本文選題：孤東油田九區(qū) + 降解稠油��； 參考：《長(zhǎng)江大學(xué)》2015年碩士論文

【摘要】：為優(yōu)化生產(chǎn),許多生產(chǎn)開發(fā)井是兩個(gè)或多個(gè)油層混合開采的,弄清楚每個(gè)單油層對(duì)多層合采井的產(chǎn)量貢獻(xiàn)比例,并動(dòng)態(tài)監(jiān)測(cè)石油產(chǎn)量隨開采時(shí)間的變化、監(jiān)測(cè)油井生產(chǎn)動(dòng)態(tài)、對(duì)油藏進(jìn)行分層管理、識(shí)別是否有油井槽竄或邊水突進(jìn)等現(xiàn)象,對(duì)于油田制定調(diào)整開發(fā)方案、優(yōu)化油田管理具有重要意義。對(duì)重質(zhì)稠油兩層合采井,通常無法實(shí)施常規(guī)產(chǎn)液剖面測(cè)井,另外稠油因生物降解,正構(gòu)烷烴的損失,用色譜指紋法研究稠油油藏合采井單層產(chǎn)能貢獻(xiàn)又有一定局限性。而稠油中芳烴化合物保存相對(duì)完整,本文以孤東油田九區(qū)Ng55、Ng61兩小層稠油合采井為例,通過實(shí)驗(yàn)室內(nèi)對(duì)兩單層稠油進(jìn)行不同比例配比,應(yīng)用全油色譜-質(zhì)譜分析,篩選芳烴參數(shù),計(jì)算合采井的單層產(chǎn)能貢獻(xiàn)比例。研究發(fā)現(xiàn)孤東油田九區(qū)原油樣品受到生物降解,正構(gòu)烷烴損失,姥鮫烷與植烷凸顯,含有一定量的β-胡蘿卜烷；三環(huán)萜烷的相對(duì)含量較低,C23-三環(huán)萜烷相對(duì)豐度較高,C19-C21-C23-三環(huán)萜烷呈上升型；在藿烷系列中,C29藿烷豐度低于C30藿烷,伽馬蠟烷與其它化合物共逸出峰,Ts略高于Tm,含有很高的25-降藿烷,原油遭到6-7級(jí)生物降解且可能為兩期原油；ααα20RC27-ααα20RC28-ααα20RC29規(guī)則甾烷構(gòu)型為“V”字型,C29豐度低于C27；芳烴分布呈現(xiàn)單峰前峰型,以三環(huán)及二環(huán)化合物為主,蒽的含量很少,檢測(cè)出熒蒽、芘等化合物。1,2,5-/1,3,6-三甲基萘比值在0.87-6.27之間,2,3,6-三甲基萘/(2,3,6+1,2,5)-三甲基萘比值介于0.27-0.50,1,3,6,7-四甲基萘/(1,3,6,7+1,2,5,6)-四甲基萘比值介于0.25-0.43,MPI1值介于0.10-0.84,Rc值介于0.45%-0.90%；三芴系列化合物中,芴系列化合物含量最高,二苯并噻吩/菲值約為0.15。綜上所述,孤東九區(qū)原油成熟度較高,母質(zhì)來源以陸源有機(jī)質(zhì)為主,同時(shí)有低等水生生物及藻類的貢獻(xiàn),沉積環(huán)境為淡水-微咸水湖相沉積環(huán)境。通過實(shí)驗(yàn)室內(nèi)配比實(shí)驗(yàn)及驗(yàn)證,發(fā)現(xiàn)(1,4,6-TMN+2,3,6-TMN)/1,2,5-TMN比值與混合油中端元油所占比例有非常好的線性相關(guān)性,R2高達(dá)0.992,配比原油的Ng61小層原油所占比例的實(shí)際值與計(jì)算值之間誤差小于5%；用同樣的色譜-質(zhì)譜分析條件分析了孤東九區(qū)來自Ng55、Ng61兩小層合采的G09-3N2、GOGDR2*18、 GOGDR3-1、GOGDR3-13、GOGDR4-1、GOGDR4-7、GOGDR4-207井稠油樣品,將各合采井原油的(1,4,6-TMN+2,3,6-TMN)/1,2,5-TMN比值投入到關(guān)系式中,求得各井Ng55、Ng61小層原油對(duì)產(chǎn)能的貢獻(xiàn)比例。其中GOGDR3-1、GOGDR3-13井原油中,Ng55小層幾乎已經(jīng)沒有貢獻(xiàn),原油主要來自Ng61小層,計(jì)算結(jié)果與研究區(qū)油層連通性較一致。另外通過配比實(shí)驗(yàn)還發(fā)現(xiàn)1,5-DMN的濃度與Ng61端元原油所占比例有最好的線性關(guān)系,R2高達(dá)0.984,實(shí)驗(yàn)室配比實(shí)驗(yàn)的Ng61小層原油所占比例的實(shí)際值與計(jì)算值之間誤差小于10%；但依據(jù)1,5-DMN的絕對(duì)濃度值計(jì)算的結(jié)果很不理想,GOGDR2*18井、GOGDR3-13井及GOGDR4-7井計(jì)算的Ng61小層所占比例都超過了100%,而GOGDR4-1井、GOGDR3-1、G09-3N2井Ng61小層所占比例與另一種方法的比較,發(fā)現(xiàn)有較大的差距,這可能與實(shí)驗(yàn)、積分、化合物在原油中的含量等因素有關(guān)。
