CN211318127U - Sieve tube high temperature keeps off sand performance experimental apparatus - Google Patents
Sieve tube high temperature keeps off sand performance experimental apparatus Download PDFInfo
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- CN211318127U CN211318127U CN201921770916.XU CN201921770916U CN211318127U CN 211318127 U CN211318127 U CN 211318127U CN 201921770916 U CN201921770916 U CN 201921770916U CN 211318127 U CN211318127 U CN 211318127U
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Abstract
A high-temperature sand blocking performance experiment device for a sieve tube is suitable for sand blocking performance experiments of sieve tubes with different pressure differences under the high-temperature condition. This device is by relief valve I, inlet I, admission valve, air inlet, temperature sensor I, heating tape I, middle container, the liquid outlet, the support collects the container, control flap, the sand outlet, fills up the sand pipe lower cover, the screen pipe sample, relief valve II, pressure transmitter, the experiment sand, temperature sensor II, heating tape II, fills up the sand pipe upper cover, inlet II constitutes. The device has the advantages that the influence of different pressure differences on the sand blocking performance of the sieve tube filter body under the high-temperature condition can be realized, and the stability of the experiment pressure difference is realized through the pressure control valve or the frequent opening/closing valve in the experiment process. The sand blocking performance of the sieve tube under different pressure differences at high temperature is evaluated through performance indexes such as sand production quality, median particle size d50, sand content of the sieve tube filter accuracy or larger than or equal to the sieve tube filter ratio and the like.
Description
Technical Field
The invention relates to the field of sand blocking performance of sieve tubes, in particular to an experimental device for the sand blocking performance of the sieve tubes, and particularly relates to an experimental device for the high-temperature sand blocking performance of sand-proof sieve tubes.
Background
In loose sandstone oil reservoirs, filtration and sand prevention are the crucial links in oil exploitation. At present, about 80% of sand producing wells all over the world adopt a mechanical sand control mode to realize the effects on oil and gas field production which are reduced to the maximum extent while preventing or delaying sand migration. The sand control screen pipe is one of the core components of the mechanical sand control technology, is arranged at the lowest end of a seamless or welded steel well pipe of an oil well to realize the separation of the extracted liquid and sand and stones in the stratum, and has great influence on the sand control effect, the cost, the yield of the oil well and the like. At present, the screen pipe is subjected to the action of internal and external loads in the well completion process and the production process of an oil well, if the periphery or the inside of the screen pipe is blocked, the pressure of a well hole is increased, the screen pipe can be crushed, the anti-extrusion strength of the screen pipe is related to the stability of a well wall and the continuity of the oil production process, and the pressure difference between the inside and the outside of the screen pipe has important influence on the sand blocking performance of the screen pipe. At present, the experimental device and the evaluation method for actually simulating the influence of the mining pressure difference on the sand blocking performance of the sieve tube in China are few, and the existing experimental device mainly relates to the normal-temperature pressure difference sand blocking performance and is lack of the experimental device and the evaluation method for the high-temperature pressure difference sand blocking performance. The utility model provides a sand control screen pipe high temperature keeps off sand performance experimental apparatus.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an experimental apparatus for screen pipe high temperature keeps off sand performance. The experimental device for the high-temperature differential pressure sand blocking performance is provided for researching the change rule and the evaluation method of the sand blocking performance of the sand control screen pipe under different high-temperature differential pressures.
The application provides a screen pipe high temperature keeps off sand performance experimental apparatus, including pressurization portion, experiment portion and collection portion, optionally, the device comprises pressurization portion, experiment portion and collection portion.
The pressurizing part comprises a hollow middle container and a heating belt I, and optionally, the pressurizing part consists of the middle container and the heating belt I;
the experimental part comprises a hollow sand filling pipe, a sand filling pipe upper cover provided with a liquid inlet II, a sand filling pipe lower cover provided with a through opening, a pressure transmitter, a sieve pipe sample, experimental sand and a heating belt II, and optionally, the experimental part consists of the components;
the collecting part comprises a hollow collecting container and a sand outlet, and optionally, the collecting part consists of the collecting container and the sand outlet;
the middle container is communicated with a liquid inlet II of the sand filling pipe through a pipeline and an upper cover of the sand filling pipe; the sieve tube sample is arranged at the lower end of the sand filling tube, and the outer side of the sieve tube sample is also provided with a lower cover of the sand filling tube connected with the lower end of the sand filling tube; the experimental sand is placed in a space formed by the sand filling pipe and the sieve pipe sample; the pressure transmitter extends into the sand filling pipe through the sand filling pipe shell; the upper end of the sand outlet is communicated with the sand filling pipe through a lower cover of the sand filling pipe, and the lower end of the sand outlet extends into the collecting container; the collection container is used to collect and filter out the solution containing the experimental sand.
