Recovery Method and Parameter Optimization of a Pilot Test for Conformance Control Flooding and Thermal Recovery in the Offshore Heavy Oilfield

Table 6

The experiment scheme and its result of B30h well with thermal recovery.

Parameter	Steam injection velocity (t/d)	Shut-in time (d)	Steam injection temperature (°C)	Cycle time of thermal fluid huff and puff (month)	Steam injection quantity in a cycle (t)	Scheme result			Comprehensive evaluation index
						Accumulative oil increment (m^3/t)	Production-injection ratio	Recovery increment (%)
5	120	2	260	9	3500	0.772	1.582	2.163	1.506
6	120	3	265	12	4000	0.842	1.638	2.020	1.500
7	120	4	270	15	4500	0.912	1.759	2.052	1.574
8	120	5	275	18	5000	1.052	1.913	2.104	1.690
…	…	…	…	…	…	…	…	…	…
17	150	2	275	12	4500	0.797	1.744	2.151	1.564
18	150	3	270	9	5000	0.534	1.564	2.137	1.412
19	150	4	265	18	3500	1.895	2.412	2.653	2.320
20	150	5	260	15	4000	1.263	2.165	2.526	1.985