Method of Accurately Measuring Depth in Through-Bit Logging
A logging and depth technology, used in surveying, earthmoving, wellbore/well components, etc., can solve the problems of low measurement efficiency and accuracy, many depth measurement parameters, and complicated procedures, and achieve accurate results and simple operation. , the effect of high measurement efficiency
Active Publication Date: 2015-10-28
吉辰智能设备集团有限公司
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[0005] The purpose of the present invention is to propose an electromagnetic wave transmission method for well logging instrument information, a method for accurately measuring depth in drilling, logging, and drilling, logging, and drilling. The problem of low efficiency and accuracy
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[0015] The technical solutions of the present invention are further described below with reference to the accompanying drawings and through specific embodiments.
[0016] The method of accurately measuring depth in through-bit logging. During the logging operation, the actions of lowering the drill pipe are as follows: elevator to release the drill pipe, lift the drill pipe and pull it to the wellhead drill pipe, buckle the hydraulic tong, and lower the drill. Rod, put slip, release elevator and finally lift the elevator, install speed sensor on the hydraulic tong and elevator to monitor the vibration of the two tools, when the vibration suddenly changes, the elevator hugs the drill pipe and buckles up , after the hydraulic tongs are buckled, the hook displacement is calculated until the elevator is released, and this distance is the depth of the downhole.
[0017] like figure 1 , figure 2 As shown, h is the gap between the two small strands of the large rope. Two optical ...
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The invention relates to a method for accurately measuring depth in through bit logging. During logging, a drill pipe is sequentially run by the following steps of running the drill pipe by an elevator, lifting and pulling the drill pipe to the drill pipe position at a wellhead, making up by a pair of hydraulic tongs, running the drill pipe, setting a slip, releasing the elevator, and finally lifting the elevator. The hydraulic tongs and the elevator are respectively provided with a sensor, and the sensors are used for monitoring the shakes of the hydraulic tongs and the elevator. When the shakes suddenly change, the elevator clamps the drill pipe and then makes up the drill pipe, the displacement of a large hook is calculated after the elevator completes making up until the elevator is released, and the distance is the logging depth. Grains of a logging large rope are detected by an optical pulse transmitter and an optical pulse receiver, a subsequently measured optical signal is converted into a pulse signal, the obtained pulse codes are identified, then the displacement value of the large hook in the process from the making-up of the hydraulic tongs to the releasing of the elevator is obtained, and further the displacement value of the logging depth is obtained. The method has the advantages that the operation is simple, the measuring efficiency is high, and the results are more accurate.
Description
technical field [0001] The invention relates to the technical field of well logging, in particular to a method for accurately measuring depth in over-bit logging. Background technique [0002] With the continuous development of logging technology, new methods and new instruments have been gradually popularized and applied. In recent years, over-drilling logging technology has matured, and over-drilling logging technology has basically replaced ordinary logging and logging while drilling, and has become a common technical means for logging operations. [0003] In the process of drilling, logging, and logging through the bit, accurate depth measurement is required. Without accurate depth, the measurement of downhole instruments has little meaning. The traditional depth measurement needs to measure the depth by measuring the diameter of the large rope, the number of turns of the large rope on the drum, the diameter of the drum, and the position of the layer where the large rop...
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IPC IPC(8): E21B47/04
Inventor 黄文帜高怀雪苏航
Owner 吉辰智能设备集团有限公司