CN103063422A - Sand control screen sand-blocking precision detecting device and detecting method - Google Patents
Sand control screen sand-blocking precision detecting device and detecting method Download PDFInfo
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- CN103063422A CN103063422A CN2012105677851A CN201210567785A CN103063422A CN 103063422 A CN103063422 A CN 103063422A CN 2012105677851 A CN2012105677851 A CN 2012105677851A CN 201210567785 A CN201210567785 A CN 201210567785A CN 103063422 A CN103063422 A CN 103063422A
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Abstract
The invention discloses a sand control screen sand-blocking precision detecting device and a detecting method. The sand control screen sand-blocking precision detecting device comprises an autoclave body, a distribution net pipe, and a stirring assembly, wherein a sand adding port is formed in the upper end of the autoclave body, a liquid outlet is formed in the lower end of the autoclave body, a plurality of liquid inlet holes are formed in the side wall of the autoclave body, a sand control screen sample is contained in the autoclave body, the sand control screen sample is provided with a liquid outlet channel, and the liquid outlet channel is opposite to the liquid outlet; the distribution net pipe is located in the autoclave body and sleeved outside the sand control screen sample, an annular space is formed between the distribution net pipe and the sand control screen sample, and sand grains are poured into the annular space; and the stirring assembly is located in the autoclave body and comprises a plurality of stirring paddles, the plurality of stirring paddles are located in the annular space and rotate around the peripheral circumferential direction of the sand control screen pipe. The sand control screen sand-blocking precision detecting device and the detecting method can truly and reliably detect the sand-blocking precision of a sand control screen, and are good in repeatability.
Description
Technical field
The present invention is relevant for a kind of Filter Examination device and detection method, especially relevant for a kind of oil well sand control screen tube sand block accuracy detecting device and detection method.
Background technology
The loose sand oil accumulation ubiquity phenomenon of shaking out, sand production causes the oil well production cycle to shorten, oil well output subtracts greatly, even cause oil well to stop production, scrap, and seriously restricted giving full play to of oil well potential, simultaneously winning apparatus and surface technology are done great damage, therefore, for sand production petroleum reservoir, sand control is that indispensable link is exploited in hydrocarbon-bearing pool, and sand control screen is one of instrument important in the Oil/gas Well anti-sand process technology.The sand block precision of sand control screen refers to the largest particles particle size values by sand control screen, and it is wide with the maximum seam of sand control screen or the aperture is relevant, and the sand block precision is most important technical parameter in the design of screen sand control technology, and it directly affects final sand controlling result.But owing to lacking the standard method that detects sand control screen sand block precision, test method and the test condition of different manufacturers test sand control screen sand block precision are different, and the test data poor repeatability is given the design of sand control screen and preferably brought very large difficulty.
There is a kind of device that can be used for detecting sand control screen sand block precision in the prior art, it is that the sand control screen sample is installed in the autoclave body, in autoclave body, insert reservoir sand, around autoclave body, inject fluid with certain flow, after fluid enters autoclave body, by forming uniform radial flow behind one deck shunting net, enter afterwards in the reservoir sand in the autoclave body, by the sand control screen sample, flow out from the autoclave body liquid outlet at last.Flow out autoclave body less than sand control screen sample seam the reservoir sand wide or aperture with fluid, collect the reservoir sand that flows out, measure its size-grade distribution, with the maximum sand block precision of particle diameter as this sand control screen sample of shaking out.This unit simulation the actual condition of well screen sand control, it is suitable for carrying out the preferred of different screen casings for a certain block or certain mouthful of oil well, but this device is owing to existing following problem, and cause the measured maximum particle diameter that shakes out can not truly reflect the sand block precision of sand control screen, and the test result error is larger:
1) is filled in the outer reservoir sand of sand control screen sample, because " bridges formation " effect, formed one deck sand block barrier at the periphery wall self of sand control screen sample, stopped that the sand grains in or aperture wide less than the sand screen pipe seam passes through the sand control screen sample;
2) this device adopts reservoir sand or simulated formation sand to test, grain diameter by the sand control screen sample not only is subjected to the sand control screen sample to stitch the impact in wide or aperture, also be subject to a great extent simultaneously the impact of the factors such as particle diameter, size-grade distribution, sand particle size, therefore, the result that tests under Different Strata sand or simulated formation sand of identical sand control screen sample is different;
3) because the filling compaction of the reservoir sand that each test is inserted in the autoclave body is different, cause the test result of sand control screen sample is brought larger error.
