ZT-MWD wireless measurement while drilling system is used for real-time measurement and transmission of wellbore trajectory parameters during the drilling process. The system has the characteristics of advanced design principle, reliable performance, high measurement accuracy, wide application range, and is fully compatible with imported products of the same type. The ZT-MWD system relies on underground turbine generators to provide power, and uses mud positive pulse signals to transmit real-time wellbore trajectory data collected by downhole measurement sensors and tool face data of guiding tools to the surface, providing guidance for drilling engineers on trajectory control.
Technical Features
All working conditions: can be used for land, desert, and sea operations;
Full range of products: There are products suitable for five wellbore sizes: 4-3/4 ", 6", 8-1/2 ", 12-1/4", and 17-1/2 ", which can meet the drilling operation needs under different wellbore conditions;
The self generating function is economically reliable: it has more application advantages and economy than devices relying on batteries, with safe operation and avoiding battery consumption;
High reliability: capable of continuous and stable long-term safe operation, less constrained by other drilling operation conditions, and reducing abnormal drilling;
Good compatibility: It can be fully compatible with imported MWD/LWD systems of the same type;
High safety: There is an explosion-proof system to isolate ground equipment, ensuring safety and protecting the system;
Fast transmission speed: uploading a set of tool surface data only takes 9 seconds;
Compact system structure: The downhole instrument structure is simple and compact, with a typical conventional 8-1/2 "wellbore instrument length of only 2.9 meters;
Easy homework: The on-site inspection, assembly, and disassembly of the system are convenient and fast.
Main functions
Wellbore angle measurement function: The probe measures the values of internal sensors such as accelerometers, flux gates, temperature sensors, etc., and calculates the wellbore attitude angle data based on the measured values;
Data encoding function: According to on-site usage requirements, the probe can be set to a fixed or non fixed transmission data sequence mode, encoding the transmission data in the form of electrical pulses and sending the electrical pulse signal to the pulse generator in real time;
Underground power supply function: The pulse generator is equipped with a generator, which receives the power transmitted by the mud through the rotor, converts the kinetic energy into electrical energy internally, and supplies it to the exploration tube work;
Data transmission function: The pulse generator receives the electrical pulse control signal sent by the probe, and the pulse generating mechanism of the pulse generator sends out a positive pulse pressure signal of the mud through the drilling fluid;
Signal decoding function: The ground system collects pressure signals from pressure sensors through interface acquisition devices, converts them into real-time waveform data, and then uses decoding algorithms to restore the waveform data to the measurement data sent underground.
