Calculating method for SAGD (Steam-Assisted Gravity Drainage) double-horizontal well drilling electromagnetic distance measurement guide
A bi-horizontal well and calculation method technology, applied in the direction of using electromagnetic means, using electrical devices, measuring, etc., can solve problems such as difficulty in satisfying complex structure wells, inability to directly measure the distance of adjacent wells, and confidentiality of core technologies
Active Publication Date: 2011-04-06
CHINA UNIV OF PETROLEUM (BEIJING)
View PDF4 Cites 29 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
At present, the measurement-while-drilling tools commonly used in China cannot directly measure the distance between adjacent wells, so it is difficult to meet the special requirements of detection-while-drilling for the distance between adjacent
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0036] The present invention can determine the relative position of the horizontal section of the SAGD double horizontal well based on the magnetic sub-section signal received by the probe, and the calculation method includes the following main steps:
[0037] Step 1, extract the well condition information of production wells and injection wells. Wellbore trajectory measurement information of production wells and injection wells; wellhead coordinates of production wells and injection wells; drill pad plane height (KB) and ground elevation (GL) of production wells and injection wells; wellbore structure of production wells.
[0038] Step 2, processing the extracted well condition information of the production well and the injection well.
[0039] After extracting the well condition information of the production well and the injection well, a global coordinate system is established with the position of the injection well head as a reference, and then the well head coordinates of...
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
Login to view more Abstract
The invention relates to a calculating method for SAGD (Steam-Assisted Gravity Drainage) double-horizontal well drilling electromagnetic distance measurement guide, which mainly comprises the steps of acquired data processing, calculation of rotating magnetic short section far-field magnetic induction intensity, inclination measurement and calculation of well hole track, neighboring well paralleldistance calculation, and the like. In the extracting process of unconventional oil and gas resources, such as thickened oil, natural gas hydrate, and the like, the precise control on the SAGD double-horizontal well horizontal section distance is one of the key technical links. In the invention, as for the application background, an approach for combining an inclination measurement and calculation method of the well hole track and drilling electromagnetic detection is adopted for monitoring a space relative position relationship of the double-horizontal well horizontal section in real time. Firstly, the distance of the double-horizontal well horizontal sections is obtained by utilizing a magnetic signal generated by a rotating magnetic short section received by a probe; and then, the calculating method which can confirm the relative orientation of the double-horizontal well horizontal section is invented by utilizing the inclination measurement and calculation of the well hole track and the drilling electromagnetic detection signal. The invention not only can be applied to the SAGD double-horizontal well guide drilling well detection but also can be applied to multiwell collision preventing and three-dimensional hinder-crossing monitoring calculation.
Description
technical field [0001] The invention relates to an electromagnetic detection and calculation method while drilling for the spacing between adjacent wells of dual horizontal wells, which is one of the technical keys for steerable drilling control of SAGD dual horizontal wells, and belongs to the technical field of petroleum engineering. Background technique [0002] In the exploitation of oil, natural gas and coalbed methane, the drilling trajectories of complex structure wells such as double horizontal wells, connecting wells and U-shaped wells are complex, and the directional control is difficult, requiring accurate detection of the distance between adjacent wells while drilling. At present, the commonly used measurement-while-drilling tools in China cannot directly measure the distance of adjacent wells, so it is difficult to meet the special requirements of detection while drilling the distance of adjacent wells in complex structure wells. In addition, although foreign co...
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
Login to view more IPC IPC(8): E21B47/00E21B47/12E21B47/09G01B7/14
Inventor 高德利刁斌斌闫永维
Owner CHINA UNIV OF PETROLEUM (BEIJING)
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Try Eureka
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap