Could you answer these questions before you start?

How much time, money and trouble would you save if you could?

PRE-BID...

Even if you only have a rough outline, SurvOPT can give you a realistic simulation in minutes.

We need to survey a particular polygon

What vessel and streamer configurations will be cost effective?
What’s the fastest way of acquiring this polygon?
How long will it take?
What’s the time and cost impact of changes in streamer length?
If we start on a particular date, when will it be completed?

To get the best prediction, we need to allow for weather standby, technical downtime, and infill...

How do different estimates for infill and lost time affect completion dates?
Will the project be complete within the weather window?

The survey area has four platforms and some shallows...

How much time will this add to the survey?
What’s my expected coverage?
How big will the undershoot program be?
Approximately how long will it take to do the undershoot program?

Maybe we should use a smaller spread to improve coverage and safety around the obstructions...

Will it save time?
Will it be cheaper?
Will it reduce the undershoot program?

Vessel rates are at an all time high...

What’s our cost estimate with a fixed day rate?
How about a per-kilometer rate?
How much if the production rate applies for the first 2 hours of line change, and then standby rate?
How much if Infill is $X/km, Prime is $Y/km, and line changes are paid at a flat rate?

POST BID...

SurvOPT is used by all the major acquisition contractors. As well as answering a wide range of practical questions, using SurvOPT improves communication and strengthens your negotiating position.

Contractors have submitted a number of proposals…

Is each acquisition plan tailored efficiently to the survey?
Do the predicted durations accurately reflect the vessel performance and survey geometry?
If bids include an expected average line change duration, how was it calculated and is it accurate?

Now a vessel and configuration has been chosen...

Can the estimates be refined using production data from a previous survey with the same vessel and configuration?
Where’s the best area to start shooting?
When can we expect to get the first swathe off to processing?

Imaging considerations require a wide group of lines must be shot towards the north...

How does that affect the shooting plan?
Would a different plan now be more efficient?

Area A needs to be shot as a priority area before areas B and C...

When will the priority area be complete?
How much longer will the project take if a priority area is defined?
How much more will it cost?
If the priority area is inefficient to shoot, what minor changes would make it more efficient?

...and this group of lines all need to be shot in the same direction

What’s the most efficient way of incorporating that into the plan?

A new area may need to be added to the survey...

How much more will it cost?
What effect will it have on the shooting plan?
What’s the incremental cost per square km? Is it worth it?

I want to deadhead all these obstructed lines to improve coverage…

How much time will this add to the survey?

We’ve got an FPSO passing through during the 2nd week... we won’t be able to shoot within area G

How much (if at all) will this add to survey duration?
Is it worth paying a premium to get the FPSO to detour?

The survey area is subject to tidal currents...

Which swathes should we shoot at spring tide? What about neaps?
What happens if the start date changes?
How are currents going to affect my close passes?
How are currents going to affect my infill rates?
Should I shoot progressive infill?
Overlapping streamers would reduce infill, but will the cost be prohibitive?

DURING AQUISITION...

Equipping your representative with SurvOPT will help to ensure that fully informed scheduling decisions are made as the survey progresses.

We’ve got 17 obstructions, a coastline and 150 preplot lines. Preplots 65 to 97 must be shot northwards, and we can’t shoot on Preplots 1280 to 1704 during June...

How will we shoot this complicated survey efficiently?
How long will it take?
When will we finish?
How many days difference are there between an optimized and non-optimized plan?

Transit and Deployment took longer than expected...

How does that affect weather windows?
Should I rethink any aspect of my project plan?

There’s 11 lines left to shoot...

What’s the fastest way to shoot them?
Can we finish them, demobilize, and still crew change on time in port?

There’s an autofire halfway along a line...

Is it more efficient to circle or to change to a different line?

Squid Boats will move into the north end of the block for the week around full moon...

How can we best plan to work the southern end of the survey during this week without wasting time?

We’ve got an FPSO passing through next week and we won’t be able to shoot within area G...

How much (if at all) will this add to survey duration?
Is it worth paying to get the FPSO to detour?

We’re stuck timesharing with another vessel...

How can we best negotiate to minimize lost time?
How do we make best use of our time windows?

DAY TO DAY PLANNING...

We’ve still got 38 lines to shoot, plus infill...

What’s a good estimate for when we’ll finish the survey?

TIDES, CURRENTS and WEATHER...

We need to do a close pass of a rig on the starboard side...

How can I plan production so that I know I’ll have port feather during the pass?

Ten lines need to be shot into a shallow region...

How can I plan to arrive at each end of line around high tide?

A coverage hole can be filled with one infill pass if feather is between 5 and 10 degrees to starboard...

During what periods could we start these lines?
How can we arrive at the right time without adding an artificial delay?

The survey area is subject to strong tidal currents...

Which swathes should I shoot at spring tide? What about neaps?
How are currents going to affect my infill rates?
Should we shoot progressive infill?
Will start of line feather on the next three lines of this 2D survey be within spec?
How can I avoid shooting with a strong tail current which is affecting separation?

Early storms have delayed production, and winter is approaching...

What can we reasonably complete before the end of the season?
What should we cut?

REVIEWING PRODUCTION...

We’ve been in production for a month...

How can I calibrate the performance of the vessel to improve future predictions?
Where have we been gaining and losing time?

CHANGES...

A change is required in the priority lines...

If we shoot them immediately, how much will this extend the program?
Is there a way to do them quickly that doesn’t blow out the overall program duration?
When will lines 1040 to 1620 be complete and ready to send to processing?

Some line changes were unexpectedly long…

How can I establish whether the delay was due to a tail current, or was technical downtime?