CN108612495A

CN108612495A - A kind of Drilling Fluid Cooling System

Info

Publication number: CN108612495A
Application number: CN201810286832.2A
Authority: CN
Inventors: 张贵磊; 侯林; 王同友; 李自立; 于海安; 阮雄; 柯真军; 顾卫中; 王勇
Original assignee: China Oilfield Services Ltd; China National Offshore Oil Corp CNOOC
Current assignee: China Oilfield Services Ltd; China National Offshore Oil Corp CNOOC
Priority date: 2018-03-30
Filing date: 2018-03-30
Publication date: 2018-10-02

Abstract

A kind of Drilling Fluid Cooling System provided by the invention, including active pool, delivery pump, inlet and outlet manifold apparatus and cooling device, inlet and outlet manifold apparatus includes drilling fluid inlet and outlet manifold apparatus, low-temperature receiver inlet and outlet manifold apparatus and rinses manifold apparatus, specifically include drilling fluid import and export pipe and low-temperature receiver import and export pipe, it is equipped with irrigation drainage tube between drilling fluid import and export pipeline and low-temperature receiver import and export pipeline and rinses return duct, each pipeline is equipped with switch valve；There are fluid passage and low-temperature receiver channel in cooling device.It imports and exports manifold apparatus and uses Modular Structure Design, realize in the same direction, reverse flow heat exchange function between drilling fluid and low-temperature receiver, and the forward and reverse pre-washing function of fluid passage, pre-washing function uses simple and convenient, box integrated sledge assembling structure is formed between cooling device and inlet and outlet manifold apparatus, has the advantages that compact-sized, movement is convenient, cleaning is simple and efficient.

Description

A kind of Drilling Fluid Cooling System

Technical field

The present invention relates to oil drilling technology field, more particularly to a kind of Drilling Fluid Cooling System.

Background technology

In Process of Oil Well Drilling, due to bottom hole temperature (BHT) height, and drill bit drilling rod and the friction of the rock borehole wall generate big calorimetric Amount, drilling fluid is constantly heated up in cyclic process, particularly with the hp-ht wells drilling process such as deep-well, ultradeep well, drilling well Temperature when liquid returns to ground can reach 200 DEG C or more, and continuous high temperature can severe exacerbation property of drilling fluid and stability, reduction brill The service life of well equipment and safety.

With the continuous development of offshore oil exploration development technique, the sea that can meet huge discharge, high cooling efficiency is developed Upper Drilling Fluid Cooling System becomes a urgent problem to be solved of ocean platform high temperature and pressure drilling engineering.Traditional drilling well liquid cooling But mode mostly uses greatly air-cooled or water-cooling pattern, marine due to lacking sufficient cooling desalination water in marine drilling The big more options air cooling way of Drilling Fluid Cooling System, but air-cooled cooling efficiency is limited, and corollary apparatus volume is larger, it is difficult to it is full Sufficient cooling system huge discharge, the work requirements for moving operation.Currently, logical in plate heat exchanger liquid stream using drilling fluid and refrigerating medium The mode that progress drilling fluid cooling is circulated in road is used widely, and passing through reduces refrigerant temperature and reduction in heat exchanger Liquid stream gap in plate heat exchanger can effectively improve the heat exchange efficiency of cooling system.

However, practical application is found, due to the liquid stream gap relative narrowness in plate heat exchanger, when by reducing refrigerant Temperature is come when improving the heat exchange cooling efficiency between drilling fluid and refrigerant, mud is easy to have received low temperature effect in circulation canal And solidification occurs and freezes, circulation canal blocking is in turn resulted in, instead so that heat exchange can not be normally carried out.Moreover, in heat exchanger channels The refrigerating mediums such as ethylene glycol are once revealed, and it will cause marine environmental pollution.Further, since drilling fluid displacement is big and contains A large amount of impurity or dregs, after cooling device continuous operation some cycles, the fluid course easily fouling of relative narrowness causes to lead to Road blocks, and then causes its cooling efficiency to reduce and even can not work normally, and carries out maintenance down to device, mutual disassembly cleans Also time and effort consuming, the technology that cannot meet continuous drilling well require assembling process again afterwards.And use ultrasound, the modes such as electromagnetic pulse into When row circulation canal cleans, the cost is relatively high for corollary equipment；When being cleaned using chemical method, then inevitably Certain pollution hidden trouble is brought to drilling fluid, marine environment, and cleaning process is also relative complex.

Invention content

For above-mentioned technical problem, a kind of inlet and outlet manifold apparatus of offer of the embodiment of the present invention is set using modular construction Meter, movement is convenient and fluid passage cleans simply and easily Drilling Fluid Cooling System.

In order to reach the purpose of the present invention, the present invention provides a kind of Drilling Fluid Cooling System, the Drilling Fluid Cooling Systems Including active pool, delivery pump, inlet and outlet manifold apparatus and cooling device, inlet and outlet manifold apparatus includes drilling fluid inlet and outlet manifold Device, low-temperature receiver inlet and outlet manifold apparatus and flushing manifold apparatus, drilling fluid inlet and outlet manifold apparatus include drilling fluid inlet pipe, bore Well liquid outlet, drilling fluid inlet pipe are located at the top of drilling fluid outlet pipe, and it includes low-temperature receiver import that low-temperature receiver, which imports and exports manifold apparatus, It manages, low-temperature receiver outlet, one in drilling fluid inlet pipe and drilling fluid outlet pipe is equipped with irrigation and drainage between low-temperature receiver inlet tube It manages, another in drilling fluid inlet pipe and drilling fluid outlet pipe is equipped with flushing return duct between low-temperature receiver outlet, and flushing is drawn Flow tube, rinse return duct on be equipped with washing control valve, in drilling fluid inlet pipe and drilling fluid outlet pipe it is described another, it is cold It is equipped with switch valve on the inlet tube of source；

The low-temperature receiver channel of fluid passage and multiple parallel connections including multiple parallel connections, the drilling well of multiple parallel connections in cooling device Alternate intervals are arranged between liquid channel and multiple low-temperature receiver channels in parallel；

Delivery pump includes drilling fluid pump and low-temperature receiver pump, and active pool, drilling fluid pump, drilling fluid inlet pipe, each drilling fluid are logical Road, drilling fluid outlet pipe, which are sequentially connected, to be connect to form closed loop flow path, low-temperature receiver pump, low-temperature receiver inlet tube, each low-temperature receiver channel, low-temperature receiver outlet Pipe, which is sequentially connected, to be connect.

In the embodiment of the present invention, inlet and outlet manifold apparatus uses Modular Structure Design, and in drilling fluid import and export pipeline It is equipped with irrigation drainage tube between low-temperature receiver import and export pipeline and rinses return duct, drilling fluid the import and export pipeline and low-temperature receiver inlet and outlet Be separately provided on pipeline control drilling fluid into and out of with low-temperature receiver into and out of switch valve, drilling fluid inlet pipe be equipped be used for The switch valve of break-make between irrigation drainage tube and drilling fluid inlet pipe is controlled, and/or for controlling irrigation drainage tube and drilling fluid The switch valve of break-make between outlet, low-temperature receiver inlet tube are equipped with for controlling between low-temperature receiver inlet tube and control low-temperature receiver outlet The switch valve of break-make.By effectively managing each pipe valve structure, to realize between drilling fluid and low-temperature receiver exchange heat refrigerating function with And the forward and reverse pre-washing function of fluid passage；And drilling fluid inlet and outlet manifold apparatus, low-temperature receiver inlet and outlet manifold apparatus and flushing Manifold apparatus concentrates on a box sledge assembling structure, and forms integrated box sledge dress entirety with cooling device so that the brill Well liquid cooling system is installed and movement process is simple and convenient, is solved each section in traditional Drilling Fluid Cooling System totality and is independently divided It dissipates, connecting pipeline arrangement is chaotic, causes the problem that structure entirety occupied space is big, movement is inconvenient.

When Drilling Fluid Cooling System works normally, the drilling fluid that stores in active pool (by pit shaft return the temperature on ground compared with High drilling fluid) drilling fluid inlet pipe is delivered to via conveyance conduit by drilling fluid pump first, simultaneously subsequently into cooling device It is assigned in each fluid passage, at the same time, low-temperature receiver is delivered to low-temperature receiver inlet tube by low-temperature receiver pump, into cooling device and divides It is fitted in each low-temperature receiver channel, drilling fluid and the low-temperature receiver reverse or co-flow in fluid passage and low-temperature receiver channel respectively utilize The temperature difference of drilling fluid and low-temperature receiver between adjacent two fluid channel carries out heat exchange, makes drilling fluid cooling down, completes heat and hands over The drilling fluid changed eventually returns to active pool after fluid passage outflow through the output of drilling fluid outlet pipe, in case next step drilling well It uses, low-temperature receiver is then back to low-temperature receiver active pool along its corresponding low-temperature receiver outlet.

