Treatment device and treatment method for drilling wastes
A technology for drilling waste and treatment equipment, which is applied in earthwork drilling, wellbore flushing, wellbore/well components, etc., which can solve the problems of low efficiency and poor effect of drilling waste, and reduce the risk of environmental pollution and achieve good results. Economic and social benefits, and the effect of reducing production
Active Publication Date: 2021-06-18
PETROCHINA CO LTD
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Problems solved by technology
However, the effects of the above two harmless treatment methods are not good, resulting in low efficiency of the harmless treatment of drilling waste
Method used
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[0031] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0032] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs.
[0033] In the present invention, unless stated otherwise, the used orientation words such as "upper, lower, top, bottom" are usually for the directions shown in the drawings, or for the parts themselves in the vertical, In terms of vertical or gravitational direction; similarly, for the convenience of understanding and description, "inner and outer" refer to the inner and outer relative to the outline of each component itself, but the above orientation words ...
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The invention provides a treatment device and a treatment method for drilling wastes. The treatment device comprises a waste storage unit, a gel breaking reaction unit, a rotational flow vibration separation unit, a settling-assisting flocculation reaction unit and a pressing dehydration unit, wherein the waste storage unit is used for storing the drilling wastes; the gel breaking reaction unit communicates with the waste storage unit; the rotational flow vibration separation unit communicates with the gel breaking reaction unit, and after the drilling wastes are treated by the rotational flow vibration separation unit, large solid particles and a liquid-phase turbid liquid are obtained; the settling-assisting flocculation reaction unit communicates with the rotational flow vibration separation unit, the rotational flow vibration separation unit is located between the gel breaking reaction unit and the settling-assisting flocculation reaction unit, and the settling-assisting flocculation reaction unit is used for carrying out flocculation and settling treatment on the liquid-phase turbid liquid to obtain a supernatant and small and micro solid particles; and the pressing dehydration unit communicates with the settling-assisting flocculation reaction unit, and the pressing dehydration unit is used for carrying out solidification and separation treatment on the small and micro solid particles. According to the technical scheme, the drilling wastes can be efficiently treated, and the pollution of the treated solid or liquid to the environment is small.
Description
technical field [0001] The invention relates to the field of drilling waste treatment devices, in particular to a treatment device and method for drilling waste. Background technique [0002] In recent years, with the deepening of oil and gas field development and the in-depth development of unconventional oil and gas, in order to meet the drilling needs under different complex conditions, the use of drilling fluid additives has continued to increase, making drilling waste complex and difficult to treat. Disposal is more difficult, causing considerable impact on the ecological environment of the drilling area. The annual drilling waste in my country's oil fields is about 900,000 cubic meters, of which one-third is discharged into the environment. These abandoned drilling wastes have a high concentration of pollutants and are difficult to deal with, polluting the soil, atmosphere, surface water, and groundwater in the surrounding environment, and the pools used to pile up dr...
Claims
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IPC IPC(8): E21B21/06
CPCE21B21/065E21B21/068
Inventor 李慧敏贾悦史涛周龙涛张军安静张栌丹
Owner PETROCHINA CO LTD