Water Cut Meter

By utilizing its technique of microwave measurement, LeEngStar creates the water cut meter which are suitable for varied production sites.

This kind of products model the difference of transmission characteristics in different fluid medium (i.e., oil, water and emulsion) by the microwave sensing technique, analyze and compare the signal amplitude and phase phase shift and then get the water cut of the measured medium. LeEngStar’s intelligent water cut monitor is designed at the industrial grade, which can be applied in a wide range of demanding industrial environments, including full range water cut conditions, acidic conditions, heavy oil conditions, etc. This product is applicable to monitor the crude oil ranging from 0 to 100% in water cut, with high measure accuracy and stability. This product is specially designed a unique algorithm for the high water-cut wells (water cut > 80%) that enter the late stage of production in China, so as to fulfill the higher requirement of accurate data in single well water cut measurement.

Usually, due to the constantly changing of production conditions, there is no perfect measurement method or instrument specification which can cover the whole life cycle of a well. The modular design of this product makes it applicable to the changing well conditions, so it can serve well in the whole life cycle. This product also is equipped with the following modules for different scenarios:

1
Salinity Auto-salinity -adapting module(optional)
This module would improve the adaptability of the crude oil water cut meter to the wells with drastic salinity fluctuation. Users can also obtain the conductivity based on the data of this module in the case that the conductivity or true salinity cannot be obtained through sampling experiment. This module is suitable for high (the water cut shall be greater than 70% for ensuring water phase continuity), and the gas volume fraction shall be less than 70%.
2
Oil/water continuous phase switching measurement switching module (optional)
In case of water-in-oil continuous phase, the oil is leading in measurement signal; in case of oil-in-water continuous phase, the water is leading in measurement signal. The transition point of water-in-oil or oil continuous phase varies with the many factors including oil physical property, mixing degree of oil and water, and temperature. The oil/water continuous phase switching measurement module is to choose the continuous phase for the water cut meter, therefore It is recommended to install the oil-water continuous phase measurement switching module on the pipeline with flow of dramatically changing water cut inside, such as manifolds and separators, so as to improve the accuracy of measurement.
3
Gas phase compensation module(optional)
Gas phase compensation module: The default configuration of the water cut meter is applicable to wells with the volume gas content of less than 70%. For oil wells of high gas volume fraction, it is recommended to install the gas phase compensation module, so as to eliminate the influence of gas phase and improve the measurement accuracy.
4
Intelligent integrated online monitoring module for wellhead production parameters (optional)
This module adds pressure and temperature sensing units to achieve real-time monitoring of pipeline back pressure and fluid temperature during oil well production.

Technical Analysis

LeEngStar’s crude oil water cut meters adopt high frequency microwave sensing technique, realizes wide measuring range and high measuring accuracy. It is affected little by salinity, wax accumulation and corrosion, represents strong anti-interference ability, and can be applied in various industries.

Category of techniques
Water cut Measuring range
Measuring accuracy
Scaling Effect
Corrosion Effect
Salinity Effect
Safety
Cost

Conductivity method
40%-90%
Low
Out of Service
Out of Service
Largely affected
Safe
Low

Capacitance method
0%-40%
Low
Out of Service
Out of Service
Largely affected
Safe
Low

Radioactivity method
0%-100%
Middle
Affected
Not affected
Affected little
Dangerous
Very high

Microwave principle
	
		 
	
	
0%-100%
High
Affected little
Affected little
Affected little and measurable
Safe
Suitable

Multiphase Flow Data Analysis Tool

Product Functions and Values

1
accurate measured data of water cut
It provides real-time, continuous and accurate measured data of water cut.
2
save costs
The elimination of manual sampling and testing would save labor costs and improve the acquisition efficiency of water cut data.
3
fulfill the requirement on construction of smart oil field
The real-time online monitoring of water cut data would fulfill the requirement on construction of smart oil field, and also become important part of unmanned management.
4
it would provide reliable basis for optimizing the production management
The water cut meter gives the real-time and continuous data, without further estimation, if being jointly used with dynamometer, it would provide reliable basis for optimizing the production management.
5
discover the operating risks in oil wells
It would help to discover the operating risks in oil wells (such as water breakthrough, formation water \ water injection identification, etc.)
6
provide the best user experience
Customized APP for search and analysis of water cut data in multi/single wells provide the best user experience.

Technical Advantages

Analysis on Product Application Benefit

Application

LeEngStar provides a supporting water cut management system for oil field, which conducts multi-dimensional analysis on the water cut data of single wells and blocks in oil field，has the functions including real-time warning of water cut change, statement of water cut trend, horizontal and vertical comparison of water cut data, etc., and provides accurate basis for deciding all kinds of operations in oil field.

Case Study

LeEngStar’s water cut meter and intelligent multiphase flow measurement are used together to apply real-time monitoring of the three phases of oil, gas, and water of the production, and realize unmanned management of smart oil field.