RU35126U1 - Telemetry System Power Supply - Google Patents

Description

TELEMETRIC POWER SUPPLY

The utility model relates to technological equipment for oil and gas drilling and is specifically designed to power the telemetry system.

A well-known power source for a telemetric system containing a hydraulic turbine driven by a mud flow, an oil-filled stator filled with an epoxy compound and a rotor of an alternating current generator with permanent magnets located on a turbine shaft (A. Molchanova, A. Siraev, “Borehole autonomous systems with magnetic recording, M., Nedra, 1979, p. 102 ... 103).

The disadvantage of this power source is its significant axial and diametrical dimensions due to the presence of several stages of the turbine with guide vanes. In the absence of pumping of the drilling fluid or with a significant decrease in its flow rate, the power source does not fulfill its functions.

Also known is the power source of the telemetry system according to the certificate of the Russian Federation for utility model No. 18211 (prototype). This power source contains chemical elements in a common housing, which is fixed with a gap inside the drill pipe string above the downhole equipment using a connector on the end and a cable lug.

The disadvantage is the low life of the chemical elements.

The objective of the invention was to increase the life of the power source of the downhole equipment in the absence of circulation of the drilling fluid or a small flow rate of circulation of the drilling fluid.

The solution to this problem was achieved due to the fact that the power source of the telemetry system containing chemical elements installed in the housing or

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In a common housing fixed with a gap inside the drill pipe string, the chemical elements are made with separately stored components, the main component is located in the closed cavity of the element, and this cavity is filled with the possibility of communication with an additional cavity containing a component that causes activation of the chemical item. A drilling fluid used in the gap between the power source and the drill pipe string was used as a component causing activation of a chemical element. The power source may be configured to be alternately activated. The communication of the closed cavity with the additional through the separating device. The separating device is made in the form of a valve with an actuator or in the form of a membrane with a piston or in the form of a squib with an electric detonator. A filter is installed in front of the valve. A mixer may be used in the design of the source. The mixer is made in the form of two plates with holes. The holes in the plates are made at an angle to the axis of the source. The power source of the telemetry system may further comprise a voltage control unit that performs the switching of the chemical elements.

Patent studies have shown that the proposed technical solution has novelty and industrial applicability, i.e., all the criteria of a utility model.

The technical implementation of the utility model is real, because the design of the power source uses commercially available parts and assemblies.

The essence of the utility model is illustrated in FIG. 1 .. .6, where:

Pa fig. 1 is a diagram of the power source of the downhole equipment as part of a drill pipe string.

Pa fig. 2 - the first modification of a chemical element,

Pa fig. 3 - the second modification of the chemical element,

Pa fig. 4 - the third modification of the chemical element.

Pa fig. 5 - the fourth modification of the chemical element,

Pa fig. 6 - fifth modification of the device.

The power source of the downhole equipment (Fig. 1) contains chemical elements 1 and 2 in the casing or in the common casing 3, fixed with a gap "A inside the drill pipe string 4. Chemical elements 1 and 2 are installed above the downhole equipment 5 and connected to it using cable lug 6 and connector 7. All chemical elements 1 and 2 contain (Fig. 2): the case of element 8, inside of which in the cavities "B and" C

separately-stored components 9 and 10 are placed, separated by a partition 11 or a membrane 12. It is most likely that one of the components is in the liquid phase and the other is in the solid phase, although it is possible to use compounding in any other combinations, for example, using pastes and suspensions. It is possible to use three or more components. In the partition 11, a hole "D" is made, closed by a valve 13 with a valve 14 valve actuator. One electrode 15 is led out through the insulating sleeve 16, and, for example, the case of element 8 can serve as the second electrode.

The second modification of the implementation of the invention (Fig. 3) contains instead of the partition 11 a membrane 12, on both sides of which are placed separately stored components 9 and 10.

A piston 17 with a seal 18 is mounted above the separately stored components 9. A hole “D” is closed in the housing 4, closed by a valve 13 with a valve actuator 14. The cavity “E above the hole d3 is connected to the gap“ A through the channel “G. A filter 19 can be installed in the channel “G”. Pressure Р1 Р2.

In the third modification (Fig. 4) there is no membrane 12 and piston 17 with a seal 18. The role of a separately stored component is played by the drilling fluid passing in the gap "A through the filter 19, installed in front of the valve 13.

The fourth modification of the device (Fig. 5) contains the same nodes as the source

power supply (Fig. 3) and, optionally, a mixer 20, in which a separately stored component 10 is placed. The mixer 20 is formed by two gratings 21 and 22 with holes 23 in them. The holes 23 are made at an angle to the axis of the chemical element (this angle is less than 90 °). In the common housing 3 (Fig. 1), a voltage control unit 24 and a control unit 25 are installed. The voltage control unit 24 and the control unit 25 are connected to chemical elements 1 and 2.

