CN105422025B - A kind of device and method for evaluating flushing liquor - Google Patents
A kind of device and method for evaluating flushing liquor Download PDFInfo
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- CN105422025B CN105422025B CN201410479914.0A CN201410479914A CN105422025B CN 105422025 B CN105422025 B CN 105422025B CN 201410479914 A CN201410479914 A CN 201410479914A CN 105422025 B CN105422025 B CN 105422025B
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Abstract
The present invention provides device and method of the kind for evaluating flushing liquor.Device includes drilling well liquid case, rinse liquid case, first fluid channel, cricoid second fluid channel and evaluation unit, wherein, first fluid channel is selectively connected to drilling well liquid case and flushing liquid case, cricoid second fluid channel includes by detection cylinder in first and being socketed in the first annular space portion that detection cylinder is formed outside detected outside cylinder in first first, wherein, the one end in second fluid channel is connected with first fluid channel, the other end is selectively connected to drilling well liquid case and flushing liquid case, evaluation unit is used for according to the first annular space portion before drilling fluid flows through, quality afterwards and the quality after flushing liquor flows through evaluate the performance of flushing liquor.Pass through above-mentioned setting, under the conditions of subsurface environment capable of being simulated realistically, the flush efficiency of flushing liquor.To be conducive to carry out developing technique evaluation, cementing quality is improved.
Description
Technical field
The invention belongs to oil-gas field development technical fields, and in particular to a kind of device and method for evaluating flushing liquor.
Background technique
Shale gas exploitation at present is all made of oil-base mud brill and opens payzone, and the oil film effect water that oil-base mud is formed in the borehole wall
The bonding quality of mudstone and stratum, simultaneously because oil-base mud is sticky, and drilling fluid is poor, and replacement efficiency is low, reduces well cementation
Quality influences annular space integral sealing effect.
High-efficiency rinsing liquid technology is current one of the key technology for improving shale gas cementing quality, using reasonable flushing liquor
System and effective developing technique, can effectively improve cementing quality.But at present during cementing operation, flushing liquor is influenced in a state of excitement
The factor for washing effect is more, such as: wellbore quality, hole deviation, borehole size, mud property, operational discharge capacity, flushing liquor physicochemical property,
The factors such as prepad fluid structure.Flushing liquor system and developing technique Lab-evaluation means shortage or relatively easy at present, fail true
Just effectively carry out flushing liquor appraisal, flushing liquor technology rests in certain subjective understanding and theoretical research.For example, room
The interior main six fast viscosimeter rotation modes that pass through carry out flushing liquors evaluation.Although this method is simple, well cannot be effectively simulated
Cylinder, evaluation method lack validity.Field application and evaluation are mainly carried out by test well at the scene, but due to live shadow
The factor of sound is more, and evaluation result is easy to cause to be distorted.
Summary of the invention
For the above problem in the presence of the prior art, the present invention is intended to provide a kind of for evaluating the dress of flushing liquor
It sets.The present apparatus can reasonably carry out the evaluation of flushing liquor flush efficiency under the conditions of real simulation subsurface environment.The present invention also mentions
For a kind of method for evaluating flushing liquor.
According to an aspect of the present invention, it provides a kind of for evaluating the device of flushing liquor comprising:
Drilling well liquid case,
Liquid case is rinsed,
First fluid channel is selectively connected to drilling well liquid case and flushing liquid case,
Cricoid second fluid channel, including being examined by detection cylinder in first and being socketed in outside detected in first outside cylinder first
Survey the first annular space portion that cylinder is formed, wherein the one end in second fluid channel is connected with first fluid channel, the other end and drilling well
Liquid case is connected to liquid case selectivity is rinsed,
Evaluation unit, for flowing through forward and backward quality in drilling fluid according to the first annular space portion and after flushing liquor flows through
Quality evaluate the performance of flushing liquor.
Pass through above-mentioned setting, under the conditions of subsurface environment capable of being simulated realistically, the flush efficiency of flushing liquor.To be conducive to
Carry out developing technique evaluation, improves cementing quality.And this apparatus structure is simple, it is easy to accomplish.
