The present invention relates to a power amplification device capable of being powered by a single input voltage and comprising a switching module comprising a first discharge electrode and a second discharge electrode. The power amplification device comprises a triggering module configured to convert the input voltage into a first supply voltage and a second supply voltage, detect an activation event, generate an activation signal from the first supply voltage when an activation event has been detected, generate a pulse command from the second supply voltage when an activation signal has been generated, and transmit the generated pulse control to the triggering means of the switching module so that it triggers the formation of an electric arc between the first discharge electrode and the second discharge electrode.
H01T 2/02 - Spark gaps comprising auxiliary triggering means comprising a trigger electrode or an auxiliary spark gap
H01T 1/22 - Means for starting arc or facilitating ignition of spark gap by the shape or the composition of the electrodes
H01T 15/00 - Circuits specially adapted for spark gaps, e.g. ignition circuits
H03K 3/537 - Generators characterised by the type of circuit or by the means used for producing pulses by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback the switching device being a spark gap
H01T 1/20 - Means for starting arc or facilitating ignition of spark gap
2.
Seismic wave generating tool, such as a spark gap of an electric arc generation device
A seismic wave generating tool, such as a spark gap, of an electric arc generation device includes an upper part and a lower part defining a discharge chamber between them, at least one retaining arm connecting the upper part to the lower part, first and second electrodes respectively associated with the upper and lower parts and arranged in the discharge chamber. The retaining arm comprises an electrically insulating part facing the electrodes. The tool includes a first deployable device implementing a current return and connecting the upper part to the lower part. The first deployable device is configured to be in a retracted state and in a deployed state in which it is at a distance from the discharge chamber.
The present invention relates to a power amplification device (10) capable of being powered by a single input voltage and comprising a switching module (100) comprising a first discharge electrode (110) and a second discharge electrode (120). The power amplification device (10) comprises a triggering module (200) configured to convert the input voltage into a first supply voltage (BT1) and a second supply voltage (BT2), detect an activation event, generate an activation signal from the first supply voltage (BT1) when an activation event has been detected, generate a pulse command from the second supply voltage (BT2) when an activation signal has been generated, and transmit the generated pulse control to the triggering means (130) of the switching module (100) so that it triggers the formation of an electric arc (A2) between the first discharge electrode (110) and the second discharge electrode (120).
The present invention relates to a power amplification device (10) capable of being powered by a single input voltage and comprising a switching module (100) comprising a first discharge electrode (110) and a second discharge electrode (120). The power amplification device (10) comprises a triggering module (200) configured to convert the input voltage into a first supply voltage (BT1) and a second supply voltage (BT2), detect an activation event, generate an activation signal from the first supply voltage (BT1) when an activation event has been detected, generate a pulse command from the second supply voltage (BT2) when an activation signal has been generated, and transmit the generated pulse control to the triggering means (130) of the switching module (100) so that it triggers the formation of an electric arc (A2) between the first discharge electrode (110) and the second discharge electrode (120).
An electrical tool for well stimulation includes a first electrode and a second electrode. The second electrode being at the level of a first segment and a second segment of the tool. A peripheral electrode insulated electrically from the first electrode. The first segment and the second segment are linked by an articulated link inside which is arranged a coaxial cable running from the first segment to the second segment. The coaxial cable includes an electrically conducting outer envelope insulated electrically from an electrically conducting central core. The tool includes a first electrical contact between the central core of the coaxial cable and the first electrode, and a second electrical contact between the outer envelope of the coaxial cable and the second electrode.
G01V 1/157 - Generating seismic energy using spark dischargesGenerating seismic energy using exploding wires
E21B 49/00 - Testing the nature of borehole wallsFormation testingMethods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
6.
