The past petroleum resource assessments concerned the evaluation of in-place resources in China, so it was difficult to calculate the recoverable resources using the in-place resources.
中国以往的油气资源评价侧重于对地质资源量的评价，如何由地质资源量得到可采资源量一直是油气资源评价中的难题。
How to exploit the residual oil in the stratum efficiently after water flooding, which accounts for 60 ~ 70% reserves in place, is a main task of petroleum engineering experts the entire world.
如何经济有效地开采水驱开发后残留在地层中的60 ~ 70%的剩余油，已成为世界各国油藏工程专家努力攻关的课题。
The description is required to establish the amount of petroleum in place, predict the amount that can be produced and plan development operations.
油藏描述要确定石油的地下储量，预测能开采出来的油量以及规划开发的措施。
Combustible gas deflagrations in a closed place are always the big disaster in the chemical industry, petroleum industry, mining industry, and metallurgical industry.
密闭空间可燃气体爆炸一直是化工、石油、矿业、冶金等行业的重大灾害之一。
Petroleum play the role of normal energy and the material of products widely used in producing living, even now, there isn't anything could take the place in scale economically.
无论作为常规动力能源，还是石油制成品的使用，目前还没有其它替代品能够具规模、经济性地取代它的地位。
The accidents of flammable gas explosion in closed vessels often take place in the industries of petroleum, chemicals, mines, etc. causing large economic loss and people injuring.
在石油、化工、矿业等行业中，密闭容器内可燃气体爆炸的事故屡屡发生，造成了巨大的经济损失和人员伤亡。
We should deeply learn the lessons from the fire accident took place in rural network of Gaotang county petroleum co.
高唐县石油公司农村经营点火灾事故的教训非常深刻。
Gentle slope in the dust-pan like sag has geological condition for the formation of petroleum reservoirs, and is the favorable place for the accumulation of oil and gas.
箕式凹陷缓坡带具有油气藏形成的地质条件，是油气聚集的有利场所。
Oil price soars to take place the first time in 1974 petroleum crisis for the first time, petroleum price( each) is from the 1973 not is tallest to rise to USDs 3 over USDs 13;
第一次油价上涨发生在1974年的第一次石油危机，石油价格（每桶）从1973年的不到3美元最高涨到超过13美元；
Oil price soars to take place the first time in 1974 petroleum crisis for the first time, petroleum price( each) is from the 1973 not is tallest to rise to USDs 3 over USDs 13;
第一次油价上涨发生在1974年的第一次石油危机，石油价格（每桶）从1973年的不到3美元最高涨到超过13美元；
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