长岭地区营城组火山岩储层参数分布规律  

Distribution rule of reservoir parameters of volcanics rock in Yingcheng Formation of Changling Area

作　　者：王英伟[1] 潘保芝[1] 王满[2] 张建民[3] 邢艳娟[3] 石丹红[3] 

机构地区：[1]吉林大学地球探测科学与技术学院,吉林长春130026 [2]吉林大学地球科学学院,吉林长春130061 [3]大庆钻探工程公司测井二公司,吉林松源138000

出　　处：《断块油气田》2010年第2期134-137,共4页Fault-Block Oil & Gas Field

基　　金：国家科技重大专项"复杂油气田地质与提高采收率技术"(2008ZX05009-001)资助

摘　　要：根据松辽盆地长岭地区营城组火山岩在凹陷地层中的分布位置,将其划分为凸起带、凹陷带和斜坡带。基于128个岩心实验的孔隙度和渗透率数据、181个薄片的岩性和孔隙度数据及18口井的测井曲线资料,分析研究不同构造位置的火山岩储层特征,结果表明斜坡带储层具有中等—大孔隙,岩心实测孔隙度为1%～23%,测井计算孔隙度为9%～20%,属于中等储层,局部出现较好储层;凸起带储层具有中至小孔隙,岩心实测孔隙度为0.1%～12%,测井计算平均孔隙度为6%左右;凹陷带储层具有小孔隙,岩心实测孔隙度为0.1%～6.1%,测井计算平均孔隙度为3%左右,属于无价值储层或差储层。在同一构造位置,中酸性火山岩的孔隙度高于酸性火山岩孔隙度,断裂密集带的孔隙度最大。因此,研究区火山岩勘探的有力目标为位于构造斜坡带且断裂发育的中酸性火山岩储层。According to the distribution location of volcanic rocks in Yingcheng Formation of Changling Area in Songliao basin, the location of volcanic rocks can be classified into uplift belt, depression belt and slope belt. The reservoir characteristics of volcanic rock are analyzed for different structure locations based on the porosity and permeability data from 128 core samples, lithology and porosity data from 181 thin sections, analyses of logging curves from 18 wells. The analysis result shows that there are medium to big pores in the reservoirs of ramp belt. The measured core porosity is 1- 23% and the average porosity calculated by logging data is 9- 20%, belonging to medium reservoirs and emerging good reservoirs in regional area. The convex belt reservoirs have mostly medium to small pores. The measured （：ore porosity is 0.1-12% and the average porosity calculated by logging data is 6%. There are small pores in the depression belt. The measured core porosity is 0.1-6.1% and the average porosity calculated by logging data is 3%, belonging to worthless reservoirs or poor reservoirs. The porosity of medium-acidic volcanic rock is bigger than that of acidic volcanic rocks at same structural position, with the porosity maximum in faulting concentration zones. The medium-acidic volcanics reservoirs, which are located in the slope belt of structure and with the developed faulting, are the beneficial exploration zones in volcanic rocks in the area.

关 键 词：火山岩储层 岩性 储层参数 构造位置 斜坡带 

分 类 号：TE122.222[石油与天然气工程—油气勘探]