Therefore, be necessary to provide a kind of proving installation and detection method of new sand control screen sand block precision, overcome defects.
Summary of the invention
The purpose of this invention is to provide a kind of sand control screen sand block accuracy detecting device, this pick-up unit can detect the sand block precision of sand control screen true and reliablely, and good reproducibility.
Another object of the present invention provides a kind of sand control screen sand block accuracy checking method, and this detection method can detect the sand block precision of sand control screen true and reliablely, and good reproducibility.
Above-mentioned purpose of the present invention can adopt following technical proposal to realize:
The invention provides a kind of sand control screen sand block accuracy detecting device, described sand control screen sand block accuracy detecting device comprises:
Autoclave body, its upper end is provided with and adds the sand mouth, and its lower end is provided with liquid outlet, offer a plurality of inlet openings on the sidewall of described autoclave body, be equipped with the sand control screen sample in the described autoclave body, described sand control screen sample has liquid outlet channel, and described liquid outlet channel is relative with described liquid outlet;
The shunting webmaster, it is positioned at described autoclave body, and is set in outside the described sand control screen sample, is formed with annular space between described shunting webmaster and the described sand control screen sample, is perfused with sand grains in the described annular space;
Mixing component, it is positioned at described autoclave body, and described mixing component comprises a plurality of paddles, and described a plurality of paddles are positioned at described annular space, and rotate in a circumferential direction around the periphery of described sand control screen sample.
In preferred embodiment, a described paddle side shaft relative with described shunting webmaster is to being provided with the multi-disc blade, a described paddle side shaft relative with described sand control screen sample is to being provided with a plurality of hairbrush, and described hairbrush contacts with the outer wall of described sand control screen sample.
In preferred embodiment, described mixing component also comprises a plurality of telescopic connecting rods, one end of described telescopic connecting rod links to each other with the upper end of described paddle, and its other end is connected with coupling lever, and the end that described coupling lever passes described autoclave body links to each other with a motor.
In preferred embodiment, described telescopic connecting rod is comprised of two sheet metals, offers a plurality of adjusting holes on the described sheet metal, and described two sheet metals wear to be connected in the adjusting holes different on described two sheet metals by a connection piece and link together.
In preferred embodiment, described shunting net pipe has parent tube and metal net, and described metal net is wrapped in the outside of described parent tube.
In preferred embodiment, the top and bottom of described shunting webmaster contact with the top and bottom sealing of described autoclave body by packing washer respectively.
In preferred embodiment, the sealing of the upper end of described sand control screen sample is provided with the sample top cover, and its lower end sealing is provided with the sample base, and described sample base links to each other with the liquid outlet sealing of described autoclave body.
In preferred embodiment, the tapered funnel-form of the liquid outlet of described autoclave body.
In preferred embodiment, described sand grains is spheric grain, and its particle size range is 0.02mm～1.6mm.
In preferred embodiment, the lower end of described autoclave body is provided with support.
The present invention also provides a kind of sand control screen sand block accuracy checking method that adopts above-mentioned sand control screen sand block accuracy detecting device to detect sand control screen sand block precision, and described sand control screen sand block accuracy checking method comprises the steps:
A) from one section sand control screen sample of sand control screen cutting to be detected, described sand control screen sample is put into the autoclave body of described sand control screen sand block accuracy detecting device;
B) select sand grains, the particle size range of described sand grains is 0.02mm～1.6mm;
C) the described sand grains of the different-grain diameter size of select is mixed after, put into annular space between the shunting webmaster of described sand control screen sample and described autoclave body from the sand mouth that adds of described autoclave body;
D) filling liquid in the described autoclave body of the inlet opening by described autoclave body rotates a plurality of paddles in the described autoclave body simultaneously;
E) fluid that is mixed with described sand grains that flows out from the liquid outlet channel of described sand control screen sample flows out from the liquid outlet of described autoclave body.
