RU21803U1 - DEVICE FOR PREVENTING SPRAY OF LIQUID WHEN LIFTING A TUBE COLUMN FROM A WELL - Google Patents

Description

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DEVICE FOR PREVENTING SPRAY OF LIQUID WHEN LIFTING A TUBE COLUMN FROM A WELL

The utility model relates to regional exploration of useful tools, the oil and gas industry, in particular to ground-based downhole equipment, and can be used in drilling and well repair to prevent liquid spatter during tripping operations at the moment of disconnecting another pipe from the drill pipe string. The device can be used in those areas of the economy where necessary

protection against liquid splashing when undocking pipes from the tubing string

in the process of extracting it from the liquid.

Known designers of devices to prevent splashing of the washing solution, including a housing consisting of two marnically bonded halves, a sealing element, a shutter and a drain pipe (see copyright certificate SU No. 968345 E 21 V 41/00, 1980).

 . The disadvantage of these devices is the use of the gap between the pneumatic wedges as a channel for draining the drilling fluid into the circulation system and, as a result, part of the drilling fluid gets onto the floor of the FOVA due to the insufficient throughput of the cavity in the rotary table and the high flow rate of the flushing fluid.

Closest to the proposed device is a device for preventing liquid splashing, including a housing consisting of two articulated halves, sealing cuffs, a shutter and a drain pipe (see SU copyright certificate on application No. 872727 E 21 B 41/00, 1979).

The disadvantage of these devices is that they do not prevent spillage of flushing fluid, both in the process of opening the device and in the process of collecting fluid due to wear of the sealing seal. In addition, the presence of a drainage channel for the collected fluid near the rotary table, which is necessary for its further transportation to the circulation system, is extremely undesirable, as it can lead to injuries of the drilling crew during tripping operations, as well as the presence of a clay solution on a metal flooring a drilling site, which even in a small volume sharply increases the risk of injury to members of the drilling crew. To prevent the overflow of flushing fluid through the upper part of the device, it is necessary to regulate the lifting speed of the unscrewed drill pipe, and, consequently, the speed of tripping depending on the throughput of the drain pipe.

 3d

-2The objective of the utility model is to minimize the loss of flushing fluid during tripping, increasing the reliability of the device by eliminating the sealing elements between the halves of the housing and, as a result, prolonging the overhaul period.

In the device for preventing liquid splashing when lifting pipes from the well, including a housing with two articulated blocks, a drain assembly and drive elements, according to a utility model, the blocks are filled in the form of insulated containers with adjacent adjacent walls in a working position, the height of which is less than the height of the body, moreover, the drainage unit consists of two drainage taps installed on the lower parts of the tanks.

The utility model is illustrated by drawings, where in FIG. 1 shows a general view of the device; figure 2 - section aa in fig. 1; in FIG. 3 is a diagram of an arrangement of a device at a drilling site.

The device includes a housing, consisting of halves 1 and 2 with tightly adjacent adjacent walls, in the working position the height of which is less than the height of the housing, loops 3 pivotally connecting the halves of the housing, shutter 4, handles 5 for supplying the device to the drill string, centering elements 6 for centering devices relative to the drill string. For draining gfomochnyh liquid, the device is equipped with drain valves 7, control knobs 8 and drain holes 9 in the device body. To prevent liquid splashing through the upper part of the device, the use of a sealing element 10 is provided, which seals the gap between the upper part of the body and the drill pipe. Device for Po O iS

scooter Lugs 11 and the cable is hoisted to the top of the oil rig. After filling with liquid, the device is removed from the pipe string and mixed with the liquid; they are connected to the drain funnel 12.

The collected flushing fluid is drained to a drainage box 12 equipped with a screw 13. The drain funnel lid, in turn, is equipped with a handle 14. Liquid is transported from the drain funnel through a drain pipe 15 passing under the Sh1osh drill floor; adki.

The arrangement of the device and the drain funnel at the drilling site is shown in FIG. 3, where the following designations are adopted: 16 - the proposed device with a drain funnel under it; 17 - winch; 18 - remote control; 19 - remote control battery; 20 - battery; 21 - rotary table; 22 - candlestick; 23 - a mechanical key; 24 - swivel; 25 - refill capacity; 26 - walkways; 27 - GIV; 28 - instrument panel.

The device operates as follows.

Before lifting the unscrewed candle, when the keys 23 and the battery 20 are allotted, the device 16, suspended on a cable to the top of the drill tower, is brought to the drill pipe string and fastened with a shutter 4. Then, the unscrewed candle is lifted, the drilling fluid is drained into the device and remains in him. The device is shredded and taken to the drain funnel 12. At this time, the drillpipe installs the unscrewed candle in the candle holder 22. After the device is connected to the drain funnel 12, the washing liquid is drained from both of its halves by turning the knobs of the valves 8. At the same time, the drained washing liquid enters through the drain pipe 15 into the annular space

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wells. There is an increase in backpressure on oil and gas horizons, which helps to prevent oil and gas manifestations.

Thus, the design of this type allows you to contain gfomochny fluid inside the device when it is opened. This avoids the use of sealing cuffs between the halves of the device and spills of liquid at the time of opening of the device.

The technical and economic efficiency of the utility model consists in enhancing the safety of the drilling crew during tripping operations, reducing environmental pollution, reducing the likelihood of oil and gas manifestations, decreasing the life of the device due to the absence of sealing elements between the parts of the device, and reducing the costs associated with the purchase of reagents and disposal waste of the drilling process, which is especially important when drilling offshore.

Claims (1)

A device for preventing liquid splashing when lifting pipes from the well, including a housing with two articulated blocks, a drain assembly and drive elements, characterized in that the blocks are made in the form of insulated containers with adjacent adjacent walls in the working position, the height of which is less than the height of the housing, moreover, the drainage unit consists of two drainage taps installed on the lower parts of the tanks.