000			01701nab a2200193 4500
005			20260525052838.0
008			260224s2016 xxu ing
041			_aInglés
100	1		_aRudnicki, Mark D. _955200
245	0	0	_aVariation of organic matter density with thermal maturity
260			_cene. 2016
270			_a03/03/2016 ; 03/03/2016
300			_a5 p. ; 17-22
520			_aTranscripción del resumen del autor: An estimate or measurement of organic matter density is required for converting between the weight percent of total organic carbon (TOC) and the volume percent of organic matter for wireline log calibration; it is therefore important to recognize when significant changes in organic matter density occur. A method is presented for calculating organic matter density from measurements of crushed-rock dry grain density and Soxhlet-extracted TOC. I have investigated the thermal evolution of organic matter by tracking changes in the intrinsic density of organic matter as a function of thermal maturity. Organic matter density shows two step increases that correspond to the generation of liquid hydrocarbons in the oil window (up to ~1.2% vitrinite reflectance [Ro]) and the conversion of organic matter to graphitelike carbon (more correctly, "turbostratic carbon" at high thermal maturity (>4% Ro). Profound structural changes of organic matter may, in part, determine the maturity limits of source-rock tight liquids and shale-gas plays, particularly at high thermal maturity, where gas is hosted within the organic matter-hosted pore system.
581			_a1
773	0		_tAAPG Bulletin _g100
942			_cARTICULO _2ddc
999			_c189466 _d189466