In preferred embodiment, between described step a and described step b, also comprise step a1: process top and the bottom of described sand control screen sample smooth smooth, the top of described sand control screen sample is sealed, its bottom end seal is fixed on the liquid outlet place of described autoclave body.
In preferred embodiment, also comprise step f after described step e: measure the maximum particle diameter of the sand grains that flows out from described autoclave body liquid outlet, this particle diameter is the sand control precision of described sand control screen sample.
In preferred embodiment, also comprising step f1 before the described step f: separate the sand grains in the fluid that is mixed with described sand grains that described autoclave body liquid outlet flows out, and the sand grains after separating is carried out drying process.
In preferred embodiment, described sand grains is spheric grain.
In preferred embodiment, a described paddle side shaft relative with described shunting webmaster is to being provided with the multi-disc blade, a described paddle side shaft relative with described sand control screen sample is to being provided with a plurality of hairbrush, and described hairbrush contacts with the outer wall of described sand control screen sample.
Characteristics and the advantage of sand control screen sand block accuracy detecting device of the present invention and detection method are:
One, sand control screen sand block accuracy detecting device of the present invention and detection method, adopt the spherical sand grains of mixing component and various criterion diameter dimension to test, effective guarantee the largest particles particle diameter by the sand control screen sample, it can reflect the wide or aperture of the maximum seam of sand control screen sample truely and accurately, also is the sand block precision of sand control screen; Simultaneously, this mixing component has been removed the sand grains that is blocked in sand control screen sample outside surface, has avoided sand grains in stowing operation because error and instability that filling extent brings have improved the repeated and stable of detection test result.
Two, sand control screen sand block accuracy detecting device of the present invention and detection method, use sand grains by the sand grains that adopts normal diameter size and shape as testing, removed because the test error that grit size and shape are brought, improved the stable and repeated of test result, those sand grains can reclaim and reuse, reduced testing cost, and test operation is simple.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, the accompanying drawing of required use was done to introduce simply during the below will describe embodiment, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the front view of sand control screen sand block accuracy detecting device of the present invention.
Fig. 2 is the side view of the telescopic connecting rod of sand control screen sand block accuracy detecting device of the present invention.
Fig. 3 is the front view of the sample top cover of sand control screen sand block accuracy detecting device of the present invention.
Fig. 4 is the front view of the sample base of sand control screen sand block accuracy detecting device of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Embodiment 1
As shown in Figure 1, the invention provides a kind of sand control screen sand block accuracy detecting device, it comprises autoclave body 1, shunting webmaster 2 and mixing component 3.Wherein: the upper end of autoclave body 1 is provided with and adds sand mouth 11, its lower end is provided with liquid outlet 12, offer a plurality of inlet openings 13 on the sidewall of described autoclave body 1, be equipped with sand control screen sample 4 in the described autoclave body 1, described sand control screen sample 4 has liquid outlet channel, and described liquid outlet channel is relative with described liquid outlet 12; Shunting webmaster 2 is positioned at described autoclave body 1, and is set in outside the described sand control screen sample 4, is formed with annular space 21 between described shunting webmaster 2 and the described sand control screen sample 4, is perfused with sand grains in the described annular space 21; Mixing component 3 is positioned at described autoclave body 1, and described mixing component 3 comprises a plurality of paddles 31, and described a plurality of paddles 31 are positioned at described annular space 21, and rotates in a circumferential direction around the periphery of described sand control screen sample 4.
