Well depth measuring system and method
A measurement system and quantity technology, applied in the field of drilling, can solve the problems of poor precision and low efficiency of well depth measurement, and achieve the effects of high precision, real-time and accurate calculation, and high calculation efficiency
Pending Publication Date: 2020-05-05
XIAN INT INSTR MEASURE & CONTROL EQUIP
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[0005] The embodiment of the present application provides a well depth measurement system and method to solve the problems of low efficiency and poor accuracy of well depth measurement at present
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[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0029] Currently, if figure 1 As shown, the various types of derricks used in domestic oilfield drilling usually include a derrick body, a drilling floor, a hook, a drill pipe and a mouse hole. The drilling floor is set in the middle of the derrick, 2-3m away from the ground. The top of the derrick above the drill floor is suspended with a fixed pulley to hang the hook, the hook is located above the drill floor, and the kelly below the hook is vertically connec...
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The invention relates to the technical field of well drilling, in particular to a well depth measuring system and method. According to the system and the method, the following steps are included, wherein the number of loaded drill rods from a derrick to the pit bottom below the ground is counted; the distance from a large hook of the derrick to a drilling floor face is monitored in real time; thelength of each loaded drill rod is inquired in a preset drill rod information list according to the number of the loaded drill rods, the lengths of the loaded drill rods are added, and the total length of the drill rods is obtained, wherein the drill rod information list comprises a corresponding relation between an installation sequence and the lengths of the drill rods; and the distance from thelarge hook to the drilling floor face and the distance from the drilling floor face to the ground at the current moment are subtracted from the total length of the drill rods to obtain the well depthat the current moment. The system and the method provided by the embodiment do not need manual auxiliary operation, and the calculation efficiency and precision are high.
Description
technical field [0001] The present application relates to the technical field of drilling, in particular to a well depth measurement system and method. Background technique [0002] During drilling construction, construction personnel need to know the change of well depth in real time. Therefore, it is necessary to measure the well depth in real time during drilling. . [0003] At present, the well depth is mainly determined by the staff of the on-site mud logging team by installing a winch tachometer on the drawworks bearing of the drilling derrick, measuring the rotation of the drawworks to calculate the length of the wire rope on the drawworks, and manually corresponding in the mud logging software. Each time a drill pipe is used, manually add the length data of a drill pipe in the software, and use the cumulative length of all drill pipes plus the length of the steel wire rope during drilling to calculate the current well depth. [0004] The above well depth calculatio...
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IPC IPC(8): E21B47/04
CPCE21B47/04
Inventor 黄学锋黄学辉
Owner XIAN INT INSTR MEASURE & CONTROL EQUIP