Using <sup>13</sup>C CP MAS TOSS DD NMR, some rules governing the variations of structureparameter and fractional contents for various aliphatic carbon in the mudstone kerogensburied in different depths in...Using <sup>13</sup>C CP MAS TOSS DD NMR, some rules governing the variations of structureparameter and fractional contents for various aliphatic carbon in the mudstone kerogensburied in different depths in China are first reported in this paper, and the preliminarystudies on their natural evolution as well for the formation of oil and gas have been made.The influence of T<sub>CP</sub>, T<sub>CH</sub>, f<sub>rsc</sub> on quantity measurement of CP in kerogens is discussed.展开更多
Dipolar dephasing (D. D.) technique has some advantages in studying the structure of coal and kerogen. The proportion of non-protonated aromatic carbon or non-protonated aliphatic carbon in total aromatic carbon or al...Dipolar dephasing (D. D.) technique has some advantages in studying the structure of coal and kerogen. The proportion of non-protonated aromatic carbon or non-protonated aliphatic carbon in total aromatic carbon or aliphatic carbon can be calculated by a series of experiments with different T_D time. But it takes too long a time. A rapid estimation way展开更多
文摘Using <sup>13</sup>C CP MAS TOSS DD NMR, some rules governing the variations of structureparameter and fractional contents for various aliphatic carbon in the mudstone kerogensburied in different depths in China are first reported in this paper, and the preliminarystudies on their natural evolution as well for the formation of oil and gas have been made.The influence of T<sub>CP</sub>, T<sub>CH</sub>, f<sub>rsc</sub> on quantity measurement of CP in kerogens is discussed.
文摘Dipolar dephasing (D. D.) technique has some advantages in studying the structure of coal and kerogen. The proportion of non-protonated aromatic carbon or non-protonated aliphatic carbon in total aromatic carbon or aliphatic carbon can be calculated by a series of experiments with different T_D time. But it takes too long a time. A rapid estimation way