CN101221112B - Method for testing residual oil viscosity of oil accumulation - Google Patents
Method for testing residual oil viscosity of oil accumulation Download PDFInfo
- Publication number
- CN101221112B CN101221112B CN200810056582XA CN200810056582A CN101221112B CN 101221112 B CN101221112 B CN 101221112B CN 200810056582X A CN200810056582X A CN 200810056582XA CN 200810056582 A CN200810056582 A CN 200810056582A CN 101221112 B CN101221112 B CN 101221112B
- Authority
- CN
- China
- Prior art keywords
- oil
- viscosity
- crude
- remaining
- crude oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
- Lubricants (AREA)
Abstract
The invention discloses a method for testing the viscosity of the residual oil in an oil pool. The method utilizes the relativity between the crude oil viscosity and the relative content of C40<+> macromolecular compound in the crude oil to build a relation formula between the crude oil viscosity and the relative content of the C40<+> macromolecular compound as well as calculate and acquire the viscosity of the residual oil in a sample. The invention carries out authenticate method by taking the viscosity of the residual oil in the samples of the Sarthou Oilfield and the Xingshugang Oilfield at the north part of the Song-Liao Basin. The method for testing the viscosity of the residual oil in an oil pool of the invention creates a novel method for testing the viscosity of the residual oil in an oil pool and has important significances on recognizing the geochemistry characteristics of the residual oil in an oil pool, the heterogeneity for the crude oil of different oil pools and the viscosity of the residual oil, indicating a secondary oil extinction and a third oil extraction of the oilfield and improving the recovery ratio of the crude oil.
Description
Technical field
The present invention relates to the crude oil development field, be specifically related to method of testing residual oil viscosity of oil accumulation.
Background technology
The size of reservoir crude oil production capacity and the character and the viscosity of crude oil are closely related, under identical reservoir conditions, and the reservoir productivity height that the reservoir that viscosity of crude is low is higher than viscosity of crude; Having high-molecular weight compounds precipitation or crystallization in the oil reservoir is to influence one of major reason of oil reservoir exploitation, and therefore, crude oil mobility ratio in exploratory development (k/ μ) is an important indicator of paying close attention to.Especially in water drive, poly-drive, secondary, the oil well of tertiary oil recovery and the middle and later periods of oil-field development such as ternary composite driving, the size of remaining oil viscosity is very important to formulating development plan.Conventional viscosity of crude assay method (GB265-1988), the crude oil sample that adopts comes out by oil mining from subsurface deposit, some high viscosity oil and remaining oil in the subsurface deposit may not have extraction ground, should there be difference in extraction crude oil and underground remaining oil, therefore, the mobility ratio of application reservoir permeability and extraction viscosity of crude calculating is not the true reflection of subsurface deposit.And remaining crude oil (remaining oil) can't obtain in the oil-sand usually because of being stored in the oil reservoir, also just can't measure remaining oil viscosity.
There are bibliographical information crude oil wax PRECIPITATION MECHANISM and high molecular weight alkane that crude oil property is had appreciable impact, referring to external Nguyen X T, Hsieh M, Philp R P.Waxes and asphaltenes in crude oils.Org.Geochem., 1999,30 (2/3): 119～132, Boukadi A, Philp R P, Thanh N X.Characterization of paraffinic deposits in crude oil storage tanks using hightemperature gas chromatography.Applied Geochemistry, 2005,20 (10): 1974～1983. etc.; Domestic Feng Zi brightness, Fang Wei, Zhang Ju and etc. (high molecular (C40 in the hydrocarbon source rock of loose distant basin
+) alkane series forms and distribution characteristics, Chinese science D collects, 2007 the 9th phases) pointed out crude oil high molecular (C
40 +) alkane relative content appreciable impact viscosity of crude, still, above-mentioned research all can not solve remaining oil viscosimetric analysis problem in the oil reservoir.
Summary of the invention
The purpose of this invention is to provide a kind of method that can measure residual oil viscosity of oil accumulation.
The method of residual oil viscosity of oil accumulation provided by the invention comprises following steps:
1) oil-sand of collection crude oil and core hole, extracting organic component wherein is as crude oil test sample and remaining oil test sample respectively;
2) with the hydrocarbon composition data in high temperature gas chromatography analytical approach detection crude oil sample and the remaining oil sample;
3) obtain physical datas such as viscosity of crude, density, solidifying point, wax content, bituminous matter;
4) utilize step 2) crude oil property data that the crude oil hydrocarbon composition that obtains and step 3) obtain, do viscosity of crude and other rerum natura and hydrocarbon composition correlation analysis, determine the major control factor and the relational expression thereof of viscosity of crude;
5) utilize step 2) the hydrocarbon composition data of the oil reservoir remaining oil that obtains, viscosity of crude and major control factor relation formula that the substitution step 4) is established calculate remaining oil viscosity.
