CN219262348U

CN219262348U - Underground fracturing monitor with guide function

Info

Publication number: CN219262348U
Application number: CN202320034577.9U
Authority: CN
Inventors: 周海民; 徐晋; 成晓雨
Original assignee: Xinhuaxia International Energy Development Co ltd
Current assignee: Xinhuaxia International Energy Development Co ltd
Priority date: 2023-01-06
Filing date: 2023-01-06
Publication date: 2023-06-27
Anticipated expiration: 2033-01-06

Abstract

The utility model discloses a well fracturing monitor with a guide function, and relates to the technical field of monitors. The device comprises a fracturing string, wherein a fixed plate is fixedly arranged on the outer side of the fracturing string, and a monitoring mechanism is arranged on the outer side of the fixed plate so as to monitor the pressure of the fracturing string; the inside of the fracturing string is provided with a driving mechanism for driving the monitoring mechanism. The arc-shaped top pressure shell can act on the surface of the borehole wall in the well to realize detection of the pressure detection head, so that collision between the arc-shaped top pressure shell and the borehole wall in the well is avoided, and meanwhile, the first buffer piece can buffer the arc-shaped top pressure shell, so that the pressure detection head can be protected, and further, the pressure detection head is prevented from being damaged.

Description

Underground fracturing monitor with guide function

Technical Field

The utility model belongs to the technical field of monitors, and particularly relates to a downhole fracturing monitor with a guide function.

Background

In the fracturing process of a vertical well, a highly-deviated well and a horizontal well, bottom hole pressure and bottom hole temperature data are the simplest and most economical effective means for analyzing the extension condition of an artificial crack and evaluating the fracturing effect, the existing pressure detection mode is generally that a detection head of a pressure gauge is arranged on the side wall of a fracturing string, so that the pressure gauge enters the well along with the fracturing string, and the oil outlet pressure on the inner side wall of the well is detected;

in this regard, chinese patent application No. cn20222128777. X discloses a guided downhole fracturing monitor comprising: fracturing a tubular column; the moving block is slidably arranged on the side wall of the fracturing string, and the sliding direction of the moving block is perpendicular to the axis of the fracturing string; the abutting plate comprises a contact surface and a pressing surface, the abutting plate is rotatably arranged on the moving block, and the rotating point of the abutting plate is positioned at the middle part of the pressing surface of the abutting plate; the pressure detection head is provided with a penetrating groove on the abutting plate, and is arranged in the penetrating groove, and the detection end face of the pressure detection head is parallel to the contact surface;

the patent makes the abutting plate contact with the well wall by abutting the contact surface of the abutting plate when the moving block is driven to move towards the well wall through the mutual matching between the moving block and the abutting plate; the foremost body of this kind of patent is the cylinder, and its cross section is circular, and the resistance is great, if borehole wall surface roughness in the well, can bump with borehole wall roughness department emergence when monitoring instrument advances in the drilling, and it is very obvious to the scraping effect of borehole wall, this use that influences monitoring instrument easily, makes the fracturing pipe can not continue the subsequent process.

Disclosure of Invention

The utility model aims to provide a downhole fracturing monitor with a guide function, which solves the problem that the existing monitoring tool is easy to collide with uneven parts of a drilling hole wall when being pushed in the drilling hole by arranging an arc-shaped jacking shell.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

the utility model relates to a downhole fracturing monitor with a guide, which comprises a fracturing string, wherein a fixed plate is fixedly arranged on the outer side of the fracturing string, and a monitoring mechanism is arranged on the outer side of the fixed plate so as to monitor the pressure of the fracturing string; and a driving mechanism is arranged on the inner side of the fracturing string so as to drive the monitoring mechanism.

Further, the monitoring mechanism comprises an installation box, a movable seat, a first spring, a sliding block and a pressure detection head; the installation box fixed mounting is in the outside of fixed plate, movable seat slidable mounting is in the inboard of installation box, and with actuating mechanism's output fixed connection, the one end fixed mounting of first spring is in the inboard of movable seat, slider slidable mounting is in the movable seat inboard, and with the other end of first spring, pressure detection head fixed mounting is in the outside of slider.

