RU2772034C1 - System for wiping the tool joint of a drilling pipe - Google Patents

Abstract

FIELD: mining.

SUBSTANCE: invention relates to the petroleum and gas industry and mining, namely, to an apparatus for removing drilling mud from the outer surface of drilling pipes. The system for wiping the tool joint of a drilling comprises at least two quick-release cartridges attached on roller carriages, configured for reciprocating movement along a rail system. The wiping part of the cartridges is made of an elastic material and has central holes forming a round hole upon closure. The system is controlled automatically. The automatic control system is implemented by reading the RFID tag installed on the drilling pipe, computer processing of the information read from the RFID tag, and ensures the movement of the cartridges to form a hole, with a diameter equal to the diameter of the drilling pipe at the moment of passage thereof through the cartridges, between said cartridges. The body of each of the quick-release cartridges is made metal and protected by at least two casings. The roller carriages are configured to move by means of pneumatic cylinders controlled by the automatic control system.

EFFECT: creation of an effective wiping system ensuring the removal of contamination from varying-diameter pipes without interrupting the operation thereof, and ensuring maintainability by means of quick cartridge replacement.

7 cl, 5 dwg

Description

FIELD OF TECHNOLOGY

The invention relates to the oil and gas and mining industries, and in particular to a device for removing drilling mud from the outer surface of drill pipes, and can be used both in well drilling and tripping operations.

PRIOR ART

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, a device for protecting the wellhead (see RU124305U1, publ. 20.01.2013) (1), made in the form of a housing consisting of two pivotally connected C-shaped parts installed with the possibility of grasping the pipe of the installation of an electric centrifugal pump and made with protective elements in the pipe setting areas with the possibility of preventing various elements from entering the well when using pipes of different diameters, while a flexible protective apron is mounted on the outside along the perimeter of the parts, which serves to protect the well from the external environment.

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

Also known from the prior art is a device for removing drilling fluid from the outer surface of drill pipes (options) (see RU88728U1, publ 20.11.2009) (2). The utility model relates to the oil and gas industry, namely, to a device for removing drilling fluid from the surface of drill pipes and can be used both in well drilling, tripping operations, and well workover. To ensure the removal of drilling fluid from the outer surface of the drill pipes when lifting them from the well, to expand the functionality, and to prevent foreign objects from entering the well, the device for removing drilling fluid from the surface of the drill pipes (option 1) contains a housing with an elastic element, while the housing made in the form of a solid, reinforced disc made of elastic material, provided with holes for fastening on the tool and a central hole with corrugations, the diameter of the central hole corresponds to the diameter of the drill pipe being wiped, the corrugations located parallel to the plane of the disk have radial slot-like cuts, while the slot-like cuts and walls of the central the holes are made with an inclination at an angle of 7°-15° relative to the axis of the disk to ensure complete coverage of the diameter of the drill pipe being wiped. To ensure the removal of drilling fluid from the outer surface of the drill pipes when lifting them from the well, to expand the functionality, and also to prevent foreign objects from entering the well, the device for removing drilling fluid from the surface of the drill pipes (option 2) contains a housing with an elastic element, while the housing made in the form of a disk with holes for mounting on a tool and a replaceable reinforced insert made of elastic material connected to the disk by means of a detachable connection, while the replaceable insert is made with a central hole with corrugations, the diameter of the central hole corresponds to the diameter of the drill pipe being wiped, corrugations located parallel to the disk plane have radially made slit-like cuts, while the slit-like cuts and the walls of the central hole are made with an inclination at an angle of 7°-15° relative to the disk axis to ensure complete overlapping of the diameter of the drill pipe being wiped.

