Oil and gas continuous metering device for crude oil wellhead

Overview

The Oil and gas continuous metering device for crude oil wellhead (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 fixed at the single wellhead and is used for the measurement of well output from remote wells and single well of oil well without design interval. 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. Real-time measurement of single-phase or multiphase parameters of well output (customer optional);

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

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

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

8. 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);

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

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

11. Fixed at the wellhead of single well, and used to measure the output of single well in remote wells and oil wells without design interval;

12. Skid mounted structural design, easy to install and replace measuring wellhead.

System network diagram

Main technical indicators

.Measurement range and conditions

Ø Liquid volume: 0-5000t/d;

Ø Gas volume: 0-250000Nm³/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 crude oil wellhead

The device is fixed at the wellhead of single well, and used for the measurement of well output from remote wells and single well of oil well without design interval.

Based on the purpose and functional requirements, the multi-parameter metering device of crude oil wellhead can be divided into basic type and high configuration type.

Multi-parameter metering device of crude oil wellhead (basic type)

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

Multi-parameter metering device of crude oil wellhead (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, data acquisition and analysis processing system, data remote sending and transmission system (customer optional).