The 2.47MMSCFD?shale gas liquefaction plant in Junlian, Sichuan was the first commercialized shale gas liquefaction plant in China. The project was implemented jointly by Sichuan Sentai Energy and Junlian County government under the support of China National Petroleum Corporation Zhejiang Oilfield. It was of great difficulty to carry out civil construction in Junlian, which featured typical karst rock formation and rainy climate in the mountains. Shale gas is a more complex mix than conventional natural gas and the shale gas wells are not allowed to be sealed. Therefore, a tailored process design coupled with flexible operation facilities were required in the project.