DIAGNOSTIC DEVICE FOR A SEISMIC PROBE AND ASSOCIATED METHOD
The invention relates to a diagnostic device (10) of a seismic probe (1), said probe comprising, in an elongate tubular body (9), an electronic module (3), an array of capacitors (4) and a spark gap (5) suitable for generating a shock wave in a drilling well (2), said device including at least one sensor (11) suitable for measuring at least one parameter of the shock wave in accordance with time, characterised in that said sensor is attached to an inner surface of a wall of the tubular body, at a predetermined distance other than zero from the spark gap in the direction of the electronic module. The invention also relates to a diagnostic method using the signals from the sensor (11).
The invention relates to a diagnostic device (10) of a seismic probe (1), said probe comprising, in an elongate tubular body (9), an electronic module (3), an array of capacitors (4) and a spark gap (5) suitable for generating a shock wave in a drilling well (2), said device including at least one sensor (11) suitable for measuring at least one parameter of the shock wave in accordance with time, characterised in that said sensor is attached to an inner surface of a wall of the tubular body, at a predetermined distance other than zero from the spark gap in the direction of the electronic module. The invention also relates to a diagnostic method using the signals from the sensor (11).
a spark gap installed at a second end of the body and linked to the capacitor bank, suitable for generating a seismic wave upon the release of the energy stored by the capacitor bank, wherein: the capacitor bank is formed from cylindrical capacitors (621) including bases each having a different polarity, the capacitors are mounted coaxially to each other, parallel to the main axis of the body, and the capacitors are electrically linked into at least two groups of capacitors connected in parallel, each group of capacitors having a positive pole and a negative pole, the groups being arranged in the body such that the facing poles of two adjacent groups are of the same polarity.
E21B 28/00 - Vibration generating arrangements for boreholes or wells, e.g. for stimulating production
G01V 1/157 - Generating seismic energy using spark dischargesGenerating seismic energy using exploding wires
E21B 43/00 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
E21B 49/00 - Testing the nature of borehole wallsFormation testingMethods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
9.
Device for stimulation of wells and diagnostic method for such a stimulation device
A device (20) for stimulation of wells, includes a tool (200) including a capacitive element (205) and a stimulation head (210). The device further includes switching elements capable of placing the tool (200) in at least two states: i) a charging state in which the capacitive element and the stimulation head are electrically in series between the first terminal and the second terminal of the tool, in such a way that the electrical source charges the capacitive element through the stimulation head (210), and ii) a discharging state in which the capacitive element discharges through the stimulation head (210). Also, a diagnostic method for such a device (20) for stimulation of wells.
c) of the tool (200) are arranged in series with their connection faces facing each other, and in such a way that the connection faces facing each other of each adjacent pair or capacitive elements correspond to terminals of the same polarity.
E21B 28/00 - Vibration generating arrangements for boreholes or wells, e.g. for stimulating production
E21B 43/00 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
H01G 4/38 - Multiple capacitors, i.e. structural combinations of fixed capacitors
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
E21B 47/14 - Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
H02J 7/34 - Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
The present invention proposes a seismic wave generating tool, such as a spark gap (2) of a device for generating electric arcs comprising: an upper part (4) and a lower part (6), the upper part (4) and the lower part (6) defining between themselves a discharge chamber (8), at least one retaining arm (18) linking the upper part (4) to the lower part (6), a first electrode (10) associated with the upper part (4) and a second electrode (14) associated with the lower part (6), both disposed in the discharge chamber (8). According to the present invention, the retaining arm (18) comprises an electrically insulating part opposite the electrodes (10, 14) and a current return is carried out through a first deployable device linking the upper part (4) to the lower part (6), the first deployable device being able to exhibit a retracted state and a deployed state in which it is separated from the discharge chamber (8).
The present invention proposes a seismic wave generating tool, such as a spark gap (2) of a device for generating electric arcs comprising: an upper part (4) and a lower part (6), the upper part (4) and the lower part (6) defining between themselves a discharge chamber (8), at least one retaining arm (18) linking the upper part (4) to the lower part (6), a first electrode (10) associated with the upper part (4) and a second electrode (14) associated with the lower part (6), both disposed in the discharge chamber (8). According to the present invention, the retaining arm (18) comprises an electrically insulating part opposite the electrodes (10, 14) and a current return is carried out through a first deployable device linking the upper part (4) to the lower part (6), the first deployable device being able to exhibit a retracted state and a deployed state in which it is separated from the discharge chamber (8).