The fifth modification of the device (Fig. 6) contains a squib 26 with an electric detonator 27.

The device operates (Fig. 1 and 2) as follows. When a signal is supplied from the control unit 25, the valve actuator 14 of the chemical element 1 moves the valve 13 upward and the separately stored component 9 is mixed with the separately stored component 10. The second modification of the power source of the downhole equipment (Fig. 3) works

in the following way. The signal from the control unit 25 (Fig. 1) is supplied to the valve actuator 14, which moves the valve 13 up. From the gap “A, through the channel“ G, into the cavity “E, drilling fluid enters, which then enters the cavity“ F above the piston 17. The piston 17, moving downward, creates pressure in the separately stored component 9 (liquid), while the membrane 12 ruptures and separately stored components 9 and 10 are mixed. Between the electrodes there is a voltage.

The third modification of the power source (Fig. 4) works as follows. When applying a signal to the valve actuator 14, the valve 13 opens the hole "D and the drilling fluid, which performs the function of a liquid separately stored component 9, from the gap" A through the channel "G through the filter 19 enters the cavity" T and then into the gap "B for mixing with a separately stored component 10, for example, in the solid phase.

The fourth modification (Fig. 5) works similarly to the second (Fig. 3), and in addition, a separately stored component 9 passes through a plate 21 with holes 23 and is mixed with a separately stored component 10. A mixture of separately stored components 9 and 10 through the plate 22 is supplied to the electrode 20.

The fifth modification of the source works as follows. When voltage is applied to the electric detonator 27, the igniter 26 is triggered. An increased pressure is created in the sheet “F” and the piston 17 moves downward, breaking through the membrane 12.

In all modifications of the power source of the downhole equipment (Fig. 1 ... 5), when the voltage of the chemical element 1, which controls the voltage control unit 24, decreases, the control unit 25 automatically activates the next chemical element 2 and carries out a switching, i.e., it switches off the chemical element 1 from the downhole equipment 5 and connect the chemical element 2.

4

The third modification of the power source (Fig. 4) operates as follows. When a signal is supplied to the valve actuator 14, the valve 13 opens the hole "B and the drilling fluid, which performs the function of a liquid separately stored component 9, from the gap" A through the channel "D through the filter 19 enters the cavity" C and then into the gap "B for mixing with a separately stored component 10, for example, in the solid phase.

The fourth modification (Fig. 5) works similarly to the second (Fig. 3), and in addition, the separately stored component 9 passes through the plate 21 with holes 23 and is mixed with the separately stored component 10. The mixture of separately stored components 9 and 10 through the plate 22 is supplied to the electrode 20.

In all modifications of the power source of the downhole equipment (Fig. 1, .. 5), when the voltage of the chemical element 1, which controls the voltage control unit 24, decreases, the control unit 25 automatically activates the next chemical element 2 and performs a switching, i.e., disconnects the chemical element 1 from the downhole equipment 5 and connect the chemical element 2.

Application of the utility model allowed:

1. Increase the life of the power source and ensure uninterrupted power supply of electric power to the borehole device of the telemetry system.

2. To stabilize the supply voltage due to the alternate connection of chemical elements.

3. To obtain a significant economic effect by eliminating tripping operations for frequent replacement of the previously used power source of the borehole equipment of the telemetry system.

Authors: IJ 1 / Grigashkin G. A.

Varlamov S. E.

Claims (12)

1. The power source of the telemetry system, containing chemical elements installed in the housings or in a common housing, fixed with a gap inside the drill pipe string, characterized in that the chemical elements are made with separately stored components, the main component is in a closed cavity of the element, this cavity configured to communicate with an additional cavity containing a component that causes activation of the chemical element. 2. The power source according to claim 1, characterized in that as the component causing the activation of the chemical element, the drilling fluid used is in the gap between the power source and the drill pipe string. 3. The power source according to claim 1 or 2, characterized in that it is made with the possibility of alternate activation. 4. A power source according to any one of claims 1 to 3, characterized in that the communication of the closed cavity with an additional one is made through a separating device. 5. The power source according to claim 4, characterized in that the separating device is made in the form of a valve with an actuator. 6. The power source according to claim 4, characterized in that the separating device is made in the form of a membrane with a piston. 7. The power source according to claim 4, characterized in that the separating device is made in the form of a membrane and a squib with an electric detonator. 8. The power source according to claim 5, characterized in that a filter is installed in front of the valve. 9. A power source according to any one of claims 1 to 8, characterized in that each chemical element contains a mixer, ensuring uniformity of the mixture of separately stored components. 10. The power source according to claim 9, characterized in that the mixer is made in the form of two plates with holes. 11. The power supply according to claim 10, characterized in that the holes in the plates are made at an angle to the axis of the power source of the downhole equipment. 12. The power source according to any one of claims 1 to 11, characterized in that it further comprises a voltage control unit for switching the chemical elements.