CN101270640A - Miniature gravel filling simulation device - Google Patents
Miniature gravel filling simulation device Download PDFInfo
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- CN101270640A CN101270640A CNA2008101057321A CN200810105732A CN101270640A CN 101270640 A CN101270640 A CN 101270640A CN A2008101057321 A CNA2008101057321 A CN A2008101057321A CN 200810105732 A CN200810105732 A CN 200810105732A CN 101270640 A CN101270640 A CN 101270640A
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- gravel
- pipe
- miniature
- oil pipe
- sleeve pipe
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Abstract
The invention discloses a micro gravel packing simulator, which belongs to the field of well pacing. The simulator comprises a visible casing, an oil pipe installed in the visible casing, a fluid injection tube fixed on the underside of the visible casing and connected with the visible casing, a filter layer and a precision pressure gauge and a pressure control valve that are installed on the wall of the fluid injection tube. The micro gravel packing simulator provided by the invention can be used for filling the gravel in the visible casing and then fluid is injected into the visible casing. The different packing results of the gravel can be measured by measuring the outflow from the oil pipe in unit time. The micro gravel packing simulator can be used to measure the packing performance of the different gravel correctly and directly. In addition, the micro gravel packing simulator is easy to be used, has low cost and offers reliable reference for choosing the proper gravel for packing under different oil extraction conditions.
Description
Technical field
The present invention relates to oil well filling field, particularly a kind of miniature gravel filling simulation device.
Background technology
Existing oil wells in field utilizes high-pressure pump that load fluid and pack gravel mixture are injected the stratum usually, to improve the cleanliness of the crude oil of being adopted.But in stowing operation, especially in the filling of horizontal well, there are a lot of problems: at first, can not observe gravel filling effect intuitively, can't calculate the degree of packing and the pack effectiveness of gravel pack; Secondly, fluid is taken the situation of sand in the unpredictable stowing operation, it is concrete and gross data is not as foundation reliably to be equipped with the gravel of which kind of specification for the screen casing of different size, and dependence experience is merely simply judged, therefore can't scientifically instruct actual production.
Summary of the invention
For the filling effect of the gravel of measuring the heterogeneity proportioning, so the gravel of definite different size screen casing corresponding specification that should be equipped with, the invention provides a kind of miniature gravel filling simulation device, this device comprises: oil pipe, visual sleeve pipe and fluid ascending pipe; Oil pipe is sleeved in the visual sleeve pipe, and fixedlys connected with visual sleeve pipe; The fluid ascending pipe is arranged on visual sleeve pipe bottom;
Have the oil pipe inlet on the oil pipe tube wall; Fluid ascending pipe tube wall is provided with first precision pressure gauge; Between fluid ascending pipe and visual sleeve pipe, be provided with filtration beds.
Visual sleeve pipe is made by transparent material.
Also be provided with second precision pressure gauge and pressure-control valve on the fluid ascending pipe tube wall of miniature gravel filling simulation device of the present invention; Second precision pressure gauge is below first precision pressure gauge, and pressure-control valve is between first precision pressure gauge and second precision pressure gauge.
The visual cover tube wall of miniature gravel filling simulation device of the present invention is provided with the back-up sand mouth and is used to close the gag of described back-up sand mouth.
The visual sleeve bottom edge of miniature gravel filling simulation device of the present invention is equipped with sealing ring.
The filtration beds of miniature gravel filling simulation device of the present invention is a double-decker.
The visual sleeve pipe open top edge of miniature gravel filling simulation device of the present invention is provided with the ring-shaped sleeve convex edge; Edge of opening at the oil pipe top is provided with ring-type oil pipe convex edge; Visual sleeve pipe and oil pipe are fixing by sleeve pipe convex edge and the assembling of oil pipe convex edge.
The oil pipe of miniature gravel filling simulation device of the present invention is made by transparent material.
The beneficial effect of technical scheme provided by the invention is: use above miniature gravel filling simulation device, can observe the take sand situation of gravel in fluid of variety classes and heterogeneity proportioning intuitively, and can accurately draw out the flow resistance curve map of various gravels, thereby contrast the filling effect of the gravel of variety classes and heterogeneity proportioning; Simultaneously, use miniature gravel filling simulation device of the present invention to test, the gravel that can also should be equipped with which kind of specification for the sand control screen of different size in the production of recovering the oil provides reliable theoretical foundation; Miniature gravel filling simulation device cost of the present invention is low, and technology is simple, is not measured environmental limitations, is applicable to various oil recovery conditions.
