發(fā)布時(shí)間：2018-09-11 07:57

【摘要】：大慶薩爾圖油田南五區(qū)位于大慶長垣薩爾圖油田南部,區(qū)塊開發(fā)面積為12.0km2,地質(zhì)儲(chǔ)量6671.69×104t。本區(qū)塊屬于三角洲內(nèi)、外前緣相沉積,共分為8個(gè)油層組,30個(gè)砂巖組,98個(gè)小層,144個(gè)沉積單元。南五區(qū)二類油層主要集中在薩Ⅱ7-12與葡Ⅰ5+61-7砂巖段。區(qū)塊于1965年開始投入開發(fā),目前共有注入采出井779口,其中采出井457口,注入井322口。在綜合考慮提高聚合物驅(qū)開發(fā)效果與經(jīng)濟(jì)效益的基礎(chǔ)上,本文針對南五區(qū)二類油層發(fā)育特點(diǎn),結(jié)合區(qū)塊開發(fā)歷程,對南五區(qū)二類油層聚合物驅(qū)方案進(jìn)行了優(yōu)化設(shè)計(jì)。本文首先設(shè)計(jì)優(yōu)選了二類油層層系組合方案,確定了二類油層聚驅(qū)層系組合為薩Ⅱ7-12油層,目的層地質(zhì)儲(chǔ)量739.22×10~4t,其中有效厚度≥0.5m油層鉆遇砂巖厚度7.8m,有效厚度5.4m,地質(zhì)儲(chǔ)量600.35×10~4t。結(jié)合數(shù)值模擬及經(jīng)濟(jì)評價(jià)結(jié)果優(yōu)選了二類油開發(fā)布井方案,優(yōu)選了一套井距為125m的五點(diǎn)法面積井網(wǎng)的布井方式,共設(shè)計(jì)新鉆井621口,其中采出井335口,注入井286口。根據(jù)薩爾圖油田南部開發(fā)區(qū)聚合物分子量與有效滲透率的匹配關(guān)系圖版、注入壓力與注入速度關(guān)系公式等,優(yōu)化設(shè)計(jì)了二類油層聚合物分子量、聚合物溶液濃度、聚合物用量及注入速度,并對聚合物驅(qū)油優(yōu)化方案進(jìn)行了產(chǎn)能及開發(fā)效果預(yù)測,預(yù)計(jì)聚合物驅(qū)提高采收率10.44%。階段累積產(chǎn)油量95.40×104t,增加可采儲(chǔ)量62.68×10~4t。最后,對區(qū)塊開發(fā)監(jiān)測及方案實(shí)施要求進(jìn)行了設(shè)計(jì)。
[Abstract]:The south fifth area of Daqing Saertu Oilfield is located in the south of Daqing Changyuan Saltu Oilfield with a development area of 12.0km2 and geological reserves of 6671.69 脳 104t. The block belongs to delta and outer front facies, and is divided into 8 reservoirs, 30 sandstone formations, 98 sublayers and 144 sedimentary units. The second class reservoir of South Fifth area is mainly located in the sandstone member of sa 鈪，

本文編號：2236084