Integrated process to convert crude oil into petrochemical products comprising crude oil distillation, hydrocracking and olefins synthesis, which process comprises subjecting a hydrocracker feed to hydrocracking to produce LPG and BTX and subjecting LPG produced in the process to olefins synthesis, wherein said hydrocracker feed comprises: one or more of naphtha, kerosene and gasoil produced by crude oil distillation in the process; and refinery unit-derived light-distillate and/or refinery unit-derived middle-distillate produced in the process, which process comprises: (a) subjecting crude oil to crude oil distillation to produce gases fraction, naphtha, kerosene, gasoil and resid; (b) subjecting resid to resid upgrading to produce LPG, light-distillate and middle-distillate; (c) subjecting middle-distillate produced by resid upgrading and one or more selected from the group consisting of kerosene and gasoil to aromatic ring opening to produce LPG and light-distillate; (d) subjecting light-distillate produced by resid upgrading, light-distillate produced by aromatic ring opening and naphtha to hydrocracking to produce LPG and BTX; and (e) subjecting LPG produced in the integrated process to gas separation for separating different compounds into separate streams, said streams comprising ethane, propane and butanes; and (f) subjecting said streams to olefins synthesis, wherein said olefins synthesis comprises dehydrogenation of propane and dehydrogenation of butane and a combined propane/butane dehydrogenation process. one or more of naphtha, kerosene and gasoil produced by crude oil distillation in the process; and refinery unit-derived light-distillate and/or refinery unit-derived middle-distillate produced in the process, which process comprises: (a) subjecting crude oil to crude oil distillation to produce gases fraction, naphtha, kerosene, gasoil and resid; (b) subjecting resid to resid upgrading to produce LPG, light-distillate and middle-distillate; (c) subjecting middle-distillate produced by resid upgrading and one or more selected from the group consisting of kerosene and gasoil to aromatic ring opening to produce LPG and light-distillate; (d) subjecting light-distillate produced by resid upgrading, light-distillate produced by aromatic ring opening and naphtha to hydrocracking to produce LPG and BTX; and (e) subjecting LPG produced in the integrated process to gas separation for separating different compounds into separate streams, said streams comprising ethane, propane and butanes; and (f) subjecting said streams to olefins synthesis, wherein said olefins synthesis comprises dehydrogenation of propane and dehydrogenation of butane and a combined propane/butane dehydrogenation process. (a) subjecting crude oil to crude oil distillation to produce gases fraction, naphtha, kerosene, gasoil and resid; (b) subjecting resid to resid upgrading to produce LPG, light-distillate and middle-distillate; (c) subjecting middle-distillate produced by resid upgrading and one or more selected from the group consisting of kerosene and gasoil to aromatic ring opening to produce LPG and light-distillate; (d) subjecting light-distillate produced by resid upgrading, light-distillate produced by aromatic ring opening and naphtha to hydrocracking to produce LPG and BTX; and (e) subjecting LPG produced in the integrated process to gas separation for separating different compounds into separate streams, said streams comprising ethane, propane and butanes; and (f) subjecting said streams to olefins synthesis, wherein said olefins synthesis comprises dehydrogenation of propane and dehydrogenation of butane and a combined propane/butane dehydrogenation process.