Intelligent oil pipe drift diameter gauge and control method

Abstract

The invention discloses an intelligent oil pipe drift diameter gauge and a control method, the intelligent oil pipe drift diameter gauge comprises an oil pipe drift diameter gauge body, a first driving unit and a second driving unit, the first driving unit and the second driving unit are arranged at the two ends of the oil pipe drift diameter gauge body respectively, and a battery bin and a controller are arranged in the oil pipe drift diameter gauge body; a corresponding charging port and a switch are arranged on the outer surface of the body, and the oil pipe drift diameter gauge body is connected with the first driving unit and the second driving unit at the two ends through a sleeve gauge. According to the scheme, the functions of accelerating, decelerating and braking of the drift diameter gauge are achieved through program design and cooperation with the sensor, the purposes that the drift diameter gauge can pass through the inner diameter within 10 seconds and just stops at an oil pipe outlet are achieved, the effect that the drift diameter gauge cannot rush out of an oil pipe to fall on the ground is achieved, and the function of measuring the length of the oil pipe is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of oilfield well repair detection equipment, and in particular to an intelligent oil pipe diameter gauge and a control method. Background Art

[0002] Before the oil pipe enters the well, it must be inspected on site. That is, when inspecting the deformation or foreign matter of the pipe before it is lowered to the work site, it is necessary to pass the standard diameter gauge inside the pipe to detect whether the pipe body is deformed and whether there is foreign matter blocking the casing in the pipe, so as to ensure the quality of the pipe lowered into the well. The standard and operation method of using the diameter gauge for the on-site diameter pipe are generally: (1) Use a metal straight running pipe with a length of 0.8-1.2m and a plug at both ends that is 3-4mm smaller than the inner diameter of the oil pipe to conduct a through-test on the oil pipe.

[0003] (2) Before the completion operation, the oil pipes to be lowered into the well are arranged on the oil pipe row in front of the operating wellhead. Before each oil pipe is lowered into the well, the diameter gauge is pushed into the oil pipe through the end of the oil pipe with the oil pipe coupling. Then, the wellhead personnel hang the traveling block hook and the traveling driller lifts the traveling block hook and pulls up the oil pipe. As the height of the oil pipe hook increases, the oil pipe is also pulled up. The diameter gauge in the oil pipe will slide out at the other end of the oil pipe slideway in the oil pipe as the height of the oil pipe increases.

[0004] The existing technical solutions generally adopt the method of using a wooden pole or a wire rope to pull the diameter gauge, which is inefficient and labor-intensive. The manual method of pulling a tape measure to measure the length of the oil pipe is inefficient, and the data recording may have problems such as manual statistical errors. Therefore, it is necessary to design a more intelligent diameter gauge. Summary of the invention

[0005] In view of the above technical problems, the present invention provides an intelligent oil pipe diameter gauge and a control method.

[0006] The present invention is implemented by adopting the following technical scheme: an intelligent oil pipe diameter gauge, comprising an oil pipe diameter gauge body and a first drive unit and a second drive unit respectively arranged at two ends of the body, a battery compartment and a controller are arranged inside the oil pipe diameter gauge body, and a corresponding charging port and a switch are arranged on the outer surface of the body, and the oil pipe diameter gauge body is connected to the first drive unit and the second drive unit at both ends through a casing gauge.

[0007] Specifically, one end of the first driving unit and the second driving unit is connected to the oil pipe diameter gauge body, and the other end is provided with a handle.

[0008] Specifically, a driven wheel is installed inside the first driving unit, and a pipe outlet sensor is also arranged near one end of the handle.

[0009] Specifically, a driving wheel is arranged inside the second driving unit for driving, and the driving wheel is connected to a clamping and metering wheel.

[0010] Specifically, the second driving unit is provided with a pipe inlet sensor close to one end of the handle.

[0011] Specifically, a brake grinding block and a matching brake electromagnet are arranged on the outer side of one end of the second driving unit close to the handle.

[0012] The intelligent oil pipe diameter gauge control method is implemented based on the intelligent oil pipe diameter gauge, and includes: Acceleration stage: When the gauge inlet sensor S1 and outlet sensor S2 send signals at the same time, the travel motor is immediately started to rotate forward at the highest acceleration, and the travel distance is L1; High-speed stage: the motor moves at a constant speed v1 at maximum speed, and the travel distance is L2; Deceleration stage: when the walking distance > L1 + L2, the speed enters the reduction stage, and the walking distance is L3; Low-speed stage: When there is no signal from the bore gauge inlet sensor S1, it immediately enters the low-speed stage with a speed of v2 and a travel distance of L4; Braking stop phase: Braking with maximum braking force, braking distance L5.

