CN1702295A - Cementing acoustic imaging logging instrument - Google Patents
Cementing acoustic imaging logging instrument Download PDFInfo
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- CN1702295A CN1702295A CN 200510043798 CN200510043798A CN1702295A CN 1702295 A CN1702295 A CN 1702295A CN 200510043798 CN200510043798 CN 200510043798 CN 200510043798 A CN200510043798 A CN 200510043798A CN 1702295 A CN1702295 A CN 1702295A
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- transducer
- logging instrument
- cementing
- acoustic imaging
- imaging logging
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Abstract
This invention relates to a mining field logging instrument, particular to a cement acoustic image logger, which comprises a main body including pusher, variable density short sub and electronic circuit, wherein the pusher has more than three pushing arms which are equipped with transmitting transducer and receiving transducer, and the pushing arms divide the whole circle well of 360 deg. to six equal sectors of 60 deg. The transducer appresses the inner wall of the pipe sleeve and applies decrement measurement, so the measurement will not be affected by the big specific density liquid, aeration fluid, and eccentricity of the pipe sleeve; besides, the locations of ultrasonic transmitting transducer and receiving transducer have a certain matrix relation, and the signal transmitting time is controlled by logic.
Description
One, technical field: the present invention relates to a kind of oil reservoir logging instrument, particularly a kind of cementing acoustic imaging logging instrument that utilizes ultrasonic wave compensate for emission technology and cementing acoustic imaging attenuation measuring technique to measure Cementation Quality.
Two, background technology: in the middle and later periods of field produces exploitation, the primary cement evaluation well logging is the important logging technique in oil field, play a key effect to solving problems such as oil well profit channelling, use acoustic amplitude log tools and variable density log instrument to check the quality of cementing quality at present.Yet acoustic amplitude logging can only solve the glued situation at interface between sleeve pipe and the cement; Variable density log is the measurement sound width of cloth not only, but also record variable density figure VDL, the power of identification VDL formation wave is estimated the glued situation between cement and the stratum.But these two kinds of instruments all are subjected to the influence of factors such as little annular space, rapid stratum, mud property variation, its emission, receive all omnidirectionally, and the information of acoustic wave of measurement is cased well 360 degree averaged result.Make measurement result be difficult to distinguish the cement of sleeve pipe low compressive strength on every side like this, and around the sleeve pipe cementing good, but around the crack both of these case of a fritter when high pressure arranged, and can not discern the size of groove, data interpretation has multi-solution, in addition, need before surveying at free sleeve pipe place scale, need keep instrument placed in the middle in sleeve pipe during measurement, this is greatly limited on using.
Three, summary of the invention: purpose of the present invention is exactly the above-mentioned defective that exists at prior art, and a kind of cementing acoustic imaging logging instrument of accurate evaluating cementing quality is provided.
Its technical scheme is: have an apparatus subject, comprise telescoping ram, variable density pipe nipple and electronic circuit; Described telescoping ram is equipped with transmitting transducer and receiving transducer by 3 above backup arms on the described backup arm.
Preferable technical scheme is described telescoping ram by six around mode 360 ° of whole well weeks are divided into 6 the 60 ° backup arms that wait the sector distribution.
Effect of the present invention is: because transducer is close to internal surface of sleeve pipe, this measurement is not subjected to weighted mud in the sleeve pipe, well to include the influence of air-flow body and sleeve pipe off-centre substantially, and these factors are measured common cementing and the influence of pulse echo measurement all is very large; In addition, the geometry arrangement of transducer is most important to the result who measures, and the ultrasound transmitting transducer on the pole plate and the installation site of receiving transducer are to have certain matrix relationship, and signal transmission time is subjected to logic control.
Four, description of drawings:
Accompanying drawing 1 is apparatus structure figure of the present invention;
Accompanying drawing 2 is that probe pole plate array of the present invention launches schematic diagram.
Five, the specific embodiment:
In conjunction with the accompanying drawings, the invention will be further described:
According to Fig. 1, all transducers all are installed on six backup arms 3, and pole plate is close to internal surface of sleeve pipe when well logging, compensate the decay well logging.