When using pre-washing function, irrigation drainage tube is opened respectively, rinses the washing control valve on return duct, low-temperature receiver passes through Irrigation drainage tube or flushing return duct are drained in fluid passage, and then carry out online forward and reverse flushing to fluid passage. Using the positive and negative pre-washing function, solve drilling fluid heat exchanger channels in cooling device causes to change because fouling, clean and maintenance are inconvenient The problem of passage of heat easily blocks, cooling efficiency reduces, using easy to operate and time saving and energy saving, cleaning efficiency carries the pre-washing function Height keeps drilling fluid heat exchanger channels heat exchange property good, avoids frequently dismounting heat exchange structure component to the disassembly efficiency of cooling device It is adversely affected with sealing performance, the technology requirement of cooling system continuous work can be met；Meanwhile the pre-washing function used Cheng Zhong, without adding any other auxiliary device, compared to the side cleaned using ultrasound, electromagnetic pulse, chemical method etc. Formula, the present invention advantageously reduces the infrastructure cost and cleaning power consumption of cooling system, to improve the effective utilization of the cooling device, And then ensure the Effec-tive Function of the Drilling Fluid Cooling System.

Optionally, manifold apparatus is rinsed for positive flushing manifold apparatus, in drilling fluid inlet pipe and drilling fluid outlet pipe One is drilling fluid inlet pipe, and described another in drilling fluid inlet pipe and drilling fluid outlet pipe goes out for the drilling fluid Mouth pipe；

Alternatively, it is back flush manifold apparatus, the institute in drilling fluid inlet pipe and drilling fluid outlet pipe to rinse manifold apparatus It is drilling fluid outlet pipe to state one, and described another in drilling fluid inlet pipe and drilling fluid outlet pipe is the drilling fluid inlet Pipe.

Low-temperature receiver is inputted from low-temperature receiver import, enters drilling fluid along low-temperature receiver inlet tube, irrigation drainage tube, drilling fluid inlet pipe successively It is rinsed in channel, is exported by the low-temperature receiver being back on low-temperature receiver outlet by drilling fluid outlet pipe, flushing return duct to arrange Go out, realizes that the positive of fluid passage rinses that (forward direction rinses i.e. flow direction of the low-temperature receiver in fluid passage and drilling fluid exists Flow direction in fluid passage is identical).

When low-temperature receiver from low-temperature receiver import input, enter drilling well along low-temperature receiver inlet tube, irrigation drainage tube, drilling fluid outlet pipe successively Liquid is rinsed in channel, and the low-temperature receiver through being back on low-temperature receiver outlet by drilling fluid inlet pipe, flushing return duct goes out after flushing Mouth realizes back flush (flow direction and brill of the back flush i.e. low-temperature receiver in fluid passage of fluid passage to be discharged Flow direction of the well liquid in fluid passage is opposite).

It is easily understood that no matter using drilling fluid and low-temperature receiver reverse flow or co-flow heat exchange mode, pass through tune The whole installation position for rinsing manifold apparatus can similarly realize the forward and reverse pre-washing function of fluid passage, and circulation principle is identical, Details are not described herein.

Optionally, drilling fluid inlet pipe includes the first drilling fluid inlet pipe, the first drilling fluid connecting tube, drilling fluid outlet pipe Including the first drilling fluid outlet pipe, the second drilling fluid connecting tube, the first drilling fluid connecting tube and the second drilling fluid connecting tube are arranged side by side Be connected between the first drilling fluid inlet pipe and the first drilling fluid outlet pipe, the first drilling fluid connecting tube be equipped with drilling fluid into Mouthful, the second drilling fluid connecting tube is equipped with drilling fluid outlet；

Low-temperature receiver inlet tube includes the first low-temperature receiver inlet tube, the first low-temperature receiver connecting tube, and low-temperature receiver outlet goes out including the first low-temperature receiver Mouthful pipe, the second low-temperature receiver connecting tube, the first low-temperature receiver connecting tube and the second low-temperature receiver connecting tube be connected to side by side the first low-temperature receiver inlet tube with Between first low-temperature receiver outlet, the first low-temperature receiver connecting tube is equipped with low-temperature receiver import, and the second low-temperature receiver connecting tube is exported equipped with low-temperature receiver；

Irrigation drainage tube rinses return duct and is located at second between the first drilling fluid connecting tube and the first low-temperature receiver connecting tube Between drilling fluid connecting tube and the second low-temperature receiver connecting tube；

First drilling fluid connecting tube, the second drilling fluid connecting tube, the first low-temperature receiver connecting tube, the second low-temperature receiver connecting tube, drilling well The switch valve is equipped in liquid import.

In a kind of specific embodiment of preferred inlet and outlet manifold apparatus provided by the invention, the first drilling fluid inlet pipe, First drilling fluid outlet pipe is located at the same side and is connected respectively with the both ends of fluid passage, the first drilling fluid connecting tube and Two drilling fluid connecting tubes are arranged in parallel, and the first drilling fluid connecting tube is located at the first drilling fluid inlet pipe, the first drilling fluid outlet pipe Between and be connected respectively with the first drilling fluid inlet pipe, the first drilling fluid outlet pipe, the second drilling fluid connecting tube be located at first Between drilling fluid inlet pipe, the first drilling fluid outlet pipe and respectively with the first drilling fluid inlet pipe, the first drilling fluid outlet pipe phase Connection, the first low-temperature receiver connecting tube and the second low-temperature receiver connecting tube be arranged in parallel, the first low-temperature receiver connecting tube be located at the first low-temperature receiver inlet tube, It is connected between first low-temperature receiver outlet and respectively with the first low-temperature receiver inlet tube, the first low-temperature receiver outlet, the second low-temperature receiver connecting tube Between the first low-temperature receiver inlet tube, the first low-temperature receiver outlet and respectively with the first low-temperature receiver inlet tube, the first low-temperature receiver outlet phase Connection, the both ends of irrigation drainage tube are connected with the first drilling fluid connecting tube with the first low-temperature receiver connecting tube respectively, rinse return duct Both ends be connected respectively with the second drilling fluid connecting tube with the second low-temperature receiver connecting tube.Connected by controlling the first, second drilling fluid Take over the break-make with the first, second low-temperature receiver connecting tube upper switch valve, can be achieved at the same time reverse between drilling fluid and low-temperature receiver or The forward and reverse flushing flow path of co-flow heat exchange flow path and fluid passage gives full play of the maximum profit of each pipeline runner With rate.Meanwhile keeping the type of attachment of irrigation drainage tube, flushing return duct between two connecting lines more flexible, installation is more It is convenient.

Optionally, switch valve includes the first switch valve being located in the first drilling fluid connecting tube and second switch valve, is located at Third switch valve and the 4th switch valve in second drilling fluid connecting tube, the 5th switch valve being located in the first low-temperature receiver connecting tube and 6th switch valve, the 7th switch valve and the 8th switch valve being located in the second low-temperature receiver connecting tube, irrigation drainage tube and the first drilling well The link position and drilling fluid inlet of liquid connecting tube and the link position of the first drilling fluid connecting tube are respectively positioned on first switch valve Between second switch valve, the link position of flushing return duct and the second drilling fluid connecting tube is located at third switch valve and is opened with the 4th Between closing valve, the link position of drilling fluid outlet and the second drilling fluid connecting tube is located at the 4th switch valve and the first drilling fluid outlet Between pipe, the company of the link position and low-temperature receiver import and the first low-temperature receiver connecting tube of irrigation drainage tube and the first low-temperature receiver connecting tube Position is connect to be respectively positioned between the 5th switch valve and the 6th switch valve, the link position of flushing return duct and the second low-temperature receiver connecting tube, And the link position of low-temperature receiver outlet and the second low-temperature receiver connecting tube is respectively positioned between the 7th switch valve and the 8th switch valve.

Based on the inlet and outlet manifold apparatus structure design in the embodiment of the present invention, when two washing control valves of closing, second open Valve, third switch valve, the 5th switch valve, the 8th switch valve are closed, so that drilling fluid is entered from drilling fluid inlet, via the first drilling fluid Connecting tube, the first drilling fluid inlet pipe enter fluid passage, and are connected via the first drilling fluid outlet pipe, the second drilling fluid Pipe is finally discharged from drilling fluid outlet, and low-temperature receiver enters from low-temperature receiver import, via the first low-temperature receiver inlet tube, the first low-temperature receiver connecting tube It exports and is discharged from low-temperature receiver into low-temperature receiver channel, and via the first low-temperature receiver outlet, the second low-temperature receiver connecting tube, realize drilling fluid and cold Source reverse circulation fluid interchange is to cool down drilling fluid.Make as a result, drilling fluid in fluid passage from top to bottom, low-temperature receiver is in low-temperature receiver Fluid interchange is carried out in channel from bottom to top, is on the one hand conducive to the flow resistance for reducing drilling fluid, is drained convenient for channel vent, It avoids solid particle in drilling fluid from blocking the case where fluid passage causes drilling fluid to remain in a standstill, on the other hand ensure that low-temperature receiver Keep heat transfer effect more preferable convenient for more fully utilizing low-temperature receiver energy with enough residence times.

