CN101270652B - Continuous pipe liquid carrying and eyelet shunting simulation device in horizontal pit shaft - Google Patents
Continuous pipe liquid carrying and eyelet shunting simulation device in horizontal pit shaft Download PDFInfo
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- CN101270652B CN101270652B CN200810044384.1A CN200810044384A CN101270652B CN 101270652 B CN101270652 B CN 101270652B CN 200810044384 A CN200810044384 A CN 200810044384A CN 101270652 B CN101270652 B CN 101270652B
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Abstract
A liquid-carrying and eyelet-shunting simulator for a connector belongs to the field of manufacturing technology of the acid fracturing laboratory equipment of oil gas industry, comprising an experimental shaft, a liquid pump-over mechanism, a data acquisition and a safety mechanism. The liquid-carrying and eyelet-shunting simulator is arranged in a horizontal shaft. The experimental shaft comprises an outer tube and an inner tube. The liquid pump-over mechanism comprises a displacement pump, a feeding barrel, a liquid inlet tube and a liquid outlet tube. The data acquisition comprises a collector and a processing unit. The collector is connected with the processing unit by a cable conductor group. The safety mechanism comprises a ladder, a winding drum and a guardrail. With similarity principle adopted, the liquid-carrying and eyelet-shunting simulator provided by the invention can carry out the stimulation of liquid displacing, sand washing and sand-carrying in the horizontal shaft as well as the stimulation of shunting and liquor drainage in the eyelet of the horizontal well.
Description
Technical field:
In horizontal wellbore, continuous pipe liquid carries and an eyelet shunting analogue means, carries the simulated test of shunting with eyelet for horizontal wellbore continuous pipe liquid, belongs to the manufacturing technology field of industrial gas oil fracture acidizing experimental facilities.
Background technology:
Horizontal well is a kind of effective means of development of fields, and it can significantly improve the comprehensive benefit of reservoir exploration and development.After nineteen twenty-eight, the first in the world saliva horizontal well was drilled to, horizontal well develops rapidly, and the speed with annual 600-1000 mouth water horizontal well increases, China has been drilled to first horizontal well in Sichuan in nineteen sixty-five, successively in each oil field, started the application of horizontal well technology, sand-flushing technique in horizontal well and the technique in matrix acidifying technique and straight well have very large difference, not only show the increase of task difficulty, but also restricting the formulation of technology measure and the effect after construction operation, mainly because there is straight well section in water horizontal well simultaneously, inclination section, three kinds of pit shafts of horizontal segment, particularly under long horizontal well pit shaft condition, the complex relationship of gravity and horizontal wellbore direction has affected existence form and the mobile migration rule of medium in horizontal wellbore, add complicated net horizontal section well track, need the eyelet number of perforation many, perforation orientation is changeable, the difference that eyelet distributes, and liquid injection process, operating types etc. have all strengthened the difficulty of horizontal well sand washing well-flushing and matrix acidifying, and current horizontal well sand washing well-flushing and matrix acidifying technique adopt the method for experience mostly, namely observe on one side, Yi Bian grope, improve on one side, according to site specific, adjust, there is no science, quantitative technology, in this case, be just difficult to carry out technology optimization, from technical literature request for information, although the research of horizontal well technology is had to longer history abroad, but the technical literature of relevant horizontal well pit shaft sand-flushing there is not yet, in the document about horizontal well matrix acidifying, main research is liquid storing technology, and achievement in research and effect have been obtained, but from practice, the factor of its consideration is still less, particularly not tight with being connected of coiled tubing technology and horizontal well situation.
Summary of the invention:
The object of the invention is for the deficiencies in the prior art, according to similarity principle, development and design goes out to simulate to be carried out in horizontal well pit shaft for liquid, sand washing, takes continuous pipe liquid in the horizontal wellbore of the aspect basic works such as the shunting in net horizontal section eyelet of sand and liquid, discharge opeing and carry and eyelet shunting analogue means.