Description of drawings
Fig. 1 is the whole sectional drawing of the miniature gravel filling simulation device that provides of the embodiment of the invention 1.
The specific embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.
Referring to Fig. 1, the miniature gravel filling simulation device that the embodiment of the invention provides comprises oil pipe 2, visual sleeve pipe 7 and fluid ascending pipe 4.Wherein, visual sleeve pipe 7 is cylindric, adopts transparent material to make, and for example organic glass, glass or transparent plastic etc. can be observed the state of gravels 8 and fluid in the visual sleeve pipe 7 so intuitively.Epimere at visual sleeve pipe 7 has back-up sand mouth 15, the size of back-up sand mouth 15 should guarantee gravel thus back-up sand mouth 15 successfully be received in the visual sleeve pipe 7.Back-up sand mouth 15 is furnished with the gag 6 that is complementary with it, after measurement finishes with gravel pack, and can be with gag 6 with 15 sealings of back-up sand mouth.The upper end of visual sleeve pipe 7 is bonded with circular sleeve pipe convex edge 12, is used for visual sleeve pipe 7 and oil pipe 2 assemblings fixing.
The bottom arrival end of visual sleeve pipe 7 is provided with filtration beds 9, prevents to miss in visual sleeve pipe 7 at stowing operation cobblestone 8.The area of filtration beds 9 is identical with interior section surface area of visual sleeve pipe 7.Filtration beds 9 can be arranged to two-layer, and wherein the upper strata mesh is bigger, and lower floor's mesh is less, and the concrete size of its mesh can be determined according to the specification of pack gravel.
Be set with oil pipe 2 in visual sleeve pipe 7, oil pipe 2 upper end open form oil pipe outlet 16, the lower tip sealing.The internal diameter of oil pipe 2 is about 1/3rd of visual sleeve pipe 7, and the length of oil pipe 2 can be determined according to practical measurement requirement, can be about 2/3rds of visual sleeve pipe 7.The tube wall of oil pipe 2 also can be made of transparent material, like this can be so that observe the situation of injecting fluid and fluid motion in the oil pipe 2.Oil pipe 2 tops are bonded with ring-type oil pipe convex edge 13, and the width of oil pipe convex edge 13 guarantees can be fixing with sleeve pipe convex edge 12 overlap joints and the assembling on visual sleeve pipe 7 tops.Oil pipe 2 is sleeved on the inside of visual sleeve pipe 7,, so just can link together visual sleeve pipe 7 and oil pipe 2 oil pipe convex edge 13 and sleeve pipe convex edge 12 positioning and fixing by fastening devices, and be the container of U-shaped also simultaneously at visual sleeve pipe 7 inner formation tangent planes.Have oil pipe inlet 1 on the epimere tube wall of oil pipe 2, fluid in the visual sleeve pipe 7 and gravel can flow in the oil pipe 2 by this oil pipe inlet 1.
On fluid ascending pipe 4 tube walls, pressure-control valve 5 is installed, can controls the pressure of the fluid that injects visual sleeve pipe 7 by pressure-control valve 5.Diverse location also is equipped with two precision pressure gauges on the tube wall of fluid ascending pipe 4.Wherein, second precision pressure gauge 11 is installed in pressure-control valve 5 lower ends, first precision pressure gauge 10 is installed in pressure-control valve 5 upper ends, by the fluid of external input equipment input second precision pressure gauge 11 of at first flowing through, measure the initial pressure of fluids according to second precision pressure gauge 11 after, can be by pressure-control valve 5 regulated fluid pressure, after this, through the fluid of pressure regulation first precision pressure gauge 10 of flowing through, measure the injection pressure of fluid after, final fluid is injected in the visual sleeve pipe 7.
Longshore current body ascending pipe 4 is provided with annular ascending pipe convex edge 14 with the excircle of the contact surface of visual sleeve pipe 7, and visual sleeve pipe 7 is fixed on this ascending pipe convex edge 14.In order to guarantee that 14 of visual sleeve pipe 7 and ascending pipe convex edges fluid do not take place ooze dew, visual sleeve pipe 7 lower end excircles also are provided with an O-ring seal 3 in 14 upper edges, ascending pipe convex edge.
Adopt above miniature gravel filling simulation device, can accurately measure the take sand situation of gravel in fluid, also can contrast the filling effect of gravel in oil well of variety classes and heterogeneity proportioning simultaneously.
