| abstract |
The invention relates to a degradable tool for a drilling well or a component thereof. The instrument according to the invention comprises a cellulose derivative having an average molecular weight of from about 5000 g / mol to about 400,000 g / mol, consisting of a cellulose ester, a cellulose ether and any combination thereof, capable of degraded at least in an environment in the drilling well, thereby at least partially degrading the borehole tool or its component. |