Unconventional oil and gas development technology is becoming clearer

The overall development strategy for unconventional natural gas in China should be through institutional guidance and policy support, actively promote scientific and technological innovation, and accelerate the construction of pilot development demonstration areas. While ensuring the rapid development of conventional natural gas, the pace of development and utilization of unconventional natural gas is accelerated.

According to the overall development strategy proposed by the Academy of Engineering for unconventional natural gas, by 2020, China’s unconventional natural gas production is expected to reach 150 billion cubic meters, roughly the same as conventional natural gas production; by 2030, it may reach 300 billion cubic meters, accounting for the total natural gas production. 2/3, has become the main energy supporting the rapid and healthy development of China's natural gas industry.

Unconventional gas families include shale gas, tight gas, coalbed gas, and natural gas hydrates. At present, shale gas is the most popular, but shale gas development on a large scale still has problems such as “unclear homes and low technology maturity”. Last year, the Academy of Engineering initiated the "China's Unconventional Natural Gas Development and Utilization Strategy Study" project. The project team used analogy to estimate that China's marine shale gas technology can recover 8.8 trillion cubic meters of resources. However, due to the low degree of exploration and recognition of the shale gas in the continental facies and the marine-continental phase in China, and the lack of a foreign analogy basis, the assessment of relevant data is suspended.

In addition to “unclear households”, the development of shale gas still has the problem of “poor economic returns and low technology maturity”. According to the actual production and investment data at the current stage, the investment and production of Wei 201-H1 wells are calculated without regard to investment discounts, taxes, and operating fees. The shale gas equilibrium gas price is as high as 1.64 yuan/cubic meter, which is much higher than The current well-in-charge price is 1.19 yuan/cubic meter. If the country does not issue a subsidy policy, it is difficult for companies to bear the financial pressure.

China's shale gas is still at the initial stage of technology introduction and exploration. In the future, shale gas engineering technology aims to develop key technologies and equipment systems that are low-cost, environmentally friendly, convenient and miniaturized.

Based on data such as total resources, availability, and technology maturity, and drawing on foreign experience, the task force predicts a three-step route for the development and utilization of shale gas over the next 20 years.

As a first step, during the “Twelfth Five-Year Plan” period, we will select marine, transitional sea-continental, and favorable shale gas enrichment areas, and make a pilot development demonstration area to achieve a smooth start of shale gas industry development. The second step is to focus on the development of large-scale marine shale gas in the South during the 13th Five-Year Plan period. At the same time, it will break through the industrial development of marine-continental transitional facies and continental shale gas, and realize the scale development and utilization of shale gas, and achieve 20 billion in 2020. Cubic rice production. In the third step, after 2020, a convenient, efficient, low-cost, environmentally-friendly shale gas exploration and development supporting technology and an effective management system mechanism will be formed to suit the characteristics of China's geological and surface features. Shale gas production will grow rapidly, by 2030. Yield 100 billion cubic meters.

In general, China's current unconventional natural gas resources are relatively low in abundance, development is difficult, and technical requirements are high. However, as a strategic emerging industry, due to the high professional division of labor, strong innovation-driven, and large policy role, it is more suitable for the development model of division of labor and collaboration. Therefore, technological progress and policy support are the key to its large-scale development and utilization.