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

Also known is a pipe wellhead self-centering wiper of the "OTUS " series (see RU2745503C1, publ. 03/25/2021) (3). The self-centering pipe wellhead wiper contains a body consisting of one or two interconnected discs with through-hole diameters in the center. The discs are made in the form of a crescent or a solid ring and contain through holes and/or threaded connections for studs or nuts. Moreover, the holes on the upper disk have potai. The upper disk contains upper and lower horizontal radial bores, the upper one is intended for installation of an elastic wiper in it, and the lower bore, together with the lower disk, forms a cavity in which a ring is placed that is installed during the tripping of the tubing, which has the possibility of horizontal rotation around its axis and the value stroke in the radial direction. The ring contains outer and inner collars, the first one is intended for installation and fixation of an elastic wiper installed during tubing tripping, thanks to which the replaceable elastic wiper does not slip when a coupling or lock passes through it, and the last one is for safe passage of pipes and/or tools and /or equipment through the passage diameter of the ring and is made with chamfered or in the form of a cone. The elastic wiper installed during the tripping of the tubing with the ESP cable is made in the form of a flat disk with an internal bore diameter for passing pipes with the ESP cable and protectors with cleats through it. From the inner hole of the elastic wiper in the radial direction, cuts are made to form "petals", which are bent at the moment of passage of the sleeve with protectors and clips, thereby preventing rupture and deformation of the elastic wiper. At the base of one of the "petals" there is a cutout for the cable, in which spikes are located to block the free space from the cable. The outer diameter of the elastic wiper installed during the tripping of the tubing with the ESP cable contains a lock according to the "folder-mother" principle. The elastic wiper, installed when lowering and raising the tubing, has a dish-shaped shape with an inner diameter for pipes to pass through it, on one side of the elastic wiper, an L-shaped shoulder is made along the outer diameter, which, together with the plane, forms a pharynx around the entire circumference for the possibility of hooking on the outer ring collar.

The scrubber (3) is to some extent devoid of the shortcomings of the previous analogues (1) and (2), but not completely devoid of them.

The closest analogue of the claimed device, according to the applicant, is a frameless cleaner (see. US2010200219A1, publ. 12.08.2010) (4). Frameless pipe cleaner, contains: a fixed drive unit having a length that ends at the ends, a width that ends at the sides, and consists of a clamp having side elements, a base having side elements, a wiper element located between said clamp and said base and attached to each side, said base is a longitudinal sliding assembly having an upper portion that is separated from and overhangs at least a portion of an adjacent side member of said clip, thereby forming a pair of longitudinally spaced channels between each of the side members of said clip and said vertex of a portion of said slip nodes;

In said pair of channels, a sliding actuator assembly is located with the possibility of sliding, having a length that ends at the ends, a width that ends at the sides, and consists of a clamp having side elements, a base having side elements, a wiper element located between the specified clamp and specified base; as well as,

a pair of pneumatic cylinders, the first of which has a housing attached to one of the specified sides of the specified fixed actuator assembly, and has a rod that is removably attached to the adjacent side of the sliding actuator assembly, and the second of which has a housing that is attached to the opposite side of the specified fixed the actuator assembly and has a shaft that is removably attached to the adjacent side of the sliding actuator assembly.

The proposed closest analogue comes closest to solving the problems solved by the claimed invention, 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.

SUMMARY OF THE INVENTION

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 present invention is directed to solving a technical problem associated with increasing the efficiency of removing contaminants from a drill pipe wiping system.

The technical result of the invention is the creation of an effective wiping system that removes contaminants from pipes of various diameters without interrupting its operation, as well as providing maintainability by quickly removing cartridges.

Achieving the set goals is possible with the help of a drill pipe joint wiping system containing at least two quick-detachable cartridges mounted on roller carriages with the possibility of reciprocating movement along the rail system, the wiping part of the cartridges is made of an elastic material and has central holes that, when when closed, they form a round hole equal to the diameter of the drill pipe.

The drill pipe wiping system is characterized by the fact that

The system is controlled automatically.

The automatic control system (ACS) is implemented by reading the RFID tag installed on the drill pipe, computer processing the information read from the RFID tag (a unique identifier by which all the necessary parameters of the pipe or other drilling tool are determined online) and ensures the movement of cartridges for the formation of a hole between them with a diameter equal to the diameter of the drill pipe at the time of its passage through the wiper.

The ACS also separates the cartridges if a non-standard drilling tool of unknown diameter passes by them, which helps to prevent accidents.

The body of each of the quick-release cartridges is made of metal and is protected by at least two casings;

roller carriages are made with the possibility of movement by means of pneumatic cylinders, also controlled by ACS.

