CN202363006U - Experimental physical model for low-permeability bottom water oil pool exploitation - Google Patents
Experimental physical model for low-permeability bottom water oil pool exploitation Download PDFInfo
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- CN202363006U CN202363006U CN2011204036574U CN201120403657U CN202363006U CN 202363006 U CN202363006 U CN 202363006U CN 2011204036574 U CN2011204036574 U CN 2011204036574U CN 201120403657 U CN201120403657 U CN 201120403657U CN 202363006 U CN202363006 U CN 202363006U
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Abstract
The utility model relates to the field of oil and gas field exploitation, in particular to an experimental physical model for low-permeability bottom water oil pool exploitation, which comprises a low-permeability consolidated model body. The bottom of the low-permeability consolidated model body is connected with a liquid storage tank, an exploitation system and an electrode testing system are arranged on the low-permeability consolidated model body, and the liquid storage tank is connected with an injection system. The experimental physical model has the advantages that firstly, the physical model can be used for simulating low-permeability bottom water oil pool horizontal well and vertical well exploitation and is applicable to experimental research of rules such as water-driven recovery ratio, distribution of oil remained after water drive, bottom water coning and the like in different exploitation ways at normal temperature and normal pressure; and secondly, the electrode test system determines the quantitative relation between a measuring resistor and a medium to be tested by calibrating electrodes, a standard curve of the resistor and model oil saturation is calculated according to the Archie's formula, and accordingly variation of oil saturation during oil driving by water can be obtained.
Description
Technical field
The utility model relates to the oil-gas field development field, is a kind of experimental physics model that is used to simulate end water low-permeability oil deposit horizontal well, straight well exploitation.
Background technology
At present, worldwide achieving no breakthrough property of development of low-permeability oil reservoir progress, hyposmosis reserves development degree is low, development effectiveness is poor.There are problems such as the water injection well starting pressure is high, injection pressure rises soon, water-intake capacity declines to a great extent, the decline of producing well output is fast in waterflood development of low-permeability reservoirs, and recovery ratio is generally not high; And, not only have the hyposmosis problem in the performance history for end water low-permeability oil deposit, and also there is the bottom water coning phenomenon, this has a strong impact on development effectiveness.In exploitation end water low-permeability oil deposit, the deployed position of selecting development scheme (straight well or horizontal well development), new well of holding water etc., just possibly slow down or avoid developing in outstanding problem, the raising oil recovery obtains bigger economic benefit.
In the related patent U.S. Patent No. at home and abroad, manufacture morely to high saturated model research, the analoging detecting device of Chinese patent document 200520000431.4 oil saturation fields, this model are back-up sand, high saturated model, do not consider the situation of hyposmosis; Do not consider the influence that new well deployed position and different development schemes distribute to oil recovery, remaining oil saturation yet.
Summary of the invention
The utility model problem to be solved is to provide a kind of be used to the simulate straight well of end water low-permeability oil deposit, the physical simulation model of horizontal well development, is used to study rules such as remaining oil distribution after waterflood recovery efficiency factor under the different development schemes, the water drive, bottom water coning.
The utility model is that the technical scheme that problem adopted of the above-mentioned proposition of solution is: include the glued model main body of hyposmosis; Glued model bottom part body of hyposmosis and liquid-accumulating trough link; On the glued model main body of hyposmosis, extraction system and electrode test system are set, liquid-accumulating trough and injected system are joined.
Press such scheme, the rectangular bulk of the glued model main body of described hyposmosis, by the silica sand that mixes, clay and aluminum phosphate through high pressure compression moulding after high-temperature firing form.
Press such scheme, the length of the glued model main body of described hyposmosis is of a size of 28-32cm * 2-4cm * 16-20cm.
Press such scheme, described liquid-accumulating trough is a glass guide channel, and the length and width of glass guide channel is consistent with the length and width of the glued model main body of hyposmosis.
Press such scheme, the glued model main body of described hyposmosis front along about and be evenly equipped with a plurality of electrode pairs up and down, constitute the electrode test system.
Press such scheme, be installed on inlet and dispose valve, constitute injected system in the both sides of liquid-accumulating trough.
Press such scheme, offer lateral aperture, insert pipe and dispose valve, constitute the extraction system in the front and the side of the glued model main body of hyposmosis.
