新疆油田浅层稠油藏选层开采技术的推广应用

Applications of Oil-bearing Formation Selection Recovery Technique of Shallow Heavy Oil Reservoirs to Xinjiang Oil Field

针对稠油开采 ,推广应用浅层稠油选层开采技术这项新的增产措施 .利用热胀式封隔器 ,可诱导蒸汽进入注蒸汽开采目的层 ,提高油藏动用程度 .单井平均增产原油 2 31 t,比措施前吞吐周期产油量提高 30 %～ 84% .该项技术施工方便 ,投资少 ,降低了油田污染 ,经济效益明显 .

A selection recovery technique of shallow heavy oil reservoirs is developed. A thermal expansion packer and tubing string consist of various technological tubing strings for different recovery purposes. In steam injecting recovery, the packer induces steam into the objective formation whose producing degree is lower. Therefore, the whole producing degree of the reservoir produced by steam soaking is increased, and total production is also increased. The application results of the technique to Xinjiang Oil Field show that, the crude oil production of simple well increases average by 231t, which is 1 30~1 84 times as much as that before the technique is made use of. The technique is of simple operation and less investment. It decreases pollution in oilfields, and it has notable economic benefit.