风城浅层超稠油蒸汽吞吐后期提高采收率技术  

Enhanced Oil Recovery in the Late Stage of Shallow Super-Heavy Oil Reservoir with Steam Huff-Puff in Fengcheng Oilfield

作　　者：孙新革[1] 赵长虹[1] 熊伟[1] 李凌铎 梁珊 Sun Xinge;Zhao Changhong;Xiong Wei;Li Lingduo;Liang Shan(PetroChina Xinjiang Oilfield Company,Karamay,Xinjiang 834000,Chin)

机构地区：[1]中国石油新疆油田分公司,新疆克拉玛依834000

出　　处：《特种油气藏》2018年第3期72-76,81,共6页Special Oil & Gas Reservoirs

基　　金：国家科技重大专项"稠油多介质蒸汽驱技术研究应用"(2016ZX05012-001);"提高浅层超稠油水平井蒸汽驱油藏动用效果技术研究"(2016ZX05012-005);新疆油田;吐哈油田勘探开发增产关键技术"新疆油田浅层稠油稳产提效技术研究与应用"(2017E-0408)

摘　　要：为改善浅层超稠油油藏蒸汽吞吐后期开发效果,采用解析分析和数值模拟方法,明确了超稠油油藏在注蒸汽驱替过程中的重力、驱动力的相互作用机理,提出了驱泄复合开采技术。通过油藏工程优化研究,设计了直井、水平井多种组合方式的蒸汽吞吐后期接替方式,并明确其适合的油藏地质条件及转换方式的时机。在风城油田重32井区先后开展多个先导试验,针对驱泄复合开采的3个阶段,制订适应的注汽方式、注采参数和调控方法,实现了地层条件下原油黏度大于60×10~4m Pa·s的超稠油油藏蒸汽驱开采,预计最终采收率可从蒸汽吞吐阶段的20%~25%提高至40%~50%。为国内外同类油藏开发提供借鉴经验。Analytical and numerical simulation are used to improve the late-stage steam huff-puff performance of the shallow super-heavy oil reservoir.The interaction mechanism between gravity and driving force in the process of steam-flooding for the super-heavy oil reservoir is clarified to propose a flooding-drainage compound technology.A various combinations of vertical and horizontal wells for the subsequent replacement of steam-flooding is designed through reservoir engineering optimization.In addition,it also determines the reasonable geological conditions and conversion timing.A number of pilot tests are conducted in the Block Zhong32 to formulate adaptive steam injection pattern,injection-production parameters and adjustment-control measurements for the three stages of flooding-drainage development.The super-heavy oil reservoir with formation oil viscosity exceeding 60 × 104 m Pa · s has been successfully developed by steam-flooding and the expected ultimate recovery factor can be enhanced from 20%- 25% with steam huff-puff to 40% - 50%.This research could provide certain reference for the development of similar domestic and foreign reservoirs.

关 键 词：风城油田 浅层超稠油 驱泄复合技术 提高采收率 

分 类 号：TE345[石油与天然气工程—油气田开发工程]