【摘要】：姚店北區(qū)賈409-賈256井區(qū)面積7.1km2,油水井300口,以長(zhǎng)6為主力產(chǎn)層,目前主要的問(wèn)題有:單井產(chǎn)能低(平均日產(chǎn)油196kg/d)、水淹/水竄現(xiàn)象嚴(yán)重(71口曾發(fā)生水淹水竄),以及部分水井注水困難。直面這些問(wèn)題,本次研究從小層劃分對(duì)比(劃分了4個(gè)油層段11個(gè)小層)開(kāi)始,進(jìn)行了長(zhǎng)6低滲儲(chǔ)層基質(zhì)特征研究;構(gòu)造、沉積相、儲(chǔ)層建筑結(jié)構(gòu)及非均質(zhì)特征研究;天然裂縫、微裂縫及人工裂縫特征研究。在大量動(dòng)態(tài)資料統(tǒng)計(jì)基礎(chǔ)上摸清了油田開(kāi)發(fā)狀況,進(jìn)行了油田主要注采矛盾分析及再辨析,弄清了研究區(qū)單井產(chǎn)能低、水淹/水竄現(xiàn)象嚴(yán)重,以及水井注水困難等開(kāi)發(fā)矛盾機(jī)理所在,并繪制了注采矛盾平面分布圖。為了進(jìn)一步深化認(rèn)識(shí),進(jìn)行了油水運(yùn)動(dòng)規(guī)律研究,計(jì)算了剩余油分布圖。通過(guò)以上綜合研究,本文有針對(duì)性地提出了開(kāi)發(fā)調(diào)整技術(shù)對(duì)策,包括井網(wǎng)、開(kāi)發(fā)層位、注水制度、措施類型優(yōu)選(例選了具體單井及層位)等多方面的調(diào)整,以及其它一些調(diào)整如調(diào)驅(qū)調(diào)剖、堵水、改變巖石潤(rùn)濕性等。甚至提出了非常規(guī)調(diào)整對(duì)策試驗(yàn),即在研究區(qū)開(kāi)辟小塊區(qū)域,進(jìn)行(縫網(wǎng)+暫堵段塞)壓裂+開(kāi)發(fā)后期潤(rùn)濕反轉(zhuǎn)吞吐開(kāi)采試驗(yàn)。
[Abstract]:The area of Jia409-Jia 256 well area in Yadian North District is 7.1 km2, with 300 oil and water wells, with Chang 6 as the main production zone. At present, the main problems are: low productivity of single well (average daily oil production 196kg/d), The phenomenon of water-flooding / water-channeling is serious (71 wells have occurred water-flooded channeling) and some wells are difficult to inject water. At the beginning of this study, the matrix characteristics of Chang 6 low permeability reservoir, structure, sedimentary facies, reservoir architecture and heterogeneity were studied. Study on the characteristics of natural cracks, microcracks and artificial fractures. Based on the statistics of a large number of dynamic data, the present situation of oilfield development is found out, and the contradiction analysis and discrimination of the main injection and production in the oilfield are carried out. It is clear that the single well productivity is low and the phenomenon of water flooding / water channeling is serious in the study area. And the development contradiction mechanism of water injection is difficult, and the plane distribution map of injection-production contradiction is drawn. In order to deepen the understanding, the oil and water movement law was studied, and the remaining oil distribution map was calculated. Based on the above comprehensive research, this paper puts forward the technical countermeasures of development adjustment, including well pattern, development horizon, water injection system, optimal selection of measure types (such as selecting specific single well and horizon), and so on. And other adjustments such as profile control, water shutoff, change rock wettability and so on. Even the unconventional adjustment countermeasure test is put forward, that is, to open up a small area in the study area, and to carry out wetting inversion huff and puff production test in the later stage of fracturing development.
【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)】：TE34

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本文編號(hào)：2376013