SU1509534A1 - Arrangement for drilling large-diameter vertical holes with permanent lining - Google Patents

Abstract

The invention relates to the oil industry, specifically, to drilling vertical wells (C) of large diameter for subsequent drilling of radial drainage wells from them. The goal is to increase the reliability of the device and automate the fastening processes. The device includes a rock-breaking tool / PRI / 1, drives 5, 6 of rotation and axial movement of PRI 1 and an expansion mechanism 8 installed with the possibility of interaction with the support sections. At the same time, PRI 1 is made of cones / W / 11, installed in three rows on the frame 12. The paws W 11 are spring-loaded and mounted with the possibility of radial movement by means of a mechanism. The lining sections are made of alternating segments and wedges and are placed on a platform located above the ATI 1. In the housing 4, the chamber 7 and the framework 12 PRI 1 there are central through holes 20-22 through which the production string 23 passes. the PRI drive 1, the slurry pump 53, the flush pump 58, and the drilling process begins. Presents options for the implementation of the mechanism of movement of the Sh 11, the mechanism of separation of the lining sections. 2 hp f-ly, 8 ill.

Description

31509534

devices and automation of fastening processes. The device includes a rock-destroying tool / PRI / 1, actuators 5, 6 of rotation and axial movement of PRI 1 and a spacer mechanism 8 installed with the possibility of interaction with the support sections. At the same time, PRI 1 is made of cutters 11 installed in three rows on the frame 12. Q The feet of the cutters 11 are spring-loaded and mounted with the possibility of radial movement by means of a mechanism. Sections lining made of alternating segments and wedges and placed on

the platform located above the PRI 1. In the housing 4, the chamber 7 and the frame 12 PRE 1 there are central through holes 20-22 through which the production column 23 passes. Simultaneously, the hydraulic cylinder of the strut mechanism, the actuator PRE 1, the ishamic pump 53, the flush pump 58 and the drilling process begins. The embodiments of the mechanism for moving the roller cutter 11, the mechanism for extending the support sections are presented. 2 hp ff, 8 ill.

The invention relates to the oil industry, specifically to drilling large vertical wells for the subsequent drilling of radial drainage wells from them.

The aim of the invention is to increase the reliability of the device and automate the processes of fastening. Fig. 1 shows a device for drilling vertical wells of large diameter; figure 2 - section aa in figure 1; figure 3 - view B in figure 1; figure 4 - section bb In fig.Z; in - Fig.5 - section GG in Fig.4; FIG. 6 is a sectional view of FIG. 1; FIG. 7, view E in FIG. 1; FIG. 8 shows a section of an Ж-Ж in FIG. 7. 35

A device for drilling large vertical boreholes consists of a rock destructive tool 1 mounted on a bearing support 2 in the lower chamber 3 of the housing 4, the U drive 5 of rotation of the rock destructive tool installed in this chamber, the drive 6 of the axial movement of the rock destructive tool located in the upper chamber 7 of the building-45 ca 4, the spacer mechanism 8, the means for casing the well, the cleaning fluid cleaning system, as well as the control unit 9 and the oil station 10 installed in the lower chamber 3 of the building sa 4. Q

The rock-breaking tool 1 consists of the cutters 11 installed in three rows on the frame 12. The legs of the cutters 11 of the outer row are mounted movably in the radial guides 13 5 of the frame 12, are spring-loaded and connected by cables 14 to a disk 15 having an annular recess 16 The disk 15 is movably mounted on vertical pins x.

17 of the frame 12. On the lower chamber 3 of the housing 4 vertically mounted three hydraulic cylinders 18, the rods of which are provided with fingers 19. located in the annular recess 16 of the disk 15.

In the housing 4, the chamber 7 and the frame 12 of the rock cutting tool 1, there are central through holes 20-22 ,. through which the production column 23 of the spent oil field passes.

