稠油SAGD水平井完井管柱優(yōu)化研究
發(fā)布時(shí)間：2018-11-06 21:17
【摘要】：SAGD水平井技術(shù)以其見效快、熱能利用率高、采收率高和累計(jì)汽油比低等優(yōu)勢(shì)而被應(yīng)用于稠油開采領(lǐng)域,目前已成為開采稠油的主流技術(shù)。近年來,為提高SAGD水平井技術(shù)開發(fā)稠油的效率,國外對(duì)SAGD水平井完井管柱進(jìn)行了優(yōu)化,開展了長(zhǎng)水平段SAGD水平井大尺寸管柱完井和均衡注汽篩管完井的現(xiàn)場(chǎng)試驗(yàn)工作,SAGD水平井效益水平得到顯著提升。因此,借鑒國外已取得的技術(shù)進(jìn)步,針對(duì)國內(nèi)SAGD水平井完井技術(shù)開展優(yōu)化研究,對(duì)進(jìn)一步提升稠油生產(chǎn)效率具有重要意義。 本文以我國西部X油田SAGD水平井技術(shù)開發(fā)的主力稠油井區(qū)為研究對(duì)象,開展了SAGD水平井完井的優(yōu)化研究工作。根據(jù)其油藏地質(zhì)特征,采用數(shù)值模擬方法建立了三維地質(zhì)模型和井筒模型,模型能模擬SAGD水平井的生產(chǎn)和井筒內(nèi)壓力參數(shù)變化的情況,模擬計(jì)算了不同完井管柱下的井筒內(nèi)壓力、累計(jì)注汽量、累計(jì)產(chǎn)油量、累計(jì)SOR(汽油比)和蒸汽腔形狀。模擬結(jié)果發(fā)現(xiàn),現(xiàn)有的177.8mm篩管完井方式最優(yōu)水平段長(zhǎng)度為600m,如果水平段長(zhǎng)度大于1000m,常規(guī)完井管柱則不能滿足生產(chǎn)需要,反而會(huì)降低生產(chǎn)效率。因此,對(duì)長(zhǎng)水平段SAGD水平井完井管柱進(jìn)行了優(yōu)化,通過模擬計(jì)算分析完井管柱的長(zhǎng)度和尺寸對(duì)SAGD水平井產(chǎn)能的影響,得到不同水平段長(zhǎng)度與其對(duì)應(yīng)的不同完井管柱尺寸,177.8mm篩管完井管柱適應(yīng)的水平段長(zhǎng)度小于800m,219.1mm篩管完井管柱適應(yīng)的水平段長(zhǎng)度在800m至1000m之間,244.5mm篩管完井管柱適應(yīng)的水平段長(zhǎng)度大于1000m。為了進(jìn)一步提高SAGD水平井的生產(chǎn)效率,模擬預(yù)測(cè)了長(zhǎng)短水平段長(zhǎng)度下SAGD水平井均衡注汽篩管不同完井尺寸的生產(chǎn)效果。模擬結(jié)果顯示,均衡注汽篩管完井與常規(guī)完井相比生產(chǎn)效率提高了近40%,并且在長(zhǎng)水平段下可將完井管柱尺寸從244.5mm縮小到177.8mm。 通過本文的研究,提出了X油田稠油SAGD水平井完井管柱優(yōu)化方案,采用長(zhǎng)水平段、大尺寸完井管柱和均衡注汽篩管完井方法,可以提高X油田稠油SAGD水平井的開采效益。形成的稠油SAGD水平井完井管柱優(yōu)化方法,為今后國內(nèi)稠油油藏開發(fā)提供了理論依據(jù)。
[Abstract]:SAGD horizontal well technology has been used in the field of heavy oil production because of its advantages of fast efficiency, high thermal energy utilization, high recovery efficiency and low accumulative gasoline ratio, and has become the mainstream technology in heavy oil recovery. In recent years, in order to improve the efficiency of developing heavy oil by SAGD horizontal well technology, the completion string of SAGD horizontal well has been optimized in foreign countries, and the field test work of large-size string completion and balanced steam injection sieve pipe completion of long horizontal SAGD horizontal well has been carried out. The benefit level of SAGD horizontal well has been improved significantly. Therefore, it is of great significance to further improve the production efficiency of heavy oil by optimizing the SAGD horizontal well completion technology for reference to the technical progress made by foreign countries. This paper takes the main heavy oil well area developed by SAGD horizontal well technology in West X Oilfield of China as the research object and carries out the optimization research of SAGD horizontal well completion. According to the reservoir geological characteristics, the 3D geological model and the wellbore model are established by numerical simulation method. The model can simulate the production of SAGD horizontal well and the change of pressure parameters in the wellbore. The wellbore pressure, cumulative steam injection, cumulative oil production, cumulative SOR (gasoline ratio) and the shape of steam chamber under different completion string are simulated and calculated. The simulation results show that the optimal horizontal section length of the existing 177.8mm sieve tube completion method is 600m. If the horizontal section length is greater than 1000m, the conventional completion string will not meet the production needs, but will reduce the production efficiency. Therefore, the completion string of SAGD horizontal well in long horizontal section is optimized, and the influence of length and size of completion string on productivity of SAGD horizontal well is analyzed by simulation calculation, and different horizontal section length and corresponding different completion string size are obtained. The length of horizontal section adapted to 177.8mm sieve pipe string is less than 800m / 219.1mm and the length of 244.5mm sieve pipe string is more than 1000m. In order to further improve the production efficiency of SAGD horizontal well, the production effect of balanced steam injection sieve pipe in SAGD horizontal well with different completion dimensions under long and short horizontal section length is simulated and predicted. The simulation results show that the production efficiency of balanced steam injection sieve tube completion well is increased by nearly 40% compared with conventional completion well, and the completion string size can be reduced from 244.5mm to 177.8 mm in long horizontal section. Through the research in this paper, the optimization scheme of completion string of heavy oil SAGD horizontal well in X Oilfield is put forward. The long horizontal section, large size completion string and balanced steam injection sieve tube completion method can improve the production efficiency of SAGD horizontal well in X Oilfield. The optimization method of completion string of heavy oil SAGD horizontal well provides a theoretical basis for the development of heavy oil reservoirs in China.
