公开(公告)号：US07047165B2

公开(公告)日：2006-05-16

申请号：US09727452

申请日：2000-12-04

申请人： Sophie Balaven ,  Jean-Daniel Boissonnat ,  Chakib Bennis ,  Sylvain Sarda

发明人： Sophie Balaven ,  Jean-Daniel Boissonnat ,  Chakib Bennis ,  Sylvain Sarda

IPC分类号： G06F9/455

CPC分类号： G06T17/20 ,  G01V99/005

摘要： A method of generating a hybrid grid of a heterogeneous formation crossed by one or more geometric discontinuities such as, for example, an underground formation where one or more wells have been drilled, or a fractured formation, by combining structured grids and non-structured grids in order to carry out simulations in accordance with a defined numerical pattern is disclosed. Hybrid gridding is performed by associating a first structured grid (G1) for gridding of the heterogeneous medium considering discontinuities thereof with second structured, radial type grids (G2) for gridding of a zone around each pipe or well, which allows better consideration of constraints linked with flows in the zone. In order to connect the first grid of the medium and the second well grids, non-structured transition grids (G3) are interposed there between. A power diagram technique is used, which is particularly advantageous in that it allows appropriate connection of non-regular structured grids. An application is hydrocarbon reservoir simulation.

摘要翻译： 一种生成由一个或多个几何不连续性穿过的异质结构的混合网格的方法，所述几何不连续性例如通过组合结构化网格和非结构网格而形成一个或多个井或地层， 为了按照定义的数字模式进行仿真是公开的。 通过将考虑其不连续性的异质介质的网格化的第一结构网格（G 1）与用于网格化每个管道或井周围的区域的第二结构化的径向型网格（G 2）相关联来进行混合网格化，这允许更好地考虑 与区域流量有关的限制。 为了连接介质和第二井格栅的第一栅格，在其间插入非结构化的过渡栅格（G 3）。 使用功率图技术，这是特别有利的，因为它允许非规则结构网格的适当连接。 应用是油气藏模拟。

公开(公告)号：US6064944A

公开(公告)日：2000-05-16

申请号：US767

申请日：1997-12-30

申请人： Sylvain Sarda ,  Bernard Bourbiaux

发明人： Sylvain Sarda ,  Bernard Bourbiaux

IPC分类号： E21B49/00 ,  G06F19/00

CPC分类号： E21B49/00

摘要： A method of exploring a heterogeneous geological porous original medium, such as a reservoir crossed by an irregular network of fractures, by means of a transposed medium be equivalent to the original medium with respect to a determined type of physical transfer function known for the original medium. The method includes (a) analyzing the original medium to acquire data as to its physical characteristics; (b) forming an image of at least two dimensions of the original medium as an array of pixels, based on the acquired data; (c) associating with each pixel of the array an initial value for the physical transfer function, (d) assigning values for the physical transfer function at each pixel of the array, such as the minimum distance separating the pixel from the nearest fracture, by reference to values of the function assigned to neighboring pixels of the image, (e) determining a physical property of the transposed or equivalent medium by identifying a volume portion of the equivalent medium based on the physical transfer function for the corresponding volume portion of the original medium, and (f) physically exploring the original reservoir based on the determined physical property. The physical transfer function can represent variations between different parts of the original medium, for example distance or transmissivities or heat transfers, such as between a reservoir and a well crossing the reservoir, etc. The method can be applied to determine a transposed medium providing the same recovery of a fluid during a capillary imbibition process as the actual medium.

摘要翻译： 相对于原始介质已知的确定类型的物理传递函数，通过转置介质探索异质地质多孔原始介质（例如由不规则骨折网络交叉的储层）的方法等同于原始介质 。 该方法包括（a）分析原始介质以获取关于其物理特性的数据; （b）基于所获取的数据，将原始介质的至少二维的图像形成为像素阵列; （c）将阵列的每个像素与物理传递函数的初始值相关联，（d）为阵列的每个像素（诸如将像素与最近的断层分隔开的最小距离）分配给物理传递函数的值， 参考分配给图像的相邻像素的功能的值，（e）基于原始的相应体积部分的物理传递函数来识别等效介质的体积部分来确定转置的或等效的介质的物理属性 介质和（f）基于确定的物理性质物理探索原始储层。 物理传递函数可以表示原始介质的不同部分之间的变化，例如距离或透射率或热传递，例如在储存器和穿过储存器的井之间的等等。该方法可以应用于确定转置介质， 在作为实际介质的毛细管吸入过程中流体的相同回收。

公开(公告)号：US06922662B2

公开(公告)日：2005-07-26

申请号：US09860616

申请日：2001-05-21

申请人： Emmanuel Manceau ,  Sylvain Sarda ,  Luca Cosentino ,  Marie-Christine Cacas ,  Bernard Bourbiaux

