Well control safety pressure test device for drilling engineering

Abstract

The utility model belongs to the technical field of well control pressure testing, and particularly relates to a well control safety pressure testing device for drilling engineering, which comprises a protection box, a pressure testing detector is arranged in the protection box, a connecting cylinder is fixedly connected to the top of the protection box, a plurality of open grooves are formed in the surface of the connecting cylinder, and the open grooves are communicated with the pressure testing detector. An adjustable supporting assembly is installed on the connecting cylinder and comprises a plurality of supporting rods and connecting rings. The connecting ring is pushed by the electric push rod to ascend and descend, the adjusting rod and the supporting rod are driven to rotate when the connecting ring ascends and descends, so that the supporting rod is unfolded or folded, the pulley can abut against the well wall to move, and when the size of the well wall changes, the pressure applied to the pressure sensor by the mounting frame changes and controls the electric push rod to operate again. Therefore, the position of the pulley can be flexibly adjusted according to the change of the diameter in the well, and the pulley can always abut against the well wall.

Description

Technical Field

[0001] The utility model relates to the technical field of well control pressure testing, in particular to a well control safety pressure testing device for drilling engineering. Background Technique

[0002] Drilling is a systematic project, a joint operation carried out by multiple specialties and types of work using a variety of equipment, tools, and materials. At the same time, it is a continuous operation with multiple procedures closely connected and multiple links interlocked. The whole process of construction is quite complex. Pressure testing is an important task in drilling well control. At present, the existing pressure testing equipment has poor stability when entering the well, and the equipment is prone to damage, resulting in economic losses.

[0003] The existing Chinese patent with the publication number CN219344669U discloses a well control safety pressure testing device for drilling engineering, including a safety pressure testing mechanism. The safety pressure testing mechanism includes: a bracket with a box body arranged at the top; a wire reel arranged inside the box body, and a motor is arranged at the top of the box body; a base arranged at the bottom of the wire reel and connected to the cable on the wire reel; a protective box arranged inside the base, and a pressure testing detector is arranged inside the protective box.

[0004] Regarding the above and related existing technologies, the inventor believes that there are often the following defects: The device adjusts the inclination angle of the rod body through a telescopic rod to adapt to the diameter of the well. However, when used in areas where the diameter of the well changes, it cannot be adjusted well again and needs to be improved. Therefore, a well control safety pressure testing device for drilling engineering is proposed for the above problems. Content of the Utility Model

[0005] In order to make up for the deficiencies of the existing technology and solve the above-mentioned technical problems, the utility model proposes a well control safety pressure testing device for drilling engineering.

[0006] The technical solution adopted by the present utility model to solve its technical problems is as follows: A well control safety pressure testing device for drilling engineering according to the present utility model includes a protective box. Inside the protective box, a pressure testing detector is provided. A connecting cylinder is fixedly connected to the top of the protective box. A number of slots are provided on the surface of the connecting cylinder. An adjustable support assembly is installed on the connecting cylinder. The adjustable support assembly includes a number of support rods and a connecting ring. The support rods are distributed in a ring shape and are rotatably connected to the connecting cylinder through shafts. One end of the support rod away from the connecting cylinder is fixedly connected with an installation cavity. Inside the installation cavity, a U-shaped installation frame is slidably connected. Inside the installation frame, a pulley is rotatably connected through a shaft. A number of limiting springs are fixedly connected to the side wall of the installation frame. The installation frame is separated from the pressure sensor by the limiting springs, and the other end of the limiting spring is fixedly installed inside the installation cavity. A pressure sensor is fixedly connected to the inner wall of the installation cavity. During use, the connecting cylinder is connected to a winding device. The protective box is gradually lowered into the position in the well that needs to be pressure tested by the winding device through wire pay-out. Then, the pressure testing detector is exposed to conduct pressure testing on the inside of the well. The detected values are sent to remote devices and computers through a signal transmitter.

