RU2803719C1 - Technological block for pipes steaming - Google Patents

Abstract

FIELD: oil and gas industry.

SUBSTANCE: device for cleaning the outer and the inner surfaces of downhole cylindrical products from asphalt, resin, paraffin deposits (ARPD), in particular, sucker rods, tubing. A technological unit for steaming pipes, containing frame base 1 with steam treatment chamber 2 placed on it, tray 3 located underneath it for collecting liquid paraffins, and in the front part steam treatment chamber 2 is equipped with loading hatch 9, and in the rear part – drain neck 8, which is located above tray 3 for collecting liquid paraffins. Steam treatment chamber 2 is equipped with steam supply pipes, a thermometer and a breathing valve, while steam treatment chamber 2 has a slope towards tray 3 for collecting liquid paraffins, designed to ensure drainage of liquid paraffins molten by steam from the pipe cavity into drain neck 8, and then into tray 3 for collecting liquid paraffins.

EFFECT: creation of a faster and more convenient to operate technological unit for steaming pipes due to possibility of simultaneous processing of several pipes.

5 cl, 1 dwg

Description

The invention relates to devices for cleaning the outer and inner surfaces of well cylindrical products from asphalt, resin, paraffin deposits (ARPD), in particular, pump rods, tubing, and in particular to technological units for steaming pipes, and can be used in oil and gas and the chemical industry during the construction, repair of wells, as well as during operations to treat the bottom-hole zone of the well.

During operation and technological operations, paraffin and resinous deposits are deposited on the inner walls of pipes, which narrow the flow area of the pipe and thereby reduce the throughput of the pipe. The most common way to restore pipes in this case is to treat the pipes with high temperature or steam.

Currently, mobile steam generator units are used to process pipes with steam in fields and each pipe is processed individually.

The closest thing to the claimed invention is the technological unit for steaming pipes described in RF patent No. 209750 for a utility model. This technological unit for steaming pipes was chosen as a prototype of the claimed invention.

The disadvantage of the technological unit for steaming pipes of the prototype is the long time and complexity of steaming, due to the loading and processing of each pipe individually and the inability to simultaneously process several pipes.

The technical result of the invention is the creation of a faster and more convenient to operate technological unit for steaming pipes, due to the possibility of simultaneous processing of several pipes.

The technical result was achieved by creating a technological unit for steaming pipes, containing a frame base with a steam treatment chamber placed on it, a tray located underneath it for collecting liquid paraffins, and in the front part the steam treatment chamber is equipped with a loading hatch, and in the rear part there is a drain neck, which located above the tray for collecting liquid paraffins, the steam treatment chamber is equipped with steam supply pipes, a thermometer and a breathing valve, while the steam treatment chamber has an inclination towards the tray for collecting liquid paraffins, designed to ensure the flow of molten steam liquid paraffins from the cavity of the pipes into drain neck, and then into a tray for collecting liquid paraffins.

In a preferred embodiment of the process unit, on a frame base near the front of the steam treatment chamber there is a service platform configured to accommodate service personnel and a jib crane configured to lift and load pipes into the steam treatment chamber.

In a preferred embodiment of the technological unit, the frame base has runners for transportation.

In the preferred embodiment of the technological unit, the steam treatment chamber has a layer of insulation along its entire contour.

In a preferred embodiment of the process unit, a frame with pipe supports is installed inside the steam processing chamber.

For a better understanding of the claimed invention, a detailed description of it with corresponding graphic materials is provided below.

Fig. 1. General view of the technological unit for steaming pipes, made according to the invention.

Let us consider in more detail the implementation of the technological block for steaming pipes.

The technological unit for steaming pipes consists of a frame base 1 with a steam treatment chamber 2, a tray 3 for collecting liquid paraffins, a console crane 4, and a service platform 5 placed on it.

The frame base 1 has skids 6 for transporting the technological block by towing within the field.