发明人： Emmanuel Manceau ,  Sylvain Sarda ,  Luca Cosentino ,  Marie-Christine Cacas ,  Bernard Bourbiaux

IPC分类号： E21B49/00 ,  G01V11/00 ,  G06F7/48 ,  G06F17/10

CPC分类号： E21B49/00 ,  G01V11/00

摘要： A method for modelling flows in a fractured medium crossed by a network of fluid conducting objects of definite geometry but not homogenizable on the scale of each grid cell of the model (large fractures, sub-seismic faults for example, very permeable sedimentary layers, etc.) which has an application in the evaluation of hydrocarbon reservoirs is disclosed. The method allows simulation fluid of flows in a fractured porous geologic medium of known structure that is discretized with a grid and modelled by considering that each elementary volume of the fractured geologic medium is an equivalent fracture medium and matrix medium on the scale of each cell between which fluid exchanges are determined. The method determines exchanges between the matrix medium and the fracture medium, and modeles the transmissivities of the various cells crossed by each conducting object, so that the resulting transmissivity corresponds to the direct transmissivity along each conducting object. Explicit modelling of these objects, which is prohibitive on the scale of a field because of the very large number of cells involved and of the numerical constraints, is therefore unnecessary.

摘要翻译： 一种用于在由模型的每个网格单元的规模上的具有确定几何形状但不能均匀化的流体传导对象的网络交叉的断裂介质中的流动建模方法（大型断裂，亚地震断层，例如非常可渗透的沉积层等） 。）在油气藏评估中有应用。 该方法允许在具有已知结构的断裂多孔地质介质中的流动的模拟流体被离散化，并且通过考虑到断裂的地质介质的每个基本体积是等效的裂缝介质和每个单元的尺度上的基质介质 确定哪种流体交换。 该方法确定了矩阵介质与断裂介质之间的交换，并对每个导电物体交叉的各种单元的透射率进行建模，从而得到的透射率对应于每个导电物体的直接透射率。 因此，由于涉及的细胞数量和数值约束，这些对象的显式建模对于场的规模是禁止的，因此是不必要的。

公开(公告)号：US07565277B2

公开(公告)日：2009-07-21

申请号：US10390654

申请日：2003-03-19

申请人： Rémy Basquet ,  Laurent Jeannin ,  Bernard Bourbiaux ,  Sylvain Sarda

发明人： Rémy Basquet ,  Laurent Jeannin ,  Bernard Bourbiaux ,  Sylvain Sarda

IPC分类号： G06G7/58 ,  G01V1/40 ,  G01V3/18 ,  G01V5/04 ,  G01V9/00

CPC分类号： E21B49/00

摘要： A method is disclosed for modelling low or high compressibility fluid flows in a multilayer porous medium crossed by a network of fractures of given geometry, unevenly distributed in the medium, some of the fractures communicating with one another. Each fractured layer is defined by means of a grid pattern comprising fracture grid cells centered on nodes either at the fracture intersections or at the fracture ends. Each node is associated with a matrix block including all the points closer thereto than to neighboring nodes, and the local flows between each fracture grid cell and the associated matrix volume are calculated in a pseudosteady state. A modelling equation whose form is similar to the diffusion equation solved in conventional cases (low compressibility fluids) allows accounting for the compressibility of the fluids. The direct flows between the fracture grid cells and the direct flows between the matrix volumes through the common edges of the grid cells are determined, and the interactions between the pressure and flow rate variations that can be observed in at least one well through the medium are simulated.

摘要翻译： 公开了一种用于模拟由不均匀分布在介质中的一些由几何形状的骨折网络穿过的多层多孔介质中的低或高可压缩流体流的方法，其中一些裂缝彼此连通。 每个断裂层通过网格图案来定义，该网格图案包括以裂缝交叉点或断裂端处的节点为中心的裂缝网格单元。 每个节点与包括比相邻节点更接近的所有点的矩阵块相关联，并且在伪稳态下计算每个裂缝网格单元和相关联的矩阵体之间的局部流。 其形式与常规情况下解决的扩散方程（低压缩性流体）相似的建模方程可以说明流体的压缩性。 确定裂缝网格单元之间的直接流动和通过网格单元的公共边缘的矩阵体积之间的直接流动，并且可以在至少一个井中通过介质观察到的压力和流速变化之间的相互作用是 模拟。

公开(公告)号：US06907392B2

公开(公告)日：2005-06-14

申请号：US09725254

申请日：2000-11-29

申请人： Chakib Bennis ,  Sylvain Sarda ,  Eric Pain ,  Sophie Balaven

发明人： Chakib Bennis ,  Sylvain Sarda ,  Eric Pain ,  Sophie Balaven

IPC分类号： G06T17/20 ,  G06G7/57

CPC分类号： G06T17/20

摘要： A method of generating a hybrid grid allowing modelling of a heterogeneous formation crossed by one or more pipes such as, for example, an underground formation where one or more wells have been drilled, in order to form a representative model, for example of fluid flows in the formation in accordance with a defined numerical pattern is disclosed. The method comprises associating a first structured grid for gridding of the heterogeneous medium regarding discontinuities thereof with a second structured, radial type grid for gridding of a zone around each pipe or well, which allows better constraints linked with flows in the zone, and transition of non-structured grids that are interposed between the first grid and each second well grid. Various grids are combined, each with its own formation, representation and exploration methods, structured grids which are advantageous in facilitating control and comprehension of the reservoir images formed and more flexible non-structured grids for gridding of complex zones. An application is simulation of hydrocarbon reservoirs.

