CN206299372U - One kind is with brill orientation acoustic signals receive transducer packaging system - Google Patents

Abstract

The utility model belongs to well logging measurement apparatus field, and in particular to a kind of with brill orientation acoustic signals receive transducer packaging system.Device includes drill collar, receive transducer, advance signal process circuit and master control electronics storehouse；Receive transducer and advance signal process circuit are encapsulated on drill collar body by wrapper respectively, and receive transducer and signal processing circuit realize electrical connection by the sealing connector that is electrically connected, and signal processing circuit and master control electronics storehouse electrically connect；Seal be electrically connected connector, receive transducer and the equal high pressure sealing of advance signal process circuit；Device realizes the sealing of transducer mud and advance signal process circuit using a kind of new individual packages transducer and the high pressure sealing connector that is electrically connected, it is to avoid the high pressure sealing of dynamic sealing design and the special design of ceramic crystal piece is electrically connected connector；It is simultaneously on signal transacting that signal processing circuit is preposition, and be encapsulated on drill collar, shorten the line length that signal is received and processed, reduce noise jamming.

Description

A packaging device for azimuth acoustic wave signal receiving transducer while drilling

technical field

The utility model mainly belongs to the field of logging-while-drilling measuring devices, and in particular relates to a packaging device for azimuth acoustic wave signal receiving transducers while drilling.

Background technique

With the continuous expansion of oil and gas field drilling scale and the development of science and technology. In particular, the rapid development of logging-while-drilling technology urgently requires the current advanced science and technology to play an important role in oil and gas field exploitation. Azimuth acoustic logging while drilling technology is one of the methods of logging while drilling technology. The azimuth acoustic wave transducer while drilling is the most important component of the azimuth acoustic wave instrument while drilling. When the instrument is working, the transmitting transducer built in the instrument generates sound waves , and then received by the receiving transducer in the same instrument, and the properties of the specific medium are evaluated through the received acoustic information such as wave velocity and attenuation of various mode waves. Because there is a mud hole in the middle of the tool while drilling, the acoustic wave transducer is installed on the outer wall of the drill collar body, and it is difficult to be immersed in oil to seal it like the cable acoustic logging instrument, so the azimuth acoustic wave transducer while drilling is generally packaged separately . The two relatively mature azimuth acoustic wave receiving transducers while drilling are button-type receiving transducers and receiving transducers with ring-shaped packaging. The button-type receiving transducers are directly installed in the electronic warehouse of the receiving end of the acoustic wave instrument while drilling , At the same time, this kind of transducer has high downhole receiving sensitivity. The ring-shaped packaging receiving transducer packs multiple receiving transducers in an annular strip structure, and the receiving chips are connected in parallel to form a receiving transducer. This kind of receiving transducer is mainly used for monopole azimuth acoustic wave instruments while drilling .

At present, there are mainly two structural schemes for the packaging structure of the azimuth acoustic wave signal receiving transducer while drilling: button type receiving transducer packaging device and annular potting receiving transducer packaging device.

Button-type receiving transducer packaging device. The transducer of this structure has its ceramic structure crystal encapsulated in a button-type metal structure, relying on the hydraulic balance device in the button-type metal structure to achieve the balance between the external mud of the ceramic crystal and the internal hydraulic oil, the ceramic crystal is in the button In the type structure, dynamic sealing needs to be realized, that is, to balance the pressure of the external mud of the ceramic sheet crystal and the internal hydraulic oil. This kind of button-type receiving transducer is directly installed on the frame of the receiving electronic warehouse, and the sealing ring between the external mud and the electronic warehouse is realized by the sealing ring on the outside of the button-type structure. Short-distance connection to receive weak acoustic signals.

The annular potting receives the transducer packaging device. The transducer of this structure adopts a sheet ceramic crystal structure, the receiving chip is packaged in an annular belt, and the receiving chip is connected in parallel to form a receiving transducer. The ring-shaped belt structure leads out the receiving signal lines of the chip through the sealing structure, and realizes electrical connection between the two signal receiving lines and the internal electronic compartment through the specially designed sealed electrical connection plug-in. This kind of transducer using epoxy resin potting glue can be immersed in mud, and the external mud and internal electronic compartment are sealed through a specially designed sealed electrical connection plug-in, so as to realize the reception of weak acoustic signals.

