CN105604548B - A kind of formation oil based on oil base drilling fluid sentences knowledge method - Google Patents
A kind of formation oil based on oil base drilling fluid sentences knowledge method Download PDFInfo
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Abstract
The invention discloses a kind of formation oils based on oil base drilling fluid to sentence knowledge method, comprising the following steps: carries out nuclear magnetic resonance spectroscopy to the oil base drilling fluid sampling of different intervals, and draws the standardization nuclear magnetic resonance logging T2 spectrum of the oil base drilling fluid of corresponding sampled point；The oil base drilling fluid oil content of whole sampled points is calculated based on standardization nuclear magnetic resonance logging T2 spectrum；Oil base drilling fluid oil content baseline is drawn based on oil base drilling fluid oil content；Sentence whether knowledge bores chance oil reservoir and bore the property for meeting oil reservoir based on standardization nuclear magnetic resonance logging T2 spectrum, oil base drilling fluid oil content and oil base drilling fluid oil content baseline.The present invention can accurately sentence knowledge oil bearing bed and can be with quantitative analysis hydrocarbon content, overcome the bottleneck that oil reservoir is difficult to find based on cuttings analysis means, it compensates for gas and surveys the deficiency for only detecting drilling fluid free gas and being influenced by oil base drilling fluid, this method is easy, reliable, easy to operate.
Description
Technical field
The present invention relates to mud logging techniques fields, specifically, being related to a kind of based on NMR logging technique identification stratum
The method of oil.
Background technique
Subsurface boring information abundant is carried in drilling fluid, these information are influenced smaller by drill bit and drilling well.At present
The information that the drilling fluid fluorologging technology of use can effectively identify subterranean oil gas-bearing formation, record oil/gas show.Drilling fluid is glimmering
Light logging method mainly utilizes the relevant technologies such as Gas logging data, two dimension or 3-D quantitative fluorescence, mud gas isotope and method
Oilbearing stratum is judged.But these methods are relatively applicable at qualitative aspect, and be clearly present in terms of oil-gas quantitative scarce
It falls into, and influence of these methods vulnerable to drilling well.The reason is that the drilling fluid that these methods use is oil base drilling fluid, oil base
Drilling fluid belongs to Water-In-Oil, adds the content of oil considerably beyond the stratum oil content of intrusion pit shaft, therefore, the oil based on landwaste
Gas detection technique can not find oil reservoir.
As shown in Figure 1 for oil-bearing sand with not fluorescence of the oil-bearing sand after oil base drilling fluid impregnates directly according to figure.Wherein, left
The fluorescence for the not oil-bearing sand that Fang Weijing oil base drilling fluid impregnates directly shines image, and right is the oil soaked sand impregnated through oil base drilling fluid
The fluorescence of rock directly shines image.Color indicates immersion oil landwaste compared with dark-part in figure, and as seen from the figure, difference is unobvious,
Under fluorescent lamp can not the oily situation to landwaste judge.
The gas detection logging and well log interpretation contrast schematic diagram being illustrated in figure 2 under the conditions of oil base drilling fluid.Wherein, the 4th
Methane, ethane, the propane content detected for gas detection logging.As shown, have oil stain near depth 5750m, the corresponding depth
The oil-gas quantitative that degree measures is shown to differ greatly with result of log interpretation, cannot recognize the oil bearing formation property on stratum.
Based on the above situation, a kind of side that can be found in time simultaneously energy quantitative assessment based on oil base drilling fluid and bore chance oil reservoir is needed
Method.
Summary of the invention
It is met to solve the above problems, finding that simultaneously energy quantitative assessment is bored in time based on oil base drilling fluid the present invention provides one kind
The method of oil reservoir.
According to one embodiment of present invention, it provides a kind of formation oil based on oil base drilling fluid and sentences knowledge method, including
Following steps:
Step 1: the oil base drilling fluid sampling to different intervals carries out nuclear magnetic resonance spectroscopy, and draw corresponding sampled point
The standardization nuclear magnetic resonance logging T of oil base drilling fluid2Spectrum；
Step 2: being based on the standardization nuclear magnetic resonance logging T2Spectrum calculates the oil base drilling fluid oil-containing of whole sampled points
Rate；
Step 3: drawing oil base drilling fluid oil content baseline based on the oil base drilling fluid oil content；
Step 4: being based on the standardization nuclear magnetic resonance logging T2Spectrum, the oil base drilling fluid oil content and the oil base
Oil content of drilling fluid rate baseline knows the property for whether boring chance oil reservoir and brill chance oil reservoir to sentence.
