Schlumberger Technology Corporation

Frode Bratvedt

Shingo Watanabe

Kyrre Bratvedt

Matthew Worthington

Sanjoy Kumar Khataniar

Vadim Blekhman

Milan Frank

Trevor Graham Tonkin

Paul Childs

Martha Crane

Rudi Olufsen

Vsevolod Laptev

Using a reservoir simulator, a reservoir model state is obtained. The reservoir model state is used to trace streamlines to obtain streamline trajectories and detect fluid fronts along the streamlines. Using the streamline trajectories, the streamlines are connected to wells. The streamlines are grouped for multiple granularity levels, into groups to obtain a grouping hierarchy. Through the granularity levels of the grouping hierarchy, fluid front time of flights are determined for the groups, and target flowrates assigned to completion devices based on the fluid front time of flights to obtain target flow rates. A completion design is presented that incorporates the target flowrates.

Streamline based creation of completion design

Reservoir sweep efficiency includes obtaining fluid front arrival times for streamlines in a reservoir. A wellbore is partitioned into independent production zones, and a target flow rate is allocated to each of the independent production zones based on the fluid front arrival times. Partition choke parameters complying with the target flow rates are allocated to generate a completion design, which is presented.

Method and system for generating a completion design using a streamline model

In visualizing flow in subsurface reservoirs, a system partitions flow information according to source-sink pairs and streamlines in a reservoir. The system displays dynamic streamline flow indicators and flow animations, such as 3D pie charts, to dynamically show flow contributions and properties at each well. A pie chart displayed at a producer well may have pie wedges that dynamically update to show the percentage of fluid being received via streamlines from each of multiple injectors. Highlighting the chart highlights all wells contributing to the output. Radial sections of each pie wedge may be further mapped to show the flow rate of components, such as oil, water, and gas phases in a streamline. Each chart may show many other properties and may be stacked across time steps. The system also displays streamline properties with animations, which demonstrate flow velocity and model properties, such as phase components, rates, volumes, etc., through color and size codes.

Visualizing fluid flow in subsurface reservoirs

To simulate a subterranean structure having fracture corridors, a model is used to represent the subterranean structure, where the model also provides a representation of the fracture corridors. A streamline simulation is performed using the model.

Streamline flow simulation of a model that provides a representation of fracture corridors

A method of determining fluid flow in a volume containing two or more fluid components, including determining a pressure field for the volume. One or more streamlines are determined from the pressure field, and the fluid composition is solved for the fluid composition along the, or each, streamline. The pressure may also be solved along the, or each, streamline. The step of solving along the, or each, streamline may be performed using a finite difference technique.

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Asker, Norway

Frode Bratvedt