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A filter grit tank

A grit chamber and sand grit technology, applied in the direction of filtration separation, filtration circuit, separation method, etc., can solve the problem of ineffective separation of fracturing fluid and fracturing sand, reduce labor intensity and operating procedures of employees, and avoid artificial The effect of sand cleaning, high economic and social benefits

Active Publication Date: 2016-04-20
CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD CHANGQING DOWNHOLE TECH CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the problem that fracturing fluid and fracturing sand cannot be effectively separated

Method used

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Embodiment Construction

[0018] In order to realize the recovery and reuse of fracturing fluid, this embodiment provides a method such as figure 1 The filter grit chamber shown includes a tank body 1 and a liquid inlet pipe 4. The filter grit tank is divided into two areas, namely a liquid storage area 2 and a grit area 3. A filter wall 5 is set between the two areas to carry out Filtration and isolation, the filter wall 5 is composed of 40-100 mesh fine sand particles filled in the filter screen, the thickness of the filter wall 5 is 5-15cm, and the height is lower than the height of the tank body 1; the sand settling area 3 is a funnel shape with a large upper part and a smaller lower part , the front and rear of the grit chamber 3 and the side close to the filter wall 5 are all provided with a gradient slope 6 of 40°~50°, such as figure 2 As shown; the liquid inlet pipe 4 leads to the grit chamber 3, the sand outlet 7 is provided at the bottom of the side of the grit chamber 3, the liquid outlet 8...

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Abstract

The invention belongs to the technical field of filtering separation and particularly relates to a filtering sand settling tank, which comprises a tank body and a liquid inlet pipe, wherein a liquid storage area and a sand settling area are arranged in the tank body; a filtering wall is arranged between the liquid storage area and the sand settling area; the water inlet pipe is communicatedwith the sand settling area; a sand outlet is formed in the bottom of the side edge of the sand settling area; a liquid drainage opening is formed in the side edge of the liquid storage area. The filtering sand settling tank provided by the invention has the benefits as follows: the requirement of recycling fracturing fluid is met, the construction requirements of green testing for oil at present are met, the sand settling area adopts a funnel-shaped structure, so that the sand settling area can be cleaned directly, manual sand removal is avoided, labor strength of site staff and operation process are reduced greatly, and the filtering sand settling tank has higher economic and social benefits on the aspects of energy conservation and consumption reduction, environmental protection, and intrinsic safety.

Description

technical field [0001] The invention belongs to the technical field of filtration and separation, and in particular relates to a filter grit chamber. Background technique [0002] At present, due to the sharp increase in the number of horizontal wells in oilfield development, the amount of fracturing fluid and fracturing sand used in the sandblasting and perforating stage of horizontal wells is extremely large. If the waste fracturing fluid is directly discharged, it will cause waste of resources and does not meet the current energy saving requirements for construction. The development needs of consumption reduction and green environmental protection. Contents of the invention [0003] The purpose of the present invention is to overcome the problem that fracturing fluid and fracturing sand cannot be effectively separated. [0004] For this reason, the present invention provides a filter grit chamber, comprising a tank body and a liquid inlet pipe, the inside of the tank b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D36/04
Inventor 白明伟赵维斌毛智平刘润才曹欣王芳远梁陇霞周建柱叶忠汉王振郝兰香彭亮
Owner CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD CHANGQING DOWNHOLE TECH CO
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