阅读说明：本技术 钻井泥浆降温装置 (Drilling mud cooling device ) 是由 郑家远 张振华 刘湘华 丁海斌 徐曙光 于 2019-12-17 设计创作，主要内容包括：一种钻井泥浆降温装置,压缩机、换热箱安装在机架箱的箱底上,泥浆换热器安装在换热箱里,泥浆换热器的进口、出口处于换热箱外,换热箱里有导热介质,工质出管安装在换热箱里,工质出管的一端穿出换热箱与压缩机的排出端连接相通,机架箱内的中间设置支架板,蒸发器放置在支架板上,工质出管的另一端穿出换热箱与蒸发器的入口端连接相通,工质回管的一端与蒸发器的出口端连接相通,工质回管的另一端与压缩机的吸入端连接相通,风机安装在机架箱上,风机处于蒸发器的上方,压缩机、风机运转时,高温泥浆经过泥浆换热器后,泥浆的热量经导热介质传递给工质出管,加热工质出管内的工质,工质将热量带至蒸发器后散发出后,再被风机将热量排至大气中。(A drilling mud cooling device comprises a compressor, a heat exchange box, a mud heat exchanger, a heat transfer medium, a working medium outlet pipe, a bracket plate, an evaporator, a fan, a heat exchanger, a mud heat exchanger, a working medium outlet pipe, a heat transfer medium inlet pipe, a working medium outlet pipe, a heat transfer medium outlet pipe, and heating the working medium in the working medium outlet pipe, and after the working medium brings the heat to the evaporator and gives out the heat, exhausting the heat to the atmosphere by the fan.)

1. The utility model provides a drilling mud heat sink, includes fan (1), evaporimeter (2), frame case (3), working medium return pipe (4), compressor (5), mounting panel (6), working medium exit tube (7), heat transfer case (8), mud heat exchanger (9), characterized by: the compressor (5) and the heat exchange box (8) are arranged on the bottom of the frame box (3), the slurry heat exchanger (9) is arranged in the heat exchange box (8), the inlet and the outlet of the slurry heat exchanger (9) are positioned outside the heat exchange box (8), a heat-conducting medium is arranged in the heat exchange box (8), the working medium outlet pipe (7) is arranged in the heat exchange box (8), one end of the working medium outlet pipe (7) penetrates through the heat exchange box (8) and is communicated with the discharge end of the compressor (5), the middle part in the frame box (3) is provided with a support plate (6), the evaporator (2) is arranged on the support plate (6), the other end of the working medium outlet pipe (7) penetrates through the heat exchange box (8) and is communicated with the inlet end of the evaporator (2), one end of the working medium return pipe (4) is communicated with the outlet end of the evaporator (2), the other end of the working medium return pipe (4) is communicated with the suction, the fan (1) is arranged on the frame box (3), the fan (1) is positioned above the evaporator (2), and the working medium outlet pipe 7 is filled with working medium.

Technical Field

The invention relates to ground auxiliary equipment for oilfield drilling, in particular to a drilling mud cooling device.

Background

At present, in operations such as oil drilling, mud is needed to be used for carrying rock nitrate drilled by a drill bit to the ground and lubricating the drill bit, and more importantly, the temperature of the drill bit and underground equipment is reduced, so that the drill bit and the underground equipment can work normally. Because the drilling depth is kilometer, the temperature of the stratum reaches 60-150 ︒ C, and the temperature of the mud after the mud returns from the stratum reaches about 80 ︒ C, in order to protect the environment and reduce the material cost, the mud with the temperature reaching about 80 ︒ C that returns from the stratum is reused, if the mud with the temperature reaching about 80 ︒ C is pumped into the well for drilling, the high-temperature mud can affect the drill bit and the downhole equipment, so that the performance of the drill bit and the downhole equipment is reduced or eliminated, the drilling direction of the drill bit is changed, the drilling well can not meet the design requirements, and great economic loss is generated. In order to reduce the temperature of the slurry, a slurry pond is dug at the well site, and the slurry returned from the well is naturally cooled in the slurry pond. The cooling method needs to occupy the site of the well site, needs to enlarge the area of the well site and increases the land use cost on one hand; on the other hand, the mud is easy to be polluted when falling to the ground, the use performance of the mud is damaged, and the drilling quality and progress are influenced when the mud is repeatedly used; on the other hand, the environment can be polluted, the slurry system is in open jar circulation, harmful substances in the slurry can permeate underground to pollute the ground surface, and various harmful gases in the slurry are emitted into the atmosphere to cause serious pollution to the environment.

