In order to solve the problem of excess production of carbon monoxide in cyclic steam stimulation process of Hongshan oilfield

the corresponding laboratory researches have been carried out. Through physical simulation experiments and multi-parameter sensitivity analysis

the effect of technological parameters such as steam temperature

steam injection volume

and soaking time on carbon monoxide output concentration have been investigated. Furthermore

the possible solutions for carbon monoxide production have been proposed based on the effects of different factors. The results show that the influencing order of the three dominant factors is steam temperature

steam injection volume and soaking time. Reducing the steam temperature can effectively reduce the carbon monoxide output concentration

but when the steam temperature drops below 220 ℃

the crude oil production will be adversely affected. Therefore

for the wells in Hongshan oilfield with relative low carbon monoxide exceeding degree

it is recommended to reduce the steam temperature to 220 ℃ to keep the carbon monoxide concentrations below safe levels; for those ones with relative high exceeding degree

in addition to the above measures

the steam injection volume should be increased to ensure that the periodic oil production does not decrease significantly.