The present invention is achieved in that and the present invention includes experiment pit shaft, liquid pumping mechanism, data acquisition mechanism and release mechanism, it is characterized in that: described experimental wwll cylinder comprises outer tube and inner tube, top at outer tube is provided with Semi-seal device, and inner tube through Semi-seal device setting within the outer tube; Described liquid pumping mechanism comprises displacement pump, liquid-supplying bucket, feed tube and drain pipe, and one side of displacement pump connects liquid-supplying bucket, and another side is connected with inner tube by feed tube; Data acquisition mechanism comprises collector and treating apparatus, and collector is connected with treating apparatus by cable group; Described release mechanism consists of helper, reel and guardrail.
Described inner tube is transparent plastic pipe, and outer tube is lucite tube, and inner tube extends to the tail end of outer tube in outer tube always.
Described inner tube is wrapped on the reel of release mechanism, and is connected with feed tube.
In the upper end of described outer tube, be provided with dismountable drain pipe, drain pipe is connected to liquid waste processing pond.
Described collector comprises top and afterbody pressure sensor, electronic balance and camera, and top and afterbody pressure sensor are separately positioned on Semi-seal device and preforation tunnel section.
Within the scope of one meter of the rear end of outer tube, be drilled with eyelet, the diameter of eyelet is 8mm, and spacing is 100mm, and eyelet direction is 30 ° up and down.
Before the eyelet of outer tube back-end, be provided with back-pressure valve, at the tail end of outer tube, be provided with discharging tube.
Described experimental wwll cylinder is L shaped shape, long four meters, between the outer tube of experimental wwll cylinder and outer tube, by attachment cap, is connected, and is provided with ring washer and sealing ring in attachment cap;
Theoretical foundation of the present invention is:
According to dynamic similarity principle and geometrical similarity principle, carry out the design of experimental facilities, dynamic similarity is the basis of carrying out simulated experiment design, dynamic similarity principle of the present invention is considered shear rate and two indexs of Lei Luo number, in the design of this experimental facilities owing to relating to the interaction between liquid and liquid, liquid and solid phase particles inside and outside pipe, therefore using liquid, the shear rate in pipe is as the internal-and external diameter of main parameter of measurement analogue means pipe and the flow of liquid-supplying system, and the shear rate of liquid in pipe is by formula below:
The γ ' is here the shear rate of liquid in pipe, S
-1; Q is liquid in pipe flow velocity, mL/min; D is the internal diameter of pipe, cm.Simulated object is in diameter 139mm sleeve pipe, 38.1mm diameter coiled tubing
At 0.23m
3under/min discharge capacity in the operation of small curvature radius horizontal well.By the result of calculation to simulated object different displacements down cut speed, according to the consistent requirement of shear rate, take into full account the restrictions such as bearing capacity of metering technical data required for the pump, lucite tube for current experiment, and select the inner tube of sizes, simulate more complicated experiment condition;
The simultaneously fluidised form contrast of the thunder Lip river number judgement liquid in pipe according to liquid, the thunder Lip river number of liquid in pipe is by formula below:
The N here
refor thunder Lip river number, zero dimension; Q is liquid in pipe flow velocity, m
3/ min; Liquid viscosity, mPa.s; Relying on thunder Lip river number is mainly whether judgement simulation is consistent with actual fluid flow pattern, as another index of simulation;
Geometrical similarity principle is mainly used in designing distribution and the horizontal section length of eyelet, and the earial drainage area that is defined as true hole eye of barrel hole size is actual perforation phase place and Kong Mi with the ratio of pit shaft inner area, Kong Mi and perforation phase place; Horizontal section length is considered to occur that stable edge effect, liquid mix distance, the mobile migration distance of sand grains under experiment flow velocity;
While testing, first open experiment pit shaft afterbody tapping line, in the outer tube of experiment pit shaft, insert sand grains, then close afterbody tapping line, the Semi-seal device that the inner tube of experiment is arranged from outer tube top inserts, until inner tube tail end is in assigned address, then clear water will be filled in pit shaft, in liquid-supplying bucket, pack enough experiment liquid into, then the closed circuit being comprised of liquid-supplying bucket, displacement pump, feed tube, experiment pit shaft, drain pipe is placed in to state capable of circulation, start displacement pump, to the inner tube fluid injection of experimental wwll cylinder, test, during experiment, displacement pump is set as to different rotating speeds, so just have different reservoir quantities, reach and carry out the test that different flow drags inner tube, or carry out the test under the static condition of inner tube, by observing transparent outer tube, until being taken out of experiment pit shaft completely, the sand grains of inserting in the outer tube of experiment pit shaft just completed test, in the process of test, the overall process of experiment is observed and recorded to camera, the upper pressure sensor that acquisition processing device connects by cable, afterbody pressure sensor, electronic balance is recorded the pressure of experiment, the parameters such as flow, for the result of test is analyzed, after experiment, open the discharging tube of experiment pit shaft outer tube afterbody and discharge raffinate.
