Tailing sand consolidation process suitable for ASP flooding oil-water well fracturing
A ternary composite and water well technology, which is applied in the direction of wellbore/well components, production fluid, earthwork drilling and production, etc., can solve the problems of complex sand-fixing process and high cost, achieve simple sand-fixing process, improve construction efficiency, and The effect of risk reduction
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Embodiment 1
[0021] Example 1: During the process of tailing alkali-resistant coated sand 2 in Well A, after the interval fracturing is completed according to the construction procedure table, the trailing alkali-resistant coated sand 2 is 1.5m 3 , 5m for extrusion cracking liquid 3 , Diffusion pressure for 10 minutes after extrusion. Ordinary proppant 3 is arranged at the front end of the fracture 4, and the alkali-resistant coated sand 2 is concentrated at the end of the fracture 4, near the port ( figure 1 , 2 ). at 0.6m 3 / min construction displacement injection liquid solubilizer 3m 3 , followed by pumping 3m 3 The fracturing fluid is alternately squeezed, and the diffusion pressure is 30 minutes, and the sand consolidation process in this layer is completed (Table 2). When performing sand cementing in the next layer, repeat the above steps. After the fracturing of the whole well is completed, shut down the well and spread the pressure for 150 minutes. After the pipe string is m...
Embodiment 2
[0024] Example 2: During the process of tailing alkali-resistant coated sand 2 in Well B, after the interval fracturing is completed according to the construction procedure table, the trailing alkali-resistant coated sand 2 is 3m 3 , 3m for squeeze cracking liquid 3 , after squeezing, spread the pressure for 20 minutes. Ordinary proppant 3 is arranged at the front end of the fracture 4, and the alkali-resistant coated sand 2 is concentrated at the end of the fracture 4, near the port ( figure 1 , 2 ). at 0.6m 3 / min construction displacement injection liquid solubilizer 3m 3 , followed by pumping 3m 3 The fracturing fluid was replaced and the pressure was diffused for 20 minutes, and the sand consolidation process in this layer was completed (Table 3).
[0025] Table 3 Sand cementing process at the end of Well B
[0026]
[0027] Sand-fixing construction technology is the same as embodiment 1.
Embodiment 3
[0028] Example 3: During the process of tailing the alkali-resistant coated sand 2 in Well C, after the interval fracturing is completed according to the construction procedure table, the trailing alkali-resistant coated sand 2 is 2m 3 , 4m for extrusion cracking liquid 3 , Spread the pressure for 15 minutes after squeezing. Ordinary proppant 3 is arranged at the front end of the fracture 4, and the alkali-resistant coated sand 2 is concentrated at the end of the fracture 4, near the port ( figure 1 , 2 ). at 0.6m 3 / min construction displacement injection liquid solubilizer 3m 3 , followed by pumping 3m 3 The fracturing fluid is alternately squeezed, and the diffusion pressure is 25 minutes, and the sand consolidation process in this layer is completed (Table 4).
[0029] Table 4 Sand cementing process table at the end of Well C
[0030]
[0031] Sand-fixing construction technology is the same as embodiment 1.
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