When closing two washing control valves, second switch valve, third switch valve, the 6th switch valve, the 7th switch valve, make drilling well Liquid enters from drilling fluid inlet, enters fluid passage via the first drilling fluid connecting tube, the first drilling fluid inlet pipe, and via First drilling fluid outlet pipe, the second drilling fluid connecting tube are finally discharged from drilling fluid outlet, and low-temperature receiver enters from low-temperature receiver import, warp Low-temperature receiver channel is entered by the first low-temperature receiver connecting tube, the first low-temperature receiver inlet tube, and is connected via the first low-temperature receiver inlet tube, the second low-temperature receiver Pipe is exported from low-temperature receiver and is discharged, and realizes drilling fluid and the heat exchange of low-temperature receiver co-flow to cool down drilling fluid.Drilling fluid is in drilling fluid as a result, In channel, low-temperature receiver be top-down flow process in low-temperature receiver channel, be conducive to reduce drilling fluid, low-temperature receiver flowing resistance Power drains convenient for two channel vents, and drilling fluid is avoided to block fluid passage.

When opening two washing control valves, closes first switch valve, the 4th switch valve, the 5th switch valve, the 7th switch valve, bores Well liquid inlet switch valve, low-temperature receiver medium enter from low-temperature receiver import, and first is drained to via the first low-temperature receiver connecting tube, irrigation drainage tube Drilling fluid connecting tube, and enter the first drilling fluid outlet pipe, fluid passage, through by the first drilling fluid inlet pipe, the after flushing Two drilling fluid connecting tubes, flushing return duct are back to the second low-temperature receiver connecting tube, are finally exported and are discharged by low-temperature receiver, to complete drilling well The back flush in liquid channel.

When opening two washing control valves, closes second switch valve, the 4th switch valve, the 5th switch valve, the 7th switch valve, bores Well liquid inlet switch valve makes low-temperature receiver enter from low-temperature receiver import, the first brill is drained to via the first low-temperature receiver connecting tube, irrigation drainage tube Well liquid connecting tube, and enter the first drilling fluid inlet pipe, fluid passage, through by the first drilling fluid outlet pipe, second after flushing Drilling fluid connecting tube, irrigation drainage tube are back to the second low-temperature receiver connecting tube, are finally exported and are discharged by low-temperature receiver, to complete drilling fluid The positive of channel is rinsed.

It, can by the way that the open and-shut mode of the relative position relation between each switch valve and pipeline and each switch valve is rationally arranged The guiding path for flexibly controlling liquid stream on each connecting line, to realize that drilling fluid and low-temperature receiver be reverse, co-flow exchanges heat respectively, and It can achieve the purpose that the forward and reverse flushing of fluid passage under the conditions of reverse, in the same direction.

Optionally, cooling device be two, drilling fluid inlet pipe both ends respectively with fluid passage in two cooling devices Entrance is connected, and drilling fluid outlet pipe both ends are connected with the outlet of fluid passage in two cooling devices respectively, low-temperature receiver import Pipe both ends are connected with the entrance in low-temperature receiver channel in two cooling devices respectively, and low-temperature receiver outlet both ends are filled with two coolings respectively The outlet for setting middle low-temperature receiver channel is connected, and box integrated sledge assembling structure is formed between two cooling devices, inlet and outlet manifold apparatus.

In the embodiment of the present invention, two cooling devices share same drilling fluid inlet and outlet manifold apparatus, inlet and outlet manifold apparatus, Wherein, the first cooling device and the first drilling fluid connecting tube and the first low-temperature receiver connecting tube are located at the same side, the second cooling device with Second drilling fluid connecting tube and the second low-temperature receiver connecting tube are located at the same side.When Drilling Fluid Cooling System works normally, drilling fluid is logical It crosses drilling fluid inlet and outlet manifold apparatus to be separately dispensed into the first cooling device and the second cooling device, low-temperature receiver is passed in and out by low-temperature receiver Mouth manifold apparatus is separately dispensed into the first cooling device and the second cooling device, can be bored simultaneously using two groups of cooling devices Well liquid circulates heat exchange with low-temperature receiver so that drilling fluid cooling treatment flux significantly improves, cooling efficiency higher.The pipe valve structure Design has given full play to the peak use rate of each pipeline runner, same to can be achieved to first by effectively controlling each pipe valve device The online of the fluid passage of cooling device and the second cooling device is rinsed forward or backwards, to improve the Drilling Fluid Cooling System Effective utilization and service life.In addition, forming case between the first cooling device, the second cooling device, inlet and outlet manifold apparatus Formula one sledge assembling structure, to make Drilling Fluid Cooling System have both, compact-sized, modularized design, cooling efficiency is high, cleaning is simple Folk prescription is just and the convenient advantage of movement.

Optionally, low-temperature receiver is seawater.

The Drilling Fluid Cooling System, as low-temperature receiver, replaces fresh water to be used as cycle using seawater using resourceful seawater Cooling water solves the problems, such as that scarcity of fresh water resources, the cooling efficiency under the conditions of offshore drilling are relatively low, and light compared to conventional The supply water of water cooling system, the seawater low-temperature receiver of the Drilling Fluid Cooling System increases, and avoids a large amount of in cooling system of fresh water Outer cooling system building and equipment (such as cooling tower, spray pond, tank, high-lift pump and industrial pump house etc.), Cooling system is caused to take up an area big and more complex, of high cost operation and maintenance problem.

Optionally, Drilling Fluid Cooling System further includes filter device, and filter device includes the first filter being arranged in parallel With the second filter, first filter and the second filter are between drilling fluid pump and drilling fluid inlet pipe.

Two filters are set, can be with a preparation and a use to meet the needs of cooling system long time continuous working, it can also Two simultaneously using to improve the filtration treatment efficiency of drilling fluid, to meet the work of the high Deal With Drilling Fluid flux of the cooling system It is required that.Wherein, it is equipped with strainer in filter, is formed with filter opening on strainer, between the aperture of filter opening is less than between fluid passage Away from causing fluid passage to block to prevent the bulky grain solid in drilling fluid from entering in fluid passage.

Optionally, the spacing of each fluid passage is equal, and the spacing in each low-temperature receiver channel is equal, and each drilling fluid is logical The spacing in road is more than the spacing in each low-temperature receiver channel.

Optionally, the spacing of each fluid passage is 8cm, and the spacing in each low-temperature receiver channel is 6cm.

Since drilling fluid is different from the density of low-temperature receiver (such as seawater), and more solid particle is often carried in drilling fluid, There are bigger differences for mobility to make drilling fluid and low-temperature receiver, and the spacing of fluid passage is set greater than low-temperature receiver channel Spacing, and the spacing of each fluid passage is preferably set to 8cm, the spacing in each low-temperature receiver channel is preferably set to 6cm, Be conducive to reduce the difference in flow of drilling fluid and low-temperature receiver between adjacent two channel, make drilling fluid with low-temperature receiver in heat exchange plate both sides Flow distribution is more balanced, and then the heat transfer of drilling fluid and low-temperature receiver between adjacent fluid passage and low-temperature receiver channel is made more to fill Point, to improve the cooling efficiency of drilling fluid.

Optionally, cooling device is plate heat exchanger, and plate heat exchanger includes multiple heat exchange plates, and each heat exchange plate is adopted Thickness with titanium plate piece, heat exchange plate is 0.6mm-1.0mm.

Heat exchange plate uses the titanium plate piece of a compression moulding, and by surface treatment, and one-time formed heat exchange plate is resistance to Compression shock, vibration and fatigue stress are had excellent performance, and have extremely strong resistant to sea water and mud corrosive power, to extend heat exchange The service life of plate can meet Drilling Fluid Cooling System long term reliability requirement.

According to plate heat exchanger water pressure test test result, the thickness of heat exchange plate is preferably 0.6mm-1.0mm, works as heat exchange When the thickness of plate is less than 0.6mm, then heat exchange plate is relatively thin, keeps the mechanical strength of heat exchange plate insufficient, it is difficult to ensure heat exchanger plates Compression resistance shock and vibration after piece compression and fatigue stress performance；When the thickness of heat exchange plate is more than 1.0mm, then heat exchanger plates Piece is thicker, keeps the thermal conduction resistance of heat exchange plate larger, is unfavorable for improving the heat transfer efficiency between drilling fluid and low-temperature receiver, increase simultaneously Heat exchange plate cost.

Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification It obtains it is clear that understand through the implementation of the invention.The purpose of the present invention and other advantages can be by specification, rights Specifically noted structure is realized and is obtained in claim and attached drawing.

Description of the drawings

Attached drawing is used for providing further understanding technical solution of the present invention, and a part for constitution instruction, with this One embodiment of application rises for explaining technical scheme of the present invention, does not constitute the limitation to technical solution of the present invention.

