Weatherford/lamb, Inc.

Other

Ronald E Bothner

David Michael Haugen

Paul B Wilson

Frederick Thomas Tilton

David Graham Hosie

Paul James Wilson

John Douglas Roberts

Michael Nero

Ronald B Collins

David Nuth

John David

The present invention generally relates to an apparatus and a method for conveying and operating tools into a wellbore. In one aspect, a method of performing a downhole operation in a wellbore is provided. The method includes pushing a continuous rod into the wellbore, wherein the continuous rod includes a member disposed therein. The method further includes positioning the continuous rod proximate at a predetermined location in the wellbore and performing the downhole operation. In yet another aspect, a system for performing a downhole operation in a wellbore is provided.

Apparatus and methods for operating a tool in a wellbore

A well logging instrument that has a neutron source for irradiating earth formations traversing a borehole used in deriving useful information pertaining to said formations. Three detectors are mounted in a spaced-apart vertical relationship within a pressure-resistant housing. The detectors nearest and farthest from the neutron source detect thermal neutrons while the third detector from the neutron source detects a rare earth compensated aggregate capture gamma ray spectrum. By comparing the irradiated formations as detected by the three detectors, certain formation fluid, matrix, and pore volume parameters are derived. Also, by comparing the count rates of high and low energy ranges of the third detector in earth coal formation matrix, an ash volume is determined. From this value, a bulk density is derived from the corresponding earth coal formation.

Irradiated formation tool (IFT) apparatus and method

A well logging tool has a neutron source for irradiating formation surrounding a borehole. Two detectors are mounted in a spaced-apart vertical relationship within the tool pressure-resistant housing. Each detector detects capture gamma radiation across the entire gamma ray energy spectrum, windows are set in this spectrum to separate two distinct energy ranges, thereby generating a total of four independent sets of signals, two for each detector. One set of signals is indicative of the hydrogen content and insensitive to the chlorine content of the irradiated formation. The second set of signals is indicative of the hydrogen plus the chlorine content of the irradiated formation. By comparing the sets of signals in two proportional energy ranges, the logging tool allows to generate a log that helps determine the presence or absence of hydrocarbon or salt water in the formation.

Dual compensated chlorine logging tool

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The Woodlands, TX, United States of America

Ronald E Bothner