【摘要】：葡483區(qū)塊位于葡萄花油田主體構(gòu)造及其南部區(qū)域,平面上整體含油,縱向上主要含油層段位于扶一、扶二油層組,區(qū)內(nèi)探明石油地質(zhì)儲(chǔ)量388.29×104t,屬于典型的低孔低滲油田,注水開發(fā)不受效,單井產(chǎn)量低,有效開發(fā)動(dòng)用難度大。為了增加儲(chǔ)層滲流能力、提高單井產(chǎn)量,本文針對(duì)葡483區(qū)塊,進(jìn)行了直井細(xì)分層大規(guī)模縫網(wǎng)壓裂技術(shù)研究。文章綜合試油井、試采井產(chǎn)能分析及鄰近試驗(yàn)區(qū)動(dòng)態(tài)分析結(jié)果,結(jié)合經(jīng)驗(yàn)法及修正理論公式法,對(duì)葡483區(qū)塊產(chǎn)能進(jìn)行預(yù)測(cè),此時(shí)預(yù)測(cè)葡483區(qū)塊采油強(qiáng)度為0.25t/d·m,在此基礎(chǔ)上,針對(duì)葡483區(qū)塊儲(chǔ)層物性特征,結(jié)合鄰近區(qū)塊開發(fā)經(jīng)驗(yàn)及理論公式,首先確定了區(qū)塊合理的發(fā)開層系及開發(fā)開采方式,之后在對(duì)砂體控制程度進(jìn)行分析的基礎(chǔ)上,確定了井排方向及井距排距,并對(duì)井網(wǎng)適應(yīng)性進(jìn)行了分析,最終確定了區(qū)塊合理布井方案:新布井70口,其中首鉆井10口,緩鉆井9口(包括概念性設(shè)計(jì)4口水平井),正常井51口,井排方向?yàn)榻鼥|西向(NE70°左右),采用300m×120m菱形反九點(diǎn)井網(wǎng)注水開采。根據(jù)布井結(jié)果,初步預(yù)測(cè)葡483區(qū)塊扶余油層10年累計(jì)產(chǎn)油24.79×104t,采出程度為7.73%,綜合含水63.86%,在原油價(jià)格為80$/bbl時(shí),稅后財(cái)務(wù)內(nèi)部收益率為17.10%,投資回收期為6.40年,預(yù)測(cè)經(jīng)濟(jì)效益較高,開發(fā)效果達(dá)到較高水平,并且為相似區(qū)塊的開發(fā),提供了理論依據(jù)及實(shí)際指導(dǎo)。
[Abstract]:The Pu483 block is located in the main structure of Putaohua Oilfield and its southern region. It is oil-bearing in the plane, and the main oil-bearing section is located in Fuyi and Fuer formation longitudinally. the proved petroleum geological reserves in the area are 388.29 脳 104t, which belongs to a typical low porosity and low permeability oil field. Water injection development is not effective, single well production is low, effective development and production is difficult. In order to increase the seepage capacity of reservoir and increase the production of single well, the large-scale fracture pattern fracturing technology of straight well subdivision layer is studied in Pu483 block. In this paper, the productivity of block Portugal 483 is predicted by combining the results of productivity analysis of test wells, productivity analysis of test wells and dynamic analysis of adjacent test areas, combined with empirical method and modified theoretical formula method, and the oil recovery intensity of block Portugal 483 is predicted to be 0.25t/ d 路m. On this basis, according to the reservoir physical properties of block Portugal 483, combined with the development experience and theoretical formula of adjacent blocks, the reasonable formation system and exploitation mode of the block are determined at first, and then the control degree of sand body is analyzed. The well arrangement direction and spacing are determined, and the adaptability of the well pattern is analyzed. Finally, the reasonable well distribution scheme of the block is determined: 70 new wells, including 10 wells for the first drilling and 9 wells for slow drilling (including 4 horizontal wells with conceptual design). There are 51 normal wells with near east-west direction (NE70 擄). 300m 脳 120m rhomboid reverse nine-point well pattern is used for water injection. According to the well distribution results, it is preliminarily predicted that the cumulative oil production of Fuyu reservoir in Pu483 block is 24.79 脳 104t in 10 years, the recovery degree is 7.73%, and the comprehensive water cut is 63.86%. When the crude oil price is 80$/bbl, the after-tax financial internal rate of return is 17.10%. The payback period is 6.40 years, the predicted economic benefit is high, and the development effect reaches a high level, and provides the theoretical basis and practical guidance for the development of similar blocks.
【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)】：TE324
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本文編號(hào)：2487981