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。
Sand production is one of the major concerns in unconsolidated sandstone reservoir development.
出砂是疏松砂岩油藏开发面临的主要难题之一。
Hence, it is proposed to allow an appropriate amount of sand production during recovery of unconsolidated sandstone gas reservoirs.
疏松砂岩气藏在开采过程中容易出砂，采取完全防砂的方式进行开采，既增加了气井的成本，又降低了气藏的开发速度。
Recent years, we have found and developed many unconsolidated sand gas reservoirs. The proved reserves and the produced reserves are very considerable.
近年来，发现并投入开发了很多砂岩气藏，其探明储量和已动用储量都是很可观的。
The instability of the horizontal hole in unconsolidated sand reservoir is the main topic which must be considered during the horizontal well drilling operation.
在疏松砂岩油藏中钻水平井首先要解决的是井眼失稳问题。
A series of defects exist in the cup circulation pack sand control tools and slip filling sand control tools currently used in Binnan unconsolidated sandstone reservoir.
针对滨南采油厂疏松砂岩出砂油藏所用皮碗式循环充填防砂工具和卡瓦式充填防砂工具存在的一系列弊端，研制应用了新型无卡瓦胶筒式循环充填工具。
Unconsolidated sand reservoir always be buried not deep, because of it's low cementation and high content of clay and sundry, the unconsolidated rock is easy to sanding during exploitation.
疏松砂岩气藏由于埋藏较浅、岩石胶结性差，并且粘土和杂基含量高，使得这类气藏在开采过程中容易出砂。
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。
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。
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。
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。
Sand production in oil and gas wells has become a serious problem for unconsolidated reservoir production.
油气井的出砂已经成为困扰疏松油藏生产的一个严重问题。
Shallow gas formations are of the characteristics of shallow burial depth, low compaction degree, unconsolidated cementation, easy sand producing etc.
浅气层具有埋藏浅、压实程度低、胶结疏松、生产时容易出砂的特点。
Most shallow reservoirs in Bohai sea are unconsolidated formation with heavy oil, and they are developed mainly by using a sand exclusion management.
渤海浅层油藏大多为胶结疏松的稠油油藏，这类油藏的开发目前主要采取防砂管理方式。
Most shallow reservoirs in Bohai sea are unconsolidated formation with heavy oil, and they are developed mainly by using a sand exclusion management.
渤海浅层油藏大多为胶结疏松的稠油油藏，这类油藏的开发目前主要采取防砂管理方式。
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