Further, the monitoring mechanism further comprises a connecting seat, a first buffer piece, an arc-shaped jacking shell, two second buffer pieces and two sliding rails; the connecting seat is fixedly arranged at the output end of the pressure detection head, the first buffer piece is fixedly arranged at the outer side of the connecting seat, the arc-shaped jacking shell is fixedly arranged at the output end of the first buffer piece, the two sliding rails are respectively fixedly arranged at the upper end and the lower end of the installation box, the two ends of the arc-shaped jacking shell are respectively in sliding connection with the two sliding rails, and the two second buffer pieces are respectively arranged at the two ends of the connecting seat.

Further, the first buffer comprises a sleeve, a loop bar and a second spring; the sleeve is fixedly arranged at the end part of the connecting seat, one end of the loop bar is inserted into the sleeve and is in sliding connection with the sleeve, the other end of the loop bar is fixedly connected with the arc-shaped jacking shell, and the second spring is sleeved on the loop bar.

Further, the second buffer piece further comprises a second sleeve, a second loop bar, a guide block and a third spring; one end of the second sleeve is hinged with the connecting seat, one end of the second sleeve rod is inserted into the inner side of the second sleeve and is in sliding connection with the second sleeve, the other end of the second sleeve rod is hinged with the top wall of the mounting box, the guide block is slidably mounted in the inner side of the second sleeve and is fixedly connected with the second sleeve rod, and the third spring is fixedly mounted in the inner side of the second sleeve.

Further, the driving mechanism comprises a motor, an internal thread cylinder and a threaded rod; the motor fixed mounting is in the inboard of fracturing tubular column, the one end of internal thread section of thick bamboo and the output shaft fixed connection of motor, the threaded rod runs through the inner wall of fracturing tubular column, and with fracturing tubular column sliding connection, the one end and the internal thread section of thick bamboo threaded connection of threaded rod, the other end and the movable seat fixed connection of threaded rod.

The utility model has the following beneficial effects:

1. according to the utility model, the movable seat is enabled to be along one end of the installation box through the driving mechanism, the sliding block drives the pressure detection head to drive the connecting seat to linearly move, the first buffer piece drives the arc-shaped pressing shell to act on the surface of the borehole wall in the well, collision between the arc-shaped pressing shell and the borehole wall in the well is avoided, meanwhile, the first buffer piece can buffer the arc-shaped pressing shell, and the pressure detection head can be protected, so that the pressure detection head is prevented from being damaged.

2. According to the utility model, the guide block can act on the third spring through the relative movement between the second sleeve and the second sleeve rod, so that the third spring is compressed to generate elastic force, and further, the connecting seat can stably perform linear movement, and the pressure detection head can accurately detect the pressure of the drilling hole wall.

Of course, it is not necessary for any one product to practice the utility model to achieve all of the advantages set forth above at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a guided downhole fracturing monitor;

FIG. 2 is a schematic structural view of a monitoring mechanism of a guided downhole fracturing monitor;

FIG. 3 is a schematic illustration of a first buffer member with a guided downhole fracture monitor;

FIG. 4 is a schematic diagram of a second buffer with a guided downhole fracture monitor;

FIG. 5 is a schematic diagram of a drive mechanism for a guided downhole fracturing monitor;

in the drawings, the list of components represented by the various numbers is as follows:

the fracturing string 1, the fixed plate 2, the monitoring mechanism 3, the mounting box 31, the movable seat 32, the first spring 33, the sliding block 34, the pressure detection head 35, the connecting seat 36, the first buffer 37, the sleeve 371, the sleeve rod 372, the second spring 373, the arc-shaped pressing shell 38, the second buffer 39, the second sleeve 391, the second sleeve rod 392, the guide block 393, the third spring 394, the sliding rail 30, the driving mechanism 4, the motor 41, the internal thread cylinder 42 and the threaded rod 43.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, the utility model relates to a downhole fracturing monitor with guide, which comprises a fracturing string 1, wherein a fixed plate 2 is fixedly arranged on the outer side of the fracturing string 1, and a monitoring mechanism 3 is arranged on the outer side of the fixed plate 2 so as to monitor the pressure of the fracturing string 1; a driving mechanism 4 is installed inside the fracturing string 1 to drive the monitoring mechanism 3.

