Tightness Testing Branch has become a leader in tightness testing technology in China's oilfield technical service field by virtue of its excellent capabilities in the fields of gas leak testing technology for tubing and casing, no-indentation top release buckle technology, leak testing technology (including hydraulic test, gas-tightness test, and helium leak testing), LDAR technology, flange management technology, industrial cleaning technology, and gas leakage monitoring technology, etc. We provide total leak testing technology solutions for the whole life cycle of process industry facilities, focusing on solving leakage pain points for customers, preventing leakage, identifying leakage, solving leakage, and realizing the creation of “Zero Leakage Factory”.

Gas leak testing for tubing and casing is a technology to test the gas tightness of threaded connections with helium gas on site. It is the most advanced method to judge the leakage at present, and is the key means to ensure the gas tightness of wellbore tubing column, which effectively solves the world-wide problem of natural gas well annulus production with pressure. At present, this technology has become a standard process in the construction of high temperature and high pressure gas wells, gas storage wells, CCUS wells, energy storage wells and so on. It is characterized by safety and reliability, sensitivity and timeliness, and wide range of application.

It is the most advanced tubular running service in the world., which is provided by a specialized team. Through the special equipment and instruments, professional technical talents and strict technical standards, we accurately monitor the torque of oil/casing upper buckling, etc. The technology has the advantages of no harm to the special steel oil casing, optimal torque control of oil casing upper buckling, reliable sealing of upper buckling, etc., which can ensure the safe and environmentally friendly production of special oil and gas wells, extend the service life of tubular column, and save the development cost, such as the production of high-pressure, high-temperature and high-sulfur wells. This technology has the advantages of no harm to special steel oil casing, optimal torque control of oil casing snap-on, reliable snap-on sealing, etc., which can ensure the safe and environmentally friendly production of high pressure/high temperature/high sulfur content oil and gas wells, extend the service life of tubing column, and save the development cost.

Leak testing can effectively detect the exact location of leakage points in industrial facilities such as flanges, valves, instruments, etc., which facilitates on-site repairs and provides efficient protection for the safe operation of industrial facilities. Leak testing adopts different test methods according to the design pressure, design temperature, internal medium and operation status of the process system, and provides a full range of leak testing services including hydraulic test, gas tightness test and helium leak testing.

As a key connecting component in industrial piping systems, the stability and tightness of flanges are critical to the safe operation of the entire system. The flange management services provided by Tong Ao Inspection Group include not only comprehensive inspection and assessment, but also flange fastening, supervision, processing, repair and international training and certification of operators to ensure optimal performance of flanges throughout their life cycle.

LDAR (Leak Detection and Repair) focuses on the detection and repair of volatile organic compounds (VOCs) and hazardous gas leakage in industrial facilities. Our services help companies meet their environmental responsibilities and optimize their operating costs by reducing environmental pollution and improving energy efficiency.