The steam treatment chamber 2 in the front part is equipped with a loading hatch 9, and in the lower part there is a drain neck 8. Also, the steam treatment chamber 2 along the entire contour has a layer of insulation that allows you to maintain the temperature inside chamber 2 at a given level. The use of insulation on chamber 2 makes it possible to reduce heat loss to the environment, thereby reducing the steam consumption required for processing the entire volume and increasing the efficiency of the processing process. To control the temperature, a thermometer is installed on the steam processing chamber 2, and a breathing valve is installed on the steam processing chamber 2 to protect against excess pressure.

For laying pipes inside the steam treatment chamber 2, a frame with cradle 7 for pipes is installed.

The steam treatment chamber 2 is inclined towards the tray 3 for collecting liquid paraffins, to ensure the flow of molten paraffins into the drain neck 8, and then into the tray 3 for collecting liquid paraffins.

To steam treat a batch of pipes, they are first loaded into steam treatment chamber 2. To do this, with the help of maintenance personnel, open the hatch 9 and from the service platform 5 using a jib crane 4, pipes are fed one by one to the pipe supports 7. After the steam treatment chamber 2 is fully loaded with pipes, the hatch 9 is closed and steam from the mobile steam generator unit is pumped through the steam supply pipes into the lower part of the steam treatment chamber 2.

The steam distribution system inside the steam treatment chamber 2, made in the form of a comb of loaded pipes, evenly distributes steam throughout all pipes, both inside the pipe body and on the outside between the pipes. The temperature inside the steam treatment chamber 2 is controlled using a thermometer, and the time for establishing the required temperature and the calculated holding time are recorded. Paraffins and resinous deposits under the influence of the high temperature of the steam turn into a liquid state and, under the influence of gravity due to the slope of the pipes, flow down the inner surface of the pipes and the inner surface of the drain neck 8 into the tray 3 for collecting liquid paraffins.

After the end of the calculated holding time, the steam supply is stopped, the steam inside the chamber 2 is partially discharged through the breathing valve and then the loading hatch 9 is opened and the pipes are waited for complete cooling, and then the pipes are unloaded from the steam processing chamber 2.

Liquid paraffins from tray 3 are pumped out using mobile vacuum units or pump pumps.

The claimed invention makes it possible to treat a batch of pipes with steam at once, rather than each pipe one by one, while reducing the time for dewaxing the pipes.

Although the embodiment of the claimed invention described above has been presented for the purpose of illustrating the claimed invention, it is clear to those skilled in the art that various modifications, additions and substitutions are possible without departing from the scope and meaning of the claimed invention as disclosed in the accompanying claims.

Claims (5)

1. Technological unit for steaming pipes, containing a frame base 1 with a steam treatment chamber 2 placed on it, a tray 3 located underneath it for collecting liquid paraffins, and in the front part the steam treatment chamber 2 is equipped with a loading hatch 9, and in the rear part there is a drain neck 8 , which is located above the tray 3 for collecting liquid paraffins, steam supply pipes, a thermometer and a breathing valve are installed on the steam treatment chamber 2, while the steam treatment chamber 2 has an inclination towards the tray 3 for collecting liquid paraffins, designed to allow the flow of molten steam liquid paraffins from the pipe cavity into the drain neck 8, and then into the tray 3 for collecting liquid paraffins. 2. The technological unit according to claim 1, characterized in that on the frame base 1 near the front of the steam treatment chamber 2 there is a service platform 5, designed to accommodate service personnel and a jib crane 4, configured to lift and load pipes into chamber 2 steam treatment. 3. Technological unit according to claim 1, characterized in that the frame base 1 has runners 6 for transportation. 4. Technological unit according to claim 1, characterized in that the steam treatment chamber 2 has a layer of insulation along its entire contour. 5. Technological unit according to claim 1, characterized in that a frame with supports 7 for pipes is installed inside the steam processing chamber 2.