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Environmental-friendly organic profile control agent and preparation method and use thereof

A profile control agent, organic technology, applied in the field of oil and gas development, can solve the problems of strong adhesion, low density and high density of water blocking agent

Active Publication Date: 2015-09-23
DAQING TIANMAN PETROCHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] CN101712863A discloses a water shutoff agent for carbonate rock oil wells. The water shutoff agent is composed of the following raw materials in parts by weight: 5-14 parts of cement, 4-8 parts of quartz, 0.1-0.5 parts of cement flocculant, reduced density 4-11 parts of water blocking agent, 1-2 parts of grid structure agent, and 72-74 parts of water. The water blocking agent has strong bonding and low density, and is suitable for carbonate rock oil wells with high temperature and high salinity. environment, so that it can solve the problems of water shutoff agents in related technologies that are not suitable for high-temperature and high-salinity environments, have poor adhesiveness, high density, and cannot effectively control water and increase oil recovery.

Method used

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  • Environmental-friendly organic profile control agent and preparation method and use thereof
  • Environmental-friendly organic profile control agent and preparation method and use thereof
  • Environmental-friendly organic profile control agent and preparation method and use thereof

Examples

Experimental program
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Effect test

preparation example 1

[0078] S1: In the presence of sodium sulfide, m-diisopropylbenzene is oxidized with continuously fed oxygen at 30°C in a reaction kettle, and the reaction time is 50 minutes, thereby obtaining diisopropylbenzene peroxide; Then add an appropriate amount of hydrochloric acid aqueous solution with a concentration of 15% by mass percentage, fully stir to obtain the intermediate reaction product and acetone, and remove the acetone;

[0079] Wherein the mass ratio of sodium sulfide and m-diisopropylbenzene is 0.2:100;

[0080] S2: Add formaldehyde aqueous solution with a mass percent concentration of 25% to the intermediate reaction product for reaction, the reaction time is 6 hours, and the reaction temperature is 50°C; after the reaction is completed, the water layer is removed, and then a mixture of acetone and ethanol is added to the remaining system. volume mixture and water, fully stirred evenly, to obtain the cross-linking solution, which is named JL1;

[0081] Wherein the mol...

preparation example 2-7

[0085] Except that the inorganic base in the crosslinking solution preparation example 1 is replaced by KOH, NaOH, sodium carbonate, sodium sulfate, potassium carbonate or sodium phosphate respectively by sodium sulfide respectively, other operations are all unchanged, thus the corresponding crosslinking solution obtained, Named sequentially as JL2-JL7.

[0086] Preparation Example of Ternary Metal Composite Particles

[0087] (1) prepare respectively the magnesium nitrate aqueous solution of 1mol / L, the aluminum sulfate aqueous solution of 1mmol / L and the potassium chloride aqueous solution of 1mmol / L;

[0088] (2) Slowly add NaOH aqueous solution in sodium phosphate aqueous solution, the aqueous solution that preparation NaOH concentration is 2mol / L and sodium phosphate concentration is 0.5mol / L;

[0089] (3) Add the magnesium nitrate aqueous solution, aluminum sulfate aqueous solution and potassium chloride aqueous solution of step (1) sequentially to the aqueous solution ...

preparation example

[0092] 1, bentonite was calcined at 550° C. for 25 minutes, then cooled to room temperature, and pulverized, ground, and crossed a 300 mesh sieve to obtain bentonite powder;

[0093] II. Stir bentonite powder, dimethyl dodecyl ammonium chloride and deionized water evenly, react at 55°C for 150 minutes, then filter and vacuum dry to obtain the modified bentonite, which is named PRT;

[0094] Wherein, the mass ratio of bentonite powder, dimethyl dodecyl ammonium chloride and deionized water is 1:2:15.

[0095] Silicic acid polymetallic salt preparation example 1

[0096] (1) Adding an aqueous solution of sulfuric acid with a mass percentage concentration of 15% to a sodium silicate aqueous solution with a mass percentage concentration of 2% to adjust pH=4-5, then stirring at room temperature for 20 minutes to obtain an acidic aqueous solution;

[0097] (II) Add aluminum sulfate, zinc nitrate and titanium chloride to the acidic aqueous solution, and stir evenly, then heat up to ...

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Abstract

The invention relates to an environmental-friendly organic profile control agent. The environmental-friendly organic profile control agent comprises partially hydrolyzed polyacrylamide, a crosslinking solution, a ternary metal compound particles, an accelerant, additives, modified bentonite, auxiliaries, a complexing agent, polymetal silicate and water. The invention further provides a preparation method and use of the profile control agent. According to the profile control agent provided by the invention, the most excellent performances are obtained by proper selection of the components, a unique process of the preparation method and the like, so that the profile control agent has good application prospect and industrial potential in the field of petroleum industry.

Description

technical field [0001] The present invention relates to a profile control agent composition used to improve petroleum products in oilfield exploitation and development and its preparation method and application, more particularly to an environmentally friendly organic profile control agent and its preparation method and application, which belong to oil and gas development technology field. Background technique [0002] In oil exploitation in the field of oil development, with the extension of the oil well production period, the increase of water output is a common problem encountered, and the use of profile control agents, especially water shutoff agents, can significantly increase oil recovery, thereby improving economic benefits , and can maximize the life of oil wells and production years. [0003] With the advancement of science and technology, countries all over the world have developed various water blocking technologies suitable for their respective geological charac...

Claims

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Application Information

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IPC IPC(8): C09K8/512
CPCC09K8/5083C09K8/512C09K2208/10
Inventor 蔡庚霖马国华
Owner DAQING TIANMAN PETROCHEM CO LTD
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