CN102704913A - Experimental device and method for simulating exhaustion production of gas-containing thickened oil by utilizing tapered sand filling pipe - Google Patents
Experimental device and method for simulating exhaustion production of gas-containing thickened oil by utilizing tapered sand filling pipe Download PDFInfo
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- CN102704913A CN102704913A CN2012102037800A CN201210203780A CN102704913A CN 102704913 A CN102704913 A CN 102704913A CN 2012102037800 A CN2012102037800 A CN 2012102037800A CN 201210203780 A CN201210203780 A CN 201210203780A CN 102704913 A CN102704913 A CN 102704913A
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- fill out
- out sand
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- sand tube
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Abstract
The invention provides an experimental device and a method for simulating exhaustion production of gas-containing thickened oil by utilizing a tapered sand filling pipe. The experimental device comprises a tapered sand filling pipe, wherein the tapered sand filling pipe comprises a tapered pipe wall, a front cover and a back cover which are respectively arranged on both ends of the pipe wall, and a tapered or frustum-shaped cavity formed among the front cover, the back cover and the pipe wall, wherein an oil leakage hole is arranged in the front cover, and an oil replenishing hole is arranged in the back cover. According to the experimental method, a sand filling model is arranged in the tapered sand filling pipe. According to the invention, production conditions of actual oil storage can be simulated in a laboratory as much as possible, and effective ways and means are provided for actual exhaustion extraction of the gas-containing thickened oil.
Description
Technical field
The present invention relates to field of petroleum exploitation, in particular to a kind of depleted experimental facilities and method of producing of gassiness viscous crude of simulating, especially a kind of depleted experimental facilities and method of producing of taper fill out sand tube simulation gassiness viscous crude of utilizing.
Background technology
In the depleted recovery process of gassiness heavy crude reservoir, after pressure is reduced to bubble point pressure, owing to reasons such as viscosity of thickened oil are bigger; The gas of deviating from can not separate with crude oil at once, but is strapped in the crude oil with the form of a large amount of microbubbles, flows with crude oil; Form so-called " foam oil " stream; Produce and show as this period: production gas-oil ratio remains on relatively low level for a long time, and reservoir pressure descends slower, and output is higher; Along with the continuation decline of pressure, minute bubbles become greatly gradually in the crude oil, and begin relative crude oil motion; Bubble merges in the motion process; When reaching a certain pressure (plan bubble point pressure), form continuous gas flow, this stage produces and shows as: production gas-oil ratio increases; Oil production reduces, and reservoir pressure descends very fast.
The experimental facilities of the depleted recovery features of simulation gassiness viscous crude adopts cylindrical straight tube sandpack column at present; Variation and the pit shaft annex pressure that can not effectively simulate drainage area in the actual production well recovery process change, the variation of gas phase saturation and foam oil phenomenon etc. in the depleted manufacturing process of description gassiness viscous crude that in addition can not be vivid.
Summary of the invention
The present invention provides a kind of depleted experimental facilities and method of producing of taper fill out sand tube simulation gassiness viscous crude of utilizing; Owing to adopt cylindrical straight tube sandpack column, can not effectively simulate the variation of drainage area in the actual production well recovery process and the problem that pit shaft annex pressure changes to solve prior art.The present invention also solve prior art can not the depleted manufacturing process of description gassiness viscous crude of image in the problems such as variation and foam oil phenomenon of gas phase saturation.
For this reason; The present invention proposes a kind of depleted experimental facilities of producing of taper fill out sand tube simulation gassiness viscous crude that utilizes; Said experimental facilities comprises: the taper fill out sand tube, and said taper fill out sand tube comprises: the tube wall of taper, be separately positioned on the protecgulum and the bonnet at said tube wall two ends, form the cavity of taper or taper type between said protecgulum, bonnet and the said tube wall; Said protecgulum is provided with the draining hole, and said bonnet is provided with the repairing hole.
Further, said tube wall is processed by polyether-ether-ketone.
Further, be provided with sandpack column in the said taper fill out sand tube.
Further, said experimental facilities also comprises: to the CT machine of said taper fill out sand tube scanning.
Further, said experimental facilities also comprises: be arranged on the pressure sensor in the said sandpack column.
Further, said experimental facilities also comprises: the visible observation window that is arranged on draining hole one end of said taper fill out sand tube.
Further, said experimental facilities also comprises: to the camera head of said visible observation window shooting.