The actuator 6 for axial movement of the rock-cutting tool is made in the form of two hydraulic clamps 24 and 25 located coaxially with the central through hole 21 of the housing 4 and covering the production string 23. The hydraulic clamps 24 and 25 are filled in the form of dies moving in the radial direction through the thrust bearing 27 and a tapered yoke 28 with a piston 29 installed in a hydraulic shank 30. Three hydraulic cylinders 31 are fastened to hydraulic clips 24, and three hydraulic cylinders 32 are fastened to hydraulic clips 25. The rods of the hydraulic cylinders 31 and 32 are connected with the upper chamber 7 of the housing 4.

The spacer mechanism 8 (FIG. 2) comprises a sleeve 33- having a slotted connection with the housing 4, three curvilinear levers 34 pivotally connected to the sleeve 33 and with the pads 35, the outer surface of which is extended along a logarithmic spiral. On the sleeve

33 three cylinders 36 are installed to rotate the levers 34, and on the levers

34- three hydraulic cylinders 37 for turning the pads 35.

The means for casing wells are three levers 38, rotatable in a vertical plane, mounted on the lower chamber 3 of the housing 4 and provided with a drive for their rotation — hydraulic cylinders 39, and mechanisms mounted on the pad 40 fixed on the lower chamber 3.

On the platform 40 (FIGS. 3-5) three hydraulic cylinders 41 are mounted, connected through stops 42 to pushers 43, which are movably mounted in radial guides 44. Each pusher 43 has, at its end, a stop 45 movable in a vertical direction with its mechanism (not shown) On the pad 40, moreover, three hydraulic cylinders 46 are installed. The stem of each hydraulic cylinder 46 is hingedly connected to the small arm of the two shoulders lever 47 mounted on the movable support 48, which is mounted on the guide 49. The movable support 48 is connected with guide 49 with a locking clip (not shown). On the MOBILE leg 48, the block 50 is fastened. The large lever arm 47 is connected to the cable 51 slung over the block 50 and fixed on the pusher. 52, mounted with the possibility of movement on the movable support 48.

The cleaning fluid cleaning system contains a slurry pump 53 fixed on the lower chamber 3 of the housing 4 (its actuator 54 is located inside chamber 5) connected by a pipeline (not shown) to a hydro cyclone 55. A hydrocyclone 55 is mounted on a lever 56 rotatable in a horizontal plane. The support of the lever 56 and the drive for its rotation - the hydraulic cylinder 57 is installed on the upper chamber 7 of the housing 4. The hydrocyclone 55 is connected through a receiving tank for purified water (not shown) with a flushing pump 58 mounted on the upper chamber 7. Under the hydrocyclone 55 is suspended cables ring pshamo-collection 59.

 The support 60 is made of prefabricated sections 61. Each section 61 (FIGS. 6-8) consists of three segments 62 and three wedges 63 connected in a tongue and groove type. The wedge 63 is fixed using spring clips 6 "4 installed in segments 62. In the upper part of each wedge 63 there is a T-shaped protrusion, and in the lower part

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the same groove shape, providing the connection of 65 adjacent sections like dovetail. On the inner surface of the wedges 63, on the side of their ends, there are guide vertical protrusions 66, the distance between which is 1/2 - 2/3 of the height of section 61. The smooth section between the guide protrusions 66 serves for contact with the pads 35 of the reactive moment retention mechanism.

In the transport position of section 61, its segments 62 and wedge 63 are shifted to the center.

The operation of the device for drilling large vertical boreholes is carried out as follows.

Previously, a well is dug around the production string 23 of the spent oil field and secured to it

25 61 supports 60. At the drilling site 40, the next section 61 supports 60 are installed in the transport position. When this segments 62 are installed on the pushers 43.

