Schlumberger Technology Corporation

Georgia Tech Research Corporation

Prad Research and Development Nv

Services Petroliers Schlumberger

Schlumberger Holdings Limited

Lennox Reid

Oliver Clinton Mullins

Peter S Hegeman

Anthony R H Goodwin

Charles Woodburn

Edward Harrigan

Soraya Sofia Betancourt

Steven Danyluk

Anatoly Zharin

Elmer Zanoria

Yi-Qiao Song

Peter D Wraight

Jahir A Pabon

Christopher Del Campo

Bhavani Raghuraman

Joel Lee Groves

Go Fujisawa

Ralph Michael D'Angelo

Ahmed Hammami

Cengiz Esmersoy

Felix K Chen

Ashley C Kishino

William Ewan Brennan, Iii

Pierre Henri Campanac

Gale Hyslip Gustavson

Chaur-Jian Hsu

John Allan Nighswander

Gary W Corris

Jeffrey B Aron

Saad Bargach

Richard D Joyce

Darryl Grigor

H Charles Straub

Tara Davies

Syriac George Mathews

Kenneth M Hamall

Kenneth Hamall

Peter David Wraight

Felix Chen

Samples of hydrocarbon are obtained with a coring tool. An analysis of some thermal or electrical properties of the core samples may be performed downhole. The core samples may also be preserved in containers sealed and/or refrigerated prior to being brought uphole for analysis. The hydrocarbon trapped in the pore space of the core samples may be extracted from the core samples downhole. The extracted hydrocarbon may be preserved in chambers and/or analyzed downhole.

Obtaining and evaluating downhole samples with a coring tool

A wireline-conveyed side-wall core coring tool for acquiring side-wall core from a geological formation for performing in-situ side-wall core analysis. The coring tool has a core analysis unit operable to measure geophysical properties of an acquired side-wall core. The measured geophysical properties may be used to determine the success of the acquisition of side-wall cores by the coring tool. The core analysis unit is operable of performing an in-situ interpretation of measured geophysical property of the side-wall core and transmitting in near real-time the measurements or the interpretation results to surface data acquisition and processing apparatus.

Method and apparatus for in-situ side-wall core sample analysis

Methods of assuring that a representative formation and/or fluid sample of a subterranean reservoir is obtained are provided. One method of validating a reservoir fluid sample obtained from a wellbore includes the steps of acquiring a reservoir fluid sample in the wellbore; measuring a property of the fluid sample downhole with a technique to obtain a measured downhole fluid property; replicating the measuring technique used to obtain the measured downhole fluid property to obtain at a remote location from the wellbore with a technique to obtain at least one measured remote location fluid property; validating the fluid sample through comparison of the measured downhole fluid property and the at least one measured remote location fluid property.

Reservoir sample chain-of-custody

A downhole tool positionable in a wellbore penetrating a subterranean formation is disclosed. The downhole tool includes a housing, a coring bit and a sample chamber. The coring bit is disposed in the housing and is extendable therefrom for engaging a wellbore wall. The sample chamber stores at least two formation samples obtained with the coring bit and includes at least two portions for separately storing the formation samples.

Downhole formation testing tool

A marking system and method for a well site sample is provided. The system includes a container for collecting the well site sample, a marker applied to the container and a scanner adapted to read the marker. Data may be uploaded to and/or downloaded from the marker.

Marking system and method

A non-vibrating capacitance probe for use as a non-contact sensor for tribological wear on a component. The device detects surface charge through temporal variation in the work function of a material. A reference electrode senses changing contact potential difference over the component surface, owing to compositional variation on the surface. Temporal variation in the contact potential difference induces a current through an electrical connection. This current is amplified and converted to a voltage signal by an electronic circuit with an operational amplifier.

Non vibrating capacitance probe for wear monitoring

Embodiments of the invention relate to a wireline assembly that includes a coring tool for taking coring samples of the formation and a formation testing tool for taking fluid samples from the formation, where the formation testing tool is operatively connected to the coring tool. In some embodiments, the wireline assembly includes a low-power coring tool. In other embodiments, the coring tool includes a flowline for formation testing.

In one aspect, the invention involves an acoustic logging tool for performing acoustic investigations of subsurface geological formations. In one embodiment, the tool comprises a generally longitudinally extending tool body adapted for positioning in a borehole. At least one transmitter is mounted on the tool body to emit acoustic energy. At least one receiver is also mounted on the tool body at a location axially displaced from the at least one transmitter. The receiver is adapted to receive acoustic energy. An attenuator is also positioned along the body and includes at least one cavity having a plurality of particles disposed therein. The attenuator as disclosed herein may be applied to other logging tools for protecting tool components and enhancing measurement quality. Methods for attenuating acoustic energy transmitted through the body of an acoustic logging tool or other logging tools are also disclosed.

Structures and methods for damping tool waves particularly for acoustic logging tools

Non-vibrating capacitance probe for wear monitoring

Growing community of inventors

Houston, TX, United States of America

Lennox Reid