RU223084U1 - INDICATOR OF CORROSIVE-ABRASIVE WEAR OF WELLWELL EQUIPMENT - Google Patents

Abstract

The utility model relates to devices for monitoring abrasive wear of wellhead piping equipment, as well as process pipelines, technical devices (flow regulators, etc.). The indicator contains a protective sleeve installed in the pipeline at the well outlet, screwed into a boss welded to the pipeline. A pressure sensor is installed in the protective sleeve, and the wall thickness of the protective sleeve is selected taking into account the rejection wall thickness of the pipeline. The technical solution allows you to take prompt measures to prevent the destruction of downhole, process equipment and technical devices in well clusters, identify areas with the greatest abrasive wear of downhole, process equipment and technical devices in well clusters using non-destructive testing methods, ensure reliable operation and uninterrupted production hydrocarbon raw materials. 1 ill.

Description

The utility model relates to devices for monitoring abrasive wear of wellhead piping equipment, as well as technological lines (pipelines), technical devices (flow regulators, etc.).

A known method for controlling sand removal from a gas well Whereby A rod coated with an adhesive substance is introduced into the gas flow. Keep the rod in the flow for some time and then remove it. The glue-like substance with the grains of sand stuck in it is abundantly washed off with a solvent and the resulting solution is filtered. The presence and amount of sediment is used to judge the fact and intensity of sand removal (RU 2285909 C2, IPC G01N 15/06, E21B 47/00, published 10/20/2006).

The well-known recorder for the removal of solid fractions is RVTF "KADET" VN 1228 (http://binar.ru) - hereinafter RVTF, which represents a system of automation equipment consisting of primary measuring transducers, an electronic unit, an exciter, a collection and communication module, a base station and a configuration module sensors. RVTF is designed to automatically determine the presence of mechanical impurities carried out from a well per unit of time, ensures registration of the number of collisions of individual grains of sand with the pipe wall in a given area for a given time, recalculation of the obtained data into the amount of sand removed per unit of time (g/min) and data transmission over the radio channel at a frequency of 868 MHz.

The disadvantage of the known device is the design complexity of the RVTF system, high labor costs for maintaining the system, low equipment reliability and high cost. Due to its high cost, the RVTF does not allow equipping each well separately and is installed only on the main production line.

All existing devices are aimed at a general sand control process, which does not allow identifying a well operating with sand. To identify a specific well, it is necessary to shut down the wells one by one. This is a lengthy control process, since a certain number of wells are in operation at the same time.

The task to be solved by the utility model is to ensure control of abrasive wear of wellhead equipment, as well as technological lines (pipelines), technical devices (flow regulators, etc.) for prompt response and prevention of emergency situations at wells.

The technical result consists in determining the removal of sand as a result of sand production from a working well.

This problem is solved by the fact that the indicator of corrosion-abrasive wear of wellhead equipment contains a protective sleeve installed in the pipeline at the well outlet, screwed into a boss welded to the pipeline, a pressure sensor is installed in the protective sleeve, and the wall thickness of the protective sleeve is selected taking into account the rejection pipeline wall thickness.

This technical solution allows you to take prompt measures to prevent the destruction of downhole, process equipment and technical devices in cluster well piping, identify places with the greatest abrasive wear of downhole, process equipment and technical devices in cluster well piping using non-destructive testing methods, ensure reliable operation and uninterrupted production of hydrocarbon raw materials.

The drawing shows a diagram of a mounted indicator of corrosion-abrasive wear of wellhead equipment with the following symbols:

1. Boss;

2. Protective sleeve;

3. Pressure sensor;

4. Electrical cable;

5. Threaded connection.

The indicator consists of a boss 1 welded into the pipeline, a protective sleeve 2, a pressure sensor 3 and an electrical cable 4. The protective sleeve 2 and pressure sensor 3 are installed on thread 5.

Indication of corrosion-abrasive wear of wellhead equipment is carried out by installing a boss 1 on a string (in the pipeline) at the exit from the well, into which a protective sleeve 2 is screwed. A pressure sensor 3 is installed in the protective sleeve 2, designed to measure and convert the pressure of the medium. The resulting value is displayed (not shown) or transmitted as an analogue or digital output signal. The readings of the excess pressure sensor 3 installed in the protective sleeve 2 are equal to zero.

The wall thickness of the protective sleeve 2 is selected taking into account the rejection wall thickness of the pipeline. As is known, the rejection thickness of a pipeline wall is considered to be a thickness less than the minimum acceptable for a certain outer diameter of the pipe. As a result of destruction (from abrasive wear) of the wall of the protective sleeve 2, pressure sensor 3 records the value of excess pressure equal to the gas pressure in the pipeline. The readings of pressure sensor 3 are transmitted via cluster telemechanics to the automated workstation of the operator of an integrated gas treatment plant or a gas preliminary treatment plant. When the pressure sensor 3 installed in the protective sleeve 2 exceeds the setpoint set by the operator, a warning alarm is triggered, indicating the destruction of the protective sleeve 2 and the presence of mechanical impurities carried out of the well.

Tests of the proposed device for measuring corrosion rate were carried out at the facilities of the Gazprom Dobycha Noyabrsk LLC enterprise. The results confirmed the ease of installation and maintenance of the device, as well as timely measures taken to prevent the destruction of downhole, process equipment and technical devices in cluster piping of wells.

Claims (1)

An indicator of corrosion-abrasive wear of wellhead equipment, characterized by the fact that it contains a protective sleeve installed in the pipeline at the well exit, screwed into a boss welded to the pipeline, a pressure sensor is installed in the protective sleeve, and the wall thickness of the protective sleeve is selected taking into account the rejection thickness pipeline walls.