Liquid CO2 leaching and fracturing reservoir transformation integrated equipment for oil and gas well
A technology for reservoir reconstruction and oil and gas wells, applied in the direction of wellbore/well components, other gas emission reduction technologies, production fluids, etc., can solve the problems of small fracture affected area, limitation, low construction efficiency, etc., and improve the conductivity and permeability, change the stress state, and increase the effect of the reformed area
Active Publication Date: 2021-07-09
HENAN POLYTECHNIC UNIV +3
View PDF8 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The above-mentioned technologies have transformed certain reservoirs to varying degrees, but the reservoir environment in my country is complex, and the above-mentioned methods are all limited in some areas
The hydraulic measures have a single fracture formation in the reservoir, which is not suitable for water-sensitive formations; hydraulic slits and cavitation measures are not suitable for hard coal seams, and the construction efficiency is low; controlled pre-splitting blasting is not suitable for high-gas coal seams; CO2 phase change fracturing is highly adaptable , but the scope of reservoir stimulation is limited, and the area affected by fractures is small
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0028] like figure 1 As shown, an oil and gas well liquid CO2 leaching and fracturing integrated equipment for reservoir stimulation is connected by multiple CO2 leaching crackers to form an integrated through-pipe structure, including a detonator 1, a wire 2, and a DC socket 3 , one-way valve 4, inflation head 5, pipe body 6, heater 7, screen pipe 8, ring pad 9, gasket 10, blind hole 11, cracking head 12, DC plug 13 and pressure control member 14.
[0029] The right end of the pipe body 6 is an inflatable head 5 with a one-way valve 4. One end of the inflatable head 5 is provided with a DC socket 3, and the other end is connected to the screen pipe 8 inside the pipe body 6. The heater 7 is located inside the screen pipe 8. The heater One end of the wire 7 is connected to the cracking head 12, and the other end is connected in series with the DC socket 3 of another CO2 leaching cracker through the DC plug 13;
[0030] The left end of the pipe body 6 is connected to another CO...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| Diameter | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses liquid CO2 leaching and fracturing reservoir transformation integrated equipment for an oil and gas well. The liquid CO2 leaching and fracturing reservoir transformation integrated equipment comprises a plurality of CO2 leaching fracturing devices, one-way valves, screen pipes, heaters, wires and exploders; each CO2 leaching fracturing device is composed of a cylindrical pipe body, an inflation head and a cylindrical fracturing head provided with a blind hole; the right end of each pipe body is the inflation head provided with the one-way valve, one end of each inflation head is provided with a conductive socket, the other end of each inflation head is connected with the screen pipe in each pipe body, the heaters are located in the screen pipes, one end of the wire of each heater is connected with the inflation head, and the other end of the wire of each heater is connected with a conductive socket of another CO2 leaching fracturing device in series through a conductive plug; and the left end of each pipe body is connected with another CO2 leaching fracturing device through the cylindrical fracturing head provided with the blind hole, the multiple CO2 leaching fracturing devices are connected to form an integrated through pipe structure, and a pressure control component is arranged at the tail end of the through pipe structure.
Description
technical field [0001] The invention belongs to the field of reservoir transformation of oil and gas wells, and relates to an integrated equipment for liquid CO2 leaching and fracturing reservoir transformation of oil and gas wells. Background technique [0002] At present, oil and gas well reservoir stimulation stimulation technologies mainly include static loading, pulse jet hydraulic measures, nitrogen, CO2 and other gas displacement, active water + nitrogen fracturing technical measures, controlled pre-splitting blasting, CO2 phase change fracturing and other intensification Enhanced anti-pressure measures. The above-mentioned technologies have transformed certain reservoirs to varying degrees, but the reservoir environment in my country is complex, and the above-mentioned methods are all limited in some areas. The hydraulic measures have a single formation of fractures in the reservoir, which is not suitable for water-sensitive formations; the measures of hydraulic sli...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): E21B43/26E21B43/16
CPCE21B43/26E21B43/164Y02P90/70
Inventor曹运兴张军胜孟兵兵张新生石玢曹永恒郭帅房杨百舸
OwnerHENAN POLYTECHNIC UNIV