Specifically, autoclave body 1 is cylindrical tube shape substantially, its upper end is provided with upper end cover 14, its lower end is provided with bottom end cover 15, add sand mouth 11 and be opened on the upper end cover 14, liquid outlet 12 is opened in the middle part of bottom end cover 15, in the present invention, liquid outlet 12 tapered funnel-forms are conducive to the outflow of liquid and sand grains like this.The barrel middle part of autoclave body 1 offers a plurality of inlet openings 13 in the circumferential direction of the circle, in the present invention, evenly offers in the circumferential direction of the circle four inlet openings 13 on the barrel of autoclave body 1, to guarantee that liquid can inject in the autoclave body 1 equably.
Shunting webmaster 2 is cylindrical tube shape substantially, its be nested in the autoclave body 1 and with the axis coaxle setting of autoclave body 1, the external diameter of shunting webmaster 2 is slightly less than the internal diameter of autoclave body 1, it highly is slightly less than the barrel height of autoclave body 1, and the top and bottom of shunting webmaster 2 are sticked by upper end cover 14, bottom end cover 15 sealings of a packing washer 22 with autoclave body 1 respectively.In the present invention, shunting webmaster 2 is comprised of parent tube 23 and metal net 24, and metal net 24 is wrapped in the outside of parent tube 23, and parent tube 23 is a metallic cylinder that is evenly arranged a plurality of circular holes, and it mainly works to support fixing metal mesh grid 24.From the liquid that a plurality of inlet openings 13 of autoclave body 1 inject, a plurality of circular holes after metal net 24 filters on parent tube 23 flow in the shunting webmasters 2.
Sand control screen sample 4 is nested in the shunting webmaster 2, the dead in line of its axis and autoclave body 1, be filled with sand grains in the annular space 21 that forms between sand control screen sample 4 and the shunting webmaster 2, in the present invention, those sand grains are spheric grain, those spheric grain can be glass microballoons, its particle size range is 0.02mm～1.6mm, use sand grains by the sand grains that adopts normal diameter size and shape as testing, removed because the test error that particle size and shape are brought has improved the stable and repeated of test result.
A plurality of paddles 31 of mixing component 3 stretch in the annular space 21 that forms between sand control screen sample 4 and the shunting webmaster 2, and those paddles 31 can be around the rotation of sand control screen sample 4 peripheries in this annular space 21, to stir the sand grains in this annular space 21.In the present invention, mixing component 3 is provided with four paddles 31, paddle 31 cylindrical shapes.
The process that the present invention detects sand control screen sample 4 sand block precision is as follows: at first, sand control screen sample 4 is put into autoclave body 1, put into afterwards shunting webmaster 2 and mixing component 3; At this moment, add sand mouth 11 to the annular space 21 interior perfusion sand grains between sand control screen sample 4 and the shunting webmaster 2 from what offer on autoclave body 1 upper end cover 14, sand grains is as the criterion with the top that did not have sand control screen sample 4; Afterwards, pass through ram pump, with inlet opening 13 filling liquids of constant flow from autoclave body 1, start mixing component 3, begin to stir, liquid is flowed through behind the shunting webmaster 2, with the sand grain fusion in the annular space 21, along with the continuous stirring of paddle 31, flow in a plurality of sand control sieve apertures 41 of the fluid-mixing of sand grains and liquid on sand control screen sample 4 in the liquid outlet channel of sand control screen sample 4, the liquid outlet on autoclave body 1 bottom end cover 15 12 flows out outside the autoclave body 1 afterwards.
Sand control screen sand block accuracy detecting device of the present invention, adopt the spherical sand grains of mixing component 3 and various criterion diameter dimension to carry out test experiments, effective guarantee the largest particles particle diameter by sand control screen sample 4, it can reflect the wide or aperture of the maximum seam of sand control screen sample 4 truely and accurately, also is the sand block precision of sand control screen; Simultaneously, this mixing component 3 has been removed the sand grains that is blocked in sand control screen sample 4 outside surfaces, has avoided sand grains in stowing operation because error and instability that filling extent brings have improved the repeated and stable of detection test result.In addition, the spherical sand grains of those normal diameter sizes can reclaim to be reused, and has reduced testing cost.Pick-up unit of the present invention, test operation is simple, the sand block precision of the detection sand control screen that it can be true and reliable, and good reproducibility.
