The normal metering uncertainty (A) For Custody Transfer Liquid ± 0.25% Gas ± 1.00 % (B) For Allocation Liquid ± 1.00% Gas ± 2.00% (C) For Reservoir Management Through Well Testing, and for Operational & Requirement Liquid ± 10.00 %… Read More ›
In my knowledge and understanding, there are 3 types of allocation system, 2 of which are allocation metering and 1 is software based. Let’s discuss a bit. (1) Full Allocation : Directional Allocation Installing metering system on all different parties… Read More ›
Metering System Categories Custody transfer – forms the basis for contractual arrangements between sellers and buyers, different producers and owners and government. Allocation – meant for allocation or production entitlement involving two parties or more. Well test / Operational –… Read More ›
Each gas or liquid flowmeter can be calibrated against a master meter onsite, or in liquid metering applications, by a stationary or portable prover (Figure 1). For pipe sizes below 42” diameter (1.07 m), on-site provers can be used. Flowmeters… Read More ›
Accuracy is the ability of the meter to measure close to the true value of the flow. Manufacturers usually state the accuracy of their flowmeters. This is often the accuracy of the flowmeter in the calibration lab, but it can… Read More ›
The accuracy curve of a volume meter is a straight line denoting a constant meter factor. Meter linearity is expressed as the total range of deviation of the accuracy curve from this straight line between the minimum and maximum flow… Read More ›
Disclaimer Disclaimer – this is my note as of 2016. Hasn’t been updated since then. Prover Design Generally there are 2 prover design. Displacement prover Master-meter prover Displacement Prover There are 2 type of displacement prover Conventional pipe prover Small… Read More ›
Turbine Meter & PD Meter Turbine meter and positive displacement (PD) meters are normally used to measure liquid hydrocarbon for custody transfer purpose. Turbine meter has been the meter of choice for measuring liquid hydrocarbon for custody transfer and allocation… Read More ›
