TRACERCO Diagnostics Interwell Study Gas Injection Tracerco Interwell Study - Gas.pdf · Use of a...
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Use of a TRACERCO Diagnostics ™ Interwell Study during gas injection allows enhanced reservoir characterization, leading to increased production. Would you like to: • Determine injector to producer flow relationships. • Accurately measure first gas breakthrough to calibrate computer flow models. • Quantify the amount of gas flowing from the injector to a specific producer. • Detect and quantify fault block communication. • Determine zonal gas flow communication. • Establish the presence of high flow permeable channels. • Measure flood wide reservoir preferential flow trends. Additionally, information can be gained in the following areas: • Vertical flow profiling of gas at a distance away from the injector. • Monitoring between a disposal gas well and main production reservoir. • Determining whether a flood is first contact miscible or if free gas flow exists. • Assessing foam injection enhanced oil recovery techniques. Enhanced understanding of gas injection within your reservoir through use of a TRACERCO Diagnostics ™ Interwell Study should be an integral part of your monitoring toolkit. We can be reached 24 hours a day, seven days a week to provide timely and effective solutions to your reservoir uncertainties. I1 I2 P1 P2 Injected gas volume Tracer concentration Injected gas volume Tracer concentration Typical gas tracer response showing cross fault communication. P1 P2 TRACERCO Diagnostics ™ Interwell Study Gas Injection
Transcript of TRACERCO Diagnostics Interwell Study Gas Injection Tracerco Interwell Study - Gas.pdf · Use of a...
Use of a TRACERCO Diagnostics™ Interwell Study during gas injection allows enhanced reservoir characterization, leading to
increased production. Would you like to:
• Determine injector to producer flow relationships.
• Accurately measure first gas breakthrough to calibrate computer flow models.
• Quantify the amount of gas flowing from the injector to a specific producer.
• Detect and quantify fault block communication.
• Determine zonal gas flow communication.
• Establish the presence of high flow permeable channels.
• Measure flood wide reservoir preferential flow trends.
Additionally, information can be gained in the following areas:
• Vertical flow profiling of gas at a distance away from the injector.
• Monitoring between a disposal gas well and main production reservoir.
• Determining whether a flood is first contact miscible or if free gas flow exists.
• Assessing foam injection enhanced oil recovery techniques.
Enhanced understanding of gas injection within your reservoir through use of a TRACERCO Diagnostics™ Interwell Study should be an
integral part of your monitoring toolkit.
We can be reached 24 hours a day, seven days a week to provide timely and effective solutions
to your reservoir uncertainties.
I1
I2
P1
P2
Injected gas volume
Trac
er c
once
ntra
tion
Injected gas volume
Trac
er c
once
ntra
tion
Typical gas tracer response showing cross fault communication.
P1
P2
TRACERCO Diagnostics™ Interwell StudyGas Injection
www.tracerco.com tracerco�tracerco.com XM0051/0/C/JM1037/948
A Tracerco customer within the North Sea started to inject gas
to maintain pressure and drive remaining oil in-situ to a
number of target producing wells. The gas injection drive was
designed to displace hydrocarbons, in a northerly direction,
towards key producing well B. In order to monitor injection gas
movement, it was decided to carry out a TRACERCO
Diagnostics™ Interwell Study.
A chemical tracer was injected shortly after first gas injection.
The injection was undertaken directly into the gas injection
wellhead with no disruption to ongoing operations. Routine
sampling and analysis at target producing wells was carried out
to monitor presence of injection gas.
Over time a number of producing wells yielded tracer materials.
These included wells A, C, D and E. However zero tracer response
was seen in the main target well B. Using a number of operational
parameters it was possible to quantify the amount of injection gas
returning to each of the target producing wells together with first
breakthrough time and mean residence time of injection gas.
Analysing the data collected and using this within the flow
simulation computer model it was deduced that a significant
channel was directing firstly North Eastwards around a fault area
and then directly Northwards towards producing wells lying 2
kilometres from the injection well. The information generated was
useful for the Reservoir Engineer in evaluating the sweep efficiency
and has highlighted areas of missed contact.
Gas Sweep Pattern Determination
9550
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9450
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950095
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594000 595000
0m 1000mscale
1800 40 80 120 160Days post injection
Conc
entra
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0
Well BD4552 Tracer Recovered
20 60 100 140
25
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0
% Recovery
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CDE
I
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