30 between the stops 42 and 45, and the wedge 63 - on the movable supports 48. A device for drilling with cones of an outer row that is displaced towards the center of the rock breaking tool 1 (their

,, offset is described below), is omitted in

40

The well, together with section 61 in the transport position, so that the production string 23 passes through the through holes 21 and 22 of the frame 12 of the rock destructive tool 1 and the body 4, as well as through the hydraulic clamps 24 and 25 of the drive 6 for axial movement of the rock destructive tool. When this clamps 24 and 25

The D5 is close to each other, and the pads 35 and the levers 34 with respect to the position shown in Fig. 2 are rotated clockwise and close to the housing 4. The sleeve 33 is supported on the lower 50th chamber 3 of the housing 4.

The control unit 9 is turned on for automatic operation. The oil station 10 is turned on, and pressure is supplied to the actuator 6 for the axial movement of the piglet and the destructive tool. As a result, the piston 29 of the upper hydraulic clamp 24. displaces the tapered yoke 28, the dies 26 clamp the production string 23, the feed hydraulic cylinders 31 attached to the hydraulic clamp 24 turn on, and through the body 4 the axial force is transferred to the microprocessing tool 1. At this time

Drilling continues to a depth equal to the height of section 61 of the support 60. After that, the drives 5 and 6 of rotation and axial movement of the destructive tool, sludge and front washer Hacocbf 53, 58 and

the lower hydraulic clamp 25 is expanded and moves down the production string 23 under the action of the pressure supplied to the pinhole cavity of the fixed g, the casing of the hydraulic scoters 32 drilled on it is produced, at the same time the well section. At this time, the hydraulic cylinders 36 of the torque holding mechanism, which rotate the arms 34, and the hydraulic cylinders 37, which turn the pads 35 until they are stuck on the support section 61, are sec- ond.

At the same time, the drive 5 of rotation of the rock-cutting tool, the pump 53, the wash pump 20 58 and the drilling process begin.

The pip pump 53 pumps out the washing fluid poured into the well with solid particles of the drilled rock suspended in it and delivers wedges 63 at the ends of the movable hydrocyclone 55 in 25, where the separators 48 pushers 52 sink the fixation of the suspension: solid particles in the transport position is on site 40 under the previously installed in the well section. One-time hydraulic cylinders 39, 41, and 46 are turned on. When the hydraulic cylinder 46 rods move, the two shoulders turn the levers 47 and use cables 51 to move the pushers 52, which move the wedge 63 to the ends of the movable supports 48. Ditch 46 due to the above-mentioned ratio of arm levers 47. When the rock is leftbore, the slime enters the sludge collector 59, and the cleaned flushing fluid passes through the receiving tank to the washing pump 58, which supplies it to the rock breaking tool 1.

The separators and disconnect the mobile supports 48 and their guides 49. As a result, the further increase of the rods of the hydraulic cylinders 46 causes the mobile supports 48 to move in the direction-. 49, with the wedge 63, it is im- possible to stand on movable supports 48. Thus, the design of the mechanism

After executing the hydraulic movement of the wedges 63, the feed is supplied to the bottom 31 of the hydraulic clamp 25 and its dies 26 clamp the production string 23. The pressure in the hydroshield is released.

30 of the upper hydraulic clamp 24 and it is cleared by the segments 62 by pushing the production string 23 to the 43, driven by the hydraulic cylinders 41. Pressure is supplied to the piston cavity of the hydraulic cylinders 32, and the axial force continues to be transmitted to

its placement in a confined space smaller than the stroke of the pusher. 52.

Simultaneously with 63 wedges, when segments 62 approach the borehole walls, the movable stops 45 of the plunger, vanzts. At this moment, the 63 wedge-laying and tearing-down tool 1. It will engage with the segments 62 and with the time of the upper hydraulic clamping 24 interchanges of the highest section (Fig. 7). Screw down under the action of pressure supplied to the thrust cavity. The subsequent movement of the segments 62 to full adherence to the walls of the well is carried out when they are wedged. Next, the cycle of hydrolysis wedges mi 63 under the action of levers 24 and 25 and hydraulic cylinders 31 and 32 gov 38 driven by hydraulic cylinders

hydraulic cylinders replenished on it 31

repeats. Thus, the rock cutting tool 1 is moved by the interception method. The interception method also allows initial fixation on the production column 23 of the lower hydraulic clamp 25 and downward movement along the column of the expanded upper hydraulic clamp 24 during

operation of the hydraulic cylinders 32 of the lower hydraulic clamp 25.