The method of the above residual oil viscosity of oil accumulation test, described step 1) test sample adopts following preparation process: take by weighing oil-sand or crude oil after the pulverizing, pack in the filtration paper cylinder, place in the extracting post of full-automatic multi-functional extracting instrument, with 93: 7 chloroform of volume ratio: the methanol reagent extracting, extracting 8h in 85 ℃ water bath with thermostatic control is transferred in the measuring cup, 40 ℃ of constant temperature, concentrate, constant weight, obtain oil reservoir remaining oil test sample or crude oil test sample.
Wherein, step 2) the hydrocarbon composition data of high temperature gas chromatography analytical approach acquisition are low equimolecular quantity C
21 -, intermediate molecular weight C
21-C
40, high molecular C
40 +Compound relative content data.
Wherein, the major control factor of the described viscosity of crude of step 3) is C in the crude oil
40 +The high-molecular weight compounds relative content.
Wherein, described viscosity of crude of step 4) and major control factor relation formula are C in viscosity of crude and the crude oil
40 +The relational expression of high-molecular weight compounds relative content (x), promptly residual oil viscosity of oil accumulation (y) computing formula is
y＝0.5569x
2-1.3021x+9.1435。
Wherein, the hydrocarbon composition data of the oil reservoir remaining oil of the described relational expression of step 5) substitution are step 2) the remaining oil sample C that obtains
40 +The high-molecular weight compounds relative content.
The method of the above residual oil viscosity of oil accumulation test, the described correlation analysis of step 4) adopts Microsoftoffice Excel common software, with the best index of related coefficient as described major control factor.
The present invention adopts above scheme, utilize the preparation method and the high temperature gas chromatography analytical approach of oil reservoir remaining oil and crude oil, calculate and obtain remaining oil viscosity, started the new method of residual oil viscosity of oil accumulation test, nonuniformity for Geochemical Characteristics, different oil reservoir crude oil and the remaining oil viscosity thereof of understanding oil reservoir remaining oil instructs the oil field secondary, that tertiary oil recovery improves oil recovery factor is significant.
Description of drawings
Fig. 1 is Cretacic stratum, a loose distant basin composite columnar section;
Fig. 2 is crude oil and the qualitative spectrogram of remaining oil high temperature stratographic analysis;
Fig. 3 is viscosity of crude and oil density correlation figure;
Fig. 4 is viscosity of crude and former oil freezing point correlation figure;
Fig. 5 is viscosity of crude and wax content in crude oil correlation figure;
Fig. 6 is viscosity of crude and crude oil asphalt content correlation figure;
Fig. 7 is viscosity of crude and crude oil C
21 -The relative content correlation figure;
Fig. 8 is viscosity of crude and crude oil C
21-C
40The relative content correlation figure;
Fig. 9 is viscosity of crude and crude oil C
40 +The relative content correlation figure;
Figure 10 is middle 44-inspection P204 well different reservoir remaining oil high temperature chromatogram.
Embodiment
The present invention has mainly proposed the assay method of residual oil viscosity of oil accumulation.Remaining oil is that the still storage of not extraction is the crude oil in the subsurface deposit, so remaining oil has relevant physicochemical characteristics (rerum natura) with extraction crude oil; By oil reservoir remaining oil sample and crude oil sample are carried out the high temperature gas chromatography analysis respectively, according to major control factor and the relational expression thereof of the analysis result of crude oil sample being determined viscosity of crude, utilize this relational expression again and the analysis data computation of remaining oil sample is obtained remaining oil viscosity.
Below describe the present invention in detail from several respects.
