Method and system for real-time multi-parameter measurement and transmission while drilling in all well sections

Abstract

The invention discloses a method and a system for implementing parameter measurement while drilling and real-time transmission to the ground at a plurality of points in a mineshaft along a drill column based on sound wave information transmission. An underground while-drilling parameter measurement system is used for acquiring underground information, the information is regulated and then transmitted to an underground signal transmitting system and transmitted upwards in a sound wave manner along the drill column; sound wave signal relay systems are used for receiving a signal upwards-transmitted from the underground, decoding the signal, combining the measurement information, and then transmitting the information upwards; afterwards, the signal is upwards-transmitted to the ground, received by a ground receiving system, decoded and then wirelessly transmitted to a ground information display and decision making system, wherein a plurality of relay systems are arranged along the drill column according to the well drilling construction requirements so as to realize real-time acquisition of the parameters of all well sections along a well body. The method and the system provided by the invention can be used for acquiring real-time underground parameters of all well sections so as to effectively reduce the risk of accidents such as underground jamming of a drill and hole-wall collapse, improve the well drilling efficiency and provide support for best well drilling decisions. The method and the system can be used for greatly improving the precise pressure control capability especially during a managed pressure drilling process.

Description

technical field [0001] The invention relates to a method and system for multi-point measurement and real-time transmission of information while drilling along the wellbore to the ground during oil and gas drilling. Background technique [0002] In the process of oil and gas drilling operations, it is very important to monitor the downhole parameters (pressure, temperature, well diameter, well deviation, azimuth, etc.) of the whole well section along the wellbore direction in real time. Realize the measurement of the downhole parameters of the whole well section and transmit them to the surface in real time, which can help the drilling engineering operators to timely and accurately understand the dynamic cleaning of cuttings, the equivalent circulation density of mud, the influx or loss of downhole fluid and the The actual wellbore conditions, etc., can more effectively control the displacement of the mud pump, the gravity of the drilling fluid, the ROP and the selection of p...

AI Technical Summary

Problems solved by technology

[0004] However, in the measurement-while-drilling and transmission system based on acoustic wave information transmission in the prior art, it is difficult to accurately measure the whole well section in real time and transmit downhole information at high speed, and the effect achieved is not very ideal, and there are still large problems. drilling risk

Especially in the process of managed pressure drilling, fine pressure control capability needs to be improved

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