Calculation of Cementing ECD for Well Annuli with Narrow or Varied Radial Sizes

Table 7

Comparison of ECD results from five methods for annulus with varied radial sizes.

Model	No.	DB	LM	PVI	MR	DNS
Bingham	1	2.970	2.298	2.237	2.4661	2.4548
	2	2.346	2.714	2.694	2.9569	3.0217
	3	2.546	2.580	2.468	2.5566	2.5590
	4	3.296	2.491	2.447	2.7594	2.7668
	5	2.670	2.995	3.000	3.3799	3.3993
	6	2.869	2.576	2.602	2.8721	2.9010
	7	3.687	2.748	2.735	3.1482	3.3250
	8	3.073	3.368	3.408	3.9431	4.1615
	12	3.269	2.866	2.918	3.3090	3.3539
Power-Law	1	2.191	2.578	2.558	2.5428	2.5482
	2	2.542	3.006	3.016	3.0203	3.0699
	3	2.845	2.580	2.468	2.5566	2.5590
	4	2.349	2.786	2.638	2.7388	2.7553
	5	2.821	3.399	3.174	3.3401	3.3463
	6	3.138	2.898	2.734	2.8574	2.8714
	7	2.533	3.006	2.789	2.9466	3.1544
	8	3.151	3.786	3.496	3.7053	3.9263
	9	3.471	3.298	3.068	3.2347	3.4072