Preferably, the first inner wall for detecting cylinder outside is manufactured by artificial sandstone.Different interfaces are simulated by this set
Flushing liquor evaluates efficiency, is conducive to the borehole wall in the practical cementing operation of more preferable simulation.
In one embodiment, it is respectively set at the both ends in the first annular space portion and is contained in second annular space in second fluid channel
Portion and third annular space portion, the second annular space portion are formed by the second inner cylinder and the second outer cylinder being socketed in outside the second inner cylinder, third annular space
Portion is formed by third inner cylinder and the third outer cylinder that is socketed in outside third inner cylinder, wherein the both ends of detection cylinder are respectively with the in first
Two inner cylinders and third inner cylinder detachable connection, the both ends of detection cylinder are detachable with the second outer cylinder and third outer cylinder respectively outside first
Formula connection.By above-mentioned setting, the first annular space portion has been arranged in the centre in the second annular space portion and third annular space portion, while first
Detection cylinder can be by disassembling on second fluid channel outside interior detection cylinder and first.So as to replace unlike material first outside
Cylinder is detected, the borehole wall for simulating different geological conditions is conducive to.Simultaneously, it can be achieved that detection cylinder outside first is removed weighing, simplify
Operation.
Preferably, first fluid channel includes round tube, and arrival end and drilling well liquid case and the flushing liquid case of round tube selectively connect
Logical, outlet end is connected to second fluid channel.It has the advantages of simple structure and easy realization second fluid channel and drilling well liquid case and flushing
Liquid case is selectively connected to.
It is further preferred that round tube is arranged in by detecting cylinder in first, the interior space that the second inner cylinder and third inner cylinder are formed
In.By this set, so that whole device is compact-sized, space occupied is saved.
In one embodiment, the branch of round tube, third inner cylinder and third outer cylinder is used to support in the arrival end setting of round tube
Seat is supportted, ingate and outlet opening are provided on support base, ingate is for making round tube and drilling well liquid case and rinsing liquid case selectivity
Connection, outlet opening is for being connected to third annular space portion with drilling well liquid case with liquid case selectivity is rinsed.By this set, so that whole
A apparatus structure compact and reasonable.
In one embodiment, in the outlet end of round tube, setting is used to support the stifled of round tube, the second inner cylinder and the second outer cylinder
Head.Its is compact-sized, it is easy to accomplish.
In one embodiment, the intercommunicating pore for being connected to the second annular space portion is set on the side wall of the outlet end of round tube.
By this set, be conducive to the annular flow of drilling fluid or flushing liquor, more preferable simulation practical working situation.
In one embodiment, the outer wall for being socketed in round tube is set between the axial direction for detecting cylinder in the second inner cylinder and first
On the first inner tube support tube, the outer wall at the both ends of the first inner tube support tube be socketed in respectively the second inner cylinder and first in detect cylinder
Inner wall on, in third inner cylinder and first detect cylinder axial direction between be arranged be socketed in round tube outer wall on the second inner tube branch
Cylinder is supportted, the outer wall at the both ends of the second inner tube support tube is socketed in first respectively on the inner wall of detection cylinder and third inner cylinder.Pass through
Above-mentioned setting facilitates connect at the both ends that cylinder is detected in first with the second inner cylinder and third inner cylinder respectively, and can be easily
It realizes and removes detection cylinder in first from the first inner tube support tube and the second inner tube support tube.
In one embodiment, first outer tube support tube is set between the axial direction for detecting cylinder outside the second outer cylinder and first,
The both ends of first outer tube support tube are socketed in respectively outside the second outer cylinder and first on the outer wall of detection cylinder, in third outer cylinder and first
The second outer tube support tube is set between the axial direction of outer detection cylinder, the both ends of the second outer tube support tube be socketed in respectively third outer cylinder and
Outside first on the outer wall of detection cylinder.By above-mentioned setting realize the both ends of detection cylinder outside first respectively with the second outer cylinder and third
The connection of outer cylinder.And it can be easily carried out detection cylinder outside first from the first outer tube support tube and the second outer tube support tube
It removes.
In one embodiment, the workbench for further including bracket and connecting and capable of being rotated relative to bracket with bracket, will prop up
Support seat and plug setting on the table.It is able to achieve rotation of the workbench relative to level ground by this set, so as to
The developing technique of dummy level well, straight well and inclined shaft is evaluated.
