STUDY ON ACID FRACTURE CONDUCTIVITY WITH LENGTH VARIATION IN CARBONATE RESERVOIR
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摘要: 酸压裂缝的缝长和导流能力是评价酸化压裂效果的2个重要指标, 通过应用FracproPT软件对碳酸盐岩酸压过程中酸蚀裂缝导流能力和缝长变化趋势的拟合, 总结了碳酸盐岩油气藏不同储层类型中的裂缝导流能力随缝长的变化规律, 从裂缝导流能力随缝长的变化趋势中可以半定量判断碳酸盐岩储层中缝洞发育带的发育规模。拟合结果与地震和测井解释结果相结合, 对定性和定量判断碳酸盐岩缝洞发育体的规模具有重要意义。Abstract: Based on the method of Nierode-Kruk theory, the change law between fracture conductivity and fracture length in different types of carbonate reservoir was obtained through fitting the change trend of the acid fracture conductivity with length variation, and the fracture-cave scale of the carbonate reservoir was semi-quantitatively determined based on this law. The fitting results combined with seismic and log interpretation has great significance on qualitative and quantitative judgment of the fracture-cave scale in the reservoir.
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图 2 XX1井6322~6415 m净压力拟合裂缝导流能力与缝长的关系(酸压)
Figure 2. Relationship between net pressure fitting flow conductivity and acid fracture length at 6322~6415m in the Well XX1
图 3 XX2井6619~6645 m酸蚀裂缝导流能力与酸蚀缝长关系
Figure 3. Relationship between acid etched fraetloe conductivity and fracture length at 6619~6645 m in the Well XX2
图 4 XX3井5763~5770 m酸蚀裂缝导流能力与酸蚀缝长关系
Figure 4. Relationship between acid etched fraeture conductivity and fracture length at 5763~5770 m in the Well XX3
图 5 XX4井6603~6619 m净压力拟合裂缝导流能力与缝长的关系(直线型)
Figure 5. Relationship between net pressure fitting flow conductivity and fracture length at 6603~6619 m in the Well XX4
图 6 XX5井5940~5960 m净压力拟合裂缝导流能力与缝长的关系(凹形)
Figure 6. Relationship between net pressure fitting flow conductivity and fracture length at 6603~6619 m in the Well XX5
图 7 XX6井6326~6370 m净压力拟合裂缝导流能力与缝长的关系(直线型)
Figure 7. Relationship between net pressure fitting flow conductivity and fracture length at 6326~6370 m in the Well XX6
图 8 XX7井5850~5920 m净压力拟合裂缝导流能力与缝长的关系(凸型)
Figure 8. Relationship between net pressure fitting flow conductivity and fracture length at 5850~5920 m in the Well XX7
图 9 XX8井6438~6448 m净压力拟合裂缝导流能力与缝长的关系
Figure 9. Relationship between net pressure fitting flow conductivity and fracture length at 6438~6448 m in the Well XX8
图 10 XX9井5579~5630 m净压力拟合裂缝导流能力与缝长的关系
Figure 10. Relationship between net pressure fitting flow conductivity and fracture length at 5579~5630 m in the Well XX9
图 13 XX10井6785~6805 m酸压施工曲线
Figure 13. Acid fracturing curve at 6785~6805 m in the Well XX10
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