Fracturing method for improving laying effect of heterogeneous reservoir proppant
A heterogeneous reservoir and proppant technology, applied in chemical instruments and methods, earthwork drilling, drilling composition, etc., can solve problems such as no support, and achieve the effect of ensuring effective support and reducing construction friction
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Embodiment 1
[0038] As the best implementation mode of the present invention, it discloses a fracturing method for improving the proppant laying effect of heterogeneous reservoirs, which includes:
[0039] A. Collect and evaluate geological data of target wells;
[0040] B. According to the reservoir permeability of the target well and the control radius of a single artificial fracture, the segment length, cluster spacing and cluster number are designed;
[0041] C. Design artificial fracture length, flow conductivity, fracturing fluid scale and proppant scale based on optimal production;
[0042] D. Carry out test fracturing on the target well, and determine the efficiency η of the target well reservoir fracturing fluid;
[0043] E. According to the determined fracturing fluid scale and fracturing fluid efficiency, calculate the usage of pre-fluid, pre-sand-carrying fluid and sand-carrying fluid respectively;
[0044] The design volume of prefluid V p is the total fluid volume of the f...
Embodiment 2
[0058] For a specific application example, take a horizontal well QL in the tight sandstone gas reservoir of the Shaximiao Formation in central Sichuan as an example. Point A of the well has a vertical depth of 2225.88m and an oblique depth of 3110m, point B has a vertical depth of 2250.31m and an oblique depth of 4025m, and the horizontal section is 915m long , the horizontal section explains 5 sections of gas layers in total, with a thickness of 792m, a reservoir thickness of 601.6m, an average porosity of 10.5%, and a total average water saturation of 41.3%.
[0059] A. Collect and evaluate geological data of target wells, including but not limited to, 3D seismic data, drilling data, mud logging data, well logging data, and core test data;
[0060] B. According to the reservoir permeability of the target well and the control radius of a single artificial fracture, design the segment length, cluster spacing, and cluster number. The wells are divided into 16 sections and 52 c...
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