The sand filling pipe upper cover is connected with the sand filling pipe through threads, and the other part of solution of the experiment can be added into the sand filling pipe after the sand filling pipe upper cover is unscrewed.
The heating belt I surrounds the middle container and the outer wall of the pipeline connecting the middle container and the sand filling pipe;
the heating belt II surrounds the outer wall of the sand filling pipe.
In the experimental apparatus provided by the present invention, optionally, the pressurizing part further includes a safety valve I, a liquid inlet I, an air inlet valve, an air inlet, a temperature sensor I, and a liquid outlet;
in the experimental device provided by the utility model, optionally, the safety valve I is communicated with the intermediate container through a threaded connection, so as to ensure the safe operation of the intermediate container;
in the experimental device provided by the utility model, optionally, the liquid inlet I is communicated with the intermediate container through a joint; for adding the majority of the experimental solution;
in the experimental device provided by the utility model, optionally, one end of the air inlet is communicated with an air source, and the other end is communicated with the intermediate container through a pipeline and an air inlet valve; the gas source is high-pressure nitrogen, and the air inlet valve can control the high-pressure gas source to flow into the intermediate container;
in the experimental apparatus provided by the present invention, optionally, the temperature sensor I is connected to the outer shell of the intermediate container through a joint, and extends into the intermediate container; used for detecting the temperature of the experimental solution in the intermediate container;
the utility model provides an among the experimental apparatus, optionally, liquid in the intermediate container flows out through the liquid outlet.
In the experimental device provided by the utility model, optionally, the experimental part further comprises a temperature sensor II, a safety valve II and a bracket;
in the experimental device provided by the utility model, optionally, the temperature sensor II is connected to the shell of the sand-filling pipe through a joint and extends into the sand-filling pipe; the device is used for detecting the temperature inside the sand-packed pipe;
in the experimental device provided by the utility model, optionally, the safety valve II and the pressure transmitter are communicated with the sand filling pipe through a tee joint;
the utility model provides an among the experimental apparatus, optionally, the sand pack is supported to the support, optionally, the support sets up to the support that can make the sand pack overturn from top to bottom. When the lower cover of the sand filling pipe is unscrewed, experimental sand and a sieve pipe sample can be added;
in the experimental apparatus provided by the present invention, optionally, the collecting part further comprises a control valve;
the utility model provides an among the experimental apparatus, optionally, control flap connects at the sand pack pipe lower cover lower extreme, and the sand pack pipe lower cover passes through control flap intercommunication with the sand outlet, can tightly fix the screen pipe sample in the sand pack pipe through screwing up the sand pack pipe lower cover.
The utility model provides an among the experimental apparatus, optionally, the air supply is high-pressure nitrogen gas source.
The device has the advantages that the intermediate container and the sand filling pipe are heated simultaneously, the influence of different pressure differences on the sand blocking performance of the sieve tube filter body under the high-temperature condition can be realized, and the stability of the experiment pressure difference is realized by controlling the opening and closing of the valve. And moreover, the experimental parameters are close to the practical application environment, the high-temperature sand blocking performance of the sieve tubes in different types and different corrosion states can be evaluated and compared, and finally, the performance indexes provided by the experiment can provide quantitative indexes for the sand blocking performance of the sand control sieve tubes and provide scientific basis and technical support for the use of the on-site sand control sieve tubes.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. Other advantages of the application may be realized and attained by the instrumentalities and combinations particularly pointed out in the specification, drawings, and claims.
Drawings
The accompanying drawings are included to provide an understanding of the present disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the examples serve to explain the principles of the disclosure and not to limit the disclosure.