The various power supplys that electronic circuit control section 1 among Fig. 1 provides instrument work to use are handled signal according to the attenuation measurement principle, and calculate the damped expoential of each covering of the fan subregion, estimate the outer Cementation Quality of sleeve pipe of this subregion; And under logical order control, circulate and transmit and receive, three positions are relatively by three last receiving transducers 8, select by an analog switch, carry out filtering and buffering through high-pass filter again, dash receiver is 100 from being input to the total gain of output.Three positions relatively by under three receiving transducers 8, Signal Processing and three top transducers are basic identical, output signal outputs to MUX equally.MUX two accelerometer signal X of output and Y, and be used for when carrying out scale the input shorted to earth of selector.A low pass filter comes the output signal of accelerometer is carried out the integration shaping, and the time is approximately 0.1 second.Two address decoders are selected transducer by SEL0, SEL1 and SEL2 are deciphered.A slice is used for " now " transducer, and another sheet is used for " delay " transducer.It is effective in the 5us that the output of decoder can keep, so that emission under the control of " now " and " delay " pulse that the VDL drive plate transmits.
According to Fig. 2, cementing acoustic imaging logging instrument is with the integrality around mode cementing outside comprising six angle block quantitative measurment sleeve pipes of wellbore.The arrangement architecture of its transducer has two characteristics: the one, and adopt the compensation sonic system and the source square of making to be equivalent to following 3 wavelength of operating frequency at least for best, can obtain the precise results of acoustic measurement; The 2nd, the operating frequency of transducer keeps managing the high sensitivity of outer condition.The operating frequency of selecting transducer for use is that 100kHz just can satisfy above-mentioned two requirements when above.At the cover external diameter of pipe when being 5 inches, transmitting transducer 7 approximately all is 152 millimeters to the distance between receiving transducer 8 and two receivers between each pole plate.
In addition, the each several part function is as follows:
Pole plate probe telescoping ram is the key component of apparatus measures, movable sealing structure is wherein arranged, motor control mechanism etc.Telescoping ram can normally be worked under the environment of down-hole HTHP, pole plate is opened be labelled to the borehole wall, can successfully regain after well logging finishes.
Have seven different have mixing, balances to import in the instrument receiving circuit, gain is 20 times of preamplifiers.The coupling capacitance of output and resistance are formed the high-pass filter that cut-off frequency is 15KHz.Two accelerometer signal X of MUX output and Y are used for when carrying out scale the input shorted to earth of selector.Logical signal on the common signal plate enters into receiving circuit through two registers.Each clock pulses is all read in input signal through shift register.After 16 bit data are read in, latch line and just send a latch signal, when ultrasonic emitting and accelerometer signal are read to finish, repeat whole data handling procedure at every turn.
Transducer driving circuit comprises 12 identical high-precision drive circuits and drives each transducer on 6 pole plates.300V in the circuit is for the charging capacitor of giving transducer charges, because part is routed in the mud, the length of lead can be different.Each FET IRF740 is driven by IRFD120 by coupling transformer.
The Electric Machine Control plate is made up of two virtually completely identical circuit.Handle the control motor " OPEN " that receives and the logical signal of " CLOSE " state respectively.The work of 3 FET motors is arranged in each circuit.For preventing maloperation, also include the logic of supplementarity circuit in the circuit and become high level simultaneously to prevent motor control signal M0 and M1.
In order to obtain best measurement effect, instrument has adopted attenuation measuring technique, and last measurement result not only depends on the sensitivity of single transducer, simultaneously also can the compensating jacket air spots to the influence of measurement result.The geometry arrangement of transducer is most important to the result who measures like this, and the ultrasound transmitting transducer 7 on the pole plate and the installation site of receiving transducer 8 are to have certain matrix relationship, and signal transmission time is subjected to logic control.
Claims (3)
1, a kind of cementing acoustic imaging logging instrument, comprise telescoping ram, variable density pipe nipple (5) and electronic circuit control section, it is characterized in that: described telescoping ram is equipped with transmitting transducer (7) and receiving transducer (8) by three above backup arms (3) on the described backup arm (3).
2, cementing acoustic imaging logging instrument according to claim 1 is characterized in that: described telescoping ram by six to wait the backup arm (3) of sector distribution to form being divided into 6 60 ° 360 ° of whole well weeks around mode.
