溱潼凹陷复杂断块油藏CO_2吞吐试验

Experiments of CO_2 stimulation in the complex fault block oil reservoirs of Qintong sag.

以苏北油区溱潼凹陷断块油藏为例 ,分析了高渗透特高含水油藏、低渗透低效油藏和稠油油藏CO2 吞吐的试验效果及其主要影响因素。并由此总结了CO2 吞吐的选井条件。试验结果表明 ,CO2 吞吐工艺简单、投资少、见效快、适用范围广 ,在有CO2 资源的条件下 ,可在复杂断块油藏中推广应用。

Effect and its main influencing factors of the CO 2 stimulation experiments are analyzed in oil reservoirs with extra high water cut and high permeability, loweffective oil reservoirs with low permeability and heavy oil reservoirs taking the fault block oil reservoirs of Qintong sag in Subei petroliferous area as examples. The conditions of well selection in the CO 2 stimulation are summed up. The experiment results present that CO 2 stimulation is simple with low investment, quick response and it is used widely. It may make a popular use in the complex fault block oil reservoirs at the condition of having CO 2 resource.