In shallow tight reservoirs

the hydraulic fracturing tends to produce horizontal fractures. For the horizontal wells

multi-stage fracturing is easy to generate only one large horizontal fracture

which leads to poor stimulation effect. However

the single well mode of “bow-shape horizontal well + multi-stage horizontal fractures” can not effectively explore this kind of reservoir. In order to further improve the production degree of shallow tight reservoir

the development mode of spatial-braided well pattern in shallow tight reservoir is proposed based on the feasibility of shallow reservoir drilling

and the numerical simulation is used to verify the effectiveness of spatial-braided well pattern. The numerical simulation results show that under the same number of wells and drilling footage

the oil production

cumulative oil production and reservoir recovery degree of spatial-braided well pattern are higher than those of the opposite well pattern and staggered well pattern. However

with the expansion of the fracture scale in horizontal fracturing

the gap with staggered well pattern decreases. At the same time

according to the simulation

the reverse 7-point pattern water injection not only replenishes the formation energy

but also changes the seepage state

so that the remaining oil in the regional edge and between wells can be effectively displaced

and the recovery rate is significantly improved. The researches provide efficient development method for the efficient development of shallow tight reservoir.