本文選題：壓裂水平縫 + 油藏�。� 參考：《西南石油大學》2015年碩士論文

【摘要】：在油氣的開采過程中,水力壓裂是提高油氣井產(chǎn)能的重要措施。在一些埋藏較淺的儲層以及異常高壓儲層水力壓裂容易產(chǎn)生水平縫。國內(nèi)外學者關(guān)于壓裂水平縫對油井產(chǎn)能的影響研究較少。已有方法存在針對性不足和求解過程復雜的問題。 近年來,隨著計算機軟硬件技術(shù)和數(shù)值模擬技術(shù)的發(fā)展,人們可以模擬越來越復雜的油田地質(zhì)特征,模擬精度也越來越高。本文將傳統(tǒng)的產(chǎn)能評價方法和數(shù)值模擬技術(shù)進行結(jié)合,基于數(shù)值模擬及水平縫相關(guān)理論,開展了以下研究工作：(1)壓裂水平縫的形成條件、形態(tài)特征及帶壓裂水平縫儲層中流體滲流特征；(2)壓裂水平縫數(shù)值模擬相關(guān)技術(shù)；(3)地層滲透率各向異性、地層寬高比、支撐劑量、裂縫垂向位置及裂縫形態(tài)等因素對帶裂縫油井產(chǎn)能的影響；(4)衰竭式開發(fā)中不同地質(zhì)及施工條件下裂縫最佳尺寸和相應的油井產(chǎn)能；(5)當使用五點、九點或者七點井網(wǎng)進行注水開發(fā)時,不同性質(zhì)的水平縫對油井產(chǎn)能的影響。 通過綜合研究及分析,主要得出以下結(jié)論：(1)水力壓裂形成水平縫的深度由地應力條件決定,當?shù)貙討κ艿介_發(fā)因素的影響發(fā)生改變時,深度會相應的發(fā)生改變；(2)編制的網(wǎng)格生成程序可以高效的將壓裂模擬程序與油藏數(shù)值模擬程序進行銜接,彌補現(xiàn)有數(shù)值模擬器在網(wǎng)格生成方面的不足；(3)編制的計算不同條件下裂縫最佳尺寸(最大導流能力)和油井產(chǎn)能的程序具有在工程中應用的可行性；(4)對于低滲透地層,實施壓裂產(chǎn)生水平縫具有非常顯著的增產(chǎn)效果；(5)壓裂水平縫的形狀和角度對注水開發(fā)中油井產(chǎn)能有明顯影響；(6)對于實施過壓裂增產(chǎn)并且裂縫為水平縫的地層,在注水開發(fā)前需要監(jiān)測裂縫形狀及方位,對于裂縫性質(zhì)不同的地層,選用合適的井網(wǎng)能有效的提高開采效率。
[Abstract]:Hydraulic fracturing is an important measure to improve the productivity of oil and gas wells in the process of oil and gas production. In some shallow reservoirs and abnormal high pressure reservoirs hydraulic fracturing is easy to produce horizontal fractures. There is little research on the effect of horizontal fracturing fracture on well productivity at home and abroad. The existing methods have shortcomings in pertinence and complexity in the process of solving them. In recent years, with the development of computer software and hardware technology and numerical simulation technology, people can simulate more and more complex geological characteristics of oil field, and the simulation accuracy is becoming higher and higher. In this paper, the traditional productivity evaluation method and numerical simulation technology are combined. Based on the theory of numerical simulation and horizontal fracture correlation, the following research work is carried out on the formation conditions of horizontal fracturing fracture. Morphological characteristics and fluid percolation characteristics in reservoirs with fracturing horizontal fractures A correlation technique for numerical simulation of fracturing horizontal fractures, I. e., anisotropy of formation permeability, ratio of formation width to height, support dose, Effect of fracture Vertical position and fracture form on production capacity of well with fractures (No. 4) the optimum size of fractures and the corresponding production capacity of oil wells under different geological and construction conditions should be used at five points. The effect of horizontal fractures of different properties on well productivity when water injection is carried out in nine or seven spot pattern. Through comprehensive research and analysis, the following conclusions can be drawn: (1) the depth of horizontal fracture formed by hydraulic fracturing is determined by the stress condition in situ, and when the local layer stress is affected by the development factors, The mesh generation program can efficiently connect the fracturing simulation program with the reservoir numerical simulation program. To make up for the shortage of the existing numerical simulator in grid generation, the program for calculating the optimum fracture size (maximum flow conductivity) and well productivity under different conditions has the feasibility of application in engineering. For low permeability formations, The shape and angle of horizontal fracture have obvious influence on oil well productivity in water injection development. It is necessary to monitor the shape and orientation of fractures before the development of water injection. For the formations with different fracture properties, the selection of appropriate well pattern can effectively improve the production efficiency.
【學位授予單位】：西南石油大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TE328

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本文編號：1914863