Bespoke Design to Accommodate Limited Deck Space – Compact Methanol Injection Solution

Client challenge

Our client, based in Equatorial Guinea, required three pumps to service two separate methanol injection points on their production platform. Two pumps were needed to inject 64.35l/h at 22.4barg process pressure in a duty/standby arrangement, while one pump was required to inject 60.56l/h at 165.5barg process pressure. Limited deck space mandated that the skid footprint could not exceed 1.65m x 0.6m.

What we did

To address our client’s needs, we designed and built a package consisting of three Milton Roy electric drive pumps, each compliant with Atex Zone II. This included two MRoy XB simplex dosing pumps for 22.4barg injection and one Primeroyal K injection pump for 165.5barg injection. A common package suction system was created to feed all three pumps.
Two separate discharge manifolds were designed to independently supply each injection point.
The limited deck space challenge was mitigated by the absence of height restrictions in the designated area. This allowed for a package design which incorporated the pumps and instrumentation within a crash frame, 2 metres in height. The carbon steel frame incorporated earthing points and lifting eyes. Each pump was equipped with an individual discharge pressure transmitter, terminated in a skid-edge junction box. The 22.4barg injection line featured a flow transmitter terminated to the client’s DCS. Individual pump start/stop stations were installed at the skid edge and also terminated to the client’s DCS.

Results

The bespoke package was delivered to the client’s exact specification and within the agreed timeframe. The successful delivery prompted an immediate request for an additional package from the client, again requiring a bespoke design.