Right on the route
Selecting the initial route for a pipeline is a complex business that can take months of effort. Nerys Morton discovers how a new tool developed by BP is helping to turn those months into minutes
This is the sort of challenge that frequently confronts pipeline engineers. 'It's not just about drawing a line on a map,' says Ian Neilson, chief engineer, pipelines and civil, for BP's exploration and production business, based in Sunbury. 'There are a lot of interactions and complexities you have to take into account when you are going through different terrains and different countries and regions.'
Investigating a pipeline investment opportunity, evaluating pipeline projects or planning a pipeline route, all require a large amount of data to be collected up front, covering factors ranging from geography and topography to local politics, existing infrastructure and the location of environmentally sensitive areas. The whole process can take months, and the decisions made rely largely on experience and manual calculations.
'The process is often about people standing over maps arguing - not always rigorously - about why the pipeline should go here and not there,' observes Neilson, an observation which prompts Trevor Hill, director for surface engineering for the TNK-BP joint venture in Russia, to recall: 'I can remember cases where people would base an initial routing assessment on the maps in the Times Atlas of the World.'
In addition to speed, a further advantage of PPFT is that the factors behind each option considered are fully documented, so that the decision making process and its history are totally transparent. 'The idea is that as a particular route gets refined during the life of the project, we can see how it has changed and look back into the history of the project to understand why we made the decisions we did,' explains Neilson.
And because PPFT provides BP with ownership of data over the whole project life cycle, it helps the company to work more easily and effectively with external contractors. In essence, says Nielsen: 'PPFT helps us to make sure we know where a pipeline should go, that it is the right size, and that we know what it is going to cost.'
Full and flexible
PPFT is a proprietary web-based application consisting of a server-based geographic information system (GIS) and modelling components. It first identifies the optimum paths for pipeline routing, and then integrates these with hydraulic optimisation, project cost and economic evaluation. It includes an easy-to-use interface that asks users for basic types of information in standard formats and allows them to select which criteria they would like to focus on, so they can compare a variety of 'what if' scenarios. And because it is a web-based tool, PPFT is designed to work in a collaborative environment. 'If someone develops a route in the Houston office, I can pick it up in Sunbury and modify or do a cost estimate on it,' Neilson notes.The system incorporates industry standard data collection and database software in compliance with the Pipeline Open Data Standard (PODS), which BP strongly supports. PODS, which is used by many industry service providers and software developers involved in all stages of pipeline development, underpins the basis of PPFT. Michael King, a senior pipeline engineer in BP's exploration and production technology group and programme manager for the GIS project in BP, emphasises that there are very good reasons for this.
Finding an efficient way of reconciling and managing all the different types of information, so that they could be used for analysis early in a project's lifecycle, was one of the main reasons behind the development of PPFT, says King.
'Establishing a standardised data collection method at the beginning of the project is essential,' he notes. 'The PPFT tool addresses this issue by incorporating all of these elements into the routing process.'
Another spur for the PPFT development was the growing capability of GIS technology - a development King follows closely.
'A major driver for PPFT development was the leap taking place in GIS technology - earlier releases of GIS had limitations, but over the past few years GIS has matured, enabling BP to make more broad and integrated use of it. GIS has been integrated into the pipeline routing concept and hydraulic optimisation which, together with cost estimates and economic evaluation, allow us to paint a comprehensive picture for a pipeline solution very quickly.'
Global readiness
In fact, GIS lies at the heart of a key element of the PPFT - the Route Collaboration Tool (RCT), a proprietary BP development. By bringing together GIS technology, high resolution imagery and advanced mathematical techniques, the RCT software automatically generates a pipeline 'suitability' map that illustrates the preferred areas for pipeline routes. The tool includes a suite of applications. One suggests possible routes for the pipeline. Others advise on optimum pipe diameters, how many pumping or compressor stations will be needed, where they should be located, the operating pressure for moving gas or liquids in the most efficient and economical way, and how much the proposed pipeline project will cost.RCT is also simple to use. Once the end points of the pipeline are entered into the application, within minutes the tool generates suggested routes and corridors for the line, taking into account environmental concerns, construction issues and other factors. 'We have a global data set, so if you tell us where the two end points are for a pipeline, we can create an initial route for that pipeline anywhere on land in the world in probably less than an hour,' says King.
