Time-depth acquisition method and device based on drill string transport logging instrument
A logging instrument and drill string technology, which is applied in the field of time-depth acquisition of logging instruments based on drill string transportation, can solve problems such as misjudgment of drill string operating intervals, inaccurate calculation of logging instrument positions, etc., and solve inaccurate calculations Effect
Active Publication Date: 2019-01-08
THE 22ND RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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[0005] Embodiments of the present invention provide a time-depth acquisition method and device based on drill string conveying logging instruments, so as to at least solve the problem of misjudgment of the drill string operating interval caused by predictable and unpredictable interference in the logging process. Calculation inaccurate technical issues
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[0023] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.
[0024] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate ...
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The invention discloses a time-depth acquisition method and device for conveying drill strings to a logging instrument.The method comprises following steps: obtaining the range used for recording drill string motion and operation time windows corresponding to lifting hook heights during a logging process from pre-stored operation time window documents; obtaining start time and stop time of each drill string motion from the operation time windows; obtaining lifting hook heights corresponding to start time and lifting hook heights corresponding to stop time; calculating measuring lengths of each drill string based on lifting hook heights corresponding to start time and lifting hook heights corresponding to stop time; and calculating based on measuring lengths of all drill strings and lifting hook heights of motion ranges recorded by the operation time windows to obtain positions of the lifting hook heights to the logging instrument..The time-depth acquisition method and device for conveying drill strings to the logging instrument has following beneficial effects: the technical problem that the position of the logging instrument is inaccurate by misjudgement of the drill string operation range due to predictable and unpredictable factors during a logging process is solved.
Description
technical field [0001] The invention relates to the field of well logging, in particular to a time-depth acquisition method and device based on a drilling string delivery logging instrument. Background technique [0002] With the development of oil field drilling and development technology, in order to obtain underground oil and gas energy as much as possible, drilling technologies such as horizontal wells and extended-reach wells have emerged, which put forward higher requirements for logging technology. It mainly relies on the weight of the instrument itself, and its principle itself has great limitations in measuring horizontal wells and extended-reach wells. Most of the time, wireline logging cannot be used for logging operations in such wells. For this reason, the memory logging method of the drill string pushing tool has emerged. [0003] However, the storage logging method of the drill string pushing tool in the prior art calculates the position of the logging tool i...
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IPC IPC(8): E21B47/09E21B47/04
CPCE21B47/04E21B47/09
Inventor 李怀周陈东海杨志强张宏斌
Owner THE 22ND RES INST OF CHINA ELECTRONICS TECH GROUP CORP