Advantage of the present invention and beneficial effect are: the bearing capacity of experimental facilities of the present invention is 0.8MPa, and maximum liquid displacement is 41L/min, and test medium can adopt clear water, mineralized water, have the nonacid liquid of certain viscosity, and experimental temperature is normal temperature; Pressure sensor range 0-1.5MPa, precision 0.25%FS, the maximum shear speed that can simulate is 2328S
-1, can simulate in 139mm sleeve pipe, 38.1mm coiled tubing is at 0.23m
3under/min discharge capacity in the experiment of small curvature radius horizontal well; Can also carry out that liquid in horizontal wellbore is replaced, sand setting carries and the analog study such as acidizing treatment process preforation tunnel separating liquid rule for research application coiled tubing, have the advantages that for the optimization of horizontal well sand washing well-flushing and matrix acidifying, to provide foundation.
Accompanying drawing explanation:
Fig. 1 is broken section mounting structure schematic diagram of the present utility model.
Fig. 2 is the amplification sectional structure schematic diagram of sequence number 12 in the utility model Fig. 1.
The specific embodiment:
The present invention includes experiment pit shaft, liquid pumping mechanism, data acquisition mechanism and release mechanism, experimental wwll cylinder comprises outer tube 13 and inner tube 16, on the top of outer tube 13, be provided with Semi-seal device 15, in the rear end of outer tube 13, be drilled with eyelet 10, inner tube 16 is arranged in outer tube 13 through Semi-seal device 15; Liquid pumping mechanism comprises displacement pump 3, liquid-supplying bucket 2, feed tube 18 and drain pipe 14, and one side of displacement pump 3 connects liquid-supplying bucket 2, and another side connects feed tube 18, and is connected with inner tube 16 by feed tube 18; The upper pressure sensor 17 of data acquisition mechanism is arranged on Semi-seal device 15 places, afterbody pressure sensor 7 is arranged on 10 sections of preforation tunnels, and acquisition processing device 21 is connected with upper pressure sensor 17, afterbody pressure sensor 7, electronic balance 6 and camera 8 by cable group 5; Inner tube 16 can consist of lucite pipe, and outer tube 13 is single lucite tube, between outward appearance, by attachment cap 12, is connected; Inner tube 16 is wrapped on reel 19, and is connected with feed tube 18; The upper end of outer tube 13 is provided with dismountable drain pipe 14, and drain pipe is directly connected to liquid waste processing pond; Before the eyelet 10 of outer tube 13 rear ends, be provided with back-pressure valve 11; Inner tube 16 can extend to the tail end of outer tube 13 in outer tube 13 always; The tail end of outer tube 13 is provided with discharging tube 9; Within the scope of one meter of the rear end of outer tube 13, be drilled with eyelet 10, the diameter of eyelet is 8mm, and spacing is 100mm, and eyelet direction is 30 ° up and down; Outer tube 13 is fixed in fastening devices 4, and outer tube 13 is L shaped shape, and long four meters, outer tube 13 is connected by attachment cap 12, is provided with ring washer and sealing ring in attachment cap;
Experiment pit shaft has three main analog functuions, the one, well state and the liquid that can simulate main level well shaft enter the flow regime after well at coiled tubing, the 2nd, simulation carry out coiled tubing in horizontal well pit shaft for liquid, sand washing, take sand mo(u)ld draft experiment, the 3rd, can carry out the aspect basic experiments such as the shunting of liquid in net horizontal section eyelet, discharge opeing;
