Flooding analysis tool and method thereof

Patent metadata

Field	Value
Publication number	US-10718186-B2
Application number	US-201514832799-A
Country	US
Kind code	B2
Filing date	Aug 21, 2015
Priority date	Aug 22, 2014
Publication date	Jul 21, 2020
Grant date	Jul 21, 2020

Abstract

Described herein are various embodiments of computer-implemented methods, computing systems, and program products for analyzing a flood operation on a hydrocarbon reservoir. An embodiment of a computer implemented method of identifying conformance candidates is provided. The embodiment includes, for a first entity: solving an injection entity index to generate an injection entity index value, solving a production entity index to generate a production entity index value, evaluating an operation entity index that represents operation status to generate an operation entity index value, and combining the injection entity index value, the production entity index value, and the operation entity index value to generate a conformance problem index value for the first entity.

First claim

What is claimed is:

1. A computer implemented method of determining a conformance control treatment for a well of a hydrocarbon reservoir, wherein the well is in fluidic communication with a plurality of zones of the hydrocarbon reservoir, the method comprising:
receiving data for each zone of the plurality of zones, the received data to be used to determine a residence time distribution for each zone;
determining the residence time distribution for each zone of the plurality of zones using the received data;
identifying at least one zone of the plurality of zones to be treated with a conformance agent by comparing the determined residence time distributions of the zones and a residence time distribution threshold; and
recommending a first conformance control treatment at breakthrough time of the slowest identified zone for the at least one identified zone.

2. The method of claim 1 , further comprising recommending a slug size for the first conformance control treatment, wherein the slug size is determined by calculating injected volume for a period of time which is not more than 50% of a breakthrough time for the fastest identified zone.

3. The method of claim 1 , further comprising recommending a concentration of the conformance agent for the first conformance control treatment, wherein the concentration of the conformance agent is based on a resistance factor of the conformance agent and a rheology of the conformance agent.

4. The method of claim 3 , wherein the resistance factor of the conformance agent is sufficient to reduce original velocity of the fastest identified zone by a factor of about 10.

5. The method of claim 1 , further comprising:
receiving updated data for each zone of the plurality of zones after the first conformance control treatment;
determining an updated residence time distribution for each zone of the plurality of zone after the first conformance control treatment;
identifying at least one zone of the plurality of zones after the first conformance control treatment to be treated with a conformance agent in a second conformance control treatment based on a comparison of the updated residence time distribution of each zone and the residence time distribution threshold; and
recommending a second conformance control treatment at an updated breakthrough time of the slowest identified zone after the first conformance control treatment for the at least one identified zone after the first conformance control treatment.

6. The method of claim 5 , further comprising recommending a slug size for the second conformance control treatment, wherein the slug size for the second conformance control treatment is determined by calculating injected volume for a period of time which is not more than 50% of an updated breakthrough time for the fastest identified zone.

7. The method of claim 5 , further comprising recommending a concentration of the conformance agent for the second conformance control treatment, wherein the concentration of the conformance agent for the second conformance control treatment is based on a resistance factor of the conformance agent for the second conformance control treatment and a rheology of the conformance agent for the second conformance control treatment.

8. The method of claim 7 , wherein the resistance factor of the conformance agent of the second conformance control treatment is sufficient to reduce updated velocity of the fastest identified zone after the first conformance control treatment by a factor of about 10.

Assignees

• Chevron Usa Inc

Inventors

• Sayarpour Morteza
• Jain Lokendra
• Hinds Carmen C
• Zhang Tiantian

Classifications

• E21B41/00 Primary

  Equipment or details not covered by groups E21B15/00 - E21B40/00 · CPC title

• E21B47/00

  Survey of boreholes or wells (monitoring pressure or flow of drilling fluid E21B21/08) · CPC title

• E21B43/20 Primary

  Displacing by water · CPC title

• Y02A10/40

  Controlling or monitoring, e.g. of flood or hurricane; Forecasting, e.g. risk assessment or mapping · CPC title

• E21B49/00

  Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells · CPC title