RU52076U1 - SWIVEL FOR DRILLING RIG - Google Patents

Abstract

The utility model relates to the field of drilling equipment, in particular to devices for supplying flushing fluid to the bottom of the well, which will increase the service life of the swivel without replacing the bulky barrel when its upper part is worn due to flushing fluid. Without removing the swivel from work, the quick-release seal between the barrel and the outlet pipe is removed, and then a worn sleeve with cuffs is removed from the barrel and replaced with a new sleeve and new cuffs. A quick-release seal is installed in its place and drilling continues. This effect is achieved by quickly replacing the worn sleeve with cuffs, in contrast to the need to remove the swivel, to completely disassemble it, then to fix it by welding and new machining on the machines of the bulky swivel barrel to obtain the original dimensions.

Description

The utility model relates to the field of drilling equipment, mainly to devices for supplying flushing fluid to the well and can be used in systems providing rotation of one part of the pipeline relative to another.

Swivels are used in all drilling rigs and are designed to supply flushing fluid to the well through the barrel of a rotating drill pipe string.

Swivels are known for drilling rigs used in deep well drilling (over 1 km) when flushing fluid enters the well at high pressure. For example, swivels produced by Uralmash, which are taken as a prototype.

In the swivels of the prototypes, the upper part of the barrel is made with a groove with a cuff installed in it, preventing leakage of drilling drilling fluid. The upper edge of the swivel barrel wears out quickly and erodes due to the impact of the drilling fluid passing under high pressure. Drilling fluid is leaking and urgent repair of a bulky part is required, namely, the swivel trunk due to wear of the cuff groove. In the field of fisheries, there arises the problematic task of repairing and replacing the barrel associated with removing the swivel from the rig, completely disassembling the swivel, followed by replacing the barrel with a new or repaired one.

The well-known swivel UV-250, manufactured by Uralmash, the scheme of which is presented in the “Technical Description and Operating Instructions -4066.46.000 TO”.

A general view of the circuit is shown in FIG. 1 of a sketch of a utility model that explains the following.

The casing pos.1 of the swivel with hinges pos.2 is connected to the corkscrew pos.3, through which the swivel is suspended from the tackle system of the drilling rig. The housing has a cover pos. 4, to which is fixedly fixed

branch pipe 5 for flushing fluid. Inside the housing, on the thrust bearing, a barrel of pos. 6 is installed, to which a drill stem of pos. 7 is suspended by a threaded connection. A removable adapter block pos. Is installed between the upper part of the barrel and the nozzle. 10, having for fastening to them nuts pos. 8 and pos. 9.

Figure 2 (callout I from figure 1) shows the upper part of the barrel of the prototype, where pos.6 trunk with a groove made in its upper part with a cuff pos.11 installed in it. The nut pos. 9 holds the removable adapter block pos. 10 and pulls it on the thread to the barrel compressing the cuff pos. 11.

Figure 3 shows the leader I of figure 1 of the upper part of the swivel barrel of the proposed utility model, where item 12 of the proposed barrel with an internal groove in diameter for a removable sleeve item 13. Grooves are made in a removable sleeve in the upper and lower parts of the sleeve with cuffs pos. 11 installed in it. In the proposed utility model, when the upper edge of the sleeve is worn and blurred, without fully disassembling the swivel, the removable adapter block pos.10 is removed, the worn bush pos.13 is removed and replaced with a new one together with cuffs pos.11 prepared beforehand. The effect is achieved by quickly replacing the worn part without removing and disassembling the entire swivel.

Literature

1) G.V. Alekseevsky “Drilling rigs of Uralmashzavod”;

2) Products of the production company "Uralmash";

3) Products of the Volgograd Drilling Equipment Plant production company.

Claims (1)

A swivel comprising a housing, a housing cover with an outlet pipe, a barrel and an adapter block installed between the outlet pipe and the barrel, having a hollow cylinder with sealing elements on the outside, a sealing collar between the adapter block and the barrel, characterized in that the barrel in the upper part is made with a groove on the inner diameter into which a removable sleeve is installed with sealing cuffs installed in it in the upper and lower parts.