断块油藏潜力分析及对策研究

现河采油厂断块油藏潜力分析及对策研究现河采油厂二零一四年二月现河采油厂14296,42%9317,28%9918,30%断块低渗稠油51.5,35%28.7,20%65.0,45%断块低渗稠油前言分油藏类型储量比重立体饼状图分油藏类型年产量比重立体饼状图现采厂1990-2013年分油藏类型储量曲线现采厂1986-2013年分油藏类型产量曲线现河断块油藏储量占比42.0%，产量占比45.0%，是采油厂可持续发展的主阵地。2312252402372242282462773053053103062872582382272102052001931901851821651601611601590.050.0100.0150.0200.0250.0300.0350.0198519871989199119931995199719992001200320052007200920112013断块低渗稠油1470500010000150002000025000300003500040000199019921994199619982000200220042006200820102012断块低渗稠油现河采油厂前言近年来，现河采油厂断块油藏动用储量基本无增长，年产油量持续下滑，油藏综合含水持续增加。至2013年，断块油藏年均含水达96.6%，已进入极端含水开发阶段。现河采油厂断块油藏开发基本情况12792131271359713879140111415614171142181421814240142781427814296120.3129.1125.5125.6119.2107.299.884.976.878.273.669.365.092.792.893.093.794.094.795.095.695.895.796.096.996.4动用储量年产油量年均含水现河采油厂0.050.0100.0150.0200.0250.0300.01976197819801982198419861988199019921994199619982000200220042006200820102012前言现河油区复杂断块油藏分阶段做法及采收率变化经过多个阶段的调整挖潜，水驱提高采收率难度越来越大。含水47.4%含水90.5%含水93.4%含水96.9%含水76.1%120万吨247万吨157万吨125万吨70万吨2007年2008年采收率43.5％提高1.6％采收率41.9％提高3.8％现河采油厂汇报提纲一、断块油藏地质及开发特点二、断块油藏分类治理主要做法三、断块油藏面临的难点及潜力四、断块油藏下步对策及规划部署现河采油厂（一）油藏地质特点南坡地区T4顶面构造图现河中带地区T2构造图现河地区共发育各级断层407条，这些断层切割成的断块有318个，其中大于1.0km2的只有34个，大部分断块小于0.2km2，平均每口井钻遇断点2.8个。其中中带地区主要是河125、河4大断层主控发育反向屋脊式断块群。南坡地区主要发育陈官庄、丁家屋子两大断阶带。断裂系统复杂、断层多、断块小现河南坡地区T4构造图现河中带地区东部近南北向地震剖面现河采油厂（一）油藏地质特点沉积类型多样，储层纵向含油井段长、平面连通性差，物性好、非均质性严重现河断块东三段为河流相沉积、沙一段为浅湖相沉积，沙二段主要发育了三角洲前缘河口坝和平原亚相分流河道沉积。含油井段1650-2800米。储层物性好，非均质性严重。孔隙度为20～31％，中高渗透，空气渗透率500～5000×10-3μｍ2，储层层间非均质严重，渗透率在层间和平面一般可相差4-13倍，渗透率变异系数一般0.5-0.8。沙二9梁家楼水下扇分现河庄油田河90断块S小层沉积微相图支河道分分分分支支支支河道河道河道河道侧缘侧缘侧缘侧缘侧缘侧缘侧缘沙二上三角洲平原亚相分流河道沙二下三角洲前缘河口坝S1-1-3-1414600041460004145000414500041440004144000206230002062300020624000206240002062500020625000206260002062600020627000206270002062800020628000H104H104-1H104-10H104-11H104-12H104-14H104-15H104-16H104-17H104-18H104-19H104-2H104-20H104-21H104-22H104-23H104-24H104-25H104-26H104-3H104-4H104-5H104-6H104-7H104-9H104-C12H104-C3H104-C4H104-C5H104-CX26H104-N5H104-X13H104-X26H104-X27H104-X28H104-X32H141-5H143-X65H143-X66H146-46H146-47H146-55H146-64H146-73H146-X48H148-20H148-22H148-29H148-44H148-47H148-48H148-56H148-76H148-82H148-X18H148-X19H148-X21H148-X23H148-X24H148-X26H148-X28H148-X45H148-X46H148-X53H148-X54H148-X55H148-X57H148-X70H148-X72H148-X74H151H152H159-X27H31-1H31-119H31-31H31-37H31-42H31-43H31-45H31-47H31-69H31-79H31-9H31-94H31-C79H31-X106H31-X108H31-X123H31-X27H31-X48H31-X64H31-X78H31-X81H31-X88H31-X92H31-X96H48H48-1H62H90H90-10H90-11H90-12H90-13H90-16H90-