Patent application number | Description | Published |
20090070086 | METHOD FOR UPDATING A GEOLOGICAL MODEL USING DYNAMIC DATA AND WELL TESTS - Method for optimizing the development of an underground reservoir, wherein a geological model is updated using dynamic data and well tests. | 03-12-2009 |
20100332205 | METHOD OF MODIFIED FACIES PROPORTIONS UPON HISTORY MATCHING OF A GEOLOGICAL MODEL - A method of modifying a geological model representative of an underground reservoir is disclosed which respects average proportions of the lithologic facies imposed by a production data calibration process which has application to petroleum reservoir development. A geographical zone Z is defined within the geological model and an average proportion in zone Z allowing the production data to be calibrated is determined for k facies, with an optimization process. The proportions of these facies are modified using a block indicator cokriging method constrained by the average proportions to be respected. A new geological model constrained by the modified facies proportions is simulated and the development of the underground medium is optimized by the simulated model. | 12-30-2010 |
20120191433 | METHOD FOR REAL-TIME RESERVOIR MODEL UPDATING FROM DYNAMIC DATA WHILE KEEPING THE COHERENCE THEREOF WITH STATIC OBSERVATIONS - The invention is a method for real-time updating of a geological model using dynamic data while maintaining the coherence thereof with static observations. An initial set of reservoir property maps, obtained from stochastic simulations of a random function, are available. Parameters providing new realizations of the random function when applied to the set are selected. New maps are created using initial values of the parameters. As soon as new dynamic data are available, the parameters are modified to reduce a difference between the simulated data for perturbed models and the measured data. Finally, the reservoir is developed using a modified development scheme to account for the deformed maps. | 07-26-2012 |
20130020131 | METHOD OF DEVELOPING A PETROLEUM RESERVOIR FROM A TECHNIQUE FOR SELECTING THE POSITIONS OF THE WELLS TO BE DRILLED - The invention is a method of developing a petroleum reservoir employing a technique for selection of the position of the wells to be drilled. A production indicator map is utilized comprising a set of cells each associated with a production indicator defining impact on fluid production of addition of a well in this cell. The production indicator map is constructed by selecting cells from among the set of cells of the map; determining production indicators in the selected cells; and interpolating the production indicators on the set of cells of the map, by an interpolation model accounting for a distance between the cell to be interpolated and the closest well to the cell to be interpolated. The position of the well to be drilled is defined by the cell where the production indicator is a maximum. | 01-24-2013 |
20130132055 | METHOD FOR OPTIMIZING THE DEVELOPMENT OF AN UNDERGROUND MEDIUM BY MEANS OF A RESERVOIR STUDY COMPRISING OPTIMIZED UPSCALING - A method for optimizing the development of a fluid reservoir by means of an accelerated reservoir study. A geological model is constructed. A reservoir model is then constructed by upscaling the geological model. The links between cells of the geological model and a cell of the reservoir model where they are contained are determined and stored. Flow simulations are carried out by computer-implemented reservoir simulator, the reservoir model and the links. The above stages are then repeated without repeating the link determination, by modifying parameters of the reservoir study to optimize the development scheme. Finally, the reservoir is developed according to this optimized development scheme. | 05-23-2013 |
20130218537 | METHOD OF DEVELOPING A RESERVOIR FROM A TECHNIQUE OF SELECTING THE POSITIONS OF WELLS TO BE DRILLED - The invention relates to a method of developing an underground reservoir, notably a petroleum reservoir, traversed by at least a first well from which a fluid is produced, wherein a position of at least a second well to be drilled is determined by means of a production indicator map comprising a set of cells, each cell being associated with a production indicator defining an impact, on the fluid production, of a well addition in this cell. The method comprises constructing the map by:
| 08-22-2013 |
20130346049 | Method for exploiting a geological reservoir on the basis of a reservoir model matched by means of multiple-scale parameterization - The invention relates to a method for exploiting a geological reservoir which may be a reservoir storing gas (for example CO | 12-26-2013 |
