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Analysis of China’s Drilling Engineering Technological Development for Underground Gas Storage
Li Guotao, Zhang Shuqi
2016, 35(1):
28-31.
DOI: 10.3969/j.issn.1002-302x.2016.01.007
It is nearly 15 years since China’s first underground gas storage (UGS) in gas reservoir - Dazhangtuo gas storage depot - was put into operation in 2000. With a system of unique drilling engineering technology developed, a series of results of process technology have been achieved since then in the areas of drilling and completion, cementing, injecting, reservoir protection, monitoring, plugging of old wells, satisfying the country’s demand for UGS construction. In attempts to develop the technology of UGS reservoir construction, identify the technological development direction in the future and focus on China’s actual conditions and the foreign development trend for UGS reservoir construction, this article offers some suggestions on the drilling engineering technology for UGS reservoir construction in China. The suggestions include a series of measures, such as adoption of unified and standardized process design, enhancement of completion technology research, emphasis on deployment of monitoring wells, scientific selection of materials for injection string, enhancement of technological research on annular pressure control, and more efforts for study of old well plugging treatment technology.
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