3, cementing acoustic imaging logging instrument according to claim 2 is characterized in that: the installation site of transmitting transducer on the described telescoping ram (7) and receiving transducer (8) is to arrange according to matrix relationship.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510043798 CN1702295A (en) | 2005-06-17 | 2005-06-17 | Cementing acoustic imaging logging instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510043798 CN1702295A (en) | 2005-06-17 | 2005-06-17 | Cementing acoustic imaging logging instrument |
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| CN1702295A true CN1702295A (en) | 2005-11-30 |
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| CN 200510043798 Pending CN1702295A (en) | 2005-06-17 | 2005-06-17 | Cementing acoustic imaging logging instrument |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128029A (en) * | 2010-01-12 | 2011-07-20 | 同济大学 | Double-interface ultrasonic detection imaging method for cased well |
| CN102383786A (en) * | 2010-08-30 | 2012-03-21 | 中国石油化工集团公司 | Sector cement bonding and sound wave time difference logging instrument |
| CN103939092A (en) * | 2014-04-25 | 2014-07-23 | 中国科学院声学研究所 | Vibration isolation device |
| CN105673008A (en) * | 2016-02-29 | 2016-06-15 | 中国海洋石油总公司 | High-coverage-rate multi-arm sidewall contact device for slim hole |
| CN109790748A (en) * | 2016-08-30 | 2019-05-21 | 埃克森美孚上游研究公司 | Dual transducers communication node for underground acoustics wireless network and the method using the communication node |
| CN111502645A (en) * | 2019-01-30 | 2020-08-07 | 中石化石油工程技术服务有限公司 | Push-leaning type acoustic logging receiving probe |
| CN113093285A (en) * | 2020-06-22 | 2021-07-09 | 中国石油化工集团有限公司 | Multi-frequency multi-mode acoustic logging instrument and using method thereof |
| CN113464118A (en) * | 2021-08-10 | 2021-10-01 | 中海油田服务股份有限公司 | Down-thrust sidewall contact device and method for acoustic logging instrument |
| CN114233222A (en) * | 2020-11-26 | 2022-03-25 | 西安振宇电子工程有限公司 | Six-arm sidewall contact device suitable for small-diameter oil well |
| CN115711119A (en) * | 2022-11-22 | 2023-02-24 | 中国石油大学(华东) | Experimental method for monitoring cement channeling in real time by using wall-attached acoustic system |
-
2005
- 2005-06-17 CN CN 200510043798 patent/CN1702295A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128029A (en) * | 2010-01-12 | 2011-07-20 | 同济大学 | Double-interface ultrasonic detection imaging method for cased well |
| CN102128029B (en) * | 2010-01-12 | 2013-06-26 | 同济大学 | Double-interface ultrasonic detection imaging method for cased well |
| CN102383786A (en) * | 2010-08-30 | 2012-03-21 | 中国石油化工集团公司 | Sector cement bonding and sound wave time difference logging instrument |
| CN103939092A (en) * | 2014-04-25 | 2014-07-23 | 中国科学院声学研究所 | Vibration isolation device |
| CN105673008A (en) * | 2016-02-29 | 2016-06-15 | 中国海洋石油总公司 | High-coverage-rate multi-arm sidewall contact device for slim hole |
| CN105673008B (en) * | 2016-02-29 | 2019-11-26 | 中国海洋石油集团有限公司 | A kind of slim-hole high coverage rate multi-arm telescoping ram |
| CN109790748A (en) * | 2016-08-30 | 2019-05-21 | 埃克森美孚上游研究公司 | Dual transducers communication node for underground acoustics wireless network and the method using the communication node |
| CN111502645A (en) * | 2019-01-30 | 2020-08-07 | 中石化石油工程技术服务有限公司 | Push-leaning type acoustic logging receiving probe |
| CN113093285A (en) * | 2020-06-22 | 2021-07-09 | 中国石油化工集团有限公司 | Multi-frequency multi-mode acoustic logging instrument and using method thereof |
| CN114233222A (en) * | 2020-11-26 | 2022-03-25 | 西安振宇电子工程有限公司 | Six-arm sidewall contact device suitable for small-diameter oil well |
| CN113464118A (en) * | 2021-08-10 | 2021-10-01 | 中海油田服务股份有限公司 | Down-thrust sidewall contact device and method for acoustic logging instrument |
| CN115711119A (en) * | 2022-11-22 | 2023-02-24 | 中国石油大学(华东) | Experimental method for monitoring cement channeling in real time by using wall-attached acoustic system |
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