Seismic processing comprises an important component of the services offered from the Jakarta office
of Horizon. These services are provided in cooperation with Fugro Seismic Imaging (FSI), a global
seismic processing company.
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Overview
Horizon has been providing seismic data processing
solutions to the Indonesian oil and gas industry since
1983
In volume terms, Marine projects dominate. However, Horizon has always had strong focus on Land and Transitions Zone datasets and a balance between Land and Marine projects is maintained. Much of the work of the centre involves the processing of newly acquired data, but because of the company's strong reputation, Horizon is routinely invited to reassess older datasets. It recognizes the benefits of working with both new and old data and, just as a balance between Land and Marine is maintained, so the company strives, when it can, to maintain an equal balance between processing and reprocessing.
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Personnel |
Infrastructure |
Marine |
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Land |
Short-Offset |
On-Site Processing |
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Horizon’s policy has always been to recruit the brightest young Indonesian geophysicist and geologists. The company then takes full advantage of its position as an affiliate member of the Fugro Geoscience Division, by arranging extended international training at FSI's regional centres in the UK, the USA and Australia. The processing division currently employs 18 technical staff ranging from Managers and Senior Processors to Technical Assistants.
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For those who wish, secondments to these regional centres, as well as other offices (including the state-of-the-art Fugro Geoteam acquisition vessels), are available. When they return to Jakarta, they bring back with them a wealth of experience of many different types of project, and exposure to the highest international standards.
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The computing facilities are based around four and eight-core cluster systems running Linux. Standard blades are increasingly being replaced by very large local memory systems to optimize turn-around for computationally and data demanding applications, such as 3D SRME and pre-Stack Depth Imaging.
The computer systems are complemented by high-capacity, high-throughput, disk farms. Using innovative technology, these are networked together to provide users with a unified data space of hundreds of terabytes. Tape technology has not been neglected, either. Whether dealing with legacy media such as 3480s, through to today's 3592s, Horizon has the ability to read and transcribe to client's archive media of choice.
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Projects are undertaken using a variety of software, with FSI proprietary applications such as Uniseis and MGIVA, the primary packages used. Under continuous development since 1973, Uniseis represents one of the industry's most extensive, flexible and field-proven processing systems. MGIVA is FSI's widely admired velocity analysis system (and the only software FSI licenses externally).
However, other industry-leading codes, such as ProMAX™ from Halliburton and GeoDepth™, from Paradigm are also employed.
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Typical of the work undertaken by Horizon's Marine processing department is the recent multi-client project from the Exmouth Basin, offshore Australia. The input dataset comprised three vintages, extending over 7,000km. The objective of this project was to achieve enhanced resolution at target depth, in particular with regard to fault placement, along with a general improvement in bandwidth and also address the strong multiple contamination present throughout the dataset. The sequence was amplitude preserved throughout, with the pre-STM gathers destined for stratigraphic - AVO and seismic inversion - post processing.
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PT HNE's reputation for extracting additional value from onshore datasets routinely leads to invitations to process data not just data SE Asia, but from far afield. A recent example is Horizon's involvement in a large (2,000+km.) multi-vintage 2D project undertaken for Essar from onshore Madagascar.
The objective was to process the data, using an amplitude preserved pre-STM processing workflow, in order to produce a significantly enhanced imaging of the thin sand layers, the key to the area's prospectivity.
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FSI was one of the first seismic contractors to enter the 3D market, acquiring and processing its first 3D survey as early as 1985. Running parallel with the 'full-offset' solution, it developed a 'short-offset/high-resolution' technique designed to produce very detailed images. This methodology has been successfully employed by many Indonesian clients over the years. Examples of projects undertaken in recent years include BP over their East Java concessions and Conoco Natuna.
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For some users of Horizon's 'on-site services', the preferred option is limited to the supply of hardware and software. For example, a number of clients have installed 'MGIVA' systems, for velocity quality control and analysis purposes. Other companies make much more extensive use of the services available. For another major client, Horizon undertook the provision of a full in-house, 3D Land processing facility, encompassing hardware, software and processing staff.
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For further information on seismic processing or to request a quote please contact us
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