[0007] Preferably, the connecting ring passes through the slot and is sleeved on the connecting cylinder. A number of adjusting rods are hinged to the side wall of the connecting ring, and one end of the adjusting rod away from the connecting ring is hinged to the support rod.

[0008] Preferably, the adjustable support assembly further includes an electric push rod. The electric push rod is fixedly installed on the top of the protective box, and the driving end of the electric push rod is fixedly connected to the connecting ring.

[0009] Preferably, a cleaning assembly is installed on the installation frame. The cleaning assembly includes two first scrapers. The two first scrapers are respectively rotatably installed on the upper and lower surfaces of the installation frame through torsion spring shafts. One end of the first scraper abuts against the pulley. When the pulley moves up and down in the well, oil sludge and other dirt will adhere to its surface. The first scraper abuts against the pulley through the torsion force of the torsion spring, and scrapes the dirt on its surface when the pulley rotates, preventing it from affecting the normal sliding of the pulley on the well wall.

[0010] Preferably, the cleaning assembly further includes a driver. The driver is fixedly installed on one side of the installation frame, and the driving end of the driver is fixedly connected to the shaft of the pulley. The rotation state of the pulley can be detected through a rotational speed sensor. When the pulley is completely stuck and cannot rotate normally, the rotational speed sensor detects the disappearance of the rotational speed of the pulley, transmits a signal to control the operation of the driver and the electric telescopic rod. The driver drives the pulley to rotate, and at the same time the electric telescopic rod extends so that the second scraper abuts against the outer wall of the pulley, thereby cleaning the pulley when it is stuck.

[0011] Preferably, the cleaning component further includes a rotational speed sensor which is fixedly installed on the other side of the mounting bracket and connected to the shaft of the pulley. Specifically, a gear made of a magnetically conductive material (such as iron or steel) is installed on the shaft of the pulley. The gear should be processed into an involute tooth profile with a module greater than a certain value to ensure precise matching with the sensor. Align the Hall, magnetoresistive, or eddy current sensor radially with the gear, and keep the installation gap between 0.5 and 2 millimeters.

[0012] Preferably, the cleaning component further includes an electric telescopic rod which is fixedly installed at the center of the mounting bracket.

[0013] Preferably, a second scraper is fixedly connected to the driving end of the electric telescopic rod, and the second scraper is triangular or Y-shaped.

[0014] The beneficial effects of the present utility model are as follows:

[0015] 1. In the present utility model, the electric push rod is used to push the connecting ring to rise and fall. When the connecting ring rises and falls, it drives the adjusting rod and the supporting rod to rotate, thereby unfolding or folding up the supporting rod, so that the pulley can move against the well wall. When the size of the well wall changes, the pressure exerted by the mounting bracket on the pressure sensor will change and control the electric push rod to operate again, so that the position of the pulley can be flexibly adjusted according to the change of the inner diameter of the well, and the pulley can always abut against the well wall.

[0016] 2. When the pulley in the present utility model rises and falls in the well, sludge and other dirt will adhere to its surface. The first scraper abuts against the pulley through the torsion of the torsion spring, and scrapes the dirt on its surface when the pulley rotates, preventing it from affecting the normal sliding of the pulley on the well wall. By using the first scraper and the second scraper in cooperation, the dirt attached to the surface of the pulley can be effectively removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is a sectional view of the connecting cylinder of the present utility model;

[0020] Figure 3 is a schematic diagram of the structure of the adjustable support assembly of the present utility model;

[0021] Figure 4 of the present utility modelFigure 3 Schematic diagram of structure A;

[0022] Figure 5 This is a schematic diagram of the cleaning component structure of the present utility model.