In one embodiment, the control element for controlling fluid flow rate and pressure is set on first fluid channel.
Namely setting is flowed for controlling on the feeding pipeline that mud pit and flushing liquid case are selectively connected with second fluid channel
The control element of body flow velocity and pressure.Flushing liquor, which can be reconciled, by this set passes through first fluid channel and second fluid channel
Speed and pressure, can effectively carry out turbulent flow and stratification replace evaluation.
In one embodiment, photologging element is set in the end in third annular space portion.Pass through this set, Neng Gouji
Fluid flow state is recorded, observation blending interface provides analysis means for the research of developing technique.Different flowings can be carried out simultaneously
Replacement efficiency analysis under state, can carry out flow field analysis.
According to another aspect of the present invention, a kind of method that flushing liquor is evaluated in use according to above-mentioned device is provided, is wrapped
Include following steps:
Step 1: cylinder is detected outside weighing first, obtains the first mass value；
Step 2: it connect drilling well liquid case with first fluid channel, makes circulation of drilling fluid；
Step 3: cylinder is detected outside weighing first, obtains the second mass value；
Step 4: it connect the flushing liquid case with the first fluid channel, recycles flushing liquor；
Step 5: cylinder is detected outside weighing first, obtains third mass value；
Step 6: the effect of flushing liquor is evaluated based on the first mass value, the second mass value and third mass value.
Before step 6, it is repeated in step 4 and step 5.By the above method, it can easily carry out flushing liquor
Evaluation efficiency is rinsed, the evaluation of flushing liquor developing technique can be also carried out.
Compared with the prior art, the advantages of the present invention are as follows, can flushing liquor flow regime in real simulation pit shaft, can
Carry out the evaluation of flushing liquor flush efficiency, can also carry out developing technique evaluation, the replacement efficiency under different flow regimes can be carried out
Analysis, can carry out flow field analysis.
Detailed description of the invention
The preferred embodiment of the present invention is described in detail below in conjunction with attached drawing.In figure:
Fig. 1 shows according to the present invention for evaluating the device of flushing liquor.
The attached drawing is not drawn according to the actual ratio.
Specific embodiment
Preferred embodiment in accordance with the present invention will hereinafter be introduced.
Fig. 1 is shown in more detail according to the present invention for evaluating the device 100 of flushing liquor.As shown in Figure 1, evaluation is rinsed
The device 100 of liquid includes drilling well liquid case 1, rinses liquid case 2, first fluid channel 3, second fluid channel 4 and evaluation unit (in figure
It is not shown).Wherein, first fluid channel 3 is connected to drilling well liquid case 1 and 2 selectivity of flushing liquid case.The one of second fluid channel 4
End is connected with first fluid channel 3, and the other end is connected to drilling well liquid case 1 and 2 selectivity of flushing liquid case.Second fluid channel 4
Including by detection cylinder 6 in first and being socketed in the first annular space portion 41 that detection cylinder 7 is formed outside detected outside cylinder 6 in first first.
Evaluation unit is used to flow through the first forward and backward quality in annular space portion 41 in drilling fluid according to detection cylinder 7 outside first and in flushing liquor
Quality after flowing through evaluates the performance of flushing liquor.
First fluid channel 3 is first connected to drilling well liquid case 1 as a result, makes drilling fluid followed by first fluid channel 3 and the
Two fluid channels 4, and flow back to drilling fluid case 1.So that drilling fluid recycles a timing with certain discharge capacity in the first annular space portion 41
Between.Then, first fluid channel 3 is connected to flushing liquid case 2 again, is followed in the first annular space portion 41 with flushing liquor with certain discharge capacity
Ring certain time.Then evaluation unit is recycled to flow through forward and backward quality in drilling fluid according to detection cylinder 7 outside first and rushing
Quality after washing lotion flows through evaluates the performance of flushing liquor.By above-mentioned setting, energy real simulation subsurface environment can be opened rationally
Open up the flush efficiency evaluation of flushing liquor.
