TU 2458-002-84422077-2008
SGS-18 for density up to 1,300 kg/m3
SGS-18 for density up to 1,600 kg/m3
SGS-18 for density up to 1,800 kg/m3
SGS-18 for density up to 2,150 kg/m3
Certificates
- Certificate of conformity
- Certificate for application in technological processes of oil production and transportation
- Sanitary and epidemiological inspection statement
Description of the Proposal
The SGS-18 compound is used in preparation of heavy process fluids (kill fluid, well test fluid, etc.) with non-solid phase and density up to 1,600–2,150 kg/m3. The fluids are used for killing, testing, perforation and temporary abandonment of oil and gas wells. The compound is a free-flowing granulated powder of white or grey color.
In comparison with clay weighted fluids, the distinguishing features of the SGS-18 kill fluid are:
- retention of the reservoir properties of the productive formation and well flow rate due to the absence of the solid phase;
- substantial improvement of efficiency of operations in installation and repair of downhole equipment, especially in deep wells;
- considerable reduction in expenses on preparation (the fluid can be prepared directly at the well-head in a stand-alone mode);
- improved surface-active properties of brines help to retain the reservoir properties of the productive formation and increase reservoir permeability;
- In comparison with the competing product — calcium bromide brine — the distinguishing features of the SGS-18 kill fluid are:
- low corrosiveness, especially at temperatures above 90° С;
- fair price.
Parameters of SGS-18-based fluid
| Density | kg/m3 | 1,600-2,150 |
| Corrosion rate of Grade D pipe steel at 125°С | mm/year | less than 0.125 |
| Permeability recovery factor | b, % | over 90 |
| Plastic viscosity | mPa×s | 80-120 |
| Relative viscosity | T700/500, s | 120-180 |
| рН | 3-7 | |
| Moisturizing ability | P0, cm/hour | 0.05 |
| Crystallization temperature | ˚C | -40 |
COMPOSITION OF THE SGS-18 COMPOUND
SGS-18 well kill fluids can be used in wells with sulfurous products after additional treatment. The SGS-18 absorption capacity for hydrogen sulfide is up to 10 g/L. The solutions prepared with SGS-18 TU 2458-002-84422077-2008, depending on the grade, have low crystallization temperatures (minus 40°С and lower); they are non-aggressive to metal of casing and tubing pipes. SGS-18 compound-based kill fluids are compatible with chemicals used in oil production.
SGS-18 well kill fluids are successfully used in oil and gas wells in Western and Eastern Siberia.
APPLICATION
Killing of oil, gas and gas-condensate wells: heavy well kill fluid without a solid phase.
Killing of oil, gas and gas-condensate wells for operations requiring downhole equipment: process fluid for downhole equipment running into the well. Well testing: process fluid for well testing. Well completion.
Estimated consumption of the SGS-18 compound for preparation of process fluids of different density:
The amount of the SGS-18 chemical agent and water for preparation of 1m3 of the solution at density of 1,600 kg/m3
The amount of the SGS-18 chemical agent and water for preparation of 1m3 of the solution at density of 1,800 kg/m3
The amount of the SGS-18 chemical agent and water for preparation of 1m3 of the solution at density of 2,000 kg/m3
The amount of the SGS-18 chemical agent for weighting up of the CaCl2 solution
