MONITORING SYSTEM FOR DEFORMATIONS OF GAS STORAGE

Abstract

The present invention describes a mechanical coupling microseismic monitoring system, which includes at least one microseismic sensor, push rods that are arranged at both ends of the microseismic sensor through a first connection mechanism to send the microseismic sensor into the monitoring hole, introduction mechanisms that are mounted on the push rods for introducing the microseismic sensor into the monitoring hole, and one microseismic monitoring computer that receives signals from the microseismic sensor; the microseismic sensor is a recoverable microseismic sensor; the first connection mechanism is a connection mechanism that can make the push rod swing relative to the microseismic sensor; the introduction mechanism is a three-roller introduction mechanism. The present invention meets the requirement of microseismic monitoring for different parts of deep monitoring hole using multiple microseismic sensors.

Claims

1. A mechanical coupling microseismic monitoring system, comprising at least one microseismic sensor, pushrods that are arranged at both ends of the microseismic sensor through a first connection mechanism to send the microseismic sensor into a monitoring hole, introduction mechanisms that are installed on the push rods for introducing the microseismic sensor into the monitoring hole, and a microseismic monitoring computer that receives signals from the microseismic sensor; the microseismic sensor comprises a microseismic probe, a holding component holding the microseismic probe, a supporting plate that is supported by a wall surface of the monitoring hole, and a second connection mechanism for connecting the holding component with the supporting plate; wherein the holding component is configured to contact and couple with a lower surface of the microseismic probe held by the holding component with the wall surface of the monitoring hole where the microseismic probe located, a supporting side panel of the supporting plate is an arc panel, the second connection mechanism comprises at least two spring sleeves arranged on the holding component longitudinally along the microseismic probe, spring guide rods that are arranged on a non-supporting side panel of the support plate and matched with the spring sleeves arranged on the holding component, telescopic springs that are located inside the spring sleeves and are sleeved around the spring guide rods and act on the bottoms of the spring sleeves, and bolts that pass vertically through walls of the spring sleeves and the spring guide rods, the microseismic sensor is placed on a monitoring hole and the bolts are pulled out, then the lower surface of the microseismic probe and the supporting side panel of the supporting plate are effectively coupled with an inner wall of the monitoring hole under an action of the telescopic springs to monitor a vibration of rocks; one end of the push rod connected with the microseismic sensor is processed with a connection structure, and the other end of the push rod is processed with an extension connection structure; the first connection mechanism is configured to make the push rod swing relative to the microseismic sensor; the introduction mechanism is a roller introduction mechanism.

2. The mechanical coupling microseismic monitoring system of claim 1, wherein the holding component is a probe sleeve comprising a cone head and a straight body, and the straight body is with an open structure; a shape and a structure of an inner cavity of the probe sleeve matches a shape and a structure of the microseismic probe, so that a lower surface of the microprobe probe in the probe sleeve and a tip of the microprobe probe are exposed.

3. The mechanical coupling microseismic monitoring system of claim 2, wherein the spring sleeves are fixedly arranged on both sides of the probe sleeve in a way that is perpendicular and symmetrical to an axis of the microseismic probe, and all the spring sleeves, the spring guide rods and the telescopic springs have the same structure, and 2-3 spring sleeves are set on each side of the probe sleeve.

4. The mechanical coupling microseismic monitoring system of claim 1, wherein a tail end of the probe sleeve is provided with an end cap connected with the sleeve body by a screw pair, and the microseismic probe is fixed in a sleeve cavity by the end cap.

5. The mechanical coupling microseismic monitoring system of claim 1, wherein the bolts are a pin rod passes vertically through all the spring sleeves walls and the spring guide rods, and one end of the pin rod located at the tail end of the microseismic probe is provided with a pull cord for pulling out the pin rod.

6. The mechanical coupling microseismic monitoring system of claim 5, wherein the spring guide rod is designed with an upper spring seat for the telescopic spring, the bolts pass through the spring guide rod by a bolt hole above the upper spring seat.

7. The mechanical coupling microseismic monitoring system of claim 5, wherein the spring sleeve is provided with a mounting slot to make the telescopic spring become installed in the spring sleeve; in a process of installing the microseismic sensor in a monitoring hole, the bolt is used as the upper mounting seat of the telescopic spring.

