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Agent and method for harmless gelation treatment of well cuttings

A technology of drilling cuttings and formula, which is applied in the field of waste liquid treatment, can solve the problems of short curing cycle time, high erosion resistance and immersion resistance, and substandard leachate, and achieve short curing cycle time, high erosion resistance and immersion resistance, and consolidation Eliminate powerful effects

Inactive Publication Date: 2015-05-20
四川吉奥安欣环保科技有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the object of the present invention is to provide a medicament formula and treatment method for the harmless gelling treatment of drilling cuttings. The medicament formulation adopting the gelling treatment has a short curing cycle time, high consolidation strength, and is harmless to harmful The solidification and elimination ability of the substance is strong, and the resistance to erosion and immersion is high, which directly solves the problem that the leachate does not meet the standard

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The medicament formulation for the harmless gelation treatment of drilling cuttings in this embodiment, the formulation raw materials include the following components by weight: 5.7 parts of silicate, 6.10 parts of cement, 2.3 parts of aluminum salt, 4.7 parts of additives, calcium sulfate 2.75 parts, 0.003 parts of strengthening agent, 0.007 parts of plasticizer, 0.45 parts of sodium phosphate, 0.003 parts of sodium sulfide, 2.2 parts of destabilizing gel.

[0036] In this embodiment, the additive is coal slag, and the coal slag is replaced by one of hydrated lime, charcoal ash, calcium carbonate, and sodium carbonate in equal parts by weight, or replaced by coal slag and hydrated lime, charcoal ash, carbonic acid The mixture of calcium and sodium carbonate can obtain qualified formulations for harmless gelling treatment of drilling cuttings, and there is no obvious difference in the properties of the products obtained.

[0037] In this embodiment, the silicate is sodi...

Embodiment 2

[0043] The medicament formulation for the harmless gelation treatment of drilling cuttings in this embodiment, the formulation raw materials include the following components in parts by weight: 2 parts of silicate, 3 parts of cement, 1 part of aluminum salt, 1.5 parts of additives, calcium sulfate 1.25 parts, 0.0001 part of strengthening agent, 0.0001 part of plasticizer, 0.1 part of sodium phosphate, 0.0005 part of sodium sulfide, 0.5 part of destabilizing gel.

[0044] In this embodiment, the additive is slaked lime, and the slaked lime is replaced by one of coal slag, charcoal ash, calcium carbonate, sodium carbonate in equal parts by weight, or replaced by slaked lime and coal slag, charcoal ash, calcium carbonate , sodium carbonate mixture, all qualified drilling cuttings harmless gelling treatment formulations, the resulting product properties have no significant difference.

[0045] In this embodiment, the silicate is calcium silicate. In this embodiment, calcium silica...

Embodiment 3

[0051] The medicament formulation for the harmless gelation treatment of drilling cuttings in this embodiment, the formulation raw materials include the following components in parts by weight: 10 parts of silicate, 12 parts of cement, 5.5 parts of aluminum salt, 7.8 parts of additives, calcium sulfate 6.58 parts, 0.01 part of strengthening agent, 0.1 part of plasticizer, 1.5 parts of sodium phosphate, 0.01 part of sodium sulfide, 5.5 parts of destabilizing gel.

[0052] In this embodiment, the additive is charcoal ash, and the charcoal ash is replaced by one of slaked lime, coal slag, calcium carbonate, and sodium carbonate in equal parts by weight, or replaced by charcoal ash and slaked lime, coal slag, carbonic acid The mixture of calcium and sodium carbonate can obtain qualified formulations for harmless gelling treatment of drilling cuttings, and there is no obvious difference in the properties of the products obtained.

[0053] In this embodiment, the silicate is potassi...

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PUM

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Abstract

The invention discloses an agent for harmless gelation treatment of well cuttings. The agent comprises the following raw materials in parts by weight: silicate, cement, aluminum salt, additives, calcium sulfide, a strength accelerator, a plasticizer, sodium phosphate, sodium sulfide and a stability-breaking gel. The agent for gelation treatment has the advantages of short curing period, high consolidation strength, high consolidation elimination capability to harmful substances, and high washing and soaking resistance. The agent can be used for curing the well cuttings relatively low in moisture content, and also can be used for curing in a water soaking environment in which the cuttings are extremely high in moisture content to achieve the same good effect; the time of waiting on cement setting is extremely short; people can walk on the cured cuttings 18 hours later after curing; the cured cuttings are capable of having the cement brick hardness after being placed for about 3 days, and capable of having the clay brick hardness in about 6 days. The cured well cuttings can be applied to the backfill construction of a well site, and therefore, the earthwork cost can be saved, furthermore, the hidden danger of pollution accidents is eliminated, the oilfield ecologic environment is protected, and the investment is also saved. The agent has good economic benefit and environment benefit.

Description

technical field [0001] The invention relates to a waste liquid treatment technology, in particular to an agent formula and a use method for harmless gelation treatment of drilling cuttings. Background technique [0002] Drilling cuttings are one of the main pollutants. Drilling cuttings are a multiphase colloid system containing clay, weighted materials, various chemical treatment agents, dirty oil and drilling cuttings. If not treated, they will be discharged arbitrarily or managed , Improper handling will cause immeasurable harm to surrounding people, animals and the natural environment. At present, the cuttings in-situ harmless solidification technology is mainly used. Since the cuttings system used in the drilling process varies with the block and well depth, and different cuttings systems contain different components, the resulting drilling The composition and quantity of pollutants in waste cuttings will also change. The fixed curing process cannot be applied to all c...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B18/12
CPCY02W30/91
Inventor 李菠秦小华廖国刚杨章君王维胡宇
Owner 四川吉奥安欣环保科技有限公司
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