Technical introduction:
The gravel-filled sand control completion technology is a metal welded wire-wound screen and a wellbore annulus that are placed in the horizontal section of the open hole. The gravel mortar is pumped through the segmentation filling tool, and the filled gravel is blocked around the screen to form a bridge. Blocking prevents the migration of formation sand. The multi-stage filtration barrier ensures that the oil flow is continuously lifted to the ground along the screen through the porous system in the filling body, and the formation sand is well-formed in the ground to achieve no sand or slight sand production during the production period of the oil well.

Technical features:
1. The seepage area is large, the conductivity is strong, and a large radius area flow can be formed to increase production;
2. The formed high-permeability sand-blocking barrier is in direct contact with the wellbore wall, which can prevent the formation framework from moving.
3. Adopting the idea of horizontal well continuous filling technology to solve the problem of gravel filling in horizontal wells in long wells;
4. The sand control has a long effective period and the yield increase effect is good.

Applicable conditions:：
1. Buried shallow compaction; high porosity, high permeability, cemented loose and easy to sand;
2, the mud content is high, easy to expand and loose when exposed to water;
3. The reservoir is sensitive to strong protection, and the water sensitive and sensitive structure is severe;
4. The oil sand has a medium median particle size, high density of heavy oil, high viscosity, strong suspension force, poor dragability, and strong and super heavy oil reservoir with strong sand carrying capacity;
5. low porosity and low permeability, easy to block the pipeline;
6. Long-term low-yield, low-efficiency and difficult-to-use reservoirs.