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A kind of bentonite drilling fluid and preparation method thereof

A technology of bentonite and drilling fluid, applied in chemical instruments and methods, drilling composition and other directions, can solve the problems of pulping rate, chemical stability and insufficient wall protection performance, exposed ribs, wall settlement and other problems

Active Publication Date: 2021-05-07
上海勃利燃气设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the main raw material of drilling fluids commonly used in the market is bentonite, but conventional bentonite drilling fluids have serious deficiencies in terms of slurrying rate, chemical stability, and retaining wall performance. Water seepage occurs in joints due to mud inclusion, resulting in problems such as large-area exposed ribs and wall settlement

Method used

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  • A kind of bentonite drilling fluid and preparation method thereof
  • A kind of bentonite drilling fluid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1: A kind of bentonite drilling fluid, each component and its corresponding parts by weight are as shown in Table 1, and are prepared through the following steps:

[0041] Step 1: Add sodium-based bentonite to water, stir for 0.5 hours under heating conditions, the heating temperature is 45°C, and then perform curing for 12 hours to obtain the base slurry;

[0042] Step 2, add octadecyl dimethyl benzyl ammonium chloride, magnesium chloride, hydroxymethyl cellulose, polyacrylamide and microemulsion WR-I to the base slurry in turn, and carry out high-speed stirring and mixing at a speed of 800rpm for 0.5 h, to obtain bentonite drilling fluid.

Embodiment 2-6

[0043] Example 2-6: a bentonite drilling fluid, the difference from Example 1 is that each component and its corresponding parts by weight are shown in Table 1.

[0044] Each component and parts by weight thereof in table 1 embodiment 1-6

[0045]

Embodiment 7

[0046] Embodiment 7: A kind of preparation method of bentonite drilling fluid, the difference with embodiment 1 is, in step 2, add 0.45 parts of octadecyl dimethyl benzyl ammonium chloride, 0.55 parts of Magnesium chloride, 0.2 parts of hydroxyethyl cellulose, 2 parts of polyacrylamide and 1 part of microemulsion WR-I were stirred and mixed at a high speed of 800 rpm for 0.5 h to obtain bentonite drilling fluid.

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Abstract

The invention discloses a bentonite drilling fluid and a preparation method thereof, and relates to the technical field of drilling and exploitation. The technical point is: a bentonite drilling fluid, comprising the following components in parts by weight: water: 100 parts; bentonite: 8-10 parts; amine compounds: 2-6 parts; cellulose additives: 0.2-1 part ; Lubricant: 1-4 parts; Synergist: 1-2 parts, the invention has the advantages of reducing filtration loss, strong wall-protecting ability and good blocking performance.

Description

technical field [0001] The invention relates to the technical field of drilling and production, more specifically, it relates to a bentonite drilling fluid and a preparation method thereof. Background technique [0002] Drilling fluid is a general term for various circulating fluids that meet the needs of drilling work with its multiple functions during the drilling process. Drilling fluid can be divided into clear water, mud, clay-free flushing fluid, emulsion, foam and compressed air according to its composition. Clear water is the earliest drilling fluid, it does not need to be treated, it is easy to use, and it is suitable for areas with complete rock formations and sufficient water sources. Mud is a widely used drilling fluid. It is mainly suitable for unstable rock formations with loose walls, developed cracks, easy to collapse and drop blocks, and swelled and spalled when exposed to water. [0003] At present, the main raw material of drilling fluids commonly used i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/24C09K8/514
CPCC09K8/24C09K8/514C09K2208/12C09K2208/28C09K2208/34
Inventor 赵廷全
Owner 上海勃利燃气设备有限公司
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