According to one embodiment of present invention, in step 1, further comprise:
Different intervals sample oil base drilling fluid using corresponding sampling model and record the oil base sampled every time
The quality of drilling fluid；
Nuclear magnetic resonance logging test is carried out to the oil base drilling fluid of each sampled point and draws corresponding nuclear magnetic resonance logging
T2Spectrum；
To the nuclear magnetic resonance logging T2Spectrum is standardized to obtain and standardize nuclear magnetic resonance logging T2Spectrum.
According to one embodiment of present invention, the sampling model includes that interval of interest sampling model and non-object layer section are adopted
Original mold type, the interval of interest sampling model correspond to purpose sampling oil reservoir, and the non-object layer section sampling model corresponds to non-purpose
Sample oil reservoir.
According to one embodiment of present invention, the interval of interest sampling model is along depth direction, between presetting with first
Sample the oil base drilling fluid for weighing preset quality one by one every progress；
The non-object layer section sampling model be along depth direction, with the second preset interval carry out sampling one by one weigh it is default
The oil base drilling fluid of quality.
According to one embodiment of present invention, standardization is to obtain standardization nuclear magnetic resonance logging T2Spectrum include: with
The nuclear magnetic resonance logging T of standard quality oil base drilling fluid2The range value of spectrum is as benchmark, based on preset quality oil base drilling fluid
Nuclear magnetic resonance logging T2The nuclear magnetic resonance logging T of the range value of spectrum and the standard quality oil base drilling fluid in corresponding relaxation time2Spectrum
Range value obtains the corresponding standardization nuclear magnetic resonance logging T of preset quality oil base drilling fluid2Spectrum.
According to one embodiment of present invention, the oil base drilling fluid oil content is calculated based on following formula:
Wherein, C0It is oil base drilling fluid oil content；S1It is standardization nuclear magnetic resonance logging T2The oily peak area of spectrum, including oil
Position corresponding to peak and water peak connecting place minimum point range value and the area surrounded by oily peak curve, indicate in oil base drilling fluid
Oil content；S2It is standardization nuclear magnetic resonance logging T2The gross area of spectrum, including oily peak curve, water peak curve and relaxation time axis
The area of encirclement indicates oil base drilling fluid total amount.
According to one embodiment of present invention, in step 3, further comprise:
It is marked along the oil base drilling fluid oil content of the depth direction to each sampled point；
The low oil content point chosen in the oil base drilling fluid oil content connects to form smoothed curve to obtain the oil base
Oil content of drilling fluid rate baseline.
According to one embodiment of present invention, in step 4, further comprise:
Obtain the standardization nuclear magnetic resonance logging T of each sampled point2Oily peak position in spectrum；
Draw oily peak-depth curve in oily peak position based on each sampled point；
Based on the oily peak-depth curve, the oil base drilling fluid oil content and the oil base drilling fluid oil content baseline
Sentence the property for knowing and whether boring and meeting oil reservoir and bore chance oil reservoir.
According to one embodiment of present invention, sentence know oil reservoir and bore meet oil reservoir property include:
If the oily peak position respective value in the oil peak-depth curve is remained unchanged with drilling depth increase and the oil base
Oil content of drilling fluid rate increases above the oil base drilling fluid oil content baseline or oily peak position respective value increases with drilling depth
Increase along the relaxation time and oil base drilling fluid oil content increases above oil base drilling fluid oil content baseline, is then judged as that brill encounters
Lightweight oil-bearing layer；
If the oily peak position respective value in the oil peak-depth curve increases with drilling depth and reduced, it is judged as brill
Encounter heavy oil reservoir.
