公开(公告)号：US10934812B2

公开(公告)日：2021-03-02

申请号：US15541320

申请日：2015-01-30

Applicant: LANDMARK GRAPHICS CORPORATION

Inventor： Joe Lynch ,  Travis Ramsay

IPC: E21B41/00 ,  G06F30/20 ,  G05B17/02 ,  E21B43/00 ,  E21B47/07 ,  E21B47/06 ,  E21B49/00 ,  E21B49/08

Abstract: Method and system for optimizing production from an oil and gas reservoir includes selecting a geocellular grid representing at least one property of the reservoir, defining a data range for the property that reflects uncertainty regarding which values may be used for the property, defining a first reservoir simulation model, simulating production from the reservoir with the model using the at least one property, comparing the output of the simulated production from the reservoir with a predetermined criteria based on historical data, and modifying the property to a different value within the data range for the property if the predetermined historical criteria is not met. These steps may be repeated for at least two values for the property within the data range. The above may be repeated for a second reservoir model and the outputs of the simulated production for the models may then be ranked according to predefined criteria.

公开(公告)号：US20160245950A1

公开(公告)日：2016-08-25

申请号：US14909128

申请日：2014-10-14

Applicant: LANDMARK GRAPHICS CORPORATION

Inventor： Travis Ramsay

IPC: G01V99/00 ,  G06T17/20 ,  G06T17/05 ,  G01N15/08

CPC classification number: G01V99/005 ,  E21B43/00 ,  G01N15/088 ,  G06T17/05 ,  G06T17/20

Abstract: Method for determining a subset volume in a 3D geocellular model of an oil and gas reservoir includes creating a 3D geocellular grid of the reservoir, defining a thick cross section for an area of interest within the 3D geocellular grid, iteratively increasing the volume of the thick cross section by a predetermined number of cells on each side, moving the thick cross section throughout the 3D geocellular grid, and performing a representative elemental volume (REV) analysis based on porosity for the resulting thick cross section. One embodiments allow incorporating REV analysis to determine a subset reservoir model volume which is smaller than the full field model but representative of the petrophysical property distribution in the full field model. This is done so that subset models act as theoretical proxies to the full field models and allow more detailed analysis before building the full field model.

Abstract translation: 用于确定油气储层的3D地质细胞模型中子集体积的方法包括创建储层的3D地球细胞网格，为3D地球细胞网格内的感兴趣区域定义厚的横截面，迭代地增加厚的 通过每侧的预定数量的单元的横截面，移动整个3D多孔网格中的厚横截面，并且基于所得厚横截面的孔隙度执行代表性单元体积（REV）分析。 一个实施例允许并入REV分析以确定小于全场模型但代表全场模型中的岩石物理性质分布的子集储存模型体积。 这样做，使得子集模型充当全场模型的理论代理，并在构建全场模型之前进行更详细的分析。