CN101672172A - Simulation fracture plugging test device and test method - Google Patents
Simulation fracture plugging test device and test method Download PDFInfo
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- CN101672172A CN101672172A CN200910167764A CN200910167764A CN101672172A CN 101672172 A CN101672172 A CN 101672172A CN 200910167764 A CN200910167764 A CN 200910167764A CN 200910167764 A CN200910167764 A CN 200910167764A CN 101672172 A CN101672172 A CN 101672172A
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Abstract
The invention relates to a simulation fracture plugging test device and a test method used in drilling operation in oil-gas fields, which can estimate fracture plugging materials with longer fracturedepth and a plugging drilling fluid or completion fluid system, and truly reflect the plugging effect of fracture leakage loss with depth. The test device consists of a fracture test module and a highpressure container. The technical scheme thereof is as follows: the upper end of the high pressure container is provided with an O-shaped seal ring of the high pressure container; the top part of anupper cover is provided with a needle check valve; the needle check valve is connected with the quick joint of the high pressure gas pipe of a nitrogen bottle; the high pressure container is connectedonto an upright post by a bottom cover and a bottom cover connecting flange; the fracture test module is located by a module locating sleeve, and is fixed by a module connecting fastening bolt; and aplugging fluid outlet pipeline is connected with a plugging fluid outlet connecting flange. The invention has the advantages of reasonable simulation fracture structure, stable and reliable high pressure sealing and working, convenient operation of test device, and the like, and can provide important test device and research method for customizing a production field plugging scheme.
Description
Technical field:
The present invention relates to be used for the fractured leakage of oilfield drilling operation and the simulation fracture plugging experimental rig and the test method of leak stopping research usefulness, plugging effect, leak stopping mechanism, the leak stopping formulating of loss circulation material evaluation and plugging drilling fluid, completion fluid and other oil gas well working fluid carried out in the crack that is specially adapted to have under the simulation well degree of depth.
Background technology:
The complex engineering situation that leakage is ubiquity in the oil and gas well drilling process, often meet, the down hole problem that causes by it and other various down-holes serious accident of bringing out by it, very big to drilling well, completion engineering harm, be the problem that domestic and international petroleum works circle are extremely paid close attention to always.But, make it to become domestic and international drilling well, completion engineering and fail the great technical barrier that solves fully so far owing to its reason complexity, restraining factors are a lot.
People have created multiple blocking method in long-term leak stopping practice process, but the prerequisite of these methods is must be to the research experiment such as sealing characteristics of relevant leak stopping mechanism, leak stopping prescription and plugging drilling fluid, so that determine counte-rplan as early as possible, therefore, corresponding leak stopping evaluation experimental facilities and relevant evaluation method thereof just become the basis that all technical schemes propose.
How can and correctly simulate the borehole wall and the plugging effect of evaluation plugging drilling fluid (completion fluid) in the experiment desk research, for the on-the-spot leak-proof leak-stopping technology of oil drilling provides the foundation and the necessary experimental data of science, be a great problem that puzzlement improves leak stopping experimental technique level and order of accuarcy always.It is at present domestic that what generally use is API indoor static leak stopping evaluation experimental rig, this device is owing to leak bed and the position and the unreasonable structure of seam plate, the crack that can not simulate the leakage stratum truly has the situation of certain depth, can this have just proposed new an urgent demand: research and design go out a kind of brand-new fracture plugging determinator, the crack of this device simulation has the long degree of depth or length, after finishing, test can separate the crack, observe the loss circulation material degree of depth that diverse location stops in the crack, analyze and seal, the envelope larynx, the envelope waist, the different plugging effects and the mechanism of action of sealing.Assay goes out the shutoff crack effect of loss circulation material thus, and preferred for the prescription of sealing agent, loss circulation material, determining of the evaluation of plugging drilling fluid shutoff crack usefulness and leak stopping scheme and technology provides a kind of scientific and effective test evaluation means.For this reason, a kind of fracture plugging analogue experiment installation is proposed, this device pressurizes by gases at high pressure, make test leak stopping fluid under the effect of gas pressurized, leakage or leak stopping take place by different openings crack module, and the bearing capacity after the leak stopping, estimate the crack plugging effect of loss circulation material or plugging drilling fluid thus, optimize best leak stopping prescription, analyze leak stopping mechanism, for determining that the fracture plugging scheme provides test basis.Device also can comprise the opening and the outlet in different cracks, the degree of roughness of crack internal face by selecting module combinations simulation variform crack, different cracks.Characteristics such as it is ingenious rationally that this fracture plugging simulation test device has structure, and working stability is reliable, and is easy to operate.
