本文選題：低滲氣藏 + 裸眼完井　； 參考：《重慶科技學(xué)院》2017年碩士論文

【摘要】：J58井區(qū)是一個低孔、低滲、低壓巖性圈閉氣藏,局部存在地層水,但無統(tǒng)一的氣水邊界。該井區(qū)內(nèi)微幅度構(gòu)造、斷裂帶發(fā)育,自上而下發(fā)育了盒3、盒1、山2、山1多套儲層,其中盒1層段為主力開發(fā)層。盒1產(chǎn)層為薄差層,上、下隔層分為薄、厚層兩種。前期J58井區(qū)盒1儲層評價階段以直井為主,該區(qū)部署直井14口,采取直井常規(guī)壓裂改造工藝,其中12口井不同程度見水,工業(yè)氣流井僅為4口,整體壓裂效果不是很理想。本文針對J58井區(qū)盒1儲層直井常規(guī)壓裂改造效果不明顯的問題,根據(jù)盒1儲層物性、氣藏剖面特征及平面產(chǎn)水特征,提出了盒1低滲薄層壓裂改造主體思路;利用測井資料計算儲層巖石力學(xué)參數(shù)方法,建立了盒1儲層的巖石力學(xué)參數(shù)和地應(yīng)力的動靜態(tài)關(guān)系曲線,較準(zhǔn)確地預(yù)測了儲隔層的應(yīng)力剖面和力學(xué)參數(shù);通過對盒1儲層完井方式和壓裂工藝的優(yōu)選,提出了裸眼封隔器分段壓裂技術(shù),并優(yōu)選出了低排量、變排量和采用低粘度壓裂液的控縫高技術(shù);優(yōu)選了盒1儲層壓裂改造液體體系,提出了“胍膠基液+交聯(lián)液”的混合壓裂液體系方案,并利用壓裂軟件FracproPT10.3優(yōu)化了盒1層主壓裂施工參數(shù)。本文研究成果應(yīng)用于生產(chǎn)現(xiàn)場,取得了較好效果。
[Abstract]:J58 well area is a low porosity, low permeability, low pressure lithologic trap gas reservoir with local formation water, but no uniform gas-water boundary. In this well area, the micro-amplitude structure and fault zone are developed, and more than one set of reservoirs have been developed from top to bottom, such as box 3, box 1, Shan 2 and Shan 1. Box 1 production layer is thin difference layer, upper and lower layer is divided into thin and thick layer. In the early stage of reservoir evaluation of J58 well block box 1, 14 straight wells were deployed in this area, and the conventional fracturing technology was adopted in this area. Among them, 12 wells were water in varying degrees, and only 4 were industrial airflow wells. The overall fracturing effect was not very good. In view of the problem that the effect of conventional fracturing reconstruction in the box 1 reservoir of J58 well area is not obvious, according to the physical properties of reservoir, the characteristics of gas reservoir profile and the characteristics of water production in plane, the main idea of fracturing reconstruction for box 1 low permeability thin layer fracturing is put forward in this paper. By using logging data to calculate the rock mechanics parameters of reservoir, the dynamic and static relationship curves between rock mechanics parameters and in-situ stress of reservoir No. 1 are established, and the stress profile and mechanical parameters of reservoir separation layer are predicted more accurately. Based on the selection of completion mode and fracturing technology of Box1 reservoir, the fracturing technology of open hole Packer is put forward, and low displacement, variable displacement and fracturing high control technology with low viscosity fracturing fluid are selected. The fracturing fluid system of box 1 reservoir was selected, and the mixed fracturing fluid system of guanidine gel based fluid crosslinking fluid was put forward, and the main fracturing parameters of box 1 layer were optimized by fracturing software FracproPT10.3. In this paper, the research results are applied to the production site, and good results have been obtained.
【學(xué)位授予單位】：重慶科技學(xué)院
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TE357.1

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本文編號：2021548