Present invention offers following the utility model has the advantages that
The present invention is analysis object with oil base drilling fluid, and using nuclear magnetic resonance technique, monitoring while drilling oil base drilling fluid contains
The change in location situation at oily peak, can accurately sentence and know oil bearing bed and can determine in oil cut rate and standardization nuclear magnetic resonance logging T2 spectrum
Analyzing oil and gas content is measured, the bottleneck for being difficult to find oil reservoir based on cuttings analysis means is overcome, gas survey is compensated for and only detects drilling well
Liquid free gas and the deficiency influenced by oil base drilling fluid.This method is easy, reliable, easy to operate.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention can be by specification, right
Specifically noted structure is achieved and obtained in claim and attached drawing.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is required attached drawing in technical description to do simple introduction:
Fig. 1 is prior art oil-bearing sand with not fluorescence of the oil-bearing sand after oil base drilling fluid impregnates directly according to figure；
Fig. 2 is the gas detection logging and well log interpretation contrast schematic diagram under the conditions of prior art oil base drilling fluid；
Fig. 3 is method flow diagram according to an embodiment of the invention；
Fig. 4 is the method flow diagram of step S1 in Fig. 3；
Fig. 5 is the nuclear magnetic resonance logging T2 spectrum of oil base drilling fluid according to an embodiment of the invention；
Fig. 6 is the method flow diagram of step S4 in Fig. 3；
Fig. 7 be bituminous sandstone section test result under the conditions of oil base drilling fluid according to an embodiment of the invention with
Well log interpretation comparison diagram；And
Fig. 8 is light-middle matter oil sands section test knot under the conditions of oil base drilling fluid according to an embodiment of the invention
Fruit and well log interpretation comparison diagram.
Specific embodiment
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings and examples, how to apply to the present invention whereby
Technological means solves technical problem, and the realization process for reaching technical effect can fully understand and implement.It needs to illustrate
As long as not constituting conflict, each feature in each embodiment and each embodiment in the present invention can be combined with each other,
It is within the scope of the present invention to be formed by technical solution.
First embodiment
It is illustrated in figure 3 method flow diagram according to an embodiment of the invention.
In step sl, the mark of the oil base drilling fluid of corresponding sampled point is sampled and drawn to the oil base drilling fluid of different intervals
Standardization nuclear magnetic resonance logging T2 spectrum.The step can be divided into several steps below, as shown in Figure 4.
In step s 110, different intervals sample oil base drilling fluid using corresponding sampling model and is recorded every
The quality of the oil base drilling fluid of secondary sampling.
In this step, the difference based on interval of interest and non-object layer section oil content, is respectively adopted different sampling moulds
Type samples oil-bearing layer.Sampling model can be divided into interval of interest sampling model and non-object layer section sampling model.In mesh
Interval set the first preset interval and the oil base drilling fluid that sampling one by one weighs preset quality carried out to stratum along depth direction.
It sets the second preset interval along depth direction in non-object layer section and the oil base that sampling one by one weighs preset quality is carried out to stratum
Drilling fluid.Wherein, the first preset interval is less than the second preset interval.
In a preferred embodiment of the invention, the first preset interval is set as one meter, i.e., each rice take 1 point into
The sampling of row oil base drilling fluid.Second preset interval is set as two meters, i.e., every two meters take some progress oil base drilling fluid sampling.To every
A sampled point weighs the oil base drilling fluid of preset quality, and each weighed oil base drilling fluid quality is recorded.
In the step s 120, nuclear magnetic resonance logging test is carried out to the oil base drilling fluid of each sampled point and drawn corresponding
Nuclear magnetic resonance logging T2 spectrum.
In this step, nuclear magnetic resonance logging test is carried out respectively for the oil base drilling fluid of each sampled point, to obtain
Obtain the nuclear magnetic resonance logging T2 spectrum of the oil base drilling fluid.Core is carried out to drilling fluid Zhong Shui and oil using NMR logging technique
When magnetic resonance is tested, energy is obtained since the hydrogen molecule in the composed structure of hydrone and oil molecule absorbs magnetic energy, hydrogen molecule is just
Original equilbrium position can be detached from.After magnetic field disappears, hydrogen molecule, which releases energy, returns to equilbrium position.Hydrogen molecule returns to balance position
The time set is known as the relaxation time.Lateral relaxation time is generallyd use as measurement standard, referred to as nuclear magnetic resonance logging T2 spectrum.
Relaxation time size is related with the flow regime of fluid (i.e. water or oil).If fluid is in bound state when relaxation
Between it is short, then the relaxation time is long in flowable state.In oil base drilling fluid, water is in bound state, so when the relaxation of water
Between it is short, oil be in flowable state, then the relaxation time is long.In oil base drilling fluid, the oil of different densities has different relaxations
The Henan time, i.e., the oily density smaller relaxation time is longer, so the relaxation time has also reacted the density size of fluid.Such as Fig. 5 institute
The nuclear magnetic resonance logging T2 for being shown as oil base drilling fluid is composed, oil base drilling fluid, Water-In-Oil, and water is in bound state, and oil, which is in, to flow
Dynamic state, it is that movable fluid and constraint are flowed that so left peak is water peak, right peak, which is oily peak, and the two junction minimum point is cutoff value
The line of demarcation of body.
