Brine preparation for DST in deepwater exploration wells

Dear all,

I’m in the process of planning DST in a deepwater exploration well. Brine is planned to be used as packer fluid. Pore pressure of target formation is expected up to 12.5-14.0 ppg. Under the circumstances, potassium formate (KHCO2) or calcium bromide (CaBr2) would be candidate brine, which is very expensive. Due to the nature of DST materials, brine has to be prepared in advance for the operations at remote areas like Japan regardless of whether it is used or not. How can such brine (potassium formate or calcium bromide) be obtained by the least expensive way from the market? Is it possible / common to obtain it by consignment or buy-back contract?

I’d like to know your experience of high-density brine preparation for DST.

Regards,

Keita

4 Answer(s)

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