Changes

===Step 1. Basic rock description===

===Step 1. Basic rock description===

The geologist first collects data relating to the relative abundance of diagenetic components recognizable at the magnification levels of a binocular microscope or handlens. This evaluation may be conducted simultaneously with the rock description step of depositional model construction. The most useful data are derived from slabbed full diameter cores, but recourse to cuttings and sidewall cores is necessary where such cores are not available. In addition to describing the slabbed core, horizontal core plugs used for core analysis measurements should also be described. Recent advances in the methodology of cuttings analysis involve visual aids such as cuttings comparators, low magnification (20&times;) photographs of cuttings samples, thin section photomicrographs, and scanning electron microscope (SEM) micrographs of rock chips and pore casts. These allow more extensive utilization of these samples for rock characterization.<ref name=pt06r131>Sneider, R. M., King, H. R., Hawkes, H. E., Davis, T. B., 1983, [https://www.onepetro.org/journal-paper/SPE-10072-PA Methods for detection and characterization of reservoir rock, Deep Basin gas area, western Canada]: Journal of Petroleum Technology, Sept., p. 1725–1734.</ref>

The geologist first collects data relating to the relative abundance of diagenetic components recognizable at the magnification levels of a binocular microscope or handlens. This evaluation may be conducted simultaneously with the rock description step of depositional model construction. The most useful data are derived from slabbed full diameter cores, but recourse to cuttings and sidewall cores is necessary where such cores are not available. In addition to describing the slabbed core, horizontal core plugs used for core analysis measurements should also be described. Recent advances in the methodology of cuttings analysis involve visual aids such as cuttings comparators, low magnification (20&times;) photographs of cuttings samples, thin section photomicrographs, and scanning electron microscope (SEM) micrographs of rock chips and pore casts. These allow more extensive utilization of these samples for rock characterization.<ref name=pt06r131>Sneider, R. M., H. R. King, H. E. Hawkes, and T. B. Davis, 1983, [https://www.onepetro.org/journal-paper/SPE-10072-PA Methods for detection and characterization of reservoir rock, Deep Basin gas area, western Canada]: Journal of Petroleum Technology, Sept., p. 1725–1734.</ref>

===Step 2. Quantitative analysis===

===Step 2. Quantitative analysis===