Abstract: 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.

Abstract: A downhole local solid particles counting probe (1) for counting solid particles (101) in a fluid (100) present in a hydrocarbon well in production comprising: an elongated and flexible protective tube (2) defining an internal cavity (5) terminating by a membrane wall (3) defining a tip (4), the protective tube (2) and the membrane wall (3) isolating the internal cavity (5) from the fluid (100) of the hydrocarbon well, the protective tube (2) and membrane wall (3) are made of metal or metal alloy and have a thickness (ei) such as to resist to the downhole hydrocarbon well pressure; a passive acoustic sensor (6) mounted inside the internal cavity (5), the passive acoustic sensor (6) having a front side (7) mechanically coupled on the membrane wall (3) of the tip (4); a characteristic dimension of the passive acoustic sensor (6) is similar to solid particles (101) average characteristic dimension, ranging from 0.5 mm to 1.

Abstract: A downhole optical chemical compound monitoring device (30) arranged to be integrated in a mandrel (20) of a drilling system, for monitoring a chemical compound in a drilling fluid (14B) circulated through a well (7, 8), the downhole optical chemical compound monitoring device (30) comprising: an analysis cell part (31) comprising an open cavity (40, 140) into which the drilling fluid (14B) is free to flow; a first optical probe (41A, 141A) coupled to a light source (157) and arranged to transmit a light energy into the open cavity (40, 140); a second optical probe (41B, 141B) coupled to a detector (158) and arranged to produce in use a signal resulting from an interaction of the drilling fluid (14B) present in the open cavity (40, 140) with said light energy, indicative of a quantity of chemical compound present in the drilling fluid (14B); each of said optical probes is mounted through a wall (38A, 38B, 138A, 138B) of the analysis cell part (31) in a sealed manner and has a tip (45A, 45B), the tip being nee

Abstract: 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.

Abstract: A downhole fluid properties optical analysis probe (1) to analyze at least one property of a multiphase flow mixture (100) flowing in a hydrocarbon well (51) has an elongated cylindrical body shape and comprises an optical tip (5) at one end of the elongated cylindrical body arranged to be in contact with the multiphase flow mixture (100), and an optoelectronics module (11) at another end of the elongated cylindrical body arranged to be separated from the multiphase flow mixture (100) and coupled to the optical tip (5) by an optical fiber bundle.

Abstract: A depth positioning method to position a production logging tool (1) and a measurement log in a hydrocarbon well (3) in production obtained by means of the tool, the depth positioning method comprises: generating (S1, S2, S3, S1?, S2?, S3?, S11, S12, S13) a set of magnetic measurements (MAG1, MAG) of a depth portion of the hydrocarbon well from a first passive magnetic sensor along the depth portion of the hydrocarbon well, the set of magnetic measurements comprising magnitude and/or direction measurements of the magnetic field that forms a characteristic magnetic field pattern representative of a surrounding magnetic environment of the hydrocarbon well all along the depth portion; comparing (S4, S4?, S14) the set of magnetic measurements (MAG1, MAG) to another set of magnetic measurements (MAG_R, MAG2), the other set of magnetic measurements being a reference set of magnetic measurements generated either by a same or similar passive magnetic sensor deployed and run in the hydrocarbon well earlier, or by a

Abstract: A production logging tool (1) to analyze at least one property of a multiphase fluid mixture (MF) flowing in a hydrocarbon well (2) has an elongated cylindrical housing (10, 12, 13, 14) shape and comprises a central pressure-resistant rigid housing (10, 12, 13, 14) carrying a centralizer arrangement (11) comprising multiple external centralizer arms (15, 16) circumferentially distributed about said housing (10, 12, 13, 14) and adapted for contact with a production pipe wall (6) of a hydrocarbon well (2) and operable from a retracted configuration into a radially extended configuration, the centralizer arms (15, 16) being coupled at a first side to the housing (10, 12, 13, 14) and at a second side to a first sliding sleeve (21) and a first spring (24).

