CN107654203A - Drilling hydraulic differential density sensor current stabilization bogey - Google Patents
Drilling hydraulic differential density sensor current stabilization bogey Download PDFInfo
- Publication number
- CN107654203A CN107654203A CN201710898176.7A CN201710898176A CN107654203A CN 107654203 A CN107654203 A CN 107654203A CN 201710898176 A CN201710898176 A CN 201710898176A CN 107654203 A CN107654203 A CN 107654203A
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- Prior art keywords
- ball cover
- wing
- lee side
- nose
- sensor
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- 238000005553 drilling Methods 0.000 title claims abstract description 72
- 230000006641 stabilisation Effects 0.000 title claims abstract description 21
- 238000011105 stabilization Methods 0.000 title claims abstract description 21
- FWQHNLCNFPYBCA-UHFFFAOYSA-N fluoran Chemical compound C12=CC=CC=C2OC2=CC=CC=C2C11OC(=O)C2=CC=CC=C21 FWQHNLCNFPYBCA-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000000203 mixture Substances 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 6
- 239000012530 fluid Substances 0.000 abstract description 48
- 238000010276 construction Methods 0.000 abstract description 7
- 239000007790 solid phase Substances 0.000 description 18
- 239000002245 particle Substances 0.000 description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000001739 density measurement Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000011010 flushing procedure Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/08—Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/26—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring pressure differences
Abstract
The present invention provides a kind of drilling hydraulic differential density sensor current stabilization bogey, belong to oil-gas exploration technical field, its structure includes sensor pole and cell pressure diaphragm, cell pressure diaphragm is configured on the shaft of sensor pole, and the periphery of the sensor pole residing for cell pressure diaphragm is provided with ball cover；Ball cover is formed by the ball cover of fluoran stream surface half and the ball cover two parts of lee side half with respect to snapping, and sensor pole runs through spherical shell in longitudinal axis direction；Meet stream reversion aerocurve and back of the body stream reversion aerocurve surrounds down the mouth that hangs in bottom；The sensor pole mouth that hung from down is extended downwardly and passed；Concentrated in the spherical crown surface of the ball cover of lee side half and uniformly offer wing of nose hole in one-third of the area, wing of nose hole filter screen is formed towards consistent wing of nose hole.Density measure error is eliminated, provides accurate density data to establish the drilling fluid system of safety, the present invention is advantageous to wellbore construction safety；Truly reflect drilling fluid density.
Description
Technical field
The present invention relates to oil-gas exploration technical field, specifically a kind of drilling hydraulic differential density sensor current stabilization is held
Carry and put.
Background technology
Drilling fluid refers to the fluid media (medium) used in drilling process.Drilling fluid jargon is referred to as mud.Drilling fluid can be liquid
Body or gas, therefore, drilling fluid should definitely be referred to as drilling fluid.In drilling process, the circulation flushing medium that is used in hole, again
Claim drilling fluid.Drilling fluid can be divided into clear water, mud, free clay phase flushing liquor, emulsion, foam and compression by constituent
Air etc..Clear water is to use earliest drilling fluid, easy to use without processing, suitable for complete rock stratum and the ground having abundant water resources
Area.Mud is widely used drilling fluid, is primarily adapted for use in the holes such as loose, cranny development, easy collapsing and breaking, water-swellable peeling
Wall unstable formation.The main function of drilling fluid is：（1）Clean shaft bottom, cutting carring；（2）Cooling and lubrication drill bit and drill string；
（3）Balance rock of borehole lateral pressure；（4）Balance（Control）Strata pressure；（5）Suspension landwaste and heavy weight additive；（6）It can be sunk on ground
Except sand and landwaste；（7）Effectively transmit hydraulic power；（8）Bear the part gravity of drilling rod and sleeve pipe；（9）Drilled strata is provided
Great mass of data；（10）Hydraulic fracture rock.In order to improve the ability of Transport of Drilling Cutting In A, stabilizing borehole and prevent complicated feelings
The purpose that condition occurs, the density of conventional drilling liquid are higher than 1g/cm3.Under complex drilling operating mode, such as well kick, blowout, leakage,
Need to detect drilling fluid density at any time, at exploration scene, drilling fluid density detection device is density sensor.