One, the preparation of oil reservoir remaining oil sample and crude oil sample and high temperature gas chromatography analysis
1, the preparation method of oil reservoir remaining oil sample and crude oil sample
Crude oil: directly take from oil well produced crude oil;
Remaining oil: refer to adopt different oil production methods (as water drive or polymer flooding etc.) not extraction still be stored in crude oil in the subsurface deposit, the oil-sand that takes out by core hole obtains remaining oil, remaining oil is stored in the oil-sand;
Test sample preparation: take by weighing 50g oil-sand or crude oil respectively, oil-sand is pulverized in the filtration paper cylinder of packing into after (crude oil need not pulverized), place in the extracting post of full-automatic multi-functional extracting instrument, use chloroform: methyl alcohol (93: 7, V/V) 250mL extracting sample, extracting 8h in 85 ℃ water bath with thermostatic control is transferred in the measuring cup, constant temperature (40 ℃) concentrates, constant weight, obtains remaining oil sample and crude oil sample respectively and is used for the high temperature gas chromatography analysis.
2, remaining oil sample and crude oil sample high temperature gas chromatography analytical approach
Adopt U.S. HP6890PLus gas chromatograph and chem workstation; 25m * 0.32mm * 0.1 μ m high temperature capillary chromatographic column, 390 ℃ of injector temperatures, pulse is split sampling not; 420 ℃ of detecting device FID temperature, detecting device make-up gas are high-purity helium; Carrier gas is high-purity helium, and the post flow is 1ml/min; Combustion gas is a hydrogen, and flow is 45ml/min; Combustion-supporting gas is air, and flow is 450ml/min.The capillary column heating schedule: 50 ℃ of initial temperature, permanent 1min is raised to 400 ℃ with 10 ℃/min heating rate, and constant temperature all flows out to component.Crude oil sample and remaining oil sample are measured respectively, obtained hydrocarbon composition detection data separately, and statistics C
21 -, C
21-C
40, C
40 +The relative content (%) of forming compound.
Adopt C
28And C
54Standard specimen and relevant document (Feng Zihui, Fang Wei, Zhang Ju and etc.: high molecular (C40 in the hydrocarbon source rock of loose distant basin
+) alkane series composition and distribution characteristics, Chinese science D collects, 2007 the 9th phases) qualitative.
3, definite method of viscosity of crude major control factor and relational expression thereof
The rerum natura of crude oil mainly contains viscosity of crude, density, solidifying point, wax content, bituminous matter etc., and these physical parameters record or detect data by the crude oil property that inquiry is put down in writing by existing method and obtain; The high temperature chromatogram hydro carbons of crude oil is mainly by C
21 -, C
21-C
40, C
40 +Form.Utilize viscosity of crude and other rerum natura and crude oil hydrocarbon composition to detect data and do correlation analysis (as adopting Microsoft office Excel 2003 softwares, common software), determine the major control factor and the relational expression thereof of viscosity of crude according to the numerical value of correlativity.
4, the computing method of residual oil viscosity of oil accumulation
The relational expression of based on crude viscosity and major control factor will detect data substitution relational expression and calculate residual oil viscosity of oil accumulation to the hydrocarbon composition of remaining oil sample.
Two, the specific embodiment of the inventive method
Below be the implementation process of example explanation the inventive method with the northern crude oil in the distant basin of pine and Sa Ertu oil field and oil field, apricot hilllock remaining oil.
1, geologic background and laboratory sample
The distant basin of pine is positioned at northeast China, is the terrestrial facies petroliferous basin of the present maximum of having found in the world.Northern upper Cretaceous series has been grown favourable life, storage, lid combination (Fig. 1) in the distant basin of pine, blue or green one section, blue or green two+three sections, tender one section and tender two sections totally 4 cover hydrocarbon source rocks have mainly been formed, hydrocarbon source rock abundance of organic matter height, matrix type are good, based on I, II type is the sapropel type, for black Supreme Being mausoleum (H), Sa Ertu (S), grape flower (P), high estrade (G), Fuyu County (F), Yang Dacheng (y) 6 cover oil bearing reservoir provide sufficient oil gas.Choose and gather northern 6 cover 21 of the crude oil of oil bearing reservoir (referring to 20 mouthfuls of listed oil wells of table 2) in loose distant basin, 30 of the oil sands sample (referring to 3 mouthfuls of listed core holes of table 3) of the Sa Ertu of 3 mouthfuls of oil-field development coring inspection chamber of Sa Ertu and oil field, apricot hilllock, grape flower, high estrade 3 cover main force pay sands.