Further, the present invention also provides a kind of experimental technique, and said experimental technique is provided with sandpack column in the taper fill out sand tube.
Further, said experimental technique is observed the formation of gas phase in the sandpack column and the distribution situation of saturation ratio through CT scan.
Further, said experimental technique utilizes visible observation window and camera head to observe and write down the foam oil characteristic of output crude oil.
The present invention is utilized in the taper fill out sand tube sandpack column is set; The draining end cross-sectional area of taper fill out sand tube phases down; Make the working condition that sandpack column more can the closing to reality oil reservoir; With the oil well production conditional likelihood, the feed flow situation of simulation oil well that can be more approaching depleted exploitation in oil reservoir has satisfied experiment purpose.
And then the present invention can observe the formation of gas phase in the taper sandpack column and the distribution situation of saturation ratio through CT scan.
And then the present invention utilizes visible observation window and camera head can directly observe and write down the foam oil characteristic of output crude oil.
And then, the present invention utilize a plurality of pressure sensors can measurement model in the pressure reduction of diverse location, the condition of production of assistant analysis foam oil.
Description of drawings
Fig. 1 is the overall structure sketch map that utilizes the depleted experimental facilities of producing of taper fill out sand tube simulation gassiness viscous crude according to the embodiment of the invention;
Fig. 2 is the structural profile according to the taper fill out sand tube of the embodiment of the invention;
Fig. 3 is the sectional structure of the A-A direction of Fig. 2.
The drawing reference numeral explanation:
1, taper fill out sand tube 11, tube wall 14, protecgulum 141, draining hole 16, bonnet
161, repairing hole 18, cavity 2, CT machine 3, data collecting system 4, height are press-fitted a kind device
5, high-pressure metering pump 61, gas dosing device 63, liquid metering device 81, visible observation window
83, counterbalance valve 85, connecting line 9, camera head
The specific embodiment
To understand in order technical characterictic of the present invention, purpose and effect being had more clearly, to contrast the description of drawings specific embodiment of the present invention at present.
As shown in Figures 2 and 3; The present invention provides a kind of taper fill out sand tube 1; Taper fill out sand tube 1 according to the embodiment of the invention comprises: the tube wall 11 of taper, be separately positioned on the protecgulum 14 and the bonnet 16 at said tube wall 11 two ends; Form the cavity 18 of taper or taper type between said protecgulum 14, bonnet 16 and the said tube wall 11, said protecgulum 14 is provided with draining hole 141, and said bonnet 16 is provided with repairing hole 161.During experiment, crude oil is 161 entering taper fill out sand tube 1 from the repairing hole, and 141 flow out taper fill out sand tube 1 from the draining hole.
Further; As shown in Figure 1, said experimental facilities also comprises: to the CT machine 2 of said taper fill out sand tube 1 scanning, said tube wall is by polyether-ether-ketone-process; So that the CT machine can penetrate taper fill out sand tube 1 and scan, with the formation of gas phase and the distribution situation of saturation ratio in the observation taper sandpack column.
Further, as shown in Figure 1, said experimental facilities also comprises: be arranged on the pressure sensor in the said sandpack column.Shown in pressure sensor for example be P1, P2, P3, P4, can measurement model in the pressure reduction of diverse location, the condition of production of assistant analysis foam oil.
Further; As shown in Figure 1; Said experimental facilities also comprises: the visible observation window 81 that is arranged on draining hole 141 1 ends of said taper fill out sand tube; Output crude oil through output crude oil is introduced the container with visible observation window 81, can intuitively be observed the foam oil characteristic with output crude oil after flowing out from draining hole 141.
Further; As shown in Figure 1; Said experimental facilities also comprises: to the camera head 9 of said visible observation window 81 shootings, camera head 9 is camera or video camera for example, is arranged on the top of visible observation window 81; Like this, can obtain situation of change in the depleted manufacturing process of foam oil under the more different parameters.
Experimental facilities of the present invention also comprises: connecting line 85; Because conveying crude oil (or experiment is with oil) is arranged on the counterbalance valve 83 on the connecting line 85, is used for the pressure in the connecting line 85; The height that is arranged on the connecting line 85 is press-fitted kind device 4; Be used for the preparation experiment with oil (the gassiness viscous crude of certain dissolved gas oil ratio), be arranged on the high-pressure metering pump 5 on the connecting line 85, from join kind device, inject in the sandpack column of taper fill out sand tube 1 gassiness viscous crude sample; Be arranged on gas dosing device 61 and liquid metering device 63 on the connecting line 85, be used to measure the liquid and the gas of outflow.Experimental facilities of the present invention also comprises: data collecting system 3 for example is a computer, is connected with gas dosing device 61, liquid metering device 63, camera head 9, each sensor and CT machine signal, gathers the data that these devices obtain and analyzes.
