【摘要】：勝利油田樊162區(qū)塊屬于低孔、特低滲油藏,儲層物性差,具有較強的壓力敏感性,導(dǎo)致流體在地層中的流動阻力增大,油井日產(chǎn)量極低。此外,該區(qū)塊地層天然能量不足,注水開發(fā)時注水井吸水能力很差,即使注水壓力很高也往往難以見到注水效果,對油田的穩(wěn)定生產(chǎn)非常不利。目前,水力壓裂開采技術(shù)是開發(fā)特低滲透油藏常用的有效增產(chǎn)措施。但油井壓裂、特別是水平井壓裂產(chǎn)能規(guī)律認識不深給后期的配產(chǎn)及單井設(shè)計等帶來了一系列問題,因此研究低滲透油藏壓裂后油井的產(chǎn)能規(guī)律,有利于更好的認識和分析壓裂的效果。本文首先基于實際區(qū)塊的壓裂水平井?dāng)?shù)據(jù),建立了典型的油藏數(shù)值模擬模型,研究了油藏地質(zhì)參數(shù)、壓裂裂縫參數(shù)和壓敏效應(yīng)等對壓裂水平井產(chǎn)能的影響規(guī)律。在此基礎(chǔ)上,提出了一種新的產(chǎn)能預(yù)測公式,可預(yù)測不同參數(shù)組合的壓裂水平井在不同生產(chǎn)時間的日產(chǎn)油量。另外,基于樊162區(qū)塊投產(chǎn)初期的整體壓裂、五點注采井網(wǎng)的開發(fā)模式,建立了整體壓裂井組的概念模型,研究了油井裂縫參數(shù)、水井裂縫參數(shù)和井底壓力等參數(shù)對壓裂井產(chǎn)能的影響規(guī)律,并對油井裂縫和水井裂縫參數(shù)進行優(yōu)化。研究結(jié)果表明,整體壓裂、五點注采井網(wǎng)的油水井裂縫參數(shù)的最優(yōu)組合為油井的裂縫半縫長150m、油井的裂縫導(dǎo)流能力30μm2·cm、水井的裂縫半縫長100m、水井的裂縫導(dǎo)流能力40μm2·cm。應(yīng)用到實際模型中,結(jié)果顯示四口油井的產(chǎn)油量均得到了一定程度的提高,同時含水率有所下降,對現(xiàn)場具有一定的指導(dǎo)作用。
[Abstract]:Fan 162 block in Shengli Oilfield belongs to low porosity and very low permeability reservoir with poor physical property and strong pressure sensitivity, which results in the increase of fluid flow resistance in the formation and the extremely low daily production of oil well. In addition, the formation of this block is short of natural energy, the water absorption capacity of water injection wells is very poor, even if the water injection pressure is very high, it is often difficult to see the water injection effect, which is very unfavorable to the stable production of the oilfield. At present, hydraulic fracturing technology is commonly used to develop low-permeability reservoir production measures. But oil well fracturing, especially horizontal well fracturing, has brought a series of problems to the later production distribution and single well design, so the productivity law of oil wells after fracturing in low permeability reservoir is studied. It is helpful to understand and analyze the effect of fracturing. In this paper, a typical reservoir numerical simulation model is established based on the fracturing horizontal well data of the actual block, and the effects of reservoir geological parameters, fracturing fracture parameters and pressure sensitivity effects on the productivity of fractured horizontal wells are studied. On this basis, a new productivity prediction formula is proposed, which can predict the daily oil production of fracturing horizontal wells with different combinations of parameters at different production times. In addition, based on the development model of integral fracturing and five-point injection-production pattern at the initial stage of production in Fan 162 block, the conceptual model of integral fracturing well group is established, and the fracture parameters of oil well are studied. The effects of well fracture parameters and bottom hole pressure on the productivity of fracturing wells are studied. The fracture and well fracture parameters are optimized. The results show that the optimal combination of fracture parameters of five-point injection and production wells for integral fracturing is as follows: the fracture half fracture length of the well is 150m, the fracture diversion capacity of the well is 30 渭 m2 cm, well, the fracture half fracture length is 100m, and the fracture conductivity of the well is 40 渭 m2 cm.. The results show that the oil production of the four wells has been improved to a certain extent, and the water cut has been decreased, which has a certain guiding role to the field.
【學(xué)位授予單位】：中國石油大學(xué)(華東)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TE328;TE348

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