FIG. 1 is a schematic view of the apparatus of the present invention;
reference numerals: 1. safety valve I, 2, inlet I, 3, admission valve, 4, air inlet, 5, temperature sensor I, 6, middle container, 7, heating zone I, 8, liquid outlet, 9, support, 10, collecting container, 11, control valve, 12, sand outlet, 13, sand filling pipe lower cover, 14, screen pipe sample, 15, safety valve II, 16, pressure transmitter, 17, experimental sand, 18, temperature sensor II, 19, sand filling pipe, 20, heating zone II, 21, sand filling pipe upper cover, 22, inlet II.
FIG. 2 is a schematic diagram of the particle size distribution curve of the filtered sand particles when the experimental temperature is 120 ℃ and the differential pressure is 1 MPa.
Detailed Description
The technical solution of the present invention will be further explained by taking the composite screen pipe as an example and combining with the attached drawings through the specific implementation manner. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention.
As shown in fig. 1, the experimental device for high-temperature differential pressure sand blocking performance comprises a safety valve I1, a liquid inlet I2, an air inlet valve 3, an air inlet 4, a temperature sensor I5, an intermediate container 6, a heating belt I7, a liquid outlet 8, a support 9, a collecting container 10, a control valve 11, a sand outlet 12, a sand filling pipe lower cover 13, a sieve pipe sample 14, a safety valve II 15, a pressure transmitter 16, experimental sand 17, a temperature sensor II 18, a sand filling pipe 19, a heating belt II 20, a sand filling pipe upper cover 21 and a liquid inlet II 22. The safety valve I1 is connected on the middle container 6 through screw thread to ensure the safe operation of the middle container 6, the liquid inlet I2 is connected on the middle container 6 through joint, most solution of experiment can be added, the air inlet 4 is connected with the high-pressure nitrogen gas bottle and is controlled by the air inlet valve 3, the temperature sensor I5 is connected on the middle container 6 through joint to control the temperature of the experiment solution in the middle container 6, the heating belt I7 is enclosed on the outer wall of the pipeline between the outer wall of the middle container 6 and the sand filling pipe 19 and the middle container 6, the liquid outlet 8 is connected on the upper cover 21 of the sand filling pipe through the liquid inlet II 22, the upper cover 21 of the sand filling pipe is connected with the sand filling pipe 19 through screw thread, the other part of solution of experiment can be added into the sand filling pipe 19 after being unscrewed, the heating belt II 20 is enclosed on the outer wall of the sand filling pipe 19 to heat, the pressure transmitter 16 and the safety valve II 15 are connected with a sand filling pipe 19 through a three-way joint, the support 9 can support the sand filling pipe 17 and enable the sand filling pipe 19 to turn over up and down, the lower cover 13 of the sand filling pipe is connected with the sand filling pipe 19 through threads, the lower cover 13 of the sand filling pipe can be unscrewed to add experimental sand 17 and a sieve pipe sample 14, the sieve pipe sample 14 can be tightly fixed in the sand filling pipe by screwing the lower cover, the control valve 11 is connected to the lower end of the lower cover 13 of the sand filling pipe, the lower end of the sand outlet 12 extends into the collecting container 10, and the collecting container 10 is placed at the lowest end of the sand filling pipe 19 and used for collecting filtered solution containing experimental sand.
Example 1
Carry out high temperature differential pressure through above-mentioned device and keep off sand performance experiment and include: preparing a sample, performing a high-temperature differential pressure experiment and evaluating the sand blocking performance.
i. Sample preparation
The composite sieve tube consists of an outer protective sleeve, a metal mesh, a drainage net, an inner protective sleeve and a wire winding. The screen samples 14 were processed into discs and the outer jacket was removed prior to the experiment. Due to the uneven surface of the outer sheath, sand grains flow out of the edge gap and are mixed into the filtered sand sample, so that the experimental result is inaccurate. The composite sieve tube is paved with six layers, and the thickness of the composite sieve tube is the same as the actual production thickness. The metal mesh cloth is the first layer of the experiment sieve tube sample 14, and the edge of the first layer of metal mesh cloth is tightly wound by the raw material belt, so that sand is prevented from passing through the edge.
