Method and apparatus for the installation and modification of oil well evacuation systems
US4683946A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 12, 1985 |
| Grant date | Aug 4, 1987 |
| Priority date | — |
| Expiry date | Nov 12, 2005 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B37/02
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A self contained vehicle is disclosed for the installation of a endless belt type oil well evacuation system, and for the modification of previously installed systems. The vehicle is provided with lifting means and rotational supply means for the endless belt in order to facilitate the feeding out and taking in of the belt material. The rotational supply means is provided with an automatic tension adjustment mechanism to avoid excess slack in handling the endless belt. A transverse adjustment mechanism is also provided to allow the endless belt to be lined up with the well head. Also disclosed is a drive unit to provide means for holding and driving the endless belt while installing or modifying the evacuation system. The belt is provided with a number of cups or transport units which are essentially three sided. One side of the cup is preferably soft and pliable in order to facilitate the evacuation of the cup. A well head station is disclosed which provides improved evacuation of the cups which, in turn, provide for the evacuation of the well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.