A spark-gap of the invention comprises: a first body supporting a first electrode mounting connected to a first electrode having a first electrode end, a second body supporting a second electrode mounting connected to a second electrode placed so as to face the first electrode end, and a connection arm connecting the first body to the second body. The first body and the second body have a generally cylindrical outer shape and are aligned along a common longitudinal axis. The first electrode end is offset, relative to the longitudinal axis, toward the side opposite the connection arm. The invention also relates to an electric arc generation device comprising such a spark-gap.
A spark-gap of an electric arc generation device for creating a seismic wave comprises: a first electrode connected to a first electrode mounting, a second electrode connected to a second electrode mounting and having a concave surface facing the first electrode and a diameter substantially greater than the diameter of the first electrode, and at least one connection arm connecting the first electrode mounting to the second electrode mounting. The disclosure also relates to an electric arc generation device comprising such a spark-gap.
The present invention relates to an electrical tool (20) for well (30) stimulation, comprising a first electrode (21) and a second electrode (22), said second electrode being, at the level of a first segment (241) and of a second segment (242), a peripheral electrode insulated electrically from said first electrode. Furthermore, the first segment and the second segment are linked by an articulated link (25) inside which is arranged a coaxial cable (26) running from the first segment (241) to the second segment (242), said coaxial cable comprising an electrically conducting outer envelope (29) insulated electrically from an electrically conducting central core (27), the tool (20) comprising means of electrical contact between the central core (27) of the coaxial cable and the first electrode (21), and means of electrical contact between the outer envelope (29) of said coaxial cable and the second electrode (22).
The present invention relates to an electrical tool (20) for well (30) stimulation, comprising a first electrode (21) and a second electrode (22), said second electrode being, at the level of a first segment (241) and of a second segment (242), a peripheral electrode insulated electrically from said first electrode. Furthermore, the first segment and the second segment are linked by an articulated link (25) inside which is arranged a coaxial cable (26) running from the first segment (241) to the second segment (242), said coaxial cable comprising an electrically conducting outer envelope (29) insulated electrically from an electrically conducting central core (27), the tool (20) comprising means of electrical contact between the central core (27) of the coaxial cable and the first electrode (21), and means of electrical contact between the outer envelope (29) of said coaxial cable and the second electrode (22).
A commutation spark gap includes at least one first electrode and one second electrode, both electrically conducting, each including an arc zone placed opposite the arc zone of the other electrode, the electrodes being adapted to be linked to the terminals of a source of potential. The spark gap exhibits a general tubular shape, the first electrode forming a cylindrical body of the spark gap, open at its two ends, and the second electrode, termed the central electrode, cylindrical and co-axial with the first, extending along the axis of the spark gap at least from one end to the other of the cylindrical body.
The invention concerns a probe for generating seismic waves, comprising at least: - a tubular body (10) having a first end linked to an electrical power cable, - a capacitor bank, arranged inside the body (10), - a spark gap, installed at a second end of the body and linked to the capacitor bank, suitable for generating a seismic wave when the energy accumulated by the capacitor bank is released, characterised in that: the capacitor bank is formed from cylindrical capacitors (621) comprising bases each having a different polarity, the capacitors (621) are mounted coaxial to each other parallel to the main axis of the body, and the capacitors (621) are electrically linked into at least two groups of capacitors connected in parallel, each group of capacitors having a positive pole and a negative pole, said groups being arranged in the body (10) such that the facing poles of two adjacent groups are of the same polarity.