High temperature differential pressure experiment
1) Putting the sieve tube sample 14 into a sand filling tube 19 and then filling the sand filling tube with a certain mass m0The test sand of (2) is added into the sand-packed pipe 19 and the intermediate container 6The test solution (deionized water to avoid the effect of inorganic salts in the solution on the sampling of the filtered sand) is heated simultaneously with the sand pack 19 and the intermediate container 6;
2) when the sand filling pipe 19 and the intermediate container 6 are heated to a preset temperature, introducing nitrogen, and after the heated experimental solution enters the sand filling pipe 19 from the intermediate container 6, slowly adjusting the pressure source to enable the sieve pipe sample 14 to reach a preset pressure;
3) after a certain period of time, opening the control valve 11 to enable the sand-doped experimental solution to enter the collecting container 10, and after the pressure is reduced to normal pressure, rapidly closing the control valve 11 and recording the interval time of valve opening and closing;
4) repeating the step 3 after the pressure of the screen pipe sample 14 part is increased back to the preset pressure and the temperature reaches the preset temperature until the experimental solution in the intermediate container 6 and the sand filling pipe 19 is completely discharged;
5) after the experimental solution is completely extruded, closing the control valve 11 and recording the whole experimental time t (namely the accumulated time of the opening and closing intervals of the control valve 11);
6) putting the collected water-sand mixed solution on a heating furnace, heating and evaporating to dryness, collecting sand passing through after filtration, weighing the mass of sand grains after water evaporation to dryness, and marking the mass as mt；
7) The sand collected after filtration was analyzed.
iii sand-blocking performance evaluation method
The experimental evaluation indexes include flow rate and sand production quality, median particle size d50, sand content and filtration ratio beta of the particle size greater than or equal to the filtration accuracy of the screen pipe sample 14:
a) flow rate: the ratio of the volume V of the test solution to the test time t for which the test solution is completely pressed out; sand production quality: mass m of sand collected after experimentt(g)；
b) Median particle size d50(μm): the corresponding sand grain size with the accumulated volume percentage of 50 percent in the sand grain size distribution curve after the experiment;
c) sand content with particle size greater than or equal to the filtration accuracy of the screen sample 14: after the experiment, the particle size in the sand particle size distribution curve is larger than or equal to the cumulative percentage corresponding to the filtering precision of the sieve tube sample 14;
d) filtration ratio β sand mass m collected after experimentt(g) Mass m of sand grains for experiment0(g) The ratio of.
FIG. 2 is a particle size distribution curve of a composite sieve tube filtered sand sample at a temperature of 120 ℃ and a pressure difference of 1 MPa. Where the abscissa is the grit size (μm) and the ordinate is the cumulative volume percent (%), wherein the screen sample 14 has a filtration accuracy Ds of 125 μm. As shown in fig. 2, the median particle size d50 is 72.6 μm, and the sand content is 22.85% with a particle size greater than or equal to the filter fineness Ds of the screen sample 14.
The utility model provides an experimental apparatus is the same with the practical application environment through setting up experimental parameter, provides quantitative index for sand control screen pipe's fender sand performance, provides scientific foundation and technical support to the use of on-the-spot sand control screen pipe.
The embodiments described herein are exemplary rather than limiting and it will be apparent to those of ordinary skill in the art that many more embodiments and implementations are possible within the scope of the embodiments described herein. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are possible. Any feature or element of any embodiment may be used in combination with or instead of any other feature or element in any other embodiment, unless expressly limited otherwise.
The present application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features and elements that have been disclosed in this application may also be combined with any conventional features or elements to form a unique utility model solution as defined by the claims. Any feature or element of any embodiment may also be combined with features or elements from other embodiments to form another unique embodiment as defined by the claims. Thus, it should be understood that any of the features shown and/or discussed in this application may be implemented alone or in any suitable combination. Accordingly, the embodiments are not limited except as by the appended claims and their equivalents. Furthermore, various modifications and changes may be made within the scope of the appended claims.
Further, in describing representative embodiments, the specification may have presented the method and/or process as a particular sequence of steps. However, to the extent that the method or process does not rely on the particular order of steps set forth herein, the method or process should not be limited to the particular sequence of steps described. Other orders of steps are possible as will be understood by those of ordinary skill in the art. Therefore, the particular order of the steps set forth in the specification should not be construed as limitations on the claims. Further, the claims directed to the method and/or process should not be limited to the performance of their steps in the order written, and one skilled in the art can readily appreciate that the sequences may be varied and still remain within the spirit and scope of the embodiments of the present application.
