Numerical Simulation Study on the Development Effect of Gravity Fire Flooding by Vertical Well Sidetracking

Table 4

Comparison of numerical simulation results and calculation results.

Number	The length of sidetracking in vertical wells	Perforated position				Recovery ratio (%)
						Analog value	Estimated value	Error
1	3/7	1/3	0.18	60000	250	55.87	63.30	13.29
2	3/7	1	0.24	36000	416.67	54.78	56.48	3.10
3	4/7	2/3	0.18	90000	83.33	45.45	43.76	3.72
4	4/7	1	0.2	24000	625	42.25	44.04	4.24
5	5/7	1/3	0.12	42000	357.14	33.62	32.41	3.60
6	5/7	2/3	0.18	21000	238.09	25.73	23.29	9.48