Oil and gas continuous metering device in metering plant

Overview

The Oil and gas continuous metering device in metering plant (hereinafter referred to as the device) is used for the multiphase separation and measurement of oil well output, which is independently developed by our company. It has obtained multiple patents (utility model patent, patent certificate number: ZL 2017 2 1191366.7/ ZL 2018 2 2159752.9). The device is installed in the field metering room and is used for the multiphase measurement of the output of each oil well in the metering room. The device can be matched with optional well valve set. Under the control of the system, the automatic switch and timing measurement of each well measurement port are realized. It eliminates the process of manual reversing valve, and reduce the labor intensity of the staff. This device can effectively solve the realistic difficult problems in traditional measurement methods, such as poor intermittent sampling accuracy, large labor intensity and failure to reflect the data in time etc. It facilitates timely access to objective data to analyze and study the yield changes of the wells in the block of the unit, and provides a reliable basis for the dynamic management of reservoirs.

The successful development of the device provides a solution for the accurate measurement of multiphase flow under the condition of multiphase mixed transmission process for oil field production, and provides effective support and means for oil field production to realize the fine management of single wells, which is beneficial to promote the improvement of oil field production technology and management level in the oil extraction industry.

Working principle

When the oil well receives liquid, it can realize effective separation of gas-liquid phase by the gas-liquid cyclone separator. The separation controller automatically controls the liquid level and gas-liquid pressure difference, and the separated gas and liquid pass through gas flowmeter, mass flowmeter and pressure instrument respectively, and the accurate measurement of gas volume, liquid volume, oil volume, water content, system pressure, temperature and other parameters is realized.

Functional features

1. With non-radioactive measurement, and easy to use and promote;

2. Wide application scope. Applicable to the multi-phase flow measurement of single well in oil field under different conditions and media flow patterns in various complex environments such as land, sea and desert;

3. Pipeline structure design matching the process is used, pressure-free device with reliable use;

4. High accuracy of the measurement data and evident comparative advantage;

5. With 24-hour continuous automatic online measurement and tracking description function;

6. Reliable operation, long service life, easy to operate, less maintenance and low maintenance and operation cost;

7. Fixed and installed in the metering room, used for the measurement of the output of each oil well in the metering room.

8. Can realize real-time measurement of single-phase or multi-phase parameters of oil well output (customer optional);

9. Can realize real-time acquisition, calculation and analysis of field data, and can generate liquid, gas, water (oil) metering curve and various types of production reports (customer optional);

10. Can realize alarm function for abnormal data such as pressure, temperature and liquid volume (customer optional);

11. Can realize remote sending and transmission of field data (customer optional);

12. Can be matched with optional well valve set, without the process of manual reversing valve and can achieve unattended measurement of single well in metering room (customer optional).

Automatic well selection valve group

Main technical indicators

. Measurement range and conditions

Ø Liquid volume: 0-5000t/d;

Ø Gas volume: 0-100000Nm³/d;

Ø Water content: 0～100%;

Ø Design pressure: 1.6, 2.5, 4.0, 10.0MPa or as required by the user;

Ø Medium temperature: ≤120℃ (Under working condition temperature);

Ø Environment temperature: -40~80℃.

. Measurement accuracy

Ø Liquid flow: ±2% ～ ±5%;

Ø Comprehensive water content: ±2% ～ ±5%;

Ø Gas flow: ±5% ～ ±10%.

. Main parameters of the device

Display interface

Multi-parameter metering device of oil well in metering room (basic type)

Structure composition: main body of the device, measuring instrument (mass flowmeter, gas flowmeter, pressure transmitter, pressure gauge), electric auxiliary temperature control and external insulation system of the device, data acquisition and analysis.

Multi-parameter metering device of oil well in metering room (high configuration type)

Structure composition: main body of the device, measuring instrument (mass flowmeter, Gas flowmeter, pressure transmitter, pressure gauge), electric auxiliary temperature control and external insulation system of the device, automatic well selection valve group and system, data acquisition and analysis processing system, data remote sending and transmission system (customer optional).