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1. (WO2018106835) SUBSEA SKID FOR CHEMICAL INJECTION AND HYDRATE REMEDIATION

Pub. No.:    WO/2018/106835    International Application No.:    PCT/US2017/064960
Publication Date: Fri Jun 15 01:59:59 CEST 2018 International Filing Date: Thu Dec 07 00:59:59 CET 2017
IPC: E21B 7/124
E21B 37/06
E21B 43/36
Applicants: WRIGHT, David, C.
Inventors: WRIGHT, David, C.
Title: SUBSEA SKID FOR CHEMICAL INJECTION AND HYDRATE REMEDIATION
Abstract:
A skid-mounted chemical and hydrate remediation system including a subsea separator is described for use in the event of a hydrate plug with chemical injection. This system comprises a manifold which communicates between a subsea pipeline and a plurality of pumps located within a frame. This plurality of pumps comprises at least two pumps powered by ROV hydraulics which operate in series to extract fluid from the pipeline, and at least one chemical injection pump which communicates hydrate solvent through the manifold back into the pipeline. The system additionally comprises a coiled Iiquid/gas separator which separates the extracted fluid into liquid and gas components and returns them to the surface separately.