RU59132U1 - DEVICE FOR CLEANING PUMP RODS ON A WELL - Google Patents

Abstract

The utility model relates to the oil and gas industry, is designed to clean long products and can be used to clean pump rods from deposits and dirt directly at oilfield facilities, namely when they are lifted from oil wells. The utility model can be used in all sectors of the economy, where it is necessary to clean cylindrical surfaces with translational motion, both horizontal and vertical. The technical task of the utility model is to protect the environment by removing and disposing of cleaning waste, increasing the efficiency of cleaning sucker rods in the well with the combination of mechanical and hydraulic methods for cleaning sucker rods, both smooth and scrapers, as well as compensating for radial vibrations during the lifting of sucker rods and thereby increase their service life. The essence of this utility model is that the sucker rods are cleaned mechanically and hydraulically directly at the well with steam-water mixture flows directed towards each other, and the cleaning waste is removed horizontally through the collection header. New is that for even distribution and stabilization of the steam-water mixture flows, two steaming chambers (upper and lower) and a perforated stabilizer are installed in the device for cleaning pump rods. Also new is the fact that in order to regulate the process of lifting the sucker rods, reduce their friction and wear and compensate for radial movement during lifting, a moving (floating) stuffing box is provided in the cleaning device.

A device for cleaning sucker rods at the well is installed at the mouth and contains a housing with two steaming chambers (upper and lower), a mixer with steam pipes, a perforated stabilizer, a movable stuffing box and a collector for cleaning waste collection. This device is compact, since steaming chambers, a perforated stabilizer and a collector for cleaning waste are installed in a single case, it is technologically, quickly mounted and dismantled at oil production facilities. The use of a device for cleaning sucker rods at a well allows to increase the productivity and quality of their cleaning regardless of the degree of contamination, to avoid friction and wear of sucker rods when lifting from a well, to provide visual control, apply a continuous cycle of cleaning sucker rods and closed water circulation, and also utilize the resulting waste treatment. The operation of the device for cleaning sucker rods can improve the working conditions of staff with minimal labor costs and reduce the time of repair work at the well, as well as reduce transportation costs for transportation of sucker rods to the pipe base for their subsequent cleaning. Using the proposed device eliminates oil spills and losses when lifting the sucker rods from the well, prevents the clogging of the wellhead well equipment, working area and the area around the well, and, thus, the proposed utility model eliminates pollution of the surrounding area of the well during repair work, improves the environmental situation at well and significantly improve the culture of staff. Fulfillment of environmental protection conditions includes the use of water and steam as a working agent, the possibility of collecting and disposing of industrial waste at the place of their generation and reducing the volume of generated waste.

Description

The utility model relates to the oil and gas industry, is designed to clean long products and can be used to clean pump rods from deposits and dirt directly at oilfield facilities, namely when they are lifted from oil wells. The utility model can be used in all sectors of the economy, where it is necessary to clean cylindrical surfaces with translational motion, both horizontal and vertical.

Prerequisites for creating a utility model.

As a result of the imperfection of the currently used cleaning technologies, oil waste is released into the environment. When using solvents and other detergents for cleaning sucker rods, there is a problem of disposal of the washing solution, often the spent mixture of reagent and asphalt-resin-paraffin deposits is poured onto the ground or pumped into the well.

Heavily contaminated sucker rods are cleaned at pipe bases, which also entails additional production costs (loading, transportation, unloading, warehousing, etc.).

With modern production technologies, scrapers are installed on the sucker rods that interfere with the high-quality cleaning of sucker rods by mechanical means, which requires the use of other cleaning methods.

There is a device for cleaning pipes, comprising a housing with a Central hole, where the diameter of the hole of the housing is less than the outer diameter of the cleaning unit, and holes for mounting, the cleaning unit

with elastic elements, while the cleaning unit is made of two halves rigidly connected by bolts, and the elastic elements are made with radial cuts (RF patent No. 2023869, class E 21 V 37/02 "Device for cleaning pipes when lifting from the well"). The disadvantages of the known device are:

- the cleaning products of the tubing drain into the borehole space, thereby polluting the bottom of the well;

- low quality cleaning of heavily soiled long products and products with scrapers;

- insufficient pipe cleaning efficiency, as dry mechanical cleaning method is used.

A device for cleaning sucker rods, protected by RF patent No. 2052072, class E 21 B 33/08, consisting of a housing with a central hole and located in the cavity of the housing cleaning element in the form of elastic diaphragms with radial cuts, and the unit for fixing parts of the housing is made in the form hairpins.

Significant disadvantages inherent in this device:

- rod cleaning products flow into the borehole space, thereby contaminating the well;

- low quality cleaning of heavily soiled pump rods and rods with scrapers;

- insufficient cleaning efficiency of the sucker rods, because a mechanical cleaning method is used;

- low productivity.

Closest to the technical nature of the proposed utility model is a device for cleaning drill pipes, comprising a housing, a cleaner in the form of a set of washers with channels communicating a chamber filled with a neutralizing liquid with the surface of the pipes, and a chamber filled with steam and communicating with the channels also with the surface of the pipes.

The cameras are separated by a partition. (USSR author's certificate No. 641076, class E 21 B 37/00 "Scraper for cleaning drill pipes). The disadvantages of this installation are:

- the radial movement of the pipe string during lifting is not taken into account, as a result of which friction and wear of the pipe occur;

- the device is intended for cleaning drill pipes;

- low productivity and low quality pipe cleaning;

- significant consumption of neutralizing liquid, which contributes to environmental pollution.