Fig. 1 is the overall structure diagram according to the Drilling Fluid Cooling System of one embodiment of the invention；

Fig. 2 is the structural schematic diagram of the inlet and outlet manifold apparatus in Fig. 1；

Fig. 3 is drilling fluid top-down flow path in drilling fluid imports and exports manifold apparatus when normally heat exchange is cooling in Fig. 1 Schematic diagram；

Fig. 4 is flow path signal of the low-temperature receiver in low-temperature receiver imports and exports manifold apparatus from bottom to top when normally heat exchange is cooling in Fig. 1 Figure；

Fig. 5 is flow path schematic diagram when carrying out reverse cleaning in Fig. 1；

Fig. 6 is the side structure schematic view of plate heat exchanger in Fig. 1.

Wherein, the relationship in Fig. 1-Fig. 6 between reference numeral and component names is：

1 inlet and outlet manifold apparatus, 11 first drilling fluid inlet pipes, 12 first drilling fluid outlet pipes, 13 first low-temperature receiver imports Pipe, 14 first low-temperature receiver outlets, 15 irrigation drainage tubes, 16 rinse return duct, 17,18 washing control valves, and 19 first drilling fluids connect It takes over, 20 second drilling fluid connecting tubes, 21 first low-temperature receiver connecting tubes, 22 second low-temperature receiver connecting tubes, 23 drilling fluid inlets, 24 drilling wells Liquid exports, 25 low-temperature receiver imports, and the outlet of 26 low-temperature receivers, 27 first switch valves, 28 second switch valves, 29 third switch valves, 30 the 4th open Close valve, 2 first cooling devices, 201 fluid passages, 202 low-temperature receiver channels, 203 front plates, 204 rear plates, 205 fishbolts Pair, 206 top guide bars, 207 lower guide rods, 3 second cooling devices, 41 first filters, 42 second filters.

Specific implementation mode

To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention Embodiment be described in detail.It should be noted that in the present embodiment, drilling fluid inlet pipe, drilling fluid outlet pipe, low-temperature receiver into Mouthful pipe, low-temperature receiver outlet position relationship only represent drilling fluid or low-temperature receiver into and out of direction, do not limit drilling fluid inlet specifically The specific location relationship of pipe, drilling fluid outlet pipe, low-temperature receiver inlet tube, low-temperature receiver outlet, therefore each conduit positions relationship can be different, Meet installation and requirement.Think that it is to lead not install the runner that switch valve is closed on each pipeline in the present embodiment Logical state.In the absence of conflict, the features in the embodiments and the embodiments of the present application mutually can be combined arbitrarily.

Present disclosure will be discussed in detail by specific embodiment below.

Fig. 1 is the overall structure diagram according to the Drilling Fluid Cooling System of one embodiment of the invention；Fig. 2 is in Fig. 1 Inlet and outlet manifold apparatus structural schematic diagram；Fig. 3 is that drilling fluid imports and exports manifold in drilling fluid when normally heat exchange is cooling in Fig. 1 Top-down flow path schematic diagram in device；Fig. 4 is low-temperature receiver when normally heat exchange is cooling in Fig. 1 in low-temperature receiver imports and exports manifold apparatus Flow path schematic diagram from bottom to top；Fig. 5 is flow path schematic diagram when carrying out reverse cleaning in Fig. 1；Fig. 6 is plate-type heat-exchange in Fig. 1 The side structure schematic view of device.

It can be seen that from Fig. 1 and Fig. 2, Drilling Fluid Cooling System provided in this embodiment includes active pool, delivery pump, disengaging Mouth manifold apparatus 1 and cooling device, inlet and outlet manifold apparatus 1 include drilling fluid inlet and outlet manifold apparatus 1, low-temperature receiver inlet and outlet manifold Device 1 and flushing manifold apparatus, it includes drilling fluid inlet pipe, drilling fluid outlet pipe, drilling fluid that drilling fluid, which imports and exports manifold apparatus 1, Inlet tube is located at the top of drilling fluid outlet pipe, and it includes low-temperature receiver inlet tube, low-temperature receiver outlet that low-temperature receiver, which imports and exports manifold apparatus 1, is bored One in well liquid inlet tube and drilling fluid outlet pipe is equipped with irrigation drainage tube 15, drilling fluid inlet pipe between low-temperature receiver inlet tube And another in drilling fluid outlet pipe is equipped between low-temperature receiver outlet and rinses return duct 16, irrigation drainage tube 15 rinses back Washing control valve 17,18 is equipped in flow tube 16, in drilling fluid inlet pipe and drilling fluid outlet pipe it is described another, low-temperature receiver into It is equipped with switch valve on mouth pipe；

The low-temperature receiver channel 202 of fluid passage 201, multiple parallel connections in cooling device including multiple parallel connections and sealing knot Structure, alternate intervals are arranged between the fluid passage 201 of multiple parallel connections and multiple low-temperature receiver channels 202 in parallel, and are tied by sealing Structure seals against each other, and prevents from mutually altering between drilling fluid and low-temperature receiver；The both ends of each fluid passage 201 respectively with drilling fluid inlet Pipe, drilling fluid outlet pipe are connected, and the both ends in each low-temperature receiver channel 202 are connected with low-temperature receiver inlet tube, low-temperature receiver outlet respectively；

Delivery pump includes drilling fluid pump and low-temperature receiver pump, and active pool, drilling fluid pump, drilling fluid inlet pipe, each drilling fluid are logical Road 201, drilling fluid outlet pipe, which are sequentially connected, to be connect to form closed loop flow path, low-temperature receiver pump, low-temperature receiver inlet tube, each low-temperature receiver channel 202, cold Source outlet, which is sequentially connected, to be connect.

In the present embodiment, inlet and outlet manifold apparatus 1 use Modular Structure Design, and drilling fluid the import and export pipeline with it is cold It is equipped with irrigation drainage tube 15 between the import and export pipeline of source and rinses return duct 16, drilling fluid the import and export pipeline and low-temperature receiver inlet/outlet pipe Road be separately provided for control drilling fluid into and out of with low-temperature receiver into and out of switch valve, drilling fluid inlet pipe be equipped with for controlling A switch valve of break-make between irrigation drainage tube 15 and drilling fluid inlet pipe processed, and/or for controlling irrigation drainage tube 15 and boring A switch valve of break-make between well liquid outlet, low-temperature receiver inlet tube are equipped with for controlling low-temperature receiver inlet tube and the outlet of control low-temperature receiver A switch valve of break-make between pipe.By effectively managing each pipe valve structure, the cooling work(that exchanges heat between drilling fluid and low-temperature receiver is realized The forward and reverse pre-washing function of energy and fluid passage.And drilling fluid inlet and outlet manifold apparatus 1, low-temperature receiver import and export manifold apparatus 1 It is concentrated on a box sledge assembling structure with manifold apparatus is rinsed, and integrated box sledge dress entirety is formed with cooling device, So that Drilling Fluid Cooling System installation and movement process are simple and convenient, solves each portion in traditional Drilling Fluid Cooling System totality Divide independent dispersion, connecting pipeline arrangement is chaotic, causes the problem that structure entirety occupied space is big, cooling system transports inconvenience.

As shown in Figure 3 to Figure 4, when Drilling Fluid Cooling System works normally, the drilling fluid stored in active pool is logical first It crosses drilling fluid pump and is delivered to drilling fluid inlet pipe via conveyance conduit, subsequently into cooling device and be assigned to fluid passage In 201, at the same time, low-temperature receiver is delivered to low-temperature receiver inlet tube by low-temperature receiver pump, into cooling device and is assigned to low-temperature receiver channel 202 In, drilling fluid and the low-temperature receiver reverse or co-flow in fluid passage 201 and low-temperature receiver channel 202 respectively, using drilling fluid and Temperature difference of the low-temperature receiver between adjacent two fluid channel carries out heat exchange, makes drilling fluid cooling down, completes the drilling well of heat exchange Liquid eventually returns to active pool after the outflow of fluid passage 201 through the output of drilling fluid outlet manifold stream, in case next step drilling well It uses, low-temperature receiver is then back to low-temperature receiver active pool along its corresponding low-temperature receiver outlet.

As shown in figure 5, when using pre-washing function, irrigation drainage tube 15 is opened respectively, rinses the flushing on return duct 16 Control valve 17,18, low-temperature receiver are drained to by irrigation drainage tube 15 or flushing return duct 16 in fluid passage 201, and then to boring Well liquid channel 201 carries out forward and reverse on-line rinsing.Using the positive and negative pre-washing function, solves drilling fluid in cooling device and exchange heat Channel causes heat exchanger channels easily to block, the problem of cooling efficiency reduces, pre-washing function use because fouling, clean and maintenance are inconvenient Easy to operate and time saving and energy saving, cleaning efficiency improves, and keeps drilling fluid heat exchanger channels heat exchange property good, avoids frequently dismounting heat exchange Construction package adversely affects the disassembly efficiency and sealing performance of cooling device, can meet the skill of cooling system continuous work Art requirement；Meanwhile during the pre-washing function use, without adding any other auxiliary device, compared to using ultrasound, electromagnetism The mode that pulse, chemical method etc. are cleaned, the present invention advantageously reduce the infrastructure cost and cleaning power consumption of cooling system, from And the effective utilization of the cooling device is improved, and then ensure the Effec-tive Function of the Drilling Fluid Cooling System.

