A predictive flow assurance assessment method and system

• Main Author: Donzier, Eric
• Format: Patent
• Language: English; French; German
• Published: 02.01.2019
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

A predictive flow assurance assessment method comprising: - measuring (S1) at least one actual parameter related to a multiphase fluid mixture (10) flowing in a main flow line (11, 14); - taking (S2) a sample (60) from the multiphase fluid mixture (10) flowing in the main flow line (11, 14); - modifying (S3) at least one control parameter of the sample (60) until a transition appears, wherein said transition would cause a flow issue when occurring in the main flow line (11, 14); - detecting (S4) the transition of the sample (60) and determining a corresponding transition value associated with the at least one control parameter; - calculating (S5) a difference between the at least one actual parameter and the at least one transition value, said difference being representative of a margin relatively to a similar transition appearance in the main flow line causing a flow issue in the main flow line; and - implementing (S8, S9) a flow issue preventing step when the difference exceeds a given threshold (S7).