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Enhancer for high-temperature resistant oil-based drilling fluid as well as preparation method and application of enhancer

An oil-based drilling fluid and diesel-based drilling fluid technology, which is applied in the field of drilling fluids used in petroleum resource exploration and development technology, can solve the problems of less cutting-lifting agent products, unsatisfactory performance, and less cutting-lifting agents, etc. The effect of solving the poor rock-carrying ability and solving the settlement of barite

Inactive Publication Date: 2015-05-06
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past period of time, my country mainly focused on the research of oil-based drilling fluid core treatment agents such as organic clay, emulsifiers and fluid loss reducers. There were few studies on shear-increasing agents, and there were fewer commercial shear-increasing agent products. Performance is not as expected

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  • Enhancer for high-temperature resistant oil-based drilling fluid as well as preparation method and application of enhancer
  • Enhancer for high-temperature resistant oil-based drilling fluid as well as preparation method and application of enhancer
  • Enhancer for high-temperature resistant oil-based drilling fluid as well as preparation method and application of enhancer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] This embodiment provides a cutting agent for high temperature resistant oil-based drilling fluid, the preparation method of which includes the following steps:

[0028] 250 parts by weight of dimer acid (model: HY005, manufactured by Anqing Hongyu Chemical Co., Ltd.), 150 parts by weight of triethylene glycol monobutyl ether, and 46.87 parts by weight of diethanolamine are added successively with heating, stirring , Cooling and vacuuming system stainless steel reaction kettle, under stirring, heat up to 160°C, react for 3h;

[0029] Add 16.87 parts by weight of tetraethylenepentamine, continue to react for 3 hours, after the reaction is finished, cool down to 80°C;

[0030] Add 150 parts by weight of triethylene glycol monobutyl ether and 30 parts by weight of propylene carbonate, and stir evenly to obtain a shear lifting agent for high temperature resistant oil-based drilling fluid.

Embodiment 2

[0032] This embodiment provides a cutting agent for high temperature resistant oil-based drilling fluid, the preparation method of the cutting agent for high temperature resistant oil-based drilling fluid includes the following steps:

[0033] Add 200 parts by weight of dimer acid, 110 parts by weight of triethylene glycol monobutyl ether, and 39.2 parts by weight of diethanolamine into a stainless steel reaction kettle with heating, stirring, cooling and vacuuming systems, stir, and heat Raise the temperature to 170°C and react for 3 hours;

[0034] Add 12.9 parts by weight of diethylenetriamine, continue to react for 3 hours, after the reaction is completed, cool down to 80°C;

[0035] Add 110 parts by weight of triethylene glycol monobutyl ether and 24 parts by weight of propylene carbonate, and stir evenly to obtain a high-temperature-resistant oil-based drilling fluid cutting agent.

Embodiment 3

[0037] This embodiment provides a cutting agent for high temperature resistant oil-based drilling fluid, the preparation method of which includes the following steps:

[0038] Add 150 parts by weight of dimer acid, 100 parts by weight of triethylene glycol monobutyl ether, and 30 parts by weight of diethanolamine into a stainless steel reaction kettle with heating, stirring, cooling and vacuuming systems, stir, and heat Raise the temperature to 150°C and react for 3 hours;

[0039] Add 10 parts by weight of triethylenetetramine, continue to react for 3 hours, after the reaction is finished, cool down to 80°C;

[0040] Add 100 parts by weight of triethylene glycol monobutyl ether and 20 parts by weight of propylene carbonate, and stir evenly to obtain a high-temperature resistant oil-based drilling fluid cutting agent.

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Abstract

The invention provides enhancer for high-temperature resistant oil-based drilling fluid as well as a preparation method and application of the enhancer. The preparation method comprises the following steps: a, sequentially adding 150-250 parts by weight of dimer acids, 100-150 parts by weight of triethylene glycol momobutyl ether, 30-50 parts by weight of diethanol amine into a reaction container; stirring and performing heat reaction; b, adding 10-17 parts by weight of organic enamine for further reacting, and reducing the temperature after the reaction is finished; c, adding triethylene glycol momobutyl ether having the same weight parts in the step a and 20-30 parts by weight of propylene carbonate, uniformly stirring so as to obtain the enhancer for the high-temperature resistant oil-based drilling fluid. The invention also provides the enhancer for the high-temperature resistant oil-based drilling fluid prepared by using the preparation method and application of the enhancer in the oil-based drilling fluid. According to the enhancer, the shearing force of the oil-based drilling fluid can be improved, and the problems of barite sedimentation and poor carrying debris capability caused by low shearing force of the oil-based drilling fluid with high oil-water ratio can be solved.

Description

technical field [0001] The invention provides a high-temperature-resistant oil-based drilling fluid cutting agent and its preparation method and application, and relates to the technical field of exploration and development of oil resources in deep wells, ultra-deep wells and extended-displacement horizontal wells, in particular, it relates to the exploration and development of oil resources. The field of drilling fluids used in the development of technology. Background technique [0002] With the deepening of my country's petroleum exploration and development, more and more technical difficulties and complex situations are faced in drilling construction, such as drilling high-temperature and high-pressure deep wells, highly inclined directional wells, extended-reach horizontal wells and super water-sensitive formations. complex formation wells. Oil-based drilling fluids have some incomparable advantages over water-based drilling fluids, such as high temperature stability, h...

Claims

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Application Information

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IPC IPC(8): C09K8/035C09K8/32
CPCC09K8/32
Inventor 王茂功杨海军沈艳清张延丽
Owner BC P INC CHINA NAT PETROLEUM CORP
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