Further, manifold apparatus is rinsed for positive flushing manifold apparatus, in drilling fluid inlet pipe and drilling fluid outlet pipe It is one be drilling fluid inlet pipe, described another in drilling fluid inlet pipe and drilling fluid outlet pipe is the drilling fluid Outlet；

When being rinsed using forward direction, as shown in figure 5, being equipped with irrigation drainage tube between drilling fluid inlet pipe and low-temperature receiver inlet tube 15, when being equipped with flushing return duct 16 between drilling fluid outlet pipe and low-temperature receiver outlet, so that low-temperature receiver is inputted from low-temperature receiver import 25, successively Enter in fluid passage 201 along low-temperature receiver inlet tube, irrigation drainage tube 15, drilling fluid inlet pipe and be rinsed, by by drilling well Liquid outlet, flushing return duct 16 are back to the outlet of the low-temperature receiver on low-temperature receiver outlet 26 with discharge, realize fluid passage 201 (forward direction flushing i.e. flow direction of the low-temperature receiver in fluid passage 201 is with drilling fluid in fluid passage 201 for forward direction flushing Flow direction is identical).

Alternatively, when using back flush, low-temperature receiver is set to be inputted from low-temperature receiver import 25, successively along low-temperature receiver inlet tube, irrigation and drainage Pipe 15, drilling fluid outlet pipe, which enter in fluid passage 201, to be rinsed, through being flowed back by drilling fluid inlet pipe, flushing after flushing Pipe 16 is back to the outlet of the low-temperature receiver on low-temperature receiver outlet 26 with discharge, realizes the back flush (back flush of fluid passage 201 That is flow direction of the low-temperature receiver in fluid passage 201 is opposite with flow direction of the drilling fluid in fluid passage 201).

It is easily understood that no matter using drilling fluid and low-temperature receiver reverse flow or co-flow heat exchange mode, pass through tune The whole installation position for rinsing manifold apparatus, can similarly realize the forward and reverse pre-washing function of fluid passage 201, circulation principle with Above-mentioned identical, details are not described herein.

Further, drilling fluid inlet pipe includes the first drilling fluid inlet pipe 11, the first drilling fluid connecting tube 19, drilling fluid Outlet includes the first drilling fluid outlet pipe 12, the second drilling fluid connecting tube 20, the first drilling fluid connecting tube 19 and the second drilling well Liquid connecting tube 20 is connected between the first drilling fluid inlet pipe 11 and the first drilling fluid outlet pipe 12 side by side, the connection of the first drilling fluid Pipe 19 is equipped with drilling fluid inlet 23, and the second drilling fluid connecting tube 20 is equipped with drilling fluid outlet 24；

Low-temperature receiver inlet tube includes the first low-temperature receiver inlet tube 13, the first low-temperature receiver connecting tube 21, and low-temperature receiver outlet includes first cold Source outlet 14, the second low-temperature receiver connecting tube 22, the first low-temperature receiver connecting tube 21 and the second low-temperature receiver connecting tube 22 are connected to first side by side Between low-temperature receiver inlet tube 13 and the first low-temperature receiver outlet 14, the first low-temperature receiver connecting tube 21 is equipped with low-temperature receiver import 25, the second low-temperature receiver Connecting tube 22 is equipped with low-temperature receiver and exports 26；

Irrigation drainage tube 15 rinses return duct 16 between the first drilling fluid connecting tube 19 and the first low-temperature receiver connecting tube 21 Between the second drilling fluid connecting tube 20 and the second low-temperature receiver connecting tube 22；

First drilling fluid connecting tube 19, the second drilling fluid connecting tube 20, the first low-temperature receiver connecting tube 21, the second low-temperature receiver connecting tube 22, it is equipped with the switch valve on drilling fluid inlet 23.

In the present embodiment, as shown in Fig. 2, the first drilling fluid inlet pipe 11 is located at the top of the first drilling fluid outlet pipe 12, First low-temperature receiver inlet tube 13 is located at the lower section of the first low-temperature receiver outlet 14, the first drilling fluid inlet pipe 11, the first drilling fluid outlet Pipe 12 is laterally arranged in parallel and is located at the same side, and the first low-temperature receiver inlet tube 13, the first low-temperature receiver outlet 14 are laterally arranged in parallel simultaneously Positioned at the same side.First drilling fluid connecting tube 19 and the second drilling fluid connecting tube 20 are arranged in parallel, the first drilling fluid connecting tube 19 Between the first drilling fluid inlet pipe 11, the first drilling fluid outlet pipe 12 and respectively with the first drilling fluid inlet pipe 11, first Drilling fluid outlet pipe 12 is connected, and the second drilling fluid connecting tube 20 is located at the first drilling fluid inlet pipe 11, the first drilling fluid outlet It is connected between pipe 12 and respectively with the first drilling fluid inlet pipe 11, the first drilling fluid outlet pipe 12, the first low-temperature receiver connecting tube 21 It is arranged in parallel with the second low-temperature receiver connecting tube 22, the first low-temperature receiver connecting tube 21 is located at the first low-temperature receiver inlet tube 13, the outlet of the first low-temperature receiver It is connected between pipe 14 and respectively with the first low-temperature receiver inlet tube 13, the first low-temperature receiver outlet 14, the second low-temperature receiver connecting tube 22 is located at Between first low-temperature receiver inlet tube 13, the first low-temperature receiver outlet 14 and respectively with the first low-temperature receiver inlet tube 13, the first low-temperature receiver outlet 14 are connected.The both ends of irrigation drainage tube 15 are connected with the first drilling fluid connecting tube 19 with the first low-temperature receiver connecting tube 21 respectively, The both ends for rinsing return duct 16 are connected with the second drilling fluid connecting tube 20 with the second low-temperature receiver connecting tube 22 respectively, by controlling the One, the break-make of the second drilling fluid connecting tube 20 and the switch valve in the first, second low-temperature receiver connecting tube 22, can be achieved at the same time drilling well The forward and reverse flushing flow path of reverse or co-flow heat exchange flow path and fluid passage between liquid and low-temperature receiver, gives full play to Go out the peak use rate of each pipeline runner.Meanwhile making irrigation drainage tube 15, rinsing company of the return duct 16 between two connecting lines It is more flexible to connect form, it is easier for installation.

As can be seen from Figure 5, irrigation drainage tube 15, flushing return duct 16 are set as U-shaped, the both ends point of irrigation drainage tube 15 It is not connected with the first drilling fluid connecting tube 19 with the lateral wall of the first low-temperature receiver connecting tube 21, rinses the both ends difference of return duct 16 It is connected with the second drilling fluid connecting tube 20 with the lateral wall of the second low-temperature receiver connecting tube 22.It is easily understood that irrigation drainage tube 15, it rinses return duct 16 and may be alternatively provided as the arbitrary forms such as straight tube, curved pipe, alternatively, irrigation drainage tube 15, flushing return duct 16 It can also be directly disposed as irrigation and drainage mouth and rinse refluxing opening, scouring media, Jin Ercong are introduced directly by irrigation and drainage mouth Rinse the flushing process that fluid passage 201 is realized in refluxing opening discharge.Each the import and export pipeline, each connecting line, each flushing line Between use flanged joint, control valve and switch valve are separately positioned on each flange connections.

Further, switch valve includes the first switch valve 27 being located in the first drilling fluid connecting tube 19 and second switch valve 28, the third switch valve 29 and the 4th switch valve 30 that are located in the second drilling fluid connecting tube 20 are located at the first low-temperature receiver connecting tube 21 On the 5th switch valve and the 6th switch valve, the 7th switch valve and the 8th switch valve that are located in the second low-temperature receiver connecting tube 22, punching Wash the link position and drilling fluid inlet 23 and the first drilling fluid connecting tube 19 of drainage tube 15 and the first drilling fluid connecting tube 19 Link position be respectively positioned on first switch valve 27 and second switch valve 28 between the two, rinse return duct 16 and the second drilling fluid company Between third switch valve 29 and the 4th switch valve 30, drilling fluid outlet 24 and the second drilling fluid connect the link position of take over 20 The link position of take over 20 is between the 4th switch valve 30 and the first drilling fluid outlet pipe 12, irrigation drainage tube 15 and first cold The link position of the link position of source connecting tube 21 and low-temperature receiver import 25 and the first low-temperature receiver connecting tube 21 is respectively positioned on the 5th switch Between the two, the link position and low-temperature receiver for rinsing return duct 16 and the second low-temperature receiver connecting tube 22 export for valve and the 6th switch valve 26 and second the link position of low-temperature receiver connecting tube 22 be respectively positioned on the 7th switch valve and the 8th switch valve between the two.

