Throngh studying deep well , extra-deep well and oil gas well cementation technologies , this article analyzes the characteristics and key technology of them and expounds the common problems , the present situation and developmental trend of deep well , extra-deep well and oil gas well cementation .
Calcite cementation seens a possibility where lime grains or calcareous organisms are abundant .
在灰质颗粒或钙质生物丰富的地方,方解石胶结作用似乎是有可能的。
The study on the nature of cementation of kaolinite with goethite by magnetism of substance .
从物质的磁性看高岭土与针铁矿的胶结本质。
Carcass cementation compact , specific gravity enlarge , no water absorption , knock that has noise clear and melodious .
胎体烧结致密,比重加大,不吸水,叩之有清脆响声。
From the evidence of these and other examples not included above , a conclusion seems justified that the degree of compaction and cementation must vary markedly at the time of expulsion .