Page 56: of Offshore Engineer Magazine (May/Jun 2015)

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integrity to reduce the risk of failure in

Gulf of Mexico ?eld discoveries these deeper prospects. Their failure can 100% result in extended non-productive time and subsequent precipitous costs for apparent reasons.

Drilling 80

Environmentally benign drilling and completion ? uids and any associated additives are primary to reduce risk in the event of unanticipated spills. 60

With the mandate of utilizing the safety data sheet format (full compliance by

June, 2016) versus the previous mate- 40 rial safety data sheet a more uniform/ identi? cation of the substance/mixture is required. This simplicity of transparency

Percent in water depths > 4600 ft. should assist with the planning/decision 20 process. The use of non-chloride brine as well as eliminating chloride from the internal phase of an oil-based ? uid is 0 ’93 ’94 ’95 ’96 ’97 ’98 ’99 ’00 ’01 ’02 ’03 ’04 ’05 ’06 ’07 ’08 ’09 ’10 ’11 ’12 ’13 ’14 ’13 ’12 ’11 ’10 ’09 ’08 ’07 ’06 ’05 ’04 ’03 ’02 ’01 ’00 ’99 ’98 ’97 ’96 ’95 ’94 ’93 ’92 ’91 ’90 ’96 ’97 ’97 ’98 ’99 ’00 ’01 ’99 ’00 ’01 ’02 ’03 ’04 ’04 ’05 ’06 ’06 ’07 ’08 ’08 ’09 ’10 ’14 ’14 ’10 ’11 ’12 ’13 ’14 another step towards a more benign ? uid.

Year

Biodegradation of cuttings produced from oil-based ? uids has potential to

Fig. 2 - Water depths greater than 4600ft. Baseline established using deepest TLP, reduce impact and disposal costs when

Magnolia-ConocoPhillips. Source: BSEE.

a synthetic biodegradable external phase phase, a very short list of commercial is used. This is yet another advancement and the ability to supply formates at the brines: calcium bromide, zinc bromide that can reduce the impact on the envi- anticipated required volumes, the list is and formates (K, Na, and Cs) are avail- ronment, land and sea. even shorter. And considering that zinc able. To further, when one considers the However, when one considers the is a priority pollutant the use of cal- relative lack of Gulf of Mexico infrastruc- density requirements for these deepwa- cium bromide may be the more prudent

ABBTC_ADL2HP_SE_NETW_EVERYWHERE_OE 14.04.15 09:49 Seite 1 ture (e.g., dedicated tanks, lines, etc.) ter prospects, especially the completion choice.

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