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Ultrasound phased array cased well and front sounding integration detecting method

An ultrasonic phased array and integrated detection technology, which is applied in measurement, earthwork drilling, wellbore/well components, etc., can solve the problems of poor accuracy of impression technology, poor detection effect, and low resolution, and achieve the goal of overcoming precision poor effect

Inactive Publication Date: 2009-02-11
LIAOHE GASOLINEEUM EXPLORATION BUREAU
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Problems solved by technology

[0003] The purpose of the present invention is to provide an ultrasonic phased array casing casing and front inspection integrated detection method, which solves the single downhole casing measurement technology in the prior art, the transducer in the casing acoustic imager It is fixed on a rotating shaft, and the detection effect is poor when the borehole diameter changes; the instrument structure is complex and the resolution is low; the accuracy of the impression technique is poor

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  • Ultrasound phased array cased well and front sounding integration detecting method

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Embodiment Construction

[0011] exist figure 1 Among them, the integrated detection method of ultrasonic phased array casing wellbore and front visitation is to realize the integration of oil well circumference scan and downhole front visitation measurement technology through the cylindrical phased array scan ultrasonic transducer, and complete the borehole survey at the same time. The transducers for the peripheral wall scanning imaging and the front visit imaging measurement consist of the well scan phase control probe 1, the front visit phase control probe 2, the axial focused sound beam 3, the lower focused sound beam 4, the transducer unit 7, the segmented medium 8, Reflected acoustic beam 9, signal excitation control module 10, phase control delay control module 11, phase control delay superimposition and processing module 12, A / D sampling module 13: the integrated detection method can be used to simultaneously measure oil well (or casing ) 360-degree ultrasonic phased array scanning imaging of ...

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Abstract

The present invention relates to an ultrasonic phased array sleeve well circle and front spy integral inspection method used for measuring an oil well underground sleeve which is realized by a columnar phased array well circle scanning ultrasonic transducer. The transducer consists of a well circle scanning phase control probe, a front spy phase control probe, a surrounding focusing acoustic beam, a lower focusing acoustic beam, a transducer unit, a cutting medium, a reflection acoustic beam, a signal exciting control module, a phase control delay control module, a phase control delay piling and disposing module and an A / D sampling module. The method integrates the phased array well circle scanning ultrasonic transducer with a lower front well spy measuring technology to finish the surrounding well scanning imaging and front spy imaging inspection in a well hole at the same time. The method solves the problems in the prior art that the single underground sleeve measurement is processed, the transducer is fixed at rotation, the prior art has bad detection effect, low resolution factor and bad impression precision when well diameter changes. The present invention can be widely applied to the oil well underground sleeve measurement operation.

Description

Technical field: [0001] The invention relates to an ultrasonic phased array casing casing well circumference and front inspection integrated detection method for oil well casing measurement. Background technique: [0002] In the application and research of ultrasonic phased array technology in downhole, Maki proposed the detection method of annular phased array as early as 1991 on SPWLA, after which there appeared some theoretical and experimental researches on annular phased array technology, although this The annular phased array transducer has superior longitudinal focusing characteristics, but the sound beam cannot be deflected. Moreover, this transducer must be mechanically rotated around the axis in order to realize scanning imaging around the well wall. At present, there are only some theoretical and experimental research reports on the application of the phased array structure in the downhole, and it has not been applied to the oil field logging; Peripheral scanning...

Claims

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Application Information

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IPC IPC(8): E21B47/00G01V1/44E21B47/002
Inventor 高歌军管恩东张碧星王东徐宏权宫俊杰孙绍春朱文张勇张月何建忠王敏卓李洪旭沈艳丽董玲
Owner LIAOHE GASOLINEEUM EXPLORATION BUREAU
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