BR9700848A - Aparelho e processo para perfuração direcional usando tubulação em espiral
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Aparelho e processo para perfuração direcional usando tubulação em espiral
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Publication number
BR9700848A
BR9700848ABR9700848ABR9700848ABR9700848ABR 9700848 ABR9700848 ABR 9700848ABR 9700848 ABR9700848 ABR 9700848ABR 9700848 ABR9700848 ABR 9700848ABR 9700848 ABR9700848 ABR 9700848A
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Publication of BR9700848ApublicationCriticalpatent/BR9700848A/pt