由于携砂液向地层的滤失以及通过筛管缝隙的流体质量交换，水平井砾石充填过程中冲筛、井筒环空两个流动系统均为复杂的变质量流。
During the process of gravel-packing in horizontal Wells, there are the filtration flow of the carrier fluid to the formation and the exchange flow through the screen slots.
瓶颈裂缝可引起井产能急剧下降，压裂液滤失也对井动态有一定的负面影响。
The results indict that choked fracture and leak off of fracture fluid had a negative effect on well productivity.
阐述了管井井点排水的设计布置及井点钻孔质量、三滤质量、洗井质量、抽水连续性等关键工序的施工技术。
The design layout, key process of construction, such as well point drilling quality, filtrating quality, well washing quality, continuity of pumping were discussed.
反滤回灌井是地下水库中一种有效的回灌设施，它由回灌井和井口反滤层组成。
Recharge well with a filter layer is a kind of valid recharge facilities in groundwater reservoirs.
滤膜在天然滤床渗流井滤净水中具有重要作用。
The filter film plays an important role in water purification in seepaging well with natural filter bed.
为适合小井眼、小间隙井的固井要求，研究了复合塑性降滤失剂PT—2体系。
To meet the requirements of well cementing fors mall borehole and small annular space, the composite plastic fluid loss additive PT-2 was studied.
欠平衡完井技术与传统的常规完井技术相比，可以使流体滤失降低到最小程度，并能最大限度地减少储层损害及改善油气井产能。
Comparing with conventional completion technology, UBD completion could make fluid loss decrease to less, and avoid reservoir damage and improve oil & gas well production.
非完整反滤回灌井井流运动由砂反滤层的竖向流和非完整回灌井井流组合而成。
Vertical flow of the sandy filter layer and well flow of the common partially penetrating recharge well are combined to make a well flow of the partially penetrating recharge well with a filter layer.
按渗井原理级配的复合多层滤料过滤，水按重力自上而下流动。
According to the principle of composite graded into seepage Wells pits multilayer filter material, water filtration by gravity flow top-down.
千米以上的深水地热井施工常会出现滤水材料或上水材料蓬堵及套管滤水管折断等事故。
In construction of deep geothermal water well under 1000m, accidents of filtering or sealing material plugging and casing or strainer breaking will happened rather often.
千米以上的深水地热井施工常会出现滤水材料或上水材料蓬堵及套管滤水管折断等事故。
In construction of deep geothermal water well under 1000m, accidents of filtering or sealing material plugging and casing or strainer breaking will happened rather often.
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