Machines for reservoir simulation with automated well completions and reservoir grid data quality assurance

Patent metadata

Field	Value
Publication number	US-9958571-B2
Application number	US-201414584665-A
Country	US
Kind code	B2
Filing date	Dec 29, 2014
Priority date	Dec 30, 2013
Publication date	May 1, 2018
Grant date	May 1, 2018

Abstract

Machine, computer readable medium, program code, and computer-implemented methods for performing a reservoir simulation with well completion and reservoir grid data quality assurance, are provided. An exemplary embodiment can include a data quality analyzing machine having memory containing data quality analyzing instructions configured to simulate a reservoir model with automated well completion and reservoir grid data quality assurance.

First claim

The invention claimed is:

1. A reservoir assessment system comprising:
one or more seismic wave generators deployed at a surface location in operable proximity to a reservoir location and configured to generate seismic waves;
one or more seismic wave receivers deployed in a wellbore in operable proximity to the reservoir location and configured to compile seismic survey data in the form of received seismic waves; and
a machine comprising one or more processors and tangible computer-readable medium, the machine being adapted to communicate with one or more remote computing devices operably connected to one or more displays, the tangible computer-readable medium having stored therein a set of instructions that when executed by the one or more processors cause the one or more processors to initiate a plurality of modules thereby to create reservoir data and to transform reservoir data so as to simulate a three-dimensional (3D) reservoir model on the one or more displays, the plurality of modules including:
a seismic survey module responsive to the one or more seismic wave generators and the one or more seismic wave receivers and configured to process seismic survey in the form of the received seismic waves, the seismic survey module configured to process the seismic survey data thereby to convert the seismic survey data into reservoir data, the reservoir data including at least well top location data, grid horizon data, and well trajectory position data;
a well top location module responsive to the reservoir data and configured to access well top location data describing a well top location of each well top of a plurality of well tops for a reservoir simulation model;
a well trajectory position module responsive to the reservoir data and configured to access well trajectory position data describing a well trajectory position of each well trajectory of a plurality of well trajectories;
a grid horizon automated validation module responsive to the seismic survey module and the well top location module and configured to:
perform, for each grid horizon of the plurality of grid horizons, an automated validation of a grid horizon location of the grid horizon against the well top location of one or more of the plurality of well tops associated with the grid horizon, the well top location of each of the associated one or more well tops identifying depth of a geological layer corresponding with the grid horizon, the automated validation of the grid horizon location of the grid horizon comprising comparing the grid horizon location with the well top location of each of the associated one or more well tops to determine whether one or more of the plurality of well tops associated with the grid horizon has a location that is not within a first threshold distance of the grid horizon location;
identify non grid horizon intersecting well tops comprising one or more well tops of the plurality of well tops having a location that is not within the first threshold distance of an associated grid horizon location; and

provide an indication of the non grid horizon intersecting well tops;
a well trajectory automated verification module responsive to the seismic survey module, the well top location module, and the well trajectory position module and configured to:
perform, for each of the plurality of well trajectories, an automated verification of the well trajectory position of the well trajectory against the well top locations of a set of at least two of the plurality of well top locations associated with the respective well trajectory, each well top location defining an entry position of an associated well of a plurality of wells through a corresponding geologic layer, the automated verification of the well trajectory position of the well trajectory comprising comparing the well trajectory position with the well top locations of each well top location of the set of at least two of the plurality of well top locations for the well trajectory to determine whether the well trajectory position is separated from a trajectory extending between the well top locations of the set of at least two of the plurality of well top locations by at least a second threshold distance;
identify invalid well trajectories comprising one or more of the plurality of well trajectories having a well trajectory position separated from the trajectory extending between the well top locations of the set of at least two of the plurality of well top locations associated with the well trajectory by at least the second threshold distance; and
provide an indication of the invalid well trajectories; and

a reservoir simulation module responsive to the reservoir data, the grid horizon automated validation module, and the well trajectory automated verification module and configured to:
generate a 3D reservoir model by integrating the reservoir data, the plurality of grid horizons, and the plurality of well trajectories; and
display the 3D reservoir model to simulate a reservoir.

2. The machine of claim 1 , wherein the indication of the non grid horizon intersecting well tops comprising a display visibly highlighting the non grid horizon intersecting well tops, and the indication of the invalid well trajectories comprising a display visibly highlighting the invalid well trajectories.

3. The machine of claim 1 , wherein the reservoir data further includes grid perforation location data describing a grid perforation location of each of a plurality of grid perforation events; and
the plurality of modules further includes a grid perforation module responsive to the reservoir data and the reservoir simulation module and configured to perform an automated verification of the well trajectory position of each of the plurality of well trajectories against the grid perforation location of one or more associated grid perforation events of the plurality of grid perforation events, each grid perforation event identifying a location of a portion of an associated well of the plurality of wells, the automated verification of the well trajectory position of each of the plurality of well trajectories comprising comparing the well trajectory position with the grid perforation location of an associated one of the plurality of perforation events for each of the plurality of well trajectories to identify whether an intersection exists between the well trajectory position and the grid perforation location of the associated one of the plurality of perforation events for each of the plurality of well trajectories to ensure that the plurality of well trajectories are correctly located, the grid perforation module further configured to identify and highlight each of the plurality of well trajectories that do not intersect with the respective grid perforation event associated therewith.

4. The machine of claim 1 , wherein the reservoir data further includes grid perforation location data describing a grid perforation location of each of a plurality of grid perforation events for each of the plurality of wells and well completion event data describing a well completion event location of each of the plurality of well completions for each of the plurality of wells, and production logging tool data describing production zone information for each of the plurality of wells; and
the plurality of modules further includes a well completion event module responsive to the reservoir data and the reservoir simulation module and configured to perform an automated verification of the well completion event location of each of the plurality of well completions against the grid perforation location of at least one associated grid perforation event of the plurality of grid perforation events, the grid perforation location data containing respective associated depth zone identification for each of the plurality of grid perforation events, the w

Assignees

• Saudi Arabian Oil Co

Inventors

• Al-Nuaim Mohammed S
• Al-Nahdi Umar A
• Al-Nasser Khalid A
• Dai Keyang
• Al-Zahrani Tareq
• Al-Alwan Khalid
• Al-Mulla Muath

Classifications

• G01V1/003

  Seismic data acquisition in general, e.g. survey design (G01V1/3808, G01V1/42 take precedence) · CPC title

• G01V99/00 Primary

  Subject matter not provided for in other groups of this subclass · CPC title

• G01V99/005

  Physics · mapped topic

• G01V2200/14

  Quality control · CPC title

• G01V11/00 Primary

  Prospecting or detecting by methods combining techniques covered by two or more of main groups G01V1/00 - G01V9/00 · CPC title