Both existing devices have their own drawbacks:

The button-type receiving transducer packaging device increases the complexity of the transducer design due to the requirements for the hydraulic dynamic balance design of the ceramic crystal sheet, and at the same time, the structure is prone to failure during use; the button-type transducer ceramic crystal sheet passes through the external The surface is bonded with a layer of PEEK material exposed to the mud, which is prone to damage in the complex application environment downhole; since the transducer is installed on the internal electronic warehouse frame and realizes high-pressure sealing with the drill collar body, this structure increases internal pressure. The processing and assembly requirements of the electronic warehouse skeleton and the external drill collar body.

When the annular potting and receiving transducer packaging device is electrically connected to the internal electronic compartment, a specially designed sealed electrical connection plug-in is required to meet the high-pressure sealing of the plug-in and at the same time realize the docking with the electrical connection plug-in on the electronic compartment. The use environment with strong vibration and shock requires that the insert can be fixed on the drill collar body. On the one hand, this kind of packaging structure requires a specially designed sealing insert, on the other hand, it also increases the processing and assembly requirements of the internal electronic warehouse skeleton and the external drill collar body. In addition, compared with the button-type transducer packaging structure, this structure increases The length of the electrical connection line from the transducer to the electronic chamber affects the extraction of the signal.

Utility model content

In view of the above problems, the utility model provides an azimuth acoustic wave signal receiving transducer packaging device while drilling, the amplifier circuit and the analog-to-digital conversion circuit are pre-installed on the drill, the length of the signal receiving and processing line is shortened, and the Noise interference; separate the receiving transducer package and the electrical connection package to reduce the requirements for the shape of the electrical connection plug-in, and use ordinary high-voltage sealed electrical connection plug-ins to realize the sealing of the transducer mud and the pre-signal processing circuit, without specially designing high-voltage circuits Connect plugin.

The utility model is achieved through the following technical solutions:

A transducer package device for receiving azimuth acoustic wave signals while drilling, the device includes a drill collar body 2, a main control electronic warehouse 1 and a receiving and processing system for azimuth acoustic wave signals while drilling;

The system for receiving and processing the azimuth acoustic wave signal while drilling includes a receiving transducer 3, a sealed electrical connection plug-in, a pre-signal processing circuit 10 and a total signal processing circuit;

The total signal processing circuit is installed on the main control electronic warehouse 1;

The sealed electrical connection insert is packaged on the drill collar body 2;

The receiving transducer 3 and the pre-signal processing circuit 10 are respectively sealed on the drill collar body 2 through a packaging structure under high pressure, and the receiving transducer 3 and the signal processing circuit 10 are electrically connected through a sealed electrical connection plug-in. connected, the signal processing circuit 10 is electrically connected to the total signal processing circuit;

The pre-signal processing circuit 10 includes a signal amplification module and an analog-to-digital conversion module;

The device adopts a new independently packaged transducer and a high-voltage sealed electrical connection plug-in to realize the sealing of the transducer mud and the pre-signal processing circuit, avoiding the dynamic sealing design of the ceramic crystal chip and the specially designed high-voltage sealed electrical connection plug-in; At the same time, in the signal processing, the signal processing circuit is pre-mounted and packaged on the drill collar, which shortens the length of the signal receiving and processing line, reduces noise interference, and reduces the design and processing of the electrical connection plug-in of the main control electronic warehouse and the drill collar. and assembly requirements, improving system reliability.

Further, the pre-signal processing circuit 10 is packaged on the drill collar body 2 through a packaging structure, and the packaging structure of the pre-signal processing circuit 10 and the outside of the sealed electrical connection insert are respectively covered with at least one sealing ring to achieve high-pressure sealing.

Further, the pre-signal processing circuit 10 is connected to the electrical connection plug installed in the main control electronic box 1 through the signal line 2, so as to realize the electrical connection between the signal processing circuit 10 and the main control electronic box 1 .

Further, the receiving transducer 3 includes a sensor and a packaging structure outside the sensor. The packaging structure of the receiving transducer 3 is formed by potting epoxy resin potting glue. The packaging structure of the receiving transducer 3 seals the sensor under high pressure. The transducer 3 is fixed on the drill collar body 2 by a fixing device, and the signal receiving the transducer 3 is led out of the packaging structure through the signal line one.

Further, the packaging structure is a rectangular parallelepiped structure with one side being curved, and the surface of the fixing device 2 in contact with the packaging structure is a curved surface, and the curved surface means that the contact surface has a certain curvature.

Further, the receiving transducer 3 adopts a three-outlet method for signal transmission, and the three-outlet line includes positive pole, negative pole and ground.