As shown in Fig. 2, in the present embodiment, first switch valve 27 is located at irrigation drainage tube 15 and the first drilling fluid inlet pipe 11 Between；Second switch valve 28 is located between drilling fluid inlet 23 and the first drilling fluid outlet pipe 12；Third switch valve 29 is located at punching It washes between return duct 16 and the first drilling fluid inlet pipe 11；4th switch valve 30 be located at drilling fluid outlet 24 and the first drilling fluid into Between mouth pipe 11；5th switch valve is located between irrigation drainage tube 15 and the first low-temperature receiver outlet 14；6th switch valve is located at cold Between source import 25 and the first low-temperature receiver outlet 14；7th switch valve, which is located at, rinses return duct 16 and the first drilling fluid outlet pipe 12 Between；8th switch valve is located between low-temperature receiver outlet 26 and the first low-temperature receiver outlet 14.

It, can by the way that the open and-shut mode of the relative position relation between each switch valve and pipeline and each switch valve is rationally arranged The guiding path for flexibly controlling liquid stream on each connecting line, to realize that drilling fluid and low-temperature receiver be reverse, co-flow exchanges heat respectively, and The job requirement of the forward and reverse flushing of fluid passage 201 can be reached under the conditions of reverse, in the same direction.Specifically, in conjunction with this Above-mentioned four kinds of situations are described in detail in inlet and outlet manifold apparatus 1 in embodiment.

As shown in Figure 3 and Figure 4, when drilling fluid and low-temperature receiver reverse circulation fluid interchange work, two washing control valves 17 are closed, 18, second switch valve 28, third switch valve 29, the 5th switch valve, the 8th switch valve, make drilling fluid from drilling fluid inlet 23 into Enter, enters fluid passage 201 via the first drilling fluid inlet pipe 11, the first drilling fluid connecting tube 19, and via the first drilling well Liquid outlet 12, the second drilling fluid connecting tube 20 are finally discharged from drilling fluid outlet 24, and low-temperature receiver enters from low-temperature receiver import 25, warp Low-temperature receiver channel 202 is entered by the first low-temperature receiver inlet tube 13, the first low-temperature receiver connecting tube 21, and via the first low-temperature receiver outlet 14, the Two low-temperature receiver connecting tubes 22 realize drilling fluid and the fluid interchange of low-temperature receiver reverse circulation to cool down drilling fluid from 26 discharge of low-temperature receiver outlet. Make as a result, drilling fluid in fluid passage 201 from top to bottom, low-temperature receiver in low-temperature receiver channel 202 from bottom to top carry out flowing change On the one hand heat is conducive to the flow resistance for reducing drilling fluid, is drained convenient for channel vent, solid particle in drilling fluid is avoided to block On the other hand the case where fluid passage 201 causes drilling fluid to remain in a standstill ensure that low-temperature receiver has enough residence times, just In more fully utilizing low-temperature receiver energy, keep heat transfer effect more preferable.

As another optional embodiment, drilling fluid and low-temperature receiver reverse cycle flow heat exchange work when, close two punching Control valve 17,18, second switch valve 28, third switch valve 29, the 6th switch valve, the 7th switch valve are washed, makes drilling fluid from drilling well Liquid import 23 enters, and enters fluid passage 201 via the first drilling fluid inlet pipe 11, the first drilling fluid connecting tube 19, and passes through It by the first drilling fluid outlet pipe 12, the second drilling fluid connecting tube 20, is finally discharged from drilling fluid outlet 24, low-temperature receiver is from low-temperature receiver import 25 enter, and enter low-temperature receiver channel 202 via the first low-temperature receiver outlet 14, the first low-temperature receiver connecting tube 21, and via the first low-temperature receiver into Mouth pipe 13, the second low-temperature receiver connecting tube 22 realize that drilling fluid and the heat exchange of low-temperature receiver co-flow are bored with cooling from 26 discharge of low-temperature receiver outlet Well liquid.As a result, drilling fluid in fluid passage 201, low-temperature receiver be top-down flow process in low-temperature receiver channel 202, The flow resistance for being conducive to reduce drilling fluid, low-temperature receiver, drains convenient for two channel vents, and drilling fluid is avoided to block fluid passage 201。

When back flush, as shown in figure 5, opening two washing control valves 17,18, closes first switch valve the 27, the 4th and switch Valve 30, the 5th switch valve, the 7th switch valve, drilling fluid inlet switch valve, low-temperature receiver medium enters from low-temperature receiver import 25, via first Low-temperature receiver connecting tube 21, irrigation drainage tube 15 are drained to the first drilling fluid connecting tube 19, and enter the first drilling fluid outlet pipe 12, bore Well liquid channel 201, through being flowed back by the first drilling fluid inlet pipe 11, the second drilling fluid connecting tube 20, flushing return duct 16 after flushing To the second low-temperature receiver connecting tube 22, finally by 26 discharge of low-temperature receiver outlet, to complete the back flush of fluid passage 201.

As another optional embodiment, when positive flushing, when opening two washing control valves 17,18, second is closed Switch valve 28, the 4th switch valve 30, the 5th switch valve, the 7th switch valve, drilling fluid inlet switch valve, make low-temperature receiver from low-temperature receiver import 25 enter, and are drained to the first drilling fluid connecting tube 19 via the first low-temperature receiver connecting tube 21, irrigation drainage tube 15, and enter first and bore Well liquid inlet tube 11, fluid passage 201, through by the first drilling fluid outlet pipe 12, the second drilling fluid connecting tube 20, punching after flushing It washes drainage tube 15 and is back to the second low-temperature receiver connecting tube 22, finally by 26 discharge of low-temperature receiver outlet, to complete fluid passage 201 Forward direction is rinsed.

It is easily understood that drilling fluid and low-temperature receiver are in the same direction or when reverse flow exchanges heat, each control valve and each switch valve are each Installation position on pipeline also accordingly has a variety of design positions, the position relationship and import and export manifold apparatus of switch valve specific Position mode it is directly related, therefore the location schemes of switch valve are not limited in a kind of this embodiment, include at least drilling well Liquid and low-temperature receiver co-flow carry out carrying out back flush when positive flushing, drilling fluid and low-temperature receiver co-flow exchange heat, boring when exchanging heat Well liquid and low-temperature receiver co-flow carry out carrying out back flush four when positive flushing, drilling fluid and low-temperature receiver reverse flow exchange heat when exchanging heat Kind structural design scheme, further includes other modes of texturing that those skilled in the art are readily apparent that, other related variation feelings certainly Details are not described herein for condition.

Further, cooling device is two, including is symmetricly set on the first cooling of the both sides of inlet and outlet manifold apparatus 1 Device 2 and the second cooling device 3, the both ends of drilling fluid inlet pipe respectively with the fluid passage 201 of the first cooling device 2, The fluid passage 201 of two cooling devices 3 is connected, the both ends drilling well with the first cooling device 2 respectively of drilling fluid outlet pipe Liquid channel 201, the second cooling device 3 fluid passage 201 be connected, the both ends of low-temperature receiver inlet tube 13 respectively with the first cooling The low-temperature receiver channel 202 of device 2, the second cooling device 3 low-temperature receiver channel 202 be connected, the both ends of low-temperature receiver outlet 14 respectively with The low-temperature receiver channel 202 of first cooling device 2, the second cooling device 3 low-temperature receiver channel 202 be connected, the first cooling device 2, Box integrated sledge assembling structure is formed between two cooling devices 3, inlet and outlet manifold apparatus 1.

In the present embodiment, the first cooling device 2 and the second cooling device 3 can share same drilling fluid inlet and outlet manifold apparatus 1, manifold apparatus 1 is imported and exported, the first cooling device 2 is located at same with the first drilling fluid connecting tube 19 and the first low-temperature receiver connecting tube 21 Side, the second cooling device 3 and the second drilling fluid connecting tube 20 and the second low-temperature receiver connecting tube 22 are located at the same side.Such as Fig. 1 and Fig. 2 institutes Show, the both ends of the first drilling fluid inlet pipe 11 respectively with the fluid passage 201 of the first cooling device 2 and the second cooling device 3 The position that is connected, and is connected of fluid passage 201 be respectively equipped with the 9th switch valve and the tenth switch valve, the first drilling fluid The both ends of outlet 12 fluid passage with the fluid passage 201 of the first cooling device 2 and the second cooling device 3 respectively 201 are connected, and the position being connected is respectively equipped with the 11st switch valve and the 12nd switch valve；First low-temperature receiver inlet tube 13 Both ends are connected with the low-temperature receiver channel 202 in the low-temperature receiver channel 202 of the first cooling device 2 and the second cooling device 3 respectively, and are connected The position connect is respectively equipped with the 13rd switch valve and the 14th switch valve, and the both ends of the first low-temperature receiver outlet 14 are cold with first respectively But the low-temperature receiver channel 202 of device 2 is connected with the low-temperature receiver channel 202 of the second cooling device 3, and the position being connected is respectively equipped with 15th switch valve and sixteenmo close valve.It is easily understood that drilling fluid inlet 23, drilling fluid outlet 24, low-temperature receiver import 25, Low-temperature receiver outlet 26 on can also be respectively equipped with corresponding switch valve, with facilitate control drilling fluid and low-temperature receiver into and out of on off operating mode.

