Under the background of energy and resource shortage and the environment pollution, the utilization and research of biomass wastes as a kind of resource attracting worldwide attention. Hydrothermal reaction provides an effective method for the reutilization of biomass wastes.

随着能源与资源的短缺和环境污染的日益严重，生物质废弃物资源化的利用研究引起了广泛的关注。

Purpose To solve the problems of water cut increasing and oil production decreasing caused by reutilization of good permeability layers and little or no steam absorption in low permeability layers during steam injection after multi-cycle steam soaking.

目的解决高周期吞吐后，渗透性好的油层在注汽时重复利用，而渗透性差的油层在注汽时吸汽量较少或不吸汽，从而导致油井含水上升和产油量下降的问题。