In exploration, drilling fluid is a kind of complicated system, wherein containing formation fluid（Oil, gas and water）, crush through drill bit
Landwaste solid phase particles and other additives afterwards.The drilling fluid density detected by sensor should be simple fluid density,
But due to often being influenceed the measurement of actual density value by other materials interference, and drilling fluid density value is item in well control work
Highly important parameter, so, how exactly measuring while drilling drilling fluid density, be compound logging an important function
Effect.
At exploration scene, the metering system of drilling fluid density substantially has two kinds, and one kind is non-online mechanical densitometer
（Mud claims）, another kind is online continuous pressure difference density sensor, and what compound logging measurement drilling fluid density used is exactly to press
Differential density sensor.It is non-online mechanical densitometer（Mud claims）What is measured is the Static Density of drilling fluid, is having time
Interruption；The dynamic density of the drilling fluid of online continuous pressure difference density sensor measurement, no time break is a kind of with the company of boring
Continuous metering system.Differential density sensor is made up of two pressure-sensitive diaphragms according to the arrangement of certain vertical interval, upper and lower diaphragm
Pressure difference calculate drilling fluid density.But due to the presence of the solid phase particles in drilling fluid and different densities oil gas water, it is this
Pressure difference often cannot get accurate measurement, so as to cause non-online mechanical densitometer（Mud claims）With online continuous pressure difference density
Measurement error between sensor be present, and the presence of this measurement error can directly influence probing safety and to complex situations
The problem of processing etc., basic reason is exactly that dynamic solid phase particles generate extra interference to pressure-sensitive diaphragm.In order to prevent this
Kind interference, generally install a porose disc additional in the periphery of pressure-sensitive diaphragm, solid phase particles pressure-bearing obstructed to pressure-sensitive diaphragm by porose disc,
But really, so that the normalization of density measure error be present, it directly affects without solving root problem in actual applications
Work quality and exploration benefit.Sum up, the problem of drilling fluid density measurement is present and caused non-positive effect mainly have
The following aspects：
(1) density measure error can lead to not the drilling fluid system for establishing safety, be unfavorable for wellbore construction safety；
(2) it can not truly reflect drilling fluid density, cause drilling fluid allocation waste of material, add exploration cost；
(3) density measure is forbidden, and can not accurately establish bottom pressure system, it is difficult to maintain the balance of bottom pressure and bottom pressure
Relation；
(4) density measure inaccuracy is unfavorable for carrying shaft bottom landwaste, and well-flushing is not thorough, easily causes the generation of down-hole accident；
(5) after complex accident occurring, the error in process problem decision-making is easily caused without accurate density reference, is directly influenced
Exploration benefit；
(6) in order to maintain density measure exactly, operating personnel need, through conventional clear water clean and maintenance density sensor, to add
Labor intensity, it is unfavorable for occupational health protection and wastes water resource；
(7) it is unfavorable for the performance of compound logging job function in oil-gas exploration, reduces work quality.
In a word, drilling fluid density measurement accurately and timely only in this way must just can ensure that safe and high quality exploration construction, and solve
Certainly the key of this problem is sought to the presence of a kind of device that can eliminate drilling fluid density measurement error.
The content of the invention
The technical assignment of the present invention is that solve the deficiencies in the prior art, there is provided a kind of drilling hydraulic differential density sensor is steady
Flow bogey.
