Schlumberger Develops New While-Drilling Services for Improved Drilling Performance, Well Placement

Published Apr 17, 2005
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Schlumberger has developed new-generation Scope* while-drilling tools that dramatically improve drilling performance and well placement – leading to increased production, sooner. The Scope while-drilling services set new standards for reliability and data quality, while quadrupling the data transmission rate over the industry standard.

Comprised of three products, the Scope family of services advances industry standards through greater efficiency, higher reliability and better answers with enhanced operational safety. The EcoScope* multifunctional logging-while-drilling (LWD) service provides more downhole information from a single collar than any other LWD tool. Incorporated into one collar are drilling and formation evaluation sensors that provide unique measurements such as sigma and elemental capture spectroscopy as well as key drilling measurements like annular pressure, borehole diameter and downhole shock. The tool replaces the traditional AmBe source with a pulsed neutron generator (PNG). Efficiency and safety are increased by eliminating one radioactive source and integrating drilling and formation evaluation sensors into one collar.

EcoScope PNG technology was developed through a collaboration between Schlumberger and Japan Oil, Gas and Metals National Corporation (JOGMEC), formerly Japan National Oil Corporation (JNOC), who together conducted a research project to develop LWD technology that reduces the need for traditional chemical sources. Its PNG design and comprehensive measurement suite via one collar are key components of EcoScope, the result being LWD technology that enhances operational efficiency, reduces risk and increases confidence in both data interpretation and production and reserve estimation.

The StethoScope* formation pressure-while-drilling tool improves efficiency and reduces risk during drilling operations, providing formation pressure measurements accurately, efficiently and quickly – in less time than needed to make a connection. 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. Additionally, better formation pressure understanding around planned casing points assists in their selection, which can result in significant cost savings by avoiding premature casing runs and incorrect casing placement. Real-time formation pressure measurements also aid geosteering and geostopping decision making, helping to target the most productive zones and determine the optimal drain length for directional wells.

Schlumberger Develops New While-Drilling Services for Improved Drilling Performance, Well Placement-Body-2

The StethoScope

The TeleScope* high-speed telemetry-while-drilling service, when used in conjunction with the Orion* telemetry platform, increases data transmission rates fourfold, compared to the industry standard. Combinable with all Schlumberger LWD tools and rotary steerable systems (RSS), TeleScope provides real-time formation evaluation and true geosteering capability. Through its use, a comprehensive picture of the downhole environment is provided from multiple tools delivering real-time measurements to surface, serving to improve drilling efficiency, reduce risk, optimize well placement and ultimately increase production and recovery.

Schlumberger Develops New While-Drilling Services for Improved Drilling Performance, Well Placement-Body

The TeleScope

* Mark of Schlumberger

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