Summary of the invention:
The objective of the invention is: true crack the having a strong impact on that has the degree of depth for scientific evaluation the fracture formation leak stopping, work out plugging drilling fluid and loss circulation material in the completion fluid and leak stopping system after the fracture formation leakage targetedly, plugging effect after the raising fractured reservoir leakage, the spy provides a kind of simulation fracture plugging experimental rig and test method.
In order to achieve the above object, the present invention solves the technical scheme that this technical problem adopts: a kind of simulation fracture plugging experimental rig is made up of high-pressure bottle two parts of simulation fracture module and storage drilling fluid, its architectural feature is: put high-pressure bottle 1 upper surface high-pressure bottle zero RunddichtringO 2, last tops is installed pin type stop valve 4, and pin type stop valve 4 connects with the snap joint of the high-pressure air pipe of nitrogen cylinder; Crack test module 8 in the leakage-stop liquid simulation wellbore hole connecting flange 7 that injection channel flange 6 connects under gas pressure, crack test module 8 are by module positioning sleeve 9 location, and it is fixing to connect trip bolt 10 with module; Leakage-stop liquid outlet conduit 13 connects with leakage-stop liquid outlet connecting flange 14; Crack test module 8 is supported by support column 15, and support column 15 is fixed on the experimental rig base 17 by support column trip bolt 16; High-pressure bottle 1 is connected on the principal post 24 by high-pressure bottle bottom 21 and bottom connecting flange 22 and bottom joint bolt 23.
Crack test module 8 is a changeable type, and the crack is made up of two sheet metals with tapering of symmetry, and the crack has different openings and outlet size, crack length overall 40cm or longer; The sheet metal wall that constitutes the crack needs quarterization to be polished into the non-hydraulically smooth surface of point-like or wire or intersection wire or local point-like according to simulation.
The course of work of test method of the present invention is: a kind of simulation fracture plugging test method, device is installed to the test readiness, put into the leak stopping system of certain volume and go into high-pressure bottle, contain in this system and remain loss circulation material type, the concentration of research evaluation, close high-pressure bottle, and connect upward high-pressure air source; Open high-pressure air source, make gases at high pressure to the pressurization of leak stopping system, under differential pressure action, the leak stopping system in the high-pressure bottle is missed in the crack of the different openings degree and the degree of depth; Pressure is high more, and wastage is more little, and the plugging effect of leak stopping system is good more, otherwise, poor more; Experiment finishes, after the release, take out the crack module, the loss circulation material that writes down inside, crack of taking a picture and weigh is piled up the position and is piled up quality, in conjunction with pressure and wastage data, can analyse in depth out seal outside the crack with the crack in seal the not same-action characteristics of larynx, envelope waist, sealing, analyze fracture plugging mechanism, set up the leak stopping prescription.
The beneficial effect that the present invention has is: (1) but the leak stopping process of simulated formation different openings degree, degree of depth fractured leakage, the test plugging drilling fluid is to the plugging effect in different openings degree and degree of depth crack, for solving fractured leakage leak stopping problem, reliable scientific evaluation means are provided, thereby experiment optimizes loss circulation material type, granularity and grating, formation stops the drilling fluid of non-reservoir and reservoir slit formation stratum generation and the severe leakage of completion fluid effectively at the optimization formula of different openings degree and degree of depth fracture plugging; Characteristics such as (2) to have structure ingenious rationally for the crack module, and high pressure sealing and working stability are reliable, and device for plugging is easy to operate.
Description of drawings:
Fig. 1 is a simulation fracture plugging experimental rig structural representation of the present invention;
Fig. 2 is the structure chart of this device crack test module 8.
