Underground ignition and oil displacement method using coiled tubing carrying electromagnetic wave heating system
A heating system and electromagnetic wave technology, used in earthwork drilling, isolation devices, and production fluids, etc., can solve problems such as retention, low average recovery rate, and unavailability.
Pending Publication Date: 2021-05-25
栾云
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- Application Information
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Problems solved by technology
[0002] Due to technical reasons, 80% of deep coal and difficult-to-use oil resources are stuck in the ground and cannot be utilized
Especially the recovered heavy oil, unrecoverable ultra-heavy oil, high water cut oil reservoir, low permeability oil reservoir and abnormal low temperature oil reservoir, these resources have huge reserves and low average recovery rate
Method used
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Embodiment Construction
[0015] The present invention will be further described below in conjunction with the accompanying drawings. It should be noted that this embodiment is based on the technical solution, and provides detailed implementation and specific operation process, but the protection scope of the present invention is not limited to the present invention. Example.
[0016] This embodiment provides an underground ignition and oil displacement method utilizing coiled tubing to carry an electromagnetic wave heating system, such as figure 1 shown, including the following steps:
[0017] S1. Install the electromagnetic wave heating system 1 on the front end of the coiled tubing 2, and the coiled tubing 2 transports the electromagnetic wave heating system 1 along the heat-insulated gas injection string 3 to the depth of 1300-1600 meters underground. 4 power supply;
[0018] S2, mixing steam and air and using an air compressor 12 to produce miscible air 11, pressurized and injected into the elec...
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Abstract
The invention discloses an underground ignition and oil displacement method utilizing coiled tubing carrying an electromagnetic wave heating system. The underground ignition and oil displacement method adopts the coiled tubing carrying electromagnetic wave to strongly heat the system, and utilizes the electromagnetic wave heating system to heat mixed-phase air and water; when the mixed-phase air and water is injected into a coal seam, the effects of heating the coal seam, realizing underground ignition and establishing combustion can be achieved; and when the mixed-phase air and water is injected into an oil layer, the oil layer can be directly ignited, and a strong oil layer oxidative cracking temperature field can be established, so that an abnormally-low-temperature oil reservoir, a low-permeability oil reservoir, a super heavy oil reservoir and the like reach oxidative cracking conditions, the oil layer is promoted to generate a continuous oxidative cracking reaction, an oil layer ignition effect is achieved, and continuous oil displacement can be realized.
Description
technical field [0001] The invention relates to the technical field of coal and oil exploitation, in particular to an underground ignition and oil displacement method using a coiled tube carrying an electromagnetic wave heating system. Background technique [0002] Due to technical reasons, 80% of deep coal and difficult-to-use oil resources remain underground and cannot be utilized. Especially the remaining heavy oil that has been exploited, unrecoverable ultra-heavy oil, high water-cut oil reservoirs, low-permeability oil reservoirs and abnormally low-temperature oil reservoirs, these resources have huge reserves and low average recovery ratios. If this part of resources can be utilized, it will provide more resource guarantees for national oil supply, hydrogen energy development and economic construction. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the present invention aims to provide an underground ignition and oil displacement met...
Claims
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Patent Timeline
Login to View More IPC IPC(8): E21B43/243E21B43/241E21B36/04E21B43/25
CPCE21B43/243E21B43/241E21B36/04E21B43/25
Inventor 栾云
Owner 栾云