Page 60: of Offshore Engineer Magazine (Aug/Sep 2016)

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drilling dysfunctions early. considered incrementally above

Figure 3 – Telemetry and Value

A recent ? ve-well development the traditional cost of the string

Add Savings (days) campaign on E.ON Ruhrgas’ Babbage since these are existing costs.

3.0 ? eld (ref – SPE 178798, 2016) used For an initial value analysis,

WDP to add value. Apart from the it is acceptable to look at nomi- 2.5 telemetry time savings of 25.8 hours nal well designs and project

DRILLING per well, a reduction in runs to total inputs. If further data is avail- 2.0 depth (TD) of more than 40% was able, it is important to conduct identi? ed, as well as a 200-300% proper off-set well analysis to increase in ROP. clearly verify the telemetry time 1.5

Total’s operation on Martin Linge savings and further model the also saw increased reservoir drain potential value-adds against the 1.0 of 1000m through ECD (equivalent well construction challenges. circulating density) limits optimiza- Traditionally, any value-add tion versus shoe strength. It also had assessment will include a .5 a nearly ? ve-fold increase in ROP, Monte Carlo analysis to ? ll any instant activation, and con? rmation probabilistic scenarios, such 0 and de-activation reaming tools. as an increase in on-bottom

Well A Well B

Enhanced reservoir appraisal was performance in order to provide

Telemetry only Average of all savings enabled through use of seismic while a more realistic output. Typical

Basic value add savings Average of telemetry drilling look ahead, activation and data used are BHA designs, savings data transfer through WDP, which net daily drilling reports, bit run re- • an increased drain in the sweet spot. Telemetry network management – ports, MWD and mud loggers’ end of well

While the upfront costs might seem Any costs associated to managing the reports, well summaries and de? nitive like a hurdle, calculating the costs network including service company surveys, time-based drilling mechanics against the bene? ts needs a closer look. charges for supplying the interface sub logs, activity summaries with planned vs

WDP cost, or cost to a project, can be so that all their MWD, LWD and RSS actual time depth curves and slide sheets outlined as: tools operate on the network and landmark exports. • •

Cost of WDP – The capital cost or Wired Tools – Wiring cost or addition-

The business case rental cost to the project al rental cost of wired tools in the BHA •

Inspection, repair and maintenance compared to conventional (non-wired) Below is an example from an ongo- (IRM) – Additional electrical in- BHA tools ing ? eld development project in Asia • spections, replacement of coils and Network maintenance and uptime – Paci? c. The business case has been sup-

DataCables, which measured in the The small time component related to ported with a two off-set well analysis. business case and is an incremental per- any maintenance on the network The following main assumptions are centage increase at the nominal inspec- For the cost of WDP, wired tools and considered when calculating the net tion cycle for a particular project the IRM components, these can be value:

Learn more about wired drill pipe in OE’s

Figure 5 – Commercialized Net Value next expert access webinar on September $900K 15 2016, at 11AM CST. Join author Leon

Hennessy and Brian Van Burkleo as they $800K discuss how to deliver project value with

Net value increases depending on value wired drill pipe. added bene?ts realized $700K

Visit OEdigital.com to register today. See page 65 for more info.

$600K

Net value per well $605K

Figure 4 – Operating $500K

Expense per Annum $400K $327,000$337,000

Net value per well 19% 18% $300K $187K $200K $1,120,000

Cost per well Cost per well 63% $219K $219K $100K

WDP String Cost $K

Net value versus Net value potential versus

Telemetry Network Equipment telemetry time savings total time savings

IRM Expense

August 2016 | OE oedigital.com 62 060_OE0816_D&C2_NOV.indd 62 7/25/16 11:09 AM