[0023] In the figure: 1. Protection box; 2. Connection cylinder; 3. Adjustable support assembly; 31. Support rod; 32. Installation cavity; 33. Installation frame; 34. Pulley; 35. Limit spring; 36. Pressure sensor; 37. Connection ring; 38. Adjusting rod; 39. Electric push rod; 4. Cleaning component; 41. First scraper; 42. Driver; 43. Rotation speed sensor; 44. Electric telescopic rod; 45. Second scraper. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment 1

[0026] Please refer to Figures 1-4 As shown, a well control safety pressure testing device for drilling engineering includes a protection box 1. A pressure testing detector is arranged inside the protection box 1. A connection cylinder 2 is fixedly connected to the top of the protection box 1. A plurality of slots are formed on the surface of the connection cylinder 2. An adjustable support assembly 3 is installed on the connection cylinder 2. The adjustable support assembly 3 includes a plurality of support rods 31 and a connection ring 37. The support rods 31 are distributed in a ring shape and are rotationally connected to the connection cylinder 2 through shafts. One end of the support rod 31 away from the connection cylinder 2 is fixedly connected with an installation cavity 32. A U-shaped installation frame 33 is slidably connected inside the installation cavity 32. A pulley 34 is rotationally connected inside the installation frame 33 through a shaft. A plurality of limit springs 35 are fixedly connected to the side wall of the installation frame 33, and the other ends of the limit springs 35 are fixedly installed inside the installation cavity 32. A pressure sensor 36 is fixedly connected to the inner wall of the installation cavity 32. During use, the connection cylinder 2 is connected to a winding device, and the protection box 1 is gradually lowered into the position in the well that needs to be pressure tested by the winding device to unwind the wire. Then, the pressure testing detector is exposed to perform pressure testing on the inside of the well, and the detected values are sent to a remote device and a computer through a signal transmitter.

[0027] When the protective box 1 is lifted and lowered in the well, the electric push rod 39 is used to push the connecting ring 37 to lift and lower. When the connecting ring 37 lifts and lowers, it drives the adjusting rod 38 and the support rod 31 to rotate, so as to expand or retract the support rod 31, enabling the pulley 34 to abut against the well wall and move, thereby enhancing the stability of the protective box 1. When the support rod 31 is expanded, the pulley 34 abuts against the well wall and pushes the mounting bracket 33 to squeeze the pressure sensor 36. When the pressure sensor 36 detects a pressure signal, it transmits a signal to control the electric push rod 39 to stop operating, enabling the support rod 31 to be accurately expanded according to the diameter of the well wall. When the size of the well wall changes, the pressure exerted by the mounting bracket 33 on the pressure sensor 36 will change. When the pressure increases, the support rod 31 retracts; when the pressure decreases, the support rod 31 continues to extend until the pressure value reaches a predetermined threshold, and then the electric push rod 39 stops operating. Thus, the position of the pulley 34 can be flexibly adjusted according to the change in the diameter of the well, so that the pulley 34 can always abut against the well wall.

[0028] The connecting ring 37 passes through the slotted opening and is sleeved on the connecting cylinder 2. A plurality of adjusting rods 38 are hinged to the side wall of the connecting ring 37, and one end of the adjusting rod 38 away from the connecting ring 37 is hinged to the support rod 31.

[0029] The adjustable support assembly 3 further includes an electric push rod 39. The electric push rod 39 is fixedly installed on the top of the protective box 1, and the driving end of the electric push rod 39 is fixedly connected to the connecting ring 37.

[0030] Embodiment Two

[0031] Comparing with Embodiment One, please refer to Figure 5 As shown in the figure, the present utility model provides another implementation manner. A cleaning component 4 is installed on the mounting bracket 33. The cleaning component 4 includes two first scrapers 41. The two first scrapers 41 are respectively rotatably installed on the upper and lower surfaces of the mounting bracket 33 through torsion spring rotating shafts. One end of the first scraper 41 abuts against the pulley 34. When the pulley 34 is lifted and lowered in the well, its surface will adhere to dirt such as sludge. The first scraper 41 abuts against the pulley 34 through the torsion force of the torsion spring, and scrapes the dirt on its surface when the pulley 34 rotates, preventing it from affecting the normal sliding of the pulley 34 on the well wall.

