SU1221332A1 - Arrangement for running instruments into well - Google Patents

Description

The invention relates to a technique for extracting oil and gas, in particular to the investigation of oil and gas wells under pressure with instruments and tools that are run down on a cable or cable.

The aim of the invention is to increase the speed by eliminating the time of removal of heavy instruments on the weight. .

Figure 1 shows the device, a general view, in figure 2, node I in figure 1, in figure 3, section AA is shown in figure 2.

The device for lowering the cable or instrument cable into the well consists of a lubricator 1 (FIG. 1) of the load-lifting mechanism 2 and a suspension 3.

Lubricator 1 consists of a transition flange 4, the receiving section 5 (figures 1 and 2) and the seal 6.

The load-lifting mechanism 2 (Fig. IX consists of the th pillar 7 forces, made of two pivotally connected upper 8 (figure 1 and 2) and the lower 9 parts and the lock 10. On the lower part 9 of the power rack 7 a bracket is installed 11 with a roller 12. On the upper part 8 of the power rack 7, the support 13 and the roller 14 are mounted with the possibility of elastic axial movement.

Suspension 3 (Fig. 1) includes a double-arm lever 15, a power bracket 16, a ton of 17 and a pull roller 18. The power bracket 16 is mounted on the casing 19, and the lubricator 1 is mounted on the fountain fixture 20 with a preventer 21. Fountain fittings 20 is equipped with a working platform 22 with a fence 23. Through logs 14 and 18 passes logging geophysical load-carrying cable 24 (figures 1 and 2).

On the upper part 8 of the power post 7, a support 13 is installed, consisting of a bracket 25 (FIGS. 2 and 3) and a fork 26. pivotally connected to it. The bearing 13 moves along the neck 27 (FIG. 2), on which is also mounted on the spring 28, Below the neck 27 on the thread 29, on which the nut 30 is installed.

On the plug 26, an eyelet 31 and an actuator in the form of a flexible filament 32 (FIG. 2), slung over the block 33, fixed on the body 34 of the roller 14

The seal 6 is equipped with a spherical head 35 with a neck 36.

A support 37 is mounted on the housing 34, in which a spherical socket 38 is made. The roller is connected to the housing 34 by an axis 39. The bolts 40 mounted on the housing 34 prevent the channel 24 from sliding off the roller 14.

Fork 26 by axis 41 (FIG. 3) is connected to bracket 25. On axis 41, springs 42 are located, which set fork 26 to its original horizontal position. The axis 41 is kept from falling out by a washer 43 with a shshn-5 volume 44. In the plug 26 a spherical socket 45 is made into which the spherical head 35 of the lubricator is installed at the end of the lubricator 1.

A device for lowering on cable 0 or the instrument cable into the well is mounted and operates as follows.

A power bracket 16 5 is mounted on the casing 19 (Fig. 1) with a pull roller 18. Then, a double-arm lever 15 is pivotally mounted on the transition flange 4. The right lever arm 15 is connected by means of the pull 17 with a power bracket 0 16, and on the left shoulder is placed the lower element 9 of the power rack 7. On the bottom element 9 of the power rack 7 is mounted a bracket 11 with a roller 12 for mounting the power rack 7 with a lubricator 1. Then on the fence 23 of the working platform 22, which is located on the well, manually top rises element 8 of the power post 7 and is hingedly connected to the lower element 9. Since the length of the upper element 8 reaches 3.5 m, it is quite difficult to manually mount it.

I

The geophysical load carrying cable 24 from a logging hoist (not shown) is passed through the pull roller 18, the mounting roller 12, the upper ROLLER 14 and is mounted on the surface of the upper part 9 of the power post 7. After that, the logging hoist starts to wind the cable 24 on the winch (not shown), the tension of the geophysical cable 24 occurs and, under the effect of the moment 5 that has arisen, the upper part 8 of the power post rises to a vertical position until it contacts the roller 12. In this case, the lock 10 fixes

the upper part 8 is upright. The end of the geophysical cable 24, previously fixed on the surface of the upper part 8, is released and moves down to the ground, where the lubricator 1 is located. The end of the geophysical cable 24 is passed through the seal 6 and the receiving section 5 (Fig. 1 and 2); (not shown). The logging cable 24 is wound onto a hoist of a logging elevator (not shown) while the lubricator 1 (fig. O rises to the vertical position. Then manually, tension the cable, lift the lubricator 1 up to the stop of its spherical head 35 (figure 2) in the spherical socket 38, embodied in the stop 37 of the housing 34. The lubricator 1, moving upward, with its spherical head 35 turns on the axis 41 (FIGS. 2 and 3) a fork 26, cocking the torsion springs 42. After the passage of the head 35 above the fork 26 last under the action of the springs 41 is set horizontal position, while covering the seal 6 by its neck 36. Then the lubricator 1 is lowered until the contact of its spherical head 35 with the spherical nest 45 of the plug 26, while the lubricator 1 (figure 1) hangs on the lifting mechanism 2 above the wellhead 20 wellhead .