As shown in Figure 1, the second annular space portion for being contained in second fluid channel 4 is respectively set at the both ends in the first annular space portion 41
42 and third annular space portion 43.Wherein, 9 shape of the second outer cylinder that the second annular space portion 42 inner cylinder 8 and be socketed in outside the second inner cylinder 8 by second
At.Third annular space portion 43 is formed by third inner cylinder 10 and the third outer cylinder 11 being socketed in outside third inner cylinder 10.
First fluid channel 3 includes round tube 12.And in order to enable whole device 100 is compact-sized, space occupied is saved,
This round tube 12 may be provided at by detecting cylinder 6 in first, in the interior space 13 that the second inner cylinder 8 and third inner cylinder 10 are formed.It can manage
The outside in interior space 13 can also be arranged in Xie Di, round tube 12, as long as one end connects with drilling well liquid case 1 and 2 selectivity of flushing liquid case
It is common to and introduces drilling fluid or flushing liquor, and the other end is connected to second fluid channel 4.
The on the outer wall for being socketed in round tube 12 is arranged between the axial direction for detecting cylinder 6 in the second inner cylinder 8 and first
One inner tube support tube 16.The outer wall at the both ends of the first inner tube support tube 16 is socketed in the second inner cylinder 8 and first respectively and detects cylinder 6
Inner wall on.The second inner tube branch on the outer wall for being arranged between cylinder 6 and being socketed in round tube 12 is being detected in third inner cylinder 10 and first
Cylinder 17 is supportted, the outer wall at the both ends of the second inner tube support tube 17 is socketed in the inner wall of detection cylinder 6 and third inner cylinder 10 in first respectively
On.First outer tube support tube 18, the both ends of the first outer tube support tube 18 are set between cylinder 7 detecting outside the second outer cylinder 8 and first
It is socketed on the outer wall for detecting cylinder 7 outside with first respectively.Second outer tube is set between cylinder 7 detecting outside third outer cylinder 11 and first
Support tube 19, the both ends of the second outer tube support tube 19 are socketed in outside third outer cylinder 11 and first respectively on the outer wall of detection cylinder 7.The
One outer tube support tube 18 is socketed in outside the first inner tube support tube 16, and the two constitutes and the first annular space portion 41 and the second annular space portion 42
The 4th annular space portion 44 being connected to.Second outer tube support tube 19 is socketed in outside the second inner tube support tube 17, and the two constitutes and the
The 5th annular space portion 45 that one annular space portion 41 is connected to third annular space portion 43.
For example, first in detection cylinder 6 both ends respectively with 17 screw thread of the first inner tube support tube 16 and the second inner tube support tube
Connection.It is easily disassembled for realizing by detection cylinder 6 in first.Similarly, outside first the both ends of detection cylinder 7 respectively with first
Outer tube support tube 18 and the second outer tube support tube 19 are threadedly coupled.It is easily disassembled for realizing by detection cylinder 7 outside first.
The centre in the second annular space portion 42 and third annular space portion 43 has been arranged in first annular space portion 41, while cylinder 6 and first is detected in first
Outer detection cylinder 7 can be by disassembling on second fluid channel 4.First so as to replace unlike material detects cylinder 7 outside, favorably
In the borehole wall of simulation different geological conditions.Simultaneously, it can be achieved that removing and weighing detection cylinder 7 in first, operation is simplified.
The inner wall of detection cylinder 7 is manufactured by artificial sandstone outside first, for simulating the pit shaft situation of different geological conditions.
Detected between the second inner cylinder 8 and the first inner tube support tube 16, in first cylinder 6 and the first inner tube support tube 16 it
Between, between third inner cylinder 10 and the second inner tube support tube 17, in first between detection cylinder 6 and the second inner tube support tube 17, first
It is detected between cylinder 7 between outer tube support tube 18 and the second outer cylinder 8, outside the first outer tube support tube 18 first, the second outer tube support tube
Sealing element 20 is respectively provided between 19 and third outer cylinder 11 and outside the second outer tube support tube 19 and first between detection cylinder 7.For
Guarantee the sealing of device 100.
