Borehole deblocking device for ultrasonic logging
An ultrasonic and logging technology, used in wellbore/well components, measurement, earthmoving, etc., can solve problems such as cable breakage, logging instruments stuck in the well, logging instruments falling into the well, etc.
Active Publication Date: 2019-11-15
BEIJING DADE GUANGYUAN PETROLEUM TECH SERVICE
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Problems solved by technology
[0002] Ultrasonic logging is to use the traction mechanism to send the logging instrument connected with the traction mechanism into the well for ultrasonic detection. When the exploration is completed, the logging instrument needs to be lifted from the well to the bottom. There will be a situation where the logging instrument is stuck in the well. If the traction force of the traction mechanism is too large, the cable will be broken, the logging instrument will fall into the well, and only more complicated fishing work can be carried out.
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[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, so that those skilled in the art can implement it with reference to the description.
[0021] Such as Figure 1~3 As shown, a downhole jam-releasing device for ultrasonic logging, including:
[0022] The sleeve 2 is sheathed on the outer wall of the logging tool 1, the top of the sleeve 2 is connected to the traction mechanism, the side wall of the sleeve 2 is hollow inside, and a pair of first oppositely arranged first bars are provided on the outer wall of the sleeve 2 A through-hole and a pair of second strip-shaped through-holes oppositely arranged, a pair of first strip-shaped through-holes and a pair of second strip-shaped through-holes are all vertically opened and distributed symmetrically along the axis of the sleeve 2;
[0023] A pair of first electric telescopic rods 21, which are horizontally installed in the side wall of the sleeve...
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The invention discloses a borehole deblocking device for ultrasonic logging. The borehole unfreezing device comprises a sleeve sleeving a logging instrument, the top end of the sleeve is connected with a traction mechanism, the inner part of the side wall of the sleeve is hollow, and two groups of strip through holes are formed in the outside wall of the sleeve; the side wall of the sleeve is internally provided with a first electric telescopic rod and an E-shaped support rod; the end part of the E-shaped support rod is rotatably connected with I-shaped wheels, and a long tooth is arranged atthe edge of the rotary table of each I-shaped wheel; and the side wall of the sleeve is further internally provided with a second electric telescopic rod, the movable end of the second electric telescopic rod is connected with a baffle, a strip-shaped spring piece is arranged between the baffle and the top end of the sleeve, and the sleeve is internally provided with a power supply. According to the borehole unfreezing device, when ultrasonic logging is conducted, under the condition of the logging instrument in boreholes is blocked, by squeezing the spring piece and by using the mode of the long tooth contacting well walls and reacting on the logging instrument, the blocked problem can be effectively solved, operation is convenient and fast, the situation that a cable is pulled and turnedto the subsequent fishing work can be effectively avoided.
Description
technical field [0001] The invention relates to the field of downhole jam-releasing devices for ultrasonic well logging, in particular to a downhole jam-releasing device for ultrasonic well logging. Background technique [0002] Ultrasonic logging is to use the traction mechanism to send the logging instrument connected with the traction mechanism into the well for ultrasonic detection. When the exploration is completed, the logging instrument needs to be lifted from the well to the bottom. The logging instrument may be stuck in the well. If the traction force of the traction mechanism is too large, the cable will be broken, the logging instrument will fall into the well, and only more complicated fishing work can be carried out. Therefore, there is a need for a device that can effectively prevent the logging instrument from being stuck in the well during ultrasonic logging. Contents of the invention [0003] It is an object of the present invention to solve at least the ...
Claims
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IPC IPC(8): E21B31/00E21B47/00
CPCE21B31/00E21B47/00
Inventor 刘亚东孙晓东王良超陈琰
Owner BEIJING DADE GUANGYUAN PETROLEUM TECH SERVICE