[Abstract]:In order to optimize production , many production and development wells are mixed and mined by two or more oil reservoirs . It is clear that each single oil layer contributes to the production contribution ratio of multi - layer combined production wells . In addition , it is of great significance to monitor the production dynamics of oil wells and to optimize oilfield management .
The relative content of tricyclic terpanes is relatively low , the relative abundance of C23 - tricyclic terpanes is higher , and that of C23 - C23 - tricyclic terpanes is higher .
In the hopane series , the abundance of C29 - hopane is lower than that of C30 - hopane , gamma - wax and other compounds , Ts is slightly higher than Tm , contains very high 25 - norhopane , the crude oil is biodegraded by 6 - 7 stages and may be two - phase crude oil ;
偽偽偽20RC27 - 偽偽20RC28 - 偽偽20RC29 Regular sterane configuration is " V " and C29 abundance is lower than C27 ;
The ratio of 1 , 2 , 5 - / 1,3,6 - trimethylnaphthalene / ( 2,3,6 , 7 + 1 , 2 , 5 , 6 ) - tetramethylnaphthalene is between 0 . 27 - 0 . 50 , 1 , 3 , 6 - trimethylnaphthalene / ( 1,3,6 , 7 + 1 , 2 , 5 , 6 ) - tetramethylnaphthalene ratio is between 0 . 27 - 0 . 50 , 1 , 3 , 6 , 7 - tetramethylnaphthalene / ( 1,3,6 , 7 + 1 , 2 , 5 , 6 ) - tetramethylnaphthalene ratio is between 0 . 25 - 0 . 43 , the value of MPI1 is between 0.10 and 0.84 , Rc is between 0.45 % and 0.90 % ;
In this paper , the content of fluorene series compounds is the highest , the dibenzothiophenes / phenanthropy value is about 0.15 . In conclusion , the crude oil maturity in Gudong - nine region is higher , the source of parent material is mainly based on terrigenous organic matter , and the sedimentary environment is fresh water - brackish water lake facies sedimentary environment .
G09 - 3N2 , GOGDR2 * 18 , GOGDR3 - 1 , GOGDR3 - 13 , GOGDR3 - 1 , GOGDR3 - 13 , GOGDR4 - 1 , GOGDR4 - 7 and GOGDR4 - 207 were analyzed by the same chromatography - mass spectrometry .
However , according to the absolute concentration values of 1,5 - DMN , the proportion of the wells of GOGDR4 - 1 , GOGDR3 - 13 and GOGDR4 - 7 is more than 100 % , while the proportion of GOGDR4 - 1 , GOGDR3 - 1 and G09 - 3N2 well is compared with that of the other method .
【學(xué)位授予單位】：長(zhǎng)江大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TE328

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本文編號(hào)：2009481