【學(xué)位授予單位】：西南石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TE925.3
本文編號(hào)：2315491
[Abstract]:SAGD horizontal well technology has been used in the field of heavy oil production because of its advantages of fast efficiency, high thermal energy utilization, high recovery efficiency and low accumulative gasoline ratio, and has become the mainstream technology in heavy oil recovery. In recent years, in order to improve the efficiency of developing heavy oil by SAGD horizontal well technology, the completion string of SAGD horizontal well has been optimized in foreign countries, and the field test work of large-size string completion and balanced steam injection sieve pipe completion of long horizontal SAGD horizontal well has been carried out. The benefit level of SAGD horizontal well has been improved significantly. Therefore, it is of great significance to further improve the production efficiency of heavy oil by optimizing the SAGD horizontal well completion technology for reference to the technical progress made by foreign countries. This paper takes the main heavy oil well area developed by SAGD horizontal well technology in West X Oilfield of China as the research object and carries out the optimization research of SAGD horizontal well completion. According to the reservoir geological characteristics, the 3D geological model and the wellbore model are established by numerical simulation method. The model can simulate the production of SAGD horizontal well and the change of pressure parameters in the wellbore. The wellbore pressure, cumulative steam injection, cumulative oil production, cumulative SOR (gasoline ratio) and the shape of steam chamber under different completion string are simulated and calculated. The simulation results show that the optimal horizontal section length of the existing 177.8mm sieve tube completion method is 600m. If the horizontal section length is greater than 1000m, the conventional completion string will not meet the production needs, but will reduce the production efficiency. Therefore, the completion string of SAGD horizontal well in long horizontal section is optimized, and the influence of length and size of completion string on productivity of SAGD horizontal well is analyzed by simulation calculation, and different horizontal section length and corresponding different completion string size are obtained. The length of horizontal section adapted to 177.8mm sieve pipe string is less than 800m / 219.1mm and the length of 244.5mm sieve pipe string is more than 1000m. In order to further improve the production efficiency of SAGD horizontal well, the production effect of balanced steam injection sieve pipe in SAGD horizontal well with different completion dimensions under long and short horizontal section length is simulated and predicted. The simulation results show that the production efficiency of balanced steam injection sieve tube completion well is increased by nearly 40% compared with conventional completion well, and the completion string size can be reduced from 244.5mm to 177.8 mm in long horizontal section. Through the research in this paper, the optimization scheme of completion string of heavy oil SAGD horizontal well in X Oilfield is put forward. The long horizontal section, large size completion string and balanced steam injection sieve tube completion method can improve the production efficiency of SAGD horizontal well in X Oilfield. The optimization method of completion string of heavy oil SAGD horizontal well provides a theoretical basis for the development of heavy oil reservoirs in China.
【學(xué)位授予單位】：西南石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TE925.3
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 尹虎;劉輝;李黔;鐘守明;黃建智;;提高稠油水平井注蒸汽效率的技術(shù)研究[J];石油天然氣學(xué)報(bào);2011年12期
2 唐春燕;劉蜀知;;稠油熱采技術(shù)綜述[J];內(nèi)蒙古石油化工;2007年06期
3 曹紅軍;;蒸汽輔助重力驅(qū)產(chǎn)量預(yù)測(cè)[J];內(nèi)蒙古石油化工;2010年09期
4 付喜慶;;稠油開采國內(nèi)外現(xiàn)狀及開發(fā)技術(shù)[J];內(nèi)蒙古石油化工;2014年01期
5 田翔;李黎;謝雄;曹肖萌;;水平井平衡控水篩管(ICD)完井技術(shù)在惠州油田的應(yīng)用[J];石油天然氣學(xué)報(bào);2012年09期
6 吳永彬;李秀巒;孫新革;馬德勝;王紅莊;;雙水平井蒸汽輔助重力泄油注汽井筒關(guān)鍵參數(shù)預(yù)測(cè)模型[J];石油勘探與開發(fā);2012年04期
7 王學(xué)忠;;稠油開采技術(shù)進(jìn)展[J];當(dāng)代石油石化;2010年01期
8 陳治軍;黃曉東;彭輝;尼加提;;稠油水平井均勻注汽工藝技術(shù)研究及應(yīng)用[J];新疆石油科技;2010年03期
9 陳森;竇升軍;游紅娟;張輝;宋曉;;SAGD水平井尾管控液技術(shù)研究與應(yīng)用[J];新疆石油科技;2011年04期
10 陳森;竇升軍;游紅娟;牛麗;宋曉;;風(fēng)城SAGD水平井均勻配汽工藝研究與應(yīng)用[J];石油鉆采工藝;2012年02期
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