In this example, crude oil sample and oil sands sample are mainly considered samples' representativeness not in a bite well or area.Getting the crude oil sample analysis mainly is to determine viscosity of crude and its hydrocarbon composition C
21 -, C
21～C
0, C
40 +Relation (%) is seen the hydrocarbon composition C of crude oil from the actual analysis data
21 -, C
21～C
40, C
40 +(%) and the oil well at crude oil property parameter value and its place, oil bearing reservoir position and area do not have tangible corresponding relation.On the other hand, be difficult to get 6 crude oil with different viscosities value and the oil sands sample of overlapping oil bearing reservoir at a bite well or areal, also do viscosity of crude Dominated Factors and correlation analysis with regard to difficulty, and, have applicability and cogency widely by northern different regions, loose distant basin and the oil well 6 cover determined viscosity of crude of reservoir crude oil and its hydrocarbon composition relation and relational expression.
2, test result and discussion
2.1 repeated experiment
Oil sands sample or crude oil sample be prepared with high temperature chromatogram repeated experiment (promptly an oil-sand or crude oil repeated sample preparation, detection, relatively detect data then), the repeatability analysis result shows sample analysis component unanimity, good reproducibility: the relative deviation of n-alkane massfraction scope 0.50%～1.00%, 1.00%～5.00%, 5.00%～10.00% is respectively less than 15.00%, less than 10.00%, less than 5.00%.List the detection data that middle 44-examines P204 well 972.72m remaining oil sample as table 1, show that the maximum relative deviation of the n-alkane massfraction that repeatability is analyzed is 10.81%, minimum relative deviation is 1.07%, the illustrative experiment good reproducibility.
Table 1 oil reservoir remaining oil high temperature chromatogram repeated experiment correlation data
2.2 the viscosity of crude Dominated Factors is analyzed
Viscosity of crude, density, solidifying point, wax content, bituminous matter, the high temperature chromatogram testing result of 21 crude oil samples of the northern 6 cover oil reservoirs in the distant basin of pine are listed in table 2, therefrom as can be seen, the viscosity change scope of black Supreme Being mausoleum, Sa Ertu, grape flower, high estrade, Fuyu County, Yang Dacheng seed oil layer crude oil is 8.10～107.00mPa.S, and that wherein starts 23 Hei Dimiao, golden 24 Sa Ertu, tree 141 poplar big city seed oil layer crude oil is respectively 107.00mPa.S, 68.50mPa.S, 55.60mPa.S; The variation range of density is 0.8318～0.8987g/cm
3, the variation range of solidifying point is 29～42 ℃, and the variation range of wax content is 18.8～34.2%, and bitum variation range is 0.6～7.7%; C
21 -Variation range be 23.21～70.32%, C
21-C
40Variation range be 27.31～67.71%, C
40 +Variation range be 0.63～14.80%.As seen, the hydrocarbon composition C of crude oil
21 -, C
21～C
40, C
40 +(%) and the oil bearing reservoir position at crude oil property parameter value and its place and area do not have tangible corresponding relation.
Table 2 loose distant basin crude oil property and high temperature chromatogram analysis data
2.2.1 the relation of viscosity of crude and crude oil property
Viscosity of crude is done correlation analysis with density (referring to Fig. 3), solidifying point (referring to Fig. 4), wax content (referring to Fig. 5), the bituminous matter (referring to Fig. 6) of crude oil respectively, correlation coefficient r is respectively 0.7631,0.3422,0.6100,0.1517 as a result, as seen, the correlativity of the density of viscosity of crude and crude oil is good, with wax content better, poor with solidifying point is with bitum the poorest.
2.2.2 the relation of viscosity of crude and crude oil hydrocarbon composition
With viscosity of crude respectively with the hydrocarbon composition C of crude oil
21 -, C
21-C
40, C
40 +Do correlation analysis (referring to 7, Fig. 8, Fig. 9), correlation coefficient r is respectively 0.7009,0.4645,0.9557, as seen, the correlativity of the low equimolecular quantity hydrocarbon compound of viscosity of crude and crude oil is good, poor with the correlativity of the intermediate molecular weight hydrocarbon compound of crude oil, best with the correlativity of the high-molecular-weight hydrocarbons compounds of crude oil.
As seen, the relative content of high-molecular weight compounds is the major influence factors of viscosity of crude in the crude oil hydrocarbon composition.This mainly is that the relative content of high-molecular weight compounds becomes the major control factor of viscosity of crude in the crude oil hydrocarbon composition because the molecular weight of high-molecular-weight hydrocarbons compounds greatly in the crude oil, big, the internal friction of the glutinousness that flows greatly, relatively of attractive force, obstruction power are big each other.