8. The mechanical coupling microseismic monitoring system of claim 1, wherein the first connection mechanism comprises a connecting frame, a threaded sleeve, and a connecting rod, a first end of the connecting frame is fixedly connected to one end of the microseismic sensor, and a second end of the connecting frame is hinged to the threaded sleeve by a hinge structure, wherein one end of the connecting rod is processed with an external thread that is matched with the threaded sleeve, and the other end of the connecting rod is a polyhedral column, one end of the push rod connected with the first connection mechanism is processed with polyhedral column hole socketed with polyhedral column of the connecting rod, and the other end of the push rod is processed with extension connection structure, the polyhedral column of the connecting rod is fixed in the polyhedral column hole of the push rod through fastening screws.

9. The mechanical coupling microseismic monitoring system of claim 8, wherein the connecting frame comprises a ring that matches with the microseismic sensor, a connector, and two connecting arms with folding structures; the two connecting arms are arranged symmetrically, one end of the two connecting arms is fixedly connected to the ring and the other end of the two connecting arms is connected with the connector; the connector is hinged to the threaded sleeve by the hinge structure so that the push rod swings relative to the microseismic sensor.

10. The mechanical coupling microseismic monitoring system of claim 8, wherein the introduction mechanism is a three-roller introduction mechanism, three rollers of the three-roller mechanism are set to move along the wall of the monitoring hole in two mutually perpendicular directions, wherein one of the three rollers is set opposite to the supporting plate in the microseismic sensor, and the other two rollers are set to be opposite to each other.

11. The mechanical coupling microseismic monitoring system of claims 2, wherein the first connection mechanism comprises a connecting frame, a threaded sleeve, and a connecting rod, a first end of the connecting frame is fixedly connected to one end of the microseismic sensor, and a second end of the connecting frame is hinged to the threaded sleeve by a hinge structure, wherein one end of the connecting rod is processed with an external thread that is matched with the threaded sleeve, and the other end of the connecting rod is a polyhedral column, one end of the push rod connected with the first connection mechanism is processed with polyhedral column hole socketed with polyhedral column of the connecting rod, and the other end of the push rod is processed with extension connection structure, the polyhedral column of the connecting rod is fixed in the polyhedral column hole of the push rod through fastening screws.

12. The mechanical coupling microseismic monitoring system of claims 3, wherein the first connection mechanism comprises a connecting frame, a threaded sleeve, and a connecting rod, a first end of the connecting frame is fixedly connected to one end of the microseismic sensor, and a second end of the connecting frame is hinged to the threaded sleeve by a hinge structure, wherein one end of the connecting rod is processed with an external thread that is matched with the threaded sleeve, and the other end of the connecting rod is a polyhedral column, one end of the push rod connected with the first connection mechanism is processed with polyhedral column hole socketed with polyhedral column of the connecting rod, and the other end of the push rod is processed with extension connection structure, the polyhedral column of the connecting rod is fixed in the polyhedral column hole of the push rod through fastening screws.

13. The mechanical coupling microseismic monitoring system of claims 4, wherein the first connection mechanism comprises a connecting frame, a threaded sleeve, and a connecting rod, a first end of the connecting frame is fixedly connected to one end of the microseismic sensor, and a second end of the connecting frame is hinged to the threaded sleeve by a hinge structure, wherein one end of the connecting rod is processed with an external thread that is matched with the threaded sleeve, and the other end of the connecting rod is a polyhedral column, one end of the push rod connected with the first connection mechanism is processed with polyhedral column hole socketed with polyhedral column of the connecting rod, and the other end of the push rod is processed with extension connection structure, the polyhedral column of the connecting rod is fixed in the polyhedral column hole of the push rod through fastening screws.

14. The mechanical coupling microseismic monitoring system of claims 5, wherein the first connection mechanism comprises a connecting frame, a threaded sleeve, and a connecting rod, a first end of the connecting frame is fixedly connected to one end of the microseismic sensor, and a second end of the connecting frame is hinged to the threaded sleeve by a hinge structure, wherein one end of the connecting rod is processed with an external thread that is matched with the threaded sleeve, and the other end of the connecting rod is a polyhedral column, one end of the push rod connected with the first connection mechanism is processed with polyhedral column hole socketed with polyhedral column of the connecting rod, and the other end of the push rod is processed with extension connection structure, the polyhedral column of the connecting rod is fixed in the polyhedral column hole of the push rod through fastening screws.

