【摘要】：威遠頁巖氣產(chǎn)業(yè)化示范區(qū)內(nèi)頁巖氣勘探開發(fā)獲得戰(zhàn)略性突破,但頁巖地層非均質(zhì)性較強,井間產(chǎn)量差異性大,分析產(chǎn)能影響因素,優(yōu)選示范區(qū)內(nèi)的頁巖氣產(chǎn)能建設(shè)核心區(qū)是當前的重要任務(wù)。通過巖心觀察與描述、老井復(fù)查、分析測試等手段分析了頁巖地層、儲層特征,根據(jù)海相頁巖氣儲層分級評價標準對威遠地區(qū)龍馬溪組頁巖進行儲層綜合評價；采用基于網(wǎng)格積分的容積法計算了威遠地區(qū)頁巖氣資源量；從地形、水系、管網(wǎng)、城市規(guī)劃區(qū)、風(fēng)景區(qū)五方面分析了威遠地區(qū)地面條件。結(jié)果表明：由于受到剝蝕的影響,龍馬溪組地層厚度遠離剝蝕區(qū)有增厚的趨勢；威遠地區(qū)頁巖氣儲層質(zhì)量好,優(yōu)質(zhì)頁巖氣儲層厚為20.14m～46.45m；威遠地區(qū)頁巖氣總資源量為4.8×1012m3,平均資源豐度為5.27×108m3/km2,資源豐度遠離剝蝕區(qū)向南東方向有增大的趨勢；威遠地區(qū)丘陵范圍大,地形條件好,水系發(fā)育,水源條件好,扣除城市規(guī)劃區(qū)、礦權(quán)面積,地面可工作面積較大,為4311.65km2,輸氣主干線主要為南北向,集氣干線主要為東西向,區(qū)域內(nèi)管網(wǎng)發(fā)達。通過對比分析國內(nèi)外選區(qū)研究現(xiàn)狀,選擇了埋深、厚度、資源豐度、壓力系數(shù)、地應(yīng)力、地面條件六個參數(shù)作為頁巖氣建產(chǎn)核心區(qū)評價參數(shù),建立了中國海相頁巖氣建產(chǎn)核心區(qū)優(yōu)選標準,運用綜合信息疊合法,對威遠地區(qū)龍馬溪組頁巖氣建產(chǎn)核心區(qū)進行優(yōu)選。威遠地區(qū)優(yōu)選出1個建產(chǎn)核心區(qū),即W2-W4井區(qū),可建產(chǎn)面積為1108.88km2。從優(yōu)選出的核心區(qū)內(nèi)鉆井油氣顯示、試油、生產(chǎn)情況來看,鉆探效果好,驗證了選區(qū)的合理性,有效地指導(dǎo)了頁巖氣產(chǎn)能建設(shè)。
[Abstract]:The exploration and development of shale gas in Weiyuan shale gas industrialization demonstration area has made a strategic breakthrough, but the shale formation heterogeneity is strong, the cross-well production is different, and the factors affecting productivity are analyzed. The core area of shale gas productivity construction is an important task at present. The shale formation and reservoir characteristics are analyzed by core observation and description, old well review, analysis and test, and comprehensive reservoir evaluation of Longmaxi formation shale in Weiyuan area is carried out according to marine shale gas reservoir classification evaluation standard. The volume method based on grid integral is used to calculate the shale gas resources in Weiyuan area, and the ground conditions in Weiyuan area are analyzed from five aspects: topography, water system, pipe network, urban planning area and scenic spot. The results show that the formation thickness of Longmaxi formation has a tendency of thickening away from the denudation area due to the influence of denudation, the quality of shale gas reservoir in Weiyuan area is good, the thickness of high quality shale gas reservoir is 20.14 m ~ 46.45 m, and the thickness of high quality shale gas reservoir is 20.14 m ~ 46.45 m. The total amount of shale gas resources in Weiyuan area is 4.8 脳 1012m3, the average resource abundance is 5.27 脳 108m3 / km2, and the resource abundance increases from the denudation area to the south and east. The area of mine right is larger, the working area of ground is 4311.65km2, the main trunk of gas transmission is mainly from south to north, the main trunk of gas gathering is mainly from east to west, and the pipe network in the region is developed. Based on the comparative analysis of the present situation of the selection research at home and abroad, six parameters, such as buried depth, thickness, resource abundance, pressure coefficient, ground stress and ground condition, are selected as the evaluation parameters of shale gas production core area. The criteria for optimal selection of marine shale gas production core area in China were established and the core area of shale gas production of Longmaxi formation in Weiyuan area was selected by comprehensive information stack method. In Weiyuan area, one core area was selected, that is, W2-W4 well area, with an area of 1108.88km2. The oil and gas drilling in the selected core area shows that the drilling effect is good in oil testing and production, which verifies the rationality of the selection area and effectively guides the production capacity construction of shale gas.
【學(xué)位授予單位】：西南石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TE328;P618.13

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