When Drilling Fluid Cooling System works normally, two washing control valves 17,18 are closed, specifically, further Close the ten, the 12nd, the 14th, sixteenmo is when closing valve, first cooling device 2 that can be used alone carries out drilling fluid cooling； When closing the nine, the 11st, the 13rd, 15 switch valve, second cooling device 3 that can be used alone carries out drilling well liquid cooling But, when the 9th to sixteenmo, which closes valve, opens, it can be used simultaneously the first, second cooling device 3 and carry out drilling fluid cooling, this When, drilling fluid is imported and exported manifold apparatus 1 by drilling fluid and is separately dispensed into the first cooling device 2 and the second cooling device 3, cold Manifold apparatus 1 is imported and exported by low-temperature receiver and is separately dispensed into the first cooling device 2 and the second cooling device 3 in source.

Specifically, it is illustrated by taking reverse flow heat exchange in the present embodiment as an example, as shown in Figure 3 and Figure 4, drilling fluid is from brill Well liquid import 23 enters, and the first cooling device 2 is respectively enterd via the first drilling fluid connecting tube 19, the first drilling fluid inlet pipe 11 In the fluid passage 201 of the second cooling device 3, and it is pooled to the first drilling fluid outlet pipe 12, the second drilling fluid connecting tube 20, it is finally discharged from drilling fluid outlet 24, low-temperature receiver enters from low-temperature receiver import 25, via the first low-temperature receiver connecting tube 21, the first low-temperature receiver Inlet tube 13 respectively enters the entrance low-temperature receiver channel 202 of the first cooling device 2 and the second cooling device 3, and it is cold to be pooled to first Source outlet 14, the second low-temperature receiver connecting tube 22 realize drilling fluid and low-temperature receiver reverse circulation fluid interchange from 26 discharge of low-temperature receiver outlet To cool down drilling fluid.

Drilling fluid is carried out using two groups of cooling devices simultaneously and circulate heat exchange with low-temperature receiver so that drilling fluid cooling treatment is logical Amount significantly improves, cooling efficiency higher.The pipe valve structure designs the peak use rate for having given full play to each pipeline runner, by having Effect controls each pipe valve device, same to can be achieved to exist to the fluid passage 201 of the first cooling device 2 and the second cooling device 3 Line rinses forward or backwards, to improve the effective utilization and service life of the Drilling Fluid Cooling System.In addition, the first cooling device 2, box integrated sledge assembling structure is formed between the second cooling device 3, inlet and outlet manifold apparatus 1, to make Drilling Fluid Cooling System Have both the advantage that compact-sized, modularized design, cooling efficiency is high, cleaning is simple and convenient and convenient movement.

Further, each cooling device is a plate heat exchanger, and each plate heat exchanger includes multiple heat exchange plates, more A stacked heat exchange plate forms multiple fluid passages 201 of alternate intervals arrangement and multiple low-temperature receiver channels 202, each heat exchange Plate includes four angle skies, and four angle space divisions do not export phase with drilling fluid inlet 23, drilling fluid outlet 24, low-temperature receiver import and low-temperature receiver It is corresponding.Each heat exchange plate further includes the first plate face and the second plate face being away from each other with the first plate face, the first plate face and the second plate The convex-concave groove shape in face complements each other to form netted convex-concave structure runner plate face, opposite between adjacent two first plate faces and by close Sealed knot is configured to the fluid passage 201 of sealing, is sealed with respect to and by sealing structure formation between adjacent two second plate faces Low-temperature receiver channel 202.Sealing structure is arranged about the bending that seal grove area extends (around corner apertures, the lateral edges of flow passage area) Edge, the first plate face, the second plate face are equipped with seal groove, and the both sides of sealing structure are respectively between adjacent two first plate faces, phase It is supported each other between adjacent two second plate faces, and by the side edge seal of fluid passage 201 and low-temperature receiver channel 202, with shape At multiple fluid passages 201 in parallel and sealing and multiple low-temperature receiver channels 202 in parallel and sealing, each drilling fluid is logical Road 201 and each low-temperature receiver channel 202 alternate and are intervally arranged.Drilling fluid and low-temperature receiver flow through corresponding corner apertures and enter fluid passage 201 and when low-temperature receiver channel 202, form strong turbulence when so that fluid media (medium) is flowed in damascene trench by netted corrugated channel, one Aspect realizes the high efficient heat exchanging of plate heat exchanger, on the other hand delays the speed that fouling generates on plate by turbulence state Degree, meets the requirement of the heat exchanger longer cycle of operation.

Roof shape sealing structure can be used in sealing structure, and the thickness sealed is more than the thickness in the gap, roof shape Sealing structure can ensure heat exchange plate, and when clamping stress, stress is maximum among sealing structure, under smaller clamping force effect It realizes larger sealing force, while easy disassembly, being unlikely to deform, enable 202 pressure-bearing of fluid passage 201 and low-temperature receiver channel Power enhances, sealing reliability higher, and elastic rubber material, such as viton seal ring can be selected in sealing structure, ensures sealing knot Structure service life is long.

All sealing structures and each heat exchange plate are all made of integrated compression moulding, make adjacent two plate face and sealing structure Between be fixedly clamped after can accurately press positioning, reach the bearing capacity and sealing effect of technological requirement, avoid drilling fluid and cold Pollution between causing mutually is altered in source in heat transfer process, improves environmental protection, the reliability of Drilling Fluid Cooling System.

As shown in fig. 6, each plate heat exchanger further includes fixed frame, each multiple heat exchange plates pass through fixed heat exchanger plates Piece installation is fixed, and fixed frame includes front plate 203, rear plate 204, fishbolt pair 205, top guide bar 206 and lower guide rod 207, each multiple heat exchange plates, which are located between front plate 203 and rear plate 204 and are fixed by fishbolt, constitutes a plate Formula heat exchanger assembly.

It is easily understood that according to actual condition needs, the number of heat exchange plate in cooling device can be rationally increased and decreased Amount, and then heat exchange area is adjusted, to meet the efficient cooling of drilling fluid cooling, the job requirement of high disposal flux.

Further, the spacing of each fluid passage 201 is equal, and the spacing in each low-temperature receiver channel 202 is equal and each The spacing of fluid passage 201 is more than the spacing in each low-temperature receiver channel 202.

Since drilling fluid is different from the density of low-temperature receiver (such as seawater), and more solid particle is often carried in drilling fluid, To make the mobility of drilling fluid and low-temperature receiver there are bigger difference, in the present embodiment, as shown in fig. 6, between fluid passage 201 Away from the spacing for being set greater than low-temperature receiver channel 202, be conducive to reduce the stream of drilling fluid and low-temperature receiver between adjacent two channel in this way Amount is poor, keeps drilling fluid more balanced in the flow distribution of heat exchange plate both sides with low-temperature receiver, and then make drilling fluid with low-temperature receiver adjacent Heat transfer between fluid passage 201 and low-temperature receiver channel 202 is more abundant, to improve the cooling efficiency of drilling fluid.

In the present embodiment, it is preferable that set the spacing of each fluid passage 201 to 8cm, the spacing in low-temperature receiver channel is set It is set to 6cm, ensures that drilling fluid and seawater have high circulation in respective channel in heat exchanger, while it is abundant to exchange heat.

Further, each heat exchange plate uses titanium plate piece, and the thickness of heat exchange plate is 0.6mm-1.0mm.

According to plate heat exchanger water pressure test test result, the thickness of heat exchange plate is preferably 0.6mm-1.0mm, works as heat exchange When the thickness of plate is less than 0.6mm, then heat exchange plate is relatively thin, keeps the mechanical strength of heat exchange plate insufficient, it is difficult to ensure heat exchanger plates Compression resistance shock and vibration after piece compression and fatigue stress performance；When the thickness of heat exchange plate is more than 1.0mm, then heat exchanger plates Piece is thicker, keeps the thermal conduction resistance of heat exchange plate larger, is unfavorable for improving the heat transfer efficiency between drilling fluid and low-temperature receiver, increase simultaneously The infrastructure cost of heat exchange plate.

Further, low-temperature receiver is seawater.

The Drilling Fluid Cooling System, as low-temperature receiver, replaces fresh water to be used as cycle using seawater using resourceful seawater Cooling water solves the problems, such as that scarcity of fresh water resources, the cooling efficiency under the conditions of offshore drilling are relatively low, and light compared to conventional The supply water of water cooling system, the seawater low-temperature receiver of the Drilling Fluid Cooling System increases, and avoids a large amount of in cooling system of fresh water Outer cooling system building and equipment, cause cooling system to take up an area big and more complex, of high cost operation and maintenance problem.

Further, Drilling Fluid Cooling System further includes filter device, and filter device includes the first filtering being arranged in parallel Device 41 and the second filter 42, first filter 41 and the second filter 42 are between drilling fluid pump and drilling fluid inlet pipe.