In a private embodiment, the body of the quick-release cartridge is made of aluminum.

In one of the embodiments of the invention, the wiping part of the quick-release cartridge is made of rubber.

In yet another embodiment, the system includes two quick release cartridges.

In a private embodiment, the system contains four quick-release cartridges.

The automated control system can, in particular, be equipped with a programmable logic integrated circuit (FPGA) that provides transmission and storage of information from the RFID tag.

In a particular embodiment, the holes in the center of the wiping part of the cartridge are made in the form of a semi-oval, passing to the edge into a triangle.

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

BRIEF DESCRIPTION OF THE FIGURES

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

Fig. 1 is a schematic representation of a drill pipe wiping system with open cartridges;

Fig. 2 is a schematic representation of a drill pipe wiping system with closed cartridges;

Fig. 3 is a diagram of the drill pipe wiping system with the pipe itself in the working, closed position.

Fig. 4 is a diagram of a drill pipe wiping system with the pipe itself in the open position.

Fig.5 is an enlarged view of the protective cover.

In Fig.1-5 position denote the following:

1 - quick-release cartridges of the drill pipe lock wiping system;

2 - rail system;

3 - protective cover;

4 - roller carriages;

5 - pneumatic cylinder;

6 - drilling tool;

7 - drill string;

8 - chisel;

9 - elements the layout of the lower part of the drill string (BHA).

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.

EMBODIMENT OF THE INVENTION

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 drill pipe joint wipe system consists of several quick-release cartridges, in the given example the system contains two cartridges, but it is possible to make a system of four interlocking cartridges. It is also possible to use a system with a large number of cartridges. Cartridges have a body and wiping parts. The body is made of metal. predominantly of aluminum, and the wiping parts are made of an elastic material such as rubber. The wiping parts have in their central part a hole in the form of a semi-oval, turning to the edge into a triangle, when closed, the wiping parts form a hole with a diameter equal to the diameter of the pipe passing through them. The cartridges are also equipped with two protective covers. Changing the distance between the cartridges is regulated by means of pneumatic cylinders controlled by an automatic control system. The ACS is implemented on a programmable logic integrated circuit (FPGA), which receives a signal from an RFID tag placed on the drill pipe.

The application of this invention 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 through it freely. 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.

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 pneumatic cylinders. Depending on the diameter of the drill pipe and the time it takes to pass through the drill pipe wiping system, the pneumatic cylinders 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 passing through it at the moment . Further, the cartridges open, 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 is 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 in rotary drilling, the 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.

INDUSTRIAL APPLICATION

The proposed devices are designed for a number of applications, including the removal of contaminants from pipes during drilling drilling in the oil, gas and mining industries.

Claims (7)

1. A system for wiping the lock of a drill pipe, containing at least two quick-release cartridges mounted on roller carriages with the possibility of reciprocating movement along a rail system, the wiping part of the cartridges is made of an elastic material and has central holes that, when closed, form a round hole, which differs the fact that the system is controlled automatically; the automatic control system is implemented by reading the RFID tag installed on the drill pipe, computer processing the information read from the RFID tag and moving the cartridges to form a hole between them with a diameter equal to the diameter of the drill pipe at the moment it passes through the cartridges; the body of each of the quick-release cartridges is made of metal and is protected by at least two casings; roller carriages are made with the possibility of movement by means of pneumatic cylinders controlled by an automatic control system. 2. The system according to claim. 1, characterized in that the body of the quick-release cartridge is made of aluminum. 3. The system according to claim 1, characterized in that the wiping part of the quick-release cartridge is made of rubber. 4. The system according to claim 1, characterized in that it contains two quick-release cartridges. 5. The system according to claim 1, characterized in that it contains four quick-release cartridges. 6. The system according to claim 1, characterized in that the automatic control system is equipped with a programmable logic integrated circuit (FPGA) that provides transmission and storage of information from the RFID tag. 7. The system according to claim. 1, characterized in that the central holes of the wiping part of the cartridge are made in the form of a semi-oval, passing to the edge into a triangle.

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