Mixing pumping system and device thereof

Abstract

The invention provides a mixing pumping system and a device thereof. A liquid adding mechanism of the device is connected with a liquid preparing mechanism through a pipeline, the liquid preparing mechanism is connected with a pumping mechanism and an external water source through pipelines correspondingly, and a spiral conveyer in a dry adding mechanism is connected with a mixer in the liquid preparing mechanism through a pipeline. The pumping mechanism communicates with a wellhead through a pipeline, and a control system is connected with the liquid adding mechanism, the liquid preparing mechanism, the dry adding mechanism and the pumping mechanism through wires. The system works according to the following steps of 1, an operation preparation stage; 2, a mixing pumping stage; and 3, an operation finishing stage. According to the system and the device, through the integrated-control work process of a liquid adding system, a liquid preparing system, a dry adding system and a pumping system, at the mixing pumping stage, according to the actual operation requirement, the parameters such as the pumping discharging quantity, the dry adding ratio and the liquid adding ratio are adjustedin the control system to achieve functions of accurate adding of solid and liquid additives and drilling plug liquid continuous mixing pumping.

Description

technical field [0001] The invention relates to the fields of petroleum machinery and workover and well completion equipment, in particular to a mixing pumping system and its device. Background technique [0002] Shale gas reservoirs are typical low-porosity and low-permeability unconventional gas reservoirs, which account for a large proportion of the world's oil and gas resources. Its special reservoir characteristics determine that the development of such reservoirs must adopt reservoir fracturing technology to improve the seepage conditions of oil and gas flow, so as to achieve the purpose of reliable and efficient development. Since horizontal well staged fracturing technology can maximize the exposure of production layers, communicate more fracture network systems, and obtain better economic benefits, it has become the main way to reasonably solve the development problems of shale gas reservoirs. [0003] Drillable bridge plug staged perforation and sand fracturing te...

AI Technical Summary

Problems solved by technology

[0005] It can be seen from the work flow that there are the following problems in the on-site use of the compounding system for liquid mixing: the manual addition of chemicals is inaccurate, the operating conditions are harsh, the operation intensity is high, there is a certain amount of environmental pollution, and it is easy to lead to waste of manpower and material resources; liquid mixing and pumping links Single separation, water supply system, mixing system, slurry mixing system and injection system are relatively independent, unable to realize linkage and coordination adjustment, continuous mixing and instant mixing and injection functions, which virtually increases the operating intensity and operating costs, and affects the operating speed and quality

[0006] With the gradual expansion of the scale of shale gas development, the limitations and deficiencies of the drilling plug fluid circulation pumping mode that is pumped by fracturing equipment after manual fluid mixing are becoming more and more obvious, and it is becoming more and more difficult to adapt to the requirements of field operations; it is necessary to put forward A drilling fluid circulating pumping workflow that can realize precise addition of various additives, continuous mixing of drilling fluid, instant mixing and injection of drilling fluid, to meet increasingly stringent engineering requirements and help shale gas to be efficient and safe , high-quality development

[0007] According to patent and paper inquiries, there are currently no authorized or published related patents or papers at home and abroad that are similar to the technical solutions of this application, and similar patents and papers related to fracturing fluid mixing and circulating pumping at home and abroad are also available. Related content for fracturing fluid formulation or mixing equipment

Images