On the upper part 8 of the power post 7 there is a support 13 with a bracket 25 and a fork 26 (figure 2), a spring 28 and a nut 30. The nut 30 adjusts the force of the spring 28 so that it corresponds to the total weight of the lubricator 1 with the device and the movable support 13. By adjusting the spring 28 to the required force, it is ensured that without great effort it was possible to raise or lower the lubricator 1 above the Christmas tree 20.

After the lubricator 1 is installed in a vertical position (FIG. 1), its receiving section 5 is connected to the support flange 4. The lubricator 1 is ready to lower the instruments into the well. At the fountain valve 20, the preventer 21 is opened, and the device is lowered into the well.

After performing studies in the well, the instrument is lifted and injected

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it in the receiving section 5, then close the preventer 21.

To replace the instrument, the receiving section 5 is disconnected from the support flange 4 and under the action of the force of the spring 28 (Fig. 2) the support 13 (Fig. 1), and with it the lubricator 1 is raised above the wellhead. In this position, the spherical head 35

10 (FIGS. 2 and 3) is located in the spherical socket 45 of the plug 26, which allows the lubricator 1 to be deflected and the devices to be replaced with a weight. In the case of the use of overall

15 and heavy instruments, as well as the replacement of sealing elements (not shown) of the seal 6 (Fig. 1 and 2) or the wire after the tubing pipes have been patterned on the gyro-logging cable during subsequent well testing, it becomes necessary to lower the lubricator 1 on the bridge (FIG. .1) without dismantling the load-lifting device 2. To do this, lift the lubricator 1 until its spherical head 35 is in contact with the spherical socket 38 and pull manually the fork 26, made in the form of a flexible thread 32, with one end connected through the eye 31 to the plug 26, and oppose the end located along the power rack 7 in the area of the working area 22.

On the power rack 7, bending thread

thrown over block 33. Under the action of a manually developed effort 26 (figures 2 and 3), overcoming

the force of the springs 42 rotates on axis 41 to a vertical position.

After the plug 26 is placed in a vertical position, the geophysical cable 24 (Fig. 1) is slowly unwound from the logging hoist, while the lubricator 1 is lowered and placed on the platforms (not shown) or the work platform 22. The end of the flexible string 32 (Fig. 2) is released and vshtka 26 under the action

Przgzhin 42 (Fig.2 and 3) is installed in a horizontal position. The bolts 40 mounted on the housing 34 of the roller 14 prevent the geophysical cable 24 from falling out of it (Fig. 1). The washer 43 (FIG. 3) and the pin 44 prevent the axis 41 from falling out of the holes of the bracket 25.

On the walkways (not shown in Fig.) Or on the working platform 22 (Fig. 1) on which the lubricator is placed, the necessary work is done: replacing the compactor, replacing the geophysical cable instead of the wire, replacing the overall and heavy instruments, and then begins to put the geophysical cable 24 (figure 1) on a winch (not shown) and install the lubricator 1 in a vertical position. The cycle is repeated.

Removing the lubricator 1 from the Christmas tree is performed in reverse order.

The application of the invention makes it possible: to put a lubricator on a bridge or a working platform to replace heavy instruments, seals, wires and geophysical carrying cable without power dismantling.

To eliminate the need to use additional lifting devices for placing bast 5 bractors on the walkways and installing the walkway from the walkways in a vertical position, center the lubricator relative. but the power rack, which reduces the wear of the seal to reduce the number of components of the lifting mechanism; reduce the accuracy of manufacture of parts of the lifting mechanism; reduce the weight of the spring-loaded part of the lifting mechanism; regulate the force of the spring weighing the lubricator, depending on the weight of its receiving section and the instruments used. These advantages of the device for running a cable or instrument cable into the well improve performance and simplify the design.

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Claims (1)

DEVICE FOR DRAWING DEVICES INTO A WELL containing a lubricator with a seal and a receiving section, a suspension and a load-lifting mechanism mounted on it, including a power rack, roller and support, characterized in that, in order to increase speed by eliminating the time of dismantling heavy devices on weight, it is equipped with a spherical head with a neck, and the support is made in the form of mounted on a power rack with the possibility of elastic axial movement of the bracket and a spring-loaded fork with articulated spring and a spherical head with a neck .connected to the lubricator seal and located with the possibility of interaction with the plug. SU „., 1221332 f 12