Formation factors and mechanism of the laumontite in upper Triassic Yanchang group of Jingan oilfield are analyzed.
分析了靖安油田上三叠系延长统浊沸石的形成条件及形成机理。
The main control factors of sequence formation are tectonics and climate change in continental sequences of Yanchang Group in North Shaanxi Province.
在陕北地区延长组陆相层序地层中，层序形成的主要控制因素是构造运动和气候变化。
The number of enterprises with sales revenue over RMB10 billion grew from 4 to 23, among which, the sales revenue of Yanchang Group exceed RMB100 billion.
销售收入过百亿的企业从4家增加到23家，其中延长集团突破千亿元大关。
The thick sandstones in Chang 8 oil Formation of Yanchang group may be divided into two types by the research on sedimentary petrology and sequence stratigraphy.
通过对延长统长8段厚层砂岩沉积岩石学和层序地层学研究，将其分为两类，一类是由多期单一成因的分流河道砂岩叠加构成；
I would also like to congratulate the Institute and Yanchang Petroleum Group on today's MOU signing.
我还要祝贺研究院和延长石油今天签署谅解备忘录。
I would also like to congratulate the Institute and Yanchang Petroleum Group on today's MOU signing.
我还要祝贺研究院和延长石油今天签署谅解备忘录。
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