RU6019U1 - DEVICE FOR MELTING HYDRATE-PARAFFIN CONNECTIONS - Google Patents

Abstract

A device for thawing hydrate-paraffin plugs in tubing of oil and gas wells, comprising a tubular body with electric heating elements installed therein and filled with heat-conducting material, characterized in that the body of the device is filled with heat-conducting material in its entirety, while inside the body passage holes with an exit in the lower end part and on the sides in the upper part of the housing, and electric heating elements are interconnected in the lower end of the housing and are made with a compacted spiral in the area of their connection.

Description

for melting hydrate-paraffin plugs

DEVICE

The invention relates to the field of oil production, and more specifically to a technique for eliminating hydrate-paraffin plugs in tubing of oil and gas wells.

Various techniques are known for thawing hydrate-paraffin plugs: devices in the form of hoses and pipes lowered into the well through which hot water or napj devices are lowered on a cable, inside which various thermal heaters are located; devices delivering various powders or liquids directly to the cork for exposure to the cork with chemical elements (see, for example, AS N 1816849, Khoroshilov VA, Malyshev AG, Prevention and elimination of hydrated deposits during oil production. Moscow, VNIIOENG, 1986. Oil industry overview. Oilfield business series. Issue 15/122).

Known technology has drawbacks, among which there is great complexity, high labor costs for the implementation of thawing and low efficiency.

Improving the efficiency and eliminating a number of other disadvantages of the known devices for thawing hydrate-paraffin plugs is achieved in the device TAKED as a prototype (see NO, patent N 2006571, IPC ЕВВ 36/04, 1994, 4 l.). A device for thawing hydrate-paraffin plugs in tubing of oil and gas wells contains a tubular body with electric heating elements installed in it, which is filled with heat-conducting material.

However, the thawing efficiency when using the device adopted as a prototype can be significantly increased.

The technical result of the proposed invention is to increase the thawing efficiency of hydrate-paraffin plugs.

The technical result is achieved in that in a device for thawing hydrate-paraffin plugs in tubing of oil and gas wells, comprising a tubular body with electric heating elements installed therein and filled with heat-conducting material, the device body is filled with heat-conducting material in its entirety, while through holes are made inside the housing with an exit in the lower end part and on the sides in the upper part of the housing, and electric heating elements interconnected in the lower end part of the housing and made with a compacted spiral in the area of their connection.

A positive effect in the proposed device is achieved due to the following.

The heat-conducting material provides effective heat removal from the heater type TEN to the body (its end and side sides).

The through holes inside the device provide, firstly, an increase in the heat transfer area, and secondly, a more intensive removal of heated liquid and the supply of new portions of cold liquid for heating, and thirdly, prevention of overheating of electric heating elements inside the device.

The connection of the electric heating elements in the lower end part of the device provides additional heating area and additional heat at the end of the device.

IPC E21B 37/00 The proposed invention of the wife: in Fig. 1, the device in Fig. 2, a top view in Fig. 3, the device in Fig. 4, a top view

The device contains:

1- tubular body

2- electric heating elements,

3- thermally conductive material,

4-pass holes with access to the lower end part and to the side walls of the housing,

5- spiral seal at the junction of electric heating elements.

The device operates as follows. After lowering the device into the tubing and turning on the electric heaters 2, the housing 1 with the lower end part starts to heat the hydrate-paraffin plug. The heat-conducting material 3 filling the housing 1 facilitates the transfer of heat from the electric heating elements 2 to the housing 1 (its end and side sides). The molten components of the hydrate-paraffin plug leave through the through holes 4. The spiral seal at the junction of the electric heating elements 5 increases the amount of heat in the lower part of the device. Thawing is effective. 1.5-2 times.

msH is shown in the drawing, where isobras is one through hole; devices with one through hole; with two through holes; devices with two through holes. Performance Increased Applicant: Chief Engineer

M.P. Pasechnik

Claims (1)

A device for thawing hydrate-paraffin plugs in tubing of oil and gas wells, comprising a tubular body with electric heating elements installed therein and filled with heat-conducting material, characterized in that the body of the device is filled with heat-conducting material in its entirety, while inside the body passage holes with an exit in the lower end part and on the sides in the upper part of the housing, and electric heating elements are interconnected in the lower end of the housing and are made with a compacted spiral in the area of their connection.