15. The mechanical coupling microseismic monitoring system of claims 6, wherein the first connection mechanism comprises a connecting frame, a threaded sleeve, and a connecting rod, a first end of the connecting frame is fixedly connected to one end of the microseismic sensor, and a second end of the connecting frame is hinged to the threaded sleeve by a hinge structure, wherein one end of the connecting rod is processed with an external thread that is matched with the threaded sleeve, and the other end of the connecting rod is a polyhedral column, one end of the push rod connected with the first connection mechanism is processed with polyhedral column hole socketed with polyhedral column of the connecting rod, and the other end of the push rod is processed with extension connection structure, the polyhedral column of the connecting rod is fixed in the polyhedral column hole of the push rod through fastening screws.

16. The mechanical coupling microseismic monitoring system of claims 7, wherein the first connection mechanism comprises a connecting frame, a threaded sleeve, and a connecting rod, a first end of the connecting frame is fixedly connected to one end of the microseismic sensor, and a second end of the connecting frame is hinged to the threaded sleeve by a hinge structure, wherein one end of the connecting rod is processed with an external thread that is matched with the threaded sleeve, and the other end of the connecting rod is a polyhedral column, one end of the push rod connected with the first connection mechanism is processed with polyhedral column hole socketed with polyhedral column of the connecting rod, and the other end of the push rod is processed with extension connection structure, the polyhedral column of the connecting rod is fixed in the polyhedral column hole of the push rod through fastening screws.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG. 1 is a schematic diagram of a front view of the microseismic detection system in the present invention.

[0023] FIG. 2 is a schematic diagram of the B-B direction (top view) in FIG. 1.

[0024] FIG. 3 is a schematic diagram of an enlarged view of part 1 (the microseismic sensor) in FIG. 1.

[0025] FIG. 4 is a schematic diagram of the A-A direction in FIG. 1.

[0026] FIG. 5 is a schematic diagram of part 1 (top view) in FIG. 2.

[0027] FIG. 6 is a schematic diagram of the assembly of the telescopic spring in the microseismic sensor.

[0028] FIGS. 7-1 and 7-2 are the schematic diagrams of the connection structure between the push rod and the microseismic sensor; wherein FIG. 7-1 is the schematic diagram of the front view of the connection structure; and FIG. 7-2 is the schematic diagram of the top view of the connection structure.

[0029] FIGS. 8-1, 8-2 and 8-3 are the schematic diagrams of the push rod; wherein FIG. 8-1 is the schematic diagram of the front view; FIG. 8-2 is the schematic diagram of the left view; and FIG. 8-3 is the schematic diagram of the top view.

[0030] FIGS. 9-1, 9-2 and 9-3 are the schematic diagrams of the connecting rod, wherein FIG. 9-1 is the schematic diagram of the front view; FIG. 9-2 is the schematic diagram of the left view; and the FIG. 9-3 is the schematic diagram of the top view.

[0031] FIGS. 10-1, 10-2, and 10-3 are the schematic diagrams of the introduction mechanism, wherein FIG. 10-1 is the schematic diagram of the C direction of the introduction mechanism in FIG. 1; FIG. 10-2 is the schematic diagram of the left view of the introduction mechanism in FIG. 10-1; FIG. 10-3 is the schematic diagram of the top view of the introduction mechanism in FIG. 10-1.

[0032] In the above drawings, 1 is microseismic sensor, 2 is push rod, 3 is introduction mechanism, and 4 is monitoring computer. Wherein, 1-1 is microseismic probe; 1-2 is end cap; 1-3 is supporting plate; 1-4 is telescopic spring; the 1-5 is spring guide rod; 1-6 is spring sleeve; 1-7 is probe sleeve; 1-8 is pin rod; 1-9 is pull cord; 1-10 is connecting frame; 1-11 is threaded sleeve; 2-1 is connecting rod; 2-2 is push rod body; 2-3 is fastening screw.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The embodiments of the present invention are illustrated with the accompanying drawings, and the mechanical coupling microseismic monitoring system described in the present invention is further described by the embodiments.

