CAJ | 학술논문

耿231井区位于姬塬油田东北部大梁湾鼻隆带上,探明含油面积4.2 km~2,探明地质储量153.2×10~4t。针对姬塬油田耿231井区在开发过程中呈现动液面高、产液量高、含水高、产油量低的＂三高一低＂的开发现状,采取水驱曲线特征法、产量递减法、童氏改进图版法等方法,对该区采收率进行评价,在此基础上提出稳油控水的措施及建议以达到提高单井产量、提高采收率的目的。合理选择水驱曲线的直线段是水驱曲线特征法的关键,在一定程度上更加符合该区块的实际情况。通过把童氏图版比例系数改为10.978后,使其更加适用于该区块长2低渗透油藏含水变化规律和采收率的预测,对该区块开发水平的评价有重要的指导意义。通过三种方法的比较,校准,其结果更加接近标定采收率。
경231정구위우희원유전동북부대량만비륭대상,탐명함유면적4.2 km~2,탐명지질저량153.2×10~4t。침대희원유전경231정구재개발과정중정현동액면고、산액량고、함수고、산유량저적＂삼고일저＂적개발현상,채취수구곡선특정법、산량체감법、동씨개진도판법등방법,대해구채수솔진행평개,재차기출상제출은유공수적조시급건의이체도제고단정산량、제고채수솔적목적。합리선택수구곡선적직선단시수구곡선특정법적관건,재일정정도상경가부합해구괴적실제정황。통과파동씨도판비례계수개위10.978후,사기경가괄용우해구괴장2저삼투유장함수변화규률화채수솔적예측,대해구괴개발수평적평개유중요적지도의의。통과삼충방법적비교,교준,기결과경가접근표정채수솔。
The location of Geng 231 area is in the northeast region of Jiyuan oil field,the proven oil area is 4.2 km~2 and proven geological reserves is 153.2×10~4t until now.This paper aims at the developing situation of high dynamic liquid surface,high producing fluid volume, high water -bearing and low oil -production,the ＂three high and one low＂ status of development of one low＂ in the development process of Geng 231 area.It takes three methods to study the evaluation of recovery ratio in this researched area,which are the method of water drive curves、the method of production decline and the method of improved Tong＇s chart.On the basis,measures and suggestions of the stability oil and controlling water is proposed to improve the output of single well and enhance the oil recovery ratio. Reasonable choice of straight segment is the key in the method of water drive curve,in a certain extent,it is more actual in the conditions of the blocks.Instead of the ratio,10.978 makes it more suitable for water change rule and recovery forecast of chang 2 low permeability reservoir of this block,it is more important for the evaluation of development level conditions.Through comparison、correction and calibration of three kinds of methods, it＇s outcome is closer to calibration recovery.