Work over and Installation Services
Drilling Vertical or Horizontal Well Supervision (particularly in shale well development), Traditional Work over, Oilfield Work Over Rigs and Roustabout Services to be on location while recompletion, plugging or equipping of wells for in house leases and third party jobs as well. Where applicable Petrotech will utilize flexible Poly Urethane tubing for testing of wells and permanent installs for some shallow depths. The flexible tubing has a longer life, Paraffin’s and Asphalt Ines typically don’t stick to flexible tubing (as it does to steel tubing); and flexible tubing has an estimated 10 times longer life dependent upon the corrosiveness of production and by products such as the water produced with hydrocarbons. Then under the right conditions subject to State compliance and approval we will install our state of the art pumping system. This system utilizes green energy (solar) in some cases and in some cases can eliminate totally or partially –costly electric bills, and the need to run highline wires.
Heavy Equipment Services
Provide Heavy Equipment, Oilfield Roustabout, Crane Work, Water Hauling, Setting Pumping Units, Separators, Tanks, Digging Pitts, Locations Roads and Highways for in House leases, third Party Oil Companies and Local and Government Agencies.
Nitrogen, CO2 and Gas Mixture Treatments
We will treat with Nitrogen, CO2 or a combination of the two; through two applications where applicable –1. Huff and Puff and 2. Steady flooding. In cases, HoCyclic gas injection processes have been primarily restricted to the use of pure CO2 or CO2 that has been slightly contaminated. However, it is difficult to employ CO2 in certain circumstances due to transport, economic or corrosion problems. Cyclic gas injections were performed at immiscible conditions in consolidated sandstone cores that contained water flood residual oil. In some test pure methane recovered approximately the same amount of residual oil as CO2, whereas pure nitrogen recovered about half that amount. Pure CO2 was more mobile in porous media than pure CH4 or N2. Certain CO2/N2 mixtures yielded outstanding results, recovering 2-3 times the residual oil produced by pure CO2.
The CO2/N2 mixtures yielded higher first and second cycle oil recoveries than either CO2 or MH4. Unlike most of the pure gas experiments, CO2/N2 mixtures recovered similar quantities of oil in both cycles, with the second cycle yielding only slightly less oil than the first cycle. The mixture containing 10% CO2/N2 produced the highest oil recovery in both cycles, with a total recovery nearly three times that of pure CO2 or MH4.
Exhaust Gas Unit
In development stage. The CO2/N2 gas mixture will be generated from a patented one-of-a-kind portable exhaust unit capable of producing 2.5MMCFD at 2000 psi. Designs have been completed by third parties for a larger volume unit that is capable of 7.5MMCFD at 2000#. The exhaust unit manufacturing facility is capable of building over 100MM of daily of deliverability or 180,000 HP of equipment per year.
Gas Assisted Gravity Drainage
Where applicable, Petrotech Oil and Gas Inc. may elect to use Gas Assisted Gravity Drainage (vertical flood) which in the right cases has proven to be the most efficient method for recovering stranded oil in primary phase depleted oil reservoirs. Natural segregation of our gas mixture at miscibility pressure is a key component in recreating a gas cap. Doubling of the primary oil recovery from a reservoir is expected with this EOR method and gas mixture. SPE paper #89357 documents GAGD recoveries averaging 63% of the OOIP.
Each reservoir’s development plan will incorporate the above technologies and will be designed to maximize its economic value. Where applicable on larger projects (not on Huff and Puffs; on selected new drills), Petrotech Oil and Gas Inc. may elect to use the most current technology in 3-D geophysics available, drilling and compositional reservoir modeling to devise the reservoir’s development plan. In some reservoirs the well may have 2 horizontal wellbores; one each for the injection of gas and production of oil. Well bore placement will maximize the distribution of the CO2/N2 to form a solid gas cap and the recovery of oil from the outer reaches of the reservoir.