Drilling continues to a depth equal to the height of section 61 of the support 60. After that, the drives 5 and 6 of rotation and axial movement of the destructive tool, sludge and front washer Hacocbf 53, 58 and

casing is drilled in the well section. At this time,

casing is drilled in the well section. At this time,

nii wedges 63 at the ends of the movable supports 48 pushers 52 embedded fiks

Qi 61 in the transport position is on the platform 40 under the section previously installed in the well. The hydraulic cylinders 39, 41 and 46 are turned on at the same time. When the hydraulic cylinder 46 rods move, the two shoulders turn the levers 47 and use cables 51 to move the pushers 52, which shift the wedge 63 to the ends of the movable supports 48. 46 because of the above-mentioned aspect ratio of the arms of the arms 47. When positioned, the wedges 63 provide

Segments 62 are pulled using a pusher 43 driven by hydraulic cylinders 41.

its placement in a confined space smaller than the stroke of the pusher. 52.

Simultaneously, the segments 62 move with the wedges 63 by means of a pusher 43 driven by hydraulic cylinders 41.

With the approach of the segments 62 to the walls of the borehole, the movable stops 45 utapli-, vanzts. At this point, wedge 63 will go.

After pushing the sections apart, 61 to the full cross section, the pushers 52 and 43 are moved in the opposite direction by means of the hydraulic cylinders 46 and 41. In the mechanism of holding the reactive torque, hydraulic cylinders. 37 turn in the opposite direction pads 35, their output from soy

9 . 150

This is not a spell, and the hydraulic cylinders 36 turn in the opposite direction (fold) the levers 34. The mechanism 8 under its own weight is lowered onto the lower chamber 3 of the housing.

With the help of the axial drive actuator 6, the drilling device rises to the surface of the earth (previously, the collector 59 rises to the surface). At the same time, after the rock cutting tool 1 comes off the bottom, pressure is applied to the vertical hydraulic cylinders 18, which with the help of fingers 19 located in the annular recess 16 raise the pin 1 of the disc 1 15 on the pin. This causes movement of the cables fixed on it 14 and movement 11 of the outer row to the center of the rock-destructive tool 1. The reduction of its diameter ensures unimpeded passage through the sections 61 fixed in the borehole 60 when lifting and then lowering the drilling equipment into the well ...

These operations are also performed to replace a worn rock cutting tool on the surface of the earth. Moreover, it is advisable to make this replacement when removing the drilling device for the purpose of the well casing.

After lifting the device for the drill

neither on the pad 40 install the following section 61 of the lining 60 in the transport position, the orientation of it, as shown in Fig.6. Then, with the aid of the actuator 6, the axial movement of the rock-cutting tool is lowered into the well a drilling device with the section in the transport position. When section 61 is lowered, the displacement of its segments 62 is prevented by section guides 66 of sections previously installed in the well. .

When the downhole drilling device is lowered, after the passage of the rock cutting tool 1 of the last section 61 installed in the borehole, the cutters 11 of the outer row are moved back to their original position. After the installation of the drilling device on the face, the drive 6 is turned off by the axial movement of the rock cutting tool, a mechanism for holding the reactive moment is included, the pads 35 of which are stuck on a smooth surface

between the guiding protrusions 66 of the wedge 63 of the last section 61 installed in the borehole, the sludge collector 59 is lowered into the working position, the rotational drive 5 of the rock-breaking tool and its axial movement is included. At the same time, the slurry pump 53 and the flushing pump 58 are turned on. After drilling to a depth equal to the height of section 61, lining 60, the casing of the drilled section of the well is made, the drilling rig-.

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The operation rises to the surface after the next section 61, and then the drilling tool 1 together with it is lowered into the well and the drilling process is resumed.