Claims (10)
1. The experimental device for the high-temperature sand blocking performance of the sieve tube is characterized by comprising a pressurizing part, an experimental part and a collecting part,
the pressurizing part comprises a hollow middle container and a heating belt I;
the experimental part comprises a hollow sand filling pipe, a sand filling pipe upper cover provided with a liquid inlet II, a sand filling pipe lower cover provided with a through opening, a pressure transmitter, a sieve pipe sample, experimental sand and a heating belt II;
the collecting part comprises a hollow collecting container and a sand outlet;
the middle container is communicated with a liquid inlet II of the sand filling pipe through a pipeline and an upper cover of the sand filling pipe; the sieve tube sample is arranged at the lower end of the sand filling tube, and the outer side of the sieve tube sample is also provided with a lower cover of the sand filling tube connected with the lower end of the sand filling tube; the experimental sand is placed in a space formed by the sand filling pipe and the sieve pipe sample; the pressure transmitter extends into the sand filling pipe through the sand filling pipe shell; the upper end of the sand outlet is communicated with the sand filling pipe through a lower cover of the sand filling pipe, and the lower end of the sand outlet extends into the collecting container;
the heating belt I surrounds the middle container and the outer wall of the pipeline connecting the middle container and the sand filling pipe;
the heating belt II surrounds the outer wall of the sand filling pipe.
2. The experimental device for the high-temperature sand blocking performance of the sieve tube according to claim 1, wherein the pressurizing part further comprises a safety valve I;
the safety valve I is communicated with the middle container through threaded connection.
3. The experimental device for the high-temperature sand blocking performance of the sieve tube according to claim 1, wherein the pressurizing part further comprises a liquid inlet I and a liquid outlet;
the liquid inlet I is communicated with the intermediate container through a joint; the liquid in the intermediate container flows out through the liquid outlet.
4. The experimental device for the high-temperature sand blocking performance of the sieve tube according to claim 1, wherein the pressurizing part further comprises an air inlet valve and an air inlet;
one end of the air inlet is communicated with an air source, and the other end of the air inlet is communicated with the middle container through a pipeline and an air inlet valve.
5. The experimental device for the high-temperature sand blocking performance of the sieve tube according to claim 1, wherein the pressurizing part further comprises a temperature sensor I;
the temperature sensor I is connected to the shell of the intermediate container through a joint and extends into the intermediate container.
6. The screen pipe high-temperature sand blocking performance experiment device as claimed in any one of claims 1 to 5, wherein the experiment part further comprises a temperature sensor II;
and the temperature sensor II is connected to the shell of the sand filling pipe through a joint and extends into the sand filling pipe.
7. The screen pipe high temperature sand blocking performance experimental device of any one of claims 1 to 5, wherein the experimental part further comprises a safety valve II, and the safety valve II and the pressure transmitter are communicated with the sand filling pipe through a tee joint.
8. The screen pipe high temperature sand blocking performance experiment device of any one of claims 1 to 5, wherein the experiment part further comprises a bracket, the bracket supports the sand-filled pipe, and optionally, the bracket is arranged to enable the sand-filled pipe to be turned upside down.
9. The experimental device for the high-temperature sand blocking performance of the sieve tube as recited in any one of claims 1 to 5, wherein the collecting part further comprises a control valve, the control valve is connected to the lower end of the lower cover of the sand filling pipe, and the lower cover of the sand filling pipe is communicated with the sand outlet through the control valve.
10. The experimental device for the high-temperature sand blocking performance of the sieve tube according to claim 4, wherein the gas source is a high-pressure nitrogen gas source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921770916.XU CN211318127U (en) | 2019-10-21 | 2019-10-21 | Sieve tube high temperature keeps off sand performance experimental apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921770916.XU CN211318127U (en) | 2019-10-21 | 2019-10-21 | Sieve tube high temperature keeps off sand performance experimental apparatus |
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| CN211318127U true CN211318127U (en) | 2020-08-21 |
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| CN201921770916.XU Active CN211318127U (en) | 2019-10-21 | 2019-10-21 | Sieve tube high temperature keeps off sand performance experimental apparatus |
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- 2019-10-21 CN CN201921770916.XU patent/CN211318127U/en active Active
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