20140236549 | Method for exploiting a geological reservoir by means of a matched reservoir model consistent with the flow properties - The invention relates to a method for exploiting (EX) a geological reservoir according to an exploitation scheme (SE) defined on the basis of a matched reservoir model (CAL) with static data and dynamic data. For this method, a first reservoir model (MR) displaying a certain consistency with respect to the flow properties of the medium is preselected. This preselected model (MR) is then used as starting point for the history matching process (CAL). | 08-21-2014 |
20140288900 | METHOD FOR EXPLOITING A GEOLOGICAL RESERVOIR BY MEANS OF A RESERVOIR MODEL CONSISTENT WITH A GEOLOGICAL MODEL BY THE CHOICE OF AN UPSCALING METHOD - The invention IS a method for exploiting (EXP) a geological reservoir by using a reservoir model consistent with a geological model (MG). Reservoir models (MRn) are constructed by using different upscaling methods. By utilization of a connectivity study, conducted on the basis of an algorithm resolving the shortest path (DIS) applied to the meshings, the main flowpaths are identified between the wells for the geological model (MG) and for the different reservoir models (MRn). The reservoir model (MR) for which the lengths of the main flowpaths between wells are closest to those obtained for the starting geological model is then selected. | 09-25-2014 |
Patent application number | Description | Published |
20100332205 | METHOD OF MODIFIED FACIES PROPORTIONS UPON HISTORY MATCHING OF A GEOLOGICAL MODEL - A method of modifying a geological model representative of an underground reservoir is disclosed which respects average proportions of the lithologic facies imposed by a production data calibration process which has application to petroleum reservoir development. A geographical zone Z is defined within the geological model and an average proportion in zone Z allowing the production data to be calibrated is determined for k facies, with an optimization process. The proportions of these facies are modified using a block indicator cokriging method constrained by the average proportions to be respected. A new geological model constrained by the modified facies proportions is simulated and the development of the underground medium is optimized by the simulated model. | 12-30-2010 |
20110125469 | METHOD OF DEVELOPING A PETROLEUM RESERVOIR BY RESERVOIR MODEL RECONSTRUCTION - A method of developing a petroleum reservoir according to a given development scheme, from a facies map representative of the reservoir. New measurements are taken in the reservoir to better characterize it. A geostatistical simulator is selected. A set of random numbers is then identified which are provided to the geostatistical simulator to provide a facies representation identical to the initial map by inverting a random number generation algorithm of the simulator. The map is then modified to account for the new measurements, by carrying out a geostatistical simulation constrained by the measurements, with the geostatistical simulator and the set of random numbers. Finally, the reservoir development scheme is modified by accounting for the modified map, and the reservoir is developed using the modified development scheme. | 05-26-2011 |
20110153285 | METHOD OF DEVELOPING A PETROLEUM RESERVOIR FROM A FACIES MAP CONSTRUCTION - A method of developing a petroleum reservoir, wherein a facies map representative of the reservoir is constructed from petrophysical property maps. A grid cell visiting order is defined by selecting the visiting order that first passes through the cells where the facies are the most discriminated. Then, in each cell i, according to the visiting order, and for various facies values k, the likelihood defined by the probability of obtaining in cell i the values of observed petrophysical properties is calculated, knowing that the facies in cell i is facies k, and knowing on the one hand already identified facies values V | 06-23-2011 |
20110308792 | METHOD FOR OPERATING AN OIL POOL BASED ON A RESERVOIR MODEL GRADUALLY DEFORMED BY MEANS OF COSIMULATIONS - A method is disclosed for operating an oil pool based on a reservoir model gradually deformed by means of cosimulations. A map of a property of the pool is obtained by a stochastic simulation of a first random function. A correlation coefficient is chosen between the first random function and a second random function with an identical mean and covariance. The map is modified by a cosimulation of the two random functions by using the correlation coefficient. The correlation coefficient is modified and the cosimulation step is reiterated to deform the map and minimize a matching objective function. Finally, the pool is operated by implementing an operating scheme accounting for the deformed map. | 12-22-2011 |