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 flui

Method used

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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

Example Embodiment

[0026] Example 1

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

[0028] Add 250 parts by weight of dimer acid (model: HY005, the manufacturer is Anqing Hongyu Chemical Co., Ltd.), 150 parts by weight of triethylene glycol monobutyl ether, and 46.87 parts by weight of diethanolamine in sequence with heating and stirring 、In the stainless steel reactor of cooling and vacuuming system, heating to 160℃ under stirring, react for 3h;

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

[0030] 150 parts by weight of triethylene glycol monobutyl ether and 30 parts by weight of propylene carbonate are added, and the mixture is evenly stirred to obtain a high-temperature resistant oil-based drilling fluid cutting agent.

Example Embodiment

[0031] Example 2

[0032] This embodiment provides a high-temperature resistant oil-based drilling fluid cutting-lifting agent. The preparation method of the high-temperature resistant oil-based drilling fluid cutting-lifting agent 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 reactor with heating, stirring, cooling, and vacuuming systems. Raise the temperature to 170°C and react for 3 hours;

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

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

Example Embodiment

[0036] Example 3

[0037] This embodiment provides a cutting-lifting agent for high-temperature resistant oil-based drilling fluid, and its preparation method 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 reactor with heating, stirring, cooling, and vacuuming systems. 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 over, cool to 80°C;

[0040] 100 parts by weight of triethylene glycol monobutyl ether and 20 parts by weight of propylene carbonate are added, and the mixture is evenly stirred to obtain a cutting lifter for high temperature resistant oil-based drilling fluid.

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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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