Abstract: A downhole fluid properties optical analysis probe (1) to analyze at least one property of a multiphase flow mixture (100) flowing in a hydrocarbon well (51) has an elongated cylindrical body shape. It comprises an optical tip (5) at one end of the elongated cylindrical body arranged to be in contact with the multiphase flow mixture (100). It further comprises an optical link (6) adapted for a connection with an electronics module (11) at another end of the elongated cylindrical body arranged to be separated from the multiphase flow mixture (100). The optical tip (5) is coupled to the optical link (6) through a removable and watertight coupling (7).

Abstract: A downhole fluid properties optical analysis probe (1) to analyze at least one property of a multiphase flow mixture (100) flowing in a hydrocarbon well (51) has an elongated cylindrical body shape and comprises an optical tip (5) at one end of the elongated cylindrical body arranged to be in contact with the multiphase flow mixture (100), and an optoelectronics module (11) at another end of the elongated cylindrical body arranged to be separated from the multiphase flow mixture (100) and coupled to the optical tip (5) by an optical fiber bundle.

Abstract: 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.

Abstract: A downhole ultrasonic transducer (10) used to transmit and/or receive ultrasonic waves in a hydrocarbon well where a fluid is present comprises: a metal housing (11) defining an internal cavity (12) isolated from the fluid of the hydrocarbon well (100) by a membrane wall (13) made of metal or metal alloy; a piezoelectric element (14) mounted inside the internal cavity (12), the piezoelectric element (14) having a front side (20) mechanically coupled on the membrane wall (13); wherein: the internal cavity (12) is at a pressure unrelated to a hydrocarbon well pressure; a back side (21) of the piezoelectric element (14) is arranged to be free to oscillate in the internal cavity (12) so as to generate a high acoustic impedance mismatch between the piezoelectric element (14) and the internal cavity (12) at the back side (21) and to maximize acoustic transmission at the front side (20); and a thickness (ei) of the membrane wall (13) is such that there is a common resonance between the membrane wall and th

Abstract: A downhole fluid properties analysis device (51) is connectable to a downhole sampling flow line (8). The downhole sampling flow line (8) has an internal diameter between 2 to 15 mm adapted to let flow the fluid (3) to be analyzed. The fluid (3) is a hydrocarbon multiphase fluid mixture from a hydrocarbon subsurface reservoir (4).

Abstract: Probe (11) for producing signals (u(t)) indicative of a local phase composition (O, W) of a fluid (10) flowing in a well (51), comprising a body (13) of electrically insulating material having a tip (15) adapted for contact with the fluid (10), at least two electrodes (14a, 14b, 14c, 14d) of conductive material located in said body (13) on opposite sides relatively to a central axis (XX?) of the body (13) and insulated from each other, said electrodes (14a, 14b, 14c, 14d) having ends exposed to the fluid (10) located on either side of said tip (15).

Abstract: A fluid pressure measurement sensor (11) comprises a microelectromechanical system (MEMS) chip (23). The MEMS chip (23) comprises two lateral walls (56), a sensitive membrane (49) connected to said lateral walls (56) and sealed cavity (9). The exterior surfaces of the lateral walls (56) and the sensitive membrane (49) are exposed to the fluid pressure. The lateral walls (56) are designed to subject the sensitive membrane (49) to a compression stress transmitted by the opposite lateral walls (56) where said lateral walls (56) are connected to the sensitive membrane (49) such that the sensitive membrane (49) works in compression only. The MEMS chip (23) also comprises a stress detection circuit (31) to measure the compression state of the sensitive membrane (49) which is proportional to the fluid pressure.

Abstract: Apparatus for optically determining the presence of carbon dioxide within a fluid, said apparatus comprising:—a light emitting source, an optical sensing probe in contact with the fluid to analyze; optical light transmitting means in order to convey the light emitted from the light emitting source to the optical sensing probe and the light reflected by the optical sensing probe to means to discriminate between wavelengths of light beams reflected by the optical sensing probe;—means to convert wavelengths discriminated light beams into measurement data indicating presence of carbon dioxide within the fluid, wherein the optical sensing probe comprises a tip working as attenuated total reflection (ATR) absorber within the infrared wavelength.