CN109490949A - A kind of evaluating production capacity method after the pressure based on microseism explanation results - Google Patents
A kind of evaluating production capacity method after the pressure based on microseism explanation results Download PDFInfo
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- CN109490949A CN109490949A CN201811445123.0A CN201811445123A CN109490949A CN 109490949 A CN109490949 A CN 109490949A CN 201811445123 A CN201811445123 A CN 201811445123A CN 109490949 A CN109490949 A CN 109490949A
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- microseism
- production capacity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/28—Processing seismic data, e.g. analysis, for interpretation, for correction
- G01V1/282—Application of seismic models, synthetic seismograms
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/28—Processing seismic data, e.g. analysis, for interpretation, for correction
- G01V1/30—Analysis
- G01V1/306—Analysis for determining physical properties of the subsurface, e.g. impedance, porosity or attenuation profiles
Abstract
The invention discloses evaluating production capacity method after a kind of pressure based on microseism explanation results in micro-seismic technology field, the evaluation method is the following steps are included: pass through multiple groups detector array real-time monitoring micro-seismic event information；Processing is measured in real time to micro-seismic event information；According to microseism testing result, combines geological information and well head pressure monitoring information establishes discrete fracture network model；Production capacity after pressure is evaluated according to discrete fracture network model, this method can increase substantially weak seismic events detectability, fracturing effect can not only be evaluated, and monitoring result can also be fed back in water conservancy pressing crack construction in real time, be optimal fracturing effect at lower cost.
Description
Technical field
The invention discloses evaluating production capacity methods, specially micro-seismic technology after a kind of pressure based on microseism explanation results
Field.
Background technique
When oil gas water well brings in a well or Late reformation carries out hydraulic fracturing, in perforating site, when rapid raised pit shaft
Pressure is more than compressive strength of rock, and rock destroyed, and forms crack, when crack extends, will generate and a series of pass around
The microseism wave broadcast, microseism wave is disposed in multiple Monitor Sub-Station of Less around fractured well and receives, according to arriving for each substation microseism wave
The time difference is assured that microseism hypocentral location by calculating, and then learns orientation, length, height and the crustal stress of fractue spacing
The geologic parameters such as direction monitor in combination with well head pressure and can get the parameters such as clossing pressure, fracture width, the shake of microseism at present
Source spatial and temporal distributions monitoring information detectability is weak, and furthermore current micro seismic monitoring can only evaluate fracturing effect, can not feed back water conservancy
Pressing crack construction.
Summary of the invention
The purpose of the present invention is to provide a kind of evaluating production capacity methods after pressure based on microseism explanation results, on solving
It is weak to state the current microseism focus spatial and temporal distributions monitoring information detectability proposed in background technique, furthermore current micro seismic monitoring
The problem of fracturing effect can be evaluated, water conservancy pressing crack construction can not be fed back.To achieve the above object, the present invention provides following technology
Scheme: a kind of evaluating production capacity method after the pressure based on microseism explanation results, the evaluation method the following steps are included:
Step 1: pass through multiple groups detector array real-time monitoring micro-seismic event information；
Step 2: processing is measured in real time to the micro-seismic event information in step 1；
Step 3: according to the microseism testing result in step 2, combine geological information and well head pressure monitoring information is built
Vertical discrete fracture network model；
Step 4: production capacity after pressure is evaluated according to the discrete fracture network model in step 3.
Preferably, the information detection processing method used in the step 2 uses sample event scanning method.
Preferably, well head pressure monitoring information includes the information such as liquid filling pressure and well temperature in the step 3.
Preferably, geological information includes the geological informations such as natural fractures in the step 3.
Preferably, wave detector uses the geometric layout of the monitoring array for underground array layout in the step 1.