Disclosure of Invention

The invention aims to design a drilling mud cooling device, so that high-temperature mud returned from a well can be cooled to the temperature meeting the requirements of a drill bit and a downhole tool through the drilling mud cooling device, the existing problems can be overcome, and the drilling quality is ensured.

The purpose of the invention is realized as follows: comprises a fan, an evaporator, a frame box, a working medium return pipe, a compressor and a support plate, the working medium outlet pipe, the heat exchange box and the slurry heat exchanger are arranged on the bottom of the frame box, the compressor and the heat exchange box are arranged in the heat exchange box, the slurry heat exchanger is arranged in the heat exchange box, an inlet and an outlet of the slurry heat exchanger are positioned outside the heat exchange box, a heat-conducting medium is arranged in the heat exchange box, the working medium outlet pipe is arranged in the heat exchange box, one end of the working medium outlet pipe penetrates through the heat exchange box and is communicated with an exhaust end of the compressor, a support plate is arranged in the middle of the frame box, the evaporator is placed on the support plate, the other end of the working medium outlet pipe penetrates through the heat exchange box and is communicated with an inlet end of the evaporator, one end of the working medium return pipe is communicated with an outlet end of the evaporator, the other end of the working medium return pipe is communicated with.

The invention has the beneficial effects that: when the compressor and the fan are operated, high-temperature mud is pumped into the mud heat exchanger by a mud pump, heat of the mud is transferred to the working medium outlet pipe through the heat-conducting medium to heat the working medium in the working medium outlet pipe, the working medium brings the heat to the evaporator and then emits the heat, and the heat is discharged to the atmosphere by the fan, so that the high-temperature mud is cooled, and the requirement of recycling the mud is met.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention.

Detailed Description

An embodiment of the present invention will be described below with reference to fig. 1.

As shown in figure 1, the embodiment of the invention comprises a fan 1, an evaporator 2, a frame box 4, a working medium return pipe 5, a compressor 6, a support plate 6, a working medium outlet pipe 7, a heat exchange box 8 and a slurry heat exchanger 9, wherein the compressor 6 and the heat exchange box 8 are arranged on the bottom of the frame box 4, the slurry heat exchanger 9 is arranged in the heat exchange box 8, an inlet and an outlet of the slurry heat exchanger 9 are positioned outside the heat exchange box 8, a heat-conducting medium is arranged in the heat exchange box 8, the working medium outlet pipe 7 is arranged in the heat exchange box 8, one end of the working medium outlet pipe 7 penetrates through the heat exchange box 8 and is communicated with the discharge end of the compressor 6, the support plate 6 is arranged in the middle of the frame box 4, the evaporator 2 is arranged on the support plate 6, the other end of the working medium outlet pipe 7 penetrates through the heat exchange box 8 and is communicated with the inlet end of the evaporator 2, one end of the working medium return pipe 5 is communicated with the outlet, the fan 1 is arranged on the frame box 4, the fan 1 is positioned above the evaporator 2, and the working medium outlet pipe 7 is filled with working medium, which is also called refrigerant.

The evaporator 2 can be a plurality of evaporator groups which are connected in series, and each evaporator 2 corresponds to one fan 1.

When the compressor 5 and the fan 1 are in operation, after high-temperature slurry passes through the slurry heat exchanger 9, heat of the slurry is transferred to the working medium outlet pipe 7 through a heat conducting medium in the heat exchange box 8, the working medium in the working medium outlet pipe 7 is heated, the working medium brings the heat to the evaporator 2 and then emits the heat, and then the fan 1 discharges the heat to the atmosphere, so that the high-temperature slurry is cooled. The invention can reduce the temperature of the high-temperature mud of 80 ︒ C to 30 ︒ C. The mud returned from the well can be reused.