Treatment method for waste slurry and rock debris of deep well polysulfonate drilling fluid
A technology for drilling waste mud and polysulfonic acid, which is applied in separation methods, pyrolysis treatment of sludge, wellbore/well components, etc. Thermal pollution, the effect of eliminating pollution
Active Publication Date: 2017-11-17
BAZHOU SHANSHUIYUAN ENG TECH CO LTD +1
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Problems solved by technology
The invention realizes the harmless treatment of drilling waste, and the disposal mixture complies with the national soil quality level 3 standard. The components are highly integrated, the device occupies a small area, can be concentrated and continuous, and the treatment efficiency is high, but it does not involve the tail gas treatment system.
Method used
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Embodiment 1
[0026] like figure 1As shown, the deep well polysulfide drilling fluid waste mud and drill cuttings containing sulfonated phenolic resin, asphalt powder, barite and water content of more than 85% are conveyed from the upper part of the cooling heat exchange drying furnace 2 by the feeder 1 into the cooling heat exchange drying furnace 2, and start the stirring device in the cooling heat exchange drying furnace 2. The high-heat gas with a temperature of 850-1100°C comes from the high-temperature pyrolysis furnace 15 and is burned by the secondary burner 3. After being evenly distributed by the gas distributor 20 at the lower part of the cooling heat-exchanging drying furnace 2, it enters the cooling heat-exchanging drying furnace 2 within. The waste mud and drill cuttings entering the cooling heat exchange drying furnace 2 fully contact with the high-heat gas entering the cooling heat exchange drying furnace 2 in reverse, and the waste mud and drill cuttings are preheated to a...
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The invention discloses a treatment method for waste slurry and rock debris of a deep well polysulfonate drilling fluid. According to the method, the deep well polysulfonate drilling waste slurry and rock debris which contain sulfonated phenolic resin, asphalt powder, barite and the like and is high in viscosity and liable to be solidified when heated exchanges heat with high-heat tail gas to be preliminarily dried and then subjected to high-temperature pyrolysis through high-heat air; air exchanges heat with hot slag generated by pyrolysis and is further heated, thus the high-heat air is generated, and the hot slag cooled through heat exchange can be collected in a centralized mode; the barite can be recycled through a barite collecting tank and a three-stage cyclone separator; and the cooled high-heat tail gas can be discharged in an up-to-standard mode after being subjected to treatment such as dust removing and washing. Recycling and harmless treatment of the waste slurry and the rock debris of the deep well polysulfonate drilling fluid can be achieved rapidly, efficiently and conveniently, and meanwhile heat energy and the barite resource are recycled.
Description
technical field [0001] The invention belongs to the technical field of waste mud treatment in oil and gas fields, and in particular relates to a recycling and harmless treatment method for waste mud and cuttings of deep well sulfonated drilling fluid. Background technique [0002] In the process of deep well drilling, due to the high formation temperature, in order to achieve high efficiency and safety of drilling operations, polysulfonated anti-slump high-temperature drilling fluids with additives such as barite, sulfonated phenolic resin, sulfonated tannin, and asphalt powder are generally used Tie. This system ensures safe and rapid drilling during the drilling process. However, due to the many types of additives, high dosage and complex composition, the waste mud cuttings formed after the operation is abnormally stable, with complex pollution components and difficult treatment. It is difficult to achieve the chroma and COD of solid waste leachate by conventional solidif...
Claims
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IPC IPC(8): E21B41/00E21B21/01C02F11/10B01D50/00
CPCE21B21/01E21B41/005C02F11/10B01D50/10Y02W10/40
Inventor 唐慧英吴立刚屈撑囤
Owner BAZHOU SHANSHUIYUAN ENG TECH CO LTD