计算模型

适用条件

Dranchuk-Abu-Kassem (DAK)

1.0 ≤ T_pr ≤ 3, 0.2 ≤ p_pr ≤ 30; 0.7 ≤ T_pr ≤ 1.0, p_pr < 1.0

Dranchuk-Purvis-Robinsion (DPR)

1.05 ≤ T_pr ≤ 3.0; 0. 2 ≤ p_pr ≤ 30

Hankinson-Thomas-Phillips (HTP)

1.1 ≤ T_pr ≤ 3.0; 0 ≤ p_pr ≤ 15.0

Beggs-Brill (BB)

1.5 ≤ P_pr< 4.4, 1.05 < T_pr ≤ 1.1

Cranmer

P > 35 MPa

Wichert-Aziz (WA)

0~17.24 MPa

郭绪强校正模型(GXQ)

P > 60 MPa (对HTP和DPR的校正)