In one embodiment, (namely connect with drilling well liquid case 1 and 2 selectivity of flushing liquid case in the arrival end of round tube 12
Logical one end) support base 14 for being used to support round tube 12, third inner cylinder 10 and third outer cylinder 11 is set.Support base 14 substantially
Centre is provided with axial ingate 141, and is connected to round tube 12.The outlet opening of radial outside is set on support base 14
142 with third annular space portion 43 for being connected to.So that round tube 12 is by ingate 141 and drilling well liquid case 1 and rinses the choosing of liquid case 2
The connection of selecting property, and drilling well liquid case 1 is flowed back to by the drilling fluid or flushing liquor in third annular space portion 43 respectively and rinses liquid case 2.To
Drilling fluid or flushing liquor circulation are formd, and is conducive to the recycling of drilling fluid and flushing liquor.Meanwhile this set, so that
Whole device 100 is compact-sized rationally.
In a specific embodiment, support base 14 may include support base ontology 143, from support base ontology 143 to round tube
The first support base stage portion 144 that 12 ends extend, and extend from the first support base stage portion 144 to 12 end of round tube second
Support seat stage portion 145.The arrival end of round tube 12 is embeddable to ingate 141 and in communication.For example, can be connected through a screw thread by
Round tube 12 is tightened on the inner wall for being formed in ingate 141.Third inner cylinder 10 can be socketed in the second support base stage portion 145
On outer wall, and it is attached thereto by screw thread.Third outer cylinder 11 can be socketed on the outer wall of the first support base stage portion 144, and be led to
Screw thread is crossed to be attached thereto.
Similarly, the outlet end of round tube 12 (it is namely non-with drilling well liquid case 1 and rinse liquid case 2 be selectively connected to it is another
One end) plug 15 for being used to support round tube 12, the second inner cylinder 8 and the second outer cylinder 9 is set.Plug 15 may include plug ontology 151,
The the first plug stage portion 152 extended from plug ontology 151 to 12 end of round tube, and from the first plug stage portion 152 to round tube
The second plug stage portion 153 that 12 ends extend.And the mounting hole 154 axial in the setting of the centre of the second plug stage portion 153,
For accommodating the outlet end of round tube 12.For example, can be connected through a screw thread on the inner wall that round tube 12 is tightened in mounting hole 154.
Second inner cylinder 8 can be socketed on the outer wall of the second plug stage portion 153, and be attached thereto by screw thread.Second outer cylinder 9 can be socketed
On the outer wall of the first plug stage portion 152, and it is attached thereto by screw thread.
For the connection for realizing first fluid channel 3 and second fluid channel 4, setting connection fluid channel 21.It is connected to fluid
Channel 21 includes intercommunicating pore 121 on the side wall for the outlet end that round tube 12 is arranged in, the company that is arranged on the side wall of the second inner cylinder 8
Through-hole 81, and it is socketed in round tube 12 and the radial intermediate limited part 22 of the second inner cylinder 8.The inner wall of limited part 22 is connected by screw thread
It connects on the outer wall of round tube 12.And the outer wall of limited part 22 is contacted with the inner wall of the second inner cylinder 8, and is arranged therebetween close
Sealing 20.
The workbench 24 that device 100 further includes bracket 23 and connect and can be rotated relative to bracket 23 with bracket 23.It will branch
Support seat 14 and plug 15 are fixedly connected on workbench 24.Workbench 24 can be rotated relative to level ground as a result, so as to mould
The developing technique of pseudo-horizontal well, straight well and inclined shaft is evaluated.
Device 100 further includes piston pump 25.The arrival end of piston pump 25 passes through drilling fluid liquid feed valve 26 and flushing liquor feed liquor
Valve 261 is connected to drilling well liquid case 1 and 2 selectivity of flushing liquid case.The outlet end of piston pump 25 is connected with first fluid channel 3,
And pressure gauge 28 and flowmeter are set on the feeding pipeline 27 from piston pump 25 to the first fluid channel 3 in the direction of round tube 12
29, and injection valve 30 is set close to the arrival end of round tube 12 on being sent into pipeline 27.Second fluid pipeline 4 passes through drilling fluid return
Valve 31 and flushing liquor return valve 32 are connected to drilling well liquid case 1 and 2 selectivity of flushing liquid case.And in second fluid pipeline 4 and drilling well
Setting reflux main valve 33 on the reflux line 271 that liquid return valve 31 is connected with flushing liquor return valve 32.Pass through this set energy
Speed and pressure that flow, speed and the pressure of drilling fluid, especially flushing liquor pass through second fluid channel are reconciled, it can be effective
Turbulent flow is carried out on ground and stratification replaces evaluation.