So far the use of RCT has been restricted to onshore pipelines. But in the not-too-distant future, this capability will also be available for planning routes for offshore pipelines as well, as more global GIS data are incorporated into the RCT database to paint a picture of the ocean floor by including information on bathymetry, coastal boundaries, geohazards, seismic surveys, and other relevant features. In addition, data related to existing offshore pipeline infrastructures, platform locations and shipping lanes will also be incorporated on a regional basis where available.
Growing popularity
RCT was first used on a pipeline project in Russia in 2005. Since then it has been used on 11 further projects, where it has proved valuable for helping to assess pipeline options in Turkey, Bulgaria, Greece, India, Russia and elsewhere by providing a consistent, transparent and rapid assessment of pipeline route alternatives during the early stages of projects. (See panel at end of this article.)'As part of PPFT, RCT is already developing an impressive number of supporters,' says Neilson.
Comments like this serve to confirm that BP's financial investment and more than two years of effort that went into developing the RCT application were resources well spent. 'The resulting time and cost savings,' King points out, 'will pay back this investment many times over.' Although ongoing enhancements - such as the addition of radar data from the space shuttle radar topographic mission to improve accuracy of geographic and topographic information in the RCT model, and the addition of an offshore routing function - will make RCT even more useful, King still feels there is more to be done. 'Our ultimate goal,' he explains, 'is to see RCT making a difference at the front end of every pipeline project.'
This goal is coming closer to reality. The RCT application is being migrated into BP's American Mega Data Centre and will become a standard product application in BP's digital and communication technology portfolio. 'The vision,' says King, 'is for RCT to be the first port of call for BP's engineers when considering a pipeline project.'
Panel: PPFT around the world
PPFT has already played an important role in the assessment and planning of pipeline projects in India, North Africa and the USA as well as in Russia, Turkey, Bulgaria and Greece.In Russia, PPFT is being used to evaluate the options and appraise the business opportunity for building a regional pipeline system for transporting liquids from a group of oil and gas fields in the Yamal region in northwest Siberia. The project is at a very early stage, and the end point of the pipeline is still under discussion. 'In this situation the use of PPFT is proving to be a very rapid way of establishing a preliminary pipeline routing, together with an order-of-magnitude cost,' says Lindsay Peden, project engineer in BP's Russia and Kazakhstan strategic performance unit. 'And once routes are established, it allows us to run a number of throughput scenarios.'
Also in Russia, PPFT helped to establish and assess route options for a 2000km-long pipeline between the giant Kovykta gas field - now operated by Gazprom - and a proposed final destination in China. PPFT has also enabled BP's engineers to confirm the results of an international feasibility study on the Kovykta development, carried out in 2001.
'Kovykta is a very large and complicated project,' explains Charles Bludworth, BP's Kovykta export surface facilities manager. 'There are many challenges including seismic, permafrost, mountainous terrain, peat bogs and numerous river crossings with meandering flood plains. The PPFT route selection tool and rapid hydraulics analysis enabled us to home in quickly on the best routes and concentrate our efforts along these corridors.'
'Our consultants had spent a considerable time assessing one of the proposed pipeline routes - and the PPFT came up with an almost identical route in less than a day,' recalls Paul Bibby, project manager in the Russia and Kazakhstan team. 'It was most impressive and extremely versatile, allowing us to carry out a very quick but accurate analysis of an alternative option in Turkey, and to carry out a more comprehensive study looking at alternative throughputs, hydraulics and costs on the preferred route.'
Trevor Hill, director for surface engineering for the TNK-BP joint venture in Russia, hopes that the application of PPFT will soon extend much further. 'At the moment around the world we have good examples of the use of PPFT at different stages of various projects, ranging from concept evaluation to detailed design and operation. Now we are looking forward to seeing a BP-operated project where PPFT is applied in full from beginning to end.'

