中国石油网消息：9月5日获悉，长庆油田水平井化学调堵技术在环江、合水及华庆等重点油藏已实现工业化应用逾1300井次，累计少递减原油23万吨、减少采出水21.5万立方米，实现自然递减率和含水上升率的“双下降”。

China Oil News: On September 5th, it was learned that the horizontal well chemical plugging and blocking technology of the Changqing Oilfield has been applied industrially in key oil reservoirs such as Huanjiang, Heshui and Huacun for over 1,300 times. It has saved 230,000 tons of crude oil and reduced 215,000 cubic meters of produced water, achieving a "double reduction" in natural decline rate and water content increase rate.

鄂尔多斯盆地低渗透油藏天然微裂缝、优势孔道普遍发育，储层非均质性强，主力油藏水平井规模开发区中高含水期含水上升速度快、产量递减大、来水方向复杂、常规注采调控手段治标不治本等问题突出，严重制约了水平井的效益开发。

In the Ordos Basin, natural micro-fractures and dominant channels are widely developed in low-permeability oil reservoirs. The reservoirs have strong heterogeneity. In the large-scale development zones of main oil reservoirs using horizontal wells, problems such as rapid water cut increase, significant production decline, complex water influx direction, and the lack of effectiveness of conventional injection-production control methods have become prominent, seriously restricting the efficient development of horizontal wells.

为此，长庆油田科研人员以“控水稳油、精细挖潜、技术创新”为主线，聚焦重点、精准发力，系统布局、综合施策，持续攻关水平井化学调堵技术，创新形成了适应油田开发特点的注水井深部调驱提升水平井开发效果技术、见水水平井定点化学堵水技术，以及油水井双向调堵技术等，全力助推老油藏控水增油和老井挖潜。

Therefore, the scientific researchers of Changqing Oilfield took "controlling water injection, stabilizing oil production, and precise exploitation, as well as technological innovation" as the main line, focused on key areas, exerted precise efforts, made systematic arrangements and implemented comprehensive measures. They continuously explored and improved the chemical well control technology for horizontal wells, innovatively developed technologies such as deep water injection well deep stimulation to enhance the development effect of horizontal wells, and targeted chemical well-blocking technology for water breakthrough wells, as well as the bidirectional well control technology for oil and water wells. They made every effort to promote water control and oil production increase in old oilfields and to enhance the exploitation of old wells.

同时，科研人员潜心攻关，通过迭代升级与创新研发，打造出系列化堵水材料及成套井下工具等，建立了三大系列5项核心工艺技术，为现阶段见水水平井的治理提供了新途径。此外，油田持续加强知识产权布局，强化关键核心技术保护，累计授权、受理国家专利20余件。

Meanwhile, the researchers devoted themselves to their research and development. Through iterative upgrades and innovative research, they created a series of water-blocking materials and complete sets of downhole tools, establishing three major series and five core process technologies. These have provided new approaches for the treatment of water-bearing horizontal wells at present. In addition, the oilfield has continuously strengthened its intellectual property layout and strengthened the protection of key core technologies. A total of more than 20 national patents have been authorized or accepted.