As shown in Figure 1, the present invention also provides a kind of experimental technique, and said experimental technique is provided with sandpack column in the taper fill out sand tube.
Said experimental technique is observed the formation of gas phase in the sandpack column and the distribution situation of saturation ratio through CT scan.
Said experimental technique utilizes visible observation window and camera head to observe and write down the foam oil characteristic of output crude oil.
Concrete experimental technique of the present invention and step for example are: the gassiness viscous crude that at first is press-fitted 4 li certain dissolved gas oil ratios of preparation of kind device at height; After treating that solution gas fully dissolves; Regulate counterbalance valve 83 to more than the bubble point pressure, from join kind device, inject gassiness viscous crude sample in the sandpack column of taper fill out sand tube 1 through high-pressure metering pump 5 and make oil sample fully saturated in model; The depleted experiment of beginning, with the pressure of certain speed reduction counterbalance valve, the corresponding model that flows out gradually of crude oil in the model through the pressure of pressure sensor monitoring model each several part, is opened CT machine and camera head 9, liquid and gas that metering is flowed out then.Treat that counterbalance valve stops step-down, no longer include fluid in the model and flow out, stop experiment; Analyze the variation relation of oil recovery, gas production and pressure; Observation analysis CT scan image and image pickup result.
The permeability of the sandpack column through changing counterbalance valve pressure decay rate, taper fill out sand tube, the original dissolved gas oil ratio of oil sample etc. repeat above experimental technique and step, can observe and study influence and the depleted development effectiveness of gassiness viscous crude that pressure decay rate, permeability and original dissolved gas oil ratio etc. form " foam oil ".
This experimental facilities utilizes the taper fill out sand tube in the laboratory, to simulate the depleted working condition of actual gassiness heavy crude reservoir as far as possible with method; Situation of change and the microbubble of observing the depleted pressure in production process situation of change of gassiness viscous crude, the diverse location different pressures of microbubble in sandpack column through means researchs such as pressure monitoring, CT scan and video recordings under different pressures in the situation of change of the port of export etc.; Pressure drop rate, permeability, original dissolved gas oil ratio etc. reach the influence to the oil recovery effect to the influence that generates foam in the depleted process of research gassiness viscous crude; For the depleted exploitation of actual gassiness heavy crude reservoir provides instruction, thereby improve its development effectiveness as far as possible.
The above is merely the schematic specific embodiment of the present invention, is not in order to limit scope of the present invention.For each ingredient of the present invention can make up under the condition of not conflicting each other, any those skilled in the art, equivalent variations of under the prerequisite that does not break away from design of the present invention and principle, having done and modification all should belong to the scope that the present invention protects.
Claims (10)
1. one kind is utilized the depleted experimental facilities of producing of taper fill out sand tube simulation gassiness viscous crude; It is characterized in that; Said experimental facilities comprises: the taper fill out sand tube, and said taper fill out sand tube comprises: the tube wall of taper, be separately positioned on the protecgulum and the bonnet at said tube wall two ends, form the cavity of taper or taper type between said protecgulum, bonnet and the said tube wall; Said protecgulum is provided with the draining hole, and said bonnet is provided with the repairing hole.
2. the depleted experimental facilities of producing of taper fill out sand tube simulation gassiness viscous crude that utilizes as claimed in claim 1 is characterized in that said tube wall is processed by polyether-ether-ketone.
3. the depleted experimental facilities of producing of taper fill out sand tube simulation gassiness viscous crude that utilizes as claimed in claim 1 is characterized in that, is provided with sandpack column in the said taper fill out sand tube.
4. the depleted experimental facilities of producing of taper fill out sand tube simulation gassiness viscous crude that utilizes as claimed in claim 1 is characterized in that said experimental facilities also comprises: to the CT machine of said taper fill out sand tube scanning.
5. the depleted experimental facilities of producing of taper fill out sand tube simulation gassiness viscous crude that utilizes as claimed in claim 2 is characterized in that said experimental facilities also comprises: be arranged on the pressure sensor in the said sandpack column.
6. the depleted experimental facilities of producing of taper fill out sand tube simulation gassiness viscous crude that utilizes as claimed in claim 1 is characterized in that said experimental facilities also comprises: the visible observation window that is arranged on draining hole one end of said taper fill out sand tube.
