【摘要】：儲層非均質(zhì)性是注水開發(fā)效果的重要影響因素之一,為了指導(dǎo)白蓮地區(qū)先導(dǎo)性水驅(qū)實(shí)驗(yàn),擬開展北部灣盆地白蓮構(gòu)造流一段儲層非均質(zhì)性研究,本文研究了白蓮地區(qū)流一段儲層本區(qū)的四性特征及其相互關(guān)系,建立了孔滲飽泥測井解釋模型,并通過建立的模型進(jìn)行了這四個參數(shù)的計算;建立了儲層流體判別圖版及儲層測井解釋標(biāo)準(zhǔn)從而確定了儲層分布特征;在測井解釋的基礎(chǔ)上對研究區(qū)的層內(nèi)、層間非均質(zhì)性以及隔夾層分布狀況進(jìn)行了研究。結(jié)果表明本區(qū)儲層以中孔-低滲為主;儲層流體判別圖版精度為80%;修正了一些一次解釋的結(jié)論,把測井解釋結(jié)果和試油結(jié)論作對比,表明儲層流體判別符合率為89.2%;儲層南東方向比較厚,北西方向比較薄;層內(nèi)非均質(zhì)程度主要為中-強(qiáng),正韻律模式普遍分布在各個不同層段的水下分流河道微相中;復(fù)合正韻律占比重較大,在水下分流河道發(fā)育的砂層組內(nèi)比較常見;反韻律模式主要出現(xiàn)在河口壩砂體和間灣中,占比小;復(fù)合反正韻律和復(fù)合正反韻律主要發(fā)育在水下分流河道中;0-1砂層組的層內(nèi)非均質(zhì)性顯示為弱;0-2、I-3、I-4、IV-9砂層組層內(nèi)非均質(zhì)性顯示為中等;II-5、II-6、III-7、III-8砂層組層內(nèi)非均質(zhì)性強(qiáng)。層間非均質(zhì)程度主要為中-強(qiáng);0-1、I-3、I-4、II-5砂層組層間非均質(zhì)性弱,0-2、II-6砂層組層間非均質(zhì)性中等,III-7、III-8、IV-9砂層組層間非均質(zhì)性強(qiáng)。夾層在0-2最發(fā)育,厚度為1-3米;隔層在0-2、I-4、II-5、II-6、III-7砂層組較發(fā)育,厚度大于5米。非均質(zhì)性是遠(yuǎn)離物源的方向非均質(zhì)性強(qiáng),離物源越近非均質(zhì)性越弱。建議層間非均質(zhì)性較強(qiáng)的儲層分層注水。
[Abstract]:Reservoir heterogeneity is one of the important influencing factors of water injection development. In order to guide the pilot water drive experiment in Bailian area, a study on reservoir heterogeneity of Bailian structural flow first member in Beibu Gulf Basin is proposed. In this paper, the four characteristics and their relationships of the reservoir area of the first member of flow in Bailian area are studied, the interpretation model of pore and permeability saturated mud logging is established, and the calculation of these four parameters is carried out through the established model. The reservoir fluid pattern and logging interpretation criteria are established to determine the reservoir distribution characteristics, and the distribution of interlayer heterogeneity and interlayer distribution in the study area are studied on the basis of log interpretation. The results show that the reservoir in this area is mainly medium porosity and low permeability, the accuracy of reservoir fluid discrimination chart is 80, some conclusions of one interpretation are revised, and the results of log interpretation and oil test are compared, which shows that the coincidence rate of reservoir fluid discrimination is 89. 2%. The reservoir is thicker in the south east direction and thinner in the north west direction, the heterogeneity in the layer is mainly medium to strong, and the positive rhythm pattern is generally distributed in the microfacies of the underwater distributary channel in different layers. The compound positive rhythm accounts for a large proportion and is more common in the sand formation developed in the underwater distributary channel, and the anti-rhythm pattern mainly appears in the sand body and the interbay of the estuarine dam, and the proportion is small. Compound back rhythm and compound positive and negative rhythm are mainly developed in underwater distributary channel, the heterogeneity of 0-1 sand formation is weak, the heterogeneity of 0-2 I-3 I-4 + IV-9 sand formation is moderate, the heterogeneity of 0-1 sand formation is weak, and the heterogeneity of 0-2 I-3 I-4 + IV-9 sand formation is moderate. The heterogeneity of II-5,II-6,III-7,III-8 sand formation is strong. The degree of interlayer heterogeneity was mainly medium to strong; The interlaminar heterogeneity of 0-1 I-3 + I-4 + II-5 sand formation is weak, the interlayer heterogeneity of 0-2 ~ (II-6) sand formation is moderate, and the interlayer heterogeneity of III-7,III-8,IV-9 sand formation is strong. The intercalation is the most developed in 0-2 with a thickness of 1-3 m, and the thickness of the interlayer is more than 5 m in the 0-2 I-4 + II-5 / II-6 / III-7 sand formation. Heterogeneity is the direction of strong heterogeneity away from the source, the closer the heterogeneity is, the weaker the heterogeneity is. It is suggested that stratified water injection in reservoirs with strong heterogeneity between layers should be carried out.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TE357.6

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