The monitoring mechanism 3 comprises an installation box 31, a movable seat 32, a first spring 33, a sliding block 34, a pressure detection head 35, a connecting seat 36, a first buffer piece 37, an arc-shaped top pressure shell 38, two second buffer pieces 39 and two sliding rails 30; the mounting box 31 is fixedly mounted on the outer side of the fixed plate 2, the movable seat 32 is slidably mounted on the inner side of the mounting box 31 and fixedly connected with the output end of the driving mechanism 4, one end of the first spring 33 is fixedly mounted on the inner side of the movable seat 32, the sliding block 34 is slidably mounted on the inner side of the movable seat 32 and fixedly mounted on the other end of the first spring 33, and the pressure detection head 35 is fixedly mounted on the outer side of the sliding block 34; the output of connecting seat 36 fixed mounting at pressure detection head 35, first bolster 37 fixed mounting are in the outside of connecting seat 36, and arc roof pressure shell 38 fixed mounting is in the output of first bolster 37, and two slide rails 30 are fixed mounting respectively at the upper and lower both ends of install bin 31, and the both ends of arc roof pressure shell 38 respectively with two slide rails 30 sliding connection, two second bolster 39 are installed respectively at the both ends of connecting seat 36.

During detection, the movable seat 32 is arranged along one end of the mounting box 31 through the driving mechanism 4, the sliding block 34 drives the pressure detection head 35 to drive the connecting seat 36 to linearly move, the first buffer piece 37 drives the arc-shaped top pressure shell 38 to act on the surface of the borehole wall in the well, collision between the arc-shaped top pressure shell 38 and the borehole wall in the well is avoided, meanwhile, the first buffer piece 37 can buffer the arc-shaped top pressure shell 38, the pressure detection head 35 can be protected, and the pressure detection head 35 is prevented from being damaged.

Wherein as shown in fig. 4, the first buffer 37 includes a sleeve 371, a stem 372, and a second spring 373; the sleeve 371 is fixedly mounted at the end of the connecting seat 36, one end of the sleeve rod 372 is inserted into the sleeve 371 and is in sliding connection with the sleeve 371, the other end of the sleeve rod 372 is fixedly connected with the arc-shaped pressing shell 38, and the second spring 373 is sleeved on the sleeve rod 372. When the arc-shaped top pressure shell 38 collides with the borehole wall in the well, the sleeve rod 372 and the sleeve 371 slide relatively, so that the second spring 373 is extruded to generate elasticity, and the connecting seat 36 can be buffered, and the damage caused by overlarge stress of the pressure detection head 35 in the extrusion process is effectively avoided.

Wherein the second cushioning member 39 further comprises a second sleeve 391, a second sleeve rod 392, a guide block 393, and a third spring 394, as shown in fig. 4; one end of the second sleeve 391 is hinged with the connecting seat 36, one end of the second sleeve 392 is inserted in the inner side of the second sleeve 391 and is in sliding connection with the second sleeve 391, the other end of the second sleeve 392 is hinged with the top wall of the mounting box 31, the guide block 393 is slidably mounted in the inner side of the second sleeve 391 and is fixedly connected with the second sleeve 392, and the third spring 394 is fixedly mounted in the inner side of the second sleeve 391. In the moving process of the connecting seat 36, the relative movement between the second sleeve 391 and the second sleeve rod 392 can make the guide block 393 act on the third spring 394, so that the third spring 394 is compressed to generate elastic force, further ensuring that the connecting seat 36 can stably perform linear movement, and the pressure detection head 35 can accurately detect the pressure of the borehole wall.

Wherein, as shown in fig. 5, the driving mechanism 4 comprises a motor 41, an internal thread cylinder 42 and a threaded rod 43; the motor 41 is fixedly arranged on the inner side of the fracturing string 1, one end of the internal thread cylinder 42 is fixedly connected with an output shaft of the motor 41, the threaded rod 43 penetrates through the inner wall of the fracturing string 1 and is in sliding connection with the fracturing string 1, one end of the threaded rod 43 is in threaded connection with the internal thread cylinder 42, and the other end of the threaded rod 43 is fixedly connected with the movable seat 32;

one specific application of this embodiment is: the motor 41 is started to rotate the internal thread cylinder 42, so that the threaded rod 43 and the internal thread cylinder 42 are relatively displaced, the second sleeve rod 392 drives the movable seat 32 to move along one end of the installation box 31, the sliding block 34 drives the pressure detection head 35 to drive the connecting seat 36 to move linearly, the first buffer piece 37 drives the arc-shaped jacking shell 38 to act on the surface of the borehole wall, and collision between the arc-shaped jacking shell 38 and the borehole wall in the borehole is avoided.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.

