RU209681U1 - AUTO SHUTTER - Google Patents

Abstract

The utility model relates to the oil and gas and mining industries, namely, to a device for removing drilling fluid from the outer surface of drill pipes, and can be used both in drilling wells and in tripping operations. The technical result of the utility model is the creation of an auto wiper that removes contaminants from pipes of various diameters without interrupting the operation of the drill string. The auto wiper contains two quick-detachable cartridges fixed on a lever system containing a bar with a central hole in which the center of fastening of two levers is located with the possibility of reciprocating movement. On each of the levers there is a quick-release cartridge. The fastening center of quick-detachable cartridges is fixed on the bar. The wiping part of the cartridges is made of an elastic material and has central holes, which, when closed, form a round hole. The autoblade is equipped with an automatic control system implemented by a programmable logic integrated circuit (FPGA) that provides transmission and storage of information from an RFID tag installed on the drill pipe, as well as the movement of cartridges to form a hole between them. The wiping part of the cartridge has the shape of a sector of a circle with a hole in the middle, the angle of which is more than 180°, but less than 260°. When closed, the wiping parts overlap each other. 3 ill.

Description

The utility model relates to the oil and gas and mining industries, namely, to a device for removing drilling fluid from the outer surface of drill pipes, and can be used both in drilling wells and in tripping operations.

Wipers are widely known for cleaning tubing and drill pipes from well fluid and preventing foreign objects from falling into the well.

It is known, in particular, the leak detector of the stuffing box of the wellhead and the container (see US 5394939 A, publ. 03/07/1995) (1). The wellhead stuffing box leak detector and container are installed around the stuffing box of an oil well pumping unit and provide containment for any fluid leakage due to worn packing or seals inside the stuffing box. The device is relatively inexpensive to manufacture because it consists mainly of sheet and angle material. The bottom seal or gasket is raised off the floor of the unit to prevent liquid saturation and leakage from the bottom seal, and a non-concentric offset sump is provided. The sump includes an explosion-proof float assembly and a switch that can be set to a predetermined position to activate an alarm and/or shut off the pump if excess liquid comes out of the stuffing box and collects in the sump. The device is formed by two semi-cylindrical halves which are hinged to allow easy installation near the wellhead T under the stuffing box and the polishing rod extending from the top of the stuffing box.

The device (1) has a number of disadvantages, such as difficulty in use, low wiping efficiency.

A wiper for removing drilling fluid from a drill string is also known from the prior art (see CA 2250654 A1, publ. 20.04.2000) (2). The wiper comprises an elongated conveyor arm that can pivot in a horizontal plane and move freely back and forth for a limited stroke (movement capabilities are collectively referred to as "floating" capability). A wiper pad is installed on the outer end of the arm. Thus, the wiper assembly can float with the arm to compensate for the lateral and reciprocating movement of the drill string within the rig's turntable hub when the wiper shoes engage the drill string. The lever can extend and retract to move the wiper gasket assembly between a stripping operating position above the bushing and a retracted position on one side of the bushing.

The analogue device (2) is more efficient than analogue (1), however, it does not ensure the removal of contaminants from pipes of different diameters.

The closest analogue of the claimed device, according to the applicant, are tools for wiping and cleaning well pipes (see US2850754A, publ. 09/09/1958) (3). This invention relates to a device for wiping and cleaning downhole pipes. In particular, the tool is intended for use in rotary oil drilling rigs. In such installations, drill pipes must be frequently retrieved from the well, disconnected, and placed on a rig.

This handheld tool can be quickly and easily clamped onto the drill string and clean the adhering materials from the drill pipe during the pulling process, keeping the pipes on the rig dry and clean.

Pipe wiping tool, includes: a handle made from a partially flattened pipe; two arcuate bands, two connecting rods, ball bushings, hand lever, spring, etc. This design is assembled in such a way that the tool is in the open position by default. When the lever is manually pressed, the connecting rods close the arcuate bands and move the device to the closed position. Arcuate bands now elastically and tightly wrap around the entire circumference of the pipe. The pipe is then pulled out of the well and passed through the tool. The tapes exert a compressive effect on the pipe to clear the pipes of contaminants.

The proposed closest analogue comes closest to solving the problems solved by the claimed device, however, according to the applicant, the problem is not solved in the most efficient way.

These devices have a sufficiently high efficiency of removing contaminants, however, they are designed to remove contaminants from pipes with predetermined parameters.

Accordingly, there is a need to eliminate at least some of the disadvantages mentioned above. In particular, there is a need for a system that can handle pipes with different pipe diameters along the length.

The claimed utility model is aimed at solving a technical problem associated with increasing the efficiency of removing contaminants by the drill pipe wiping system.

The technical result of the utility model is the creation of an auto wiper that removes contaminants from pipes of various diameters without interrupting the operation of the drill string.

Achieving the set goals is possible with the help of an auto-cleaner containing two quick-detachable cartridges mounted on a lever system containing a bar with a central hole in which the center of fastening of two levers is located with the possibility of reciprocating movement, each of which has a quick-detachable cartridge, the center of fastening of quick-detachable cartridges fixed on the bar, the wiping part of the cartridges is made of elastic material and has central holes, which, when closed, form a round hole, while the proposed autowiper is equipped with an automatic control system implemented by a programmable logic integrated circuit (FPGA), which provides the transmission and storage of information from the RFID tag , which is installed on the drill pipe, as well as moving the cartridges to form a hole between them with a diameter equal to the diameter of the drill pipe at the time it passes through the cartridges and pushing the cartridges apart if a carrier passes by them standard drilling tool of unknown diameter. The presence of an FPGA chip as part of the proposed autowiper allows you to completely eliminate the human factor from the process of cleaning drilling tools of different diameters.