In step s 130, magnetic resonance-mud logging T2 spectrum is standardized to obtain and standardize nuclear magnetic resonance logging T2
Spectrum.After the nuclear magnetic resonance logging T2 spectrum for obtaining oil base drilling fluid, to carry out preferably comparative analysis, by the nuclear-magnetism of each sampled point
Resonance well logging T2 spectrum is standardized.
The method of standardization is as follows: being made with the range value that the nuclear magnetic resonance logging T2 of standard quality oil base drilling fluid is composed
On the basis of, the range value and the standard matter in corresponding relaxation time of the nuclear magnetic resonance logging T2 spectrum based on preset quality oil base drilling fluid
The range value for measuring the nuclear magnetic resonance logging T2 spectrum of oil base drilling fluid obtains the corresponding standardization nuclear-magnetism of preset quality oil base drilling fluid
Resonate well logging T2 spectrum.
In a preferred embodiment of the invention, the oil base drilling fluid of standard quality chooses 1.5 grams.To calculate and counting
Convenient according to processing, the oil base drilling fluid of preset quality also chooses 1.5 grams.Due to when reality samples oil base drilling fluid every time
The oil base drilling fluid quality of extraction is not necessarily 1.5 grams, might have deviation, so need to remember to each weighed quality
Record.In one embodiment of the invention, the mass values that quality is weighed based on oil base drilling fluid preset quality and actually, will be real
The range value that border weighs the nuclear magnetic resonance logging T2 spectrum of the oil base drilling fluid of quality is multiplied resulting value conduct with the mass values
Range value, corresponding relaxation time remain unchanged to obtain standardization nuclear magnetic resonance logging T2 spectrum.
In step s 2, the oil base drilling fluid oil-containing of whole sampled points is calculated based on standardization nuclear magnetic resonance logging T2 spectrum
Rate.
By standardization nuclear magnetic resonance logging T2 spectrum, the oil base drilling fluid of each sampled point is calculated using following formula
Oil content:
Wherein, C0 is oil base drilling fluid oil content；S1 is the oily peak area for standardizing nuclear magnetic resonance logging T2 spectrum, including oil
Position corresponding to peak and water peak connecting place minimum point range value and the area surrounded by oily peak curve, indicate in oil base drilling fluid
Oil content；S2 is the gross area for standardizing nuclear magnetic resonance logging T2 spectrum, including oily peak curve, water peak curve and relaxation time axis
The area of encirclement indicates oil base drilling fluid total amount.
In step s3, oil base drilling fluid oil content baseline is drawn based on oil base drilling fluid oil content.The step can divide
For several steps below.
Firstly, being marked along the oil base drilling fluid oil content of the depth direction to each sampled point.Of the invention
In one specific embodiment, column corresponding with depth can be drawn according to the value of the oil base drilling fluid oil content of each sampled point
Shape figure or stick plot.
Then, the low oil content point connection forming curves in the oil base drilling fluid oil content in all sampled points are chosen to obtain
Take oil base drilling fluid oil content baseline.
In step s 4, contained based on standardization nuclear magnetic resonance logging T2 spectrum, oil base drilling fluid oil content and oil base drilling fluid
Oil cut rate baseline knows the property for whether boring chance oil reservoir and brill chance oil reservoir to sentence.The step further comprises several steps below,
As shown in Figure 6.
In step S410, the oily peak position in the standardization nuclear magnetic resonance logging T2 spectrum of each sampled point is obtained first
It sets.The value in oil peak corresponding relaxation time in the corresponding standardization nuclear magnetic resonance logging T2 spectrum in the oil peak position.
In the step s 420, oily peak-depth curve is drawn in the oily peak position based on each sampled point.In this step, will
Each corresponding depth of stratum of sampled point and the sampled point are standardizing the oily peak position of nuclear magnetic resonance logging T2 spectrum acquisition one by one
It is corresponding to draw oily peak-depth curve.
In step S430, based on oily peak-depth curve, oil base drilling fluid oil content and oil base drilling fluid oil content baseline
Sentence the property for knowing and whether boring and meeting oil reservoir and bore chance oil reservoir.
