Chinese Springboard Drilling

Chinese Springboard Drilling

C025/4381 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 50.7MB

Downloadable file size: 7.6MB

Price image Pricing

Please login to use the price calculator


Credit: SHEILA TERRY/SCIENCE PHOTO LIBRARY

Caption: This type of percussion drilling rig was widely used throughout remote Chinese provinces to construct deep wells, mainly to obtain the supplies of brine from which to extract salt. Assisted by the springboard and manpower alone, the well was deepened by repeatedly impacting a heavy drill bit.Wells could be up to 1000 meters in depth and about 15cm in diameter. At a drilling rate of less than 50cm per 24 hours they could take up to three years to build. Today's cable tool percussion drilling rig is directly descended from the bamboo framework of the Chinese system.

Release details: Model release not required. Property release not required.

Keywords: bamboo, brine, cable tool, china, chinese, drill, drill bit, drilling rig, history of science, history of technology, percussion, percussion drilling, salt, springboard, springboard drilling, well

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.