Patent ID: 8110091

Claim:
A process for the treatment of petroleum feedstock, at least 80% by weight of which boils above 340° C. and which comprises at least 0.05% by weight of sulphur, to produce at least one gas oil cut with a sulphur content of at most 10 ppm by weight, said process comprising: a) subjecting said feedstock to mild hydrocracking in a fixed bed of at least one catalyst at a temperature of between 300 and 500° C., a pressure of between 2 MPa and 10 MPa, and an hourly space velocity of between 0.1 h −1 and 10 h −1 , and in the presence of 100 to 5000 Nm 3 of hydrogen/m 3 of feedstock, to provide a net conversion to products boiling below 360° C. of between 10 and 50% by weight, b) separating effluent resulting from a) to obtain a gas comprising hydrogen, hydrogen sulphide formed in a), at least one distillate cut including a gas oil fraction, and a fraction which is heavier than gas oil, c) hydrotreating at least a portion of said at least one distillate cut including the gas oil fraction obtained in b) as a mixture with a feedstock resulting from a crude or refined renewable source, by contacting said mixture with at least one catalyst at a temperature of between 200° C. and 310° C., a pressure of between 2 and 10 MPa, and an hourly space velocity of between 0.1 and 10 h −1 , and in the presence of 200 to 5000 Nm 3 of hydrogen/m 3 of feedstock, d) separating effluent obtained from c) to obtain hydrogen, gases formed in c), and said at least one gas oil cut.