2.3 the hydrocarbon composition of different oil reservoir remaining oils and chromatogram characteristic
2.3.1 the hydrocarbon composition feature of different oil reservoir remaining oils
Get 30 oil-sands from 3 mouthfuls of core holes, the remaining oil hydrocarbon composition testing result of mensuration is listed in table 3, and wherein, middle 44-inspection P204 well removes the C of 877.66m remaining oil
21 -, C
21-C
40, C
40 +Be respectively 9.96%, 18.98%, 71.06%, the C of other remaining oil
21 -Variation range be 18.85～30.03%, C
21-C
40Variation range be 39.23～67.66%, C
40 +Variation range be 6.90～35.69%; The C of apricot 1-4-inspection P42 well remaining oil
21 -Variation range be 22.39～29.10%, C
21-C
40Variation range be 63.04～68.17%, C
40 +Variation range be 3.43～13.69%; The C of the flat 35 well remaining oils of apricot 6-1-
21 -Variation range be 21.73～45.60%, C
21-C
40Variation range be 50.91～73.38%, C
40 +Variation range be 3.49～13.54%.This shows, the hydrocarbon composition difference of different wells, same well different reservoir remaining oil, every mouthful of different oil reservoir remaining oils of well show nonuniformity.
2.3.2 the hydro carbons high temperature chromatogram characteristic of different oil reservoir remaining oils
The high temperature chromatogram spectrogram different characteristic of same well different reservoir remaining oil is organized 818.96m remaining oil carbon number range from C as middle 44-inspection P204 well (referring to Figure 10) So
14～C
63, distributing is bimodal pattern, preceding main peak group main peak carbon nC
23, back main peak group main peak carbon nC
47, at nC
30～nC
37Between the lower C of abundance is arranged
29～C
35Hopance series of biologic tagged compound; At nC
40The low isoparaffin series of abundance, alkyl cyclohexane series compound, alkyl cyclopentane series compound appear after the n-alkane.
SII group 877.66m remaining oil carbon number range is from C
11～C
64, distributing is bimodal pattern, preceding main peak group main peak carbon nC
23, back main peak group main peak carbon nC
47, and afterwards the main peak group is the main body ingredient, different with the spectrogram of other remaining oil; At nC
30～nC
37Between the very low C of abundance is arranged
29～C
35Hopance series of biologic tagged compound; At nC
40The very low isoparaffin series of abundance, alkyl cyclohexane series compound, alkyl cyclopentane series compound appear after the n-alkane.
SII group 901.40m remaining oil carbon number range is from C
11～C
64, distributing is single peak type, main peak carbon nC
23, at nC
30～nC
37Between the very high C of abundance is arranged
29～C
35Hopance series of biologic tagged compound; At nC
40The very high isoparaffin series of abundance, alkyl cyclohexane series compound, alkyl cyclopentane series compound appear after the n-alkane.
PI group 972.72m remaining oil carbon number range is from C
11～C
64, distributing is single peak type, main peak carbon nC
23, at nC
30～nC
37Between the very high C of abundance is arranged
29～C
35Hopance series of biologic tagged compound; At nC
40The very high isoparaffin series of abundance, alkyl cyclohexane series compound, alkyl cyclopentane series compound appear after the n-alkane.
The hydrocarbon composition of table 3 oil reservoir remaining oil is analyzed data
GII group 1110.73m remaining oil carbon number range is from C
13～C
66, distributing is single peak type, main peak carbon nC
23, at nC
30～nC
37Between the low C of abundance is arranged
29～C
35Hopance series of biologic tagged compound; At nC
40The lower isoparaffin series of abundance, alkyl cyclohexane series compound, alkyl cyclopentane series compound appear after the n-alkane.
Black Supreme Being mausoleum crude oil is mainly derived from tender one section and tender two sections hydrocarbon source rocks, Sa Ertu, grape flower, high estrade are mainly derived from blue or green one section of crude oil, two+three sections of green grass or young crops, the oil reservoir remaining oil is influenced by reservoir environment, oil recovery degree etc. also except that being subjected to nature of source rocks control, presents different features.
2.4 residual oil viscosity of oil accumulation and feature
2.4.1 the calculating of residual oil viscosity of oil accumulation
C in the crude oil
40 +The high-molecular weight compounds relative content is the major control factor (referring to the experiment of 2.2.2) of viscosity of crude, and its related coefficient reaches 0.9557 (R among the figure
2Be 0.9133, its extraction of square root is for correlation coefficient r=0.9557), therefore can utilize the viscosity of crude (y) and the C of acquisition
40 +The relational expression of high-molecular weight compounds relative content (x):
y＝0.5569x
2-1.3021x+9.1435 (1)
The C that the remaining oil sample detection is obtained
40 +Calculate the remaining oil viscosity data in high-molecular weight compounds numerical value (referring to table 3) the substitution relational expression (1).The result is referring to table 4 for the remaining oil viscosity calculations.
