Baker Hughes Corporation

Halliburton Energy Services, Inc.

Marcelo Civarolo

Christopher Michael Jones

Rocco DiFoggio

Otto N Fanini

Stanislav W Forgang

Anthony Herman Van Zuilekom

Darren George Gascooke

Michel Joseph LeBlanc

Borislav J Tchakarov

Farhat Shaikh

James Cernosek

Michael Shammai

Jorge Maxit

James C Hunziker

Francisco Galvan-Sanchez

Jianghui Wu

Bernardo E Pohl

Angus J Simpson

Christopher Wayne Berry

Wade Bullock

Marvin L Raney

Sefer B Coskun

Russell W McEacharn

A densitometer in the present disclosure comprises a measurement module that is calibrated to estimate sample fluid density with high accuracy and minimized sensitivity to temperature of tube and clamp components in the densitometer. The densitometer measures sample fluid density by vibrating the sample fluid and measuring the resonant frequency of the sample fluid, then estimating the sample fluid density based on this resonant frequency. The measurement module is calibrated specific to dissimilar tube and clamp materials. The tube and the clamp of the densitometer have materials are chosen to be cost-effective based on the specifications of the densitometer system and to have coefficients of thermal expansion (CTEs) which reduce temperature dependence of the resonant frequency of the sample fluid inside of the densitometer.

Densitometer with dissimilar tube and clamp materials

A focused sampling method comprising: allocating fluid flow from a guard zone through a guard line and from a sample zone through a sample line, the guard zone being positioned at least partially concentrically about the sample zone and the guard zone, and the sample zone being in fluid communication with a formation; pumping, via a common line, a combined fluid flow from the formation through to a discard line for a pre-sampling time period, the combined flow comprising the fluid flow allocated from the guard zone into the guard line and the fluid flow allocated from the sample zone into the sample line; subsequent the pre-sampling time period, discontinuing flow from the guard line into the common line, such that the combined flow comprises only the fluid flow from the sample line; and introducing the combined flow comprising the fluid flow from the sample line into a sample chamber.

Focused formation sampling method and apparatus

In one aspect, an apparatus for use in a wellbore formed in a formation is disclosed that in one embodiment includes a device for supplying a hydraulic fluid under pressure to a common hydraulic line, a first pump in hydraulic communication with the common hydraulic line via a first variable fluid control device, a second pump in hydraulic communication with the common hydraulic line via a second variable fluid control device, and at least one controller that controls flow of the hydraulic fluid from the first variable flow control device to the first pump and the flow of the hydraulic fluid from the second variable flow control device to the second pump to independently control the operation of the first pump and the second pump. In another aspect, the first pump is coupled to a first probe for extracting fluid from the formation and the second pump is coupled to a second probe for extracting the fluid from the formation.

Apparatus and method for obtaining formation fluid samples utilizing independently controlled devices on a common hydraulic line

An apparatus for controlling a fluid flow in a borehole may include a tool body that retrieves a fluid sample from a subsurface formation. The tool body has a fluid conduit having an inlet for receiving the fluid sample and an outlet for conveying the fluid sample to a selected location. A mandrel selectively blocks flow across the fluid conduit; and a seal disposed on the mandrel includes at least one chevron seal element that cooperates with the mandrel to selectively block flow across the fluid conduit.

Dirty fluid valve with chevron seal

An apparatus made according to one embodiment may include a first chamber configured to receive fluid under pressure and to compress a gas in a second chamber in pressure communication with the first chamber, wherein the second chamber is configured to discharge the fluid out from the first chamber when pressure of the fluid in the first chamber is reduced.

Apparatus and method for formation testing

A logging while drilling and wire line system for analyzing the concentration of carbon dioxide or another substance, in a sample down hole in a bore hole. A chamber is filled with a sample that may be fluid, or condensate and gas. The interior chamber volume is selectably expandable for decompression of the sample. The sample may alternately be decompressed by allowing a sample at formation pressure to enter the chamber at a lower pressure, thereby decompressing the sample. A sensor measures the absorbance, transmittance or attenuated total reflectance of the infrared light. Mid and near infrared light is utilized to identify carbon dioxide, water and a plurality of hydrocarbons. A wiper cleans the transmitter and sensor between readings to reduce measurement error caused by fluid sample contamination.

Down hole gas analyzer method and apparatus

Growing community of inventors

The Woodlands, TX, United States of America

Marcelo Civarolo