Thermal Gas Chemical Treatment

The technological of Thermo-Gas-Chemical Treatment:

Hydrocarbon reserves of a deposit and the quality condition of the bottom hole formation zone (BFZ) are responsible for the productive capacity of oil, gas, and gas condensate wells. The BFZ permeability declines as payout beds get developed and operated

Why well productive capacity drops:

Colmatation (clogging) of BFZ with drilling mud and cementing mixtures; Reservoir gets clogged with asphalt-tar-paraffin deposits (heavy, hard and viscous oil fractions -bitumen, flux, tar, paraffin) Thermochemical methods can increase hydrocarbon inflow from a production formation via treatment of oil and gas wells. The increase of treatment efficiency due to a fast forming of a large amount of hydrogen of high penetrability and to the increased energy conversion efficiency of the process. A combustible oxidizing compound (COC) is pumped into the formation treatment zone and a combustible initiator is then introduced into the treatment zone.

Advantages of TGC:

  • in gas condensate wells - 3 to up to 20 times
  • in gas wells - 3 to up to 27 times
  • in petroleum wells output increases 1.5-7 times

Physical-chemical conditions of heavy hydrocarbons hydro-cracking are achieved:

  • Temperature is higher than 500 K
  • Pressure is higher than 30 MPA
  • Presence of atomic and molecular hydrogen Presence of lithium

vapors having high catalytic activity
To provide the operation in a well the same equipment is required as in case of capital repairs.
Fast combustion (for a few seconds) with no detonation. This time suffices for creating new cracks in the formation but is not enough for causing damage to the bore-hole rig.
Reagents used for thermo-baro-chemical action and the product of the reaction are ecologically friendly.
Comparable with the technology of hydraulic explosion of formation widely applied worldwide; the latter technology being, however, 3-5 times more costly.
All expenses for thermo-Gas-chemical treatment of the hole-bottom region of the formation are expected to be compensated in 2-5 weeks of the operation of a petroleum well.