Among the figure: 1, high-pressure bottle, 2, high-pressure bottle zero RunddichtringO, 3, container upper cover, 4, pin type stop valve, 5, the spiral cover handle, 6, the passage flange, 7, the simulation wellbore hole connecting flange, 8, the crack test module, 9, the module positioning sleeve, 10, module connects fastening bolt, 11, the leakage-stop liquid discharge control valve, 12, the leakage-stop liquid exit passageway, 13, the leakage-stop liquid outlet conduit, 14, leakage-stop liquid outlet connecting flange, 15, support column, 16, the support column trip bolt, 17, the experimental rig base, 18, surplus liquid bleed valve, 19, surplus liquid outlet connecting tube, 20, surplus liquid outlet duct coupling, 21, the high-pressure bottle bottom, 22, the bottom connecting flange, 23, the bottom joint bolt, 24, column.
The specific embodiment:
During experiment, the required leakage-stop liquid of test is inserted in the high-pressure bottle 1, container upper cover 3 is turned clockwise, airtight by high-pressure bottle zero RunddichtringO 2 that put high-pressure bottle 1 upper surface, last tops is installed pin type stop valve 4, connect with the snap joint of the high-pressure air pipe of nitrogen cylinder, select the constant pressure difference of simulated field conditions as required or increase or reduce pressure by given pace, make the leakage-stop liquid crack test module 8 in the simulation wellbore hole 7 that connects of injection channel flange 6 under pressure, tentative module is by module positioning sleeve 9 location, it is fixing to connect trip bolt 10 with module, when leakage-stop liquid flows out along leakage-stop liquid exit passageway 12 by crack compression leakage-stop liquid discharge control valve 11, leakage-stop liquid outlet conduit 13 connects with leakage-stop liquid outlet connecting flange 14, simulation wellbore hole connecting flange 7 is supported by simulation wellbore hole support column 15, support column 15 is fixed on the experimental rig base 17 by supporting trip bolt 16, after test finishes, open surplus liquid bleed valve 18 remaining leakage-stop liquid in the high-pressure bottle 1 is flowed out along surplus liquid outlet duct coupling 20 through surplus liquid outlet connecting tube 19.High-pressure bottle 1 is connected on the principal post 24 by high-pressure bottle bottom 21 and bottom connecting flange 22 and bottom joint bolt 23.
Claims (3)
1. simulation fracture plugging experimental rig, high-pressure bottle two parts by simulation fracture module and storage drilling fluid are formed, it is characterized in that: put high-pressure bottle (1) upper surface high-pressure bottle zero RunddichtringO (2), last tops is installed pin type stop valve (4), and pin type stop valve (4) connects with the snap joint of the high-pressure air pipe of nitrogen cylinder; Crack test module (8) in the simulation wellbore hole coupling flange (7) that passage flange (6) connects, crack test module (8) are by module positioning sleeve (9) location, and it is fixing to connect trip bolt (10) with module; Leakage-stop liquid outlet conduit (13) connects with leakage-stop liquid outlet coupling flange (14); Crack test module (8) is supported by support column (15), and support column (15) is fixed on the experimental rig base (17) by support column trip bolt (16); High-pressure bottle (1) is connected on the principal post (24) by high-pressure bottle bottom (21) and bottom connecting flange (22) and bottom joint bolt (23).
One kind according to claim 1 the device the simulation fracture plugging test method, it is characterized in that: device is installed to the test readiness, put into the leak stopping system of certain volume and go into high-pressure bottle, contain in this system and remain loss circulation material type, the concentration of research evaluation, close high-pressure bottle, and connect upward high-pressure air source; Open high-pressure air source, make gases at high pressure to the pressurization of leak stopping system, under differential pressure action, the leak stopping system in the high-pressure bottle is missed in the crack of the different openings degree and the degree of depth; Pressure is high more, and wastage is more little, and the plugging effect of leak stopping system is good more, otherwise, poor more; Experiment finishes, after the release, take out the crack module, the loss circulation material that writes down inside, crack of taking a picture and weigh is piled up the position and is piled up quality, in conjunction with pressure and wastage data, can analyse in depth out seal outside the crack with the crack in seal the not same-action characteristics of larynx, envelope waist, sealing, analyze fracture plugging mechanism, set up the leak stopping prescription.
