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Method for exploiting shale gas using biomass thermal power

A biomass energy and shale gas technology, which is applied in the development of fluids, earth-moving drilling, wellbore/well components, etc., can solve the problems of environmental pollution and high production costs, achieve improved recovery, avoid accumulation and pollution, High recovery effect

Active Publication Date: 2018-10-26
QINZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the method of using gasoline, diesel, etc. as fuel to generate thermal power to increase the recovery rate of shale gas, firstly, the extraction cost is high, and secondly, it is easy to cause environmental pollution

Method used

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  • Method for exploiting shale gas using biomass thermal power
  • Method for exploiting shale gas using biomass thermal power
  • Method for exploiting shale gas using biomass thermal power

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A method for thermally exploiting shale gas using biomass energy, the method is to set two inclined injection wells A4 and a vertical collection well A5 in the underlying sandstone layer A1 and shale layer A2 to be exploited, and the three wells The bottoms are connected directly together. Inject fuel, combustion accelerant, ignition agent respectively in two injection wells A4, and ignite described fuel, then obtain shale gas in collecting well A5, described fuel is biomass pellet material, and this biomass pellet material is A kind of granular fuel made by pressing dry raw materials such as rotten wood slag, sawdust, wood powder, straw, corn stalks in the mountains and forests through an outdoor biomass pellet manufacturing machine. The combustion enhancer is air, and the ignition agent is Industrial paraffin.

[0052] The biomass particle manufacturing machine in the field includes a power transmission mechanism 1, a casing 2, a base frame 11, a main shaft 12, a chu...

Embodiment 2

[0066] A method for exploiting shale gas using biomass thermal power, the method is basically the same as the first embodiment, the difference is: the method is to set two vertical wells in the underlying sandstone layer A1 and shale layer A2 to be mined Injection well A4 and a vertical collection well A5, the bottom of the three wells are connected together by a horizontal well.

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Abstract

The invention provides a method for exploiting shale gas by utilizing biomass energy heat power and relates to the field of shale gas exploiting. The method comprises the steps that an injection well and a collecting well are arranged in a to-be-exploited bottom layer, fuel and combustion improvers are injected into the injection well, the fuel which is a biomass particle material is ignited, and hence the shale gas is obtained in the collecting well. According to the method for exploiting the shale gas by utilizing the biomass energy heat power, the adopted fuel is the biomass particle material which is large in heating quantity and high in recovery efficiency and has the characteristics of environmental protection, energy saving and low cost; the biomass particle material is particle type fuel produced by directly utilizing field biomass through a field biomass particle manufacturing machine; different from an existing model, the manufacturing machine comprises a power transmission mechanism, a feeding hopper, a discharging hopper, a rotary pressing wheel set, a first discharging mold plate, a second discharging mold plate and the like; and the field biomass particle manufacturing machine has the characteristics of being capable of achieving natural moisture content material room-temperature forming, small in size, light in weight, high in output, low in energy consumption and good in forming effect and is suitable for large-demand-quantity heat power fuel used for unconventional natural gas resource shale gas exploiting.

Description

technical field [0001] The invention relates to the field of shale gas exploitation of unconventional natural gas resources, in particular to a method for exploiting shale gas by thermal power of biomass energy. Background technique [0002] Shale gas is a clean and efficient unconventional energy resource and chemical raw material. It is mainly used for civil and industrial fuel, chemical industry and power generation. It is an important supplement to conventional energy and has broad development prospects. However, the formation and enrichment of shale gas has its own unique characteristics. It mainly occurs in organic-rich mud shale and its interlayers, and exists mainly in adsorption and free states. Among them, the free phase (approximately 50%) exist in fractures, pores and other storage spaces; exist in kerogen, mucus particles and void surfaces in an adsorbed state (about 50%); a very small amount is stored in kerogen, asphaltene and oil-bearing layers in a dissolved...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/243
CPCE21B43/243
Inventor 卢炳雄于景维黄远林徐文礼
Owner QINZHOU UNIV
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