Abstract
Shale gas as a clean green energy has been rapidly developed in China. At present, the vertical production rate of shale gas in Chongqing area is low, and it is difficult to take into account the whole highquality shale segment with thickness of tens of meters only by one well pattern. In this paper, the internal rate of return (IRR) is used to calculate the impact of different costs and exploitation conditions on the development effect of two shale gas layers. The results show that shale gas development will be profitable only when the cost per well is controlled at around 70 million and production is provided at more than 100 million cubic meters. Domestic producers should further reduce the cost of shale gas development, increase the productivity of single well and maximize the benefit of domestic shale gas development by means of integrated innovation and technological optimization.
Highlights
Shale gas is a new clean natural gas resource, which has gained rapid development in North America, China and other countries and regions
The increment of geological reserves and exploitation degree of conventional natural gas is limited, and the dependence of domestic natural gas is increasing, so it is of great value to improve the development effect of domestic shale gas
The vertical production rate of shale gas in Chongqing area is low, and it is difficult to take into account the whole high-quality shale segment with thickness of tens of meters only by one well pattern
Summary
Shale gas is a new clean natural gas resource, which has gained rapid development in North America, China and other countries and regions. After breakthroughs and large-scale development of shale gas in the United States, shale gas accounts for about 40 percent of the country's annual gas production. According to the latest survey and calculation by the Ministry of Natural Resources, the recoverable reserves of shale gas in China are 21.8 trillion cubic meters, still higher than the geological reserves of the United States. Chongqing Fuling Shale Gas Field is the first national shale gas demonstration zone, with a cumulative gas production of 200 cubic meters in 2018. It is the first shale gas development zone with commercial exploitation value after shale gas development in the United States. The shale gas resources in Weiyuan block are about 620 billion cubic meters, and the recoverable capacity is more than 260 billion cubic meters
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