According to an embodiment of the invention, the relative side shaft of described paddle 31 and described shunting webmaster 2 is to being provided with multi-disc blade 311, the relative side shaft of described paddle 31 and described sand control screen sample 4 is to being provided with a plurality of hairbrush 312, and described hairbrush 312 contacts with the outer wall of described sand control screen sample 4.
Specifically, multi-disc blade 311 is welded to connect to be shunted on the outside of webmaster 2 at paddle 31 relatively, on the inboard of paddle 31 relative sand control screen samples 4, equidistantly offer a vertical setting of types circular hole, in those circular holes, fill in hard fibre hairbrush 312, and be fixed in the circular hole by bonding agent.One end of those hard fibre hairbrush 312 contacts with the outside surface of sand control screen sample 4, and it is mainly used in removing the sand block on sand control screen sample 4 surfaces, for the sand block precision of accurately reacting sand control screen sample 4 provides premise.
According to an embodiment of the invention, described mixing component 3 also comprises a plurality of telescopic connecting rods 32, one end of described telescopic connecting rod 32 links to each other with the upper end of described paddle 31, its other end is connected with coupling lever 33, and the end that described coupling lever 33 passes described autoclave body 1 links to each other with a motor 34.
Specifically, as shown in Figure 2, telescopic connecting rod 32 is comprised of two sheet metals 321, offers a plurality of adjusting holes 322 on the described sheet metal 321, and described two sheet metals 321 wear to be connected in the adjusting hole different on described two sheet metals 321 322 by a connection piece 323 and link together.By a plurality of adjusting holes 322 of offering on the sheet metal 321, can suitably adjust two link positions between the sheet metal 321, thereby adjust the length scale after two sheet metals 321 connect, and then adjust distance between a plurality of paddles 31, to adapt to the sand control screen of different-diameter size, so that sand control screen sand block accuracy detecting device of the present invention can detect the sand control screen sample 4 of different specification size; In addition, this telescopic connecting rod 32 is gone back capable of regulating paddle 31 apart from the distance of sand control screen sample 4 outside surfaces, keep in touch so that be connected to the outer wall of a plurality of hairbrush 312 and sand control screen sample 4 on the paddle 31, with the sand block of effective removal sand control screen sample 4 outside surfaces.
The other end of telescopic connecting rod 32 links to each other with a motor 34 by a coupling lever 33, starter motor 34, motor 34 drives coupling lever 33 rotations, and then a plurality of telescopic connecting rods 32 that band is automatically connected on the coupling lever 33 reach paddle 31 rotations that link to each other with this telescopic connecting rod 32.
According to an embodiment of the invention, the sealing of the upper end of described sand control screen sample 4 is provided with sample top cover 42, and its lower end sealing is provided with sample base 43, and described sample base 43 links to each other with liquid outlet 12 sealings of described autoclave body 1.
Specifically, see also shown in Figure 3, sample top cover 42 comprises top 421 and is connected to the wall section 422 of 421 outer peripheral edges below, top, the inboard of wall section 422 is embedded with O-ring seal 423, sample top cover 42 is located at the upper end periphery of sand control screen sample 4 by sealing circle 423 gland bonnets, seal with the top to sand control screen sample 4, prevent in the test experience process, the fluid-mixing of sand grains and liquid flows in the liquid outlet channel of sand control screen sample 4 from the top of sand control screen sample 4, and affects the accuracy of sand control screen sample 4 test experience; As shown in Figure 4, the middle part of sample base 43 offers through hole 431, its lateral wall is formed with annular groove 432 and lower annular groove 433, and sand control screen sample 4 lower sat up straight and be located on this in annular groove 432, and the lower end sealing of the O-ring seal 434 that is embedded by upper annular groove 432 outsides and sand control screen sample 4 is sticked; The outside of lower annular groove 433 is embedded with O-ring seal 435, and this time annular groove 433 is fixed on the outer peripheral edges place of the liquid outlet 12 that autoclave body 1 bottom end cover 15 offers, and forms sealing states with the bottom end cover 15 with autoclave body 1.Flow out outside the autoclave bodies 1 from the through hole 431 of sample base 43, the liquid outlet 12 of autoclave body 1 from sand grains that the liquid outlet channel of sand control screen sample 4 flows out and the fluid-mixing of liquid.
