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Thermo-Gaso-Chemical Enhanced Hydrocarbon Recovery (TGC-EHR) Method 1.

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Presentation on theme: "Thermo-Gaso-Chemical Enhanced Hydrocarbon Recovery (TGC-EHR) Method 1."— Presentation transcript:

1 Thermo-Gaso-Chemical Enhanced Hydrocarbon Recovery (TGC-EHR) Method 1

2 TGC-EHR – Results increased (↑) 3x10x Production yields increased (↑) consistently by a factor of 3x to 10x+ Continuous stable/sustainable Continuous stable/sustainable flow of increased oil & gas production for long period (years)+ increased (↑)30x In specific cases the production yields increased (↑) by a factor of 30x 2

3 TGC-EHR – Sample Field Treatments FieldYearTypePre-TreatmentPost-TreatmentGainStatus E. Poltavskoye Ukraine1997Gas  2 wells plugged/inactive since 1976 due to very low output  Well #9 - 35,845m3, 4,532m3 of condensate  Well # ,320m3, 2,840m3 of condensate  35,845m3  22,320m3 Continuous until re-plugged 2001 Perm Area Russia 1998Oil  4.7 m3 water free oil/day  14.1m3 water free oil/day (three fold increase)  9.4m3/day 8 years of sustained production Bugrevatovskoye Ukraine 1998Oil  2.6m3/day with 80% water content/cut  26m3/day with 20% water content/cut (10 fold increase)  23.4m3/day At present 15m3/day Levintzovsky Ukraine 1999Gas  12,000m3/day  120,000m3/day (10 fold increase)  108,000m3 /day 90,000m3/day Korobochkinskoye Ukraine 2001Gas  5,000m3/day  160,000m3/day (30 folds+ increase)  155,000m3/ day 8 years sustained production Oklahoma USA 2004Gas & Oil  3 Oil and 1 Gas well  5-6m3/day  Asked to do more wells  Immediate Pressure/Gushe r Continuous Daquing Oil Field China 2009Oil  2.6m3/day – 1 st well  5.4m3/day – 2 nd well  10.6m3/day – 1 st well  17.6m3/day – 2 nd well  8m3/day  12.2m3/day Continuous as of June 2010 Barsy Gelmes Turkmenistan 2010Oil  0.0m3/day – 1 st well  12 m3/day – 2 nd well  8 m3/day – 3 d well  13.5m3/day – 1 st well  37m3/day – 2 nd well  28m3/day – 3 d well  13.5m3/day  25m3/day  20m3/day Continuous as of March 2011

4 Commonly Adopted EHR Methods  Thermal Recovery (Temperature) Decreasing (↓) the VISCOSITY of oil to improve outflow  Gas Injection (Gas + Pressure) Increasing (↑) the FORMATION PRESSURE + Decreasing (↓ ) the VISCOSITY of the oil  Water Chemical Injection (Chemical + Pressure) Decreasing (↓) the VISCOSITY of oil, Increasing (↑) the VISCOSITY of water (e.g. by increasing salt concentration) or Decreasing (↓) the CAPILLARY PRESSURE of oil  Hydraulic Fracturing (Pressure) Forming fracture in the formation, hence Increasing (↑) the PERMEABILITY of the rock  Acidization (Chemical) Increasing POROSITY and PREMEABILITY of the formation 4

5 TGC-EHR – The Method Thermo-Gaso-Chemical Enhanced Hydrocarbon Recovery (TGC-EHR) The TGC-EHR method synergistically combines the key effects of previously adopted methods as well as the novel ones, never applied before 5

6 TGC-EHR – Multifunctional Effects 6 1)Temperature 2)H, H 2 3)Prop. IP 4)Prop. IP 20 in-situ sustained reactions Existing (Common) Modified Existing New * Combines multiple chemical and physical effects. Some are similar to those of other treatments and others unique to TGC-EHR Minutes to Hours Months Years (Self Sustained) -Cracking -Pyrolysis -Hydro-cracking -Cracking -Pyrolysis -Hydro-cracking

7 TGC-EHR - Key Effects (Existing) 1. Pressure 2. Temperature 3. Gas 4. Fractures 5. Chemical/Acidization 7

8 TGC-EHR - Key Effects (New) 8 1. Combustion Gases  Disruption of Clathrates 2. Hot Hydrogen (Atomic & Molecular)  In-situ Cracking 3. Hot Hydrogen (Atomic &Molecular)  In-situ Pyrolysis 4. Combustion Gases  Micro-fracturing 5. Combustion Gases  Hot Acidization 6. Combined Effects  Water Cut Reduction Much More Complete Recovery (Complete Recovery in Lab, One Promising Field Test) Much More Complete Recovery (Complete Recovery in Lab, One Promising Field Test)

