SU629325A1 - Device for cleaning pipes from paraffin deposits - Google Patents

Description

one

The invention relates to oil production and can be used to clean the surfaces of pipes in wells.

A device for cleaning the surface of pipes from paraffin deposits in wells is known, consisting of a scraper and a scraper control mechanism.

m

A disadvantage of this device is the low reliability due to the deformation of the parts of the crawler when it strikes shock absorbers.

A device for cleaning pipes from paraffin deposits includes a housing, elastic gaps and a mechanism for inserting a ball-shaped inner space of structures to be cleaned.

2

The aim of the invention is to provide automatic, with a predetermined periodicity, the introduction of balls in a borehole into a pipe string.

This is achieved by heme. With a paraffin cleaning device for tubes, including a body, elastic balls and a mechanism for inserting balls into the interior of the space-cleaned structures, it is equipped with a separating disk with a ball cage, which is connected to gears with

drive l from a pulsating fluid flow.

The drawing shows the proposed device., Aerial view.

The device for cleaning pipes from paraffin deposits contains a body 1, divided into two chambers with diaphragm 2, a ball hopper 3, a distribution disk 4 with a ball cage 5, a pulsation sensor 6 for fluid flow, a crank 7, a crank 8 with a pawl 9 and a gear mechanism consisting of ratchet wheels 10 and 11, a worm gear 12, a screw worm 13, gear 14 and a gear wheel 15 located on the same shaft with the distribution disk 4,

The device is placed in the well in front of the wax deposition zone.

The device works as follows.

Claims (2)

The fluid flow from the stepper pump acts on the pulsation sensor 6 of the fluid flow, which turns the crank 8 through the connecting rod 7. The latter raises the pawl 9, which turns the ratchet 10o by one step. Thus, the ratchet wheel 10 turns by one step each time the pump rotates. Through the number of pump rotations corresponding to the reduction ratio of the gear mechanism, gear wheel 15 will turn one distribution disc 4 one step and one of the balls will enter the inner space of the pipe string to be cleaned. By changing the reduction factor of the gear mechanism, it is possible to change the frequency of insertion of balls into the pipe string. The ball, moving along the pipe string under the influence of the flow of the pumped liquid, removes paraffin deposits from the inner surface of the pipes. The use of this device makes it possible to clean paraffin deposits of small diameter pipes (for example, hollow strings columns) with small well flow rates, which makes it possible to operate such wells with tubeless pumps. Apparatus of the Invention A device for cleaning pipes of paraffin deposits, including a body, elastic balls and a mechanism for inserting balls into the interior of the structures to be cleaned, which is necessary in order to provide automatic, with a predetermined periodicity, balls into the well string It is equipped with a distributor disc with a ball cage, which is connected to the gearbox and is driven by a pulsator of a fluid flow. Sources of information taken into account during the examination: 1. Fighting paraffin deposits, ed. A.G. Babal on, M., 1965, p. 120 2. A device for cleaning pipelines from paraffin deposits. Oil Industry, 1965, 2, p. 35-37.