7. the depleted experimental facilities of producing of taper fill out sand tube simulation gassiness viscous crude that utilizes as claimed in claim 6 is characterized in that said experimental facilities also comprises: to the camera head of said visible observation window shooting.
8. one kind is utilized the depleted experimental technique of producing of taper fill out sand tube simulation gassiness viscous crude, it is characterized in that said experimental technique is provided with sandpack column in the taper fill out sand tube.
9. sharp experimental technique as claimed in claim 8 is characterized in that, said experimental technique is observed the formation of gas phase in the sandpack column and the distribution situation of saturation ratio through CT scan.
10. sharp experimental technique as claimed in claim 8 is characterized in that, said experimental technique utilizes visible observation window and camera head to observe and write down the foam oil characteristic of output crude oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102037800A CN102704913A (en) | 2012-06-15 | 2012-06-15 | Experimental device and method for simulating exhaustion production of gas-containing thickened oil by utilizing tapered sand filling pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102037800A CN102704913A (en) | 2012-06-15 | 2012-06-15 | Experimental device and method for simulating exhaustion production of gas-containing thickened oil by utilizing tapered sand filling pipe |
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| CN102704913A true CN102704913A (en) | 2012-10-03 |
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| CN2012102037800A Pending CN102704913A (en) | 2012-06-15 | 2012-06-15 | Experimental device and method for simulating exhaustion production of gas-containing thickened oil by utilizing tapered sand filling pipe |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926742A (en) * | 2012-11-15 | 2013-02-13 | 海安发达石油仪器科技有限公司 | Sand filling pipe |
| CN104965062A (en) * | 2015-05-22 | 2015-10-07 | 中国石油大学(华东) | Apparatus for evaluating foam oil generation validity, and method thereof |
| CN107101773A (en) * | 2017-04-14 | 2017-08-29 | 中国石油天然气股份有限公司 | Bubble point pressure and the method for testing and test device for intending bubble point pressure |
| CN109113687A (en) * | 2017-06-26 | 2019-01-01 | 中国石油天然气股份有限公司 | A kind of back-up sand pipe device of simulation core and fill and present method |
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| CN101545368A (en) * | 2009-04-27 | 2009-09-30 | 中国石油大学(华东) | On-line depth profile control method for improving oil displacement effect of polymer of offshore production well |
| CN101609624A (en) * | 2009-07-11 | 2009-12-23 | 西南石油大学 | A kind of preparation method and application thereof that is used for simulated oil in indoor oil displacement experiment |
| CN102052072A (en) * | 2010-12-14 | 2011-05-11 | 中国海洋石油总公司 | Sand-filled pipe device simulating two-dimensional drill core and provided with circular truncated cone shaped cylinder body |
| CN102373918A (en) * | 2011-11-29 | 2012-03-14 | 西南石油大学 | Oil well batch production simulation experimental facility for low-permeability reservoir |
| CN202645535U (en) * | 2012-06-15 | 2013-01-02 | 中国石油天然气股份有限公司 | Experimental device utilizing conical sand filling pipe to simulate gassy thickened oil depletion production |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101545368A (en) * | 2009-04-27 | 2009-09-30 | 中国石油大学(华东) | On-line depth profile control method for improving oil displacement effect of polymer of offshore production well |
| CN101609624A (en) * | 2009-07-11 | 2009-12-23 | 西南石油大学 | A kind of preparation method and application thereof that is used for simulated oil in indoor oil displacement experiment |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926742A (en) * | 2012-11-15 | 2013-02-13 | 海安发达石油仪器科技有限公司 | Sand filling pipe |
| CN104965062A (en) * | 2015-05-22 | 2015-10-07 | 中国石油大学(华东) | Apparatus for evaluating foam oil generation validity, and method thereof |
| CN107101773A (en) * | 2017-04-14 | 2017-08-29 | 中国石油天然气股份有限公司 | Bubble point pressure and the method for testing and test device for intending bubble point pressure |
| CN107101773B (en) * | 2017-04-14 | 2019-07-09 | 中国石油天然气股份有限公司 | The test method and test device of bubble point pressure and quasi- bubble point pressure |
| CN109113687A (en) * | 2017-06-26 | 2019-01-01 | 中国石油天然气股份有限公司 | A kind of back-up sand pipe device of simulation core and fill and present method |
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Application publication date: 20121003 |