Gas Leaking Inspection Technology

Gas Leaking Inspection Technology is a technique that uses helium gas to test the gas tightness of oil (casing) pipe connections in the field or at the connection point of oil and gas transmission lines before use. It is the most advanced leak detection method at present, and the key means to ensure the gas tightness of wellbore string and gas transmission pipeline, and effectively solves the worldwide problem of annular pressure production in natural gas Wells. At present, this technology has become a standard procedure for gas storage and the development of high-risk and highly sensitive gas fields rich in H2S and CO2. It has the characteristics of safe, reliable, sensitive and timely and wide application range.

Technical characteristics

· It can achieve air tightness under 120MPa pressure and meet high standards

· Quantitatively describe the air tightness with the leakage rate of small-molecule helium, which is more accurate

· Single point detection time is 1.5min, which is fast

· The factory end and field end of the oil (sleeve) pipe coupling are tested together, which is more reliable

Service scope

· Suitable for all kinds of gas seal buckle oil (sleeve) pipe with Φ60.3mm ~ Φ339.7mm, joint, column Φ60.3mm ~ Φ244.5mm all kinds of pipeline

· Suitable for various natural gas Wells, gas storage Wells, gas injection Wells, shale gas Wells

· Suitable for various drilling RIGS, workovers, offshore platforms and other conditions

· Suitable for oil and gas fields in desert, mountain, ocean and other harsh environments

Ability of qualification

· Drafter of SY/T 6872-2012 and SY/T 7338-2016 standards

· Obtained 34 national patents and possessed core intellectual property rights

· Safety and reliability of process and equipment were evaluated by Veritas Veritas (Report No. 80556000)

· The ultra-high pressure vessel has passed China Special Equipment Use Certification (CNT-130); Design, manufacturing certificate complete, to ensure the safety of the equipment

· Internet + intelligent monitoring system can remotely monitor and detect pressure, synchronize leakage rate data and automatically store, and trace the quality of detection

· 30 sets of equipment, 15 professional teams, annual service can reach 600 Wells

· Participated in the gas seal inspection business of all land gas storage in China

Service performance

· Service areas: Junggar, Tarim, Sichuan, Songliao, Bohai Bay, Ordos Basin and domestic users of CNPC, Sinopec, Shenhua, etc

· Service well types: natural gas Wells, gas injection Wells, coalbed methane Wells, gas storage Wells, shale gas Wells, and high-risk oil and gas Wells

· More than 2,800 Wells have been tested with nearly 2 million snaps