9 TGC-EHR – Water Cut Reduction 80% to 20%  In well #68 in Bugrevatovskoye oil field (Ukraine), water cut decreased from 80% to 20% and oil recovery increased 10 fold.  Through: Increased oil output resulting from unplugging pores containing oil, reducing oil viscosity and other mechanisms. Water reacts with treatment mix to release hydrogen and other gases, which, in turn, block some of the pores in the rock containing water. 9

10 TGC-EHR – Water Cut Reduction 10 Oil - water contact BO +H 2 O -> B 2 O 3 + H + Q Combustion Gases Paraffin Cracking & Pyrolysis BO +H 2 O -> B 2 O 3 + H + Q + ⃝ ⃝ ⃝ ⃝

11 Study of the effects of atomic hydrogen on the reservoir rock Study of the effects of hydrogen on permeability and diffusion properties of reservoir rock Study of the combustion of metal-based fuel components Study of kinetics of hydro- reactive mixtures reacting with water at pressures up to 60 MPa Experimental modeling of hydro-cracking and cracking-pyrolysis of heavy hydrocarbons treated with the combustion gases of hydro-reactive and combustive- oxidative mixtures. Study of heat and gas release from hydro- reactive samples (rod-shaped in cylindrical chamber) TGC-EHR – Research Experiments 11

12 12 Outlet for gas chromatography sample Specimen Pressure gauge Seal Isolation Thermal cable Argon Temperature gauge Generator of model gases CO 2 H2H2 Hydrogen gas generator Т=80 ºС Hydrogen affects permeability and diffusion properties of reservoir formation TGC-EHR – Custom Test System

13 TGC-EHR – Hot Hydrogen Impact 13 Untreated Sample Sample treated by Hot Molecular Hydrogen Sample treated by Hot Atomic Hydrogen Results after mechanical stress

14 TGC-EHR – Hydro-cracking Study 14 Of heavy hydrocarbons treated by Combustion Gases Asphalt-Paraffin Treated By Combustion Gases

15 TGC-EHR – 15 Infrared spectrum of Parrafin before and after treatment by Combustion Gases

16 TGC-EHR – Key Advantage Simplicity of execution Simplicity of execution Operational Requirement Pump Unit (500 hhp would be sufficient) High Pressure Iron Batch Mixer (100 bbls capacity) Coiled Tubing Unit (if required in horizontal wells) 16

17 TGC-EHR - Process 17 Step I 1.Fill well with water (well is suppressed via hydrostatic pressure) 2.Extend pump tubing down to the bottom hole 3.With wellhead closed, pump. Reagent Mixture 1 (a solution with specific gravity 1.2 – 1.3 grams per cubic centimeter). * All chemical reactions take place within the well bore or in the reservoir and require no external pressure or heat sources making it a very economical and effective EHR method.

18 TGC-EHR - Process 18 Step II 1.Lift tubing slightly above perforated zone (20 meters above the uppermost perforations). 2.Pump Reagent Mixture 2, which contains hydro-reactive compositions (HRC) and combustible oxidizing mixtures (COM) in a buffered solution with specific gravity 1.6 – 1.62 grams per cubic centimeter. Make sure that all of Reagent Mixture 2 exits the tubing into perforation zone.

19 TGC-EHR - Process 19 Step III 1.Lift tubing slightly above perforated zone (20 meters above the uppermost perforations). 2.Pump Reagent Mixture 2, which contains hydro-reactive compositions (HRC) and combustible oxidizing mixtures (COM) in a buffered solution with specific gravity 1.6 – 1.62 grams per cubic centimeter. Make sure that all of Reagent Mixture 2 exits the tubing into perforation zone.

20 TGC-EHR - Process 20 Step IV 1.Tubing is extended down to the upper the boundary of perforated zone. 2.Reagent Mixture 3 is pumped and injected in the formation by displacing it with water. Reagent Mixture 3 neutralizes and clears colloidal systems that form after treatment.

