本文選題：致密氣藏 + 體積壓裂�。� 參考：《中國(guó)科學(xué)院研究生院(滲流流體力學(xué)研究所)》2015年碩士論文

【摘要】：致密氣是目前現(xiàn)實(shí)性最好的非常規(guī)天然氣,將成為我國(guó)天然氣工業(yè)快速穩(wěn)定發(fā)展的重要資源。而致密氣主要賦存于低孔、低滲的致密砂巖中,需要通過(guò)壓裂改造技術(shù)才能獲得工業(yè)氣流。目前體積壓裂通過(guò)全面改造儲(chǔ)層和增大滲流面積成為開(kāi)發(fā)致密氣藏的有效手段。但在壓裂過(guò)程中,壓裂液在改善油氣滲流通道的同時(shí)也給儲(chǔ)層帶來(lái)了各種各樣的傷害。本文通過(guò)室內(nèi)物理模擬實(shí)驗(yàn),對(duì)某地區(qū)的致密氣藏儲(chǔ)層巖心進(jìn)行了研究,不僅得到了壓裂液對(duì)致密氣藏儲(chǔ)層的傷害機(jī)理,還得到了不同擠入液量對(duì)壓裂液傷害機(jī)理的影響,以及不同反排階段的主要傷害機(jī)理,這對(duì)壓裂液在實(shí)際過(guò)程中的應(yīng)用以及對(duì)壓裂液配方的優(yōu)化,具有一定的指導(dǎo)作用。1、通過(guò)X衍射、掃描電鏡和恒速壓汞實(shí)驗(yàn),對(duì)目標(biāo)儲(chǔ)層地質(zhì)特征進(jìn)行了研究。研究結(jié)果表明,目標(biāo)儲(chǔ)層巖心具有普遍孔隙不發(fā)育和少量粒間孔隙等特征,此外,粘土礦物的含量總體來(lái)說(shuō)中等,主要膠結(jié)物是高嶺石,其他的粘土礦物相對(duì)較少,另外,目標(biāo)儲(chǔ)層有效喉道半徑很小。2、通過(guò)常規(guī)驅(qū)替實(shí)驗(yàn)和核磁共振技術(shù),采用平行樣比對(duì)方法,定量分析了水敏傷害與粘土吸水量的相關(guān)關(guān)系,水鎖傷害與壓裂液滯留量的相關(guān)關(guān)系,以及水敏、水鎖和固相傷害的動(dòng)態(tài)變化規(guī)律。研究結(jié)果表明,水敏和固相傷害是不可逆不可恢復(fù)的傷害,而水鎖傷害是一個(gè)動(dòng)態(tài)變化的過(guò)程,氣相反排初期水鎖傷害很大,隨著反排孔隙體積的增加,水鎖傷害得到了很好的解除,最終的水鎖傷害很小。3、通過(guò)常規(guī)驅(qū)替實(shí)驗(yàn),以及平行樣比對(duì)方法,研究了不同擠入液量(1、5、10PV)對(duì)水敏傷害、水鎖傷害和固相基質(zhì)傷害的影響。研究結(jié)果表明,擠入液量的大小對(duì)水鎖傷害的影響很小,對(duì)固相傷害幾乎沒(méi)有影響,而對(duì)水敏傷害的影響很大。一開(kāi)始水鎖傷害是反排初期的主要傷害,但隨著擠入液量的增加,水敏傷害增大明顯,水敏和水鎖傷害共同成為初期的主要傷害；在反排后期,水敏傷害一直是主要的傷害機(jī)理。
[Abstract]:Dense gas is the best unconventional natural gas in reality at present and will become an important resource for the rapid and stable development of natural gas industry in China. The dense gas mainly occurs in the tight sandstone with low porosity and low permeability, so it is necessary to obtain industrial airflow by fracturing technology. At present, volume fracturing is an effective way to develop tight gas reservoir by comprehensively reforming reservoir and increasing percolation area. However, in the process of fracturing, fracturing fluid not only improves the flow path of oil and gas, but also brings various kinds of damage to reservoir. In this paper, through laboratory physical simulation experiments, the core of tight gas reservoir in a certain area is studied. Not only the damage mechanism of fracturing fluid to tight gas reservoir is obtained, but also the influence of different amount of squeeze fluid on the damage mechanism of fracturing fluid is obtained. And the main damage mechanism of different backflow stages, which has certain guiding effect on the application of fracturing fluid in the actual process and the optimization of fracturing fluid formula, through X-ray diffraction, scanning electron microscope and constant speed mercury pressure experiment. The geological characteristics of the target reservoir are studied. The results show that the core of the target reservoir is characterized by a general lack of pores and a small amount of intergranular pores. In addition, the content of clay minerals is generally medium, the main cementation is kaolinite, the other clay minerals are relatively few, in addition, The effective throat radius of target reservoir is very small. By conventional displacement experiment and nuclear magnetic resonance technique, the correlation between water sensitive damage and clay water absorption and the relationship between water lock damage and fracturing fluid retention are quantitatively analyzed by parallel sample comparison method. And the dynamic changes of water sensitivity, water lock and solid phase damage. The results show that water sensitivity and solid phase damage are irreversible and irrecoverable damage, while water lock damage is a dynamic process. In the initial stage of gas reverse discharge, the water lock damage is very large, and with the increase of anti-discharge pore volume, The water lock injury was well relieved, and the final water lock injury was very small. The effects of water sensitive injury, water lock injury and solid matrix injury on water sensitive injury, water lock injury and solid phase matrix injury were studied by conventional displacement experiment and parallel sample comparison method. The results show that the amount of water squeeze has little effect on the damage of water lock, but has little effect on the damage of solid phase, but has great effect on the damage of water sensitivity. At first, the water lock injury was the main injury in the initial stage of reverse discharge, but with the increase of the amount of water, the water sensitive injury increased obviously, and the water sensitive injury and the water lock injury became the main injury in the initial stage, but in the later stage of reverse discharge, the water sensitive injury increased obviously. Water sensitive injury has always been the main injury mechanism.
【學(xué)位授予單位】：中國(guó)科學(xué)院研究生院(滲流流體力學(xué)研究所)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TE377

