Well deviation measuring system for gas drilling

Abstract

The invention discloses a well deviation measuring system for gas drilling used for measuring well deviation and positions in conventional gas drilling. The system realizes precisely, stably and conveniently transmitting signals by adopting a way that wire transmission and wireless transmission are matched. The technical scheme is that the system consists of a measuring head, a cable quick coupling, a signal transmission nipple and ground equipment, wherein the measuring head is placed above a drilling head through a cable, so that signals are transmitted to the signal transmission nipple of a wellhead through a cable; the cables are connected by adopting the cable quick coupling, the signal transmission nipple is arranged between a water faucet and a square drilling rod, and a signal processing circuit board, a power supply and a signal projecter are arranged inside the inner core shell of the signal transmission nipple; a cable sealing joint is arranged at the lower end of the inner core shell, the signal transmitter is connected with an antenna cover plate through a guide wire, and the ground equipment receives signals through a signal receiver. The system can realize measuring and transmitting signals in real time along with drilling, so that the system can be used for gas drilling and unbalanced drilling.

Description

technical field [0001] The invention relates to an on-line well deviation measurement system for gas drilling used for measuring well deviation and orientation in conventional gas drilling. The system can realize real-time measurement and transmission while drilling, and is suitable for measuring well deviation during gas drilling or underbalanced drilling. control. Background technique [0002] During the drilling operation, the commonly used well inclination measuring instruments mainly use mud pulses to transmit signals to the wellhead, or store the collected signal data inside the measuring instrument, and then read it after pulling out the drill. Both of the above two methods have defects. The efficiency of the mud pulse transmission signal is obviously affected by the characteristics of the mud medium, accompanied by strong attenuation characteristics, and contains various noises and interferences. Also, it is not suitable for gas drilling due to the need for transpor...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a well deviation measurement system for gas drilling in order to solve the problems of untimely control of well deviation and lag in the implementation of adjustment measures caused by the failure of the well deviation measurement signal to be transmitted to the ground in real time during the gas drilling process.

Images