CN104948178A - Oil field heavy oil reservoir recognition and evaluation method - Google Patents
Oil field heavy oil reservoir recognition and evaluation method Download PDFInfo
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- CN104948178A CN104948178A CN201510295097.8A CN201510295097A CN104948178A CN 104948178 A CN104948178 A CN 104948178A CN 201510295097 A CN201510295097 A CN 201510295097A CN 104948178 A CN104948178 A CN 104948178A
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Abstract
The invention relates to an oil field heavy oil reservoir recognition and evaluation method. The oil field heavy oil reservoir recognition and evaluation method includes the following steps that firstly, oiliness is determined; secondly, lithology is determined; thirdly, the physical property is determined; fourthly, the relation between the heavy oil density and the heavy oil viscosity is determined; fifthly, the oil saturation, the heavy oil density and the heavy oil viscosity of heavy oil are calculated; sixthly, a heavy oil reservoir is recognized and evaluated. By the adoption of the oil field heavy oil reservoir recognition and evaluation method, on the basis of research on the relation among the lithology, the physical property and the oiliness of the reservoir and according to a large number of well testing and testing data, a set of parameter models and explanation standards suitable for heavy oil reservoir recognition and evaluation are established, and accurate data are provided for exploration and development of heavy oil blocks.
Description
Technical field
The present invention relates to a kind of oil-field thick-oil oil reservoir identification and evaluation method.
Background technology
Oil-field thick-oil is mainly distributed in slope or abrupt slope one band, and this band is generally the loose sand of fluvial facies deposit, mature fault, and oil reservoir buries shallow, and viscous crude oil is complicated, and multiple viscous crude all has growth, and in plane, genesis analysis is complicated.In reality exploration, development process, accurately must identify that the type of heavy crude reservoir could formulate the technological measure of formation testing, exploitation, and adopt which kind of method to identify it is also the current large problem studied accurately to heavy crude reservoir.
Summary of the invention
The technical problem to be solved in the present invention is: in order to overcome the deficiencies in the prior art, provides a kind of oil-field thick-oil oil reservoir identification and evaluation method.
The technical solution adopted for the present invention to solve the technical problems is: a kind of oil-field thick-oil oil reservoir identification and evaluation method, comprises the following steps:
1) oiliness is determined: according to Information integration determination oiliness lower limits such as rock core, formation testing, well loggings;
2) lithology is determined: according to analysis sample and core observation statistics, determine that rock core lower limit is packsand;
3) determine physical property: according to rock core field data, determine that reservoir physical property lower limit degree of porosity is 20%, permeability is 0.16 μm
2;
4) viscous crude density and viscosity relationship is determined: according to formula: μ=2E-14e
39.622dcalculate the relation of viscous crude density and viscosity;
5) calculating of viscous crude oil saturation, viscous crude density, viscosity of thickened oil:
5.1) based on the volume of oil and the relation of rock porosity, formula is adopted:
S
od=2.3*K* (S
0+ S
1Φ e*)/[(1.0694-0.2948*TPI) * 1000] * 100% oil saturation calculating viscous crude, wherein S
odfor viscous crude oil saturation, K is Hydrocarbon Recovering Coefficient, and Φ e is effecive porosity, and TPI is rock pyrolysis analysis parameter;
5.2) viscous crude density is calculated according to formula d=-0.2948TPI+1.0691;
5.3) according to formula μ=0.5938TPI
-7.1646calculate viscous crude density;
6) heavy crude reservoir identification and evaluation:
6.1) set up oil, water layer criteria for interpretation: according to oil saturation, comprehensive lithology and physical property factor, set up oil, water layer criteria for interpretation;
6.2) viscous oil type density evaluation criterion is formulated: according to formation testing, original analysis of data of going into operation research, make viscous oil type density evaluation criterion;
6.3) viscous oil type viscosity evaluation criterion is formulated: according to formation testing, original analysis of data of going into operation research, make viscous oil type viscosity evaluation criterion;
6.4) according to above three kinds of standard implementations to the identification and evaluation of heavy crude reservoir, heavy crude reservoir is divided into common heavy oil I, common heavy oil II and super―heavy oil three kinds.
As preferably, step 1) in, mainly comprise saturated oils from heavy crude reservoir drilling and coring delivery and sieve residue log oil/gas show, be rich in oil, oil immersion, oil mark, oil stain and fluorescence six ranks, comprehensive study identification, oiliness lower limit is oil mark level, and oil saturation is 30%.
