NOVELTY - Preparing hydrocarbon product (48) from gaseous feed of methane (30), involves: converting gaseous feed by partial oxidation into first mixture of hydrogen and carbon monoxide (32); converting liquid/solid biomass feed (35) by partial oxidation into hydrogen and carbon monoxide second mixture (37); increasing hydrogen content of second mixture to obtain hydrogen rich mixture (40); performing Fischer-Tropsch synthesis using first mixture as feed to obtain waxy paraffinic synthesis product (34); and performing hydroconversion steps on synthesis product to obtain hydrocarbon product.    USE - For preparing a hydrocarbon product (including naphtha, kerosene, gas oil, and/or base oil) from a gaseous feed comprising methane (claimed).    ADVANTAGE - The process avoids or at least limited, the recycle of the Fischer-Tropsch off-gas by using a biomass feed to prepare hydrogen. The more sustainable process with regard to carbon dioxide emissions is obtained because any carbon dioxide by-product obtained in the process to prepare hydrogen has a biomass source.    DETAILED DESCRIPTION - Preparing a hydrocarbon product (48) from a gaseous feed comprising methane (30) involves:    (A) converting the gaseous feed by partial oxidation into a first mixture of hydrogen and carbon monoxide (32);    (B) converting a liquid or solid biomass feed (35) by partial oxidation into a second mixture of hydrogen and carbon monoxide (37);    (C) increasing the hydrogen content of the second mixture to obtain a hydrogen rich mixture (40);    (D) performing a Fischer-Tropsch synthesis using the first mixture as feed to obtain a waxy paraffinic synthesis product (34); and    (E) performing at least one hydroconversion step on the waxy paraffinic synthesis product or part of the waxy paraffinic synthesis product to obtain the hydrocarbon product, where the hydrogen rich mixture is used as additional feed in step (D) and/or as reactant in step (E).    INDEPENDENT CLAIMS are included for the following:    (1) preparing (P1) a mixture of hydrogen and carbon monoxide from by partial oxidation by contacting an oxygen containing gas with the liquid or solid biomass feed in a burner of a pressurized and entrained gasification reactor and where the mixture of hydrogen and carbon monoxide thus obtained in the burner is reduced in temperature by direct contacting this mixture with liquid water thereby obtaining a second mixture having a content of water and a stream of used liquid water and where the minerals as present in the used liquid water are isolated and used as fertilizer or soil improver when growing a biomass source from which the biomass feed is obtained; and    (2) preparing a hydrogen rich mixture from a biomass feed by converting a liquid or solid biomass feed by partial oxidation into a mixture of hydrogen and carbon monoxide, where the partial oxidation is performed by contacting an oxygen containing gas with the liquid or solid biomass feed in a burner of a pressurized and entrained gasification reactor and where0 the second mixture thus obtained in the burner having a temperature of 1000-1800 degrees C is reduced in temperature to a temperature of 160-330 degrees C by direct contacting the second mixture with liquid water thereby obtaining a second mixture having a content of water and increasing the hydrogen content of the second mixture by performing at least one water gas shift reaction steps to obtain a hydrogen rich mixture.    DESCRIPTION OF DRAWING(S) - The figure shows a flow chart of the process for preparing hydrocarbon product from gaseous feed comprising methane.    gaseous feed comprising methane (30)    first mixture of hydrogen and carbon monoxide (32)    waxy paraffinic synthesis product (34)    liquid or solid biomass feed (35)    second mixture of hydrogen and carbon monoxide (37)    hydrogen rich mixture (40)    hydrocarbon product. (48)