[0032] The cleaning component 4 further includes a driver 42. The driver 42 is fixedly installed on one side of the mounting bracket 33, and the driving end of the driver 42 is fixedly connected to the shaft of the pulley 34. The rotation state of the pulley 34 can be detected by a rotation speed sensor 43. When the pulley 34 is completely stuck and cannot rotate normally, the rotation speed sensor 43 detects that the rotation speed of the pulley 34 disappears, transmits a signal to control the driver 42 and the electric telescopic rod 44 to operate. The driver 42 drives the pulley 34 to rotate, and at the same time the electric telescopic rod 44 extends so that the second scraper 45 abuts against the outer wall of the pulley 34, thereby cleaning the pulley 34 when it is stuck.

[0033] The cleaning component 4 further includes a rotational speed sensor 43. The rotational speed sensor 43 is fixedly installed on the other side of the mounting bracket 33, and the rotational speed sensor 43 is connected to the shaft of the pulley 34. Specifically, a gear made of a magnetically conductive material (such as iron or steel) is installed on the shaft of the pulley 34. The gear should be processed into an involute tooth profile with a module greater than a certain value to ensure precise matching with the sensor. Align the Hall, magnetoresistive, or eddy current sensor radially with the gear, and keep the installation gap between 0.5 and 2 millimeters.

[0034] The cleaning component 4 further includes an electric telescopic rod 44. The electric telescopic rod 44 is fixedly installed at the center of the mounting bracket 33.

[0035] The driving end of the electric telescopic rod 44 is fixedly connected with a second scraper 45. The second scraper 45 is triangular or Y-shaped.

[0036] Persons in the art connect all the electrical components in this case to their adapted power supplies through wires. And according to the actual situation, a suitable controller should be selected and electrically connected to the electric push rod 39, the electric telescopic rod 44, the pressure sensor 36, the driver 42, the pressure test detector, and the rotational speed sensor 43. The controller is fixedly installed inside the protective box 1, and the controller is electrically connected with a signal transmitter to meet the control requirements. For the specific connection and control sequence, refer to the sequential working order among the electrical components in the following working principle to complete the electrical connection. The detailed connection means are well-known techniques in the art. The following mainly introduces the working principle and process, and will not explain the electrical control.

[0037] Working principle: When in use, connect the connecting cylinder 2 to the winding equipment. Through the winding equipment, the protective box 1 is gradually lowered into the position in the well that needs to be pressure-tested during wire unwinding. Then, expose the pressure test detector to conduct a pressure test on the inside of the well, and the detected values are sent to the remote device and the computer through the signal transmitter.

[0038] When the protective box 1 is lifted and lowered in the well, the connecting ring 37 is pushed up and down by the electric push rod 39. When the connecting ring 37 moves up and down, it drives the adjusting rod 38 and the support rod 31 to rotate, so as to expand or retract the support rod 31, enabling the pulley 34 to abut against the well wall and move, thereby enhancing the stability of the protective box 1. When the support rod 31 is expanded, the pulley 34 abuts against the well wall, pushing the mounting bracket 33 to compress the limit spring 35 and squeeze the pressure sensor 36. When the pressure sensor 36 detects a pressure signal, it transmits a signal to control the electric push rod 39 to stop operating, so that the support rod 31 can be accurately expanded according to the diameter of the well wall. When the size of the well wall changes, the pressure exerted by the mounting bracket 33 on the pressure sensor 36 will change. When the pressure increases, the support rod 31 retracts; when the pressure decreases, the support rod 31 continues to extend until the pressure value reaches a predetermined threshold, and then the electric push rod 39 stops operating. Thus, the position of the pulley 34 can be flexibly adjusted according to the change in the diameter of the well inside, so that the pulley 34 can always abut against the well wall.

[0039] When the pulley 34 is lifted and lowered in the well, dirt such as sludge will adhere to its surface. The first scraper 41 abuts against the pulley 34 by the torsion of the torsion spring, and scrapes off the dirt on its surface when the pulley 34 rotates, preventing it from affecting the normal sliding of the pulley 34 on the well wall.

