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A resource utilization method of shale gas oil-based drilling cuttings

A technology of oil-based drilling cuttings and shale gas, which is applied in the field of resources and the environment, can solve problems such as resource waste, achieve the effects of improving oil production efficiency, realizing efficient resource utilization, and increasing product added value

Inactive Publication Date: 2019-11-26
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nevertheless, shale gas oil-based drilling cuttings contain a large amount of catalytically active substances, which are discarded after direct pyrolysis or used as low-end inorganic fillers, etc., which is a serious waste of resources.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The shale gas oil-based drilling cuttings described in this example were taken from the shale gas field (E 107°35′, N29°43′) in the third horizontal drilling stage of the Jiaoshiba block, Fuling District, Chongqing City. Drilling oily shale cuttings. The main components are 0# diesel oil and shale, and the SiO in the shale gas oil-based cuttings 2 / Al 2 o 3 The molar ratio is 9.3, and the oil content is 46814mg / kg.

[0024] Shale gas oil-based drilling cuttings were dried at a constant temperature of 105°C for 24 hours to remove moisture content, then ground and passed through a 10-mesh sieve for later use.

[0025] After the Padina crassa Yamada was air-dried and crushed, it was also dried at a constant temperature of 105°C for more than 24 hours to completely remove the water, and ground for later use.

[0026] Mix the aforementioned ground shale gas oil-based cuttings and Padina salvularis evenly in a ratio of 1:1, and then put them into the tubular pyrolysis fur...

Embodiment 2

[0032] The shale gas oil-based drilling cuttings described in this example were taken from the shale gas field (E 107°35′, N29°43′) in the third horizontal drilling stage of the Jiaoshiba block, Fuling District, Chongqing City. Drilling oily shale cuttings. The main components are 0# diesel oil and shale, and the SiO in the shale gas oil-based cuttings 2 / Al 2 o 3 The molar ratio is 11.4, and the oil content is 52034mg / kg.

[0033] Shale gas oil-based drilling cuttings were dried at a constant temperature of 105°C for 24 hours to remove moisture content, then ground and passed through a 10-mesh sieve for later use

[0034] After the grape fern algae (Caulerpa lentillifera) were air-dried and crushed, they were also dried at a constant temperature of 105°C for more than 24 hours to completely remove water, and ground for later use.

[0035] Mix the aforementioned ground shale gas oil-based cuttings and grape fern algae in a ratio of 3:2, and then put them into the tubular p...

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Abstract

The invention discloses a method of producing oil with algal biomass pyrolysis. The method comprises the following steps; drying, dehydrating and grinding the shale gas oil-based drill cuttings for use; airing, crushing, drying, dehydrating and grinding the algal biomass for use, mixing the obtained shale gas oil-based drill cutting and the obtained algal biomass, heating the mixture to 300 to 500DEG C in anaerobic condition and pyrolyzing the mixture for 1.5 to 3h in the condition of thermal insulation, and finally collecting, drying and condensing a gaseous product during pyrolysis so as toobtain the biomass oil product. The oil-based drill cuttings containing harmful contaminant are included in the list of national hazardous waste. The shale gas oil-based drill cuttings are subjectedto pyrolysis as well as the algal biomass, so that the environmental pollution of shale gas oil-based drill cuttings is removed along with producing oil, particularly, the oil rate is reduced to or even lower than 0.3% by weight, and further, the efficient utilization of traditional industrial waste is realized, the waste is turned into wealth and the product added value is enhanced.

Description

technical field [0001] The invention belongs to the technical field of resources and environment, and in particular relates to a resource utilization method of shale gas oil-based drilling cuttings. Background technique [0002] Due to its non-renewability and serious carbon dioxide emissions, the production and use of fossil energy are increasingly restricted in today's increasingly stringent environmental protection requirements. Therefore, it is imperative to find renewable resources that can replace fossil energy, and biomass energy is the most promising resource that can replace fossil energy and other chemicals. [0003] Seaweed biomass is currently a research and development hotspot of biomass energy. A series of experiments in the 1950s and 1960s demonstrated that under certain circumstances, algae can produce large amounts of lipids, which eventually form oil droplets inside the cells. The extraction and use of these oils is a low-carbon, environmentally friendly ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G1/00
CPCC10G1/00C10G2300/1003C10G2300/1011C10G2300/1014
Inventor 夏世斌章诗辞王静邓墨扬
Owner WUHAN UNIV OF TECH
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