This standard specifies the technical conditions, lab test process, field application conditions, selection principles and procedures for adding drag reduction agents in oil pipelines, as well as the operation requirements of pipelines, management of injection devices and safety guarantee measures.
This standard is applicable to oil pipelines that are used for the process operation of adding drag reduction agents.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 265 Petroleum products - Determination of kinematic viscosity and calculation of dynamic viscosity
GB/T l884 Crude petroleum and liquid petroleum products - Laboratory determination of density - Hydrometer method
SY/T 5536 The operation regulation of crude oil pipeline
SY/T 6671 Recommended practice for classification of locations for electrical installations at petroleum facilities classified as class 1, zone 0, zone 1 and zone 2
SY/T 6695 Operations practice of refined oil products pipeline
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
test loop
the pipeline system for testing the fluid flow of the drag reduction agents that meets the hydraulic requirements
3.2
drag reduction agent (DRA)
a chemical product that is used to reduce the friction resistance of turbulent flow in the pipeline fluid
3.3
drag reduction rate
a decrease degree of the friction pressure drop Δp1 when drag reduction agent is added compared with the friction pressure drop Δp0 when no drag reduction agent is added under the same conditions, which is expressed in %
3.4
flow increase rate
an increase degree of the flow rate Q1 when drag reduction agent is added compared with the flow rate Q0 when no drag reduction agent is added, which is expressed in %
