Feasibility study of formation combustion of Henan shallow layer heavy oil oilfield

The Henan heavy oil reservoir is shallow,thin, heavy, dispersed and small. At present, old thermalrecovery area entered multi-time high cycle steam injectionstage, steam injection thermal recovery is getting more andmore worse, the equivalent remaining oil is still undergroundand difficult to produce, but the partial heavy oil and the ultra heavy oil can't be produced through the conventional thermal recovery, the availability of resources is low, the heavyoil reserve resources are also deficient, developing new technology to enhance recovery rate is in urgent need. For thisreason, feasibility study of formation combustion of Henanshallow layer heavy oil oilfield has been proposed. In the article, it unifies the geological feature and the present miningsituation of Henan oil field heavy oil reservoir, firefloodscreening standard, the equipment craft, the oil deposit geology, the indoor working model experiment, the economic aspect has been analysed to evaluate the feasibility of firefloodrecovery in Henan shallow layer heavy oilfield. The analytical study result indicated that it is generally feasible for partof the blocks.