The working mechanism of the utility model is: utilize the obvious reflection that electrical quantity changes oil saturation in the oil reservoir, under the effect of electric field, measure the situation of change of medium electric conductivity and WS outside.Through demarcation, confirm the quantitative relationship between measuring resistance and the measured medium to electrode.By Archie equation calculating formation model WS
R in the formula
t-oil-bearing formation resistivity; R
w-formation water resistivity; A, b-coefficient; M-porosity exponent; N-SEXP; φ-formation porosity.These coefficients and index are by the intrinsic property decision of medium, and available experimental technique is confirmed.In model, arrange the electrode pair of some, just can monitor the variation of oil saturation in the water displacing oil process in real time, make the oil saturation equal-value map.
The beneficial effect of the utility model is: 1, can be used for simulating the physical model of end water low-permeability oil deposit horizontal well, straight well exploitation, be applicable under the normal temperature and pressure rules such as remaining oil distribution, bottom water coning after the waterflood recovery efficiency factor under the different development schemes of experimental study, the water drive; 2, the electrode test system confirms the quantitative relationship between measuring resistance and the measured medium through the demarcation to electrode, calculates the typical curve of resistance and model oil saturation by Archie equation, and then knows the variation of oil saturation in the water displacing oil process.
Description of drawings
Fig. 1 is the front elevation of an embodiment of the utility model.
Embodiment
Further specify the embodiment of the utility model below in conjunction with accompanying drawing.
Include the glued model main body 1 of hyposmosis, the rectangular bulk of the glued model main body of described hyposmosis, length size 30cm * 3cm * 18cm; By the silica sand that mixes, clay and aluminum phosphate through high pressure compression moulding after high-temperature firing form; The weight ratio of silica sand, clay, aluminum phosphate is 50 ~ 80:10 ~ 30:10 ~ 30, goes into mold pressing system, and pressing pressure is 1 ~ 30MPa; Put into high temperature furnace after the press forming demoulding and heat gradually and fire 6 hours, treat that the furnace temperature back that descends takes out cutting.Glued model bottom part body of hyposmosis and liquid-accumulating trough 3 link, and described liquid-accumulating trough is a glass guide channel, are formed by five clear glass bondings, and the glued model bottom part body of glass guide channel top and hyposmosis is integral with the epoxy resin glue bond; On the glued model main body of hyposmosis, extraction system and electrode test system are set; Described extraction system is included in the forward, central part and the top of the glued model main body of hyposmosis and offers transverse horizontal hole 8,9 respectively; Constitute horizontal well punching position, insert pipe and dispose valve, simulation straight well output mouth; Highly locate to offer vertical equity hole 6,7 respectively in 1/2 and 2/3 of a side simultaneously, hole depth is 3/4 of a model modal length, inserts pipe and also disposes valve, Simulated Water horizontal well output mouth.Described electrode test system be the glued model main body of hyposmosis front along about be uniformly distributed with 5 row and be uniformly distributed with 5 electrode pairs 2 under whenever listing, right through rock electric tester connection electrode, the resistance value that potential electrode is right.Described injected system is to be installed on inlet 4,5 in the both sides of glass guide channel respectively and to dispose valve, and two inlets connect formation fluid jar and crude oil fluid tank respectively, injects local water or crude oil to glass guide channel.After above-mentioned extraction system, electrode test system and injected system were processed respectively, with one of epoxy resin glue and the glued model main body bonding of hyposmosis, physical model formed a whole.
Claims (7)
1. the experimental physics model of water development of low-permeability oil reservoir at the bottom of a kind; It is characterized in that including the glued model main body of hyposmosis; Glued model bottom part body of hyposmosis and liquid-accumulating trough link; On the glued model main body of hyposmosis, extraction system and electrode test system are set, liquid-accumulating trough and injected system are joined.
2. the experimental physics model of the end according to claim 1 water development of low-permeability oil reservoir is characterized in that the rectangular bulk of the glued model main body of described hyposmosis.
3. the experimental physics model of the end according to claim 2 water development of low-permeability oil reservoir is characterized in that the length of the glued model main body of described hyposmosis is of a size of 28-32cm * 2-4cm * 16-20cm.
4. according to the experimental physics model of claim 1 or 3 water development of low-permeability oil reservoir of the described end, it is characterized in that described liquid-accumulating trough is a glass guide channel, the length and width of glass guide channel is consistent with the length and width of the glued model main body of hyposmosis.