In this step, if sentencing the method known oil reservoir and bore the property for meeting oil reservoir includes: in the oily peak-depth curve
Oily peak position respective value remained unchanged with drilling depth and the oil base drilling fluid oil content increases above the oil base drilling well
Liquid oil content baseline or oily peak position respective value increase with drilling depth along the relaxation time and oil base drilling fluid oil content increases
Beyond oil base drilling fluid oil content baseline, then it is judged as that brill encounters middle lightweight oil-bearing layer；If the oil in the oil peak-depth curve
Peak position respective value reduces with drilling depth, then is judged as that brill encounters heavy oil reservoir.
Wherein, middle light oil refers to that the content of carbon in oil molecule is lower, and mink cell focus refers to the content of carbon in oil molecule
It is higher.
Second embodiment
It is illustrated in figure 7 the bituminous sandstone section that depth bounds are 5408-5568m and oil reservoir position is measured using the present invention
And the contrast schematic diagram of hydrocarbon content and the oil reservoir position and hydrocarbon content that are obtained by logging technique.Wherein, first is ground
Layer depth, second are the formation lithology of corresponding each depth of stratum, and third road is when boring and total hydrocarbon in gas logging, and the 4th measures for gas
Methane, ethane and the propane content arrived, the 5th is oily peak (i.e. oily peak-depth curve), and the 6th is in oil base drilling fluid
The content of oil is added, the 7th is oil content of drilling fluid rate, and the 8th is to be explained using the hydrocarbon stratum that the present invention obtains, the 9th
For stratum well log interpretation, the tenth is well logging gamma ray curve, and the 10th be for one middle induction motor in well logging and feel deeply
Resistivity is answered, the 12nd is drilling fluid density and Drilling Fluid Viscosity.
It is learnt by Fig. 7, with the increase of drilling depth, in five You Feng-depth curve, nuclear magnetic resonance logging T2 spectrum
Middle oil peak position is mobile to relaxation time reduction direction, infers that brill encounters relatively heavy oil reservoir by the method for the invention.Root
It explains that there are 2 layers of oil-containing water layer at this twice according to the reduction that oily peak position corresponds to the relaxation time, has with the 9th well log interpretation
Two oil-containing water layers are very identical.Due to the error of the error and lagged time of drilling tool and logging cable, cause on interpreted depth
Have an error, when analysis it is noted that.
It is illustrated in figure 8 the interval of interest that depth bounds are 5700-6000m.It wherein, is for first depth of stratum, second
Road is the formation lithology of corresponding each depth of stratum, and third road is when boring and total hydrocarbon in gas logging, the 4th measured for gas methane, second
Alkane and propane content, the 5th is drilling fluid density and Drilling Fluid Viscosity, and the 6th is oily peak (i.e. oily peak-depth curve), the
Seven is, in the content of the addition oil of oil base drilling fluid, the 8th are oil content of drilling fluid rate, and the 9th is to obtain using the present invention
Hydrocarbon stratum explain, the tenth be stratum well log interpretation, the 10th one for well logging gamma ray curve, the 12nd for well logging
In middle induction motor and deep induction resistivity.
It is learnt by Fig. 8, with the increase of drilling depth, the nuclear magnetic resonance logging T2 in six You Feng-depth curve is composed
Oily peak position remained unchanged in the depth bounds of interval of interest and the 8th oil base drilling fluid oil content on the direction of stratum
Oil base drilling fluid oil content baseline is increased above, infers that brill encounters light-middle matter oil reservoir by the method for the invention.It is bored according to oil base
The positional relationship of well liquid oil content and oil base drilling fluid oil content baseline is construed to 3 layers of oil-water common-layer, 2 layers of oil-containing water layer；And the
Ten oil-gas Layers of well log interpretation 1,2 oil-water common-layers, 2 oil-containing water layers, the result of the two more meet.
Although the embodiment that the present invention is announced is as above, the content is only to facilitate understanding the present invention and adopting
Embodiment is not intended to limit the invention.Any those skilled in the art to which this invention pertains are not departing from this
Under the premise of inventing announced spirit and scope, any modification and change can be made in the implementing form and in details,
But scope of patent protection of the invention, still should be subject to the scope of the claims as defined in the appended claims.
