【摘要】：塔河油田碳酸鹽巖縫洞型油藏水平井酸壓投產(chǎn)時(shí),存在籠統(tǒng)酸壓效果不理想,分段酸壓難度大、工具選擇困難、裂縫走向難控制等問(wèn)題,為此,采用數(shù)值模擬方法分析了碳酸鹽巖縫洞型油藏水平井采用魚骨刺柔性管完井時(shí)的增產(chǎn)效果及經(jīng)濟(jì)性。結(jié)果表明:魚骨刺柔性管未連通有效縫洞體時(shí),單井產(chǎn)油量隨著魚骨刺柔性管裝置數(shù)量增加而增加,但是平均單套裝置的增油量呈現(xiàn)先增加后減小的趨勢(shì),連通縫洞體概率較低的井建議采用6~10套魚骨刺柔性管裝置進(jìn)行完井作業(yè);連通單個(gè)有效縫洞體時(shí),產(chǎn)油量隨縫洞體的體積增大而增加;連通多個(gè)縫洞體且縫洞體總體積相同時(shí),累計(jì)產(chǎn)油量隨著連通縫洞體的數(shù)量增加而增大;連通1個(gè)以上縫洞體即可取得較好的經(jīng)濟(jì)效益。研究結(jié)果表明,塔河油田碳酸鹽巖縫洞型油藏水平井可以采用魚骨刺柔性管完井。
[Abstract]:When acid fracturing is put into production in horizontal wells of carbonate fracture-cavity reservoirs in Tahe Oilfield, there are some problems, such as the general acid-fracturing effect is not ideal, the acid fracturing in sections is difficult, the tool selection is difficult, the fracture strike is difficult to control, and so on. In this paper, numerical simulation method is used to analyze the effect of increasing production and economy of horizontal wells in carbonate fractured and cavernous reservoirs when they are completed with fishbone spiny flexible tube. The results show that the oil production of single well increases with the increase of the number of fish bone piercing flexible tube devices when the fish bone spiny flexible tube is not connected with the effective fracture cavity body, but the average oil increment of the single set of devices increases first and then decreases. In the wells with low probability of connected fractures and cavities, it is suggested that six or ten sets of fish bone piercing flexible tube devices should be used for completion operations. When a single effective fracture cavity body is connected, the oil production increases with the increase of the volume of the fracture cavity body, and when multiple fractures and cavities are connected and the total volume of the fractures and cavities is the same, the oil production increases with the increase of the volume of the fractures and cavities. The accumulative oil production increases with the increase of the number of connected fractures and cavities, and better economic benefits can be obtained by connecting more than one jointed cavity body. The results show that the fishbone spiny flexible tube can be used for the completion of horizontal wells in carbonate fracture-cavernous reservoirs in Tahe Oilfield.
【作者單位】： 中國(guó)石化石油工程技術(shù)研究院;頁(yè)巖油氣富集機(jī)理與有效開(kāi)發(fā)國(guó)家重點(diǎn)實(shí)驗(yàn)室;中國(guó)石化西北油田分公司工程技術(shù)研究院;
【基金】：中國(guó)石化科技攻關(guān)項(xiàng)目“自適應(yīng)調(diào)流控水完井技術(shù)推廣及工業(yè)化應(yīng)用”(編號(hào):P16117)資助
【分類號(hào)】：TE257

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本文編號(hào)：2251100