According to an embodiment of the invention, the lower end of described autoclave body 1 is provided with support 5, and support 5 is comprised of three feets, and is fixed on the bottom end cover 15 of autoclave body 1, and it is used for supporting autoclave body 1.
Embodiment 2
See also shown in Fig. 1-4, the present invention also provides a kind of sand control screen sand block accuracy checking method that adopts above-mentioned sand control screen sand block accuracy detecting device to detect sand control screen sand block precision, and described sand control screen sand block accuracy checking method comprises the steps:
A) from one section sand control screen sample 4 of sand control screen cutting to be detected, described sand control screen sample 4 is put into the autoclave body 1 of described sand control screen sand block accuracy detecting device;
B) select sand grains, the particle size range of described sand grains is 0.02mm～1.6mm;
C) the described sand grains of the different-grain diameter size of select is mixed after, put into annular space 21 between the shunting webmaster 2 of described sand control screen sample 4 and described autoclave body 1 from the sand mouth 11 that adds of described autoclave body 1;
D) inlet opening 13 that passes through described autoclave body 1 rotates a plurality of paddles 31 in the described autoclave body 1 simultaneously to described autoclave body 1 interior filling liquid;
E) fluid that is mixed with described sand grains that flows out from the liquid outlet channel of described sand control screen sample 4 flows out from the liquid outlet 12 of described autoclave body 1.
Specifically, structure, principle of work and the beneficial effect of the sand control screen sand block accuracy detecting device of present embodiment 2 is identical with the sand control screen sand block accuracy detecting device of embodiment 1, does not repeat them here.
In the present invention, in step a, the length of the one section sand control screen sample 4 that cuts from sand control screen to be detected is 30cm; In step b, those sand grains of selecting are spheric grain, those spheric grain can be glass microballoons, use sand grains by the sand grains that adopts normal diameter size and shape as testing, removed because the test error that grit size and shape are brought has improved the stable and repeated of test result.
Sand control screen sand block accuracy checking method of the present invention, adopt the spherical sand grains of mixing component 3 and various criterion diameter dimension to test, effective guarantee the largest particles particle diameter by sand control screen sample 4, it can reflect the wide or aperture of the maximum seam of sand control screen sample 4 truely and accurately, also is the sand block precision of sand control screen; Simultaneously, this mixing component 3 has been removed the sand grains that is blocked in sand control screen sample 4 outside surfaces, has avoided sand grains in stowing operation because error and instability that filling extent brings have improved the repeated and stable of detection test result.In addition, the spherical sand grains of those normal diameter sizes can reclaim to be reused, and has reduced testing cost, detection method of the present invention, and test operation is simple, the sand block precision of the detection sand control screen that it can be true and reliable, and good reproducibility.
According to an embodiment of the invention, between described step a and step b, also comprise step a1: process top and the bottom of described sand control screen sample 4 smooth smooth, the top of described sand control screen sample 4 is sealed, its bottom end seal is fixed on liquid outlet 12 places of described autoclave body 1.The benefit that arranges like this is, top and bottom to sand control screen sample 4 seal, prevent in the process that detects test, the fluid-mixing of sand grains and liquid flows in the liquid outlet channel of sand control screen sample 4 from top or the bottom of sand control screen sample 4, and affects the accuracy of sand control screen sample 4 test experience.