摘要翻译： 一种产生混合栅格的方法，允许对一个或多个管道例如地下地层（其中已经钻了一个或多个井）进行交叉的异质地层进行建模，以形成例如流体流动的代表性模型 在根据定义的数字模式的形成中被公开。 该方法包括将用于不连续性的异质介质网格化的第一结构化网格与用于网格化围绕每个管或井的区域的第二结构化的径向型网格相关联，这允许与该区域中的流动相关联的更好的约束，以及 介于第一格栅和每个第二井格之间的非规则格栅。 各种网格结合起来，每个都具有自己的形成，表示和探索方法，有利于有助于控制和理解形成的储层图像，并且更灵活的非网格化网格化复杂区域。 应用是油气藏的模拟。

公开(公告)号：US06842725B1

公开(公告)日：2005-01-11

申请号：US09455408

申请日：1999-12-06

申请人： Sylvain Sarda

发明人： Sylvain Sarda

IPC分类号： E21B49/00 ,  G01V11/00 ,  G06G7/48

CPC分类号： E21B49/00 ,  G01V11/00

摘要： A method is disclosed for modelling fluid flows in a fractured multilayer porous medium by accounting for the real geometry of the fracture network and the local exchanges between the porous matrix and the fractures at each node of the network, thus allowing simulation of the interactions between the pressure and flow rate variations in a well running across the medium. The method essentially comprises discretizing the fractured medium by means of a mesh pattern, with fracture meshes centered on nodes at the various intersections of the fractures with each node being associated with a matrix volume, and determination of the flows between each fracture mesh and the associated matrix volume in a pseudosteady state. The method can be applied in hydrocarbon production well testing.

摘要翻译： 公开了一种通过考虑断裂网络的实际几何形状和多孔基体与网络每个节点处的裂缝之间的局部交换来建立断裂多层多孔介质中的流体流动的方法，从而允许模拟 压力和流量变化在穿过介质的井中运行。 该方法基本上包括通过网格图案离散断裂的介质，断裂网格以骨折的各个交点处的节点为中心，每个节点与矩阵体积相关联，以及确定每个断裂网格和相关联的 在准稳态下的矩阵体积。 该方法可应用于油气生产井测试。

公开(公告)号：US6023656A

公开(公告)日：2000-02-08

申请号：US972

申请日：1997-12-30

申请人： Marie-Christine Cacas ,  Sylvain Sarda ,  Bernard Bourbiaux ,  Jean-Claude Sabathier

发明人： Marie-Christine Cacas ,  Sylvain Sarda ,  Bernard Bourbiaux ,  Jean-Claude Sabathier

IPC分类号： E21B49/00 ,  G06F19/00

CPC分类号： E21B49/00

摘要： Method for determining the equivalent fracture permeability of a fracture network in a subsurface multi-layered medium from a known representation of this network. The equivalent fracture permeability of a fractured network in a subsurface multi-layered medium, is determined by discretizing with a specific procedure each fracture (F) of the fracture network in fracture elements (R) (such as rectangles for example) and defining nodes N representing interconnected fracture elements in each layer of the medium and determining fluid flows (steady-state flows e.g.) through the discretized network while imposing boundary pressure conditions and fluid transmissivities to each couple of neighboring nodes. The method allows for a systematic linking of fractured reservoir characterization models with dual-porosity simulators in order to create a more realistic modeling of a fractured subsurface geological structure. The method can be implemented for example in oil production by reservoir engineers for obtaining reliable flow predictions.

摘要翻译： 从该网络的已知表示确定地下多层介质中断裂网络的等效断裂渗透性的方法。 断层网络在地下多层介质中的等效断裂渗透率是通过以断裂元素（R）（例如矩形）中的断裂网络的每个断裂（F））和定义节点N 表示介质的每层中的相互连接的断裂元素，并且通过离散网络确定流体流（例如稳态流），同时对每对相邻节点施加边界压力条件和流体透射率。 该方法允许断裂储层表征模型与双孔隙模拟器的系统连接，以便为断裂的地下地质结构创建更逼真的建模。 该方法可以例如在油藏工程师的石油生产中实现，以获得可靠的流量预测。