While testing, first open experiment pit shaft afterbody discharging tube 9, in the outer tube 13 of experiment pit shaft, insert sand grains, then close afterbody discharging tube 9, the Semi-seal device 15 that the inner tube 16 of experiment is arranged from outer tube 13 tops inserts, until the tail end of inner tube 16 is in assigned address, then clear water will be filled in pit shaft, in liquid-supplying bucket 2, pack enough experiment liquid into, then will be by liquid-supplying bucket 2, displacement pump 3, feed tube 18, inner tube 16, the closed circuit that the annular space of inner tube 16 and outer tube 13 and drain pipe 14 form is placed in state capable of circulation, start displacement pump 3, inner tube 16 fluid injections to experimental wwll cylinder are tested, during experiment, displacement pump 3 is set as to different rotating speeds, so just have different reservoir quantities, reach the test that drags inner tube 16 under different flows, or carry out the test of inner tube 16 under static condition, by observing transparent outer tube 13, until being taken out of outer tube 13 completely, the sand grains of inserting in outer tube 13 just completed test, in the process of test, the overall process of experiment is observed and recorded to camera 8, the upper pressure sensor 17 that acquisition processing device 21 connects by cable group 5, afterbody pressure sensor 7, electronic balance 6 is recorded the pressure of experiment, the parameters such as flow, for the result of test is analyzed, after experiment, open the discharging tube 9 of experiment pit shaft outer tube 13 afterbodys and discharge raffinate, the helper 1 arranging for experimenter, on helper, operate inner tube on propose action.
Claims (8)
1. in a horizontal wellbore, continuous pipe liquid carries and eyelet shunting analogue means, comprise experimental wwll cylinder, liquid pumping mechanism, data acquisition mechanism and release mechanism, it is characterized in that: described experimental wwll cylinder comprises outer tube and inner tube, top at outer tube is provided with Semi-seal device, and inner tube through Semi-seal device setting within the outer tube; Described liquid pumping mechanism comprises displacement pump, liquid-supplying bucket, feed tube and drain pipe, and one side of displacement pump connects liquid-supplying bucket, and another side is connected with inner tube by feed tube; Data acquisition mechanism comprises collector and treating apparatus, and collector is connected with treating apparatus by cable group; Described release mechanism consists of helper, reel and guardrail.
2. in horizontal wellbore according to claim 1, continuous pipe liquid carries and eyelet shunting analogue means, it is characterized in that: described inner tube is transparent plastic pipe, and outer tube is lucite tube, and inner tube extends to the tail end of outer tube in outer tube always.
3. in horizontal wellbore according to claim 1, continuous pipe liquid carries and eyelet shunting analogue means, it is characterized in that: described inner tube is wrapped on the reel of release mechanism, and is connected with feed tube.
4. in horizontal wellbore according to claim 1, continuous pipe liquid carries and eyelet shunting analogue means, it is characterized in that: in the upper end of described outer tube, be provided with dismountable drain pipe, drain pipe is connected to liquid waste processing pond.
5. in horizontal wellbore according to claim 1, continuous pipe liquid carries and eyelet shunting analogue means, it is characterized in that: described collector comprises top and afterbody pressure sensor, electronic balance and camera, top and afterbody pressure sensor are separately positioned on Semi-seal device and preforation tunnel section.
6. in horizontal wellbore according to claim 1, continuous pipe liquid carries and eyelet shunting analogue means, it is characterized in that: within the scope of one meter of the rear end of outer tube, be drilled with eyelet, the diameter of eyelet is 8mm, and spacing is 100mm, and eyelet direction is 30 ° up and down.
7. in horizontal wellbore according to claim 1, continuous pipe liquid carries and eyelet shunting analogue means, it is characterized in that: before the eyelet of outer tube back-end, be provided with back-pressure valve, at the tail end of outer tube, be provided with discharging tube.
