Schlumberger introduces new while-drilling services

Schlumberger took advantage of the SPE conference in Amsterdam to introduce its new-generation "Scope" while-drilling services.

Schlumberger took advantage of the SPE conference in Amsterdam to introduce its new-generation "Scope" while-drilling services. The Scope services quadruple the data transmission rate over the industry standard, Schlumberger says.

Three products comprise the Scope family of services:
• EcoScope
• StethoScope
• TeleScope

The EcoScope multifunctional logging-while-drilling (LWD) service integrates drilling and formation evaluation sensors in a compact collar to deliver industry first measurements from a while-drilling service. Data includes key drilling measurements plus unique measurements such as elemental capture spectroscopy and sigma. The EcoScope service replaces the traditional AmBe source with a pulsed neutron generator.

Japan Oil, Gas, and Metals National Corp. (JOGMEC) and Schlumberger collaborated on a research project to develop logging-while-drilling technology that reduces the need for traditional chemical sources. Designed around the pulsed neutron generator (PNG), the EcoScope service uses technology that resulted from this collaboration.

"Because of Japan's limited national oil and gas resources, our R&D activities are closely related to global industry needs and leading technology trends," Tsuneo Shimamura, executive director, JOGMEC, says. "In this respect, international R&D collaboration and technical training are an integral part of our activities.

The second member of this product family is the StethoScope formation pressure-while-drilling service. StethoScope provides formation pressure measurements during drilling operations. With StethoScope, direct pore pressure and mobility data can be used for fluid typing, reservoir pressure management, and mud weight control and optimization to avoid kicks and drilling delays.

Statoil recently used the StethoScope service in its Kristin and Gullfaks fields, among others, enabling early production and saving significant rig time, Schlumberger says.

"We use the StethoScope service for its quality, reliability, and flexible integration with the rest of the LWD tools," Harald Laastad, advisor geo-operations and data acquisition, Statoil, says. "Statoil has used StethoScope for 17 runs already, and the use of the service is increasing. Its flexibility allowed us to run it successfully in a variety of downhole environments, including vertical to high-angle deviations, high-temperature/high-pressure wells as well as in formations with both low and high mobility. We see great opportunities for this key technology in Statoil, especially in the production drilling environment."

TeleScope, the third product in the Scope family of services provides high-speed telemetry-while-drilling service when used in conjunction with the Orion telemetry platform, increasing data transmission rates fourfold, according to Schlumberger.

2/23/05

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