According to an embodiment of the invention, also comprise step f after described step e: measure the maximum particle diameter of the sand grains that flows out from described autoclave body 1 liquid outlet 12, this particle diameter is the sand control precision of sand control screen sample.
Further, also comprising step f1 before the described step f: separate the sand grains in the fluid that is mixed with described sand grains that described autoclave body 1 liquid outlet 12 flows out, and the sand grains after separating is carried out drying process, with the accuracy of the sand grains diameter that guarantees to measure, raising experimental precision.
According to an embodiment of the invention, the relative side shaft of described paddle 31 and described shunting webmaster 2 is to being provided with multi-disc blade 311, the relative side shaft of described paddle 31 and described sand control screen sample 4 is to being provided with a plurality of hairbrush 312, and described hairbrush 312 contacts with the outer wall of described sand control screen sample 4.
Specifically, multi-disc blade 311 is welded to connect to be shunted on the outside of webmaster 2 at paddle 31 relatively, on the inboard of paddle 31 relative sand control screen samples 4, equidistantly offer a vertical setting of types circular hole, in those circular holes, fill in hard fibre hairbrush 312, and be fixed in the circular hole by bonding agent.One end of those hard fibre hairbrush 312 contacts with the outside surface of sand control screen sample 4, and it is mainly used in removing the sand block on sand control screen sample 4 surfaces, for the sand block precision of accurately reacting sand control screen sample 4 provides premise.
The above only is several embodiments of the present invention, and those skilled in the art can carry out various changes or modification to the embodiment of the invention according to the disclosed content of application documents and not break away from the spirit and scope of the present invention.
Claims (16)
1. a sand control screen sand block accuracy detecting device is characterized in that, described sand control screen sand block accuracy detecting device comprises:
Autoclave body, its upper end is provided with and adds the sand mouth, and its lower end is provided with liquid outlet, offer a plurality of inlet openings on the sidewall of described autoclave body, be equipped with the sand control screen sample in the described autoclave body, described sand control screen sample has liquid outlet channel, and described liquid outlet channel is relative with described liquid outlet;
The shunting webmaster, it is positioned at described autoclave body, and is set in outside the described sand control screen sample, is formed with annular space between described shunting webmaster and the described sand control screen sample, is perfused with sand grains in the described annular space;
Mixing component, it is positioned at described autoclave body, and described mixing component comprises a plurality of paddles, and described a plurality of paddles are positioned at described annular space, and rotate in a circumferential direction around the periphery of described sand control screen sample.
2. sand control screen sand block accuracy detecting device as claimed in claim 1, it is characterized in that, a described paddle side shaft relative with described shunting webmaster is to being provided with the multi-disc blade, a described paddle side shaft relative with described sand control screen sample is to being provided with a plurality of hairbrush, and described hairbrush contacts with the outer wall of described sand control screen sample.
3. sand control screen sand block accuracy detecting device as claimed in claim 1, it is characterized in that, described mixing component also comprises a plurality of telescopic connecting rods, one end of described telescopic connecting rod links to each other with the upper end of described paddle, its other end is connected with coupling lever, and the end that described coupling lever passes described autoclave body links to each other with a motor.
4. sand control screen sand block accuracy detecting device as claimed in claim 3, it is characterized in that, described telescopic connecting rod is comprised of two sheet metals, offer a plurality of adjusting holes on the described sheet metal, described two sheet metals wear to be connected in the adjusting holes different on described two sheet metals by a connection piece and link together.
5. sand control screen sand block accuracy detecting device as claimed in claim 1 is characterized in that, described shunting net pipe has parent tube and metal net, and described metal net is wrapped in the outside of described parent tube.
6. sand control screen sand block accuracy detecting device as claimed in claim 1 is characterized in that, the top and bottom of described shunting webmaster contact with the top and bottom sealing of described autoclave body by packing washer respectively.
7. sand control screen sand block accuracy detecting device as claimed in claim 1, it is characterized in that, the upper end sealing of described sand control screen sample is provided with the sample top cover, and its lower end sealing is provided with the sample base, and described sample base links to each other with the liquid outlet sealing of described autoclave body.
