Conventional oil shale miningmethod has higher coat because of restricting by a good many factors.
常规油页岩开采方法,由于受诸多因素限制成本较高。
2
Miningmethod of oil extraction by the open and underground mining.
石油的开采办法由露天开采和地下开采。
3
Oil exploitation miningmethod is facing a great challenge: changing from Steam Air gorge and Disgorge (SAGD) to a new method, it is a inevitable need for the new dynamic test.