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一、引言石油和天然气深深地埋在地下几百米、几千米和万米以上,看不见也摸不着。人们为了寻找它,首先得采用地质调查或地球物理勘探等方法来判断地下岩层的起伏状况和是否存在储油储气的构造。找到了可能储油、气的构造后,必须采取钻探的方法(即在地面上打井的方法)才能肯定构造中是否有油、气以及确定其储量,为此目的所打的钻井称为“勘探井”。找到了油、气之后,还得在油气田上打出几百或几千口的“生产井”,通过生产井
First, the introduction of oil and gas buried in the ground a few hundred meters deep, a few kilometers and meters above, invisible and touching. In order to search for it, people should first use geological survey or geophysical prospecting methods to determine the fluctuation of underground rock formations and the existence of oil and gas reservoirs. Once a possible oil and gas structure has been found, a drilling method (a method of drilling a well on the ground) must be taken to confirm that there is oil and gas in the structure and to determine its reserves. The drilling for this purpose is called “ Exploration well. ” After finding the oil and gas, they have to hit a few hundred or a few thousand “production wells” on the oil and gas fields,