复杂油气藏
複雜油氣藏
복잡유기장
COMPLEX HYDROCARBON RESERVOIRS
2012年
2期
51-53
,共3页
王浪波%刘新菊%王小军%何奉朋%李伶东
王浪波%劉新菊%王小軍%何奉朋%李伶東
왕랑파%류신국%왕소군%하봉붕%리령동
安塞油田%致密复杂油藏%淡化系数模型%定量解释
安塞油田%緻密複雜油藏%淡化繫數模型%定量解釋
안새유전%치밀복잡유장%담화계수모형%정량해석
Ansai Oiffield%tight and complex reservoir%freshening factor model%quantitative interpretation
以安塞三叠系延长组长6油层为例,针对“三低”油层储层致密、孔喉半径小、泥质含量高、油水分异弱等特征和水淹机理复杂的矛盾,在多模型对比研究的基础上提出淡化系数饱和度解释模型,并确定出淡化系数校正因子D均值在0.25~0.3左右。利用新方法对研究区20口生产井进行对比解释,水淹级别解释符合率达到88.0%以上,产水率平均差异7.91%。此方法解释符合率较高,适应性较好,可以作为该区水淹层饱和度解释模型。
以安塞三疊繫延長組長6油層為例,針對“三低”油層儲層緻密、孔喉半徑小、泥質含量高、油水分異弱等特徵和水淹機理複雜的矛盾,在多模型對比研究的基礎上提齣淡化繫數飽和度解釋模型,併確定齣淡化繫數校正因子D均值在0.25~0.3左右。利用新方法對研究區20口生產井進行對比解釋,水淹級彆解釋符閤率達到88.0%以上,產水率平均差異7.91%。此方法解釋符閤率較高,適應性較好,可以作為該區水淹層飽和度解釋模型。
이안새삼첩계연장조장6유층위례,침대“삼저”유층저층치밀、공후반경소、니질함량고、유수분이약등특정화수엄궤리복잡적모순,재다모형대비연구적기출상제출담화계수포화도해석모형,병학정출담화계수교정인자D균치재0.25~0.3좌우。이용신방법대연구구20구생산정진행대비해석,수엄급별해석부합솔체도88.0%이상,산수솔평균차이7.91%。차방법해석부합솔교고,괄응성교호,가이작위해구수엄층포화도해석모형。
Taking Chang 6 oil layers of Yanchang Formation as an example, and on the basis of the comparative study of multiple models,the saturation interpretation model for freshening factors was proposed by "three -low" oil reservoirs with tight reservoir, small pore throat radius, high mudstone content, weak oil -water differentiation, and complex contra- diction of water - out mechanism. The mean value of dilution correction factor D was determined to be 0.25 - 0.3. The new method was utilized to carry out comparative interpretation in 20 production wells of the studied area. The coincidence rate of water - out degree is over 88% ,and the mean differential of water production rate is 7.91%. As a result of high coinci- dence rate of the interpretation and good adaptability, the method can be used as the saturation interpretation model for wa- ter flooded reservoirs in the studied area.