摘要:
Methods and systems for characterizing a wellbore depth interval from rock fragments, including a method that includes converting measurements of a bulk rock fragment sample and of individual rock fragment samples to a concentration percent, computing a normalization deviation for each of the individual rock fragment samples relative to the bulk rock fragment sample (said normalization deviation being derived from the concentration percent of the bulk and individual rock fragment samples) and ranking the individual rock fragment samples based on a corresponding normalization deviation. The method further includes selecting one or more individual rock fragment samples based on a corresponding ranking, characterizing the properties of the wellbore depth interval from which the bulk and individual rock fragment samples originated using measured properties of at least some of the selected individual rock fragment samples and presenting to a user the characterized wellbore depth interval.
摘要:
A method for determining porosity associated with organic matter (PAOM) in a well or formation is provided. A system for performing the method is also provided.
摘要:
Methods and systems for conditioning expanded porosity, including a method that includes creating a disconnected pore structure by reducing the pore sizes of a rock sample's scanned image, identifying expanded pores within the rock sample and generating an expanded pore image from the expanded pores. The method further includes combining the expanded pore image with the scanned image to create an expansion mask, generating a grain conditioning volume based on at least one unexpanded region of the rock sample, combining the grain conditioning volume with the expansion mask to generate a fill volume image, combining the fill volume image with the scanned image to create an unexpanded volume image, and generating and presenting to a user a formation log using a model generated based upon the unexpanded volume image.
摘要:
Methods and systems for cuttings-based well logging, including a method that includes converting measurements of cuttings samples from one or more depth intervals of a wellbore to a concentration percent of one or more elements, determining a one or more minerals of the cuttings samples from the concentration percent and building a mineralogy model for the cuttings sample based at least in part on a gravimetric conversion of the concentration percent of at least some of the one or more elements to a concentration percent of the one or more minerals. The method further includes normalizing the concentration percent of the one or more minerals, computing a photo-electric absorption factor (PEF) of the cuttings samples for each of the one or more depth intervals, and presenting to a user a log of the computed PEF as a function of wellbore depth.
摘要:
A method for estimating properties of porous media, such as fine pore or tight rocks, is provided. The method comprises digital image scanning of sequential sub-samples of porous media at progressively higher resolution to systematically identify sub-sections of interest within the original sample and then estimate properties of the porous media. The resulting properties of the porous media then can be optionally upscaled to further estimate the properties of larger volumes of the porous media such as rock facies or subterranean reservoirs. A system operable for conducting the method also is provided.
摘要:
A method which allows for determining geochemistry with spatial resolution of geological materials or other materials is provided. The method can provide a non-bulk method of characterizing the geochemistry of a sample with spatial resolution. A system for performing the method also is provided.
摘要:
The present invention relates to a method for displaying two-dimensional geological image data in log format and the displayed image products thereof. The present invention can provide a concatenated display format for two-dimensional image data captured for different planar slices of a geological sample. The present method provides an enhanced format modality for presentation of such image data of a geological sample as a continuous presentation for the slices in the sequence.
摘要:
A method is provided to allow characterization of rock or other types of samples using a sliver that is prepared to have a sample and optionally a plurality of thin discrete reference objects encapsulated by hardened encapsulant that surrounds the peripheral edges of the sample and any reference objects. Systems for performing the methods are also provided. An x-ray scannable sliver also is provided as a single unit that has a thin discrete sample and a plurality of thin discrete reference objects encapsulated by hardened encapsulant that encases the peripheral edges of the sample and reference objects.
摘要:
A method for combining nuclear magnetic resonance (NMR) analysis and digital rock physics (DRP) analysis based on drilling cuttings or other rock samples for improved downhole nuclear magnetic resonance validation and characterization. A system for performing the method also is provided.