Installation of GRE Pipeline in Bunduq Offshore Field.

Abstract

Production losses of up to 100,000 STB per year were created by the need for testing at an offshore wellhead platform with multiple wells. This led the operator to take a course of action to reduce these losses.

Todays paper covers investigation of the alternatives considered. The selection and installation of a Glass Reinforced Epoxy (GRE) test flow line as the solution to the problem.

Introduction

A remote multi well platform, located in an Abu Dhabi Offshore Field and having a 270 meter ion flow line to a Central Collector Platform had no test facilities. Consequently when one well was to be tested the other wells had to be shut down leading to significant losses in production.

As future plans are for additional wells on the Wellhead Platform, production losses would increase with an increase in flow testing requirements.

A number of options were assessed. Installing a separate GRE flow line was considered the most viable both economically and technically.

Options Considered
1. Installation of a Multiphase Flow Meter

This option appeared to be the most economical. However, at the time of evaluation the equipment was unproven and not considered to be sufficiently accurate (10%). Extensive piping modifications would have been required to install a test header facility as well as a data link to the main complex.

2. Use of Barge Mounted Test Facilities

This option was considered and rejected as a viable alternative. The system is too dependent on weather conditions and was not considered to be cost effective in the long term.

3. Installation of a Test Separator on the Wellhead Platform.

The installation of a test separator on the Wellhead Platform was found to be the highest cost option, as major modifications would be required.

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