Claims (7)
1. a kind of formation oil based on oil base drilling fluid sentences knowledge method, comprising the following steps:
Step 1: the oil base drilling fluid sampling to different intervals carries out nuclear magnetic resonance spectroscopy, and draw the oil base of corresponding sampled point
The standardization nuclear magnetic resonance logging T of drilling fluid2Spectrum；
Step 2: being based on the standardization nuclear magnetic resonance logging T2Spectrum calculates the oil base drilling fluid oil content of whole sampled points；
Step 3: drawing oil base drilling fluid oil content baseline based on the oil base drilling fluid oil content；And
Step 4: being based on the standardization nuclear magnetic resonance logging T2Spectrum, the oil base drilling fluid oil content and the oil base drilling fluid
Oil content baseline knows the property for whether boring chance oil reservoir and brill chance oil reservoir to sentence,
The step 4 includes:
Obtain the standardization nuclear magnetic resonance logging T of each sampled point2Oily peak position in spectrum；
Draw oily peak-depth curve in oily peak position based on each sampled point；
Knowledge is sentenced based on the oily peak-depth curve, the oil base drilling fluid oil content and the oil base drilling fluid oil content baseline
Whether brill meets oil reservoir and bores the property for meeting oil reservoir,
Wherein, sentence whether knowledge bores chance oil reservoir and the property of brill chance oil reservoir includes:
If the oily peak position respective value in the oil peak-depth curve is remained unchanged with drilling depth increase and the oil base drilling well
Liquid oil content increases above the oil base drilling fluid oil content baseline or oily peak position respective value increases with drilling depth along relaxation
The Henan time increases and oil base drilling fluid oil content increases above oil base drilling fluid oil content baseline, then is judged as that brill encounters middle lightweight
Oil-bearing layer；
If the oily peak position respective value in the oil peak-depth curve increases with drilling depth and reduced, it is judged as that brill encounters
Heavy oil reservoir.
2. the method as described in claim 1, which is characterized in that in step 1, further comprise:
Different intervals sample oil base drilling fluid using corresponding sampling model and record the oil base drilling well sampled every time
The quality of liquid；
Nuclear magnetic resonance logging test is carried out to the oil base drilling fluid of each sampled point and draws corresponding nuclear magnetic resonance logging T2Spectrum；
To the nuclear magnetic resonance logging T2Spectrum is standardized to obtain and standardize nuclear magnetic resonance logging T2Spectrum.
3. method according to claim 2, which is characterized in that the sampling model includes interval of interest sampling model and non-mesh
Interval sampling model, the interval of interest sampling model correspond to purpose sampling oil reservoir, the non-object layer section sampling model pair
Answer non-purpose sampling oil reservoir.
4. method as claimed in claim 3, which is characterized in that the interval of interest sampling model is along depth direction, with the
One preset interval carries out the oil base drilling fluid that sampling one by one weighs preset quality；
The non-object layer section sampling model is to carry out sampling one by one along depth direction with the second preset interval and weigh preset quality
Oil base drilling fluid.
5. the method as described in any one of claim 2-4, which is characterized in that standardization is total to obtain standardization nuclear-magnetism
Shake well logging T2Spectrum includes: the nuclear magnetic resonance logging T with standard quality oil base drilling fluid2The range value of spectrum is as benchmark, based on default
The nuclear magnetic resonance logging T of quality oil base drilling fluid2The range value of spectrum and the standard quality oil base drilling fluid in corresponding relaxation time
Nuclear magnetic resonance logging T2The range value of spectrum obtains the corresponding standardization nuclear magnetic resonance logging T of preset quality oil base drilling fluid2Spectrum.
6. method as claimed in claim 5, which is characterized in that calculate the oil base drilling fluid oil-containing based on following formula
Rate:
Wherein, C0It is oil base drilling fluid oil content；S1It is standardization nuclear magnetic resonance logging T2The oily peak area of spectrum, including oily peak with
Position corresponding to water peak connecting place minimum point range value and the area surrounded by oily peak curve, indicate the oil in oil base drilling fluid
Content；S2It is standardization nuclear magnetic resonance logging T2The gross area of spectrum, including oily peak curve, water peak curve and relaxation time axis surround
Area, indicate oil base drilling fluid total amount.
7. method as claimed in claim 6, which is characterized in that in step 3, further comprise:
It is marked along the oil base drilling fluid oil content of the depth direction to each sampled point；
The low oil content point in the oil base drilling fluid oil content is chosen to connect to form smoothed curve to obtain the oil base drilling well
Liquid oil content baseline.
