Abstract: A method for filling an oil and gas well of a fractured oil and gas reservoir with pack-off particles to reduce water and increase oil production comprises the following steps: (1) injecting a filling liquid carrying pack-off particles into a wellbore and a fracture via a wellhead, until a stratum crack/fracture extension pressure is reached or exceeded, or until an injection amount per unit injection pressure is close to zero, or until a preset filling amount of pack-off particles is reached; (2) launching production.

Abstract: A method for filling an oil and gas well of a fractured oil and gas reservoir with pack-off particles to reduce water and increase oil production comprises the following steps: (1) injecting a filling liquid carrying pack-off particles into a wellbore and a fracture via a wellhead, until a stratum crack/fracture extension pressure is reached or exceeded, or until an injection amount per unit injection pressure is close to zero, or until a preset filling amount of pack-off particles is reached; (2) launching production. The present invention efficiently addresses the problem of water channeling and water production existing in various fractures, by direct filling and recovery filling of the fractures, directly filling of the annular space, and filling from the water injection well to the production well.

Abstract: A method and a system for segmental flow control in an oil-gas well are disclosed. The oil-gas well includes a first annular space (111) and a second annular space (103). The first annular space (111) is formed with the space between the borehole wall (101) of the oil-gas well and a perforated tube (102) which is in the oil-gas well and extends along an axial direction of the oil-gas well; The second annular space (103) which is formed with the space between the perforated tube (102) and a flow-control filter string (105) which is in the perforated tube (102) and extends along the axial direction of the oil-gas well. The method includes filling anti-channeling isolating particles (109) in the first annular space (111) and the second annular space (103) to enable fluid to flow in the first annular space (111) and the second annular space (103) filled with the anti-channeling isolating particles (109) in the manner of seepage.

Abstract: A method and a system for segmental flow control in an oil-gas well are disclosed. The oil-gas well includes a first annular space (111) and a second annular space (103). The first annular space (111) is formed with the space between the borehole wall (101) of the oil-gas well and a perforated tube (102) which is in the oil-gas well and extends along an axial direction of the oil-gas well; The second annular space(103) which is formed with the space between the perforated tube(102) and a flow-control filter string (105) which is in the perforated tube(102) and extends along the axial direction of the oil-gas well. The method includes filling anti-channeling isolating particles (109) in the first annular space (111) and the second annular space (103) to enable fluid to flow in the first annular space (111) and the second annular space (103) filled with the anti-channeling isolating particles (109) in the manner of seepage.

Abstract: A method and a system for segmental flow control in an oil-gas well are disclosed. The oil-gas well includes a first annular space (111) and a second annular space (103). The first annular space (111) is formed with the space between the borehole wall (101) of the oil-gas well and a perforated tube (102) which is in the oil-gas well and extends along an axial direction of the oil-gas well; The second annular space (103) which is formed with the space between the perforated tube (102) and a flow-control filter string (105) which is in the perforated tube (102) and extends along the axial direction of the oil-gas well. The method includes filling anti-channeling isolating particles (109) in the first annular space (111) and the second annular space (103) to enable fluid to flow in the first annular space (111) and the second annular space (103) filled with the anti-channeling isolating particles (109) in the manner of seepage.