本文選題：水侵 + 治水　； 參考：《重慶科技學(xué)院》2015年碩士論文

【摘要】：九龍山氣田位于四川盆地西北部蒼溪縣境內(nèi)，其珍珠沖組氣藏為典型的低孔、中低滲裂縫-孔隙型砂礫巖邊水氣藏。目前該類氣藏的開(kāi)發(fā)國(guó)內(nèi)沒(méi)有相關(guān)借鑒經(jīng)驗(yàn)，針對(duì)氣藏當(dāng)前面臨的嚴(yán)重出水問(wèn)題，在綜合前人研究成果和氣藏已有動(dòng)靜態(tài)資料的基礎(chǔ)上，運(yùn)用氣藏工程的最新理論和方法，以珍珠沖組氣藏為研究對(duì)象，全面研究氣藏的水侵特征和治水對(duì)策，研究對(duì)于指導(dǎo)九龍山氣田珍珠沖組氣藏的后期開(kāi)發(fā)具有重要的意義。 論文首先在分析氣藏地質(zhì)和開(kāi)發(fā)特征的基礎(chǔ)上，劃分出水類型，研究砂巖體分布、裂縫分布與地層水分布的相關(guān)性，得到地層水的分布特征。然后通過(guò)儲(chǔ)層物性和理論圖版判斷氣井的水侵方式；根據(jù)氣井見(jiàn)水的時(shí)間判斷氣藏的水侵方向；利用容積法、物質(zhì)平衡等方法計(jì)算氣藏的水體儲(chǔ)量和水侵量；通過(guò)水驅(qū)替換系數(shù)和水驅(qū)曲線法判斷水體的活躍度。其次利用氣水兩相流動(dòng)方程和動(dòng)態(tài)儲(chǔ)量模型從產(chǎn)能和動(dòng)態(tài)儲(chǔ)量?jī)蓚�(gè)方面研究了出水對(duì)氣藏開(kāi)發(fā)的影響。最后，在氣藏氣水分布和水侵特征研究的基礎(chǔ)上制定了治水方案。 研究結(jié)果表明，珍珠沖組氣藏可劃分為長(zhǎng)期產(chǎn)水、中期產(chǎn)水、不產(chǎn)水以及地層水上竄四種出水類型；地層水分布特征表現(xiàn)為以井控區(qū)為中心的周邊，橫向上不連續(xù)，呈局部富集狀態(tài)，劃分成井控區(qū)西翼、井控區(qū)東翼與南翼以及構(gòu)造北翼三個(gè)水區(qū)；水侵方式主要以裂縫性水竄為主，水侵方向具有多方向性，水體能量有限，但水體活躍，現(xiàn)階段排侵比嚴(yán)重偏低；水侵導(dǎo)致氣井的無(wú)阻流量降低了18%~27%，動(dòng)態(tài)儲(chǔ)量降低了10%~23%；通過(guò)“整體治水、主動(dòng)排水、分步實(shí)施”的治水方案，減緩了井控區(qū)的水侵，進(jìn)一步削弱了水體能量。
[Abstract]:Jiulongshan gas field is located in Cangxi County northwest of Sichuan Basin. The gas reservoir of Zhuzhongchong formation is a typical low porosity gas reservoir with low permeability fracture and pore sand and conglomerate edge. At present, there is no relevant experience in the development of this kind of gas reservoir in China. In view of the serious water problem facing the gas reservoir at present, on the basis of synthesizing the previous research results and the existing static and dynamic data of the gas reservoir, the latest theories and methods of gas reservoir engineering are applied. Taking the gas reservoir of Zhuzhongchong formation as the research object, it is of great significance to study the characteristics of water invasion and water control measures of the gas reservoir in Jiulongshan gas field, which will guide the later development of the gas reservoir of Zhuzhou Chong formation in Jiulongshan gas field. Firstly, on the basis of analyzing the geological and development characteristics of gas reservoir, the paper divides the water type, studies the distribution of sandstone body, the correlation between fracture distribution and formation water distribution, and obtains the distribution characteristics of formation water. Then the water invasion mode of gas well is judged by reservoir physical property and theoretical chart, the direction of water invasion of gas reservoir is judged according to the time of water breakthrough of gas well, and the water reserves and water invasion amount of gas reservoir are calculated by volume method and material balance method. The water displacement coefficient and the water drive curve method are used to determine the activity of water body. Secondly, by using gas-water two-phase flow equation and dynamic reserve model, the effects of effluent on gas reservoir development are studied in terms of productivity and dynamic reserves. Finally, based on the study of gas-water distribution and water invasion characteristics in gas reservoirs, a water control scheme is established. The results show that the gas reservoir of Zhuzhongchong formation can be divided into four types: long-term water production, intermediate water production, non-water production and formation water channeling, and the distribution characteristics of formation water are as follows: the center of the well control area is the periphery, and the horizontal water distribution is not continuous. It is divided into the west wing of the well control area, the east wing and the south wing of the well control area and the three water areas of the structure north wing, the water invasion mode is mainly fractured water channeling, the direction of water invasion is multi-directional, the water body energy is limited, but the water body is active. At the present stage, the discharge ratio is on the low side; the unhindered flow rate of gas wells is reduced by 18% and 27% due to water invasion; the dynamic reserves are reduced by 10% and 23%; through the water control scheme of "overall water control, active drainage, step by step implementation", the water invasion in the well control area is slowed down. Further weaken the water energy.
【學(xué)位授予單位】：重慶科技學(xué)院
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TE377

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