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Oil well cement and production method thereof

A technology of oil well cement and raw meal, which is applied in the direction of cement production, etc., can solve the problems that have not been reported on oil well cement, and achieve the effects of reducing resource consumption, good fluidity, and high clinker quality

Active Publication Date: 2014-07-09
GUANGXI YUFENG CEMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, do not see relevant oil well cement report of the present invention as yet

Method used

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  • Oil well cement and production method thereof
  • Oil well cement and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1. Raw meal preparation: The raw meal is weighed according to the following weight percentages: limestone 78%, sandstone 15%, converter slag 7%, wet grinding process is adopted, and the raw material into the mill is mixed with a certain proportion of water to pass through ball mill grinding Slurry, pump the slurry into the 8 slurry storages of the slurry pump system. The slurry is accurately dosed, put into the slurry mixing tank, and enter the slurry filtration system through the uniform batching pump. Stir evenly to make a 35% slurry ;

[0035] 2. Slurry dehydration: dehydrate the above slurry with a vacuum suction filter to form a filter cake with a water content of 17%, and the filter cake falls to the conveyor belt with BMP;

[0036] 3. Filter cake drying and crushing: the filter cake is fed into the drying crusher through the box feeder, and the hot exhaust gas (600°C) from the kiln tail will dry it into raw meal powder with a water content of 3%. The dried exhau...

Embodiment 2

[0040]1. Raw meal preparation: The raw meal is weighed according to the following weight percentages: 82% limestone, 9% sandstone, and 9% converter slag. The wet grinding process is adopted, and the raw materials are mixed with a certain proportion of water to pass through ball mill grinding. Slurry, pump the slurry into the 8 slurry storages of the slurry pump system. The slurry is accurately dosed, put into the slurry mixing tank, and enter the slurry filtration system through the uniform batching pump. Stir evenly to make a 37% slurry ;

[0041] 2. Slurry dehydration: dehydrate the above slurry with a vacuum suction filter to form a filter cake with a water content of 18%, and the filter cake falls to the conveyor belt with BMP;

[0042] 3. Filter cake drying and crushing: the filter cake is fed into the drying crusher through a box feeder, and the hot exhaust gas (600°C) from the kiln tail is dried to raw meal powder with a water content of 2%. The dried exhaust gas is br...

Embodiment 3

[0046] 1. Raw meal preparation: The raw meal is weighed according to the following weight percentages: 76% limestone, 18% sandstone, and 6% converter slag. The wet grinding process is adopted, and the raw materials are mixed with a certain proportion of water to pass through ball mill grinding. Slurry, pump the slurry into the 8 slurry storages of the slurry pump system. The slurry is accurately dosed, put into the slurry mixing tank, and enter the slurry filtration system through the uniform batching pump. Stir evenly to make a 34% slurry ;

[0047] 2. Slurry dehydration: dehydrate the above slurry with a vacuum suction filter to form a filter cake with a water content of 18%, and the filter cake falls to the conveyor belt with BMP;

[0048] 3. Filter cake drying and crushing: the filter cake is fed into the drying crusher through the box feeder, and the hot exhaust gas (600°C) from the kiln tail will dry it into raw meal powder with a water content of 1%. The dried exhaust ...

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Abstract

The invention discloses oil well cement and a production method thereof and belongs to the technical field of building materials. The cement contains oil well cement clinker and gypsum, wherein the weight ratio of the oil well cement clinker to the gypsum is (94:6):(96-4); and the oil well cement clinker is made by preparing raw batch from the following raw materials in percent by weight: 75-85% of limestone, 8-18% of sandstone and 5-12% of converter slag, grinding the raw batch, dehydrating slurry, drying and crushing filter cake and sintering to obtain the clinker. The oil well cement disclosed by the invention adopts a scientific clinker formula with high saturation ratio, high iron content and low aluminium ratio, the obtained cement has high strength, appropriate thickness and good mobility, can be used for effectively controlling the thickening time and free liquid and is applicable to oil well construction.

Description

technical field [0001] The invention belongs to the technical field of building materials, and relates to an oil well cement and a production method thereof. Background technique [0002] Oil is the "blood of industry". Economic growth is inseparable from oil consumption. A high-growth economy will inevitably lead to high growth in oil consumption, and a substantial increase in oil consumption will inevitably require the development of more oil fields to meet market demand. . Oil wells are mainly constructed underground and under the sea, and the temperature and air pressure in the wells change with the depth of the wells, so special construction materials must be used. [0003] Oil well cement is an important plugging material specially used in oil and gas well cementing construction in petroleum engineering. When oil and gas wells are cemented, the cement slurry must be pumped to the annular space between the wellbore and casing hundreds of meters or thousands of meters ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/153C04B7/36
CPCY02P40/10
Inventor 蒋杉平黄小青邓玉莲杨茂鑫韦庆凤刘骥廖志明卢燕玲何辛幸宫玉春张芳
Owner GUANGXI YUFENG CEMENT
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