In the end in third annular space portion 43, photologging element (not shown), for example, high-speed camera are set.It is logical
This set is crossed, is able to record fluid flow state, observation blending interface provides analysis means for the research of developing technique.
Evaluation unit can be the title being arranged in except workbench 24.It is flowed through for weighing outside first detection cylinder 7 in drilling fluid
Forward and backward and flushing liquor flow through after quality.
The method that use device 100 is described below in detail to evaluate flushing liquor.
Cylinder 7 is detected outside Utilization assessment unit weighing first, obtains the first mass value.The will be installed to by detection cylinder 7 outside first
On two fluid channels 4, drilling fluid liquid feed valve 26 is opened, is connected to drilling well liquid case 1 with piston pump 25.Drilling fluid is logical from first fluid
Road 3 flows back to drilling well liquid case 1 by second fluid channel 4, and recycles after a certain period of time in the first annular space portion 41, removes outside first
It detects cylinder 7 to weigh, obtains the second mass value.Detection cylinder 7 outside first is installed on second fluid channel 4 again, opens flushing liquor
Liquid feed valve 261 is connected to flushing liquid case 2 with piston pump 25.Flushing liquor is flowed from first fluid channel 3 by second fluid channel 4
Washing lotion of backwashing case 2, and recycled after a certain period of time in the first annular space portion 41 with a fixed displacement, it removes detection cylinder 7 outside first and weighs,
Obtain third mass value.Utilize formula:
(the second mass value-third mass value)/(second the-the first mass value of mass value), to evaluate flushing liquor flushing effect.
The drilling fluid quality namely rinsed out using flushing liquor and the mass ratio for being bonded in the drilling fluid outside first on detection cylinder 7.
For example, embodiment 1:
Cylinder 7 is detected outside Utilization assessment unit weighing first, obtains 1231.1g.Adjustment workbench 24 is horizontality, by the
Detection cylinder 7 is installed on second fluid channel 4 outside one, is opened drilling fluid liquid feed valve 26, is made drilling fluid in the first annular space portion 41
After recycling 10min, removes detection cylinder 7 outside first and weigh, obtain 1452.1g.Detection cylinder 7 outside first is installed to second fluid again
On channel 4, common MS flushing liquor 500ml is configured, adjusts piston pump 25, flow velocity 0.5m/s in pipeline 27, pump pressure are sent into control
0.1MPa rinses 7min, and taking-up is weighed as 1333.2g, installs back on second fluid channel 4, controls velocity in pipes 0.5m/s, pump
0.1MPa is pressed, 3min is rinsed, takes out weighing 1321.5g.Flush efficiency in the flushing liquor 10 minutes is obtained by formula are as follows:
(1452.1-1321.5)/(1452.1-1231.1)=59.1%, the first inner wall for detecting cylinder 7 outside can be shown in obvious oil film.It is whole
Evaluation are as follows: MS flushing liquor is very poor to oil-base mud flushing effect under laminar flow condition.
Example 2
Same or likely with 1 method of embodiment, adjustment workbench 24 is horizontality, and obtains the first mass and be
1232.5g, the second mass are 1455.2g.Common MS flushing liquor 500ml is configured, flow velocity 1.5m/s in pipeline 27, pump pressure are controlled
0.15MPa rinses 7min, takes out weighing 1290.2g, after installing back, controls flow velocity 1.5m/s in pipeline 27, is pumped 0.15MPa,
3min is rinsed, weighing 1275.8g, flush efficiency in the flushing liquor 10 minutes are as follows: (1455.2-1275.8)/(1455.2- are taken out
1232.5)=80.6%, detection cylinder inner wall can be shown in obvious oil film.The overall evaluation are as follows: MS flushing liquor is under turbulent-flow conditions to oil base
Mud flush effect is poor.
