Spontaneous imbibition behavior of brine,nonionic surfactant solution,anionic surfactant solution,and cationic surfactant solution and its effects on recovery efficiency were studied in water-wet Chinese outcrop sandstones.
利用国产露头砂岩岩心,研究水湿条件下盐水、非离子表面活性剂、阴离子表面活性剂和阳离子表面活性剂溶液的自发渗吸规律及其对采收率的影响,对比盐水渗吸、表面活性剂溶液渗吸和先盐水渗吸后表面活性剂溶液的渗吸情况。
The effect of inorganic salt on spontaneous imbibition and recovery factor of surfactant flooding has been studied under water-wet condition with outcrop sandstone cores.
利用国产露头砂岩岩心,研究了亲水条件下,无机盐对岩心采用表面活性剂溶液进行自发渗吸驱油的规律和采收率的影响。
To use 3D seismic prospecting in control of coal seam occurrence form has demonstrated its satisfying effects,but for a mine's high yield,high efficiency geological guaranteeing system still need to determine geological anomalous bodies of“barren zone”,subsided column,gob area and coal seam outcrop etc.
三维地震勘探在控制煤层赋存形态方面已取得了令人满意的效果,但矿井高产高效地质保障系统需要准确圈定“无煤带”、陷落柱、老窑采空区、煤层露头等地质异常体。
during researching the development of spontaneons combustion of coal outcrop.
论述了煤体与岩体的受热破坏特性 ,对露头煤层自燃火灾中煤岩体的热破坏机制进行了定性分析。
During our first three expeditions, we never gave a second thought to the gravels that overlay the Triassic rock outcrops in the southwestern part of the island.
在我们头三个田野季节里，岛上西南部三叠纪岩层露头处上面覆盖的碎石，我们从不留意。
Detection of the Limestone Karst Cracks in Coal Outcrop Area by GPR
利用探地雷达技术探测煤层露头区灰岩岩溶裂隙
Study on Outcrop Sequence Stratigraphy of the Lower-Middle Ordovician Strata in Keping Tarim Basin
塔里木盆地柯坪地区中下奥陶统碳酸盐岩露头层序地层学研究
The relation between outcrop width and thickness depends on the dip of the bed, the slope of the ground, and the direction of traverse.
露头宽度与厚度的关系取决于岩层的产状、地面坡度和路线方向。
A portion of bedrock or other stratum protruding through the soil level.
出露层露出地表的一部分基岩或其他地层
The outcrop of the bed is then drawn through the intersecting contour points bearing in mind the closure directions anticipated from the rule of Vs.
考虑到V字形法则预计的圈闭方向，通过等高线交点勾出岩层的露头线。
The outcrop pattern that the bed should make on the map may be determined by using the structure contour method, in reverse as shown in figure 14.
该岩层在图上应有的露头形态可与图14相反，用构造等高线法予以确定。
The Comparative Analysis of Diagenesis of Outcrop Sandstones and Core Sandstones in Chengzihe Formation、Muling Formation, Jixi Basin
鸡西盆地城子河组、穆棱组露头砂岩与岩芯砂岩成岩作用比较分析
At a surface exposure the host rock dips steeply to the east.
在一个露头处，含矿主岩向东陡倾。
the part of a rock formation that appears above the surface of the surrounding land.
露出地表的一部分基岩或其他地层。
Seams in the anorthosite series are only intermittently exposed.
斜长岩组中的矿层仅断续出露。
A series of sandstone beds may crop out in one area.
一组砂岩层可在某地区露出。
A portion of stratified rock separated from a main formation by erosion.
外露层由于受腐蚀而从主岩层脱落的成层岩石的一部分
and with their original rocky interior buried under layers of
裸露的石头都会由一层层
The Main Chromitite Seam and the Merensky Reef do not outcrop well.
主铬铁岩矿层及麦仑斯基矿层出露不好。
granit is S-type and its evolution sequence might begranomonzonite → muscovite-granite(outcrop) → feldspar-granit →muscovite-granite(core);
花岗岩演化顺序可能为二长花岗岩→露头白云母花岗岩→钾长花岗岩→白云母花岗岩芯。
Practically every rock outcrop shows numberless joints.
实际上所有岩石的露头都显示许许多多的节理。
Rock outcrops form almost continuous low cliffs.
岩石露头形成几乎连绵不绝的低矮峭壁。