21 TGC-EHR – HSE ( Health, Safety, & Environment ) Environment Research Study conducted in 2001 by Ministry of Education and Science of Ukraine. US oil experts conducted an assessment of the chemicals used in the TGC-EHR in As a result, we were granted permission and performed oil well treatment in US. Chinese oil industry experts conducted an experimental study of the environmental impact using a model system in The study included sampling and analysis of chemical intermediates and end products of the technology. As a result, we were granted permission and performed oil well treatments in China. 21

22 TGC-EHR – HSE ( Health, Safety, & Environment ) a) Combustive reactions can only occur after the chemicals have been delivered to the productive zone of the well. b) Standard safety procedures for handling chemicals. c) No chemicals detrimental to the environment are used. d) The amounts of chemicals are relatively small. Therefore significant release into environment cannot occur even in the event of mishandling. e) Gases released during combustion (hydrogen, nitrogen, nitrogen oxides, carbon oxides) are also common in natural geochemical processes and are inherent in geological fluids such as ground/underground water, natural gas and oil. f) Non-gaseous reaction products (aluminates, lithium borates, aluminum borates) are salts that are readily hydrolyzed and washed out, which is safer than hydrochloric and hydrofluoric acids widely used in conventional well treatments. 22

23 TGC-EHR – Well Info. Needed Well history, geology/geophysics survey data. Well design/type data (borehole/casing diameters, etc.). Productive horizon depth. Well depth, current well bottom location. Perforation interval (filters). Perforation density. Well production/output history. Chemical composition of the hydrocarbons, water and rocks in the horizon. Porosity/permeability of the strata (overall data for the oil field would suffice if necessary); pressure and temperature data. Daily output of fluid (oil, gas, condensate). Proximity of ground water. 23

24 TGC-EHR – Adapting to Reservoir 24 Crack Forming Regime (recommended for hard, low permeability reservoir formations) Most of the chemical energy is released in the borehole, generating high pressure and temperature: up to MPa and temperature up to 820°C. The gases are released in pulses, in 3 consecutive reactions, over 1 – 120 seconds. Rock fracturing is possible. (Depending on the condition of the well casing and cementing, the temperature and pressure can be significantly reduced if needed)

25 TGC-EHR – Adapting to Reservoir 25 Regime for removal of heavy asphalts-tars-paraffins, cracking-pyrolysis of long- chain hydrocarbons, breakdown of carbon-carbon bonds, hydrocracking Gases are released in 4 phases, forming incomplete oxidation products. Most of the chemical energy is released in the formation, where breakdown of heavy hydrocarbons leads to release of methane, ethane, propane and other light fractions. Under such conditions, carbon participates in reaction that release hydrogen. There are indications that chain reactions are involved and the process may be self-sustaining and continue for several years.

26 TGC-EHR – Adapting to Reservoir 26 Regime for short-term combustion inside reservoir formation Reactions proceed sequentially, without abrupt spikes in pressure and temperature. In the presence of strong oxidizers, combustion in the reservoir proceeds via forming of coke, whose presence largely determines the dynamics of combustion. The duration of this short-term combustion phase depends on the amount of oxidizers used and, on average, is 48 hours.

27 TGC-EHR – Adapting to Reservoir 27 Regime of non-combustive oxidation and hot acid/alkaline treatment (recommended for formations with high permeability and high water content) Involves injection of combustive-oxidizing mixtures and hydro- reactive mixtures into formation. The reactions occur inside the formation at relatively low temperatures (at or slightly above the formation’s temperature).

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32 TGC-EHR – Sample Field Treatments FieldYearTypePre-TreatmentPost-TreatmentGainStatus E. Poltavskoye Ukraine1997Gas  2 wells plugged/inactive since 1976 due to very low output  Well #9 - 35,845m3, 4,532m3 of condensate  Well # ,320m3, 2,840m3 of condensate  35,845m3  22,320m3 Continuous until re-plugged 2001 Perm Area Russia 1998Oil  4.7 m3 water free oil/day  14.1m3 water free oil/day (three fold increase)  9.4m3/day 8 years of sustained production Bugrevatovskoye Ukraine 1998Oil  2.6m3/day with 80% water content/cut  26m3/day with 20% water content/cut (10 fold increase)  23.4m3/day At present 15m3/day Levintzovsky Ukraine 1999Gas  12,000m3/day  120,000m3/day (10 fold increase)  108,000m3 /day 90,000m3/day Korobochkinskoye Ukraine 2001Gas  5,000m3/day  160,000m3/day (30 folds+ increase)  155,000m3/ day 8 years sustained production Oklahoma USA 2004Gas & Oil  3 Oil and 1 Gas well  5-6m3/day  Asked to do more wells  Immediate Pressure/Gushe r Continuous Daquing Oil Field China 2009Oil  2.6m3/day – 1 st well  5.4m3/day – 2 nd well  10.6m3/day – 1 st well  17.6m3/day – 2 nd well  8m3/day  12.2m3/day Continuous as of June 2010 Barsy Gelmes Turkmenistan 2010Oil  0.0m3/day – 1 st well  12 m3/day – 2 nd well  8 m3/day – 3 d well  13.5m3/day – 1 st well  37m3/day – 2 nd well  28m3/day – 3 d well  13.5m3/day  25m3/day  20m3/day Continuous as of March 2011

33 Thank you for your attention 33


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