Example 3
Same or likely with 1 method of embodiment, adjustment workbench 24 is horizontality, and obtains the first mass and be
1233.9g, the second mass are 1456.2g.SCW displacement of reservoir oil flushing liquor 500ml is configured, flow velocity 0.5m/s in pipeline 27, pump pressure are controlled
0.15MPa rinses 7min, takes out weighing 1250.2g, after installing back, controls flow velocity 0.5m/s in pipeline 27, is pumped 0.15MPa,
3min is rinsed, weighing 1241.2g is taken out.Thus flush efficiency in flushing liquor 10 minutes are as follows: (1456.2-1241.2)/
(1456.2-1233.9)=96.7%, detection cylinder inner wall have no obvious oil film.The overall evaluation are as follows: SCW flushing liquor is in laminar flow condition
Under it is good to oil-base mud flushing effect, have good oil displacement efficiency.
By above three embodiments as can be seen that using apparatus and method of the present invention, can be rushed in real simulation pit shaft
Washing lotion flow regime can carry out the evaluation of flushing liquor flush efficiency, can also carry out developing technique evaluation.
Example 4
Similarly with 1 method of embodiment, 1.4g/cm is configured in drilling well liquid case 13Conventional mud 500ml adjusts pump speed,
Flow velocity 1.0m/s in pipeline 27 is controlled, is recycled 3 minutes.It rinses in liquid case 2 and configures 1.0g/cm3Flushing liquor, and milky is added and shows
Track agent returns speed using 0.5m/s annular space and replaces mud, is shot using high-speed camera and replaces blending interface, 3 minutes shooting photos
180, measurement blending interface length 0.2m, there are apparent slurry bands.
Apparatus and method of the present invention is used as a result, can carry out the replacement efficiency analysis under different flow regimes, and energy
See exhibition flow field analysis.
The foregoing is merely the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, Ren Heben
The technical staff in field can be easy to carry out and be altered or varied in technical scope disclosed by the invention, and this change or change
Change should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Subject to enclosing.
Claims (11)
1. a kind of for evaluating the device of flushing liquor characterized by comprising
Drilling well liquid case,
Liquid case is rinsed,
First fluid channel is selectively connected to the drilling well liquid case and the flushing liquid case, the first fluid channel packet
Round tube is included,
Cricoid second fluid channel, including being examined by detection cylinder in first and being socketed in outside detected in described first outside cylinder first
The first annular space portion that cylinder is formed is surveyed, the inner wall of detection cylinder is manufactured by artificial sandstone outside described first；Wherein, the second fluid
The one end in channel is connected with the first fluid channel, and the other end selectively connects with the drilling well liquid case and the flushing liquid case
It is logical,
The second annular space portion and the third ring for being contained in the second fluid channel are respectively set at the both ends in first annular space portion
Empty portion, second annular space portion are formed by the second inner cylinder and the second outer cylinder being socketed in outside second inner cylinder, the third ring
Empty portion is formed by third inner cylinder and the third outer cylinder being socketed in outside the third inner cylinder, wherein the two of detection cylinder in described first
End respectively with second inner cylinder and the third inner cylinder detachable connection, outside described first the both ends of detection cylinder respectively with institute
State the second outer cylinder and the third outer cylinder detachable connection；
The on the outer wall for being socketed in the round tube is arranged between the axial direction for detecting cylinder in second inner cylinder and described first
One inner tube support tube, the outer wall at the both ends of the first inner tube support tube are socketed in respectively in second inner cylinder and described first
On the inner wall for detecting cylinder, setting is socketed in the round tube between the axial direction for detecting cylinder in the third inner cylinder and described first
The second inner tube support tube on outer wall, the outer wall at the both ends of the second inner tube support tube are socketed in detection in described first respectively
On the inner wall of cylinder and the third inner cylinder；
First outer tube support tube, first outer tube are set between the axial direction for detecting cylinder outside second outer cylinder and described first
The both ends of support tube be socketed in respectively second outer cylinder and described first outside detection cylinder outer wall on, the third outer cylinder with
The second outer tube support tube is set between the axial direction of detection cylinder outside described first, the both ends of the second outer tube support tube are socketed respectively
On the outer wall for detecting cylinder outside the third outer cylinder and described first；
Evaluation unit, for flowing through forward and backward quality in drilling fluid according to first annular space portion and after flushing liquor flows through
Quality evaluate the performance of flushing liquor.