3. simulation fracture plugging experimental rig according to claim 1, it is characterized in that: crack test module (8) is changeable type, the crack is made up of two sheet metals with tapering of symmetry, and the crack has different openings and outlet size, crack length overall 40cm; The sheet metal wall that constitutes the crack needs quarterization to be polished into the non-hydraulically smooth surface of point-like or wire or intersection wire or local point-like according to simulation.
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| CN200910167764A CN101672172A (en) | 2009-09-24 | 2009-09-24 | Simulation fracture plugging test device and test method |
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Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305045A (en) * | 2011-08-05 | 2012-01-04 | 中联煤层气国家工程研究中心有限责任公司 | Shaft crack simulator |
| CN102400677A (en) * | 2011-10-13 | 2012-04-04 | 中国石油集团西部钻探工程有限公司 | Tester for bearing plugging |
| CN102562040A (en) * | 2012-02-02 | 2012-07-11 | 西南石油大学 | Dynamic evaluation instrument for high-temperature and high-pressure drilling fluid loss |
| CN103207052A (en) * | 2013-03-05 | 2013-07-17 | 中国核电工程有限公司 | Test section device for simulating pipeline leakage in nuclear power plant pipeline leakage test |
| CN103485769A (en) * | 2012-06-13 | 2014-01-01 | 中国科学院理化技术研究所 | Sand filling tube combination device for simulating fractured reservoir |
| CN103953332A (en) * | 2014-05-15 | 2014-07-30 | 中国石油大学(华东) | Experimental device and experimental method for simulating dynamic leakage and leaking stoppage of drilling fluid |
| CN105735968A (en) * | 2016-02-20 | 2016-07-06 | 西南石油大学 | Leakage plugging effect evaluation method for permeable leakage |
| CN107202866A (en) * | 2017-06-13 | 2017-09-26 | 北京大学 | A kind of diverting agent temporarily blocks up henchnmrk test device and its method of work and application |
| CN107884335A (en) * | 2017-09-29 | 2018-04-06 | 西南石油大学 | A kind of fracture-type reservoir loss circulation material blocks the decision method with failure cause |
| CN107939383A (en) * | 2017-11-14 | 2018-04-20 | 西南石油大学 | A kind of method for expanding narrow ' Safe Density Windows |
| CN108222921A (en) * | 2016-12-22 | 2018-06-29 | 中国石油天然气股份有限公司 | The test method of stratum analog machine and formation fracture |
| CN108505964A (en) * | 2018-06-12 | 2018-09-07 | 西南石油大学 | A kind of high pressure dynamic leak stopping evaluation experimental provision and method |
| CN108872044A (en) * | 2018-07-24 | 2018-11-23 | 江苏拓创科研仪器有限公司 | Long crack blocks imitative experimental appliance |
| CN110485999A (en) * | 2019-06-27 | 2019-11-22 | 西南石油大学 | Simulation fracture module, slit formation drilling fluid leak stopping test device |
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| CN110954451A (en) * | 2019-12-06 | 2020-04-03 | 中国石油天然气股份有限公司 | Application concentration and application particle size optimization method of flexible gel particle plugging agent |
| CN111537344A (en) * | 2020-05-11 | 2020-08-14 | 西南石油大学 | Method for testing compressive strength of rigid plugging material |
| CN112326886A (en) * | 2020-11-02 | 2021-02-05 | 四川省地质矿产勘查开发局四0三地质队 | Multi-mode test drilling leak stoppage test device and test method |
| CN112684112A (en) * | 2020-12-18 | 2021-04-20 | 中国石油天然气集团有限公司 | Leakage-layer-simulating dynamic pressure-bearing leakage-stopping instrument |
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| CN114075975A (en) * | 2022-01-19 | 2022-02-22 | 中国石油大学(华东) | Experimental device and method for researching gas-liquid exchange condition in gas-invaded fracture |