Further, the electrical connection insert includes a multi-core connecting pin 11 and a multi-pin connecting socket 12, and the multi-pin connecting pin 11 and the multi-pin connecting socket 12 are inserted into each other.

Further, the packaging structure of the pre-signal processing circuit 10 is a sealing cover 9 , the pre-signal processing circuit 10 is placed in the sealing cover 9 , and the sealing cover 9 is fixed on the drill collar body 2 .

Further, the sealed electrical connector is a three-core sealing pin 8 and a three-core sealing rubber sleeve 5, the three-core sealing rubber sleeve 5 and the three-core sealing pin 8 are installed in pairs, and the receiving energy conversion The device 3 is connected with the three-core sealing rubber sleeve 5.

Further, the packaging structure of the pre-signal processing circuit 10 and the sealed electrical connection plug-in are respectively fixed on the drill collar body 2 through retaining rings to ensure that they will not fall off from the drill collar body in a strong vibration environment downhole.

Beneficial technical effects of the utility model:

(1) The packaging device of the utility model separates the receiver seal from the electrical connection seal, reduces the requirements for parts processing and assembly and the design requirements for the electrical connection plug-in, and uses ordinary high-voltage sealed electrical connection plug-ins to realize the transducer mud and electrical connection. The sealing of the pre-signal processing circuit does not require special design of high-voltage electrical connection plug-ins; at the same time, the reliability of underground work is guaranteed.

(2) The package device of the utility model adopts epoxy resin potting glue to package the transducer into a rectangular parallelepiped structure with an arc on one side, which avoids the dynamic sealing design of the ceramic crystal sheet.

(3) The utility model adopts a modular design in which the amplifier circuit and the analog-to-digital conversion circuit are front-end, shortening the line length of signal receiving and processing, and reducing noise interference.

(4) The signal processing circuit module of the utility model is connected with the internal electronic warehouse by flexible wires to avoid the centering design requirements of the electronic warehouse electrical connection plug-in and the drill collar body.

(5) The utility model can be applied to the acoustic wave receiving system of dipole and multipole azimuth acoustic wave instruments while drilling.

Description of drawings

Fig. 1. Schematic diagram of packaging device for receiving transducer for azimuth acoustic wave signal while drilling;

Figure 2. Schematic diagram of the receiving transducer;

Figure 3. Schematic diagram of the receiving transducer fixing device;

Fig. 4. Exploded view of the encapsulation device for receiving the azimuth acoustic wave signal while drilling;

In the figure: 1. Main control electronic compartment, 2. Drill collar body, 3. Receiving transducer, 4. Package cover, 5. Three-core sealing rubber sleeve, 6. The first retaining ring, 7-1. The first Sealing ring, 7-2. Second sealing ring, 8. Three-core sealing pin, 9. Sealing cover, 10. Pre-signal processing circuit, 11. Multi-core connecting pin, 12. Multi-core connecting socket, 13. The second retaining ring, 14. double ceramic sensor, 15. polyurethane potting colloid.

detailed description

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

On the contrary, the utility model covers any alternatives, modifications, equivalent methods and schemes made on the spirit and scope of the utility model defined by the claims. Further, in order to make the public have a better understanding of the utility model, some specific details are described in detail in the detailed description of the utility model below. Those skilled in the art can fully understand the present invention without the description of these detailed parts.

Example 1

As shown in Figure 1, a kind of azimuth acoustic wave signal receiving transducer packaging device while drilling, said device includes a drill collar body 2, a main control electronic warehouse 1 and azimuth acoustic wave signal receiving and processing system while drilling;

The system for receiving and processing the azimuth acoustic wave signal while drilling includes a receiving transducer 3, a pre-signal processing circuit 10 and a total signal processing circuit;

The total signal processing circuit is installed on the main control electronic warehouse 1;

The sealed electrical connection plug-in, the receiving transducer 3 and the pre-signal processing circuit 10 are respectively high-pressure sealed on the drill collar body 2, and the receiving transducer 3 and the signal processing circuit 10 are connected through the sealed circuit. Connecting the plug-in to realize electrical connection, the signal processing circuit 10 is electrically connected to the total signal processing circuit;

The pre-signal processing circuit 10 includes a signal amplification module and an analog-to-digital conversion module;

After the pre-signal processing circuit 10 collects the weak sound wave signal transmitted from the receiving transducer 3, the signal is converted into an effective signal through an amplification and an analog-to-digital conversion circuit. Then it is transmitted to the main control circuit of the main control electronic warehouse 1 through the signal line for subsequent data processing. This structure separates the sealing of the receiving transducer packaging device from the electrical connection, reduces the requirements for the processing and assembly of parts and the design requirements for the electrical connection plug-in, and at the same time ensures the reliability of underground work.

