The objectives of this feasibility project are : To modify a novel open path gas sensing platform previously developed for a security application and capable of continuous operation in harsh environment to monitor methane from unconventional gas extraction sites. To take data from these sensors and use a suite of adapted data inversion algorithms to pin-point the locations of emissions. To deployed and assess these systems on a number of satellite well-heads of unconventional gas sites to monitor methane gas. Overall the project aims to address the high-level challenge of developing, safe, reliable and cost-effective technologies for the emerging shale gas market. Enabled by this project it is anticipated that this suite of technologies (sensor network + algorithms) will lead to its adoption as best available technique by regulators and unconventional gas site operators . Furthermore, if proven valuable in that speciific sector it may be an attractive proposition in the more traditional oil and gas industry.