In a particular embodiment of the utility model, the wiping portion of the cartridge has the shape of a sector of a circle with a hole in the middle, the angle of which is more than 180°, but less than 260°, thus, in the closed state, the wiping parts overlap each other.

The above and other objects, advantages and features of the present utility model will become more apparent from the following non-limiting description of its exemplary embodiment, given as an example with reference to the accompanying drawing.

The essence of the utility model is illustrated by drawings, in which:

fig. 1 is a schematic representation of an auto-wiper in the open position;

fig. 2 is a schematic representation of the autowiper in the closed position;

Fig.3 is a schematic representation of the autowiper, side view;

Fig.4 is an image of an auto-wiper placed on the drill string.

In figure 1, 2 positions denote the following:

1 - quick-release cartridge;

2 - lever system;

3 - bar;

5 - lever.

These drawings do not cover and, moreover, do not limit the entire scope of options for implementing this technical solution, but are only illustrative material of a particular case of its implementation.

Drill strings used in drilling oil and gas wells consist of various types of pipes. Deep wells often have more than 600 drill pipe joints in the wellbore, in addition to drill pipe, drill strings can include tools such as drill collars, reamers, stabilizers, butt adapters for various threaded connections, relief valves, special logging tools.

Drill pipes are the main part of the drill string intended for lowering into a borehole and lifting a rock cutting tool, transmitting rotation, creating an axial load on the tool, and transporting drilling fluid to the bottom of the well. They also make up a significant part of all the costs of oil and gas production. Therefore, it is important to have effective means of cleaning pipes from contamination.

The claimed auto wiper contains two quick-release cartridges mounted on a lever system. The wiping part of the cartridges is made of an elastic material and has central holes, which, when closed, form a round hole. Advantageously, the wiping portion of the cartridge is in the form of a sector of a circle with a hole in the middle, the angle of which is greater than 180° but less than 260°, so that the wiping portions overlap each other when closed.

The lever system consists of a bar with a central hole, in which the fastening center of two levers is located with the possibility of reciprocating movement, each of which has a quick-detachable cartridge, the fastening center of quick-detachable cartridges is fixed on the bar.

The auto wiper is equipped with an automatic control system (ACS) associated with a lever system for closing the cartridges. The automated control system is implemented on a programmable logic integrated circuit (FPGA), which provides the transmission and storage of information from an RFID tag installed on the drill pipe, as well as the movement of cartridges to form a hole between them with a diameter equal to the diameter of the drill pipe at the time of its passage through the cartridges and the expansion of the cartridges if a non-standard drilling tool of unknown diameter passes by them.

The use of this device is to install the so-called "cube" at the wellhead. Inside this cube, a system for wiping the lock of the drill pipe is installed. By default, the cube is in the open position and the entire drill string passes freely through it. After drilling is completed, the drill string is lifted out of the well and again passes through the system. However, during the lifting phase, the cartridges of the tool joint wipe system are shifted so as to clear the drilling fluid from the passing pipe. With this version of the wiper, you can easily remove or install the cube at the wellhead. For example, if you need to install a cube, the wiper opens, the cube is rolled up along the rails and the wiper closes.

The wiping control system receives information from an RFID tag installed on the drill pipe. This information is read, processed and transmitted to the automated control system by the complex for analyzing the operation of the drilling rig (ARBI). It is received, analyzed and stored by a programmable logic integrated circuit (FPGA), which sends a movement signal to the lever system. Depending on the diameter of the drill pipe and the time it takes to pass through the drill pipe wiping system, the levers move to the required distance, so that at the moment a pipe of a certain diameter passes through the system, the replaceable cartridges, closing, form a hole with a diameter equal to the diameter of the pipe currently passing through it. pipes. Further, the cartridges are opened, which makes it possible to pass through them to the rest of the drilling system, in particular the bit.

Thus, when using a drill pipe joint wipe system:

it is possible to regulate the diameter of the hole inside the cartridges during the operation of the device, without replacing the cartridges. When repairing cartridges, their quick removal is also ensured by means of a quick-release fastener;

no installation/dismantling required during drilling with different tools, the system can be installed at the initial stage of drilling and dismantled at the final stage of drilling;

the system automatically switches to the working position during the passage of drill pipes, it is possible to switch to the working position only when lifting, further reducing the wear of the wiping element;

the system automatically expands (transfers to a non-working position) when tripping the bit, BHA elements, casing, thus minimizing the possibility of damage and additional wear;

it is possible to use it for rotary drilling, a feature of which is the descent of a square pipe into the under-rotor space, which leads to rapid (premature wear) of the wiping element.

the possibility of a simple transfer of the KUB device to the service position for installation work in the under-rotor space without the need for manual operations to disassemble the wiper.

The proposed device is intended for a number of applications, including the removal of contaminants from pipes during drilling drilling in the oil, gas and mining industries.

Claims (1)

Auto wiper containing two quick-release cartridges fixed on a lever system containing a bar with a central hole in which the center of fastening of two levers is located with the possibility of reciprocating movement, each of which has a quick-release cartridge, the center of fastening of quick-release cartridges is fixed on the bar, the wiping part cartridges is made of elastic material and has central holes, which, when closed, form a round hole, characterized in that it is equipped with an automatic control system implemented by a programmable logic integrated circuit (FPGA), which provides transmission and storage of information from an RFID tag, which is installed on the drill pipe, as well as moving the cartridges to form a hole between them, while the wiping part of the cartridge has the shape of a sector of a circle with a hole in the middle, the angle of which is more than 180°, but less than 260°, thus, in the closed state, the wiping parts overlap other friend's corner.

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