Compared with prior art, the beneficial effects of the present invention are:
1) this method is identified according to the waveform similarity of different event using existing seismic events and continuous wave record
Weak seismic events further carry out accurate relative positioning to the weak seismic events detected, reduce anisotropic velocity mould
Influence of the type to microseism positioning accuracy can increase substantially weak seismic events detectability, keep lower event wrong report
While rate, microseism number is improved；
2) this method can not only evaluate fracturing effect, and real-time monitoring result can also be fed back and apply in water conservancy pressure break
Work is optimal fracturing effect at lower cost.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is micro-seismic monitoring data result of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The present invention provides a kind of technical solution referring to FIG. 1-2: production capacity is commented after a kind of pressure based on microseism explanation results
Valence method, the evaluation method the following steps are included:
Step 1: by multiple groups detector array real-time monitoring micro-seismic event information, in hydraulic fracturing work progress, pressure
Radiation transmitting will constantly be carried out in stratum along major fracture direction around by splitting energy, receive power, the side of underground elastic wave signal
To and the parameters such as sweep area；
Step 2: being measured in real time processing to the micro-seismic event information in step 1, and micro-seismic event earthquake magnitude is small, frequency
Rate is high, and Earth's absorption and attenuation is stronger, and it is low to will lead to most of microseism Signal-to-Noise, as a figure is not use sample thing in Fig. 2
Using shown in sample event scanning method, the micro-seismic event spatial distribution characteristic that the two obtains is basic for part scan method and b figure
Unanimously, but microseism number can be improved several times；
Step 3: according to the microseism testing result in step 2, combine geological information and well head pressure monitoring information is built
Vertical discrete fracture network model, by model it can be seen that the geology such as microseism hypocentral location, the range of fractue spacing, length, height
It is wide to obtain clossing pressure, liquid filter arrow coefficient, fluid efficiency and crack in combination with well head pressure monitoring and geological information for parameter
The parameters such as degree, furthermore by joint well head pressure monitoring information, on the one hand micro seismic monitoring being capable of real-time monitoring crack dynamic in real time for energy
Extension and extension, to instruct Optimum Hydraulic pressing crack construction, can be adjusted, another party according to real-time micro seismic monitoring result
Face, the expansible possible connection natural fault of hydraulically created fracture, higher-pressure region, water-bearing layer etc., triggers big earthquake magnitude event, may be to ring
Border pollutes or destroys, and additionally helps the well location layout and pressing crack construction design of new well, targetedly improves waterpower
Pressing crack construction technique and complete well strategy, reduce exploration and evaluation well amount needs quantity, accelerate exploration and development process；
Step 4: production capacity after pressure is evaluated according to the discrete fracture network model in step 3, before hydraulic fracturing
Geometry filtrational resistance, oil production and filtrational resistance etc. are evaluated afterwards.
Wherein, the information detection processing method used in step 2 uses sample event scanning method, well head in step 3
Pressure monitoring information includes the information such as liquid filling pressure and well temperature, and geological information includes the geological informations such as natural fractures in step 3,
Wave detector uses the geometric layout of the monitoring array for underground array layout in step 1.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of evaluating production capacity method after pressure based on microseism explanation results, it is characterised in that: the evaluation method include with
Lower step:
Step 1: pass through multiple groups detector array real-time monitoring micro-seismic event information；
Step 2: processing is measured in real time to the micro-seismic event information in step 1；
Step 3: according to the microseism testing result in step 2, combine geological information and well head pressure monitoring information establish from
Dissipate fracture network model of analogous outcrop；
Step 4: production capacity after pressure is evaluated according to the discrete fracture network model in step 3.
2. evaluating production capacity method after a kind of pressure based on microseism explanation results according to claim 1, it is characterised in that:
The information detection processing method used in the step 2 uses sample event scanning method.
3. evaluating production capacity method after a kind of pressure based on microseism explanation results according to claim 1, it is characterised in that:
Well head pressure monitoring information includes the information such as liquid filling pressure and well temperature in the step 3.
4. evaluating production capacity method after a kind of pressure based on microseism explanation results according to claim 1, it is characterised in that:
Geological information includes the geological informations such as natural fractures in the step 3.
5. evaluating production capacity method after a kind of pressure based on microseism explanation results according to claim 1, it is characterised in that:
Wave detector uses the geometric layout of the monitoring array for underground array layout in the step 1.
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| CN110080753A (en) * | 2019-04-10 | 2019-08-02 | 中国石油大学(北京) | Evaluation method and device are transformed in oil shale formation In Situ Heating based on microseism parameter |
| CN111722285A (en) * | 2019-03-22 | 2020-09-29 | 中国石油化工股份有限公司 | Post-compression shale gas reservoir modeling method based on microseism data |
| CN112987106A (en) * | 2021-02-22 | 2021-06-18 | 河南理工大学 | Method for evaluating productivity potential of coal-bed gas well based on microseism static monitoring |
| CN113945966A (en) * | 2021-05-25 | 2022-01-18 | 中国矿业大学(北京) | Method and device for constructing artificial fracturing fracture network |
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| CN112987106A (en) * | 2021-02-22 | 2021-06-18 | 河南理工大学 | Method for evaluating productivity potential of coal-bed gas well based on microseism static monitoring |
| CN112987106B (en) * | 2021-02-22 | 2023-05-16 | 河南理工大学 | Coalbed methane well productivity potential evaluation method based on microseism static monitoring |
| CN113945966A (en) * | 2021-05-25 | 2022-01-18 | 中国矿业大学(北京) | Method and device for constructing artificial fracturing fracture network |
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Application publication date: 20190319 |