[0013] Specifically, the maximum uniform speed v1 is obtained based on the rated torque of the motor and the system friction resistance, and the walking distance L1 in the acceleration phase is obtained based on the mass of the diameter gauge, the maximum torque of the motor and the system friction resistance.

[0014] Specifically, the distance Ls between the diameter gauge inlet pipe sensor S1 and the outlet pipe sensor S2 is set to 410 mm.

[0015] Specifically, the low-speed stage travel distance L4 is set according to the change in the length of the oil pipe, and the braking distance L5 is the distance from the speed v2 to 0 at the maximum braking force, L5≤Ls*0.4.

[0016] The beneficial effects of the present invention are as follows: the present invention realizes the acceleration, deceleration and braking functions of the diameter gauge through program design and cooperation with sensors, so as to achieve the purpose of completing the inner diameter within 10 seconds and stopping just at the oil pipe outlet without rushing out of the oil pipe and falling to the ground, and has the function of measuring the length of the oil pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0018] Figure 1 Schematic diagram of an intelligent oil pipe diameter gauge in an embodiment of the present invention; Figure 2 The figure is a schematic diagram of intelligent oil pipe diameter gauge control in one embodiment of the present invention. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0021] The following is combined with Figure 1-2 , some embodiments of the present invention are described in detail. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0022] The present invention proposes an intelligent oil pipe diameter gauge and a control method, such as Figure 1 As shown, the intelligent oil pipe diameter gauge includes an oil pipe diameter gauge body and a first drive unit and a second drive unit respectively arranged at two ends of the body. A battery compartment and a controller are arranged inside the oil pipe diameter gauge body, and a corresponding charging port and a switch are arranged on the outer surface of the body. The oil pipe diameter gauge body is connected to the first drive unit and the second drive unit at both ends through a casing gauge.

[0023] In this embodiment, one end of the first driving unit and the second driving unit is connected to the oil pipe diameter gauge body, and the other end is provided with a handle.

[0024] In this embodiment, a driven wheel is installed inside the first driving unit, and a pipe outlet sensor is also provided near one end of the handle.

[0025] In this embodiment, a driving wheel is arranged inside the second driving unit for driving, and the driving wheel is connected to a pressing and metering wheel.

[0026] In this embodiment, a pipe inlet sensor is disposed near one end of the handle of the second driving unit.

[0027] In this embodiment, a brake grinding block and a matching brake electromagnet are arranged on the outer side of one end of the second driving unit close to the handle.

[0028] The present invention also proposes a control method for an intelligent oil pipe diameter gauge, which is implemented based on the intelligent oil pipe diameter gauge and includes: Acceleration stage: When the gauge inlet sensor S1 and outlet sensor S2 send signals at the same time, the travel motor is immediately started to rotate forward at the highest acceleration, and the travel distance is L1; High-speed stage: the motor moves at a constant speed v1 at maximum speed, and the travel distance is L2; Deceleration stage: when the walking distance > L1 + L2, the speed enters the reduction stage, and the walking distance is L3; Low-speed stage: When there is no signal from the bore gauge inlet sensor S1, it immediately enters the low-speed stage with a speed of v2 and a travel distance of L4; Braking stop phase: Braking with maximum braking force, braking distance L5.

[0029] In this embodiment, the maximum uniform speed v1 is obtained based on the rated torque of the motor and the system friction resistance, and the walking distance L1 in the acceleration phase is obtained based on the mass of the diameter gauge, the maximum torque of the motor and the system friction resistance.

[0030] In this embodiment, the distance Ls between the diameter gauge inlet sensor S1 and the outlet sensor S2 is set to 410 mm.

[0031] In this embodiment, the low-speed stage travel distance L4 is set according to the change in the length of the oil pipe, and the braking distance L5 is the distance from the speed v2 to 0 at the maximum braking force, L5≤Ls*0.4.

[0032] In one embodiment, the intelligent oil pipe diameter gauge of the present invention uses a tail roller to record the length of the oil pipe, adopts a special small motor in conjunction with a control program, and uses an in-place switch and other functions to ensure that the diameter gauge does not rush out of the oil pipe and fall to the ground, and controls the inner diameter to be completed within 10 seconds.

[0033] In one embodiment, the oil pipe length L ranges from 9.1 to 9.6 meters.

[0034] The distance Ls between the inlet pipe sensor S1 and the outlet pipe sensor S2 of the diameter gauge is 410mm.

