An integrated hydrocracking process for production of olefinic and aromatic petrochemicals from a hydrocarbon feedstock comprising crude oil, the process comprising: treating the feedstock comprising crude oil and a residual liquid stream in a first hydrocracking zone in the presence of hydrogen under conditions effective to produce a first effluent having an increased hydrogen content; separating the first effluent into a LPG comprising stream and a liquid phase stream; separating said LPG comprising stream into one or more streams chosen from the group of a stream comprising hydrogen, a stream comprising methane, a stream comprising ethane, a stream comprising butanes, a stream comprising propane, a stream comprising C1-minus, a stream comprising C3-minus, a stream comprising C1-C2, a stream comprising C3-C4, a stream comprising C2-C3, a stream comprising C1-C3, a stream comprising C1-C4, a stream comprising C2-C4, a stream comprising C2-minus, a stream comprising C4-minus; further processing one or more of the streams thus obtained in a steam cracker unit and at least one unit chosen from the group of a butanes dehydrogenation unit, a propane dehydrogenation unit, a combined propane-butanes dehydrogenation unit, or a combination of units thereof to produce mixed product stream(s), wherein one or more streams chosen from the group of said stream comprising ethane, said stream comprising C1-C2 and said stream comprising C2-minus is fed to said steam cracker unit; feeding the mixed product stream(s) from said a steam cracker unit and at least one unit, chosen from the group of a butanes dehydrogenation unit, a propane dehydrogenation unit, a combined propane-butanes dehydrogenation unit, or a combination of units thereof to a second separation section; treating said liquid phase stream in a second hydrocracking zone in the presence of hydrogen under conditions effective to produce a second effluent having an increased hydrogen content; recovering from the second effluent from said second hydrocracking zone a BTXE comprising stream, a LPG comprising stream and said residual liquid stream; further comprising recycling said residual liquid stream from said second hydrocracking zone and/or said liquid phase stream to inlet of the first hydrocracking zone; separating the mixed product stream(s) for recovering olefins and aromatics. treating the feedstock comprising crude oil and a residual liquid stream in a first hydrocracking zone in the presence of hydrogen under conditions effective to produce a first effluent having an increased hydrogen content; separating the first effluent into a LPG comprising stream and a liquid phase stream; separating said LPG comprising stream into one or more streams chosen from the group of a stream comprising hydrogen, a stream comprising methane, a stream comprising ethane, a stream comprising butanes, a stream comprising propane, a stream comprising C1-minus, a stream comprising C3-minus, a stream comprising C1-C2, a stream comprising C3-C4, a stream comprising C2-C3, a stream comprising C1-C3, a stream comprising C1-C4, a stream comprising C2-C4, a stream comprising C2-minus, a stream comprising C4-minus; further processing one or more of the streams thus obtained in a steam cracker unit and at least one unit chosen from the group of a butanes dehydrogenation unit, a propane dehydrogenation unit, a combined propane-butanes dehydrogenation unit, or a combination of units thereof to produce mixed product stream(s), wherein one or more streams chosen from the group of said stream comprising ethane, said stream comprising C1-C2 and said stream comprising C2-minus is fed to said steam cracker unit; feeding the mixed product stream(s) from said a steam cracker unit and at least one unit, chosen from the group of a butanes dehydrogenation unit, a propane dehydrogenation unit, a combined propane-butanes dehydrogenation unit, or a combination of units thereof to a second separation section; treating said liquid phase stream in a second hydrocracking zone in the presence of hydrogen under conditions effective to produce a second effluent having an increased hydrogen content; recovering from the second effluent from said second hydrocracking zone a BTXE comprising stream, a LPG comprising stream and said residual liquid stream; further comprising recycling said residual liquid stream from said second hydrocracking zone and/or said liquid phase stream to inlet of the first hydrocracking zone; separating the mixed product stream(s) for recovering olefins and aromatics.