A single horizontal well solvent-assisted production method
A production method and horizontal well technology, which is applied in the field of oil reservoir production and single horizontal well solvent-assisted production, can solve the problems of large well spacing fluctuations, affecting development results, consuming large amounts of water and heat, etc., to improve oil production rate and connectivity The effect of speed, ease of drilling and completion, and accelerated oil recovery rate
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[0043] This embodiment provides a single horizontal well solvent-assisted production method, which specifically includes the following steps:
[0044] Reservoir and production conditions:
[0045] The reservoir depth is 250 meters, the effective reservoir height is 10 meters, the reservoir porosity is 30%, the permeability is 5 Darcy, the viscosity of degassed crude oil at 50 °C is 50000 mPa·S, and the formation temperature is 22 °C. The horizontal well is located 1 meter above the bottom of the reservoir. The horizontal section is 400 meters long, the well spacing is 70 meters, and the borehole diameter is 8.5 inches. 7in slotted screens are used to complete wells to prevent sand-carrying production in horizontal wells. Run long and short oil pipes in the screen pipe, and the diameter of the oil pipes is 27 / 8in. Wherein, the end of the short pipe is connected with a rod pump, and the end of the long pipe is 5-10 meters away from the toe of the horizontal well. In addition...
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