中国石油网消息：5月25日，走进国内首个规模化应用“井下油水分离注采开发技术”区块——大庆油田杏十试验区，了解到该区块先期投产的34口试验井正平稳有序运转。

China Oil News: On May 25th, upon entering the first domestic block where the "downhole oil-water separation injection and production development technology" has been applied on a large scale - the Xingi Decade Experimental Area of Daqing Oilfield, it was learned that the 34 pilot wells that were put into production earlier in this block were operating smoothly and orderly.

现场数据显示，34口井日产油量较试验前增幅达273%，平均单井井口日产液量降幅达74.5%，为特高含水油田效益开发开辟出新路径。

The on-site data shows that the daily oil production of 34 wells has increased by 273% compared to before the test, and the average daily liquid output at the wellhead has decreased by 74.5%, opening up a new path for the efficient development of ultra-high water-cut oilfields.

只用一口井，同时干“采油+注水”两件事，实现井下闭环、绿色高效开采，这便是大庆油田自主研发的“井下油水分离注采开发技术”的原理。在中国工程院院士王德民领衔的攻关团队的潜心研究下，该技术实现了同一井筒内同时采出与注入，构建起两套层系之间的循环注采体系。

Using just one well to simultaneously carry out "oil extraction + water injection" operations, achieving an underground closed-loop and green, efficient exploitation process - this is the principle of the "downhole oil-water separation injection-production development technology" independently developed by Daqing Oilfield. Under the dedicated research of the breakthrough team led by Chinese Academy of Engineering academician Wang Demin, this technology has enabled simultaneous extraction and injection within the same wellbore, and established a circulation injection-production system between the two layers.

无须钻探新井，即可使采油井点数量翻番，让含水率超过98%、已逼近经济开采极限的油井重新具备效益开发价值。同时，大幅降低井口产液量及后续水处理成本，实现了采油技术以及开发方式上的革命性突破。

Without the need to drill new wells, the number of production wells can be doubled, enabling oil wells with a water content exceeding 98% and approaching the economic exploitation limit to regain their value for efficient development. At the same time, it significantly reduces the liquid production at the wellhead and the subsequent water treatment costs, achieving a revolutionary breakthrough in oil production technology and development methods.

目前，该技术已实现从先导试验到规模应用的关键跨越。“通过井网重构，这项技术有效提高了储层动用程度，不仅适用于大庆油田，对边际油田、低品位油田的开发同样具有广阔应用前景。”大庆油田科技信息部井下油水分离注采开发项目经理部经理边向南说。

At present, this technology has achieved a crucial leap from pilot testing to large-scale application. "Through well pattern reconfiguration, this technology effectively improves the utilization rate of the reservoir. It is not only applicable to Daqing Oilfield but also has broad application prospects for marginal oilfields and low-grade oilfields," said Bian Xiangnan, the project manager of the Downhole Oil and Water Separation Injection and Production Development Department of the Science and Technology Information Department of Daqing Oilfield.

杏十试验区的初见成效，不仅验证了该技术的可靠性与适用性，而且为解决特高含水老油田小砂体驱替难、注采关系不完善等共性难题提供了有力支撑。

The initial results of the Xingshi Experimental Area have not only verified the reliability and applicability of this technology, but also provided strong support for solving common problems such as the difficulty in sand body displacement and the imperfect injection-production relationship in ultra-high water-cut old oilfields.