[0035] The travel of the drift gauge is divided into: acceleration stage (travel distance L1), high-speed stage (speed v1, travel distance L2), deceleration stage (travel distance L3), low-speed stage (speed v2, travel distance L4), and braking stop stage (braking distance L5).

[0036] in: Determination of v1: Influencing factors include motor rated torque and system friction, which are obtained through experiments; Determination of L1: The mass of the drift gauge, the maximum torque of the motor, and the friction resistance of the system are obtained through experiments; Determination of L4: In order to adapt to the change of oil pipe length, the value range is 0~0.5 meters; Determination of v2: Braking speed from v2 to 0 with maximum braking force, distance L5≤Ls*0.4 (to prevent the diameter gauge from falling from the oil pipe).

[0037] Acceleration stage: When the inlet and outlet sensors of the diameter gauge send signals at the same time, the travel motor is immediately started to rotate forward at the highest acceleration.

[0038] High-speed stage: The motor moves forward at a constant speed v1 at maximum speed.

[0039] Deceleration phase: When walking distance > L1+L2, it enters the reduction phase and decelerates to v2.

[0040] Low speed stage: When there is no signal in S1, it immediately enters the deceleration stage.

[0041] Deceleration and stopping stage: Braking with maximum braking force.

[0042] For the aforementioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the order of the actions described, because according to the present application, some steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are preferred embodiments, and the actions involved are not necessarily required by the present application.

[0043] The above embodiments describe the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the changes and modifications made by those skilled in the art shall be within the scope of protection of the appended claims of the present invention without departing from the spirit and scope of the present invention.

Claims

1. Intelligent oil pipe diameter gauge, characterized by: The utility model comprises an oil pipe diameter gauge body and a first drive unit and a second drive unit respectively arranged at two ends of the body. A battery compartment and a controller are arranged inside the oil pipe diameter gauge body, and a corresponding charging port and a switch are arranged on the outer surface of the body. The oil pipe diameter gauge body is connected with the first drive unit and the second drive unit at two ends through a casing gauge.

2. The intelligent oil pipe diameter gauge according to claim 1, characterized in that: The first driving unit and the second driving unit are connected to the oil pipe diameter gauge body at one end and are provided with a handle at the other end.

3. The intelligent oil pipe diameter gauge according to claim 2, characterized in that: A driven wheel is installed inside the first driving unit, and a pipe outlet sensor is also arranged near one end of the handle.

4. The intelligent oil pipe diameter gauge according to claim 2, characterized in that: A driving wheel is arranged inside the second driving unit for driving, and the driving wheel is connected to a clamping and metering wheel.

5. The intelligent oil pipe diameter gauge according to claim 4, characterized in that: The second driving unit is provided with a pipe inlet sensor close to one end of the handle.

6. The intelligent oil pipe diameter gauge according to claim 5, characterized in that: The second driving unit is provided with a brake grinding block and a matching brake electromagnet on the outer side of one end close to the handle.

7. An intelligent oil pipe diameter gauge control method is implemented based on the intelligent oil pipe diameter gauge according to any one of claims 1 to 6, characterized in that: include: Acceleration stage: When the inlet sensor S1 and outlet sensor S2 of the diameter gauge send signals at the same time, the travel motor is immediately started to rotate forward at the highest acceleration, and the travel distance is L1; High-speed stage: the motor moves at a constant speed v1 at maximum speed, and the travel distance is L2; Deceleration stage: When the walking distance > L1 + L2, the speed enters the reduction stage, and the walking distance is L3; Low-speed stage: When there is no signal from the bore gauge inlet sensor S1, it immediately enters the low-speed stage with a speed of v2 and a travel distance of L4; Braking stop phase: Braking with maximum braking force, braking distance L5.

8. The intelligent oil pipe diameter gauge control method according to claim 7, characterized in that: The maximum uniform speed v1 is obtained based on the rated torque of the motor and the system friction resistance, and the walking distance L1 in the acceleration stage is obtained based on the mass of the diameter gauge, the maximum torque of the motor and the system friction resistance.

9. The intelligent oil pipe diameter gauge control method according to claim 8, characterized in that: The distance Ls between the diameter gauge inlet pipe sensor S1 and the outlet pipe sensor S2 is set to 410 mm.

10. The intelligent oil pipe diameter gauge control method according to claim 9, characterized in that: The low-speed stage walking distance L4 is set according to the change in the length of the oil pipe, and the braking distance L5 is the distance from the speed v2 to 0 when the braking speed is decelerated from v2 to 0 with the maximum braking force, L5≤Ls*0.4.

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