CAJ | 학술논문

气体在地下多孔介质中的渗流规律复杂,在不同的条件下气体的渗流状态多变,给气藏开发带来了不便.为了区分气体不同的渗流状态,在火山岩气藏渗流状态实验的基础上,利用努森数和雷诺数对渗流状态进行了划分.实验数据处理结果显示:气测渗透率和平均压力倒数的关系不是克林肯贝格(Klinkenberg)所说的直线关系,而是在高压力区呈对数关系,低压力区呈指数关系,中间呈直线关系的三段式.依据实验结果可以确定雷诺数大于1(Re>1)的为惯性流段、努森数大于10(Kn>10)的为强滑脱段、中间为滑脱段.渗流状态的划分,对低渗透火山岩气藏的开发有一定的指导意义.
기체재지하다공개질중적삼류규률복잡,재불동적조건하기체적삼류상태다변,급기장개발대래료불편.위료구분기체불동적삼류상태,재화산암기장삼류상태실험적기출상,이용노삼수화뢰낙수대삼류상태진행료화분.실험수거처리결과현시:기측삼투솔화평균압력도수적관계불시극림긍패격(Klinkenberg)소설적직선관계,이시재고압력구정대수관계,저압력구정지수관계,중간정직선관계적삼단식.의거실험결과가이학정뢰낙수대우1(Re>1)적위관성류단、노삼수대우10(Kn>10)적위강활탈단、중간위활탈단.삼류상태적화분,대저삼투화산암기장적개발유일정적지도의의.
The seepage law of gas in underground porous media is complex and gas seepage state varies a lot in different conditions. These have brought inconvenience to gas reservoir development. In order to distinguish the different seepage states of gas, based on the seepage state experiment of volcanic gas reservoir, this paper carries on the seepage state division. The seepage state experimental results indicate that: the relationship between gas log permeability and the reciprocal of average pressure is not linear as Klinkenberg said. At low pressure, they are exponential; at high pressure, they are logarithmic and at the middle section, they are nearly linear. According to the experimental results, Reynolds number greater than 1 (Re>1) are the inertial flow segment; Knudsen number is greater than 10 (Kn>10) are strong slippage segment and between them are slippage segment. The seepage state division has certain significance to the volcanic gas reservoir development.