The technical scheme is that realize in the following manner, drilling hydraulic differential density sensor current stabilization carrying dress
Put, its structure includes sensor pole and cell pressure diaphragm, and cell pressure diaphragm configures the shaft in sensor pole
On,
The periphery of sensor pole residing for cell pressure diaphragm is provided with ball cover；
Ball cover is formed by the ball cover of fluoran stream surface half and the ball cover two parts of lee side half with respect to snapping,
The evagination spherical crown surface of the ball cover of fluoran stream surface half towards the left side of sensor pole,
The evagination spherical crown surface of the ball cover of lee side half towards the right side of sensor pole,
The ball cover of fluoran stream surface half and the ball cover same level transverse axis of lee side half are oppositely arranged, and relative ball cover edge seal connection structure
Spherical shell intracavitary is enclosed in into a spherical shell shape structure, and by the place sensor branch bar segment containing cell pressure diaphragm；
Sensor pole runs through spherical shell in longitudinal axis direction；
The stream of meeting that the bottom of the ball cover of fluoran stream surface half is provided with back-flexing curvature using nearly bottom as flex point inverts aerocurve, meets stream reversion
Aerocurve oliquely downward bends receipts towards left side fluoran stream surface to be stopped；
The back of the body stream that the bottom of the ball cover of lee side half is provided with back-flexing curvature using nearly bottom as flex point inverts aerocurve, back of the body stream reversion
Aerocurve oliquely downward bends receipts towards right side lee side to be stopped；
The bottom flex point of the ball cover of fluoran stream surface half and the bottom flex point of the ball cover of lee side half are in the same horizontal position；
The lower exhibition for meeting stream reversion aerocurve is highly more than the lower exhibition height of back of the body stream reversion aerocurve；
Meet stream reversion aerocurve and back of the body stream reversion aerocurve surrounds down the mouth that hangs in bottom；
The sensor pole mouth that hung from down is extended downwardly and passed；
Concentrated in the spherical crown surface of the ball cover of lee side half and uniformly offer wing of nose hole in one-third of the area, towards consistent nose
Foramen alare forms wing of nose hole filter screen, the spherical crown surface of the covering of wing of nose hole filter screen towards cell pressure diaphragm, the wing of nose in wing of nose hole by
The ball cover cover of lee side half routs up composition to the periphery, and the wing of nose opens and forms hole path between face and wing of nose hole；
The spherical shell top that the ball cover of fluoran stream surface half and the ball cover of lee side half are formed is fixedly arranged on sensor pole by flange lock
On, spherical shell chamber hangs mouth and lower section external world open communication under, and spherical shell chamber is outer by wing of nose hole filter screen and lee side side
Boundary connects.
Under hang mouth be arranged to chamfer bell mouth shape.
The hole path in wing of nose hole has by diameter of the direction of the ball cover inner chamber of lee side half to the external world along the ball cover of lee side half
The direction of direction laterally obliquely.
With the above-mentioned drilling hydraulic differential density sensor current stabilization bogey being close, its structure includes sensor pole
With cell pressure diaphragm, cell pressure diaphragm is configured on the shaft of sensor pole,
The periphery of sensor pole residing for cell pressure diaphragm is provided with integral overall ball cover；
The left side of the overall ball cover of one is fluoran stream surface, and the right side of integral overall ball cover is the ball cover of lee side half,
The evagination spherical crown surface of fluoran stream surface towards the left side of sensor pole,
The evagination spherical crown surface of lee side towards the right side of sensor pole,
Place sensor branch bar segment containing cell pressure diaphragm is enclosed in the spherical shell enclosed in ball cover by fluoran stream surface and lee side
Intracavitary；
Sensor pole runs through spherical shell in longitudinal axis direction；
The bottom of the spherical shell of overall ball cover proximal pole point turn up curved surface extend out to be formed under hang mouth；
The sensor pole mouth that hung from down is extended downwardly and passed；
Concentrated in the spherical crown surface of lee side and uniformly offer wing of nose hole in one-third of the area, towards consistent wing of nose hole structure
Into wing of nose hole filter screen, the spherical crown surface of the covering of wing of nose hole filter screen is towards cell pressure diaphragm, and the wing of nose in wing of nose hole is by lee side
Half ball cover cover routs up composition to the periphery, and the wing of nose opens and forms hole path between face and wing of nose hole；
The spherical shell top that fluoran stream surface and lee side are formed is fixedly arranged on sensor pole by flange lock, and spherical shell chamber passes through
Under hang mouth and lower section external world open communication, spherical shell chamber is connected by wing of nose hole filter screen and the extraneous of lee side side.
Under hang mouth be arranged to chamfer bell mouth shape.
The hole path in wing of nose hole has by diameter of the direction of the ball cover inner chamber of lee side half to the external world along the ball cover of lee side half
The direction of direction laterally obliquely.
