Title:
【発明の名称】選択的隔離スクリーンの製造方法
Document Type and Number:
Japanese Patent JP2891583
Kind Code:
B2
Abstract:
A method of manufacturing a selective isolation screen includes steps of preparing for a tubular screen (2) provided with spacer members (4) and a wire (5) on a base member (3), and supplying sealing material from a sealing material supply device (6) which supplies sealing material at a location where sealing is required on the tubular screen while rotating the sealing material supply device relative to the tubular screen thereby filling the annulus between the spacer members which are adjacent to each other in the circumferential deirection to form seal means (7). Difficulty in welding can thereby be avoided and location and state of mounting of sleeves can be visually checked.
Inventors:
NAGAOKA TADAYOSHI
DERII ESU SUPAARIN
DERII ESU SUPAARIN
Application Number:
JP36049491A
Publication Date:
May 17, 1999
Filing Date:
December 27, 1991
Export Citation:
Assignee:
NAGAOKA KK
International Classes:
E21B43/00; B01D29/11; E21B43/08; (IPC1-7): E21B43/08
Attorney, Agent or Firm:
Toru Sakamoto (1 person outside)