8. in horizontal wellbore according to claim 1, continuous pipe liquid carries and eyelet shunting analogue means, it is characterized in that: described experimental wwll cylinder is L shaped shape, long four meters, between the outer tube of experimental wwll cylinder and outer tube, by attachment cap, be connected, in attachment cap, be provided with ring washer and sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810044384.1A CN101270652B (en) | 2008-05-09 | 2008-05-09 | Continuous pipe liquid carrying and eyelet shunting simulation device in horizontal pit shaft |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810044384.1A CN101270652B (en) | 2008-05-09 | 2008-05-09 | Continuous pipe liquid carrying and eyelet shunting simulation device in horizontal pit shaft |
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| CN101270652A CN101270652A (en) | 2008-09-24 |
| CN101270652B true CN101270652B (en) | 2014-11-19 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101539009B (en) * | 2009-04-21 | 2011-10-05 | 中国石油化工股份有限公司 | Foam drainage well bore simulation experiment device for directional well |
| CN101800000B (en) * | 2009-10-30 | 2011-08-03 | 中国石油天然气股份有限公司 | Natural gas exploitation simulator of multi-angle horizontal branch well |
| CN101899972A (en) * | 2010-06-30 | 2010-12-01 | 中国石油大学(北京) | Establishment method of physical model capable of forecasting waterflood development of sandstone reservoirs |
| CN102434145A (en) * | 2011-08-10 | 2012-05-02 | 中国石油天然气股份有限公司 | Horizontal well experimental system for horizontal well section with adjustable angle |
| CN102704923A (en) * | 2012-06-05 | 2012-10-03 | 中国石油化工股份有限公司 | Underground physical simulation test device for horizontal well |
| CN102839967B (en) * | 2012-09-20 | 2015-05-13 | 中国石油化工股份有限公司 | Multifunctional horizontal gas well simulation experiment device |
| CN104280252B (en) * | 2013-07-05 | 2017-02-15 | 中国石油天然气股份有限公司 | Performance testing device for horizontal well rotary ejector |
| CN109211516B (en) * | 2017-07-06 | 2024-03-26 | 中国石油天然气股份有限公司 | Testing device and method for hydraulic sand carrying capacity of concentric double pipes of inclined shaft |
| CN109882148B (en) * | 2017-12-01 | 2021-11-02 | 中国石油天然气股份有限公司 | Online shunt acidification construction real-time monitoring method |
| CN114320269A (en) * | 2021-12-27 | 2022-04-12 | 重庆科技学院 | Pumping perforation experimental device and method |
| CN116717227B (en) * | 2023-08-07 | 2023-11-17 | 中煤科工西安研究院(集团)有限公司 | Underground directional long-borehole hydraulic fracturing method for underground combined coal mine |
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| CN2169710Y (en) * | 1993-06-11 | 1994-06-22 | 大庆石油学院 | Deep well oil pump dynamic analogue test device |
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Owner name: CHINA PETROLEUM GROUP CHUAN-QING DRILLING ENGINEE Free format text: FORMER OWNER: SICHUN PETROLEUM ADMINISTRATION DOWNHOLE OPERATION COMPANY Effective date: 20081031 |
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Effective date of registration: 20081031 Address after: Four, Chengdu, Sichuan, Chenghua District province two ring road, North paragraph 6 Ruifeng oil downhole operations company, zip code: 610051 Applicant after: Underground operation Company, CNPC Sichuan Petroleum Geophysical Prospecting Company Address before: 6, Ruifeng lane, four section, two ring road, Chenghua District, Sichuan, Chengdu Province, China: 610051 Applicant before: Sichuan Petroleum Underground Working company |
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Effective date of registration: 20200930 Address after: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Chuanqing Drilling Engineering Co.,Ltd. Address before: 610051, Sichuan, Chengdu, Chenghua District two ring road, paragraph 6, Ruifeng alley, No. four oil downhole operation company Patentee before: DOWNHOLE OPERATION COMPANY, CNPC CHUANQING DRILLING ENGINEERING Co.,Ltd. |
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