Coagulation composite sealing agent

A plugging agent and content technology, which is applied in the field of drilling and loss-stopping agents, can solve the problems of reducing the effect of pressure-bearing loss-stopping in broken strata, repairing and condensing on the well wall of unbreakable strata, affecting operation procedures and oil production, etc. High, adjustable coagulation performance, safe construction effect

Active Publication Date: 2010-04-14
DONGYING TAIER GASOLINE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional plugging agents are generally chemical gel plugging methods such as bridge slurry plugging, bridge plugging, and diesel bentonite slurry plugging. Although they also play a certain role, they have the following shortcomings or deficiencies: ①During the plugging construction, it is impossible to Condensation Repairing the Borehole Wall of Leaky Formation
②For

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0014] Five. Specific implementation methods: a coagulation type composite plugging agent, its composition and content, the content is in parts by weight:

[0015] Sodium silicate 3-6; Potassium silicate 2-4; Magnesium oxide 10-20; Calcium carbonate 20-30; Shell powder 15-30; Calcium oxide 5-10

[0016] Preparation method: the materials of the above components are mixed and stirred evenly under normal temperature and pressure.

[0017] Provide following specific examples below, its component and content, content is weight part:

[0018] Case 1

[0019] Sodium silicate 3 Potassium silicate 2 Magnesium oxide 10 Calcium carbonate 20 Shell powder 15 Calcium oxide 5. Mix and stir evenly at normal temperature and pressure.

[0020] Case 2

[0021] Sodium silicate 4 Potassium silicate 3 Magnesium oxide 15 Calcium carbonate 25 Shell powder 20 Calcium oxide 6. Mix and stir evenly at normal temperature and pressure.

[0022] Case 3

[0023] Sodium silicate 5 Potassium silicate 3....

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PUM

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Abstract

The invention discloses a coagulation composite sealing agent, which comprises components in percentage by weight: sodium silicate 3-6, potassium silicate 2-4, magnesium oxide 10-20, calcium carbonate 20-30, shell powder 15-30 and calcium oxide 5-10, which are evenly mixed and stirred under normal temperature and pressure. The invention is characterized by repairing and coagulating fractures, not bearing the pressure of leakage stratum well walls, being capable of freely pumping, forming concretion substances coagulated on easy broken well walls of leakage channels and leakage fractures and the like. The sealing agent is extensively applicable to petroleum and geology boring projects, in particular to application in bearing and leak-stopping processes of low-voltage brokenness stratums, reef limestone stratums and fracture stratums.

Description

1. Technical field [0001] The invention relates to a drilling plugging agent, in particular to a coagulation type composite plugging agent. 2. Background technology [0002] The treatment of lost circulation is a major technical problem in oil drilling, especially the problem of lost circulation in complex wells is particularly difficult. Conventional plugging agents are generally chemical gel plugging methods such as bridge slurry plugging, bridge plugging, and diesel bentonite slurry plugging. Although they also play a certain role, they have the following shortcomings or deficiencies: ①During the plugging construction, it is impossible to Condensation repairs the borehole wall of the lost formation. ②For broken formations, which are prone to collapse and lost circulation, especially for formations with poor cementation at low pressure, the borehole wall of the broken formation cannot be repaired and condensed; Plugging, thus directly reducing the pressure-bearing pluggi...

Claims

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Application Information

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IPC IPC(8): C09K8/42
Inventor 隋跃华关芳刘军成效华于继彬刘全江张帅葛磊隋胜利隋彩云李章启
Owner DONGYING TAIER GASOLINE TECH
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