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Oil gas field waste drilling fluid drill chip innocent treatment agent and method

A treatment agent and drilling fluid technology, which is applied in the field of harmless treatment agent for waste drilling fluid drilling cuttings in oil and gas fields, can solve the problems of occupying arable land, need to be treated multiple times, and long treatment time, and achieves control of treatment costs and loose drilling cuttings structure. , beneficial to plant growth

Inactive Publication Date: 2008-01-02
李华明
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

The disadvantages of these methods are mainly: (1) high treatment cost and large amount of treatment agent; (2) still occupying cultivated land; (3) there are still hidden dangers of pollution to soil or groundwater; (5) These methods can only be applied to one of water-based or oil-based drilling fluids, and cannot be applied to both drilling fluids at the same time

Method used

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  • Oil gas field waste drilling fluid drill chip innocent treatment agent and method

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Embodiment

[0033] Example: the data of harmless treatment in a certain well.

[0034] (1): The drilling fluid system used in drilling is polymer dispersed drilling fluid, and the completion depth is 2114 meters. The drilling fluid includes 76.5 tons of barite powder, 1.5 tons of sodium carbonate, 0.5 tons of chromium-free lignin, 0.29 tons of CMC, 0.5 tons of K-PHP, 2.5 tons of FT-881, 3 tons of caustic soda, and 4.8 tons of iron-chromium lignosulfonate 15.7 tons of RT-001, 0.357 tons of MA-871, 0.2 tons of safflower powder, and a total of about 600 tons of drilling cuttings and waste drilling fluid.

[0035] (2): The addition ratio of liquid treatment agent is 8%, and the addition ratio of solid treatment agent is 4% (Note: According to the prior inspection, this amount can ensure that after treatment, the product meets GB5085.1-1996 "Hazardous Waste Identification Standard" -Leach Toxicity Identification", GB5085.3-1996 "Identification Standard for Hazardous Waste-Corrosive Identifica...

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Abstract

The invention discloses an innocent treatment additive of drill chip of waste oil gas drilling liquid, which comprises the following parts: solid additive and liquid additive, wherein the liquid additive is composed of 45-47% magnesium chloride, 45-47% calcium chloride and 6-10% polyaluminium chloride; the solid additive contains 60-70% coal ash and 30-40% phosphate fertilizer. The invention adsorbs and solidifies the harmful organics and heavy metal ion to neutralize alkaline of drilling liquid, which reduces the cost to fit for waste water-based and oil-based drilling liquid.

Description

technical field [0001] The invention relates to a harmless treatment agent and a treatment method for waste drilling fluid drilling cuttings in oil and gas fields, which can treat drilling waste emissions to meet environmental protection requirements. Background technique [0002] Waste drilling fluid and drilling cuttings contain a large amount of toxic substances, the main components of which are hydrocarbons, salts, various polymers, impurities in barite, asphalt and other modified substances, oils, high pH value and heavy metal salts Classes (such as mercury, arsenic, chromium, cadmium, lead, etc.), etc., are serious sources of environmental pollution. At present, oilfield drilling waste discharges are mainly stacked in earthen ponds, naturally air-dried, and buried with soil, which seriously pollutes the environment. For this reason, every domestic oil field pays a huge amount of sewage charges every year, and simultaneously occupies tens of hectares of national arable...

Claims

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Application Information

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IPC IPC(8): C09K3/00B09B3/00C02F11/00C02F1/52C02F1/62C05F7/00
CPCY02A40/20
Inventor 李华明
Owner 李华明
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