Openfield

Openfield Sa

Linda Abbassi

Eric P Donzier

Emmanuel Tavernier

A flowmeter measures a fluid velocity and/or direction of a moving multiphase fluid within a hydrocarbon well. The flowmeter includes a microwave front end module comprising transmit and receive antennas and a microwave circuit. The transmit antenna transmits electromagnetic signals towards the fluid at a high frequency ranging from 10 to 100 GHz. The flowmeter includes an analog electronics module converting an analog doppler signal successively into an amplified analog doppler signal and a digital doppler signal. The flowmeter includes a digital processing module comprising a Fast Fourier Transform algorithm for processing the digital doppler signal into a Doppler frequency spectrum. The Doppler spectrum contains information indicative of the fluid velocity and/or direction. A protective shell protects the modules from multiphase fluid. The protective shell comprises a first part positioned over the antennas and being transparent to electromagnetic signals, and a second part being opaque to electromagnetic signals.

Microwave doppler flowmeter for hydrocarbon wells

A depth positioning method to position a production logging tool () and a measurement log in a hydrocarbon well () in production obtained by means of the tool, the depth positioning method comprises:

Method and device for depth positioning downhole tool and associated measurement log of a hydrocarbon well

A guiding sub-section () of a production logging tool () comprises a central rigid stem () having a first mechanical connector () at one end and a second mechanical connector () at an another end, and carrying a roller deploying arrangement () comprising multiple external articulated arms (A,B,C) circumferentially distributed about said body, each articulated arm comprising a roller assembly (A,B,C) adapted for contact with a wall () of the hydrocarbon well () and operable from a retracted configuration into a radially extended configuration. The roller assembly (A,B,C) comprises an arm hinge () coupling a first arm part and a second arm part of each articulated arm (A,B andC) and having an arm hinge axis (AA') substantially perpendicular to the longitudinal axis (XX&#x2032;), a roller bearing () secured onto the arm hinge () and having a roller axis (BB&#x2032;) angled with respect to the hinge axis (AA&#x2032;), and an anti-slippage friction roller () received onto the roller bearing () in a rotation free manner.

Production logging tool and downhole fluid analysis probes deploying method

A mini-spinner flowmeter measures a fluid linear velocity and/or a fluid direction of a fluid present in a hydrocarbon well. It comprises an impeller formed with a plurality of axially extending vanes longitudinally secured to a shaft, the shaft extending along a longitudinal axis, the impeller being caused to rotate at an impeller angular velocity depending on the fluid linear velocity and in a rotational direction depending on the fluid direction; and a support having a bearing positioned on each end of the shaft and a through-hole securing an optical section. The vanes are reflective such that, in use, a light energy emitted by an emitting optical fiber and reflected backward by anyone of the vanes is received by a first receiving optical fiber and/or a second receiving optical fiber, the reflected light energy containing information indicative of the fluid linear velocity and/or the fluid direction.

Mini-spinner flowmeter and downhole tool comprising an array of mini-spinner flowmeters for operation in hydrocarbon well

A downhole local solid particles counting probe () for counting solid particles () in a fluid () present in a hydrocarbon well in production comprising:

Downhole local solid particles counting probe, production logging tool comprising the same and sand entry investigation method for hydrocarbon wells

A downhole optical chemical compound monitoring device () arranged to be integrated in a mandrel () of a drilling system, for monitoring a chemical compound in a drilling fluid (B) circulated through a well (), the downhole optical chemical compound monitoring device () comprising:

Downhole optical chemical compound monitoring device, bottom hole assembly and measurements-while-drilling tool comprising the same, and method of optically monitoring chemical compound downhole during drilling

A downhole fluid properties optical analysis probe () to analyze at least one property of a multiphase flow mixture () flowing in a hydrocarbon well () has an elongated cylindrical body shape. It comprises an optical tip () at one end of the elongated cylindrical body arranged to be in contact with the multiphase flow mixture (). It further comprises an optical link () adapted for a connection with an electronics module () at another end of the elongated cylindrical body arranged to be separated from the multiphase flow mixture (). The optical tip () is coupled to the optical link () through a removable and watertight coupling (). The removable and watertight coupling comprises a first portion () of a protective tube () resistant to downhole conditions, said first portion () enclosing the optical link () and comprising at least one first ring bulge () close to a coupling interface (), and a second portion () of the protective tube () partially enclosing the optical tip () such as to let a distal end of the optical tip () in contact with the multiphase flow mixture (), said second portion () comprising at least one second ring bulge () close to the coupling interface (). It further comprises a coupling tube () surrounding facing ends of the first portion () and the second portion (), said coupling tube () being adjusted in size to fit in between said first and second ring bulges (), and a coupling and protecting sheath () enclosing said first ring bulge (), coupling tube () and second ring bulge () in a watertight manner.

