Technical Field :

The present invention relates to renewable energy power generation and more particularly to geo-pressure clean power generation applications from the over pressurized subsurface formations.

Background Art :

Geothermal energy is an important source of renewable energy it works by circulating hot water from rocks below the earth’s surface, or by pumping cold water into deep hot rocks and returning the heated water to the surface to drive steam turbines to produce electricity.

Problem and defect in the prior art:

Geothermal energy is geographically restricted to few locations around the world and most geothermal resources cannot be utilized in a cost-effective manner.

Disclosure Of Invention:

New in the invention

The present invention provides tools and method to generate clean energy from the kinetic flow energy of the subsurface over pressurized fluid and gases downhole the wells or at wells heads as a new source of clean energy without any emission or harmful by-products through the following applications.

1 -Hydrogen Producer Source Well Application (Fig-1)

2- Electric Producer & Desalination Well Application (Fig-2)

3- Cross Flow Electrical Well Application (Fig-3)

4- Steam Producer Source Well Application (Fig-4)

5- Electric Gas Producer Well Application (Fig-5)

The Geo-pressure energy advantages are: -

• A new unlimited source of clean energy

• Simple technology.

• Available resources everywhere in all sedimentary basins (+90% of earth surface) with huge underground lateral and vertical extension.

• Available 24/7 without affecting by weather changes as wind or day and night

succession as solar energy

• Add economical values especially for oil and gas companies to benefit from re-using tens of thousands of closed depleted and dry wells around the world • Suitable for all existing gas producer wells to recover the lost energy at wellhead and at all depressurization phases

• A new source of fresh water at desert areas

• A Warming source for far cold areas

Introduction

The over pressurized formations are a worldwide phenomenon causing a lot of serious difficulties while drilling oil and gas wells, so well’s casing program is designed to isolate the deferent pressure regimes along the well borehole to minimize drilling problems.

The over pressure formation/layers are defined as any pore pressure that is greater than the hydrostatic pressure of the formation water occupying the pore space which can occur at any depth

Some geological mechanism is providing a seal or cap to interfere with the fluid column and preventing it from achieving normal hydrostatic equilibrium.

The cause of over pressure is attributed to a combination of various geological, geochemical, geothermal and mechanical changes such as

• Clay compaction & digenesis

• Incomplete sediment compaction

• Faulting & Trust Faulting

• Structure Changes during compaction

• Massive rock salt deposition

• Salt diaperism

• Tectonic compaction

• Re-pressuring from deeper levels

• Generating of hydrocarbons

Full description

The present invention uses Geo-pressure clean energy innovated applications to generate considerable amount of clean energy from the kinetic flow of the widely distributed high pressurized deep water layers 10 & 200 to produce Flydrogen fuel , electricity and to desalinate underground saline water and also to generate huge clean energy from natural gas flow at gas well heads directly instead of throttling and depressurization stages before gas separation processes (without any gas burning ) through the following innovative applications:-

1 -Hydrogen Producer Source Well Application

The Hydrogen Producer Source Well Application (as shown in Fig-1) is designed to use the kinetic flow energy of underground water to spin down hole generators 12 inside the well (or hydro- turbines at surface) and generating a DC electric current to feed electrolysis unit 14 at surface in order to produce hydrogen gas and valuable electrolysis by-products such as Caustic soda and Chlorine gas

the application consists mainly of

• Perforated overpressure reservoir 10

• Cascaded downhole generators column and assembly or surface hydro- generator • Electrolysis unit 14 powered by the generated generators 12

• Surface storage tanks

2- Electric Producer & Desalination Well Application

The Electric producer & Desalination well application (as shown in Fig-2) is designed to use the kinetic flow energy of underground over-pressure water to spin down hole generators 12 inside the well or surface hydro- turbines and generating a DC electric current to get electricity directly or to feed electrical boiler 16 for boiling the produced saline water at surface to get fresh water directly and isolate salts , or to use the produced steam from the electrical boiler to run a suitable steam turbine 18 and condensating the steam to fresh water at the end

the application consists mainly of

• Perforated overpressure reservoir 10

• Cascaded downhole generators column 12 and assembly or surface hydro- generator

• Electric boiler unit 16 powered by generators 12

• Steam turbine 18

• Surface storage tanks

3- Cross Flow Electrical Well Application

The Cross Flow Electrical Well Application (as shown in Fig-3) is designed to produce electricity by allowing a cross flow communication between normal/over pressurized aquifer 10 and low pressurized aquifer or depleted reservoir 100 inside the well as the kinetic flow energy of underground water will spin the down hole generators 12 to get electricity directly for many purposes without producing water to surface

the application consists mainly of

• Perforated overpressure aquifer 10

• Perforated low pressure aquifer or depleted reservoir 100

• Cascaded downhole generators column 12 and assembly

• Isolation packers 102

4- Steam Producer Source Well Application

The Steam Producer Source Well application (as shown in Fig-4) is designed to use the kinetic flow energy of over pressurized underground fresh water for spinning down hole generators 12 at the lower part of the well to feed electrical heaters assembly 55 at the upper part of the well to generate a pressurized steam at the upper part of the well to run a steam turbine 18 directly at surface or to use the steam directly for warming purposes at cold areas the application consists mainly of