As preferably, step 2) in, the lithology of the clastic in sample is divided into granule rock, psephitic sandstone, gritstone, middle sandstone, siltstone, argillaceous siltstoue, grey mud stone, shale and Sandy Silt to press from both sides oil shale, and the oiliness wherein between packsand and siltstone and oil-bearing occurrence change are obviously.
The invention has the beneficial effects as follows, this oil-field thick-oil oil reservoir identification and evaluation method is on the basis of Study In Reservoir lithology, physical property, oiliness relation, according to a large amount of formation testing and test data, establish parameter model and the criteria for interpretation of a set of adaptation heavy crude reservoir identification and evaluation, the exploration and development for heavy oil block provides data comparatively accurately.
Detailed description of the invention
A kind of oil-field thick-oil oil reservoir identification and evaluation method, comprises the following steps:
1) oiliness is determined: according to Information integration determination oiliness lower limits such as rock core, formation testing, well loggings;
2) lithology is determined: according to analysis sample and core observation statistics, determine that rock core lower limit is packsand;
3) determine physical property: according to rock core field data, determine that reservoir physical property lower limit degree of porosity is 20%, permeability is 0.16 μm
2;
4) viscous crude density and viscosity relationship is determined: according to formula: μ=2E-14e
39.622dcalculate the relation of viscous crude density and viscosity;
5) calculating of viscous crude oil saturation, viscous crude density, viscosity of thickened oil:
5.1) based on the volume of oil and the relation of rock porosity, formula is adopted:
S
od=2.3*K* (S
0+ S
1Φ e*)/[(1.0694-0.2948*TPI) * 1000] * 100% oil saturation calculating viscous crude, wherein S
odfor viscous crude oil saturation, K is Hydrocarbon Recovering Coefficient, and Φ e is effecive porosity, and TPI is rock pyrolysis analysis parameter;
5.2) viscous crude density is calculated according to formula d=-0.2948TPI+1.0691;
5.3) according to formula μ=0.5938TPI
-7.1646calculate viscous crude density;
6) heavy crude reservoir identification and evaluation:
6.1) set up oil, water layer criteria for interpretation: according to oil saturation, comprehensive lithology and physical property factor, set up oil, water layer criteria for interpretation;
6.2) viscous oil type density evaluation criterion is formulated: according to formation testing, original analysis of data of going into operation research, make viscous oil type density evaluation criterion;
6.3) viscous oil type viscosity evaluation criterion is formulated: according to formation testing, original analysis of data of going into operation research, make viscous oil type viscosity evaluation criterion;
6.4) according to above three kinds of standard implementations to the identification and evaluation of heavy crude reservoir, heavy crude reservoir is divided into common heavy oil I, common heavy oil II and super―heavy oil three kinds.
As preferably, step 1) in, mainly comprise saturated oils from heavy crude reservoir drilling and coring delivery and sieve residue log oil/gas show, be rich in oil, oil immersion, oil mark, oil stain and fluorescence six ranks, comprehensive study identification, oiliness lower limit is oil mark level, and oil saturation is 30%.
As preferably, step 2) in, the lithology of the clastic in sample is divided into granule rock, psephitic sandstone, gritstone, middle sandstone, siltstone, argillaceous siltstoue, grey mud stone, shale and Sandy Silt to press from both sides oil shale, and the oiliness wherein between packsand and siltstone and oil-bearing occurrence change are obviously.
Compared with prior art, this oil-field thick-oil oil reservoir identification and evaluation method is on the basis of Study In Reservoir lithology, physical property, oiliness relation, according to a large amount of formation testing and test data, establish parameter model and the criteria for interpretation of a set of adaptation heavy crude reservoir identification and evaluation, the exploration and development for heavy oil block provides data comparatively accurately.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on manual, must determine its technical scope according to right.
