SCREEN TUBE

• Main Authors: TSUKUDA RYOSUKE, TAKEDA MAKOTO, HAZAMA MASAYA, HAMAGUCHI TAKENOBU
• Format: Patent
• Language: English; Japanese
• Published: 19.08.2021
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, ORDISTRIBUTING WATER; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; SEWERAGE; WATER SUPPLY

To provide a screen tube arranged with a protective member for forming water passing slits on the outer periphery of a tube body having through-holes, suppressed in positional displacement between the tube body and the protective member.SOLUTION: A screen tube 1 comprises a cylindrical tube body 10, multiple through-holes 11 penetrating through the tube body 10 outward and inward, a resin protective member 20 arranged along an outer periphery of the tube body 10, and water passing slits 27 formed of the protective member 20. An additive agent is contained in the resin forming the protective member 20 for preventing expansion and shrinkage of the protective member 20 due to temperature change.SELECTED DRAWING: Figure 1 【課題】透孔を備えた管本体の外周に、通水スリット形成用の保護部材を配置したスクリーン管において、管本体と保護部材との位置ずれを抑制する。【解決手段】筒状を成す管本体１０と、管本体１０を内外に貫通する複数の透孔１１と、管本体１０の外面に沿って配置される樹脂製の保護部材２０と、保護部材２０によって形成される通水スリット２７とを備えるスクリーン管１において、保護部材２０を構成する樹脂に温度変化に伴う保護部材２０の膨張及び収縮を抑制する添加剤が含有されている構成とした。【選択図】図１