As shown in Figure 1, first filter 41 is equipped with the first inlet valve and first outlet valve, the second filter 42 is equipped with Second inlet valve and second outlet valve.Two filters are set, it can be with a preparation and a use to meet marine long time continuous working Demand, can also two simultaneously using to improve the filtration treatment efficiency of drilling fluid, to meet at the high drilling fluid of the cooling system Manage the job requirement of flux.Wherein, it is equipped with strainer in filter, is formed with filter opening on strainer, the aperture of filter opening is changed less than fluid Spacing between the passage of heat causes fluid passage to prevent the bulky grain solid in drilling fluid from entering in fluid passage 201 201 block.

In the description of the embodiment of the present invention, it is to be understood that term "upper", "lower", "left", "right", " preceding ", The instructions such as " rear ", "inner", "outside", " both sides ", " plate face ", " adjacent ", " close ", " lateral edges ", " surface ", " alternate intervals " Orientation or positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of the description present invention and simplification is retouched It states, not indicating or implying the indicated structure has specific orientation, with specific azimuth configuration and operation, therefore cannot manage Solution is limitation of the present invention.

In the description of the embodiment of the present invention, it should be noted that unless otherwise clearly defined and limited, term is " even Connect ", " being fixedly connected ", " installation ", " assembly " shall be understood in a broad sense, can also be detachably to connect for example, it may be being fixedly connected It connects, or is integrally connected；Term " installation ", " connection ", " being fixedly connected " can be directly connected, and can also pass through intermediary It is indirectly connected, can be the connection inside two elements.For the ordinary skill in the art, it can be managed with concrete condition Solve the concrete meaning of above-mentioned term in the present invention.

Although disclosed herein embodiment it is as above, the content only for ease of understanding the present invention and use Embodiment is not limited to the present invention.It should be appreciated that in design principle and operation principle without departing from present design Under the conditions of, specific location relationship and type of attachment of the inlet and outlet manifold apparatus of Drilling Fluid Cooling System provided in this embodiment etc. There can also be other deformations according to actual needs.Technical staff in any fields of the present invention is not departing from institute of the present invention Under the premise of the spirit and scope of exposure, any modification and variation, but this hair can be carried out in the form and details of implementation Bright scope of patent protection, the appended claims that must still be subject to are defined.

Claims

1. a kind of Drilling Fluid Cooling System, including active pool, delivery pump, inlet and outlet manifold apparatus and cooling device, feature exist In,

Inlet and outlet manifold apparatus includes drilling fluid inlet and outlet manifold apparatus, low-temperature receiver inlet and outlet manifold apparatus and rinses manifold apparatus, It includes drilling fluid inlet pipe, drilling fluid outlet pipe that drilling fluid, which imports and exports manifold apparatus, and drilling fluid inlet pipe is located at drilling fluid outlet The top of pipe, low-temperature receiver inlet and outlet manifold apparatus includes low-temperature receiver inlet tube, low-temperature receiver outlet, drilling fluid inlet pipe and drilling fluid outlet One in pipe is equipped with irrigation drainage tube between low-temperature receiver inlet tube, another in drilling fluid inlet pipe and drilling fluid outlet pipe It is equipped between low-temperature receiver outlet and rinses return duct, washing control valve, drilling fluid are equipped on irrigation drainage tube, flushing return duct In inlet tube and drilling fluid outlet pipe it is described another, be equipped with switch valve on low-temperature receiver inlet tube；

The drilling fluid in the low-temperature receiver channel of fluid passage and multiple parallel connections including multiple parallel connections in cooling device, multiple parallel connections is logical Alternate intervals are arranged between road and multiple low-temperature receiver channels in parallel；

Delivery pump includes drilling fluid pump and low-temperature receiver pump, active pool, drilling fluid pump, drilling fluid inlet pipe, each fluid passage, brill Well liquid outlet, which is sequentially connected, to be connect to form closed loop flow path, low-temperature receiver pump, low-temperature receiver inlet tube, each low-temperature receiver channel, low-temperature receiver outlet according to It is secondary to be connected.

2. Drilling Fluid Cooling System according to claim 1, which is characterized in that it is positive flushing manifold to rinse manifold apparatus Device, one in drilling fluid inlet pipe and drilling fluid outlet pipe are drilling fluid inlet pipe, drilling fluid inlet pipe and drilling well Described another in liquid outlet is the drilling fluid outlet pipe；

Alternatively, flushing manifold apparatus is back flush manifold apparatus, described one in drilling fluid inlet pipe and drilling fluid outlet pipe A is drilling fluid outlet pipe, and described another in drilling fluid inlet pipe and drilling fluid outlet pipe is the drilling fluid inlet pipe.

3. Drilling Fluid Cooling System according to claim 1, which is characterized in that drilling fluid inlet pipe includes the first drilling fluid Inlet tube, the first drilling fluid connecting tube, drilling fluid outlet pipe include the first drilling fluid outlet pipe, the second drilling fluid connecting tube, the One drilling fluid connecting tube and the second drilling fluid connecting tube are connected to side by side between drilling fluid inlet pipe and drilling fluid outlet pipe, and first Drilling fluid connecting tube is equipped with drilling fluid inlet, and the second drilling fluid connecting tube is equipped with drilling fluid outlet；

Low-temperature receiver inlet tube include the first low-temperature receiver inlet tube, the first low-temperature receiver connecting tube, low-temperature receiver outlet include the first low-temperature receiver outlet, Second low-temperature receiver connecting tube, the first low-temperature receiver connecting tube and the second low-temperature receiver connecting tube are connected to low-temperature receiver inlet tube and low-temperature receiver outlet side by side Between, the first low-temperature receiver connecting tube is equipped with low-temperature receiver import, and the second low-temperature receiver connecting tube is exported equipped with low-temperature receiver；

Irrigation drainage tube rinses return duct and is located at the second drilling well between the first drilling fluid connecting tube and the first low-temperature receiver connecting tube Between liquid connecting tube and the second low-temperature receiver connecting tube；

First drilling fluid connecting tube, the second drilling fluid connecting tube, the first low-temperature receiver connecting tube, the second low-temperature receiver connecting tube, drilling fluid into It is equipped with the switch valve on mouthful.

4. Drilling Fluid Cooling System according to claim 3, which is characterized in that switch valve includes being located at the first drilling fluid company The first switch valve and second switch valve taken over, the third switch valve and the 4th switch that are located in the second drilling fluid connecting tube Valve, the 5th switch valve being located in the first low-temperature receiver connecting tube and the 6th switch valve, the 7th be located in the second low-temperature receiver connecting tube open Close valve and the 8th switch valve, the link position and drilling fluid inlet and first of irrigation drainage tube and the first drilling fluid connecting tube The link position of drilling fluid connecting tube is respectively positioned between first switch valve and second switch valve, rinses return duct and the second drilling fluid The link position of connecting tube between third switch valve and the 4th switch valve, drilling fluid outlet and the second drilling fluid connecting tube Link position is between the 4th switch valve and the first drilling fluid outlet pipe, the connection of irrigation drainage tube and the first low-temperature receiver connecting tube The link position of position and low-temperature receiver import and the first low-temperature receiver connecting tube is respectively positioned between the 5th switch valve and the 6th switch valve, It rinses return duct and link position and the low-temperature receiver outlet of the second low-temperature receiver connecting tube is equal with the link position of the second low-temperature receiver connecting tube Between the 7th switch valve and the 8th switch valve.

5. according to the Drilling Fluid Cooling System described in any one of claim 1-4, which is characterized in that cooling device is two, Drilling fluid inlet pipe both ends are connected with the entrance of fluid passage in two cooling devices respectively, drilling fluid outlet pipe both ends difference It is connected with the outlet of fluid passage in two cooling devices, low-temperature receiver inlet tube both ends are logical with low-temperature receiver in two cooling devices respectively The entrance in road is connected, and low-temperature receiver outlet both ends are connected with the outlet in low-temperature receiver channel in two cooling devices respectively, two coolings Box integrated sledge assembling structure is formed between device, inlet and outlet manifold apparatus.

6. according to the Drilling Fluid Cooling System described in any one of claim 1-4, which is characterized in that further include filter device, Filter device includes the first filter being arranged in parallel and the second filter, and first filter and the second filter are located at drilling fluid Between pump and drilling fluid inlet pipe.

7. according to the Drilling Fluid Cooling System described in any one of claim 1-4, which is characterized in that low-temperature receiver is seawater.

8. according to the Drilling Fluid Cooling System described in any one of claim 1-4, which is characterized in that

The spacing of each fluid passage is equal, and the spacing in each low-temperature receiver channel is equal, and the spacing of each fluid passage is big Spacing in each low-temperature receiver channel.

9. Drilling Fluid Cooling System according to claim 8, which is characterized in that the spacing of each fluid passage is 8cm, The spacing in each low-temperature receiver channel is 6cm.

10. according to the Drilling Fluid Cooling System described in any one of claim 1-4, which is characterized in that cooling device is board-like Heat exchanger, plate heat exchanger include multiple heat exchange plates, and each heat exchange plate is using titanium plate piece, the thickness of heat exchange plate 0.6mm-1.0mm。