳应力研究所 | A kind of down-hole mechanical couples positioner |
| CN107905751B (en) * | 2017-12-14 | 2023-09-15 | 应急管理部国家自然灾害防治研究院 | Underground mechanical coupling positioning device |
| CN110318739A (en) * | 2019-07-29 | 2019-10-11 | 长安大学 | A kind of explosion-proof type borehole wall diameter measuring device |
| CN113108683A (en) * | 2021-04-16 | 2021-07-13 | 湖北省城市地质工程院 | Automatic imaging measurement method and device for three-dimensional depiction of large-caliber well body structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080723 Termination date: 20161026 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |