Heating An Organic-Rich Rock Formation In Situ To Produce Products With Improved Properties

An in situ method of producing hydrocarbon fluids from an organic-rich rock formation, comprising:

• a) heating in situ a section of an organic-rich rock formation containing formation hydrocarbons, the section of the organic-rich rock formation having a lithostatic stress;
• b) pyrolyzing at least a portion of the formation hydrocarbons thereby forming a hydrocarbon fluid;
• and
• c) producing the hydrocarbon fluid from the organic-rich rock formation, the produced hydrocarbon fluid comprising a condensable hydrocarbon portion, the condensable hydrocarbon portion having:
• i) one or more of a n-C6 to benzene weight ratio less than 35.0, a n-C7 to toluene weight ratio less than 7.0, a n-C8 to ethylbenzene weight ratio less than 16.0, a n-C8 to ortho-xylene weight ratio less than 7.0, a n-C8 to meta-xylene weight ratio less than 1.9, a n-C9 to 1-ethyl-3-methylbenzene weight ratio less than 8.2, a n-C9 to 1-ethyl-4-methylbenzene weight ratio less than 4.4, a n-C9 to 1,2,4-trimethylbenzene weight ratio less than 2.7, a n-C10 to 1-ethyl-2,3-dimethylbenzene weight ratio less than 13.5, a n-C10 to tetralin weight ratio less than 25.0, a n-C12 to 2-methylnaphthalene weight ratio less than 4.9, and a n-C12 to 1-methylnaphthalene weight ratio less than 6.9;
• ii) one or more of a n-C9 to IP-9 weight ratio greater than 2.4, a n-C10 to IP-10 weight ratio greater than 1.4, a n-C11 to IP-11 weight ratio greater than 1.0, a n-C13 to IP-13 weight ratio greater than 1.1, a n-C14 to IP-14 weight ratio greater than 1.1, a n-C15 to IP-15 weight ratio greater than 1.0, a n-C16 to IP-16 weight ratio greater than 0.8, a n-C18 to IP-18 weight ratio greater than 1.0, and a n-C19 to pristane weight ratio greater than 1.6;
• iii) one or more of a n-C7 to cis 1,3-dimethyl cyclopentane weight ratio less than 13.1, a n-C7 to trans 1,3-dimethyl cyclopentane weight ratio less than 14.9, a n-C7 to trans 1,2-dimethyl cyclopentane weight ratio less than 7.0, a n-C7 to methyl cyclohexane weight ratio less than 5.2, a n-C7 to ethyl cyclopentane weight ratio less than 11.3, a n-C8 to 1,1-dimethyl cyclohexane weight ratio less than 16.0, a n-C8 to trans 1,2-dimethyl cyclohexane weight ratio less than 17.5, and a n-C8 to ethyl cyclohexane weight ratio less than 12.3;
• iv) one or more of a total C10 to total C20 weight ratio greater than 2.8, a total C11 to total C20 weight ratio greater than 2.3, a total C12 to total C20 weight ratio greater than 2.3, a total C13 to total C20 weight ratio greater than 2.9, a total C14 to total C20 weight ratio greater than 2.2, a total C15 to total C20 weight ratio greater than 2.2, and a total C16 to total C20 weight ratio greater than 1.6;
• v) one or more of a total C10 to total C25 weight ratio greater than 7.5, a total C11 to total C25 weight ratio greater than 6.5, a total C12 to total C25 weight ratio greater than 6.5, a total C13 to total C25 weight ratio greater than 8.0, a total C14 to total C25 weight ratio greater than 6.0, a total C15 to total C25 weight ratio greater than 6.0, a total C16 to total C25 weight ratio greater than 4.5, a total C17 to total C25 weight ratio greater than 4.8, and a total C18 to total C25 weight ratio greater than 4.5;
• vi) one or more of a total C7 to total C29 weight ratio greater than 3.5, a total C8 to total C29 weight ratio greater than 9.0, a total C9 to total C29 weight ratio greater than 12.0, a total C10 to total C29 weight ratio greater than 15.0, a total C11 to total C29 weight ratio greater than 13.0, a total C12 to total C29 weight ratio greater than 12.5, a total C13 to total C29 weight ratio greater than 16.0, a total C14 to total C29 weight ratio greater than 12.0, a total C15 to total C29 weight ratio greater than 12.0, a total C16 to total C29 weight ratio greater than 9.0, a total C17 to total C29 weight ratio greater than 10.0, a total C18 to total C29 weight ratio greater than 8.8, a total C19 to total C29 weight ratio greater than 7.0, a total C20 to total C29 weight ratio greater than 6.0, a total C21 to total C29 weight ratio greater than 5.5, and a total C22 to total C29 weight ratio greater than 4.2;
• vii) one or more of a normal-C7 to normal-C20 weight ratio greater than 0.9, a normal-C8 to normal-C20 weight ratio greater than 2.0, a normal-C9 to normal-C20 weight ratio greater than 1.9, a normal-C10 to normal-C20 weight ratio greater than 2.2, a normal-C11 to normal-C20 weight ratio greater than 1.9, a normal-C12 to normal-C20 weight ratio greater than 1.9, a normal-C13 to normal-C20 weight ratio greater than 2.3, a normal-C14 to normal-C20 weight ratio greater than 1.8, a normal-C15 to normal-C20 weight ratio greater than 1.8, and normal-C16 to normal-C20 weight ratio greater than 1.3;
• viii) one or more of a normal-C10 to normal-C25 weight ratio greater than 4.4, a normal-C11 to normal-C25 weight ratio greater than 3.8, a normal-C12 to normal-C25 weight ratio greater than 3.7, a normal-C13 to normal-C25 weight ratio greater than 4.7, a normal-C14 to normal-C25 weight ratio greater than 3.7, a normal-C15 to normal-C25 weight ratio greater than 3.7, a normal-C16 to normal-C25 weight ratio greater than 2.5, a normal-C17 to normal-C25 weight ratio greater than 3.0, and a normal-C18 to normal-C25 weight ratio greater than 3.4;
• ix) one or more of a normal-C7 to normal-C29 weight ratio greater than 18.0, a normal-C8 to normal-C29 weight ratio greater than 16.0, a normal-C9 to normal-C29 weight ratio greater than 14.0, a normal-C10 to normal-C29 weight ratio greater than 14.0, a normal-C11 to normal-C29 weight ratio greater than 13.0, a normal-C12 to normal-C29 weight ratio greater than 11.0, a normal-C13 to normal-C29 weight ratio greater than 10.0, a normal-C14 to normal-C29 weight ratio greater than 9.0, a normal-C15 to normal-C29 weight ratio greater than 8.0, a normal-C16 to normal-C29 weight ratio greater than 8.0, a normal-C17 to normal-C29 weight ratio greater than 6.0, a normal-C18 to normal-C29 weight ratio greater than 6.0, a normal-C19 to normal-C29 weight ratio greater than 5.0, a normal-C20 to normal-C29 weight ratio greater than 4.0, a normal-C21 to normal-C29 weight ratio greater than 3.6, and a normal-C22 to normal-C29 weight ratio greater than 2.8;
• or
• x) one or more of a normal-C10 to total C10 weight ratio less than 0.31, a normal-C11 to total C11 weight ratio less than 0.32, a normal-C12 to total C12 weight ratio less than 0.29, a normal-C13 to total C13 weight ratio less than 0.28, a normal-C14 to total C14 weight ratio less than 0.31, a normal-C15 to total C15 weight ratio less than 0.27, a normal-C16 to total C16 weight ratio less than 0.31, a normal-C17 to total C17 weight ratio less than 0.31, a normal-C18 to total C18 weight ratio less than 0.37, normal-C19 to total C19 weight ratio less than 0.37, a normal-C20 to total C20 weight ratio less than 0.37, a normal-C21 to total C21 weight ratio less than 0.37, a normal-C22 to total C22 weight ratio less than 0.38, normal-C23 to total C23 weight ratio less than 0.43, a normal-C24 to total C24 weight ratio less than 0.48, and a normal-C25 to total C25 weight ratio less than 0.53.