本文選題：TX井 + 牛蹄塘組��； 參考：《地球科學(xué)》2017年07期

【摘要】：TX1井是四川盆地外圍第一口針對(duì)牛蹄塘組頁(yè)巖壓裂的井,巖心現(xiàn)場(chǎng)解析含氣量為1.00~3.06m~3/t,含氣性較好,展現(xiàn)了較好的勘探前景.但復(fù)雜構(gòu)造以及下部含水層對(duì)后期儲(chǔ)層改造提供了挑戰(zhàn).對(duì)TX1井進(jìn)行了壓裂改造,返排過程中氣體點(diǎn)火2~3m,但后期一直出水,返排率大于100%.利用Meyer軟件進(jìn)行壓裂擬合評(píng)價(jià),結(jié)果顯示TX1井在壓裂過程中因溝通了底部高含水層,導(dǎo)致壓后出水嚴(yán)重;壓裂改造未形成復(fù)雜的裂縫網(wǎng)絡(luò),限制了儲(chǔ)層改造的效果.因此認(rèn)為直井壓裂改造受體積的限制,只能作為對(duì)頁(yè)巖儲(chǔ)層含氣性與產(chǎn)能的評(píng)價(jià)手段,頁(yè)巖氣商業(yè)性開發(fā)還需通過水平井鉆井和大規(guī)模的分段壓裂改造來實(shí)現(xiàn).該井的鉆探施工與壓裂改造經(jīng)驗(yàn)為本地區(qū)下一步勘探開發(fā)指明了方向.
[Abstract]:Well TX1 is the first well on the shale fracturing in the periphery of the Sichuan basin. The core site has a high gas content of 1.00~3.06m~3/t and good gas content, which shows a good prospect for exploration. However, the complex structure and the lower aquifer provide a challenge for the later reservoir reconstruction. The fracturing of the TX1 well and the gas ignition 2~3 in the process of back discharge are made. M, but in the later period, the discharge rate is more than 100%., the rate of return row is greater than that of the fracture fitting evaluation using Meyer software. The result shows that the TX1 well has a high water bearing layer in the bottom of the fracturing process, which leads to serious water after fracturing, and the fracturing transformation does not form a complex fracture network, which restricts the effect of the reservoir reconstruction. Therefore, it is considered that the fracture reconstruction of the straight well is limited to the volume limit. The system can only be used to evaluate the gas and productivity of shale reservoirs, and the commercial exploitation of shale gas should be realized through horizontal well drilling and large-scale fractured reconstruction. The drilling construction and fracturing experience of this well indicate the direction of the next exploration and development in the region.
【作者單位】： 中國(guó)地質(zhì)調(diào)查局油氣資源調(diào)查中心;中國(guó)國(guó)儲(chǔ)能源化工集團(tuán)股份公司;銅仁中能天然氣有限公司;
【基金】：中國(guó)地質(zhì)調(diào)查局項(xiàng)目(No.12120114054101)
【分類號(hào)】：TE377

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本文編號(hào)：1938590