4 results about "Petroleum system" patented technology

The present invention relates to a method for cleaning rock samples from petroleum systems based on the use of nanofluids, which is able to significantly accelerate the process. The developed method combines the solubilization potential of nanofluids for oil under the temporary action of an ultrasound system, which is faster and more effective than the traditionally used distillation methods described in the prior art. The adopted process reduces the time required for the removal of oil and salts (a key step in the characterization process of rock samples, which usually takes 120 to 365 days) to 3 to 7 days, using water-based nanofluids of low toxicity that do not alter the properties of the rock.

The present invention relates to a method for calculating the cover effect in the modeling of petroleum systems, comprising: obtaining input lithospheric and sedimentary data; discretizing the model differently in the sedimentary and lithospheric domains; starting the calculation of the cover effect; verifying whether the deposition time corresponding to each sedimentary layer is greater than the present time and whether the basin age is greater than the deposition time corresponding to each sedimentary layer, by refraining from carrying out the method;the verification of whether the deposition time corresponding to each sedimentary layer is less than or equal to the present time and whether the age of the basin is less than or equal to the deposition time corresponding to each sedimentary layer and the verification of whether it is in the collapse period, in which: if it is in the collapse period, the calculation of the collapse; if it is not in the collapse period or if it is after the collapse calculation stage, the calculation of the sedimentation; in the collapse period, the calculation of the advective vertical displacement velocity due to lithospheric thinning for each XY coordinate; the calculation of the fluid flux; the use of finite elements to perform calculations at each instant in time; the performance of the addition of the thermal effect of the lithospheric and sedimentary domains at each time stage.

The invention relates to a prediction method for an oil gas favorable area of a continental freshwater lake basin in a low exploration area, and belongs to the technical field of oil gas exploration and development. The method comprises the following steps: firstly, carrying out oil source comparison on an independent oil-gas-containing system found in a continental freshwater lake basin in a low exploration area so as to determine a hydrocarbon generation lower limit value of an effective hydrocarbon source rock; then according to test analysis of a single well and a region, a development layer section and lithology of the effective hydrocarbon source rock are determined, and then plane distribution characteristics such as the thickness, the abundance and the thermal evolution degree of the effective hydrocarbon source rock are depicted; and finally, according to superposition of three elements of abundance, thickness and thermal evolution degree of the effective hydrocarbon source rocks, determining a plane distribution range of the effective hydrocarbon source rocks, and the distribution range is a favorable distribution range of the oil-gas low exploration area.

One objective of the present invention is to provide a miniaturized chromatographic method for the selective extraction of polar compounds from crude oils, which is faster and more economical in terms of sample consumption, solvent volume, and waste generation, without compromising the chemical signature of the sample. Specifically, the method employed was solid-phase extraction (SPE), in online and offline modes, for the prospecting of polar compounds from crude oils, together with H-MPLC, in order to support a greater understanding of petroleum systems through the development of faster, more selective, economical, and environmentally more sustainable analytical and chromatographic methods. Furthermore, the invention also provides to describe an automated multidimensional solid-phase extraction (SPE) chromatographic system, which is applied in said method, as well as to describe some uses of said method.