Wellcom revitalizes non-productive wells

A Wellcom-Gas unit developed by Caltec has proven its production enhancement capability in Italy's Spilamberto Field by revitalizing a non-productive gas well. The system effectively uses energy from high pressure gas wells, normally wasted through choking, to enhance the production and performance of low pressure wells.

A Wellcom-Gas unit developed by Caltec has proven its production enhancement capability in Italy's Spilamberto Field by revitalizing a non-productive gas well.

The system effectively uses energy from high pressure gas wells, normally wasted through choking, to enhance the production and performance of low pressure wells.

Similar systems have been used in the Hewett Field in the North Sea, where production from two low pressure offshore wells increased by 25% and 41% respectively. Payback on capital was achieved within two weeks, making it one of the most cost-effective systems ever to enhance hydrocarbon production.

According to Caltec, the simplicity, reliability and ease of operation of the system makes it suited for a wide range of offshore and subsea applications. For instance, it can be used to minimize gas flaring and to save the use of costly compressors.

A prototype Wellcom unit for an oil application has also been designed and manufactured and will be ready for testing in Agip's Trecate Field in Italy during the first quarter of 1996. Field studies already carried out by Caltec have identified a substantial number of applications in Indonesia, Malaysia, Brunei and Vietnam as well as in the North Sea and North America.

Now Caltec is forming an alliance with two companies, one being JP Kenny, to provide a full range of services for the design and supply of systems worldwide. Final stages of development and testing of Welcome is being supported by OSO, Agip, Amerada Hess, Marathon, Mobil, Sarawak Shell and industrial companies such as JP Kenny and Score (Europe).

One of the main components of the Wellcom system is Wellsep, a novel compact inline separator, which is undergoing further development and tests for new applications including bulk oil/water separation and solid (sand) separation from gas and liquid phases.

Caltec is the oil and gas division of BHR Group, with a portfolio of products in process and pipeline technology. One of its latest facilities is a 10-in. x 260 metres long flow loop, configurable to different needs. Currently it is being used to address challenges facing pipeline operators such a assessing the integrity of composite flexible pipelines; accurate leak detection; visual inspection coupled with greater assurance of internal conditions of the pipeline; high endurance pigs for long distances; and multi-diameter pigs for marginal field developments.

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