CN108005649A - The method that efficiency value differentiation formation fluid property is surveyed using gas - Google Patents
The method that efficiency value differentiation formation fluid property is surveyed using gas Download PDFInfo
- Publication number
- CN108005649A CN108005649A CN201711348811.0A CN201711348811A CN108005649A CN 108005649 A CN108005649 A CN 108005649A CN 201711348811 A CN201711348811 A CN 201711348811A CN 108005649 A CN108005649 A CN 108005649A
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- Prior art keywords
- gas
- efficiency value
- surveyed
- survey
- fluid
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
- E21B49/087—Well testing, e.g. testing for reservoir productivity or formation parameters
- E21B49/0875—Well testing, e.g. testing for reservoir productivity or formation parameters determining specific fluid parameters
Abstract
The invention discloses a kind of method that efficiency value differentiation formation fluid property is surveyed using gas, its step are as follows：A, display segment gas delivery mode is surveyed according to gas, establishes gas and survey efficiency value calculating method；B, the gas that the Duan Zhongqi of drilling well formation testing surveys display segment in region is calculated according to gas survey efficiency value calculating method surveys efficiency value, and according to the otherness of formation testing result, preferably fluid discriminant value；C, efficiency value calculation formula and fluid discriminant value are surveyed with reference to gas, the gas of forming region surveys efficiency value fluid interpretation model.Method introduces new parameter gas to survey efficiency value and its computational methods, extend the means of logging explanation, the parameter that the gas survey efficiency value of gas survey display segment is differentiated as fluid at the same time, the gas survey feature that gas surveys display is not only more fully embodied, also overcomes using gas survey peak value as gas survey and shows limitation existing for feature.
Description
Technical field
The present invention relates to a kind of method that efficiency value differentiation formation fluid property is surveyed using gas, belong to oil and gas exploration
Development technique field.
Background technology
Gas surveys the important parameter that parameter is logging explanation, is explained especially for fluid, is required for surveying ginseng using gas substantially
Number, and the proportional difference of total hydrocarbon and each component in data mainly is surveyed according to gas, carried out in the method for plate or other forms
Differentiate.However, as drilling technology, the continuous of property of drilling fluid complicate, gas surveys response of the parameter for formation fluid property
Precision reduces, and method effect is deteriorated, it is primarily present problems with：
1st, the current fluid means of interpretation based on gas survey parameter is mainly the cluster analysis by surveying data to region gas,
Find effective fluid discrimination model.But under the conditions of complicated drilling technology, Clustering Effect is deteriorated, and can not establish differentiation mould
Formula.
What the 2nd, the fluid means of interpretation based on gas survey parameter used is all the gas survey data of Depth Domain, it is depth pair
The gas answered surveys maximum, wherein have ignored the influence of time-domain.
3rd, gas is surveyed parameter and is influenced seriously by engineering parameter, but what current fluid means of interpretation used is all not carry out engineering
The gas of parameter correction surveys data, certainly exists limitation.
4th, what current fluid means of interpretation was applied is all the data of single-point, i.e. the gas of some depth point surveys data, does not have
Have and consider that gas surveys the information that change of the data in depth is included.
The content of the invention
It is contemplated that the defects of for present in the above-mentioned prior art and deficiency, there is provided one kind is surveyed efficiency value using gas and sentenced
The method of other formation fluid property, method introduces new parameter gas to survey efficiency value and its computational methods, extends logging explanation
Means, while the gas that gas is surveyed to display segment surveys the parameter that differentiates as fluid of efficiency value, not only more fully embodies gas and surveys
The gas of display surveys feature, also overcomes using gas and surveys limitation existing for peak value as gas survey display feature.
The present invention is realized by using following technical proposals：
A kind of method that efficiency value differentiation formation fluid property is surveyed using gas, it is characterised in that step is as follows：
A, display segment gas delivery mode is surveyed according to gas, establishes gas and survey efficiency value calculating method；
B, the gas that the Duan Zhongqi of drilling well formation testing surveys display segment in region is calculated according to gas survey efficiency value calculating method surveys efficiency value,
And according to the otherness of formation testing result, preferably fluid discriminant value；
C, efficiency value calculation formula and fluid discriminant value are surveyed with reference to gas, the gas of forming region surveys efficiency value fluid interpretation model.
In the step a, display segment gas delivery mode is surveyed according to gas, establishing gas survey efficiency value calculating method is：Gas is surveyed
Value reflection is the gas flow discharged in stratum, is recorded by axis of the time, and is bullied and surveys the influence of base value.Surveyed according to gas
The gas release of display segment and drainage pattern, derive rate of gas release（Gas surveys efficiency）Calculation formula be：
However, conventional gas, which surveys data, to be recorded by axis of depth, therefore formula 2 is transformed to the integration of Depth Domain：
。
In the step b, according to the otherness of formation testing result, preferably fluid discriminant value is：Efficiency value is surveyed using gas to calculate
Method calculates the gas survey efficiency value that the Duan Zhongqi of drilling well formation testing in region surveys display segment, and according to the formation testing result of each formation testing section
The gas survey efficiency value that display segment is surveyed to gas is classified, and preferably goes out fluid discriminant value for the purpose of coincidence rate maximum.