2.4.2 residual oil viscosity of oil accumulation feature
The remaining oil viscosity of 44-inspection P204 well (table 4) is between 26.67～2728.70mPa.S in the Sa Ertu oil field, oil field, apricot hilllock apricot 1-4-inspection P42 well remaining oil between 11.23～95.69mPa.S, the flat 35 well remaining oils of oil field, apricot hilllock apricot 6-1-between 11.38～93.61mPa.S.As seen, different wells and oil field, the different oil reservoir remaining oil of same well viscosity present nonuniformity.
2.4.3 residual oil viscosity of oil accumulation and extraction crude oil change contrast
12 mouthfuls of oil wells such as oil field, apricot hilllock apricot 66, apricot 72, apricot 12-4-34 well (1989～1999 13 Sa Ertu, Putaohua reservoir crude oil sample) viscosity of crude is between 11.60～27.60mPa.S, average out to 17.52mPa.S; Now, oil field, apricot hilllock remaining oil viscosity (table 4) is between 11.23～95.69mPa.S, average out to 42.76mPa.S.
5 mouthfuls of oil wells (1999～2002 11 Sa Ertu oil reservoir crude oil samples) viscosity of crude such as 90-inspection 252, middle 82-246 well are between 16.20～30.11mPa.S, average out to 19.83mPa.S in the Sa Ertu oil field; Now, Sa Ertu oil field remaining oil viscosity (table 4) except that 877.66m between 26.67～672.04mPa.S, average out to 187.98mPa.S.In sum, along with the raising of oil extraction time and recovery percent, remaining oil viscosity presents the trend of increase than the extraction oil viscosity.
Table 4 residual oil viscosity of oil accumulation determination data
More than understand specifically that by example the present invention carries out the overall process that residual oil viscosity of oil accumulation is measured, the exploitation that the result that this method records can be used to the assay remaining oil utilizes prospect.The present invention has following characteristics:
(1) proposes and set up the residual oil viscosity of oil accumulation assay method in the world first, utilize the 3 mouthful oil well applications of this method in the Sa Ertu oil field and the oil field, apricot hilllock in the north, the distant basin of pine, measure 30 oil bearing reservoir residue oil viscosities, filled up world's blank in this field.
(2) experimental study shows, the correlativity of the density of viscosity of crude and crude oil is good, with wax content better, with solidifying point poor, with bitum the poorest, with C in the crude oil
21 -The good and C of correlativity of low equimolecular quantity hydrocarbon compound relative content
21-C
40Poor and the C of the correlativity of intermediate molecular weight hydrocarbon compound
40 +The correlativity of high-molecular-weight hydrocarbons compounds is best, C in the crude oil
40 +High-molecular-weight hydrocarbons compounds relative content is the major control factor of viscosity of crude.
(3) the residual oil viscosity of oil accumulation measurement result shows, enforcement along with the raising of oil-field development time and oil recovery factor and secondary, tertiary oil recovery, remaining oil viscosity and extraction oil viscosity relatively are increase tendency, remaining oil viscosity presents nonuniformity between the different pay sands, has increased difficulty to the enforcement of tertiary oil recovery and other oil production method.
(4) the viscosimetric analysis result of oil reservoir remaining oil is for next step development plan of remaining oil of formulating Sa Ertu oil field and oil field, apricot hilllock and different oil reservoirs provides new foundation.
(5) the present invention has started the new method of residual oil viscosity of oil accumulation test, for oil-field development and improve oil recovery factor New Set is provided, has a extensive future.
