Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A method for identifying micro-eroded grooves in uplift areas

An identification method, a technology of erosion trenches, applied in seismology, instruments, measuring devices, etc., can solve problems such as inability to show obvious, difficult to identify in seismic exploration, etc.

Active Publication Date: 2019-02-15
PETROCHINA CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Existing technology can only identify large erosion trenches, but for tiny erosion trenches with a width of several hundred meters (for example, less than or equal to 900 meters) and a depth of about 10 meters to 60 meters, due to the impact of seismic resolution , it does not show obvious above-mentioned features on the seismic profile, making it difficult to be identified by seismic exploration

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] Taking the micro-eroded trench AA with a width of 456 meters and a depth of 46 meters as an example, firstly, the micro-eroded trench AA is identified according to the identification method described in the embodiment of the present invention, and then a well is drilled on the micro-eroded trench AA 5 mouths.

[0069] Five wells were deployed in different parts (center and side edge) of the micro-eroded trench, and the thickness of the drilled formations were: 46 meters in A1 well, 40 meters in A2 well, 40 meters in A3 well, 22 meters in A4 well, and 22 meters in A5 well. Well 10 meters. It can be seen that after implementing the identification method provided by the embodiment of the present invention, the coincidence rate of the thickness of the drilled micro-erosion groove and the prediction reaches 100%.

Embodiment 2

[0071] Taking the micro-eroded trench BB with a width of 298 meters and a depth of 40 meters as an example, firstly, the micro-eroded trench BB is identified according to the identification method described in the embodiment of the present invention, and then a well is drilled on the micro-eroded trench BB Bit 1 mouthful. Well B1 was deployed in the center of the eroded trench and encountered a formation thickness of 40 meters. It can be seen that after implementing the identification method provided by the embodiment of the present invention, the coincidence rate of the thickness of the drilled micro-erosion groove and the prediction reaches 100%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method of recognizing a tiny erosion groove in a raised region, and belongs to the field of geological engineering. The method includes the steps of selecting a standard well for each of drilled wells inside and outside a large erosion groove in a raised region, and obtaining logging information of the standard wells; establishing interval velocity models for the inside and outside of the large erosion groove respectively according the logging information; combining the logging information and three-dimensional seismic data to obtain an initial synthetic seismogram, and conducting a calibration analysis of the initial synthetic seismogram using the interval velocity models to obtain a final synthetic seismogram; recognizing the top boundary velocity and bottom boundary plane of uncomformity velocity of the inside and outside of the large erosion groove according to the final synthetic seismogram so as to trace seismic reflecting boundary events of the top boundary and bottom boundary plane of uncomformity of the inside and outside of the large erosion groove in the raised region isochronally, and connecting the events of the same time to form a seismic data volume; and slicing the seismic data volume isochronally by using the stratigraphic slice technology and recognizing a tiny erosion groove.

Description

technical field [0001] The invention relates to the field of geological engineering, in particular to a method for identifying micro-eroded grooves in uplift areas. Background technique [0002] Erosion grooves are generally developed in the uplift area (the area where the formation is partially uplifted due to horizontal stress extrusion). Wait. Erosion trenches can be used not only as the main channel for sediment migration, but also as the main place for clastic sediment accumulation. Moreover, based on its geological characteristics, it is easy to form various subtle reservoirs in erosion trenches, such as lens-type lithologic reservoirs, lateral pinch-out lithologic reservoirs, stratigraphic overlapping lithologic reservoirs, fault- Lithological composite oil and gas reservoirs, etc. It can be seen that the research on the erosion grooves in the uplift area is of great significance. Based on this, it is necessary to identify the erosion grooves in the uplift area fir...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/28G01V1/30G01V1/36
CPCG01V1/282G01V1/306G01V1/362G01V2210/52G01V2210/624G01V2210/665
Inventor 袁淑琴熊金良祝文亮肖敦清岳云福柴公权周淑慧孔德博赵宇超周凤春李忠梅陈璞
Owner PETROCHINA CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com