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 肖立志;;我國(guó)核磁共振測(cè)井應(yīng)用中的若干重要問(wèn)題[J];測(cè)井技術(shù);2007年05期

2 李太偉;周繼東;金智榮;王進(jìn)濤;張華麗;;壓裂液對(duì)儲(chǔ)層傷害的核磁共振技術(shù)評(píng)價(jià)方法[J];重慶科技學(xué)院學(xué)報(bào)(自然科學(xué)版);2014年06期

3 陳剛;陳越;申太志;;鄂爾多斯盆地吳倉(cāng)堡油田長(zhǎng)9儲(chǔ)層敏感性評(píng)價(jià)及應(yīng)對(duì)策略[J];內(nèi)蒙古石油化工;2012年21期

4 石華強(qiáng);丁雅勤;丁里;李小玲;呂小明;尹曉宏;;蘇里格氣田東區(qū)氣藏壓裂液傷害機(jī)理分析及對(duì)策[J];石油天然氣學(xué)報(bào);2013年06期

5 白小霞;吳建彪;王天龍;;定邊油田長(zhǎng)2儲(chǔ)層敏感性分析[J];內(nèi)蒙古石油化工;2014年08期

6 程秀梅;;呂家莊油田A區(qū)塊阜二段儲(chǔ)層速敏水敏特征[J];油氣藏評(píng)價(jià)與開(kāi)發(fā);2014年05期

7 林光榮,邵創(chuàng)國(guó),徐振鋒,王小林,王力;低滲氣藏水鎖傷害及解除方法研究[J];石油勘探與開(kāi)發(fā);2003年06期

8 王為民,郭和坤,孫佃慶,張盛宗;用核磁共振成像技術(shù)研究聚合物驅(qū)油過(guò)程[J];石油學(xué)報(bào);1997年04期

9 楊兆中,李允,徐向榮,唐勝倫,唐炳軍;低滲致密裂縫性氣藏整體壓裂模擬模型的建立與求解[J];天然氣工業(yè);2001年05期

10 趙振峰,趙文,何治武,丁里,李建山,尹曉宏;低壓低滲氣藏傷害因素分析及對(duì)策探討[J];天然氣工業(yè);2005年04期

相關(guān)碩士學(xué)位論文 前1條

1 蔡劍華;壓裂液微觀傷害的核磁共振實(shí)驗(yàn)研究[D];中國(guó)科學(xué)院研究生院（滲流流體力學(xué)研究所）;2005年

，

本文編號(hào)：1835592