The invention concerns a probe for generating seismic waves, comprising at least: - a tubular body (10) having a first end linked to an electrical power cable, - a capacitor bank, arranged inside the body (10), - a spark gap, installed at a second end of the body and linked to the capacitor bank, suitable for generating a seismic wave when the energy accumulated by the capacitor bank is released, characterised in that: the capacitor bank is formed from cylindrical capacitors (621) comprising bases each having a different polarity, the capacitors (621) are mounted coaxial to each other parallel to the main axis of the body, and the capacitors (621) are electrically linked into at least two groups of capacitors connected in parallel, each group of capacitors having a positive pole and a negative pole, said groups being arranged in the body (10) such that the facing poles of two adjacent groups are of the same polarity.
An electrical device for well stimulation comprising a plurality of sections configured to be assembled, end to end, to form a tool. The tool comprises first and second electrodes. The second electrode is an electrically insulated peripheral electrode of the first electrode. The first and second electrodes of the tool forming, at one of the ends of the tool, a stimulation head. Additionally, one end of a body of a first section comprises a peripheral ring that is rotatably movable and translatably immobile relative to the body of the first section. The peripheral ring comprises a thread configured to engage with a thread of the second electrode of one end of a second section.
The invention relates to a device (20) for stimulation of wells, comprising a tool (200) comprising a capacitive element (205) and a stimulation head (210), said device being characterized in that it comprises switching means capable of placing the tool (200) in at least two states: i) a charging state in which the capacitive element and the stimulation head are electrically in series between the first and second terminal of the tool, in such a way that the electrical source charges the capacitive element through the stimulation head (210), and ii) a discharging state in which the capacitive element discharges through the stimulation head (210). The invention also relates to a diagnostic method for such a device (20) for stimulation of wells.
The present invention relates to a tool (200) for stimulation of wells, comprising an electrical supply port, a stimulation head (210) and at least two capacitive elements (205a-205c) between said supply port and said stimulation head, each capacitive element comprising two terminals (Bp, Bn) with respectively different polarities arranged on the respectively opposed connection faces of said capacitive element, the poles of said capacitive elements (205a-205c) having the same polarity being connected together in such a way that said capacitive elements are electrically in parallel. Advantageously, the capacitive elements (205a-205c) of the tool (200) are arranged in series with their connection faces facing each other, and in such a way that the facing connection faces of each adjacent pair of capacitive elements correspond to terminals of the same polarity.
The invention relates to a device (20) for stimulation of wells, comprising a tool (200) comprising a capacitive element (205) and a stimulation head (210), said device being characterized in that it comprises switching means capable of placing the tool (200) in at least two states: i) a charging state in which the capacitive element and the stimulation head are electrically in series between the first and second terminal of the tool, in such a way that the electrical source charges the capacitive element through the stimulation head (210), and ii) a discharging state in which the capacitive element discharges through the stimulation head (210). The invention also relates to a diagnostic method for such a device (20) for stimulation of wells.
The present invention relates to a tool (200) for stimulation of wells, comprising an electrical supply port, a stimulation head (210) and at least two capacitive elements (205a-205c) between said supply port and said stimulation head, each capacitive element comprising two terminals (Bp, Bn) with respectively different polarities arranged on the respectively opposed connection faces of said capacitive element, the poles of said capacitive elements (205a-205c) having the same polarity being connected together in such a way that said capacitive elements are electrically in parallel. Advantageously, the capacitive elements (205a-205c) of the tool (200) are arranged in series with their connection faces facing each other, and in such a way that the facing connection faces of each adjacent pair of capacitive elements correspond to terminals of the same polarity.
The invention relates to a spark-gap comprising: - a first body supporting a first electrode mounting (12) connected to a first electrode (2) having a first electrode end (4); - a second body supporting a second electrode mounting (14) connected to a second electrode (6) placed so as to face the first electrode end (4); and - a connection arm (10) connecting the first body to the second body. The first body and the second body have a generally cylindrical outer shape and are aligned along a common longitudinal axis (22). The first electrode end (4) is offset, relative to the longitudinal axis (22), toward the side opposite the connection arm (10). The invention also relates to an electric arc generation device comprising such a spark-gap.
