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Extended bentonite for drilling fluid and method for making same

A bentonite and drilling fluid technology, applied in chemical instruments and methods, inorganic pigment treatment, fibrous fillers, etc., can solve the problems of coarse useless solid particles, complicated preparation methods, and low sand-carrying capacity, and achieves wall-building capacity and The effect of good rheological properties, simple production method and strong sand-carrying ability

Inactive Publication Date: 2005-03-16
赵玉梅
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AI Technical Summary

Problems solved by technology

[0002] The use of drilling fluid is the main means to carry cuttings and protect the well wall after the rotary drilling method is formed. The drilling fluid requires reducing the solid phase content in the drilling fluid. The solid phase comes from two aspects. One is the accumulation during the drilling process. Drilling cuttings are called useless solid phase, and the useless solid phase particles are relatively coarse. In recent years, through the improvement of solid control equipment, it has been effectively controlled. The second is to add bentonite to form mud solid phase particles when preparing drilling fluid, which is called useful solid phase. , At present, the technical performance index of the American synergistic bentonite commonly used in drilling fluids is already higher than the API standard. It is 3.2% soil-based slurry. Its reading value at φ600 rpm is 39.3, the filter vector is 13.1, and the dynamic-plastic ratio is 0.6. , still has the defects of low pulping rate, high filter vector, less sand-carrying capacity, and the preparation method is complicated

Method used

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Embodiment Construction

[0007] From bentonite 60-85; sodium hydroxide 1-7; sodium salt 3-6; cellulose 1-5; starch 1-5; polyacrylamide 0.1-0.5; 0.5--2; composite glue 0.5--2; to form synergistic bentonite, the following preparation method is used: firstly, the bentonite is coarsely crushed, sieved, finely crushed, sieved by a sieving device with a mesh size of 200 or more, mixed with water, and then mixed The final bentonite is sent to the screw conveyor, and then sodium hydroxide and sodium salt are dissolved in water, injected into the sodium hydroxide and sodium salt solution, squeezed by the screw conveyor, and the cellulose, starch 1--5, Polyacrylamide type 0.1--0.5, positive charge glue 0.5--2, composite glue 0.5--2, add to the screw conveyor, stir and extrude evenly, the extruded strips are dried and powdered , that is.

[0008] Synergistic bentonite technical performance index comparison: 3.2% soil-made slurry of synergistic bentonite in the United States, the reading value of its φ600 revolu...

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Abstract

The invention relates to extended bentonite for drilling fluid and method for making same, wherein the bentonite comprises alta-mud, sodium hydroxide, sodium salt, cellulose, starch, polypropylene ammonia, positive electricity adhesive, composite glue, and the preparing process comprises coarse crushing, finely crushing, screening, watering and stirring, squeezing, drying, and milling.

Description

technical field [0001] The invention relates to the technical field of synergistic bentonite for drilling fluid and a preparation method thereof. Background technique [0002] The use of drilling fluid is the main means to carry cuttings and protect the well wall after the rotary drilling method is formed. The drilling fluid requires reducing the solid phase content in the drilling fluid. The solid phase comes from two aspects. One is the accumulation during the drilling process. Drilling cuttings are called useless solid phase, and the useless solid phase particles are relatively coarse. In recent years, through the improvement of solid control equipment, it has been effectively controlled. The second is to add bentonite to form mud solid phase particles when preparing drilling fluid, which is called useful solid phase. , At present, the technical performance index of the American synergistic bentonite commonly used in drilling fluids is already higher t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/42C09C3/00
Inventor 赵玉梅
Owner 赵玉梅
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