5. the experimental physics model of the end according to claim 1 and 2 water development of low-permeability oil reservoir, it is characterized in that the glued model main body of described hyposmosis front along about and be evenly equipped with a plurality of electrode pairs up and down, constitute the electrode test system.
6. the experimental physics model of the end according to claim 1 and 2 water development of low-permeability oil reservoir is characterized in that being installed on inlet and disposing valve in the both sides of liquid-accumulating trough, constitutes injected system.
7. the experimental physics model of the end according to claim 1 and 2 water development of low-permeability oil reservoir is characterized in that offering lateral aperture in the front and the side of the glued model main body of hyposmosis, inserts pipe and disposes valve, constitutes the extraction system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204036574U CN202363006U (en) | 2011-10-21 | 2011-10-21 | Experimental physical model for low-permeability bottom water oil pool exploitation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204036574U CN202363006U (en) | 2011-10-21 | 2011-10-21 | Experimental physical model for low-permeability bottom water oil pool exploitation |
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| CN202363006U true CN202363006U (en) | 2012-08-01 |
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| CN2011204036574U Expired - Fee Related CN202363006U (en) | 2011-10-21 | 2011-10-21 | Experimental physical model for low-permeability bottom water oil pool exploitation |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102889975A (en) * | 2012-10-15 | 2013-01-23 | 中国石油天然气股份有限公司长庆油田分公司勘探开发研究院 | Instrument for simulating horizontal microtube bundle of extremely-low permeable oil reservoir |
| CN103247215A (en) * | 2013-04-12 | 2013-08-14 | 中国石油天然气股份有限公司 | Commingling production physical simulation system and method of permeability oil reservoir |
| CN104215619A (en) * | 2014-09-23 | 2014-12-17 | 中国海洋大学 | Seabed oil spilling behavior end result experiment simulation device |
| CN104675394A (en) * | 2015-01-22 | 2015-06-03 | 西南石油大学 | Three-dimensional physical simulation experimental apparatus of heterogeneous bottom-water reservoir and saturation determining method thereof |
| CN106437644A (en) * | 2016-09-14 | 2017-02-22 | 中国石油大学(华东) | Large bottom water sandstone oil reservoir development physical simulation experiment device and working method thereof |
| CN109209358A (en) * | 2018-07-26 | 2019-01-15 | 中国石油大学(华东) | It is a kind of for measuring the experimental provision of heterogeneous reservoir oil saturation |
| CN112814656A (en) * | 2021-03-17 | 2021-05-18 | 成都理工大学 | Large-scale high-temperature high-pressure simulation device and method for bottom water sandstone oil reservoir development |
-
2011
- 2011-10-21 CN CN2011204036574U patent/CN202363006U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102889975A (en) * | 2012-10-15 | 2013-01-23 | 中国石油天然气股份有限公司长庆油田分公司勘探开发研究院 | Instrument for simulating horizontal microtube bundle of extremely-low permeable oil reservoir |
| CN103247215A (en) * | 2013-04-12 | 2013-08-14 | 中国石油天然气股份有限公司 | Commingling production physical simulation system and method of permeability oil reservoir |
| CN104215619A (en) * | 2014-09-23 | 2014-12-17 | 中国海洋大学 | Seabed oil spilling behavior end result experiment simulation device |
| CN104675394A (en) * | 2015-01-22 | 2015-06-03 | 西南石油大学 | Three-dimensional physical simulation experimental apparatus of heterogeneous bottom-water reservoir and saturation determining method thereof |
| CN104675394B (en) * | 2015-01-22 | 2018-01-12 | 西南石油大学 | Heterogeneous bottom-water reservoir three-dimensional physical simulation experimental provision and saturation degree determine method |
| CN106437644A (en) * | 2016-09-14 | 2017-02-22 | 中国石油大学(华东) | Large bottom water sandstone oil reservoir development physical simulation experiment device and working method thereof |
| CN106437644B (en) * | 2016-09-14 | 2019-07-09 | 中国石油大学(华东) | Outsole water sandstone oil reservoir develops physical simulation experiment device and its working method |
| CN109209358A (en) * | 2018-07-26 | 2019-01-15 | 中国石油大学(华东) | It is a kind of for measuring the experimental provision of heterogeneous reservoir oil saturation |
| CN112814656A (en) * | 2021-03-17 | 2021-05-18 | 成都理工大学 | Large-scale high-temperature high-pressure simulation device and method for bottom water sandstone oil reservoir development |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20151021 |
|
| EXPY | Termination of patent right or utility model |