簡介：最近，油田服務(wù)公司巨頭斯倫貝謝發(fā)布了兩項新的鉆井技術(shù)，通過應(yīng)用這兩項技術(shù)，能夠改進地面與地下的信息交流，可以加快鉆井速度，延伸鉆井深度。
Oilfield services giant Schlumberger recently introduced two new drilling technologies that improve communication between the surface and downhole, allowing faster and farther drilling.
Orion II telemetry platform
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When used with Schlumberger's EcoScope LWD service, the Orion II telemetry platform allows for transmission of multiple images, along with triple-combo measurement curves, even at penetration rates exceeding 250 ft per hour.
Schlumberger’s new Orion II telemetry platform reportedly provides more reliable communication with bottomhole assemblies (BHAs) while drilling at higher penetration rates and/or longer boreholes. The platform is housed in a measurement-while-drilling (MWD)/logging-while-drilling (LWD) tool and combines new data-compression technology with new surface and downhole sensors that modulate and demodulate signals and overcome interference from drilling and rig noise, even in harsh environments. Downlink commands are sent in real time while drilling, without affecting the delivery or quality of measurement data being relayed back to the surface.
“With Orion II, more quality data and higher-resolution images can be transmitted at greater depths, enabling better drilling decisions to be made in real time,” said Ian Falconer, Schlumberger’s Marketing Manager for Drilling and Measurements. “Both drilling efficiency and geosteering accuracy are enhanced by the system, which holds the records for deepest downlink, deepest LWD and MWD transmission, and deepest directional control.”
The company stated that the recent extended-reach drilling record by Maersk Oil Qatar was successfully drilled and geosteered using Schlumberger tools running the Orion II telemetry platform.
PowerDrive vorteX RT RSS
Schlumberger also launched its new rotary steerable system (RSS) with wireless communicator known as the PowerDrive vorteX RT. The modular system transmits near-bit information above and below the BHA components such that accurate targets can be reached more quickly.
Induction-propagation antenna coils are used to generate and detect an electromagnetic field. The bi-directional, half-duplex communication can run in any formation type, and includes real-time gamma ray, resistivity, and neutron density information.
In addition, the RSS reduces stick/slip and maximizes torque, weight-on-bit, and penetration rates, allowing operators to optimize their drilling performance such that rig time, and hence cost, is reduced. “The ability to now communicate over a drilling motor power section enhances geosteering BHA capabilities and lets you place third-party hardware anywhere on the string,” said Falconer. “It is possible to fine-tune the borehole trajectory while drilling at high speed.”
The company highlighted one field application in which a Middle East operator was able to drill a 4,567-ft section with the new RSS in one run with no nonproductive time and a reduction in stick/slip from 100 to 25 revolutions per minute. This resulted in a 33% higher rate of penetration than the field average, with the well setting a field record for the longest 8 ½-in. hole drilled in a single run.
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