發(fā)布時(shí)間：2018-01-31 10:18

  本文關(guān)鍵詞： 頁(yè)巖氣藏 分段壓裂水平井 三重介質(zhì) 典型曲線(xiàn) 影響因素 產(chǎn)能預(yù)測(cè)　出處：《大慶石油地質(zhì)與開(kāi)發(fā)》2016年01期 　論文類(lèi)型：期刊論文

【摘要】：基于傳統(tǒng)的三重介質(zhì)模型,建立了考慮基質(zhì)向人工裂縫竄流和未壓裂區(qū)產(chǎn)能貢獻(xiàn)的裂縫性頁(yè)巖氣藏分段壓裂水平井的三重介質(zhì)產(chǎn)能預(yù)測(cè)模型,并得到了Laplace空間下的解析解,采用Stefest數(shù)值反演繪制了無(wú)因次產(chǎn)量隨時(shí)間變化的雙對(duì)數(shù)產(chǎn)量典型曲線(xiàn),劃分出8個(gè)流動(dòng)階段,最后對(duì)影響裂縫性頁(yè)巖氣藏分段壓裂水平井產(chǎn)量典型曲線(xiàn)的主要因素進(jìn)行了分析。分析結(jié)果表明:儲(chǔ)容比對(duì)產(chǎn)量典型曲線(xiàn)影響較小;3個(gè)竄流系數(shù)對(duì)產(chǎn)量典型曲線(xiàn)的不同階段有著明顯不同的影響;人工裂縫半長(zhǎng)和氣藏寬度對(duì)產(chǎn)量典型曲線(xiàn)中期和后期有著較大的影響;敏感性分析也證實(shí)了基質(zhì)向人工裂縫竄流和未壓裂區(qū)產(chǎn)能貢獻(xiàn)的必要性。研究結(jié)果為裂縫性頁(yè)巖氣開(kāi)發(fā)動(dòng)態(tài)預(yù)測(cè)提供了理論方法,對(duì)頁(yè)巖氣開(kāi)發(fā)的產(chǎn)能預(yù)測(cè)和動(dòng)態(tài)分析具有一定的指導(dǎo)意義。
[Abstract]:Based on the traditional triple medium model, a triple-medium productivity prediction model for fractured shale gas reservoirs with segmented fracturing horizontal wells is established considering the contribution of matrix to artificial fracture channeling and productivity in non-fracturing area. The analytical solution in Laplace space is obtained, and the typical logarithmic yield curve of dimensionless output varying with time is drawn by Stefest numerical inversion, and eight flow stages are divided. Finally, the main factors influencing the typical production curve of fracturing horizontal wells in fractured shale gas reservoirs are analyzed. The results show that the ratio of reservoir to capacity has little effect on typical production curves. The three channeling coefficients had different effects on different stages of typical yield curve. The half length of artificial fracture and the width of gas reservoir have great influence on the middle and late stage of typical production curve. Sensitivity analysis also confirmed the necessity of matrix to artificial fracture channeling and productivity contribution in unfractured area. The results provide a theoretical method for prediction of fractured shale gas development performance. It has certain guiding significance for the prediction and dynamic analysis of shale gas production capacity.
【作者單位】： 中國(guó)石油大學(xué)石油工程學(xué)院;中國(guó)石油長(zhǎng)慶油田分公司第五采氣廠(chǎng);中國(guó)石油塔里木油田勘探開(kāi)發(fā)研究院;北京東方遠(yuǎn)望科技有限公司;
【基金】：國(guó)家重大科技專(zhuān)項(xiàng)(2011ZX05013-006)的部分研究?jī)?nèi)容
【分類(lèi)號(hào)】：TE328
【正文快照】： 水平井分段壓裂技術(shù)是高效開(kāi)發(fā)頁(yè)巖氣藏的重要手段,頁(yè)巖氣藏雖然儲(chǔ)層致密,但天然裂縫往往較為發(fā)育,壓裂后氣藏壓裂區(qū)(SRV區(qū))存在不和井筒的作用,天然裂縫和人工裂縫對(duì)產(chǎn)能有著明顯不同的作用,不能簡(jiǎn)單地平均為一種裂縫介質(zhì)。此外,目前已有的三重介質(zhì)模型認(rèn)為,流體只能由 同性，

本文編號(hào)：1478831