Well pipe

US6352108B1 · kind B1 · utility

Assignee

• Rheinbraun Aktiengesellschaft · DE

Inventors

• Wilhelm Meyer · Krefeld, DE
• Thomas D. Bloomfield · Bleckede, DE
• Willi Keul · Kerpen, DE

Key dates

• Filing date: Nov 9, 1999
• Grant date: Mar 5, 2002
• Expiry date: Nov 9, 2019

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21B43/082
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

The invention is a well pipe with longitudinal rods arranged in intervals in the pipe wall over the whole circumference. It is characterized by the fact that the well pipe is made of polymer concrete, and of an additional layer of packed gravel functioning as a filter if designed as a well filter pipe, and that the rods are glass fiber rods which transfer axial tensile load.