微粒运移伤害是疏松产层一种比较普遍又相当严重的地层伤害。
The particle migration damage is a kind of general and serious damage of unconsolidated producing formation.
下部地层以石灰岩、泥页岩、砂岩为主，地层疏松，易漏失，属低压高产地层。
The lower formation is consisted of loose limestone, shale and sandstone, with low formation pressure coefficient.
具体到渤海高渗透疏松砂岩，这些环节包括绕丝筛管、砾石充填层、射孔孔眼、压实带及近井原状地层。
For high permeability and loose sand in bohai, these links are composed of wire wrapped screen, gravel packing zone, perf, skin and near wellbore undisturbed formation.
馆上段地层埋藏较浅，成岩作用弱，岩石疏松，为早期成岩阶段的产物。
Due to low burying depth and weak diagenesis, the formation is loosely solidified, which shows an immature stage of diagenesis.
这为研究疏松砂岩地层套管的损害机制及防治措施提供了理论依据。
The study provides the basis for the research of the casing failure mechanism and controlling measure of the loosen sandstone reservoirs.
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。
The fine siltstone reservoir is likely to produce sand under larger pressure drops because of its shallow depth, worse compaction and unconsolidated.
本文介绍了利用综合录井中的工程参数识别裂缝的方法，其中优选出反映地层可钻性的DCS指数，根据DCS指数对地层可钻性及疏松程度的反映来识别储集层裂缝。
This paper introduces the fracture identification method utilizing engineering parameter of comprehensive mud logging, Among them, the DCS index reflects the drillability and unconsolidated property.
在川西地区碎屑岩地层中，砂岩与泥岩、致密砂岩与疏松砂岩可以通过肉眼岩屑鉴定或钻时变化进行识别。
In the clastic reservoirs of west Sichuan Basin, sandstone and mudstone, tight sandstone and loose sandstone can be recognized by megascopic cuttings determination and drill time changes.
由于地层疏松，该井井斜角较大等造成取心难度大。
Formations were unconsolidated and hole deviation Angle was high, so it was difficult to recover cores from this well.
由于地层疏松，该井井斜角较大等造成取心难度大。
Formations were unconsolidated and hole deviation Angle was high, so it was difficult to recover cores from this well.
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