Flooding analysis tool and method thereof

Patent metadata

Field	Value
Publication number	US-2016178799-A1
Application number	US-201514832630-A
Country	US
Kind code	A1
Filing date	Aug 21, 2015
Priority date	Aug 22, 2014
Publication date	Jun 23, 2016
Grant date	—

Abstract

Described herein are various embodiments of computer-implemented methods, computing systems, and program products for analyzing a flood operation on a hydrocarbon reservoir. For example, an embodiment of a computer implemented method for analyzing a flood operation for a hydrocarbon reservoir having a plurality of zones is provided. The embodiment includes receiving injection profile data (ILT) and injection rates. The embodiment also uses the received injection profile data and injection rates to split each injection well into multiple zonal level injectors. The embodiment also includes running capacitance resistance modeling treating each zonal level injector as a single injector, where running capacitance resistance modeling includes generating interwell connectivities at the zonal level.

First claim

What is claimed is:

1 . A computer implemented method for analyzing a flood operation for a hydrocarbon reservoir having a plurality of zones, the method comprising:
receiving injection profile data (ILT) and injection rates; using the received injection profile data and injection rates to split each injection well into multiple zonal level injectors; and running capacitance resistance modeling treating each zonal level injector as a single injector, wherein running capacitance resistance modeling includes generating interwell connectivities at the zonal level.

2 . The method of claim 1 , further comprising determining if there is crossflow between at least two zones.

3 . The method of claim 1 , further comprising generating at least one PLT.

4 . The method of claim 1 , further comprising generating continuous production profile (PLT).

5 . The method of claim 4 , wherein continuous production profile (PLT) is generated if secondary recovery is contributing in production, which can be obtained from injection rates and zonal level connectivities by summing up contribution of zonal injectors and their connectivities to at least one of the producers.

6 . The method of claim 4 , wherein continuous production profile from primary and secondary production is obtained by using the primary and secondary recovery portion of CRM estimate once the CRM zonal is performed.

7 . The method of claim 6 , wherein the primary portion of production profile is estimated from CRM zonal level primary portion which is an exponential decline.

8 . The method of claim 6 , wherein the secondary portion of production rates at zonal level are obtained from summing the multiplication of injection rates and connectivities at zonal level from all injectors contributing in the production of a given producer.

9 . The method of claim 1 , further comprising interpolating for PLT, ILT, or both.

10 . A computing system for analyzing a flood operation for a hydrocarbon reservoir having a plurality of zones, the system comprising:
at least one processor; and at least one memory containing computer executable instructions, that when executed by the at least one processor, cause the computing system to perform a method comprising: receiving injection profile data (ILT) and injection rates; using the received injection profile data and injection rates to split each injection well into multiple zonal level injectors; and running capacitance resistance modeling treating each zonal level injector as a single injector, wherein running capacitance resistance modeling includes generating interwell connectivities at the zonal level.

11 . The system of claim 10 , wherein the computer executable instructions are further configured to generate a value of injected fluid for at least one other injection well.

12 . The system of claim 10 , wherein the computer executable instructions are further configured to determine if there is crossflow between at least two zones.

13 . The system of claim 10 , wherein the computer executable instructions are further configured to generate at least one PLT.

14 . The system of claim 10 , wherein the computer executable instructions are further configured to generate continuous production profile (PLT).

15 . The system of claim 14 , wherein the continuous production profile (PLT) is generated if secondary recovery is contributing in production, which can be obtained from injection rates and zonal level connectivities by summing up contribution of zonal injectors and their connectivities to at least one of the producers.

16 . The system of claim 14 , wherein the continuous production profile from primary and secondary production is obtained by using the primary and secondary recovery portion of CRM estimate once the CRM zonal is performed.

17 . The system of claim 16 , wherein the primary portion of production profile is estimated from CRM zonal level primary portion which is an exponential decline,

18 . The system of claim 16 , wherein the secondary portion of production rates at zonal level are obtained from summing the multiplication of injection rates and connectivities at zonal level from all injectors contributing in the production of a given producer.

19 . The system of claim 10 , wherein the computer executable instructions are further configured to interpolate for PLT, ILT, or both.

20 . A computer-readable storage medium comprising computer-executable instructions which, when executed by a computing system, cause the computing system to perform a method of analyzing a flood operation for a hydrocarbon reservoir having a plurality of zones, the method comprising:
receiving injection profile data (ILT) and injection rates; using the received injection profile data and injection rates to split each injection well into multiple zonal level injectors; and running capacitance resistance modeling treating each zonal level injector as a single injector, wherein running capacitance resistance modeling includes generating interwell connectivities at the zonal level.

Assignees

• Chevron Usa Inc

Inventors

• Sayarpour Morteza
• Zhang Tiantian
• Hinds Carmen C

Classifications

• E21B43/14

  Obtaining from a multiple-zone well · CPC title

• E21B43/16

  Enhanced recovery methods for obtaining hydrocarbons · CPC title

• G01N27/22

  by investigating capacitance · 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

• E21B43/20 Primary

  Displacing by water · CPC title