The receiving transducer 3 is connected to the sealed electrical connection plug-in through the signal line 1; there is a gap between the receiving transducer 3 and the sealed electrical connection plug-in, and the gap is used to store the signal line 1 that is too long.

The pre-signal processing circuit 10 is connected to the sealed electrical connection plug-in through the signal line three;

The signal processing circuit 10 is connected to the electrical connection plug-in 2 installed in the main control electronic warehouse 1 through the signal line 2, so as to realize the electrical connection between the signal processing circuit 10 and the main control electronic warehouse 1. The signal processing circuit module and the main control electronic warehouse are connected by flexible wires to avoid the centering design requirements of the main control electronic warehouse electrical connection plug-in and the drill collar body.

The receiving transducer 3 adopts three outgoing lines for signal transmission, and the three outgoing lines include positive pole, negative pole and ground.

The sealed electrical connection plug-in is a three-core sealing pin 8 and a three-core sealing rubber sleeve 5, and the three-core sealing rubber sleeve 5 and three-core sealing pin 8 are installed in pairs, and the receiving transducer 3 passes through the signal line 1 and the three-core sealing rubber. Set of 5 connections.

The electrical connection plug-in is a multi-core connection pin 11 and a multi-core connection socket 12, the multi-core connection pin 11 and the multi-core connection socket 12 are plugged together, and the multi-core connection socket 12 is installed in the main control electronic compartment 1; The two ends are respectively connected with the signal processing circuit 10 and the multi-core connecting pin 11 .

The sealed electrical connection plug-in, the packaging structure of the receiving transducer 3 and the packaging structure of the pre-signal processing circuit 10 are all sealed under high pressure;

The receiving transducer 3 is fixed on the drill collar body 2 by the packaging cover plate 4, as shown in Figure 2, the receiving transducer 3 adopts a cable acoustic wave dual crystal sensor, and the packaging structure is formed by potting with epoxy resin potting glue One side is an arc-shaped rectangular parallelepiped structure, and the receiving transducer 3 is potted in the encapsulation structure, so as to realize the isolation of the receiving transducer 3 from the mud and at the same time, the signal is led out of the encapsulation structure through the signal line. The package cover plate 4 fixes the receiving transducer 3 on the drill collar body 2, as shown in Figure 3, the contact surface of the package cover plate 4 and the receiving transducer 3 is an arc surface, and the arc surface means that the contact surface has a certain radians. The packaging structure with one arc surface is adopted to meet the structural requirements of the drill collar body, and the dynamic sealing design of the ceramic crystal sheet is avoided. The package cover plate 4 of the receiving transducer also adopts an arc-shaped structure to enhance the sound transmission effect, so as to ensure that the thickness of the part in contact with the arc surface of the transducer is uniform.

The packaging structure of the pre-signal processing circuit 10 is a sealing cover 9 , the pre-signal processing circuit 10 is placed in the sealing cover 9 , and the sealing cover 9 is fixed on the drill collar body 2 .

The sealing cover 9 and the three-core sealing pin 8 are respectively covered with at least one sealing ring to realize high-pressure sealing and effectively isolate the mud from the signal processing circuit under high pressure.

The sealing cover 9 and the three-core sealing pin 8 are respectively fixed on the drill collar body 2 through retaining rings. Further, the retaining ring is elastic to ensure that the sealing cover 9 and the three-core sealing pin 8 will not fall off from the drill collar body in a strong vibration environment downhole.

In practical application, as shown in FIG. 4 , the three signal wires of the receiving transducer 3 are connected to the three-core sealing rubber sleeve 5 respectively, and the three-core sealing pin 8 is welded to the connection end of the pre-signal processing circuit 10 for the signal wires. During installation, first fix the three-core sealing pin 8 to the drill collar body 2 through the first retaining ring 6, and pass the signal line at the end of the three-core sealing pin 8 through a small hole into the cabin where the pre-signal processing circuit 10 is located and Connect with the pre-signal processing circuit 10 by soldering; then insert the three-core sealing rubber sleeve 5 into the three-core sealing pin 8, and then fix the receiving transducer 3 with the transducer packaging cover 4. The gap between the receiving transducer 3 and the three-core sealing rubber sleeve 5 is used to store the overly long signal line; The connection pin 11 is connected with the multi-core connection socket 12, wherein the multi-core connection socket 12 has been installed in the main control electronic warehouse 1 as a signal interface, and then the pre-signal processing circuit 10 is installed in the drill collar body 2; finally, the front The circuit sealing cover 9 is fixed on the drill collar body 2 through the retaining ring 13, so as to complete the sealing, installation and electrical connection of the azimuth acoustic wave signal receiving transducer and the processing circuit while drilling.

