35 results about "Conditional simulation" patented technology

The invention relates to a method of performing an oilfield operation of an oilfield having at least one wellsite, each wellsite having a wellbore penetrating a subterranean formation for extracting fluid from an underground reservoir therein. The method includes determining a time-step for simulating the reservoir, the reservoir being represented as a plurality of gridded cells and being modeled as a multi-phase system using a plurality of partial differential equations, calculating a plurality of Courant-Friedrichs-Lewy (CFL) conditions of the reservoir model corresponding to the time-step, the plurality of CFL conditions comprising a temperature CFL condition, a composition CFL condition, and a saturation CFL condition, simulating a first cell of the plurality of gridded cells with an Implicit Pressure, Explicit Saturations (IMPES) system, and simulating a second cell of the plurality of gridded cells with a Fully Implicit Method (FIM) system.

The invention provides a coal rock three-dimensional strain field visualization system and method under a complex geological structure. The system comprises a stress condition simulation system and astrain monitoring system. The stress condition simulation system comprises an analog simulation experiment frame, a loading system and a circular slideway. The method comprises the steps of preparinga 3D printing wire rod, printing a strain visualization similar model, simulating a stratum inclination angle and a gas-containing condition, applying a stress field, recording a micro-capsule ruptureand dyeing condition in the model and the like. The system can realize tracking of generation and development of cracks in a complex geological condition analog simulation model, and track three-dimensional movement of internal ink dots to draw a displacement field four-dimensional image.

Systems and methods for updating a property map during conditional simulation or unconditional simulation using interactive azimuth guidelines, well data and / or variogram parameters.

The invention provides a coal rock three-dimensional strain field visualization system and method under mining influence. The system comprises a stress condition simulation system and a strain monitoring system. The stress condition simulation system comprises an analog simulation experiment frame, a loading system and a circular slideway. The method comprises the steps of preparing a 3D printingwire rod, printing a strain visualization similar model, simulating a stratum inclination angle and a gas-containing condition, applying a stress field, recording a micro-capsule rupture and dyeing condition in the model and the like. The system can realize tracking of generation and development of cracks in a complex geological condition analog simulation model, and track three-dimensional movement of internal ink dots to draw a displacement field four-dimensional image.

The invention relates to a measurement and calculation method for a soil infiltration parameter of a field scale. The method comprises the steps of performing a K-S normality test on soil infiltrationparameter actual measurement data of each test point; obtaining soil infiltration parameter theoretical data obeying normal distribution; calculating a test variation function of the soil infiltration parameter theoretical data, and performing fitting on the test variation function by using a theoretical variation function model to obtain a theoretical semivariance function of the soil infiltration parameter; according to the theoretical semivariance function and a statistical eigenvalue, calculating a non-conditional simulation value Z*s of the soil infiltration parameter and a non-conditional simulation value Zs of the soil infiltration parameter of an untested position of a to-be-tested region; performing Kriging interpolation on the soil infiltration parameter actual measurement dataand the non-conditional simulation value Z*s of the soil infiltration parameter to obtain data Z*ok and Z*sok; and according to the non-conditional simulation value Zs and the data Z*ok and Z*sok, calculating a soil infiltration parameter value of the untested position of the to-be-tested region. According to the method, the technical support can be provided for optimizing ground irrigation systemdesign and improving field irrigation management level.

The invention provides a soil heavy metal risk prediction method. Based on a sequential condition simulation method, the contents of various heavy metals in the soil in a target area can be estimated,and a visualized risk map of heavy metals in the soil is generated by integrating various heavy metal contents based on a Hakanson potential ecological risk index method. Compared with a traditionalKriging interpolation method, the sequential condition simulation method can better reflect the uncertainty of heavy metal distribution, overcomes the smoothing effect of the traditional Kriging interpolation method, and has better predictability; the Hakanson potential ecological risk index method can scientifically synthesize various soil heavy metal contents and obtains the more accurate assessment risk; the method is relatively intuitive to observe high-risk areas from the visible soil heavy metal risk map, makes preventive measures in time, and has good practicability.

The invention method of forming and detecting a supercooled water droplet used in a ground ice-formation condition simulation system, and the supercooled water droplet is formed by water mist sprayed by an atomizing device. The method comprises the following steps of initially determining water supply temperature and gas supply temperature of the atomizing device, and starting the atomizing device so as to spray the water mist; after the atomizing device works stably, placing a ground target simulation device at a test target position and / or a place close to the test target position, wherein the ground target simulation device comprises at least one simulation target, and the simulation target comprises a test surface facing to the water mist; adjusting the gas supply temperature and / or the water supply temperature according to a freezing state of the water mist deposited the test surface of the ground target simulation target on the test target position and / or the place close to the test target position, so as to enable the water droplet of the water mist at the target simulation target to just reach the supercooled water droplet state of the test requirements. The invention further provides a test method of the supercooled water droplet used in the method of forming the supercooled water droplet, and the ground target simulation device used in the test method.