出砂冷采技术在低周期蒸汽吞吐井中的应用

研究了应用稠油出砂冷采技术对地层原油含有溶解气的各类疏松砂岩稠油油藏进行冷采 ,以获得较高的原油产量的技术 .施工中对稠油井采用强力射孔技术和设计精良的螺杆泵系统 ,通过以砂带油方式开采稠油 ,实现稠油冷采 ;在河南油田得了较好的效果 .单井产量一般可达 3～ 5 0 t/d,是常规降压开采的数十倍至数百倍 ,日产油比蒸汽吞吐提高 1～ 3倍 ,采收率一般可达 8%～ 2 0 % .稠油出砂冷采技术对地层原油中含有溶解气的疏松砂岩稠油油藏具有广泛的适应性 .将出砂冷采技术应用于低周期蒸汽吞吐井中 ,进一步拓宽了稠油出砂冷采技术应用领域

Application of Sand Production Cold Recovery Technology to Low-cycle Steam Soaking Wells

The sand production cold recovery technology is widely suitable to unconsolidated sandstone heavy oil reservoirs in which there is dissolved gas, and the oil wells can get high output. In the construction of the technology, a designed-well screw pump is used, and deeply penetrating combined perforating technique is also applied in order to stimulate the reservoirs producing sand. When the reservoirs produce sand, the heavy oil is carried into the wells by the sand. The cold recovery technology is applied to Henan Oilfield, single-well output can generally reach to 3~50t/d, which is tens to hundreds times as much as that when conventional pressure-decreasing production technology is applied. Daily oil output is one to three times as much as that when steam soaking technology is applied. Recovery factor can reach to 8%~20%. The cold recovery technology can also be applied to low-cycle steam soaking wells.