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| CN109709130B (en) * | 2017-10-25 | 2022-02-01 | 苏州纽迈分析仪器股份有限公司 | Method for testing oil content of stratum of full-oil-based drilling fluid |
| CN111380891B (en) * | 2018-12-29 | 2023-06-30 | 中国石油化工股份有限公司 | Method for constructing drilling fluid stratum oil identification plate and drilling oil layer identification method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2339801A1 (en) * | 1998-08-17 | 2000-02-24 | Numar Corporation | A method and apparatus for differentiating oil based mud filtrate from connate oil |
| CN1484044A (en) * | 2002-08-12 | 2004-03-24 | ʩ¬Ĭ��������˾ | Method for detecting hydrocarbon by comparing NMR response at different depths of investigation |
| US20050221495A1 (en) * | 2004-03-31 | 2005-10-06 | Bell Stephen A | Method and composition for improving NMR analysis of formation fluids |
| US20050272158A1 (en) * | 2004-01-04 | 2005-12-08 | Galford James E | Method and apparatus for detecting hydrocarbons with NMR logs in wells drilled with oil-based muds |
| WO2009015252A2 (en) * | 2007-07-26 | 2009-01-29 | Schlumberger Canada Limited | System and method for estimating formation characteristics in a well |
| CN101943669A (en) * | 2010-09-01 | 2011-01-12 | 苏州纽迈电子科技有限公司 | Method for measuring oil content of drilling fluid through low-field NMR (Nuclear Magnetic Resonance) |
| CN103046923A (en) * | 2011-10-13 | 2013-04-17 | 中国石油化工股份有限公司 | Method for fast recognizing low-resistivity oil and gas reservoirs through optimizing drilling mud |
| CN103362505A (en) * | 2012-04-10 | 2013-10-23 | 中国石油化工股份有限公司 | Method for judging and identifying drilling-encounter oil layer under condition that drilling fluid adding oil exists |
| CN103364427A (en) * | 2012-04-10 | 2013-10-23 | 中国石油化工股份有限公司 | Method for identifying in-place oil display in presence of drilling fluid solid-state fluorescent additive |
-
2014
- 2014-11-05 CN CN201410636058.5A patent/CN105604548B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2339801A1 (en) * | 1998-08-17 | 2000-02-24 | Numar Corporation | A method and apparatus for differentiating oil based mud filtrate from connate oil |
| CN1484044A (en) * | 2002-08-12 | 2004-03-24 | ʩ¬Ĭ��������˾ | Method for detecting hydrocarbon by comparing NMR response at different depths of investigation |
| US20050272158A1 (en) * | 2004-01-04 | 2005-12-08 | Galford James E | Method and apparatus for detecting hydrocarbons with NMR logs in wells drilled with oil-based muds |
| US20050221495A1 (en) * | 2004-03-31 | 2005-10-06 | Bell Stephen A | Method and composition for improving NMR analysis of formation fluids |
| WO2009015252A2 (en) * | 2007-07-26 | 2009-01-29 | Schlumberger Canada Limited | System and method for estimating formation characteristics in a well |
| CN101943669A (en) * | 2010-09-01 | 2011-01-12 | 苏州纽迈电子科技有限公司 | Method for measuring oil content of drilling fluid through low-field NMR (Nuclear Magnetic Resonance) |
| CN103046923A (en) * | 2011-10-13 | 2013-04-17 | 中国石油化工股份有限公司 | Method for fast recognizing low-resistivity oil and gas reservoirs through optimizing drilling mud |
| CN103362505A (en) * | 2012-04-10 | 2013-10-23 | 中国石油化工股份有限公司 | Method for judging and identifying drilling-encounter oil layer under condition that drilling fluid adding oil exists |
| CN103364427A (en) * | 2012-04-10 | 2013-10-23 | 中国石油化工股份有限公司 | Method for identifying in-place oil display in presence of drilling fluid solid-state fluorescent additive |
Non-Patent Citations (3)
| Title |
|---|
| MREx核磁共振测井评价轻中质油藏流体性质;赵秋来等;《江汉石油学院学报》;20040630;第26卷(第(增刊)期);第61-63页 |
| 利用磁共振技术检测钻井液含油量的方法探讨;许小琼等;《波谱学杂志》;20110630;第28卷(第2期);第237-243页 |
| 钻井液含油率核磁共振录井标定方法及应用;杨德勇;《录井工程》;20130331;第24卷(第1期);第27-30页 |
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