Claims (10)

1. A transducer package device for receiving azimuth acoustic wave signals while drilling, characterized in that the device includes a drill collar body (2), a main control electronic cabin (1) and a receiving and processing system for azimuth acoustic wave signals while drilling; The system for receiving and processing azimuth acoustic wave signals while drilling includes a receiving transducer (3), a sealed electrical connection plug-in, a pre-signal processing circuit (10) and a total signal processing circuit; The total signal processing circuit is installed on the main control electronics compartment (1); The sealed electrical connection insert is packaged on the drill collar body (2); The receiving transducer (3) and the pre-signal processing circuit (10) are respectively sealed on the drill collar body (2) through a packaging structure under high pressure, and the receiving transducer (3) and the signal processing circuit (10) Electrical connection is realized through a sealed electrical connection plug-in, and the signal processing circuit (10) is electrically connected to the overall signal processing circuit; The pre-signal processing circuit (10) includes a signal amplification module and an analog-to-digital conversion module. 2. An azimuth acoustic wave signal receiving transducer packaging device as claimed in claim 1, characterized in that the pre-signal processing circuit (10) is packaged on the drill collar body (2) through a packaging structure, and the pre-signal The packaging structure of the processing circuit (10) and the outer part of the sealed electrical connection insert are each covered with at least one sealing ring. 3. An azimuth acoustic wave signal receiving transducer packaging device as claimed in claim 1, characterized in that, the pre-signal processing circuit (10) is installed in the main control electronics compartment (1) through the signal line 2 The electrical connection plug-in connection. 4. An azimuth acoustic wave signal receiving transducer packaging device as claimed in claim 1, characterized in that the receiving transducer (3) includes a sensor and a packaging structure outside the sensor, and the receiving transducer (3) The packaging structure is formed by potting with epoxy resin potting glue. The packaging structure of the receiving transducer (3) seals the sensor under high pressure. The receiving transducer (3) is fixed on the drill collar body (2) by a fixing device. The signal of the energy device (3) is led out of the packaging structure through the signal line one. 5. a kind of while-drilling azimuth acoustic wave signal receiving transducer package device as claimed in claim 4, it is characterized in that, described package structure is the rectangular parallelepiped structure that one side is arc surface, and described fixing device two is in contact with package structure The surface is an arc surface, and the arc surface means that the contact surface has radians. 6. An azimuth acoustic wave signal receiving transducer packaging device according to any one of claims 1-4, characterized in that, the receiving transducer (3) adopts a three-outlet method for signal transmission, and the three Outlets include positive, negative and ground. 7. A packaging device for azimuth acoustic wave signal receiving while drilling as claimed in claim 3, characterized in that, the electrical connection insert includes a multi-core connection pin (11) and a multi-core connection socket (12), and multiple The core connection pins (11) and the multi-core connection sockets (12) are inserted into each other. 8. An azimuth acoustic wave signal receiving transducer packaging device according to any one of claims 1-5, characterized in that the packaging structure of the pre-signal processing circuit (10) is a sealing cover (9), and the The pre-signal processing circuit (10) is placed in the sealing cover (9), and the sealing cover (9) is fixed on the drill collar body (2). 9. An azimuth acoustic wave signal receiving transducer packaging device according to any one of claims 1-5, characterized in that, the sealed electrical connection plug-in is a three-core sealing pin (8) and a three-core sealant sleeve (5), the three-core sealing rubber sleeve (5) and the three-core sealing pin (8) are installed in pairs, the receiving transducer (3) and the three-core sealing rubber sleeve (5) connect. 10. An azimuth acoustic wave signal receiving transducer packaging device according to any one of claims 1-5, characterized in that the packaging structure of the pre-signal processing circuit (10) and the sealed electrical connection plug-in are respectively passed The retaining ring is fixed on the drill collar body (2).