The caused compared with prior art beneficial effect of the present invention is：
The drilling hydraulic differential density sensor current stabilization bogey has following performance and advantage：
(1) density measure error is eliminated, accurate density data is provided to establish the drilling fluid system of safety, is advantageous to bore
Well construction safety；
(2) drilling fluid density is truly reflected, drilling fluid allocation materials application has been saved, has reduced exploration cost；
(3) density measure is reliable, can establish bottom pressure system exactly, beneficial to the balance for maintaining bottom pressure and bottom pressure
Relation；
(4) density measure is accurately beneficial to drilling fluid carrying shaft bottom landwaste, and well-flushing is thorough, reduces down-hole accident Probability；
(5) accurately drilling fluid density measurement is advantageous to the formulation of challenge processing decision-making, improves exploration benefit；
(6) density measure is accurate, and operating personnel need not reduce labor intensity through conventional clear water clean and maintenance density sensor,
Be advantageous to occupational health protection, save water resource；
(7) be advantageous to job function of the compound logging in oil-gas exploration to play, ensure that work quality.
The drilling hydraulic differential density sensor current stabilization bogey fully improves drilling fluid in practical application at the scene
The accuracy of density measure, be advantageous to the safety of Exploration of Oil And Gas with efficiently, reduce the labor intensity of operating personnel, favorably
Protected in occupational health.Simultaneously, it is ensured that work quality, be also beneficial to environmental protection.
The drilling hydraulic differential density sensor current stabilization bogey can be widely applied to comprehensive in oil and gas exploration
Close in well logging construction, meanwhile, it is also applicable in other career fields for needing to carry out fluid density measurement.The device is to ensure that standard
The really important device of detection drilling fluid density, it is the indispensable equipment of compound logging construction, is advantageous to the safety of oil-gas exploration
With it is efficient.
The drilling hydraulic differential density sensor current stabilization carrier design is scientific and reasonable, and assembly operation is easy, without spy
It is different to safeguard, be simple in construction, safe and reliable, easy to use, have good value for applications.
Brief description of the drawings
Accompanying drawing 1 is the structural representation of embodiments of the invention one；
Accompanying drawing 2 is the structural representation of embodiments of the invention two.
Mark in accompanying drawing represents respectively：
1st, sensor pole, 2, cell pressure diaphragm,
3rd, ball cover, 4, the ball cover of fluoran stream surface half, 5, the ball cover of lee side half,
6th, meet stream reversion aerocurve, 7, the back of the body stream reversion aerocurve,
8th, hang mouth under,
9th, wing of nose hole, 10, wing of nose hole filter screen, 11, the wing of nose, 12, hole path,
13rd, flange latches, and 14, cover flange.
Embodiment
The drilling hydraulic differential density sensor current stabilization bogey of the present invention is said in detailed below below in conjunction with the accompanying drawings
It is bright.
Embodiment one：
As shown in drawings, drilling hydraulic differential density sensor current stabilization bogey of the invention, its structure include sensor branch
Bar 1 and cell pressure diaphragm 2, cell pressure diaphragm 2 are configured on the shaft of sensor pole 1, cell pressure diaphragm 2
It is fixedly connected on by support on the shaft of sensor pole 1,
The periphery of sensor pole 1 residing for cell pressure diaphragm 2 is provided with ball cover 3；
Ball cover 3 is formed by the ball cover 4 of fluoran stream surface half and the two parts of half ball cover of lee side 5 by cover flange 14 with respect to snapping,
The evagination spherical crown surface of the ball cover 4 of fluoran stream surface half towards the left side of sensor pole 1,
The evagination spherical crown surface of the ball cover 5 of lee side half towards the right side of sensor pole 1,
The ball cover 4 of fluoran stream surface half and the same level transverse axis of half ball cover of lee side 5 are oppositely arranged, and relative ball cover edge seal connects
A spherical shell shape structure is formed, and the place sensor branch bar segment containing cell pressure diaphragm is enclosed in spherical shell intracavitary；
Sensor pole runs through spherical shell in longitudinal axis direction；