Compared with prior art, what the present invention was reached has the beneficial effect that：
1st, the present invention surveys efficiency value calculating method by establishing gas, true to reflect that gas surveys display segment hydrocarbon gas and overflows speed（Gas
Survey efficiency）.And the otherness of display segment gas survey efficiency is surveyed according to gas in the stratum of different fluid property, establish formation fluid differentiation
Method, wherein, introduce new parameter gas and survey efficiency value（Gas overflowing speed）And its computational methods, extend the hand of logging explanation
Section.
2nd, the parameter that the present invention differentiates the gas survey efficiency value of gas survey display segment as fluid, not only more fully embodies
The gas that gas surveys display surveys feature, also overcomes using gas survey peak value as gas survey and shows limitation existing for feature.
3rd, invention applies two engineering parameters when drilling fluid displacement and brill the accurate of efficiency value calculating is surveyed to improve gas
Property, it is significantly superior than pervious gas reservoir prediction method.
Brief description of the drawings
Below in conjunction with specification drawings and specific embodiments, the present invention is described in further detail, wherein：
The GM areas gas survey efficiency value interpretative method fluid discriminant value that Fig. 1 is the present invention is preferably schemed.
Embodiment
With reference to Figure of description, as the preferred forms of the present invention, efficiency value is surveyed using gas it discloses one kind and sentenced
The method of other formation fluid property, its step are：
A, display segment gas delivery mode is surveyed according to gas, establishes gas and survey efficiency value calculating method；
B, the gas that the Duan Zhongqi of drilling well formation testing surveys display segment in region is calculated according to gas survey efficiency value calculating method surveys efficiency value,
And according to the otherness of formation testing result, preferably fluid discriminant value.
C, efficiency value calculation formula and fluid discriminant value are surveyed with reference to gas, the gas of forming region surveys efficiency value fluid and explains mould
Type.
In the step a, display segment gas delivery mode is surveyed according to gas, establishing gas survey efficiency value calculating method is：Gas is surveyed
Value reflection is the gas flow discharged in stratum, is recorded by axis of the time, and is bullied and surveys the influence of base value.Surveyed according to gas
The gas release of display segment and drainage pattern, derive rate of gas release（Gas surveys efficiency）Calculation formula be
However, conventional gas, which surveys data, to be recorded by axis of depth, therefore formula 2 is transformed to the integration of Depth Domain.
。
In the step b, according to the otherness of formation testing result, preferably fluid discriminant value is：Efficiency value is surveyed using gas to calculate
Method calculates the gas survey efficiency value that the Duan Zhongqi of drilling well formation testing in region surveys display segment.And according to the formation testing result of each formation testing section
The gas survey efficiency value that display segment is surveyed to gas is classified, and preferably goes out fluid discriminant value for the purpose of coincidence rate maximum.
This method surveys the release of display segment gas and drainage pattern according to gas, establishes gas and surveys efficiency value calculating method, true anti-
Reflect gas and survey display segment gas overflowing speed.And the difference that display segment gas surveys efficiency value is surveyed according to gas in the stratum of different fluid property
Property, preferably fluid discriminant value.Efficiency value calculating method and fluid discriminant value are surveyed with reference to gas, region gas is obtained and surveys efficiency value fluid solution
Release model.
Claims (3)
- A kind of 1. method that efficiency value differentiation formation fluid property is surveyed using gas, it is characterised in that step is as follows：A, display segment gas delivery mode is surveyed according to gas, establishes gas and survey efficiency value calculating method；B, the gas that the Duan Zhongqi of drilling well formation testing surveys display segment in region is calculated according to gas survey efficiency value calculating method surveys efficiency value, And according to the otherness of formation testing result, preferably fluid discriminant value；C, efficiency value calculation formula and fluid discriminant value are surveyed with reference to gas, the gas of forming region surveys efficiency value fluid interpretation model.
- A kind of 2. method that efficiency value differentiation formation fluid property is surveyed using gas according to claim 1, it is characterised in that： In the step a, display segment gas delivery mode is surveyed according to gas, establishing gas survey efficiency value calculating method is：Surveyed and shown according to gas The gas release of section and drainage pattern, derive rate of gas release（Gas surveys efficiency）Calculation formula be：Formula 2 is transformed to the integration of Depth Domain：。
- A kind of 3. method that efficiency value differentiation formation fluid property is surveyed using gas according to claim 1, it is characterised in that： In the step b, according to the otherness of formation testing result, preferably fluid discriminant value is：Efficiency value calculating method is surveyed using gas to calculate Go out the Duan Zhongqi of drilling well formation testing in region and survey the gas survey efficiency value of display segment, and gas is surveyed according to the formation testing result of each formation testing section and is shown Show that the gas of section surveys efficiency value and classifies, and preferably go out fluid discriminant value for the purpose of coincidence rate maximum.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109403960A (en) * | 2018-09-06 | 2019-03-01 | 中国石油集团川庆钻探工程有限公司 | The method that peak shape state judges properties of fluid in bearing stratum is surveyed using well logging gas |
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