When filling the sludge collector 59, the hydrocyclone 55 rotates with the help of the hydraulic cylinder 57 so that the sludge collector 59 can be lifted unhindered to the surface where it is unloaded. Then, the sludge collector 59 is lowered into the working position, and the hydraulic cylinder 57 rotates the hydrocyclone 55 to the initial position. The slurry collector 59 is transported using the lifting gear. equipment installed on the surface. It cannot be used to transport the drilling device during the casing of the well and the replacement of the worn out rock-breaking tool. The level of flushing fluid in the well is controlled and, if necessary, it is added automatically.

After the drilling is completed, the operation column 23 is removed from the well.

Invention Formula

1. A device for drilling large vertical boreholes and erecting a permanent support, including a rock destructive tool, a drive for its rotation, housed in a housing with a central through hole, in which a guide string is placed, an axial displacement drive, a section support, and a spreading mechanism characterized by the fact that, in order to increase the reliability of the device operation and to automate the processes of fastening, the rock-destructive tool is made multi-tool, .kaz; the roller of the cone is spring-loaded and installed and with the possibility of radial movement through the mechanism of movement, and the expansion mechanism is installed with the ability to interact with the lining sections, the lining sections are made of alternating segments and wedges, and the device is equipped with a platform installed above the rock-breaking tool, and on which lining sections are placed, driven levers installed with the possibility of rotation in the vertical plane and interacting with the lining sections, and the mechanisms of wedges and segments separation.

2. Device PO.P.1, different from the fact that the reA-A mechanism

The shafts of each sharoshka are made of a hydraulic cylinder vertically mounted on the platform, from a disk with an annular recess, from a vertical pin connected to the hydraulic cylinder rod and placed in an annular notch to move the disk along the pin, and from cable strings connected to the disk and through blocks paws spring loaded roller cutter. .

3. The device according to Claims 1 and 2, t - is characterized in that each mechanism of the extension of the support sections is made in the form of a pusher, radial guides in which it is mounted for movement, and movable in the vertical direction, installed at its end.

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Claims (3)

Claim 1. A device for drilling vertical wells of large diameter and the construction of a permanent lining, including rock cutting tool, its rotation drive, housed in a housing with a central through hole, in which a guide column, an axial movement drive, a section support and a spacer mechanism, characterized in that, in order to increase the reliability of the device and automate the fastening processes, the rock cutting tool is made multi-ball, each of the cone legs is spring-loaded and installed with the possibility of radial movement by means of a movement mechanism, and the spacer mechanism is installed with the possibility of interaction with the support sections, while the support sections are made of alternating segments and wedges, and the device is equipped with a platform; mounted above the rock cutting tool, and on which the lining sections are located, with drive levers mounted to rotate in a vertical plane and interacting with the lining sections 15, and the mechanisms for sliding the wedges and segments. " 2. The device according to claim 1, characterized in that the movement mechanism of each cone is made of a hydraulic cylinder vertically mounted on the platform, of a disk with an annular groove, of a vertical pin connected to the hydraulic cylinder rod and placed in the annular groove with the possibility of moving the disk along the pin, and from a cable rod connected to the disk and through blocks with paws of a spring-loaded cone. 3. The device according to paragraphs 1 and 2, which can be relieved by the fact that each mechanism for extending the lining sections is made in the form of a pusher, radial guides in which it is installed with the possibility of movement, and movable in the vertical direction = ora mounted on its end. Fie.Z in ~ B < d 51 Ub UD ~ D Figure 1 Compiled by L. Cherepenkina Editor L. Zaitseva Tehred A. Kravchuk Corrector A. Obruchar -----------. ------------------------------------ ____ Order 5778/28 Circulation 449 Subscription VNIIIPI State 113035, Committee for Inventions and Discoveries under the USSR SCST Moscow, Zh-35, Raushskaya nab., D. 4/5 Production and Publishing Plant Patent, Uzhhorod, st. Gagarina, 101