CAJ | 학술논문

基于塔河缝洞型碳酸盐岩油藏地质特征和开采规律,建立了一套能够模拟以补充能量和重力置换为主要作用机理的单井注水替油室内试验装置.在接近实际油藏条件下,采用注水、注气进行了对注入孔隙体积倍数与采出程度、压力等关系试验,结果表明:天然能量开采程度低;多轮注水在两次注水后基本失效;多轮注水稳定开采后,后期的多轮注气开采有很好的采出效果,尤其是前三轮尤佳,注气阶段后采出程度增加了27.4%.
기우탑하봉동형탄산염암유장지질특정화개채규률,건립료일투능구모의이보충능량화중력치환위주요작용궤리적단정주수체유실내시험장치.재접근실제유장조건하,채용주수、주기진행료대주입공극체적배수여채출정도、압력등관계시험,결과표명:천연능량개채정도저;다륜주수재량차주수후기본실효;다륜주수은정개채후,후기적다륜주기개채유흔호적채출효과,우기시전삼륜우가,주기계단후채출정도증가료27.4%.
Based on the geological characteristics and the exploitation rule of Tahe fractured carbonate reservoir, a set of indoor experimental devices that can be used to simulate single-well water injection for oil displacement is established. The main mechanism of the devices is to add energy and replace gravity. Closing to the actual conditions of the reservoir, water injection and gas injection are carried out to test the correlation between the multiple of pore volume and the recovery degree and stress. The results show that exploitation with natural energy is on a low level. And the injection after two rounds becomes invalid basically. In addition, after several rounds of water stability in the exploitation, gas injection in the later rounds of exploitation has a good recovery results, especially in the former three rounds. After gas injection there is an increase of 27.4 percent in the degree of recovery.