Claims (3)
1. the method for a residual oil viscosity of oil accumulation test is characterized in that, comprises following steps:
1) oil-sand of collection crude oil and core hole, extracting organic component wherein is as crude oil test sample and remaining oil test sample respectively;
2) with the hydrocarbon composition data in high temperature gas chromatography analytical approach detection crude oil sample and the remaining oil sample;
3) obtain physical datas such as viscosity of crude, density, solidifying point, wax content, bituminous matter;
4) utilize step 2) crude oil property data that the crude oil hydrocarbon composition that obtains and step 3) obtain, do viscosity of crude and other rerum natura and hydrocarbon composition correlation analysis, determine the major control factor and the relational expression thereof of viscosity of crude;
5) utilize step 2) the hydrocarbon composition data of the oil reservoir remaining oil that obtains, viscosity of crude and major control factor relation formula that the substitution step 4) is established calculate remaining oil viscosity; Wherein:
Step 2) the hydrocarbon composition data of high temperature gas chromatography analytical approach acquisition are low equimolecular quantity C
21 -, intermediate molecular weight C
21-C
40, high molecular C
40 +Compound relative content data;
Step 4) determines that the major control factor of described viscosity of crude is C in the crude oil
40 +The high-molecular weight compounds relative content; Described viscosity of crude and major control factor relation formula are C in viscosity of crude and the crude oil
40 +The relational expression of high-molecular weight compounds relative content x, promptly residual oil viscosity of oil accumulation y computing formula is y=0.5569x
2-1.3021x+9.1435;
The hydrocarbon composition data of the oil reservoir remaining oil of the described relational expression of step 5) substitution are step 2) the remaining oil sample C that obtains
40 +The high-molecular weight compounds relative content.
2. the method for residual oil viscosity of oil accumulation test according to claim 1, it is characterized in that, described step 1) test sample adopts following preparation process: take by weighing oil-sand or crude oil after the pulverizing, pack in the filtration paper cylinder, place in the extracting post of full-automatic multi-functional extracting instrument, use 93: 7 chloroform of volume ratio: the methanol reagent extracting, extracting 8h in 85 ℃ water bath with thermostatic control, be transferred in the measuring cup, 40 ℃ of constant temperature, concentrate, constant weight, obtain oil reservoir remaining oil test sample or crude oil test sample.
3. according to the method for claim 1 or 2 described residual oil viscosity of oil accumulation tests, it is characterized in that the described correlation analysis of step 4) adopts Microsoft office Excel common software.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810056582XA CN101221112B (en) | 2008-01-22 | 2008-01-22 | Method for testing residual oil viscosity of oil accumulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810056582XA CN101221112B (en) | 2008-01-22 | 2008-01-22 | Method for testing residual oil viscosity of oil accumulation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101221112A CN101221112A (en) | 2008-07-16 |
| CN101221112B true CN101221112B (en) | 2010-06-02 |
Family
ID=39631086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810056582XA Active CN101221112B (en) | 2008-01-22 | 2008-01-22 | Method for testing residual oil viscosity of oil accumulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101221112B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101424185B (en) * | 2008-11-24 | 2012-09-05 | 大庆油田有限责任公司 | Geochemistry measuring method for pouring and acquiring residual oil parameter characteristic and relationship of mainstream line and shunt line oil reservoir |
| RU2470285C2 (en) * | 2010-12-03 | 2012-12-20 | Общество с ограниченной ответственностью "Химмотолог" | Method and device to determine operability and quality of lubricant materials |
| CN105758762A (en) * | 2016-03-19 | 2016-07-13 | 江阴市纤维检验所 | High-accuracy testing method of oil content of polyester staple fibers |
| CN106909717B (en) * | 2017-01-23 | 2020-08-11 | 中国石油天然气股份有限公司 | Method for determining main oil production layer of lake-phase low-abundance and multi-production-layer compact oil field |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4286457A (en) * | 1980-03-06 | 1981-09-01 | Shell Oil Company | Viscosity measurement |
| US5699269A (en) * | 1995-06-23 | 1997-12-16 | Exxon Research And Engineering Company | Method for predicting chemical or physical properties of crude oils |
| CN1486395A (en) * | 2001-01-18 | 2004-03-31 | ���ʿ����о�����˾ | Determining the viscosity of a hydrocarbon reservoir fluid |