The stream of meeting that the bottom of the ball cover 4 of fluoran stream surface half is provided with back-flexing curvature using nearly bottom as flex point inverts aerocurve 6, and it is anti-to meet stream
Turn aerocurve and oliquely downward bend receipts towards left side fluoran stream surface to stop；
The back of the body stream that the bottom of the ball cover 5 of lee side half is provided with back-flexing curvature using nearly bottom as flex point inverts aerocurve 7, and back of the body stream is anti-
Turn aerocurve and oliquely downward bend receipts towards right side lee side to stop；
The bottom flex point of the ball cover of fluoran stream surface half and the bottom flex point of the ball cover of lee side half are in the same horizontal position；
The lower exhibition for meeting stream reversion aerocurve is highly more than the lower exhibition height of back of the body stream reversion aerocurve；
Meet stream reversion aerocurve and back of the body stream reversion aerocurve surrounds down the mouth 8 that hangs in bottom；
The mouth 8 that hung from down of sensor pole 1 is extended downwardly and passed；
Concentrated in the spherical crown surface of the ball cover of lee side half and uniformly offer wing of nose hole 9 in one-third of the area, towards consistent
Wing of nose hole forms wing of nose hole filter screen 10, and the spherical crown surface of the covering of wing of nose hole filter screen is towards cell pressure diaphragm, the nose in wing of nose hole
The wing 11 is routed up and formed to the periphery by the ball cover cover of lee side half, and the wing of nose opens composition hole path 12 between face and wing of nose hole；
The spherical shell top that the ball cover of fluoran stream surface half and the ball cover of lee side half are formed is fixedly arranged on sensor branch by flange lock 13
On bar, spherical shell chamber hangs mouth and lower section external world open communication under, and spherical shell chamber passes through wing of nose hole filter screen and lee side side
External world's connection.
Under hang mouth be arranged to chamfer bell mouth shape.
The hole path in wing of nose hole has by diameter of the direction of the ball cover inner chamber of lee side half to the external world along the ball cover of lee side half
The direction of direction laterally obliquely.
Embodiment two：
Drilling hydraulic differential density sensor current stabilization bogey, its structure include sensor pole and cell pressure diaphragm,
Cell pressure diaphragm is configured on the shaft of sensor pole, and cell pressure diaphragm 2 is fixedly connected on sensing by support
On the shaft of device pole 1,
The periphery of sensor pole residing for cell pressure diaphragm is provided with integral overall ball cover；
The left side of the overall ball cover of one is fluoran stream surface, and the right side of integral overall ball cover is the ball cover of lee side half,
The evagination spherical crown surface of fluoran stream surface towards the left side of sensor pole,
The evagination spherical crown surface of lee side towards the right side of sensor pole,
Place sensor branch bar segment containing cell pressure diaphragm is enclosed in the spherical shell enclosed in ball cover by fluoran stream surface and lee side
Intracavitary；
Sensor pole runs through spherical shell in longitudinal axis direction；
The bottom of the spherical shell of overall ball cover extends out to form under bell mouth shape the mouth that hangs in the proximal pole point curved surface that turns up；
The sensor pole mouth that hung from down is extended downwardly and passed；
Concentrated in the spherical crown surface of lee side and uniformly offer wing of nose hole in one-third of the area, towards consistent wing of nose hole structure
Into wing of nose hole filter screen, the spherical crown surface of the covering of wing of nose hole filter screen is towards cell pressure diaphragm, and the wing of nose in wing of nose hole is by lee side
Half ball cover cover routs up composition to the periphery, and the wing of nose opens and forms hole path between face and wing of nose hole；
The spherical shell top that fluoran stream surface and lee side are formed is fixedly arranged on sensor pole by flange lock, and spherical shell chamber passes through
Under hang mouth and lower section external world open communication, spherical shell chamber is connected by wing of nose hole filter screen and the extraneous of lee side side.
Under hang mouth be arranged to chamfer bell mouth shape.
The hole path in wing of nose hole has by diameter of the direction of the ball cover inner chamber of lee side half to the external world along the ball cover of lee side half
The direction of direction laterally obliquely.
