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White asphalt for drilling fluid and method for preparing white asphalt for drilling fluid

A technology of drilling fluid and white asphalt, which is applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of complex preparation process and increased viscosity of drilling fluid, and achieve simple preparation process, good plugging of cracks, The effect of high environmental performance

Active Publication Date: 2013-04-03
河北华运鸿业化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation process of this invention is relatively complicated, and the prepared anti-slump agent will increase the viscosity of the drilling fluid after being dissolved in the drilling fluid.

Method used

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  • White asphalt for drilling fluid and method for preparing white asphalt for drilling fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] First, add accurately weighed 40kg of paraffin, 20kg of stearic acid, 1kg of alkylphenol polyoxyethylene ether, and 4kg of polyethylene glycol into the reaction kettle, raise the temperature of the reaction kettle to 70°C, and stir at constant temperature for 30 minutes; Add 4kg of polyacrylamide to the kettle, and continue to stir at a constant temperature for 30 minutes; finally add 20kg of light calcium carbonate, and continue to stir at a constant temperature for 0.5 hours; the product is obtained by spray granulation.

Embodiment 2

[0021] First, add accurately weighed 50kg of paraffin wax, 30kg of stearic acid, 2kg of alkylphenol polyoxyethylene ether, and 5kg of polyethylene glycol into the reactor, raise the temperature of the reactor to 80°C, and stir at constant temperature for 20 minutes; Add 4.5kg of polyacrylamide to the kettle, and continue to stir at a constant temperature for 40 minutes; finally add 25kg of light calcium carbonate, and continue to stir at a constant temperature for 2 hours; the product is obtained by spray granulation.

Embodiment 3

[0023] First, accurately weighed 45kg of paraffin, 25kg of stearic acid, 1.5kg of alkylphenol polyoxyethylene ether, and 4.5kg of polyethylene glycol were added to the reactor, and the reactor was heated to 90°C and stirred at a constant temperature for 40 minutes; Add 5kg of polyacrylamide into the above reaction kettle, continue to stir at constant temperature for 20 minutes; finally add 30kg of light calcium carbonate, continue to stir at constant temperature for 1 hour; obtain the product through spray granulation.

[0024] The comparison of various performance indicators between the white asphalt prepared in Examples 1-3 and Q / HBZJ-006-2005 is shown in Table 1.

[0025] Table 1 Various performance indicators of white bitumen used in drilling fluid

[0026]

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Abstract

The invention discloses white asphalt for drilling fluid and a method for preparing the white asphalt for drilling fluid. The white asphalt is prepared from the following raw materials in parts by weight: 40 parts-50 parts of paraffin, 1 part-2 parts of alkylphenol polyoxyethylene ether, 4 parts-5 parts of polyethylene glycol, 4 parts-5 parts of polyacrylamide, 20 parts-30 parts of stearic acid and 20 parts-30 parts of light calcium carbonate. The method for preparing the white asphalt comprises the following steps: adding the paraffin, alkylphenol polyoxyethylene ether, polyethylene glycol and stearic acid into a reactor proportionally; raising the temperature of the reactor to 70 DEG C-100 DEG C, and then stirring for 20-40 minutes at constant temperature; adding polyacrylamide to be stirred for 30 minutes at constant temperature; and finally, uniformly adding light calcium carbonate to be stirred for 0.5-2 hours at constant temperature and then discharging, and carrying out spray granulation to obtain the white asphalt. The white asphalt does not damage a hydrocarbon reservoir, has good lubricating performance and prevents collapse and blockage, filtration can be effectively reduced, the capacity of oil-gas wells is improved, and the technical problems of easily generated loss, collapse and the like during a drilling process when stratums with complicated conditions are drilled are solved.

Description

technical field [0001] The invention relates to an anti-slump agent for drilling fluid and a preparation method thereof, in particular to white pitch for drilling fluid and a preparation method thereof. Background technique [0002] Drilling fluid is a working fluid that can carry cuttings, cool and lubricate drill bits, balance formation pressure, protect wellbore stability and protect oil layers from damage during drilling. Its performance directly affects drilling efficiency and downhole safety. And cost control is an important part of drilling engineering technology. With the increase of drilling depth, the deterioration of wellbore instability and the increasing difficulty of oil and gas layer protection, the performance requirements of drilling fluid are getting higher and higher. In particular, it is required that the drilling fluid can effectively maintain the stability of the borehole wall and at the same time protect the oil and gas layers well. Therefore, it is ...

Claims

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Application Information

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IPC IPC(8): C09K8/035
Inventor 张占山张学良张学军
Owner 河北华运鸿业化工有限公司
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