Method and device for establishing carbonate rock reservoir space model

A carbonate reservoir and space model technology, applied in the direction of seismic signal processing, etc., can solve the problem that the reservoir description cannot be obtained accurately, and achieve the effect of improving accuracy

Active Publication Date: 2012-09-19
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The main purpose of the embodiments of the present invention is to provide a method and device for establishing a carbonate reservoir space model, so as to solve the problem in the prior art that the description of the reservoir cannot be accurately obtained

Method used

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  • Method and device for establishing carbonate rock reservoir space model
  • Method and device for establishing carbonate rock reservoir space model
  • Method and device for establishing carbonate rock reservoir space model

Examples

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Embodiment 1

[0035] Embodiments of the present invention provide a method for establishing a carbonate reservoir space model, such as figure 2 As shown, the method includes:

[0036] Step 201, acquiring seismic longitudinal wave transmission signals;

[0037] Step 202, performing correction, amplitude preservation, and pre-stack time migration processing on the seismic longitudinal wave transmission signal;

[0038] Step 203, determining the abnormal seismic wave reflection area of ​​the target interval according to the processed seismic longitudinal wave transmission signal;

[0039] Step 204, determining the approximate location of the reservoir development according to the abnormal area of ​​seismic wave reflection in the target interval;

[0040] Step 205, according to the combined logging data and logging curve characteristics, determine the reservoir type and development characteristics near the wellbore of the target interval;

[0041] Step 206, according to the pressure recovery ...

example

[0076] 1. In a seismic three-dimensional work area in the Tarim Basin, by laying out signal excitation and receiving devices, collecting seismic longitudinal wave transmission signals;

[0077] 2. Various conventional corrections and amplitude-preserving processing of the recorded seismic signals, and pre-stack time migration,

[0078] 3. On the landmark interpretation platform, use the method of wave variable area to display the seismic section ( image 3 ), make a synthetic record based on the acoustic time difference of Well A, match the logging horizon with the seismic horizon, and complete the horizon interpretation on the seismic section: the bottom boundary of the Lower Silurian Kepingtag Formation TS 1k , the bottom boundary TO 3t , where TO 3t It is an unconformity surface, and carbonate reservoirs are mostly developed near this interface.

[0079] 4. In the Landmark seismic interpretation module, observe and inspect the seismic sections in the work area one by one...

Embodiment 2

[0084] The embodiment of the present invention also provides a device for establishing a carbonate reservoir space model, such as Figure 7 As shown, the device includes:

[0085] A seismic signal acquisition unit 1, configured to acquire seismic longitudinal wave transmission signals;

[0086] A seismic signal processing unit 2, configured to perform correction, amplitude preservation, and pre-stack time migration processing on the seismic longitudinal wave transmission signal;

[0087] An abnormal reflection area determining unit 3, configured to determine an abnormal seismic wave reflection area of ​​the target interval according to the processed seismic longitudinal wave transmission signal;

[0088] Reservoir development approximate position determination unit 4, used to determine the approximate position of reservoir development according to the abnormal seismic wave reflection area of ​​the target interval;

[0089] The near-well reservoir type determination unit 5 is...

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Abstract

The invention provides a method and device for establishing a carbonate rock reservoir space model. The method comprises the following steps: obtaining seismic longitudinal wave transmission signals; subjecting the seismic longitudinal wave transmission signals to correction, amplitude preservation and prestack time migration processing; determining a seismic wave reflection abnormality area in atarget interval according to the processed seismic longitudinal wave transmission signals; determining the approximate position for reservoir development according to the seismic wave reflection abnormality area in the target interval; determining the type and the developmental characteristic of the reservoir near to the wellbore of the target interval according to the combined logging data and the logging curve characteristic; determining the type and the developmental characteristic of the reservoir far from the wellbore of the target interval according to the pressure recovery well testingdata, the pressure recovery well testing pressure and the pressure reciprocal double logarithmic curve characteristic, and constructing the space model of the reservoir according to the approximate position for reservoir development, the type and the developmental characteristic of the reservoir near to the wellbore of the target interval and the type and the developmental characteristic of the reservoir far from the wellbore of the target interval. Due to the adoption of the method and device for establishing the carbonate rock reservoir space model, the reservoir description accuracy can beimproved.

Description

technical field [0001] The invention relates to oil and gas exploration and development technology, in particular to a method and device for establishing a carbonate reservoir space model. Background technique [0002] In recent years, carbonate rocks have gradually become an important field of oil and gas exploration. Domestic carbonate rock oil and gas fields are usually deeply buried and have complex reservoir genesis, including penecontemporaneous karstification, epigenetic karstification and burial karstification. There are various types of reservoirs formed under different geological backgrounds and different genesis, mainly including the following four types of reservoirs: vug type (such as Figure 1a shown), crack type (such as Figure 1b shown), crack-hole type (such as Figure 1c shown) and cave-type (such as Figure 1d shown). [0003] Carbonate reservoirs are highly heterogeneous. According to exploration practice, the reservoir types and fluid types of differ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28
Inventor 周波李明陶小晚唐俊伟陈志勇李启明
Owner PETROCHINA CO LTD
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