Drilling hydraulic differential density sensor current stabilization bogey as current stabilization filter is to hemisphere, to being buckled in
On the sensor body of rod, overall material is high-quality stainless steel.
(1) to hemisphere.Sphere diameter 130mm, wall thickness 1.4mm.It is two independent hemispheres to hemisphere, passes through lock
Button is docked on sensor pole.It is closed to hemispheroidal one of hemisphere, is in closed hemispheroidal lower section
Aerofoil profile opening designs, and opening presses tangential direction opening, the downwardly and outwardly curved span in side, spanwise length by spheroid bottom angle
For 50mm（The long wing）.1/3 area design to the middle and lower part sphere on hemispheroidal another hemisphere is filter structure, and filter screen is
Wing of nose hole, aperture 3mm, whole wing of nose hole filtering net surface arrange horizontal by 15o angles obliquely, and the spheroid bottom is opening, is opened
Mouth presses tangential direction opening by spheroid bottom angle, and downwardly and outwardly curved spademan, spademan length are 30mm（Short limb）.Half-and-half
The most narrow place arc distance of the two long wing and the short limb arc opening of spheroid is 40mm, and the widest part arc distance is 50mm, both wings
It is asymmetric.
(2) when drilling fluid presses horizontal direction by closed hemisphere with certain flow velocity, the cambered surface drainage of spheroid is made
Acceleration of motion is provided with for the solid phase particles in drilling fluid, reduces the holdup time of solid phase particles；When drilling fluid is with one
In when flowing obliquely, the arcuate structure of the long wing can reduce solid phase particles and enter fixed flow velocity to loss solid phase particles around
Enter to hemispheroidal probability.
(3) hemisphere is used for wing of nose hole entering drilling fluid, wing of nose hole obliquely can make full use of solid phase
Grain proportion conference the characteristics of hanging naturally and reduce the probability that solid phase particles enter spheroid.When drilling fluid with certain flow velocity in oblique
When flowing up, the arcuate structure of short limb can reduce solid phase particles and enter to hemispheroidal to loss solid phase particles around
Probability.
(4) in real brill, the device is adjusted to make drilling fluid flow from left to right from the device, solid phase particles are closed
Globally tangential direction is moved under sphere effect, and in the presence of flow tendency, solid phase particles are not easy to assemble at filter screen.The long wing
The space formed with short limb cambered surface can produce the potential energy to bottom peripheral motor to solid phase particles, be also unfavorable for solid phase particles and gather
Collection.Into can also be hung downwards in the presence of self gravitation to hemispheroidal solid phase particles, formed by the long wing and short limb
Spheroid is flowed out between hole, force transducer pressure-sensitive diaphragm will not be stopped in spheroid body.Meanwhile the asymmetric design of the long wing and short limb,
The potential energy that drilling fluid flows from left to right is taken full advantage of, farthest reduces the possibility of solid phase particles delay.
Claims (6)
1. drilling hydraulic differential density sensor current stabilization bogey, including sensor pole and cell pressure diaphragm, sensing
Device pressure-sensitive diaphragm is configured on the shaft of sensor pole, it is characterised in that：
The periphery of sensor pole residing for cell pressure diaphragm is provided with ball cover；
Ball cover is formed by the ball cover of fluoran stream surface half and the ball cover two parts of lee side half with respect to snapping,
The evagination spherical crown surface of the ball cover of fluoran stream surface half towards the left side of sensor pole,
The evagination spherical crown surface of the ball cover of lee side half towards the right side of sensor pole,
The ball cover of fluoran stream surface half and the ball cover same level transverse axis of lee side half are oppositely arranged, and relative ball cover edge seal connection structure
Spherical shell intracavitary is enclosed in into a spherical shell shape structure, and by the place sensor branch bar segment containing cell pressure diaphragm；
Sensor pole runs through spherical shell in longitudinal axis direction；
The stream of meeting that the bottom of the ball cover of fluoran stream surface half is provided with back-flexing curvature using nearly bottom as flex point inverts aerocurve, meets stream reversion
Aerocurve oliquely downward bends receipts towards left side fluoran stream surface to be stopped；
The back of the body stream that the bottom of the ball cover of lee side half is provided with back-flexing curvature using nearly bottom as flex point inverts aerocurve, back of the body stream reversion