Claims

1. The utility model provides a take fracturing monitor in pit of direction, includes fracturing tubular column (1), its characterized in that: the outside of the fracturing string (1) is fixedly provided with a fixed plate (2), and the outside of the fixed plate (2) is provided with a monitoring mechanism (3) for monitoring the pressure of the fracturing string (1); the inside of the fracturing string (1) is provided with a driving mechanism (4) so as to drive the monitoring mechanism (3).

2. A guided downhole fracturing monitor according to claim 1, wherein the monitoring mechanism (3) comprises a mounting box (31), a movable seat (32), a first spring (33), a slider (34) and a pressure detection head (35); the mounting box (31) is fixedly mounted on the outer side of the fixed plate (2), the movable seat (32) is slidably mounted on the inner side of the mounting box (31) and fixedly connected with the output end of the driving mechanism (4), one end of the first spring (33) is fixedly mounted on the inner side of the movable seat (32), the sliding block (34) is slidably mounted on the inner side of the movable seat (32) and is fixedly mounted on the other end of the first spring (33), and the pressure detection head (35) is fixedly mounted on the outer side of the sliding block (34).

3. The guided downhole fracturing monitor according to claim 2, wherein the monitoring mechanism (3) further comprises a connecting seat (36), a first buffer (37), an arc-shaped top pressure shell (38), two second buffers (39) and two sliding rails (30); the connecting seat (36) is fixedly arranged at the output end of the pressure detection head (35), the first buffer piece (37) is fixedly arranged at the outer side of the connecting seat (36), the arc-shaped jacking shell (38) is fixedly arranged at the output end of the first buffer piece (37), the two sliding rails (30) are respectively fixedly arranged at the upper end and the lower end of the mounting box (31), the two ends of the arc-shaped jacking shell (38) are respectively in sliding connection with the two sliding rails (30), and the two second buffer pieces (39) are respectively arranged at the two ends of the connecting seat (36).

4. A guided downhole fracture monitor according to claim 3, wherein the first buffer (37) comprises a sleeve (371), a stem (372) and a second spring (373); the sleeve (371) is fixedly mounted at the end part of the connecting seat (36), one end of the sleeve rod (372) is inserted into the sleeve (371) and is in sliding connection with the sleeve (371), the other end of the sleeve rod (372) is fixedly connected with the arc-shaped top pressing shell (38), and the second spring (373) is sleeved on the sleeve rod (372).

5. The guided downhole fracturing monitor of claim 4, wherein the second buffer (39) further comprises a second sleeve (391), a second sleeve rod (392), a guide block (393), and a third spring (394); one end of the second sleeve (391) is hinged to the connecting seat (36), one end of the second sleeve rod (392) is inserted into the inner side of the second sleeve (391) and is in sliding connection with the second sleeve (391), the other end of the second sleeve rod (392) is hinged to the top wall of the mounting box (31), the guide block (393) is slidably mounted in the inner side of the second sleeve (391) and is fixedly connected with the second sleeve rod (392), and the third spring (394) is fixedly mounted in the inner side of the second sleeve (391).

6. A guided downhole fracturing monitor according to claim 5, wherein the drive mechanism (4) comprises a motor (41), an internal thread cylinder (42) and a threaded rod (43); the utility model discloses a fracturing string, including fracturing string (1), motor (41), threaded rod (43) and movable seat (32) are installed in the inboard of fracturing string (1), the one end of female thread section of thick bamboo (42) and the output shaft fixed connection of motor (41) are run through the inner wall of fracturing string (1), and with fracturing string (1) sliding connection, the one end and the female thread section of thick bamboo (42) threaded connection of threaded rod (43), the other end and the movable seat (32) fixed connection of threaded rod (43).