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Modified Leituoshi stone for drilling liquor and its production mehtod

A production method and rectorite technology, which are applied to drilling materials and drilling fields, can solve the problems of high equipment cost, high energy consumption, unsatisfactory comprehensive performance, etc. wait time effect

Inactive Publication Date: 2002-03-27
湖北名流累托石科技股份有限公司
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  • Application Information

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Problems solved by technology

For example, in 1985, the Institute of Prospecting Engineering of the Ministry of Geology and Mineral Resources and the Mud Company of the Ministry of Geological and Mineral Resources applied for the patent "Artificial Sodium Soil Process", the application number is 85105253, using calcium-based bentonite as the main raw material, and adopting double-screw extrusion method to realize continuous and mechanized and automated production of artificial sodium bentonite; and the mud company of the Ministry of Geology and Mineral Resources mainly introduced the use of double rollers in the article "Application of Roller Extrusion in the Production of Artificial Sodium Bentonite" in the fourth issue of "Nonmetallic Minerals" in 1992. The extrusion method is to modify calcium-based bentonite to sodium-based bentonite. The disadvantage of the above method is that the wet method with more water is used, the energy consumption required for drying and grinding is high, the equipment cost is high, and the raw materials are all bentonite. After artificial sodium treatment, the overall performance is not ideal; the slurry used in the oilfield or mining area needs to be pre-hydrated for more than 16 hours before it can be used in the well

Method used

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Embodiment 2

[0020] Embodiment 2: use the production method of the present invention to produce modified rectorite for drilling fluid. In the mineral structure of calcium-based rectorite clay, the interlayer cations of montmorillonite are mainly calcium ions, accounting for 90.5% of the total amount. The purity is 65%, dried to 9.7% water content, crushed to a particle size below 1.0mm (16 mesh) with a jaw crusher, 600kg of calcium-based rectorite clay ore is placed in a mixing machine, and 24kg of industrial Sodium carbonate was dry-rolled in the mixer for 6 minutes. After mixing, 15kg of water was added in stages from the top of the feed port at the same time in a spray mode, and the mixed material was modified by shearing and extrusion for 45 minutes. After modification, the material is left to age for 7 days, air-dried naturally until the water content is less than 10%, and packed to obtain the modified rectorite for drilling fluid. Carry out batch production with the production method...

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PUM

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Abstract

The present invention uses calcium base leituoshi stone ore as raw material, and adopts semi-dry artificial modification process including the steps: breaking clay mineral, adding 1%-5% sodium salt, uniformly mixing them, water-spraying, shearing, pressing, piling and ageing for 7-10 days, drying so as to obtain modified leituoshi stone. Said invention is simple in production method, convenient for operation, less in dosage of modifying agent and low in energy consumption and cost. The phi-600 reading value of drilling fluid prepared with modified leituoshi stone is greater than or equal to 60, mud-making rate is greater than or equal to 18 cu.m / t, filter loss is less than or equal to 13.5 ml and dynamic shear force is less than or equal to 1.2XPVPa. It is superior to sodium base bentonite in all the properties, and is applicable for drilling in the fields of petroleum industry, natural gas engineering, geologic drilling engineering and building engineering, etc.

Description

technical field [0001] The invention relates to a modified rectorite for drilling fluid and a production method thereof, in particular to a material used for drilling in industries such as petroleum, natural gas, geological mines, and construction engineering, and belongs to the field of drilling compositions. Background technique [0002] Before the present invention, drilling fluid was mostly prepared with sodium bentonite, and in sodium bentonite, the natural sodium bentonite that can be used for drilling fluid is all seldom at home and abroad; The sodium bentonite of artificial sodium is foreign such as the United States, Britain, Italy , Japan, Brazil and other countries, such as Shandong Gaoyang, Anqiu, Consort Ying, Liaoning Jianping, Hubei Ezhou and other places, all use calcium-based bentonite as the main raw material. For example, in 1985, the Institute of Prospecting Engineering of the Ministry of Geology and Mineral Resources and the Mud Company of the Ministry o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
Inventor 赵连强陈济美汪昌秀
Owner 湖北名流累托石科技股份有限公司
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