1·The faultiness of existing models was discussed. A new model for elastic wave velocity of unconsolidated sandstone was developed on the basis of these models.
首先讨论了现有各类模型存在的不足，并在这些模型的基础上，提出了新的疏松砂岩弹性波速分析模型。
2·Based on system analysis, a novel development optimization model is presented for water-driven unconsolidated sandstone gas reservoirs.
在系统分析的基础上，提出了水驱疏松砂岩气藏新的开发优化模式。
3·The reservoir rock of main oilfields in Bohai is unconsolidated and sand controls are needed, therefore, special technical problems must be resolved in production.
渤海主要油田的岩石胶结疏松，均需要防砂，因此，在开采中应对特殊的工艺问题进行攻关。
4·The fine siltstone reservoir is likely to produce sand under larger pressure drops because of its shallow depth, worse compaction and unconsolidated.
粉细砂岩油井由于埋藏浅、地层压实程度低、胶结疏松，在较大生产压差下容易出砂。
5·This technology is significant to improve oil production from unconsolidated silty sand stone reservoir and to the field applications.
粉细砂岩油藏防砂工艺技术对于提高疏松砂岩粉细砂油藏产能及现场应用有重要的指导意义。
1·Methods of tunnel excavation in unconsolidated formations and the collapse zone treatment are intro-duced according to the formation properties fo exit section of Yangzong No.
针对阳宗海一号隧道出口段的地层特点，介绍了在松散土体地层中遂道施工方法的选择及在施工中出现坍塌的处理方法。
2·The paper presents the operational process of systematic coring, and sums up the experience of coring in the unconsolidated formation from analyzing each technical links in the coring.
文中介绍了系统取心的施工过程，通过详细分析取心的各个技术环节，总结出松散地层取心经验。
3·The ion exchange between mixed water and unconsolidated deposits inside caves is characteristic of cation exchange adsorption.
而混合水与岩溶空间内的松散沉积物间的各种离子交换作用主要是阳离子交换吸附。
4·However gas hydrate is formed firstly on the skeleton and cement the granules in unconsolidated sediments experiments, afterward they grow suspending in the pore space.
而在松散沉积物实验中，水合物先依附于沉积物骨架生成，并胶结了骨架颗粒，之后水合物开始在沉积物孔隙中以悬浮状形态生成。
5·Gravel is an unconsolidated mixture of rock fragments or pebbles.
砂砾是砾石岩石碎片或卵石的松散的混合物。
1·The commonest spaces are those among the particles—sand grains and tiny pebbles—of loose, unconsolidated sand and gravel.
最常见的空间是那些由松散的、未固结的砂和砾石组成的颗粒（沙粒和小卵石）之间的空间。
2·Wudaoliang group is grayish - white, yellow - grey, dark - grey ash rock, which interbeded with the conglomerate, sandstone, a little amount mudstone, oil shale with unconsolidated sand mud rock.
五道梁群以灰白色、灰黄色灰岩为主，含有砾岩、砂岩，夹有少量泥岩、油页岩和未固结砂泥沉积。