| CN114198084A (en) * | 2021-08-17 | 2022-03-18 | 中国石油天然气集团有限公司 | Fractured stratum plugging simulation evaluation device and evaluation method |
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| CN2575293Y (en) * | 2002-07-23 | 2003-09-24 | 华北石油管理局钻井工艺研究院 | Bead type oil-production sandproof pipe |
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| CN2575293Y (en) * | 2002-07-23 | 2003-09-24 | 华北石油管理局钻井工艺研究院 | Bead type oil-production sandproof pipe |
| CN2872358Y (en) * | 2005-10-08 | 2007-02-21 | 西南石油学院 | High-temperature and high-pressure plugging tester |
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| CN102305045A (en) * | 2011-08-05 | 2012-01-04 | 中联煤层气国家工程研究中心有限责任公司 | Shaft crack simulator |
| CN102400677A (en) * | 2011-10-13 | 2012-04-04 | 中国石油集团西部钻探工程有限公司 | Tester for bearing plugging |
| CN102562040A (en) * | 2012-02-02 | 2012-07-11 | 西南石油大学 | Dynamic evaluation instrument for high-temperature and high-pressure drilling fluid loss |
| CN102562040B (en) * | 2012-02-02 | 2014-10-01 | 西南石油大学 | Dynamic evaluation instrument for high-temperature and high-pressure drilling fluid loss |
| CN103485769A (en) * | 2012-06-13 | 2014-01-01 | 中国科学院理化技术研究所 | Sand filling tube combination device for simulating fractured reservoir |
| CN103485769B (en) * | 2012-06-13 | 2016-05-25 | 中国科学院理化技术研究所 | A kind of sand-filling tube combination device of simulation fracture oil reservoir |
| CN103207052A (en) * | 2013-03-05 | 2013-07-17 | 中国核电工程有限公司 | Test section device for simulating pipeline leakage in nuclear power plant pipeline leakage test |
| CN103953332A (en) * | 2014-05-15 | 2014-07-30 | 中国石油大学(华东) | Experimental device and experimental method for simulating dynamic leakage and leaking stoppage of drilling fluid |
| CN105735968A (en) * | 2016-02-20 | 2016-07-06 | 西南石油大学 | Leakage plugging effect evaluation method for permeable leakage |
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| CN107884335B (en) * | 2017-09-29 | 2019-10-18 | 西南石油大学 | A kind of determination method of the fracture-type reservoir plugging material closure with failure cause |
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| CN108505964B (en) * | 2018-06-12 | 2024-02-23 | 兰州城市学院 | High-pressure dynamic plugging evaluation experimental device and method |
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| CN112814662A (en) * | 2021-01-11 | 2021-05-18 | 中海油田服务股份有限公司 | Stratum fracture leaking stoppage simulation device and simulation system |
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| CN114198084A (en) * | 2021-08-17 | 2022-03-18 | 中国石油天然气集团有限公司 | Fractured stratum plugging simulation evaluation device and evaluation method |
| CN114075975A (en) * | 2022-01-19 | 2022-02-22 | 中国石油大学(华东) | Experimental device and method for researching gas-liquid exchange condition in gas-invaded fracture |
| CN114075975B (en) * | 2022-01-19 | 2022-04-12 | 中国石油大学(华东) | Experimental device and method for researching gas-liquid exchange condition in gas-invaded fracture |
| CN115929287A (en) * | 2022-10-13 | 2023-04-07 | 西南石油大学 | Crack plugging layer pressure-bearing dispersing capacity measuring device |
| CN115929287B (en) * | 2022-10-13 | 2023-10-24 | 西南石油大学 | Crack plugging layer pressure-bearing dispersion capability measuring device |
| CN116432399A (en) * | 2023-03-06 | 2023-07-14 | 西南石油大学 | Experimental evaluation method for leakage control efficiency of fractured stratum drilling fluid |
| CN116432399B (en) * | 2023-03-06 | 2024-02-20 | 西南石油大学 | Experimental evaluation method for leakage control efficiency of fractured stratum drilling fluid |
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Application publication date: 20100317 |