[0040] The rotation state of the pulley 34 can be detected by the rotation speed sensor 43. When too much dirt accumulates on the surface of the pulley 34 and it is completely stuck and unable to rotate normally, the rotation speed sensor 43 detects that the rotation speed of the pulley 34 disappears, and transmits a signal to control the operation of the driver 42 and the electric telescopic rod 44. The driver 42 drives the pulley 34 to rotate, and at the same time the electric telescopic rod 44 extends so that the second scraper 45 abuts against the outer wall of the pulley 34, thereby cleaning the pulley 34 when it is stuck, which can make up for the deficiency of the first scraper. By using the first scraper 41 and the second scraper 45 in cooperation, the dirt attached to the surface of the pulley 34 can be effectively removed.

[0041] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0042] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present utility model claimed.

Claims

1. A well control safety pressure testing device for drilling engineering, including a protective box (1), wherein a pressure testing detector is arranged inside the protective box (1), and it is characterized in that: A connecting cylinder (2) is fixedly connected to the top of the protective box (1). A number of slots are formed on the surface of the connecting cylinder (2). An adjustable support assembly (3) is installed on the connecting cylinder (2). The adjustable support assembly (3) includes a number of support rods (31) and a connecting ring (37). The support rods (31) are annularly distributed and are rotatably connected to the connecting cylinder (2) through shafts. One end of the support rod (31) away from the connecting cylinder (2) is fixedly connected to an installation cavity (32). A U-shaped installation frame (33) is slidably connected inside the installation cavity (32). A pulley (34) is rotatably connected inside the installation frame (33) through a shaft. A number of limiting springs (35) are fixedly connected to the side wall of the installation frame (33), and the other ends of the limiting springs (35) are fixedly installed inside the installation cavity (32). A pressure sensor (36) is fixedly connected to the inner wall of the installation cavity (32).

2. The well control safety pressure testing device for drilling engineering according to claim 1, characterized in that: The connecting ring (37) passes through the slots and is sleeved on the connecting cylinder (2). A number of adjusting rods (38) are hinged to the side wall of the connecting ring (37), and one end of the adjusting rod (38) away from the connecting ring (37) is hinged to the support rod (31).

3. The well control safety pressure testing device for drilling engineering according to claim 1, characterized in that: The adjustable support assembly (3) further includes an electric push rod (39). The electric push rod (39) is fixedly installed on the top of the protective box (1), and the driving end of the electric push rod (39) is fixedly connected to the connecting ring (37).

4. The well control safety pressure testing device for drilling engineering according to claim 1, characterized in that: A cleaning assembly (4) is installed on the installation frame (33). The cleaning assembly (4) includes two first scrapers (41). The two first scrapers (41) are respectively rotatably installed on the upper and lower surfaces of the installation frame (33) through torsion spring shafts. One end of the first scraper (41) abuts against the pulley (34).

5. The well control safety pressure testing device for drilling engineering according to claim 4, characterized in that: The cleaning assembly (4) further includes a driver (42). The driver (42) is fixedly installed on one side of the installation frame (33), and the driving end of the driver (42) is fixedly connected to the shaft of the pulley (34).

6. The well control safety pressure testing device for drilling engineering according to claim 4, characterized in that: The cleaning assembly (4) further includes a rotational speed sensor (43). The rotational speed sensor (43) is fixedly installed on the other side of the installation frame (33), and the rotational speed sensor (43) is connected to the shaft of the pulley (34).

7. The well control safety pressure testing device for drilling engineering according to claim 4, characterized in that: The cleaning assembly (4) further includes an electric telescopic rod (44). The electric telescopic rod (44) is fixedly installed at the center of the installation frame (33).

8. The well control safety pressure testing device for drilling engineering according to claim 7, characterized in that: The driving end of the electric telescopic rod (44) is fixedly connected to a second scraper (45). The second scraper (45) is triangular or Y-shaped.

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