發(fā)布時(shí)間：2018-11-06 17:13

【摘要】：特低滲透油藏滲透率低、孔喉小,導(dǎo)致滲流能力低、產(chǎn)能低,在埋藏深、豐度低條件下,常規(guī)開(kāi)發(fā)效益差。仿水平井技術(shù)是將大型壓裂工藝技術(shù)與注采開(kāi)發(fā)井網(wǎng)相結(jié)合,通過(guò)“造長(zhǎng)縫、大井距”開(kāi)發(fā),提高儲(chǔ)量動(dòng)用率和采油速度,對(duì)特低滲透油藏的合理開(kāi)發(fā)具有重要意義。本文首先利用油藏?cái)?shù)值模擬方法,對(duì)仿水平井交錯(cuò)及正對(duì)井網(wǎng)的滲流機(jī)理、交錯(cuò)井網(wǎng)注水開(kāi)發(fā)及衰竭開(kāi)發(fā)的滲流機(jī)理進(jìn)行了對(duì)比分析,研究了仿水平井交錯(cuò)井網(wǎng)注水開(kāi)發(fā)的滲流階段及貢獻(xiàn)度,對(duì)比分析了仿水平井、水平井、直井開(kāi)發(fā)的滲流機(jī)理,并研究了非均質(zhì)性對(duì)仿水平井開(kāi)發(fā)滲流機(jī)理的影響;然后在滲流機(jī)理研究的基礎(chǔ)上,通過(guò)數(shù)據(jù)統(tǒng)計(jì)與油藏?cái)?shù)值模擬相結(jié)合的方法,對(duì)仿水平井實(shí)際區(qū)塊進(jìn)行開(kāi)發(fā)指標(biāo)規(guī)律分析;最后利用多元線性回歸、改進(jìn)的多元線性回歸方法,分別進(jìn)行了仿水平井開(kāi)發(fā)指標(biāo)預(yù)測(cè)模型的建立與校驗(yàn)完善,并對(duì)這兩種預(yù)測(cè)模型進(jìn)行了對(duì)比。研究結(jié)果表明:仿水平井交錯(cuò)井網(wǎng)相對(duì)于正對(duì)井網(wǎng)來(lái)說(shuō),波及系數(shù)更大、采出程度更高;仿水平井開(kāi)發(fā)存在近裂縫早期線性流、近裂縫擬徑向流、系統(tǒng)線性流三個(gè)主要的滲流階段,其中系統(tǒng)線性流階段的產(chǎn)能貢獻(xiàn)度達(dá)到95%以上;仿水平井交錯(cuò)井網(wǎng)開(kāi)發(fā)時(shí),剩余油主要分布于油井連線附近,是后期加密調(diào)整的重點(diǎn);利用改進(jìn)的多元線性回歸方法得到的指標(biāo)預(yù)測(cè)模型準(zhǔn)確度較高。研究成果可為致密砂巖特低滲油藏仿水平井開(kāi)發(fā)提供理論指導(dǎo)和技術(shù)支持。
[Abstract]:Low permeability and low pore throat lead to low percolation capacity and low productivity. Under the condition of deep buried depth and low abundance the conventional development benefit is poor. Horizontal well imitating technology is a combination of large fracturing technology and injection-production development well pattern. It is of great significance to reasonable development of ultra-low permeability reservoir by "making long fractures and long well spacing" to improve the production rate of reserves and oil recovery rate. In this paper, by using reservoir numerical simulation method, the percolation mechanism of horizontal well pattern and vertical well pattern, the seepage mechanism of cross well pattern water injection development and failure development are compared and analyzed. The percolation stage and contribution of horizontal well pattern in horizontal well pattern are studied. The seepage mechanism of horizontal well and vertical well development is compared and analyzed, and the influence of heterogeneity on the seepage mechanism of horizontal well development is studied. Then on the basis of the study of percolation mechanism, through the combination of data statistics and reservoir numerical simulation, the development index law of the actual horizontal well block is analyzed. Finally, by using multivariate linear regression and improved multivariate linear regression method, the prediction model of horizontal well development index is established and verified, and the two prediction models are compared. The results show that the cross well pattern of horizontal well is larger in sweep coefficient and higher in recovery degree than that in positive pattern. There are three main percolation stages in the development of imitating horizontal wells: early linear flow near fracture, quasi-radial flow near fracture and linear flow in the system, in which the productivity contribution of system linear flow is more than 95%. In the development of horizontal well pattern, the remaining oil is mainly distributed near the oil well line, which is the emphasis of later infilling adjustment, and the accuracy of the index prediction model obtained by the improved multivariate linear regression method is high. The research results can provide theoretical guidance and technical support for the development of horizontal wells in tight sandstone ultra-low permeability reservoirs.
【學(xué)位授予單位】：中國(guó)石油大學(xué)(華東)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TE312

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 袁淋;李曉平;張璐;杜連龍;孫飛;;水平井穩(wěn)態(tài)產(chǎn)能公式對(duì)比與分析[J];巖性油氣藏;2013年06期

2 劉偉平;賀國(guó)偉;董林;;長(zhǎng)慶低滲透儲(chǔ)層安全環(huán)保石油壓裂技術(shù)[J];中國(guó)石油和化工標(biāo)準(zhǔn)與質(zhì)量;2013年08期

3 李菊紅;;仿水平井開(kāi)發(fā)技術(shù)在特低滲透油藏的應(yīng)用[J];中小企業(yè)管理與科技(下旬刊);2012年01期

4 李春芹;;水平井分段壓裂在特低滲透油藏開(kāi)發(fā)中的應(yīng)用[J];西南石油大學(xué)學(xué)報(bào)(自然科學(xué)版);2011年06期

5 張繼風(fēng);田曉東;郭瑋琪;王天智;;水驅(qū)油田含水上升規(guī)律探討及其應(yīng)用[J];鉆采工藝;2011年03期

6 黃廣恩;;仿水平井壓裂技術(shù)在樊142塊的應(yīng)用[J];內(nèi)蒙古石油化工;2011年04期

7 蘭麗鳳;白振強(qiáng);于德水;霍正旺;;曲流河砂體三維構(gòu)型地質(zhì)建模及應(yīng)用[J];西南石油大學(xué)學(xué)報(bào)(自然科學(xué)版);2010年04期

8 王明;朱維耀;;低滲透油藏五點(diǎn)井網(wǎng)壓裂產(chǎn)能計(jì)算及其影響因素[J];油氣地質(zhì)與采收率;2010年03期

9 龐陵;馬莉;鄧麗君;;國(guó)內(nèi)外已開(kāi)發(fā)儲(chǔ)量的可采儲(chǔ)量計(jì)算方法分析研究[J];內(nèi)蒙古石油化工;2010年06期

10 馬志欣;賈增強(qiáng);葉小闖;魏千盛;;蘇里格氣田單井控制儲(chǔ)量計(jì)算方法研究[J];石油化工應(yīng)用;2010年Z1期

相關(guān)碩士學(xué)位論文 前3條

1 湯曉威;低滲油藏仿水平井注采井網(wǎng)滲流規(guī)律及優(yōu)化研究[D];中國(guó)石油大學(xué)(華東);2014年

2 劉艷霞;低滲油藏滲流模型求解方法研究及其應(yīng)用[D];中國(guó)石油大學(xué);2009年

3 蘇建;水平井壓裂優(yōu)化設(shè)計(jì)[D];中國(guó)石油大學(xué);2009年

，

本文編號(hào)：2314927