Claims (3)
1. an oil-field thick-oil oil reservoir identification and evaluation method, is characterized in that, comprise the following steps:
1) oiliness is determined: according to Information integration determination oiliness lower limits such as rock core, formation testing, well loggings;
2) lithology is determined: according to analysis sample and core observation statistics, determine that rock core lower limit is packsand;
3) determine physical property: according to rock core field data, determine that reservoir physical property lower limit degree of porosity is 20%, permeability is 0.16 μm
2;
4) viscous crude density and viscosity relationship is determined: according to formula: μ=2E-14e
39.622dcalculate the relation of viscous crude density and viscosity;
5) calculating of viscous crude oil saturation, viscous crude density, viscosity of thickened oil:
5.1) based on the volume of oil and the relation of rock porosity, formula is adopted:
S
od=2.3*K* (S
0+ S
1Φ e*)/[(1.0694-0.2948*TPI) * 1000] * 100% oil saturation calculating viscous crude, wherein S
odfor viscous crude oil saturation, K is Hydrocarbon Recovering Coefficient, and Φ e is effecive porosity, and TPI is rock pyrolysis analysis parameter;
5.2) viscous crude density is calculated according to formula d=-0.2948TPI+1.0691;
5.3) according to formula μ=0.5938TPI
-7.1646calculate viscous crude density;
6) heavy crude reservoir identification and evaluation:
6.1) set up oil, water layer criteria for interpretation: according to oil saturation, comprehensive lithology and physical property factor, set up oil, water layer criteria for interpretation;
6.2) viscous oil type density evaluation criterion is formulated: according to formation testing, original analysis of data of going into operation research, make viscous oil type density evaluation criterion;
6.3) viscous oil type viscosity evaluation criterion is formulated: according to formation testing, original analysis of data of going into operation research, make viscous oil type viscosity evaluation criterion;
6.4) according to above three kinds of standard implementations to the identification and evaluation of heavy crude reservoir, heavy crude reservoir is divided into common heavy oil I, common heavy oil II and super―heavy oil three kinds.
2. oil-field thick-oil oil reservoir identification and evaluation method as claimed in claim 1, it is characterized in that, step 1) in, mainly comprise saturated oils from heavy crude reservoir drilling and coring delivery and sieve residue log oil/gas show, be rich in oil, oil immersion, oil mark, oil stain and fluorescence six ranks, comprehensive study is assert, oiliness lower limit is oil mark level, and oil saturation is 30%.
3. oil-field thick-oil oil reservoir identification and evaluation method as claimed in claim 1, it is characterized in that, step 2) in, the lithology of the clastic in sample is divided into granule rock, psephitic sandstone, gritstone, middle sandstone, siltstone, argillaceous siltstoue, grey mud stone, shale and Sandy Silt to press from both sides oil shale, and the oiliness wherein between packsand and siltstone and oil-bearing occurrence change are obviously.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863625A (en) * | 2016-04-27 | 2016-08-17 | 中国石油天然气股份有限公司 | Quinary-coefficient classification evaluating method for tight oil reservoir |
| CN109882162A (en) * | 2019-03-20 | 2019-06-14 | 中国石油化工股份有限公司 | Basin cause gas trace back oil heavy crude reservoir exploitation method |
| CN110748334A (en) * | 2019-09-04 | 2020-02-04 | 中国石油化工股份有限公司 | Method for predicting favorable area of shale oil and continuous oil reservoir exploration |
| CN114518443A (en) * | 2020-11-20 | 2022-05-20 | 中国石油化工股份有限公司 | Method for evaluating stability of thick oil colloid |
| CN114518443B (en) * | 2020-11-20 | 2024-05-10 | 中国石油化工股份有限公司 | Method for evaluating stability of thickened oil colloid |
-
2015
- 2015-06-02 CN CN201510295097.8A patent/CN104948178A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 韩宏恩: "河南油田稠油油藏识别评价方法", 《四川地质学报》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105863625A (en) * | 2016-04-27 | 2016-08-17 | 中国石油天然气股份有限公司 | Quinary-coefficient classification evaluating method for tight oil reservoir |
| CN105863625B (en) * | 2016-04-27 | 2020-02-14 | 中国石油天然气股份有限公司 | Compact oil reservoir five-element coefficient classification evaluation method |
| CN109882162A (en) * | 2019-03-20 | 2019-06-14 | 中国石油化工股份有限公司 | Basin cause gas trace back oil heavy crude reservoir exploitation method |
| CN109882162B (en) * | 2019-03-20 | 2022-10-14 | 中国石油化工股份有限公司 | Heavy oil reservoir exploration method by tracing oil through gas at basin edge |
| CN110748334A (en) * | 2019-09-04 | 2020-02-04 | 中国石油化工股份有限公司 | Method for predicting favorable area of shale oil and continuous oil reservoir exploration |
| CN114518443A (en) * | 2020-11-20 | 2022-05-20 | 中国石油化工股份有限公司 | Method for evaluating stability of thick oil colloid |
| CN114518443B (en) * | 2020-11-20 | 2024-05-10 | 中国石油化工股份有限公司 | Method for evaluating stability of thickened oil colloid |
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