Aerocurve oliquely downward bends receipts towards right side lee side to be stopped；
The bottom flex point of the ball cover of fluoran stream surface half and the bottom flex point of the ball cover of lee side half are in the same horizontal position；
The lower exhibition for meeting stream reversion aerocurve is highly more than the lower exhibition height of back of the body stream reversion aerocurve；
Meet stream reversion aerocurve and back of the body stream reversion aerocurve surrounds down the mouth that hangs in bottom；
The sensor pole mouth that hung from down is extended downwardly and passed；
Concentrated in the spherical crown surface of the ball cover of lee side half and uniformly offer wing of nose hole in one-third of the area, towards consistent nose
Foramen alare forms wing of nose hole filter screen, the spherical crown surface of the covering of wing of nose hole filter screen towards cell pressure diaphragm, the wing of nose in wing of nose hole by
The ball cover cover of lee side half routs up composition to the periphery, and the wing of nose opens and forms hole path between face and wing of nose hole；
The spherical shell top that the ball cover of fluoran stream surface half and the ball cover of lee side half are formed is fixedly arranged on sensor pole by flange lock
On, spherical shell chamber hangs mouth and lower section external world open communication under, and spherical shell chamber is outer by wing of nose hole filter screen and lee side side
Boundary connects.
2. drilling hydraulic differential density sensor current stabilization bogey according to claim 1, it is characterised in that：Under hang
Mouth is arranged to chamfer bell mouth shape.
3. drilling hydraulic differential density sensor current stabilization bogey according to claim 1, it is characterised in that：Wing of nose hole
Hole path have it is oblique laterally by diametric(al) of the ball cover inner chamber of lee side half to extraneous direction along the ball cover of lee side half
Under direction.
4. drilling hydraulic differential density sensor current stabilization bogey, including sensor pole and cell pressure diaphragm, sensing
Device pressure-sensitive diaphragm is configured on the shaft of sensor pole, it is characterised in that：
The periphery of sensor pole residing for cell pressure diaphragm is provided with integral overall ball cover；
The left side of the overall ball cover of one is fluoran stream surface, and the right side of integral overall ball cover is the ball cover of lee side half,
The evagination spherical crown surface of fluoran stream surface towards the left side of sensor pole,
The evagination spherical crown surface of lee side towards the right side of sensor pole,
Place sensor branch bar segment containing cell pressure diaphragm is enclosed in the spherical shell enclosed in ball cover by fluoran stream surface and lee side
Intracavitary；
Sensor pole runs through spherical shell in longitudinal axis direction；
The bottom of the spherical shell of overall ball cover proximal pole point turn up curved surface extend out to be formed under hang mouth；
The sensor pole mouth that hung from down is extended downwardly and passed；
Concentrated in the spherical crown surface of lee side and uniformly offer wing of nose hole in one-third of the area, towards consistent wing of nose hole structure
Into wing of nose hole filter screen, the spherical crown surface of the covering of wing of nose hole filter screen is towards cell pressure diaphragm, and the wing of nose in wing of nose hole is by lee side
Half ball cover cover routs up composition to the periphery, and the wing of nose opens and forms hole path between face and wing of nose hole；
The spherical shell top that fluoran stream surface and lee side are formed is fixedly arranged on sensor pole by flange lock, and spherical shell chamber passes through
Under hang mouth and lower section external world open communication, spherical shell chamber is connected by wing of nose hole filter screen and the extraneous of lee side side.
5. drilling hydraulic differential density sensor current stabilization bogey according to claim 4, it is characterised in that：Under hang
Mouth is arranged to chamfer bell mouth shape.
6. drilling hydraulic differential density sensor current stabilization bogey according to claim 4, it is characterised in that：Wing of nose hole
Hole path have it is oblique laterally by diametric(al) of the ball cover inner chamber of lee side half to extraneous direction along the ball cover of lee side half
Under direction.
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| CN111584105A (en) * | 2020-05-19 | 2020-08-25 | 上海核工程研究设计院有限公司 | Underwater dynamic pressure sensor mounting device |
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