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Sidewall Coring

The efficient way to sample your reservoir

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Understand the reservoir rock and its fluid contents

Complementing logging and wireline formation testing, sidewall coring is a faster, cost-effective alternative to conventional cores and avoids the ambiguity introduced by the depth uncertainty of drill cuttings.

Rotary sidewall cores are recovered with miniature diamond-tipped drill bits that preserve the rock pore structure when they cut a round plug of the formation directly from the borehole wall. Because rock integrity is maintained, a wealth of geological, geomechanical, and petrophysical data can be obtained through laboratory analysis of the sidewall cores.

XL-Rock large volume rotary coring service

Sidewall cores provide information about your reservoir rock properties that is not otherwise readily available.

Drill String and Sidewall Coring
This Defining Series article sets out the methods of acquiring cores using drill pipe and wireline.

Sidewall Coring Offerings

XL-Rock
Large-volume rotary sidewall coring service
Close the gap between continuous core and sidewall cores.
MSCT
Mechanical sidewall coring tool
Recover 50 sidewall cores in one trip without the damage associated with percussion tools.
CST
Chronological sample taker
Collect up to 90 sidewall core samples in one trip.
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Industry Article The Defining Series: Downhole Coring

Ground truth for calibration of well logs.

Case Study Tight Rock Analysis of Shale Sidewall Cores from XL-Rock Rotary Sidewall Coring Service

Sample volume more than 300% of previous-generation technology with core location confirmed by FMI formation microimager.

Brochure XL-Rock Large-Volume Rotary Sidewall Coring Service

Retrieve up to 50 1.5-in-OD x 2.5-in-long sidewall core samples from a single trip.

Industry Article Large-Volume Sidewall Cores

The Schlumberger XL-Rock large-volume rotary sidewall-coring service closes the gap between core plugs from continuous conventional core and wireline-conveyed rotary sidewall cores.
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Book Wireline Log Quality Control Reference Manual (LQCRM)

Covers acquisition of high-quality data at the wellsite and its delivery within defined standards.

Product Sheet CST Chronological Sample Taker

Collect up to 90 core samples in one trip.

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