8. sand control screen sand block accuracy detecting device as claimed in claim 1 is characterized in that, the tapered funnel-form of the liquid outlet of described autoclave body.
9. sand control screen sand block accuracy detecting device as claimed in claim 1 is characterized in that, described sand grains is spheric grain, and its particle size range is 0.02mm～1.6mm.
10. sand control screen sand block accuracy detecting device as claimed in claim 1 is characterized in that, the lower end of described autoclave body is provided with support.
11. each described sand control screen sand block accuracy detecting device detects the sand control screen sand block accuracy checking method of sand control screen sand block precision in an employing such as the claim 1～10, it is characterized in that, described sand control screen sand block accuracy checking method comprises the steps:
A) from one section sand control screen sample of sand control screen cutting to be detected, described sand control screen sample is put into the autoclave body of described sand control screen sand block accuracy detecting device;
B) select sand grains, the particle size range of described sand grains is 0.02mm～1.6mm;
C) the described sand grains of the different-grain diameter size of select is mixed after, put into annular space between the shunting webmaster of described sand control screen sample and described autoclave body from the sand mouth that adds of described autoclave body;
D) filling liquid in the described autoclave body of the inlet opening by described autoclave body rotates a plurality of paddles in the described autoclave body simultaneously;
E) fluid that is mixed with described sand grains that flows out from the liquid outlet channel of described sand control screen sample flows out from the liquid outlet of described autoclave body.
12. sand control screen sand block accuracy checking method as claimed in claim 11, it is characterized in that, between described step a and described step b, also comprise step a1: process top and the bottom of described sand control screen sample smooth smooth, the top of described sand control screen sample is sealed, its bottom end seal is fixed on the liquid outlet place of described autoclave body.
13. sand control screen sand block accuracy checking method as claimed in claim 11, it is characterized in that, also comprise step f after described step e: measure the maximum particle diameter of the sand grains that flows out from described autoclave body liquid outlet, this particle diameter is the sand control precision of described sand control screen sample.
14. sand control screen sand block accuracy checking method as claimed in claim 13, it is characterized in that, also comprising step f1 before the described step f: separate the sand grains in the fluid that is mixed with described sand grains that described autoclave body liquid outlet flows out, and the sand grains after separating is carried out drying process.
15. sand control screen sand block accuracy checking method as claimed in claim 11 is characterized in that described sand grains is spheric grain.
16. sand control screen sand block accuracy checking method as claimed in claim 11, it is characterized in that, a described paddle side shaft relative with described shunting webmaster is to being provided with the multi-disc blade, a described paddle side shaft relative with described sand control screen sample is to being provided with a plurality of hairbrush, and described hairbrush contacts with the outer wall of described sand control screen sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210567785.1A CN103063422B (en) | 2012-12-24 | 2012-12-24 | Sand control screen sand block accuracy detecting device and detection method |
Applications Claiming Priority (1)
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| CN103900806A (en) * | 2014-03-31 | 2014-07-02 | 中国石油天然气股份有限公司 | Anti-clogging ability evaluation test device and method for sand-control screen pipe |
| CN104179482A (en) * | 2014-08-11 | 2014-12-03 | 北京科技大学 | Sand blocking performance experiment device for oil gas sand control screen pipe at high temperature and high pressure |
| CN106596312A (en) * | 2016-12-05 | 2017-04-26 | 中国石油天然气股份有限公司 | Prediction method for erosion life of sand control screen pipe in perforation completion gas well |
| CN106761592A (en) * | 2017-01-13 | 2017-05-31 | 西南石油大学 | A kind of adjustable compound sand-prevention screen pipe of precision |
| CN107100596A (en) * | 2017-06-28 | 2017-08-29 | 长江大学 | A kind of gravel preliminary filling action of gravel pack sandscreen |
| CN114809996A (en) * | 2022-04-27 | 2022-07-29 | 西南石油大学 | Sand prevention device for ocean hydrate production |
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