-
2008
- 2008-01-22 CN CN200810056582XA patent/CN101221112B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4286457A (en) * | 1980-03-06 | 1981-09-01 | Shell Oil Company | Viscosity measurement |
| US5699269A (en) * | 1995-06-23 | 1997-12-16 | Exxon Research And Engineering Company | Method for predicting chemical or physical properties of crude oils |
| CN1486395A (en) * | 2001-01-18 | 2004-03-31 | ���ʿ����о�����˾ | Determining the viscosity of a hydrocarbon reservoir fluid |
Non-Patent Citations (3)
| Title |
|---|
| 冯子辉等.松辽盆地烃源岩中高分子量（C40+）烷烃系列组成及分布特征.中国科学 D辑 地球科学37 9.2007,37(9),1150-1162. |
| 冯子辉等.松辽盆地烃源岩中高分子量(C40+)烷烃系列组成及分布特征.中国科学 D辑 地球科学37 9.2007,37(9),1150-1162. * |
| 方伟等.油藏地球化学测试技术在大庆油田的应用.沉积学报22.2004,22118-123. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101221112A (en) | 2008-07-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Peters et al. | Applied source rock geochemistry: Chapter 5: Part II. Essential elements | |
| Welte | Petroleum exploration and organic geochemistry | |
| US20180217112A1 (en) | Method to determine transformation of kerogen to oil/gas at different maturities using step-wise pyrolysis-gas chromatography | |
| Boreham et al. | Petroleum Source Rock Potential of Coal and Associated Sediments: Qualitative and Quantitative Aspects: Chapter 6 | |
| CN101221112B (en) | Method for testing residual oil viscosity of oil accumulation | |
| Cheng et al. | Tracing early-charged oils and exploration directions for the Wenchang A sag, western Pearl River Mouth Basin, offshore South China Sea | |
| Engelhart et al. | Testing the use of microfossils to reconstruct great earthquakes at Cascadia | |
| Shuai et al. | Key oil accumulation periods of ultra-deep fault-controlled oil reservoir in northern Tarim Basin, NW China | |
| Zhao et al. | Hydrocarbon-generating potential of the upper Paleozoic section of the Huanghua Depression, Bohai Bay Basin, China | |
| Bao et al. | Gas origin and constraint of δ13C (CH4) distribution in the Dafosi mine field in the southern margin of the Ordos Basin, China | |
| Kalpana et al. | Light gaseous hydrocarbon anomalies in the near surface soils of Proterozoic Cuddapah Basin: Implications for hydrocarbon prospects | |
| Huang et al. | Characterization of Eocene lacustrine source rocks and their oils in the Beibuwan Basin, offshore South China Sea | |
| Hou et al. | Identification of oil produced from shale and tight reservoirs in the Permian Lucaogou Shale sequence, Jimsar Sag, Junggar Basin, NW China | |
| Rodriguez et al. | Source rock facies distribution predicted from oil geochemistry in the Central Sumatra Basin, Indonesia | |
| Agrawal et al. | Testing utility of organogeochemical proxies to assess sources of organic matter, paleoredox conditions, and thermal maturity in mature marcellus shale | |
| Li et al. | Practical application of reservoir geochemistry in petroleum exploration: Case study from a Paleozoic Carbonate reservoir in the Tarim Basin (Northwestern China) | |
| Edman et al. | Geochemistry of Eagle Ford group source rocks and oils from the first shot field area, Texas | |
| Edwards et al. | Resolving discrepancies between field and modelled relative sea‐level data: lessons from western Ireland | |
| Osli et al. | Organic matter characteristics and hydrocarbon generating potential of the Miocene Belait Formation, Brunei-Muara district, Brunei Darussalam | |
| Liu et al. | Geochemical evaluation of produced petroleum from the Middle Permian Lucaogou reservoirs Junggar Basin and its implication for the unconventional shale oil play | |
| Murphy et al. | Vadose zone thickness limits pore‐fluid pressure rise in a large, slow‐moving earthflow | |
| Püspöki et al. | A sequence stratigraphic investigation of a Miocene formation supported by coal seam quality parameters–Central Paratethys, N-Hungary | |
| Sen et al. | Identifying relationship amongst vitrinite/inertinite ratio (V/I), cleat parameters, vitrinite reflectance, O/C ratio and permeability of coal seams and V/I ratio as exploration tool: Study from Raniganj coal bed methane block, Essar Oil Limited, India | |
| Hackley et al. | Organic geochemistry and petrology of subsurface paleocene–eocene Wilcox and Claiborne group coal beds, Zavala County, Maverick Basin, Texas, USA | |
| Xu et al. | Geochemical and preliminary reservoir characteristics of the carboniferous–Permian coal-bearing strata in the Junger area, northeastern Ordos Basin, China: source implications for unconventional gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200927 Address after: 100007 Dongcheng District, Dongzhimen, China, North Street, No. 9 Oil Mansion, No. Patentee after: PetroChina Co.,Ltd. Patentee after: Daqing Oilfield Co.,Ltd. Address before: Heilongjiang Province, Daqing City Ranghulu District 163453 Patentee before: Daqing Oilfield Co.,Ltd. |