Sulfur-fixing combustion-supporting high-temperature profile control agent, and preparation method and application thereof

A profile control agent, high temperature technology, applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of other components not being recycled, crude oil not being fully recovered, and the difficulty of harmless treatment. , to achieve good application prospects, saving profile control costs, and good suspension.

Active Publication Date: 2017-06-13
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Liaohe Oilfield produces a large amount of sewage sludge and silicon sludge every year. Due to its complex composition, it is difficult to separate crude oil from sludge and silicon sludge. The existing technology has high processing costs and difficulties in harmless treatment, resulting in insufficient recovery of crude oil. Others Components are not recycled

Method used

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  • Sulfur-fixing combustion-supporting high-temperature profile control agent, and preparation method and application thereof
  • Sulfur-fixing combustion-supporting high-temperature profile control agent, and preparation method and application thereof
  • Sulfur-fixing combustion-supporting high-temperature profile control agent, and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0061] This embodiment provides a sulfur-fixing, combustion-supporting, high-temperature profile control agent, which is prepared from the following raw materials, based on the total weight of the sulfur-fixing, combustion-supporting, high-temperature profile-controlling agent as 100%:

[0062]

[0063]

[0064] The sulfur-fixing combustion-supporting high-temperature profile control agent provided in this example is prepared according to the following steps:

[0065] (1) Add an appropriate amount of water and polyanionic cellulose into the reaction kettle, and stir for 15 minutes at normal temperature;

[0066] (2) Add soft sludge, silica mud and low-sulfur coal powder to the reaction kettle solution obtained in the above step (1) successively, and stir for 20 minutes at normal temperature;

[0067] (3) Add sodium bentonite, sodium α-olefin sulfonate and sodium tripolyphosphate successively to the reactor solution obtained in the above step (2), and stir for 12 minutes ...

Embodiment 2

[0080] This embodiment provides a sulfur-fixing, combustion-supporting, high-temperature profile control agent, which is prepared from the following raw materials, based on the total weight of the sulfur-fixing, combustion-supporting, high-temperature profile-controlling agent as 100%:

[0081]

[0082] The sulfur-fixing combustion-supporting high-temperature profile control agent provided in this example is prepared according to the following steps:

[0083] (1) Add appropriate amount of water and polyanionic cellulose into the reaction kettle, and stir for 10 minutes at normal temperature;

[0084] (2) Add soft sludge, silica mud and low-sulfur coal powder to the reaction kettle solution obtained in the above step (1) successively, and stir for 15 minutes at normal temperature;

[0085] (3) Add sodium bentonite, sodium α-olefin sulfonate and sodium tripolyphosphate successively to the reactor solution obtained in the above step (2), and stir for 12 minutes at normal tempe...

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Abstract

The invention provides a sulfur-fixing combustion-supporting high-temperature profile control agent, and a preparation method and application thereof. By taking the total weight of the sulfur-fixing combustion-supporting high-temperature profile control agent as 100%, the profile control agent is prepared from the following raw materials in percentage by weight: 3-5% of soft oil sludge, 2-4% of silicon sludge, 1-2% of low sulfur coal powder, 0.8-1.5% of sodium bentonite, 0.5-1.2% of plant fiber particle, 0.2-0.3% of saltpetre powder, 0.1-0.2% of coal gangue powder, 0.2-0.4% of limestone powder, 0.1-0.2% of polyanionic cellulose, 0.08-0.15% of alpha-sodium olefinsulfonate, 0.1-0.2% of sodium tripolyphosphate and the balance of water. The profile control agent has favorable stratum compatibility, causes no damage to the oil reservoir, does not pollute the stratum, and has favorable temperature tolerance; and meanwhile, the profile control agent has sulfur-fixing and combustion-supporting functions, thereby being completely applicable to a profile control technology for a thick oil fireflood chemical profile control gas injection well.

Description

technical field [0001] The invention relates to a sulfur-fixing, combustion-supporting high-temperature profile control agent and a preparation method and application thereof, belonging to the technical field of oilfield chemistry. Background technique [0002] Soft sludge refers to the high oily sludge produced by oil tanks, settling tanks, and sewage tanks in the combined station of the oil production plant; silicon sludge is the product of sludge after processing. Soft sludge and silicon sludge have become one of the main pollutants produced during oilfield development. In recent years, due to the gradual improvement of my country's environmental protection regulations and the requirements of the group company to create green development, the issue of sludge treatment has increasingly attracted people's attention. Liaohe Oilfield produces a large amount of sewage sludge and silicon sludge every year. Due to its complex composition, it is difficult to separate crude oil f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/588C09K8/467
CPCC09K8/467C09K8/588C09K2208/08
Inventor 刘强张洪君王浩龙华滕立勇李瑞马昌明于晓聪王尧白龙匡旭光王磊冷冰周培杰肖家宏段强国管紫君
Owner PETROCHINA CO LTD
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