The technical task of the utility model is to protect the environment by removing and disposing of cleaning waste, increasing the efficiency of cleaning sucker rods in the well with the combination of mechanical and hydraulic methods for cleaning sucker rods, both smooth and scrapers, as well as compensating for radial vibrations during the lifting of sucker rods and thereby increase their service life.

The essence of this utility model is that the sucker rods are cleaned mechanically and hydraulically directly at the well with steam-water mixture flows directed towards each other, and the cleaning waste is removed horizontally through the collection header.

New is that for even distribution and stabilization of the steam-water mixture flows, two steaming chambers (upper and lower) and a perforated stabilizer are installed in the device for cleaning pump rods.

Also new is the fact that in order to regulate the process of lifting the sucker rods, reduce their friction and wear and compensate for radial movement during lifting, a moving (floating) stuffing box is provided in the cleaning device.

A device for cleaning sucker rods at the well is installed at the mouth and contains a housing with two steaming chambers (upper and lower),

a mixer with steam pipes, a perforated stabilizer, a movable stuffing box and a collector for cleaning waste.

This device is compact, since steaming chambers, a perforated stabilizer and a collector for cleaning waste are installed in a single housing; it is technologically, quickly mounted and dismantled at oil production facilities.

A device for cleaning pump rods in the well is illustrated in the drawing, where:

figure 1 is a General diagram of a device for cleaning pump rods in the well.

A device for cleaning sucker rods in a well contains a housing 1, with two steaming chambers of the lower 2 and upper 3, a mixer 4 with steam pipes 5, a perforated stabilizer 6, a movable (floating) stuffing box 7 and a collection collector for cleaning waste 8.

In more detail, the essence of the claimed utility model is described below.

A device for cleaning sucker rods in a well works as follows:

A device for cleaning sucker rods is mounted above the working bridges at the wellhead on tubing, fixed together with a mechanical key 10. The device takes on the working position after connecting to the steam generator using pipes (not shown in Fig.). The device is ready to go.

The sucker rod 9, contaminated with asphalt-resin-paraffin deposits, rises vertically from the well and enters the body 1 of the cleaning device. During the lifting process, the sucker rod 9 passes through the lower steaming chamber 2, the perforated stabilizer 6 and the upper steaming chamber 3. The technological mode of cleaning the sucker rod 9 (temperature, steam pressure) is consistent with the rate of its rise from the well. Steam-water mixture is supplied from the steam generator through the steam line

into the mixer 4 and further through the steam pipes 5 into the steaming chambers 2 and 3, mounted towards each other. The flows of the steam-water mixture are mixed in a perforated stabilizer 6 and, due to the presence of a perforated body, are stabilized and evenly distributed throughout the entire volume of the sucker rod cleaning device.

Passing the cleaning device with a perforated stabilizer 6, the pump rod 9 is subjected to intense exposure to two working agents: flows of steam-water mixture and hot water, which are directed towards each other and mixed as a result of the presence of a counterflow in the perforated stabilizer 6.

The jets of the steaming chambers 2 and 3 are concentrated on the surface being cleaned, thereby, the device reliably, efficiently and without gaps cleans the entire surface of the pump rod 9.

Due to the combination of mechanical and hydraulic cleaning methods, in which the flow of the mixture is twisted and the impact area is increased, the pump rod 9 is cleaned of dirt and deposits, and the cleaning process is accelerated. Due to the presence of opposed flows of the steam-water mixture, the cleaning waste does not enter the well.

Waste steam and a mixture of paraffin and water are removed horizontally through a purification waste collector 8, then the waste steam is discharged into the atmosphere, and the mixture of paraffin and water is disposed of, as a result of which the purified water is supplied to the consumer for technological needs (injection into the well, returning the purified water to the beginning process, providing a closed cycle of water circulation, etc.).

The use of a device for cleaning sucker rods at the well allows to increase the productivity and quality of their cleaning regardless of the degree of contamination, to avoid friction and wear of sucker rods when lifting from the well, to provide visual control, apply continuous

the cleaning cycle of the sucker rods and the closed circulation of water, and also to utilize the resulting cleaning waste.

The operation of the device for cleaning sucker rods can improve the working conditions of staff with minimal labor costs and reduce the time of repair work at the well, as well as reduce transportation costs for transportation of sucker rods to the pipe base for their subsequent cleaning.

The use of the proposed device eliminates oil spills and losses when lifting the sucker rods from the well, prevents the clogging of the wellhead well equipment, working area and the area around the well, and, thus, the proposed utility model eliminates pollution of the surrounding area of the well during repair work, improves the environmental situation at well and significantly improve the culture of staff.

Fulfillment of environmental protection conditions includes the use of water and steam as a working agent, the possibility of collecting and disposing of industrial waste at the place of their generation and reducing the volume of generated waste.

Claims (1)

A device for cleaning sucker rods at a well, with the possibility of interaction during the cleaning process with long products having progressive movement (both horizontal and vertical) with the possibility of mechanical and hydraulic cleaning and consisting of a housing with steaming chambers, a mixer with steam pipes and an stuffing box node, characterized in that in a single housing installed steaming chambers and a perforated stabilizer with the possibility of uniform distribution and stabilization of steam flows water mixture and a waste collection collector, the device contains two steaming chambers, with the possibility of ensuring the cleaning of the sucker rods by steam-water mixture flows directed towards each other, and the stuffing box is movable, with the ability to compensate for radial movement when lifting the sucker rods and reduce their friction and wear and tear.