Rock breaking agent for stabilizing well walls and preparation method thereof

A technology for stabilizing well walls and breaking rocks, applied in the field of high-efficiency rock-breaking agents and their preparation, to achieve the effects of enhancing rock strength, reducing development risks, and reducing rock strength

Active Publication Date: 2012-04-04
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

[0004] At present, in oil and gas exploration and development, there is a lack of mechanism research and drilling fluid treatment agent research and development for drilling while simultaneously taking into account efficient rock breaking and wellbore stability. Therefore, it is necessary to develop a set that can effectively reduce formation rock strength instantly and is beneficial A drilling fluid technology system with stable wellbore walls is of great significance for improving the exploration and development benefits of oil and gas wells

Method used

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  • Rock breaking agent for stabilizing well walls and preparation method thereof
  • Rock breaking agent for stabilizing well walls and preparation method thereof
  • Rock breaking agent for stabilizing well walls and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] A kind of high-efficiency rock-breaking agent (WGP) for stabilizing well walls, comprising 80 parts by mass of plant protein, 180 parts by mass of water, 50 parts by mass of phosphorus oxychloride (POCl 3 ) solution, 20 parts by mass of mercapto polyether polyol, 30 parts by mass of dioctyl sulfosuccinate, 16 parts by mass of sulfonating agent, n-hexane and a pH regulator.

[0061] A kind of manufacturing process of synthesizing this stable borehole wall efficient rock breaking agent (WGP):

[0062] 1) Weigh the vegetable protein and add it to water, let it stand at room temperature for 100 minutes, then shake it evenly at a constant temperature of 45°C;

[0063] 2) Take the above solution at 40°C, weigh the sulfonating agent, add it dropwise, and stir at constant temperature for 60 minutes;

[0064] 3) Heat the above solution in a water bath to 80° C., and adjust the pH value of the solution to 7 with a pH regulator;

[0065] 4) dissolving phosphorus oxychloride in n...

Embodiment 2

[0072] A rock breaking agent (WGP) for stabilizing well walls, comprising 100 parts of plant protein, 200 parts of water, 65 parts of phosphorus oxychloride (POCl 3 ) n-hexane solution, 40 parts of mercapto polyether polyols, 40 parts of dioctyl sulfosuccinate, 24 parts of sulfonating agent pH regulator.

[0073] A kind of manufacturing process of synthesizing this stable borehole wall efficient rock breaking agent (WGP):

[0074] 1) Weigh the vegetable protein and add it to water, let it stand at room temperature for 140 minutes, then shake it evenly at a constant temperature of 60°C;

[0075] 2) Take the above solution at 60°C, weigh the sulfonating agent, add it dropwise, and stir at constant temperature for 80 minutes;

[0076] 3) Heat the above solution in a water bath to 100° C., and adjust the pH value of the solution to 9 with a pH regulator;

[0077] 4) dissolving phosphorus oxychloride in n-hexane to form a 20% phosphorus oxychloride solution, weighing the phosphor...

Embodiment 3

[0084] The high-efficiency rock-breaking agent for stabilizing the well wall consists of 90 parts of vegetable protein, 190 parts of water, 60 parts of n-hexane solution of phosphorus oxychloride with a mass concentration of 20%, 30 parts of mercapto polyether polyol, 35 parts by mass. Parts of dioctyl sulfosuccinate, 20 parts of sulfonating agent and pH regulator.

[0085] The preparation method of stable well wall rock-breaking agent is characterized in that:

[0086] 1) Weigh the vegetable protein and add it to water, let it stand at room temperature for 120 minutes, then shake it evenly at a constant temperature of 50°C;

[0087] 2) Weigh the above solution at 50°C, weigh the sulfonating agent, add it dropwise, and stir at constant temperature for 70 minutes;

[0088] 3) Heat the above solution in a water bath to 90° C., and adjust the pH value of the solution to 8 with a pH regulator;

[0089] 4) dissolving phosphorus oxychloride in n-hexane to form a 20% phosphorus oxy...

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Abstract

The invention relates to a rock breaking agent for stabilizing well walls and a preparation method thereof. The rock breaking agent consists of the following components in part by mass: 80 to 100 parts of plant protein, 180 to 200 parts of water, 50 to 65 parts of 20 mass percent n-hexane solution of phosphorus oxychloride, 20 to 40 parts of sulphydryl polyether polyol, 30 to 40 parts of sulfonated dioctyl succinate, 16 to 24 parts of sulfonating agent and pH regulator. The efficient rock breaking agent for stabilizing the well walls can instantaneously and effectively reduce the strength of stratum rock, is favorable for stabilizing the well walls, and improves the drilling speed so as to reduce the exploratory development cost, protect the oil-gas layer and improve the recovery rate.

Description

technical field [0001] The invention relates to a high-efficiency rock breaking agent (WGP) for stabilizing well walls and a preparation method thereof. Background technique [0002] The object of petroleum engineering operations is the rock buried thousands of meters deep underground. The rock breaking effect is an important technical issue in oil drilling, which reflects the drilling speed. Drilling speed is a key factor affecting the benefits of oilfield exploration and development. Improving drilling speed can greatly reduce drilling costs and speed up the exploration and development process. It is also an urgent problem to be solved in the process of drilling deep and ultra-deep wells. At the same time, the improvement of drilling speed can reduce the time of drilling fluid soaking in oil and gas layers, reduce the damage of drilling fluid to reservoirs, and help discover oil and gas layers and greatly increase recovery. [0003] An important aspect of rock mechanics r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/68C09K8/575
Inventor 孙金声杨宇平蒋欢
Owner BC P INC CHINA NAT PETROLEUM CORP
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