本文選題：襯管完井 + 水平井�。� 參考：《天然氣地球科學(xué)》2017年08期

【摘要】：襯管完井具有泄流面積大、完井成本低等優(yōu)勢(shì),目前成為水平井完井的主要方式之一。襯管完井水平井酸化改造的關(guān)鍵是如何實(shí)現(xiàn)水平井段上的均勻布酸,但由于割縫襯管與巖石壁面之間環(huán)形空間未真正封隔,常規(guī)分段工藝的應(yīng)用受到限制,致使襯管完井水平井均勻布酸困難。為此,通過(guò)理論研究和室內(nèi)實(shí)驗(yàn)評(píng)價(jià),形成了襯管完井水平井新型均勻布酸技術(shù):(1)預(yù)測(cè)水平井段上初始表皮系數(shù)分布剖面,明確不同井段損害分布特征;(2)建立水平井段上酸液流量數(shù)學(xué)模型,模擬計(jì)算不同井段暫堵轉(zhuǎn)向凈壓力值;(3)優(yōu)化設(shè)計(jì)不同井段襯管割縫參數(shù),優(yōu)選轉(zhuǎn)向劑加量,實(shí)現(xiàn)井底不同轉(zhuǎn)向凈壓力;(4)采用數(shù)值刻畫(huà)方法定量表征酸蝕蚓孔形態(tài),優(yōu)選適合的酸液體系。在安岳氣田現(xiàn)場(chǎng)應(yīng)用8口井,井均增產(chǎn)倍比達(dá)1.95,井均增加測(cè)試產(chǎn)量67.3×104 m3/d,相比射孔完井,單井節(jié)約完井成本900萬(wàn)元,對(duì)同類型氣藏襯管完井水平井均勻布酸技術(shù)具有借鑒意義。
[Abstract]:Liner completion has the advantages of large discharge area and low completion cost, so it has become one of the main methods of horizontal well completion.The key of acidizing modification of liner completion horizontal well is how to realize uniform acid distribution in horizontal well section. However, because the annular space between slit lining tube and rock wall is not really sealed, the application of conventional segmenting process is limited.It is difficult to distribute acid evenly in liner completion horizontal well.Therefore, through theoretical research and laboratory experimental evaluation, a new type of uniform acid distribution technique of liner completion horizontal wells was formed to predict the initial epidermal coefficient distribution profile in horizontal section.The mathematical model of acid fluid flow in horizontal well section is established, and the value of net pressure of temporary plugging of different section is simulated and calculated. The parameters of casing cutting of different section are optimized, and the addition of steering agent is optimized.A numerical characterization method was used to quantitatively characterize the morphology of acid wormworm pores and the suitable acid solution system was selected.The application of 8 wells in Anyue gas field shows that the production of each well is increased as much as Prida 1.95, and the test output is increased by 67.3 脳 104m3 / d. Compared with perforated completion, the completion cost of single well is saved by 9 million yuan, which can be used as a reference for the homogenous acid distribution technology of the horizontal well in the liner completion well of the same type gas reservoir.
【作者單位】： 中國(guó)石油西南油氣田分公司工程技術(shù)研究院;中國(guó)石油西南油氣田分公司工程技術(shù)處;中國(guó)石油西南油氣田分公司川中油氣礦;中國(guó)石油西南油氣田分公司勘探事業(yè)部;
【基金】：中國(guó)石油天然氣股份有限公司科技重大專項(xiàng)(編號(hào):2014E-3207)資助
【分類號(hào)】：TE257

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