截至4月13日，我国最大浅层整装超稠油油田新疆油田公司风城油田作业区，在超稠油吞吐老区规模化推广应用驱泄复合开发技术上成效显著，生产阶段累产油达107.8万吨，区块年产能稳定在22万吨，为国内同类浅薄层超稠油高效开发注入强劲动能。

As of April 13th, the Fengcheng Oilfield Operation Area of Xinjiang Oilfield Company, the largest shallow-gas-cap ultra-heavy oil field in China, has achieved remarkable results in the large-scale promotion and application of the combined drive and drainage development technology in the old ultra-heavy oil production area. During the production stage, the cumulative oil production reached 10.78 million tons, and the annual production capacity of the block remained stable at 2.2 million tons, injecting strong impetus into the efficient development of similar shallow-layer ultra-heavy oil fields in China.

风城油田地处准噶尔盆地西北缘，其超稠油油藏埋藏浅，储层非均质性强，原油黏度高。随着开发进程持续推进，老区油井平均吞吐轮次已超30轮，普遍进入开发中后期，剖面动用不均，汽窜等问题日益突出，油汽比持续下降，年产油量逐年递减。传统蒸汽吞吐管理模式已难以满足油田可持续发展需求，寻找高效接替开发技术成为紧迫课题。

The Fengcheng Oilfield is located at the northwest margin of the Junggar Basin. The ultra-heavy oil reservoirs there have a shallow burial depth, strong heterogeneity of the reservoir, and high viscosity of the crude oil. As the development process continues, the average production rounds of the old oil wells have exceeded 30, and they generally enter the middle and late stages of development. The profile utilization is uneven, and problems such as vapor migration and channeling have become increasingly prominent. The oil-gas ratio continues to decline, and the annual oil production is decreasing year by year. The traditional steam flooding management model has been unable to meet the sustainable development needs of the oilfield. Seeking efficient alternative development technologies has become an urgent issue.

面对开发困局，该作业区以接替开发技术突破为核心，开展系统谋划。在深入油藏评价，明确剩余油潜力的基础上，创新提出并实践了适用于浅薄层超稠油的驱泄复合开发技术。该技术通过改变油井开发模式，利用蒸汽超覆作用在油层上部形成蒸汽腔，借助蒸汽压驱及原油重力作用，将加热降粘后的原油从下部生产井高效采出，实现了热量与驱动力的有机结合，有效动用井间剩余油。

Facing the development predicament, this operation area focused on breakthroughs in replacement development technologies and carried out systematic planning. Based on in-depth reservoir eva luation and clear identification of remaining oil potential, it innovatively proposed and implemented a combined development technology for shallow-layer ultra-heavy oil. This technology changes the development mode of oil wells, uses the super-cooling effect of steam to form a steam cavity on the upper part of the oil layer, and relies on steam pressure drive and the gravity of crude oil to efficiently extract the heated and de-slimmed crude oil from the lower production wells. It achieves an organic combination of heat and driving force, effectively mobilizing the remaining oil among wells.

为深入理解蒸汽腔的发育规律及影响因素，科研人员开展多项专题研究，优化注汽方式和参数。针对不同开发阶段制订相应技术措施：前期采用整体注汽模式，扩大蒸汽腔范围，强化井组连通性；中期推行多点注汽与异步注采相结合，着力提高水平段动用程度，推动蒸汽腔均衡发育；后期辅以氮气辅助隔热保压措施，持续稳定开发效果，最终实现油井产油量与油汽比的显著提升。

To deeply understand the development patterns and influencing factors of the steam chamber, researchers have conducted a series of specialized studies, optimizing the injection methods and parameters. Corresponding technical measures are formulated for different development stages: in the early stage, the overall steam injection mode is adopted to expand the scope of the steam chamber and enhance the connectivity of the well groups; in the middle stage, multi-point steam injection combined with asynchronous injection and production is implemented, focusing on improving the utilization rate of the horizontal sections and promoting the balanced development of the steam chamber; in the later stage, nitrogen-assisted insulation and pressure maintenance measures are supplemented to continuously achieve stable development effects, ultimately achieving significant improvements in the oil production volume and the oil-gas ratio of the oil wells.

目前，该油田驱泄复合技术应用规模已扩大至105井组，日产油水平提升至630吨以上，油汽比提高0.188。下一步，风城油田作业区技术人员将持续聚焦稠油高效开发核心需求，进一步强化驱泄复合井组精细调控，扩大异步注采应用规模，加快推进井网完善与工艺配套升级，奋力推动浅层超稠油开发提质增效，为保障国家能源安全贡献风城力量。

At present, the application scale of the combined drainage and injection technology in this oilfield has expanded to 105 well groups, with the daily oil production increasing to over 630 tons, and the oil-gas ratio rising by 0.188. In the next step, the technical personnel of the Fengcheng Oilfield operation area will continue to focus on the core needs of efficient development of heavy oil, further strengthen the precise control of the combined drainage and injection well groups, expand the application scale of asynchronous injection and production, accelerate the improvement of well network and process matching, and strive to promote the quality improvement and efficiency enhancement of shallow ultra-heavy oil development, contributing to the safeguarding of national energy security with the efforts of Fengcheng.