【摘要】：油田開發(fā)中劃分層系是方案設(shè)計(jì)重要的方面,也是基礎(chǔ),是提高油田開發(fā)效果的重要途徑。周51井區(qū)位于陜西省志丹縣境內(nèi),具體位置是北至北至周46井,南到周118井,西起周93井,東抵周11井,控制范圍約為50km2。目前,本作業(yè)區(qū)內(nèi)有油井、探井等各類共129口。2000年開始對(duì)周51井區(qū)進(jìn)行油氣勘探,到2009年底共鉆井129口,其中探井1口,生產(chǎn)井128口。本次只針對(duì)長(zhǎng)6地層開展工作。具生、儲(chǔ)、蓋組合的地層厚度達(dá)1000~1500m,具備相當(dāng)巨大油氣開發(fā)潛力。本論文以志丹周51井區(qū)塊為研究對(duì)象,針對(duì)周51井區(qū)塊的巖石學(xué)特征、裂縫、孔隙結(jié)構(gòu)特征及油藏的非均質(zhì)性特征。研究按照延長(zhǎng)油礦統(tǒng)一劃分方案,對(duì)比過程中優(yōu)先選擇了自然電位曲線、自然伽馬,梯度電阻率及聲波時(shí)差曲線進(jìn)行綜合分析,尋找各級(jí)標(biāo)志層。根據(jù)地層劃分原則和方法及標(biāo)志層的特征,以測(cè)井曲線和鉆遇油砂體深度數(shù)據(jù)為基礎(chǔ),按沉積旋回所反映出測(cè)井曲線形態(tài)組合相似性,采取旋回對(duì)比、分級(jí)控制、考慮橫向相變的原則,對(duì)周51井區(qū)長(zhǎng)6油層組進(jìn)行了對(duì)比。方案結(jié)論預(yù)期2013-2014年為建產(chǎn)期,2013年周51井區(qū)單井產(chǎn)量1.9t/d,初始含水26.6%,年產(chǎn)油2.85×104t。預(yù)計(jì)到2027年(評(píng)價(jià)期15年),累計(jì)產(chǎn)油26.84×104t,含水72.36%,采出程度1.91%,作業(yè)期間最大的遞減率為11%,遞減率平均為7.5%,年采油速度平均為0.12%。
[Abstract]:The well area of Zhou51 is located in Zhidan County, Shaanxi Province. The specific location is well from north to Zhou46, well from south to Zhou118, well from west to Zhou93, well from east to Zhou11, and the control range is about 50 km 2. At present, there are oil wells in this operation area. There are 129 wells and other types of wells in Zhou51 well area. From 2000 to the end of 2009, 129 wells were drilled, including one exploration well and 128 production wells. This work is only aimed at Chang6 formation. The thickness of the formation with living, reservoir and cap assemblage is 1000-1500m, which has great potential for oil and gas development. According to the unified division scheme of Yanchang Oil Deposit, the natural potential curve, natural gamma ray, gradient resistivity and sonic time difference curve are selected as the priority for comprehensive analysis in the process of correlation, and the marker layers at all levels are found. On the basis of logging curves and depth data of drilled oil sands, and according to the similarity of logging curves reflected by sedimentary cycles, the principle of cyclic correlation, hierarchical control and transverse phase transformation are adopted to compare the Chang 6 reservoir group in Zhou51 well area. The single well production of Zhou51 well area in 2013 is 1.9 t/d, initial water cut is 26.6%, annual oil production is 2.85 x 104 t.
【學(xué)位授予單位】：西安石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：P618.13;TE34

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