FIELD: oil and gas industry. ^ SUBSTANCE: screened pipe consists of concentric arranged external and internal pipes and of filter element. The external pipe is blanked-off from beneath and is connected with the internal pipe by a sub under which there are made inlet channels communicating external space of the external pipe with internal space. From beneath the internal pipe is equipped with a hollow cylinder diffuser with an upper face narrowing upward to external surface of the internal pipe. The filter element is made in form of a chamber with a hollow filter inside pressure tight connected with the sub from beneath, while from the top it is connected with an additional sub wherein a blanked-off from beneath filter is fixed. The filter around external surface is equipped with through slits long sides of which converge to external surface. ^ EFFECT: increased efficiency of operation. ^ 1 dwg
申请公布号
RU2385410(C1)
申请公布日期
2010.03.27
申请号
RU20080137708
申请日期
2008.09.19
申请人
OTKRYTOE AKTSIONERNOE OBSHCHESTVO "TATNEFT'" IM. V.D. SHASHINA