Utilize device of the present invention to measure, at first load weighted gravel is inserted in the visual sleeve pipe from the back-up sand mouth of miniature gravel filling simulation device, start external fluid input equipment, allow fluid flow into the fluid ascending pipe, regulate pressure-control valve, increase the fluid injection pressure gradually, observe the motion state of gravel in fluid, continue to improve the injection pressure of fluid, measure simultaneously in certain period of time, fluid flows out the amount of oil pipe from the oil pipe outlet.In addition, in actual applications, the gravel that can also change other kind or have other composition proportion.Adopt device of the present invention, can measure the filling effect of different gravels.
Utilize miniature gravel filling simulation device of the present invention, can accurately draw out variety classes or have the flow resistance curve of the gravel of heterogeneity proportioning according to measurement result, thereby can intuitively contrast variety classes or have the filling effect of the gravel of heterogeneity proportioning, provide reliable foundation for selecting pack gravel in the actual oil producing operation process.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a miniature gravel filling simulation device is characterized in that, described device comprises oil pipe, visual sleeve pipe and fluid ascending pipe; Described oil pipe is sleeved in the described visual sleeve pipe, and fixedlys connected with described visual sleeve pipe; Described fluid ascending pipe is arranged on described visual sleeve pipe bottom;
On described oil pipe tube wall, have the oil pipe inlet; Described fluid ascending pipe tube wall is provided with first precision pressure gauge; Between described fluid ascending pipe and described visual sleeve pipe, be provided with filtration beds.
Described visual sleeve pipe is made by transparent material.
2. miniature gravel filling simulation device according to claim 1 is characterized in that, also is provided with second precision pressure gauge and pressure-control valve on the described fluid ascending pipe tube wall; Described second precision pressure gauge is below described first precision pressure gauge, and described pressure-control valve is between described first precision pressure gauge and described second precision pressure gauge.
3. miniature gravel filling simulation device according to claim 1 is characterized in that, described visual cover tube wall is provided with the back-up sand mouth and is used to close the gag of described back-up sand mouth.
4. miniature gravel filling simulation device according to claim 1 is characterized in that, at described visual sleeve bottom edge sealing ring is installed.
5. miniature gravel filling simulation device according to claim 1 is characterized in that, described filtration beds is a double-decker.
6. miniature gravel filling simulation device according to claim 1 is characterized in that, is provided with the ring-shaped sleeve convex edge at described visual sleeve pipe open top edge; Edge of opening at described oil pipe top is provided with ring-type oil pipe convex edge; Described visual sleeve pipe and described oil pipe are fixing by described sleeve pipe convex edge and the assembling of described oil pipe convex edge.
7. miniature gravel filling simulation device according to claim 1 is characterized in that described oil pipe is made by transparent material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101057321A CN101270640A (en) | 2008-04-30 | 2008-04-30 | Miniature gravel filling simulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101057321A CN101270640A (en) | 2008-04-30 | 2008-04-30 | Miniature gravel filling simulation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101270640A true CN101270640A (en) | 2008-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101057321A Pending CN101270640A (en) | 2008-04-30 | 2008-04-30 | Miniature gravel filling simulation device |
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| CN (1) | CN101270640A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106895940A (en) * | 2017-03-08 | 2017-06-27 | 中国石油天然气股份有限公司 | Compacting force snesor, gravel fill the measurement apparatus and method of compaction |
| CN107044273A (en) * | 2017-04-07 | 2017-08-15 | 中国石油大学(华东) | Sand control pit shaft blocks the integrated evaluation experimental analogue means of de-plugging and method |
| CN108035705A (en) * | 2017-11-30 | 2018-05-15 | 中国石油大学(北京) | A kind of experimental method for simulating loose sand oil accumulation sand block filter medium clogging |
-
2008
- 2008-04-30 CN CNA2008101057321A patent/CN101270640A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106895940A (en) * | 2017-03-08 | 2017-06-27 | 中国石油天然气股份有限公司 | Compacting force snesor, gravel fill the measurement apparatus and method of compaction |
| CN106895940B (en) * | 2017-03-08 | 2019-04-12 | 中国石油天然气股份有限公司 | It is compacted the measuring device and method of force snesor, gravel filling compaction |
| CN107044273A (en) * | 2017-04-07 | 2017-08-15 | 中国石油大学(华东) | Sand control pit shaft blocks the integrated evaluation experimental analogue means of de-plugging and method |
| US10697277B2 (en) | 2017-04-07 | 2020-06-30 | China University Of Petroleum (East China) | Simulation device and method for integrated evaluation experiment for sand control wellbore plugging and plugging removal |
| CN108035705A (en) * | 2017-11-30 | 2018-05-15 | 中国石油大学(北京) | A kind of experimental method for simulating loose sand oil accumulation sand block filter medium clogging |
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Open date: 20080924 |