There are some testing problems in Bangladesh Titas gas field, such as field test of testing tools, safety and
sealing of string in the well, and risk of blowout on the surface of highyield gas well. To solve these problems, we analyzed the testing
process characteristics and formation testing data in Bangladesh in recent years, developed the field testing tools and testing equipment,
optimized the DST testing tools and downhole string structure, and improved the testing system and ground blowout process, etc. APR test string is
adopted on site, RDS valve, RD valve and LPRN valve are used to replace OMNI valve, expansion joint and RD sampler. The one opening one
closing working system is adopted. Two ground process blowout combustion modes of "vertical + horizontal" are adopted on the ground. 13 testing of
4 wells in Bangladesh Titas gas field have been carried out from 2016 to 2017. The success rates of the test process and the test card are 100%.
Good economic benefits have been achieved. This technology reduces the risk of in well string safety, improves the success rate of the process,
and accumulates successful test experience for Bangladeshi oil and gas field and other overseas markets.