A Closed Pump Electric Sand Mixing Skid

Abstract

The invention relates to the field of oil and gas production increase construction, in particular to a closed pump electric sand mixing skid, which includes: a closed pump device, which is driven by a frequency conversion motor to provide power for sand mixing inside; a pipeline system, which is used for Suction and discharge of fracturing base fluid and mixed fracturing fluid, and communicated with the closed pump device; dry addition system, liquid addition system, and fiber addition system respectively connected with the closed pump device and with adjustable addition speed, respectively It is used to add dry agent, fracturing fiber and liquid agent; electric control device, which is connected with each system and closed pump device, and can control the operation of each system and closed pump device; skid frame, used to install each system , a closed pump device, and an electric control device; the purpose of the present invention is to provide a method that ensures a large displacement of the fracturing construction while ensuring a small volume of the sand mixing skid, a large amount of sand, low cost, low failure rate, and reduced Closed pump electric sand mixing skid with small well site, light weight and more convenient road transportation.

Description

technical field [0001] The invention relates to the field of oil and gas production increase construction, in particular to an electric sand mixing skid with a closed pump. Background technique [0002] Sand mixing equipment, as the core equipment of the fracturing crew, is widely used in the construction process of oil and gas production stimulation. Traditional sand mixing equipment (including sand mixing trucks, sand mixing semi-trailers, and sand mixing skids) has the following problems: [0003] 1. Regarding the overall layout of sand mixing equipment, most of the traditional sand mixing equipment is a vehicle-mounted structure or a semi-trailer structure, with large dimensions and high quality. A small part of the sand mixing equipment is skid-mounted, but due to structural layout and size limitations, the skid-mounted sand mixing equipment is all small-scale sand mixing equipment, which is difficult to meet the current large-displacement requirements of fracturing co...

AI Technical Summary

Problems solved by technology

A small part of the sand mixing equipment is skid-mounted structure, but due to the structural layout and size constraints, the sand mixing equipment of the skid-mounted structure is small sand mixing equipment, which is difficult to meet the current large-displacement requirements of fracturing construction

[0004] 2. For the form of main drive, traditional sand mixing equipment is mostly diesel engine and hydraulic drive, or electro-hydraulic hybrid drive; these two drive forms cannot completely get rid of hydraulic drive, and hydraulic drive has higher cost and failure rate than electric drive say higher

[0006] 4. As for the addition of proppant, traditional sand mixing equipment mostly provides proppant to the mixing tank (discharge pump) of sand mixing equipment through the screw conveying device (or called auger) at the tail, while the structure of the screw conveying device is more complicated, and the on-site response The failure rate is relatively high. In addition, the inclined screw conveying device increases the size and weight of the sand mixing equipment to a large extent.

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