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Fossil energy exploiting method and system

A technology for fossil energy and mining methods, which is applied in the fields of fluid production, coal gasification, and earth-moving drilling, etc., can solve the problems of easily reducing the oil displacement effect, etc., and achieve the effects of ensuring the recovery rate, improving the fluidity, and saving costs.

Pending Publication Date: 2018-02-02
XINJIANG GUOLIHENG CLEAN ENERGY TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the present invention proposes a method for exploiting fossil energy, aiming at solving the problem that the oil displacement method in the prior art easily reduces the oil displacement effect

Method used

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  • Fossil energy exploiting method and system
  • Fossil energy exploiting method and system
  • Fossil energy exploiting method and system

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Embodiment Construction

[0027] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0028] Method example:

[0029] see figure 1 , figure 1 It is a flowchart of a fossil energy mining method provided by an embodiment of the present inventi...

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Abstract

The invention provides a fossil energy exploiting method and system. The fossil energy exploiting method comprises the following steps that well building is conducted, specifically, an oil well is drilled and exploited from the ground surface to a target oil layer, a connecting channel is built between the first end of a coal gasification channel built in a coal bed above the target oil layer in advance and the target oil layer, and a preset distance is arranged between the connecting channel and the oil exploitation well; gasification is conducted, specifically, gasifying agents are conveyedto the coal gasification channel through a gas inlet well built from the ground surface to the interior of the coal bed in advance, coal and the gasifying agents are subjected to coal gasification reaction, reaction gas with a preset temperature is generated, and the reaction gas is conveyed to the target oil layer through the connecting channel; oil flooding is conducted, specifically, the reaction gas and crude oil in the target oil layer are subjected to reaction, and the crude oil is driven to move towards the oil exploitation well; and oil exploitation is conducted, specifically, crude oil around the oil exploitation well is collected and conveyed to the ground surface. According to the fossil energy exploiting method and system, the reaction gas generated in the coal gasification channel can be directly conveyed into the target oil layer to be subjected to oil flooding, the oil flooding effect is effectively improved, and the recovery efficiency of the crude oil is ensured.

Description

technical field [0001] The present invention relates to the technical field of fossil energy, in particular to a method and system for exploiting fossil energy. Background technique [0002] Currently, fossil fuels mainly include coal, oil, oil sands, oil shale, etc. With the gradual consumption of shallow (below 1000 meters) coal resources and medium-high permeability oil layer resources, the exploitation of deep (below 1000 meters) coal resources and heavy oil resources has attracted more and more attention from all over the world. Generally speaking, in many deep areas, such as the Jimsar sag area in the eastern Junggar Basin, Xinjiang, and the Xiaolongwan oil area of ​​Liaohe Oilfield, coal beds, oil beds and gas beds exist at the same time, with coal beds in the upper part and oil and gas beds in the lower part. [0003] Currently, heavy oil recovery methods include: CO 2 Oil flooding and steam flooding. Among them, CO 2 Oil flooding technology such as: patent CN103...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/24E21B43/16E21B43/30E21B43/295
CPCE21B43/164E21B43/24E21B43/295E21B43/30E21B43/305
Inventor 徐斌张树川郑林杜慧华徐军
Owner XINJIANG GUOLIHENG CLEAN ENERGY TECH CO LTD
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