2. the apparatus according to claim 1, which is characterized in that the arrival end of the round tube and the drilling well liquid case and described
It rinses liquid case to be selectively connected to, outlet end is connected to the second fluid channel.
3. the apparatus of claim 2, which is characterized in that the round tube, which is arranged in by described first, detects cylinder, institute
It states in the interior space that the second inner cylinder and the third inner cylinder are formed.
4. device according to claim 3, which is characterized in that be used to support the circle in the arrival end setting of the round tube
The support base of pipe, the third inner cylinder and the third outer cylinder, is provided with ingate and outlet opening on the support base, it is described enter
For oral pore for being connected to the round tube selectively with the drilling well liquid case with the flushing liquid case, the outlet opening is described for making
Third annular space portion is selectively connected to the drilling well liquid case with the flushing liquid case.
5. device according to claim 4, which is characterized in that in the outlet end of the round tube, setting is used to support the circle
The plug of pipe, second inner cylinder and second outer cylinder.
6. the device according to any one of claim 2 to 4, which is characterized in that the side wall in the outlet end of the round tube
The upper intercommunicating pore being arranged for being connected to second annular space portion.
7. device according to claim 5, which is characterized in that further include bracket and connect with the bracket and can be relative to
The workbench of the bracket rotation, the support base and the plug are arranged on the workbench.
8. device according to claim 4, which is characterized in that be arranged on the first fluid channel for controlling fluid
The control element of flow velocity and pressure.
9. device according to claim 5, which is characterized in that the end setting photologging member in third annular space portion
Part.
10. a kind of using the method for evaluating flushing liquor to device described in any one of 9 according to claim 1 including following
Step:
Step 1: cylinder is detected outside weighing described first, obtains the first mass value；
Step 2: it connect the drilling well liquid case with the first fluid channel, makes circulation of drilling fluid；
Step 3: cylinder is detected outside weighing described first, obtains the second mass value；
Step 4: it connect the flushing liquid case with the first fluid channel, recycles flushing liquor；
Step 5: cylinder is detected outside weighing described first, obtains third mass value；
Step 6: the effect of flushing liquor is evaluated based on first mass value, second mass value and the third mass value
Fruit.
11. according to the method described in claim 10, it is characterized in that, before the step 6, be repeated in step 4 and
Step 5.
Priority Applications (1)
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| CN108590638A (en) * | 2018-03-14 | 2018-09-28 | 长江大学 | Evaluate experimental rig and method that prepad fluid remains pit shaft drilling fluid cleaning efficiency |
| CN110617018B (en) * | 2019-09-16 | 2021-06-11 | 西南石油大学 | Device and method for evaluating flushing efficiency of filter cake of well cementation cement injection drilling fluid |
| CN113125307A (en) * | 2019-12-31 | 2021-07-16 | 中国石油化工股份有限公司 | Method and device for evaluating drag reducer of finished oil |
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| RU2055176C1 (en) * | 1992-02-27 | 1996-02-27 | Смеркович Евгений Соломонович | Acoustic method for diagnosis of cement stone quality behind well surface casing |
| CN201650172U (en) * | 2010-01-28 | 2010-11-24 | 长江大学 | Front flushing fluid evaluator for well cementation |
| CN202064863U (en) * | 2011-06-03 | 2011-12-07 | 新疆贝肯能源工程股份有限公司 | Evaluation tool of cementing preposed flush fluid |
| WO2014099910A1 (en) * | 2012-12-20 | 2014-06-26 | Saudi Arabian Oil Company | Method for determining the erosional characterises of mudcakes to predict ease of mudcake removal or cleaning efficiency of cleaning/washing/spacer fluids |
| CN203499601U (en) * | 2013-06-04 | 2014-03-26 | 中国石油化工股份有限公司 | Well-cementing spacer fluid evaluation device |
| CN203515574U (en) * | 2013-10-21 | 2014-04-02 | 中国石油化工股份有限公司 | Cementing fluid washing efficiency evaluation device |
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