17H90-20H90-21H90-22H90-25H90-3H90-31H90-32H90-4H90-5H90-6H90-7H90-8H90-9H90-91H90-92H90-93H90-C5H90-C6H90-C8H90-C9H90-C92H90-CX14H90-CX18H90-CX94H90-P1H90-P2H90-X101H90-X14H90-X15H90-X18H90-X19H90-X23H90-X24H90-X26H90-X27H90-X28H90-X29H90-X30H90-X33H90-X91H90-X94HC104HCNX48HNX48滩脊滩砂滨浅湖泥岩沙一段为滨浅湖相滩坝砂现河采油厂（一）油藏地质特点断块油藏类型多样Ⅰ相对简单断块Ⅱ窄屋脊式断块Ⅲ复杂小断块构造简单规模整装断块储层单一简单规模断块多层河道窄屋脊式断块厚层河口坝窄屋脊断块构造储层双重复杂断块河86沙一3河60沙二上构造较简单、相对整装储量具有一定规模、含油面积》0.5km2，能形成面积注采井网储层非均质严重多为反向屋脊断块，内部断层少含油条带100-300ｍ；边底水能量较充足；◆构造复杂破碎、低序级断层发育◆储层发育不稳定、变化快◆油层分布零散、平均含油面积0.05＜S≤0.2km2反向屋脊式断块、内部断层少层厚5-15ｍ，反韵律为主含油条带窄100-300ｍ平均含油面积0.1《S《0.5km2◆构造较简单、相对整装◆储层发育稳定、相对单一◆含油面积》0.5km2河3南块河86断块沙一31东西向油藏剖面图河3断块沙二9-上稳南北向油藏剖面图河3-14河3-1河3-2河60断块沙二上东西向油藏剖面图通61断块沙二73王3-斜20断块南北向油藏剖面图通61断块沙一、二段南北向油藏剖面图王3-斜20沙二7现河采油厂197619781980198219841986198819901992199419961998200020022004200620082010201204008003873751051832973624525185955784645297327427708099539960200004000060000350260546804882116165305004019241393414983952745974441995018347833578475367652373510875393704000800022213482340837477763775960445299478340484026370634053488343628082144217118982040608010036.642.549.957.552.074.685.087.288.589.891.291.693.292.794.194.895.995.896.5100075050025003623032161691234655034164484716336507568289128879029169180200400192325226314415615615814215214716119217822230136602500050000750005293061500443264587105481975323233220581949613295193221687715974234692632527768396665043105010015020025072119120142208224240205182165148134122129126107857869010002000171734500932700133525555155140102409124653138000.510.130.450.670.450.260.330.480.550.520.480.280.430.330.330.400.490.530.770.93油井开井日液水平日油水平综合含水动液面水井开井日注水平年产油量动用储量月注采比开发简历（二）开发简历及现状稀井高产初期注水滚动增储高速开发以稀补稠强化挖潜精细开发控水稳油现河采油厂断块油藏开发历程现河采油厂油井总井：1545口油井开井：865口日液水平：50923吨日油水平：1595吨单井日液：61.3吨单井日油：1.9吨综合含水：96.9％采油速度：0.46%采出程度：39.9％可采程度：93.2％剩余速度：11.3％水井总井：554口水井开井：402口日注水平：47207方单井日注：117.4方月注采比：0.90累积注采比：0.53平均动液面：810米断块油藏2012-2013年12月开发曲线12-0112-0312-0512-0712-0912-1113-0113-0313-0513-0713-0913-118009001000450005000055000140016001800969798900800700300450360000.40.7182984584484785586988690286786285886946875484484974448855492525068252031515715085150333507485089716811803178116681688172317451697162015691506157696.496.396.496.696.696.696.696.796.896.997.096.98398408468248198328198168137978017953203233293293293333433453753864014133626434690338243414835446372793826638737440564595746109471510.700.600.600.600.700.700.700.700.800.800.800.901.822.22.12.22.22.12.12.12.12.01.91.91.81.9606460.061.565.762.461.361.762.361.762.662.5