The invention relates to a spark-gap of an electric arc generation device for creating a seismic wave, wherein said spark-gap comprises: - a first electrode (2) connected to a first electrode mounting (4); - a second electrode (6) connected to a second electrode mounting (8) and having a concave surface (14) opposite the first electrode (2) and a diameter substantially greater than the diameter of the first electrode (2); and - at least one connection arm (10) connecting the first electrode mounting (4) to the second electrode mounting (8). The invention also relates to an electric arc generation device comprising such a spark-gap.
The invention relates to a spark-gap comprising: - a first body supporting a first electrode mounting (12) connected to a first electrode (2) having a first electrode end (4); - a second body supporting a second electrode mounting (14) connected to a second electrode (6) placed so as to face the first electrode end (4); and - a connection arm (10) connecting the first body to the second body. The first body and the second body have a generally cylindrical outer shape and are aligned along a common longitudinal axis (22). The first electrode end (4) is offset, relative to the longitudinal axis (22), toward the side opposite the connection arm (10). The invention also relates to an electric arc generation device comprising such a spark-gap.
The invention relates to a spark-gap of an electric arc generation device for creating a seismic wave, wherein said spark-gap comprises: - a first electrode (2) connected to a first electrode mounting (4); - a second electrode (6) connected to a second electrode mounting (8) and having a concave surface (14) opposite the first electrode (2) and a diameter substantially greater than the diameter of the first electrode (2); and - at least one connection arm (10) connecting the first electrode mounting (4) to the second electrode mounting (8). The invention also relates to an electric arc generation device comprising such a spark-gap.
The invention relates to a commutation spark gap (1) comprising at least one first electrode and one second electrode, both electrically conducting, each comprising an arc zone placed opposite the arc zone of the other electrode, the electrodes being adapted to be linked to the terminals of a source of potential, characterized in that the spark gap (1) exhibits a general tubular shape, said first electrode (2) forming a cylindrical body (3) of the spark gap, open at its two ends, and said second electrode, termed the central electrode (4), cylindrical and co-axial with the first, extending along the axis of the spark gap at least from one end to the other of the cylindrical body (3).
The present invention relates to an electrical device (10) for well stimulation, said device comprising a plurality of sections (11), said sections being suitable for being assembled, end to end, such as to form a tool (10a) comprising a first and second electrode, said second electrode being an electrically insulated peripheral electrode of said first electrode, said first and second electrodes of the tool forming, at one of the ends of the tool, a stimulation head (15). Additionally, one end of a body of a first section (11a) comprises a peripheral ring (16) that is rotatably movable and translatably immobile relative to said body of said first section, said peripheral ring (16) comprising a thread suitable for engaging with a thread (133) of the second electrode of one end of a second section (11b).
The invention relates to a commutation spark gap (1) comprising at least one first electrode and one second electrode, both electrically conducting, each comprising an arc zone placed opposite the arc zone of the other electrode, the electrodes being adapted to be linked to the terminals of a source of potential, characterized in that the spark gap (1) exhibits a general tubular shape, said first electrode (2) forming a cylindrical body (3) of the spark gap, open at its two ends, and said second electrode, termed the central electrode (4), cylindrical and co-axial with the first, extending along the axis of the spark gap at least from one end to the other of the cylindrical body (3).
The present invention relates to an electrical device (10) for well stimulation, said device comprising a plurality of sections (11), said sections being suitable for being assembled, end to end, such as to form a tool (10a) comprising a first and second electrode, said second electrode being an electrically insulated peripheral electrode of said first electrode, said first and second electrodes of the tool forming, at one of the ends of the tool, a stimulation head (15). Additionally, one end of a body of a first section (11a) comprises a peripheral ring (16) that is rotatably movable and translatably immobile relative to said body of said first section, said peripheral ring (16) comprising a thread suitable for engaging with a thread (133) of the second electrode of one end of a second section (11b).
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