• Perforated overpressure fresh water reservoir 200

• Cascaded downhole generators column 12 and assembly at the lower part of the well

• Electric heaters 55 assembly unit powered by downhole generators at the upperpart of the well • Isolation tubes 44 to isolate heat between heaters assembly 55 and down hole generators 12

• Steam turbine 18 at surface - Electric Gas Producer Well Application

The Electric Gas Producer Well application (as shown in Fig5-) is designed to Control gas flow rate at well head 50 directly by a high anti-corrosion turbine 53 (Not Turbo-expander) instead of well head chock 50 to generate huge clean electricity from the Geo-pressure kinetic energy of the flowing gas before separation 56 to save the huge unexploited energy without any major modification at well head 50 and completion structures

the generated clean electricity can be used to feed the nearby electric grids if possible or powering the other gas facilities as gas liquification/ separation or producing hydrogen by electrolysis to use it externally or injecting it to gas to increase its economic value the application is very beneficial for gas with high H2S/C02 content as the density and mass flow volume greater than the pure natural gas which gives more kinetic force to spin the turbines

The application is designed also to generate energy at LNG regasification stations to generate energy from the regasification volume expansion force instead of depressurization / regulators/valves as the gas volume expands more than 600 times while regasification instead of depressurization / regulators/valves as the gas volume expands more than 600 times while regasification

The application consists mainly of

• Gas producer well

• By -pass lateral pipelines 51 with control valves 52 & 54 to direct gas flow from main pipeline to turbine 53 and vice versa

• High anti-corrosion Steam turbine 53

• Discharge unit 55 with compressor to evacuating gas from turbine 53 and from the By-pass pipelines while emergency or maintenance

Invention Work Theory

The working theory of geo-pressure energy applications is to generate clean energy from the kinetic flow energy of the subsurface over pressurized fluid and gases downhole the well or at well head as a new source of clean energy without any emission or harmful by-products through the following applications.

1- Hydrogen Producer Source Well Application (Fig-1) work theory

• Identify overpressure aquifers 10 by geological model

• Perforate target zone 10

• Install down hole generator 12 or surface hydro-power generator

• Install electrolysis unit at surface 14

The overpressure water will flow from the overpressure aquifer 10 upward to spin down hole generator assembly 12 or surface hydro-power generator and generate DC electricity to feed the electrolysis unit 14 to separate the produced water into Hydrogen gas, chlorine gas and Caustic soda.

2- Electric Producer & Desalination Well Application (Fig-2) work theory

• Identify overpressure aquifers 10 by geological model

• Perforate target zone 10

• Install down hole generator 12 or surface hydro-power generator

• Install electric boiler unit at surface 16

• Install steam turbine 18

The overpressure water will flow from the overpressure aquifer 10 upward to spin down hole generator assembly 12 or surface hydro-power generator and generate DC electricity to feed the electric boiler 16 to heat up produced water to produce steam to run a suitable steam turbine 18 which will condensate as a fresh water at the end and to separate salts too

3- Cross Flow Electrical Well Application (Fig-3) work theory

• Identify overpressure aquifers 10 and under pressure/depleted zone 100 by geological model

• Perforate target zones 10 & 100

• Install down hole generator 12

• Set isolation packers 102

The overpressure water will flow from the overpressure aquifer 10 upward to fill the low pressure/depleted zone 100 and it will spin the down hole generator assembly 12 and generate electricity to surface without producing water outside the well

4- Steam Producer Source Well Application (Fig-4) work theory

• Identify overpressure fresh aquifers 200 by geological model

• Perforate target zone 200

• Install down hole generator 12 at the lower part of the well hole

• Install electric heaters assembly 55 at the upper part of the well

• Install steam turbine 18 The overpressure fresh water will flow from the overpressure aquifer 10 upward to spin down hole generator assembly 12 and generate DC electricity to feed the electric heaters assembly 55 to heat up produced water and produce steam to run a steam turbine 18 to get electricity or to use the hot steam for warming cold areas.

5- Electric Gas Producer Well Application (Fig-5) work theory

• Identify the suitable turbine 53 as per the required gas production rate

• Install control valves 52&54 on the main line before gas separator

• Install the by-pass pipelines 51

• Install turbine 53

• Install discharge unit 55

• Open well head chock valves 50 (x-mass tree) completely

The gas flow rate will be controlled by a turbine 53 instead of well head x-mass tree and well head valves/regulators, the well head chock valves 50 (x-mass tree) will completely open and the raw gas will flow through by-pass pipeline 51 to instead of main line by Control valves 52 & 54. The gas will spin the turbine 53 and return again to the main pipeline to separation stage 56

Discharge unit 55 with compressor to evacuating gas from turbine 53 and from the By pass pipelines while emergency or maintenance

The application also to be used to generate energy at LNG regasification stations from the regasification volume expansion force instead of depressurization / regulators/valves as the gas volume expands more than 600 times while regasification