開(kāi)江—梁平臺(tái)內(nèi)海槽東段長(zhǎng)興組白云巖儲(chǔ)層沉積-成巖系統(tǒng)研究
發(fā)布時(shí)間：2018-12-12 06:50
【摘要】：為了指導(dǎo)部署四川盆地白云巖儲(chǔ)層中鉆井,在油氣鉆井巖心觀察與描述、野外剖面實(shí)測(cè)和樣品采集的基礎(chǔ)上,結(jié)合鏡下薄片鑒定、X衍射、物性和地球化學(xué)特征分析,對(duì)開(kāi)江—梁平臺(tái)內(nèi)海槽東段長(zhǎng)興組白云巖儲(chǔ)層的沉積-成巖系統(tǒng)進(jìn)行了深入研究。認(rèn)為臺(tái)地邊緣生物礁和臺(tái)地邊緣淺灘為最重要的儲(chǔ)集相帶,顆粒白云巖、生物礁白云巖和晶粒白云巖為最主要的儲(chǔ)集層巖性,晶間孔、晶間溶孔和超大溶孔為目的層最有效的儲(chǔ)集空間,孔洞縫復(fù)合型儲(chǔ)層為目的層最優(yōu)質(zhì)的儲(chǔ)集類型。綜合分析認(rèn)為,長(zhǎng)興組沉積-成巖系統(tǒng)與白云巖儲(chǔ)層在時(shí)空上具有良好的耦合關(guān)系,臺(tái)地邊緣生物礁和臺(tái)地邊緣淺灘相控制了白云巖儲(chǔ)層的區(qū)域分布范圍,而不同成巖系統(tǒng)對(duì)儲(chǔ)層的貢獻(xiàn)程度不同。其中:地層封存鹵水與混合熱鹵水成巖系統(tǒng)是儲(chǔ)層形成的基礎(chǔ)與關(guān)鍵,地層封存鹵水形成低孔低滲的孔隙型Ⅲ類儲(chǔ)層,混合熱鹵水形成中孔中滲的孔洞型Ⅱ類儲(chǔ)層;構(gòu)造熱液成巖系統(tǒng)對(duì)儲(chǔ)層貢獻(xiàn)最大,并形成高孔高滲的孔洞縫復(fù)合型Ⅰ類優(yōu)質(zhì)儲(chǔ)層。
[Abstract]:In order to guide the deployment of drilling in dolomite reservoirs in Sichuan Basin, on the basis of core observation and description of oil and gas drilling, field profile measurement and sample collection, combined with microscopic slice identification, X-ray diffraction, physical properties and geochemical analysis, The sedimentary-diagenetic system of the dolomite reservoir of Changxing formation in the eastern section of the Kaijiang-Liang platform is studied. It is considered that the reef and shoal of platform margin are the most important reservoir facies zone, and granular dolomite, reef dolomite and grain dolomite are the most important reservoir lithology and intergranular pore. Intergranular dissolved pores and super-large dissolved pores are the most effective reservoir space for the target layer, and the porous fracture composite reservoir is the best reservoir type for the target layer. It is concluded that the sedimentary diagenetic system of Changxing formation has a good coupling with dolomite reservoir in time and space, and the platform edge reef and platform edge shoal facies control the regional distribution of dolomite reservoir. The contribution of different diagenetic systems to reservoir is different. The formation seal and storage of brine and the diagenetic system of mixed hot brine water are the basis and key of reservoir formation. The formation seal brine forms low porosity and low permeability type 鈪，
本文編號(hào)：2374126
[Abstract]:In order to guide the deployment of drilling in dolomite reservoirs in Sichuan Basin, on the basis of core observation and description of oil and gas drilling, field profile measurement and sample collection, combined with microscopic slice identification, X-ray diffraction, physical properties and geochemical analysis, The sedimentary-diagenetic system of the dolomite reservoir of Changxing formation in the eastern section of the Kaijiang-Liang platform is studied. It is considered that the reef and shoal of platform margin are the most important reservoir facies zone, and granular dolomite, reef dolomite and grain dolomite are the most important reservoir lithology and intergranular pore. Intergranular dissolved pores and super-large dissolved pores are the most effective reservoir space for the target layer, and the porous fracture composite reservoir is the best reservoir type for the target layer. It is concluded that the sedimentary diagenetic system of Changxing formation has a good coupling with dolomite reservoir in time and space, and the platform edge reef and platform edge shoal facies control the regional distribution of dolomite reservoir. The contribution of different diagenetic systems to reservoir is different. The formation seal and storage of brine and the diagenetic system of mixed hot brine water are the basis and key of reservoir formation. The formation seal brine forms low porosity and low permeability type 鈪，
本文編號(hào)：2374126
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