[0034] The mechanical coupling microseismic monitoring system of the present embodiment, as shown in FIG. 1 to FIG. 10-3, includes one microseismic sensor 1, push rods 2 that are arranged at both ends of the microseismic sensor through a first connection mechanism to send the microseismic sensor into the monitoring hole, introduction mechanisms 3 that are mounted on the push rods for introducing the microseismic sensor into the monitoring hole, microseismic monitoring computer 4 that receives signals from the microseismic sensor. The microseismic sensor is a recoverable microseismic sensor, which includes a microseismic probe 1-1, a probe sleeve 1-7 holding the microseismic probe, an end cap 1-2 that fixes the microseismic probe in the probe sleeve, a supporting plate 1-3 that is supported by the wall surface of the monitoring hole, and a second connection mechanism for connecting the probe sleeve with the supporting plate; the probe sleeve includes a cone head and a straight body with an open structure, and a shape and structure of an inner cavity of the probe sleeve matches a shape and structure of the microseismic probe, so that a lower surface of the microseismic probe in the probe sleeve and a tip of the microprobe probe are exposed, the lower surface of the microseismic probe in the probe sleeve contact and couple with the wall of monitoring hole; a supporting side panel of the supporting plate is an arc panel; the second connection mechanism includes spring sleeves 1-6 that are arranged at both sides of the probe sleeve in a way that is perpendicular and symmetrical to the axis of the microseismic probe and two on each side of the probe sleeve, spring guide rods 1-5 that are arranged on the non-supporting side panel of the support plate and matched with the spring sleeve arranged on the probe sleeve, telescopic springs 1-4 that are located inside the spring sleeves and sleeved around the spring guide rods and act on a bottom of the spring sleeve, and bolts that pass vertically through the spring sleeve walls and the spring guide rods. The bolts in all parts of the second connection mechanism are components to be an integral structures, that is, a pin rod 1-8 passes vertically through all the spring sleeves walls and the spring guide rods to be the bolts at each part, and one end of the pin rod as the bolts at each parts is provided with a pull cord 1-9 at the tail end of the microseismic probe for pulling out the pin rod. One end of the push rod 2 connected with the connection mechanism is processed with a first hexagonal column hole, the other end is processed with a second hexagonal column hole that is connected to the extension rod. The connection mechanism includes a connecting frame 1-10, a threaded sleeve 1-11 and a connecting rod 2-1, wherein the connecting frame includes a ring that is fixedly connected to the microseismic sensor, a connector and two connecting arms with folding structures, and the two connecting arms are arranged symmetrically, one end is fixedly connected to the ring and the other end is connected with the connector, and the connecting frame is hinged to the threaded sleeve by the connector. One end of the connecting rod is processed with an external thread matched with the threaded sleeve, and the other end is a hexagonal column socketed with the polyhedral column hole of the push rod, and the hexagonal column of the connecting rod is fixed in the hexagonal column hole of the push rod by fastening screws. The introduction mechanism 3 is a three-roller introduction mechanism. The three rollers of the three-roller mechanism are set to move along the wall of the monitoring hole in two mutually perpendicular directions, wherein one of the three rollers is set to be opposite to the supporting plate 1-3 in the microseismic sensor, and the other two rollers are set to be opposite to each other.

[0035] Application method: First, embed the microseismic probe 1-1 into the probe sleeve 1-7, and fix the microseismic probe in the probe sleeve cavity by the end cap 1-2. Second, insert the spring guide rods with telescopic springs correspondingly into the spring sleeves 1-6 on both sides of the probe sleeve, pass the pin rod 1-8 vertically through the wall of the spring sleeve and the pin hole above the spring seat on the spring guide rod, so that the microseismic probe is integrally connected with the supporting plate; Then, install the push rod 2 at both ends of the microseismic sensor by the connection mechanism, install the three-roller introduction mechanism 3 on the push rod, connect the signal output end of the microseismic sensor with the signal input end of the monitoring computer, send the microseismic sensor into the monitoring hole by the push rod and the introduction mechanism installed on the push rod. After the microseismic sensor is in place, pull out the bolts by the wire pull cord at the tail end of the pin rod, then the lower surface of the microseismic probe and the arc supporting side panel of the supporting plate are effectively coupled with the inner wall of the monitoring hole under the action of the telescopic spring to monitor the vibration of the rock.

[0036] It is necessary to point out that the above embodiment is used only for further illustration of the present invention, which cannot be understood as a limit to the protection scope of the present invention. Those skilled in the art can make some non-essential improvements and adjustments to the present invention according to the content of the invention to achieve the specific implementation, which still belongs to the protection scope of the present invention.