【摘要】：我國(guó)相繼在西部的塔里木、大慶、河南、遼河等地致密砂巖獲高產(chǎn)油氣流,證實(shí)了我國(guó)的致密砂巖儲(chǔ)層的油氣資源潛力是巨大的。遼河油田在七十年代初期就提出并開(kāi)始加強(qiáng)致密砂巖的勘探工作以尋找新的油氣藏,如雙臺(tái)子和牛居地區(qū)的致密砂巖勘探等現(xiàn)已初具規(guī)模。目前,致密砂巖的油氣勘探工作的范圍正逐年擴(kuò)大,隨著工作的深入對(duì)致密砂巖油氣藏的類型、油氣藏的生、貯、蓋等都有了一定的了解。而且在大民屯地區(qū)致密砂巖的油氣勘探成效顯著,儲(chǔ)層類型多,單井產(chǎn)量高,證明該區(qū)致密砂巖具有很大的油氣勘探潛力,因此擴(kuò)大致密砂巖勘探的范圍、加強(qiáng)并提高致密砂巖油氣的認(rèn)識(shí)是必要的。本文中引進(jìn)了儲(chǔ)層品質(zhì)指數(shù)及裂縫孔隙度,并結(jié)合陣列感應(yīng)、核磁和陣列聲波等測(cè)井新技術(shù)來(lái)對(duì)沙四致密儲(chǔ)層的儲(chǔ)集性能、含油氣情況等進(jìn)行評(píng)價(jià)。最終,結(jié)合工區(qū)油藏綜合地質(zhì)特征研究以及本問(wèn)所建立建立的油氣層識(shí)別標(biāo)準(zhǔn)和儲(chǔ)層參數(shù)解釋模型的基礎(chǔ)上,開(kāi)展測(cè)井二次精細(xì)處理解釋,研究工區(qū)內(nèi)油氣水分布規(guī)律。應(yīng)用本文所提出的方法,首先對(duì)研究區(qū)重點(diǎn)井進(jìn)行了二次評(píng)價(jià),綜合分析測(cè)井資料和試油數(shù)據(jù)可知,位于該前進(jìn)構(gòu)造帶高部位新前601——L7井一線所部井沙四段砂體儲(chǔ)層較發(fā)育,儲(chǔ)層物性較差,但含油性較好,屬低孔低滲儲(chǔ)層;該區(qū)油藏類型為構(gòu)造巖性油氣藏,油氣分布規(guī)律受前進(jìn)大斷層和巖性特征所控制,在靠近前進(jìn)大斷層的高部位和巖性好的油氣富集。L257塊沙四上段以泥巖為主,局部加砂礫巖、粉砂巖,厚度一般為200—500米,下段以厚層塊狀凝灰質(zhì)角礫巖、淺灰色砂礫巖、細(xì)砂為特征,厚度一般為300-600米,其中所含碎屑巖為沙四段主要含油砂體。通過(guò)對(duì)研究區(qū)塊內(nèi)鉆達(dá)沙四的185口井測(cè)井資料二次解釋評(píng)價(jià),建立了油氣水層的電性解釋標(biāo)準(zhǔn),提高了解釋精度。
[Abstract]:In Tarim, Daqing, Henan and Liaohe regions in the west of China, high oil flow has been obtained in dense sandstone, which proves that the oil and gas resource potential of tight sandstone reservoir in China is great. Liaohe Oilfield proposed and started to strengthen the exploration of tight sandstone in the early seventies to find new oil and gas reservoirs, such as the dense sandstone exploration in Shuangtaizi and Niuju areas, which has begun to take shape. At present, the scope of oil and gas exploration of tight sandstone is expanding year by year. With the development of the work, there is a certain understanding of the types, generation, storage and cap of tight sandstone reservoirs. Moreover, in Damingtun area, the oil and gas exploration results of tight sandstone are remarkable, there are many reservoir types, and the single well production is high, which proves that the compact sandstone in this area has great oil and gas exploration potential, so the scope of tight sandstone exploration is expanded. It is necessary to strengthen and improve the understanding of tight sandstone oil and gas. In this paper, the reservoir quality index and fracture porosity are introduced, and new logging techniques such as array induction, nuclear magnetic field and array acoustic wave are combined to evaluate the reservoir performance, oil and gas content of the tight reservoir of Sha 4. Finally, based on the study of the comprehensive geological characteristics of the reservoir in the working area and the oil and gas reservoir identification standard and the reservoir parameter interpretation model established by this paper, the secondary fine processing interpretation of logging is carried out to study the distribution of oil, gas and water in the working area. Using the method proposed in this paper, the second evaluation of the key wells in the study area is first carried out, and the log data and the test data are analyzed synthetically. The sand body reservoir of Sha 4 member in the first line of 601--L7 well located in the high part of the forward structural belt is relatively developed, the reservoir physical property is poor, but the oil content is better, so it belongs to low porosity and low permeability reservoir. The reservoir type in this area is structural lithologic reservoir. The distribution of oil and gas is controlled by the advance fault and lithologic characteristics. The reservoir is enriched in the high position and good lithologic oil and gas near the great advancing fault. The upper part of Sha 4 in block L257 is dominated by mudstone, and the local sand gravel is added. The siltstone is usually 200-500 meters thick, and the lower part is characterized by thick layer massive tuffaceous breccia, light gray gravelly rock, fine sand, and the thickness is generally 300-600 meters. The clastic rock contained in the siltstone is the main oil-bearing sand body in the fourth member of Shahejie formation. Based on the secondary interpretation and evaluation of 185 logging data of Dasha 4 in the study block, the electrical interpretation standard of oil-gas and water reservoir is established and the interpretation accuracy is improved.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：P618.13

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