近期，吉林油田在松辽盆地南部乾安—大情字井地区中浅层地质勘探实现关键技术突破，通过创新成藏地质认知，破解老区常规勘探目标枯竭难题，落实一批优质勘探储量，为油田老区增储上产注入全新动能。

Recently, the Jilin Oilfield has achieved a breakthrough in key geological exploration in the middle and shallow layers of the southern part of the Songliao Basin, namely in the Gan'an - Daqingzi well area. Through innovative understanding of reservoir formation geology, it has solved the problem of depletion of conventional exploration targets in the old oilfield and identified a number of high-quality exploration reserves, injecting new impetus into the oilfield's efforts to increase reserves and production.

松辽盆地南部乾安—大情字井地区是吉林油田中浅层核心富油区，主力含油层涵盖黑帝庙、葡萄花、高台子、扶余等层系。经过长期高强度勘探开发，区域内大型常规构造、断块勘探目标已基本探明，后续储量接替难题突出，制约了区块持续开发。

The Gan'an-Daqingzi area in the southern part of the Songliao Basin is the core area with abundant oil reserves in the shallow layers of Jilin Oilfield. The main oil-bearing formations include the Heidimiao, Wugufa, Gaotazui, and Fuyu formations. After long-term and intense exploration and development, large-scale conventional structural and fault-block exploration targets in this area have been basically identified. However, the subsequent problem of reserve replacement is prominent, which has restricted the continuous development of the block.

2024年以来，吉林油田勘探科研团队系统梳理中央坳陷区断裂体系，创新深化地质成藏认知，明确断裂应力作用形成的构造脊具备油气富集优势，细化划分断块脊、断背脊两类构造类型，确立“构造脊+规模砂体”复合成藏模式，证实幅砂比是决定油气富集程度的核心关键，突破了传统勘探思路局限。

Since 2024, the exploration and research team of Jilin Oilfield has systematically studied the fault system in the central depression area, innovatively deepened the geological and hydrocarbon accumulation understanding, clearly identified that the structural ridges formed by the action of fault stress have the advantage of oil and gas accumulation, and refined the classification of two types of structures: fault ridges and back faults. They established the "structural ridge + scale sand body" composite hydrocarbon accumulation model, confirming that the ratio of effective sand volume is the core key determining the degree of oil and gas accumulation, thus breaking through the limitations of traditional exploration thinking.

依托全新地质认识，项目团队在目标区块批量落实优质勘探目标，筛选出93个幅砂比大于0.9的Ⅰ类构造脊资源，富集面积达72平方公里。2024至2026年，油田在高台子、扶余油层部署11口探评井，目前已完钻7口、试油4口、投产1口，其中H133-10井获高产工业油流，投产稳产效果优异，充分验证了新成藏理论的可靠性。

Based on the new geological understanding, the project team has systematically identified high-quality exploration targets in the target area, screening out 93 Class I structural ridges with a sand ratio greater than 0.9, covering an enrichment area of 72 square kilometers. From 2024 to 2026, the oilfield deployed 11 exploration and eva luation wells in the Gaotazhu and Fuyu oil layers. So far, 7 wells have been completed, 4 have been tested for production, and 1 has been put into production. Among them, Well H133-10 achieved high-yield industrial oil flow, and the production and stable production effect is excellent, fully verifying the reliability of the new reservoir formation theory.

本次勘探突破成功盘活松辽盆地中浅层剩余油气资源，开拓了老区精细勘探新方向。下一步，吉林油田将持续深化地质理论研究，加大重点区块勘探部署力度，持续挖掘优质油气储量，为油田稳产增产、资源可持续开发提供坚实的技术与资源支撑。

This exploration breakthrough has successfully revitalized the remaining oil and gas resources in the middle and shallow layers of the Songliao Basin, opening up a new direction for detailed exploration in the old area. In the future, Jilin Oilfield will continue to deepen geological theoretical research, increase the exploration deployment in key areas, and continuously explore high-quality oil and gas reserves, providing solid technical and resource support for the stable production and increased production of the oilfield as well as the sustainable development of resources.