Optimization technology of injection-production well pattern in the complex small-fault-block high water cut reservoirs of Jiangsu oilfield
The complicate small-fault-block reservoirs of Jiangsu oilfield have been in the high water cut development stage,after the long-term water flooding.At present,the heterogeneity of reservoirs is more prominent to the injection-production well pattern,and there are inefficient and ineffective water flooding cycles in the local area of the reservoirs.It is urgent to carry out research on the optimization and adjust-ment of the injection-production well pattern.Based on the original well pattern,the remaining oil enrich-ment types and influencing factors of heterogeneous reservoir,the reservoir numerical simulation technolo-gy is used to carry out the simulation study on the optimization technology policy of well pattern under the condition of phase control.According to the simulation results,the optimization technology policy limita-tions on the well pattern have been built,including in the well pattern thinning and high water cut trans-fer.They have been applied to instruct the optimization and adjustment on the original well pattern recon-struction in Chen-2 fault block and Wei-2 fault block,and have obtained good application results,which provide the technical support for the water flooding improvement of high water cut reservoirs.
complicate small-fault-blockhigh water cut reservoirinjection-production well patternwater flooding effect
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