Downhole fluid properties optical analysis probe having a removable optical tip

A downhole ultrasonic transducer () used to transmit and/or receive ultrasonic waves in a hydrocarbon well where a fluid is present comprises:

Downhole acoustic transducer, downhole probe and tool comprising such a transducer

A production logging tool to analyze at least one property of a multiphase fluid mixture flowing in a hydrocarbon well has an elongated cylindrical housing shape and comprises a central pressure-resistant rigid housing carrying a centralizer arrangement. The production logging tool further comprises a deploying arrangement nested within the centralizer arrangement comprising deploying arms circumferentially positioned between two centralizer arms, and downhole fluid properties analysis probes secured on each deploying arm such as to expose a tip of said, at least one, probe to the multiphase fluid mixture flowing in the hydrocarbon well. The deploying arrangement follows radial movements imposed by the centralizer arrangement to radially and/or angularly position the tip of the probes in a first circumferential zone of a hydrocarbon well section substantially perpendicular to a longitudinal axis of the well.

Production logging tool and downhole fluid analysis probes deploying method, in particular for deviated and horizontal hydrocarbon well

Probe for producing signals indicative of a local phase composition of a fluid flowing in a well, comprising a body of electrically insulating material having a tip adapted for contact with the fluid, at least two electrodes of conductive material located in the body on opposite sides relatively to a central axis of the body and insulated from each other, the electrodes having ends exposed to the fluid located on either side of the tip.

Probe, sonde and method for producing signals indicative of local phase composition of a fluid

A downhole fluid properties optical analysis probe () to analyze at least one property of a multiphase flow mixture () flowing in a hydrocarbon well () has an elongated cylindrical body shape and comprises an optical tip () at one end of the elongated cylindrical body arranged to be in contact with the multiphase flow mixture (), and an optoelectronics module () at another end of the elongated cylindrical body arranged to be separated from the multiphase flow mixture () and coupled to the optical tip () by an optical fiber bundle. The optoelectronics module () comprises at least one light source () arranged to emit electromagnetic radiations in a wavelength range such that reflectance occurs when gas (G) is present at the optical tip () and fluorescence occurs when oil (O) is present at the optical tip (), at least one reflectance light detector () arranged to be responsive to a reflectance light and to provide a reflectance signal (U()) and at least one fluorescence light detector () arranged to be responsive to a fluorescence light and to provide a fluorescence signal (U()). The optical fiber bundle comprises at least one first optical fiber () coupling the light source () to the optical tip (), at least one second optical fiber () coupling the optical tip () to the reflectance light detector (), and at least one third optical fiber () coupling the optical tip () to the fluorescence light detector (), the at least one first, second and third optical fibers being mounted together into a protective tube () resistant to downhole conditions.

Downhole fluid properties analysis probe, tool and method

A downhole fluid properties analysis device connectable to a downhole sampling flow line having an internal diameter between 2 to 15 mm adapted to let flow the fluid, a hydrocarbon multiphase fluid from a hydrocarbon subsurface reservoir, to be analyzed. The analysis device includes an analysis pipe portion and a first optical probe arranged to transmit a light into the fluid and a second optical probe, connected to a spectrometer and arranged to produce a signal resulting from an interaction of the fluid with said light indicative of the downhole fluid properties. Each optical probe has an elongated body mounted through the wall of the analysis pipe portion and a needle-shaped tip with an external diameter less than 1 mm. The tips of the probes project into a flow section of the analysis pipe portion such that the first tip faces the second tip.

Growing community of inventors

Montigny le Bretonneux, France

Linda Abbassi