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  • OTM-003: Subsidence from reservoir draw-down

 

 Subsidence from reservoir draw-down

 

Challenge ID

OTM:003

1

Title

Subsidence from reservoir draw-down

2

Theme ID

ON 3.3: Subsidence monitoring - Reservoir management

3

Originator of Challenge

Onshore: OTM

4

Challenge Reviewer / initiator

Statoil, Exxon

 

General description

Overview of Challenge

5

What is the nature of the challenge? (What is not adequately addressed at present?)

Drawing down a reservoir with managed (or even zero) subsidence (i.e. avoiding reservoir collapse), can potentially increase the ultimate recoverables.  By monitoring the reservoir to be sure of zero subsidence, it can increase overall production.

6

Thematic information requirements

1. Obtain detailed topographic information,            13. Monitor ground movement,

7

Nature of the challenge - What effect does this challenge have on operations?

Reservoir management - increase ultimate production

8

What do you currently do to address this challenge?/ How is this challenge conventionally addressed?

Downhole pressure and temperature gauges can give indications of conditions that are likely to cause subsidence.  These will also indicate when draw-down from certain zones is at its limit.  Subsidence monitoring can complement these downhole technologies

9

What kind of solution do you envisage could address this challenge?

Ground movement satellite imagery could identify subsidence and deduce reservoir compaction

10

What is your view on the capability of technology to meet this need? – are you currently using EO tech? If not, why not?

EO could be a useful complimentary technology

 

Challenge classification

 

11

Lifecycle stage

Pre license

Exp.

Dev.

Prod.

Decom.

Score from impact quantification [1]

0

0

0

2

0

12

Climate classification

NOT CLIMATE SPECIFIC

13

Geographic context/restrictions

Generic onshore (Unspecified)

14

Topographic classification / Offshore classification

Generic onshore (Unspecified)

15

Seasonal variations

Any season

16

Impact Area

Increased production

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Technology Urgency

(How quickly does the user need the solution)

Immediately (0-2 years)

 

Information requirements

 

18

Update frequency

daily / weekly /annually (application dependent)

19

Data Currently used

 

20

Spatial resolution

 

21

Thematic accuracy

 

22

Example formats

GIS Shape file

23

Timeliness

Within a month

24

Geographic Extent

Reservoir footprint

25

Existing standards

No industry standards.  TRE have their own internal INSAR standards


 


[1] Impact quantification scores: 4 – Critical/ enabling; 3 – Significant/ competitive advantage; 2 – Important but non-essential; 1 – Nice to have; 0 – No impact, need satisfied with existing technology