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Inorganic salt dual fluid profile control agent and profile control method thereof

A technology of inorganic salts and profile control agents, applied in chemical instruments and methods, earthwork drilling, mining fluids, etc., can solve problems such as poor profile control effects, and achieve the effect of colloidal structure stability and strength enhancement

Inactive Publication Date: 2013-07-31
大庆市慧灵石油科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One object of the present invention is to provide an inorganic salt two-liquid profile control agent, and another object of the present invention is to provide a profile control method for this inorganic salt two-liquid profile control agent, which is used to solve the problem of poor profile control effect through single liquid injection good question

Method used

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  • Inorganic salt dual fluid profile control agent and profile control method thereof
  • Inorganic salt dual fluid profile control agent and profile control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] This poly-inorganic salt two-liquid method profile control agent is composed of a profile control mother liquid and a low-temperature compound agent. The profile control mother liquid is a milky white liquid, non-toxic, tasteless, and colorless and transparent after being dissolved in water; It is white powder, soluble in water, non-toxic.

[0020] The preparation process of profile control mother liquor is as follows:

[0021] The profile control mother liquor consists of 32% by weight of silicon powder, 14% of potassium carbonate, 8% of sodium tripolyphosphate, 17% of zinc oxide, 2% of aluminum oxide, 2% of aluminum phosphate, and 25% of soda ash, mixed in a mixer for 40 Minutes, then put into high temperature furnace to heat to 1500-1700°C, then add water to cool to form a crystal product, and finally alcoholize and dissolve to Baume degree 40°C to form;

[0022] The preparation process of the low-temperature compound is as follows: the low-temperature compound is c...

Embodiment 2

[0024] This poly-inorganic salt two-liquid method profile control agent is composed of a profile control mother liquid and a low-temperature compound agent. The profile control mother liquid is a milky white liquid, non-toxic, tasteless, and colorless and transparent after being dissolved in water; It is white powder, soluble in water, non-toxic.

[0025] The preparation process of profile control mother liquor is as follows:

[0026] The profile control mother liquor consists of 33% by weight of silicon powder, 13% of potassium carbonate, 9% of sodium tripolyphosphate, 16% of zinc oxide, 4% of aluminum oxide, 2% of aluminum phosphate, and 23% of soda ash, mixed in a mixer for 40 Minutes, then put into a high temperature furnace to heat to 1500-1700°C, then add water to cool, to form a crystal-like product, and finally alcoholize and dissolve to 40°C Baume to form;

[0027] The preparation process of the low-temperature compound is as follows: the low-temperature compound con...

Embodiment 3

[0045] This poly-inorganic salt two-liquid method profile control agent is composed of a profile control mother liquid and a low-temperature compound agent. The profile control mother liquid is a milky white liquid, non-toxic, tasteless, and colorless and transparent after being dissolved in water; It is white powder, soluble in water, non-toxic.

[0046] The preparation process of profile control mother liquor is as follows:

[0047] The profile control mother liquor consists of 34% by weight of silicon powder, 12% of potassium carbonate, 10% of sodium tripolyphosphate, 15% of zinc oxide, 2% of aluminum oxide, 3% of aluminum phosphate, and 24% of soda ash, mixed in a mixer for 40 Minutes, then put into high temperature furnace to heat to 1500-1700°C, then add water to cool to form a crystal product, and finally alcoholize and dissolve to Baume degree 40°C to form;

[0048] The preparation process of the low-temperature compound is as follows: the low-temperature compound is ...

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Abstract

The invention relates to an inorganic dual fluid profile control agent and a profile control method thereof. The inorganic dual fluid profile control agent is formed from a profile control mother liquid and a low temperature complex agent, wherein the profile control mother liquid is obtained by mixing 32-34% of silicon powder, 12-14% of potassium carbonate, 8-10% of sodium tripolyphosphate, 15-17% of zinc oxide, 2-4% of aluminium oxide, 1-3% of aluminium phosphate and 23-25% of soda ash in weight proportion for 40 minutes, adding a mixture into a high temperature furnace and heating to the temperature of 1500-1700 DEG C, adding the mixture into water to be cooled, generating a crystalline product, alcoholising and dissolving until baume degree is 40 degrees; and the low temperature complex agent is white powder formed by mixing 25-27% of boric acid, 30-32% of potassium tripolyphosphate, 26-28% of sodium hexametaphosphate and 15-17% of potassium chloride in weight proportion at normaltemperature. The inorganic dual fluid profile control agent provided by the invention is small nanoscale particles, the particles are thrown into a shaft, and reaction is carried out to generate a larger colloid group, thus a large channel and a large crack at a rock layer under the shaft are blocked, problems of injection failure and plugging failure are not existed, and the problems in the current oil field profile control are well solved.

Description

1. Technical field: [0001] The invention relates to a profile control agent used in oil field chemical water plugging and profile control technology in petroleum engineering, in particular to an inorganic salt two-liquid profile control agent and a profile control method thereof. 2. Background technology: [0002] As the water cut in the oilfield continues to rise, it is proposed to adjust the water absorption profile in the deep part of the reservoir, force the liquid flow to divert, increase the swept volume, and improve the water injection development effect, thus forming a new hotspot in deep profile control research. Oilfield water plugging and profile control technologies mainly include: weak gel control and displacement technology; heavy oil thermal recovery well high temperature profile control technology; deep and ultra-deep well water plugging and profile control technology; profile control and water plugging technology for polymer injection reservoirs; Water plugg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/42E21B43/22
Inventor 桑景堂侯燕祥曹立巍
Owner 大庆市慧灵石油科技有限公司
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