Wellbore trajectory control method

A wellbore trajectory and control method technology, which is applied in the field of oil drilling, can solve problems such as difficult solutions, inability to answer constraint equations, and can not well meet the wellbore trajectory design and control of oil and gas drilling.

Active Publication Date: 2012-04-25
BC P INC CHINA NAT PETROLEUM CORP +2
View PDF2 Cites 48 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the technical problem of 3D wellbore trajectory design under the condition of satisfying the position of the target point and the direction of entry is solved by solving nonlinear equations and iterative methods, but theoretically it is impossible to answer the question of whether the constraint equation has a solution, and The solution calculation is cumbersome, difficult to solve, and cannot well meet the requirements of oil and gas drilling for wellbore trajectory design and control

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Wellbore trajectory control method
  • Wellbore trajectory control method
  • Wellbore trajectory control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0221] The design target data of a 3D horizontal well are: the starting point A coordinates (123.70, -365.19, 937.67), the ending point B coordinates (123.70, -1306.90, 927.77), the horizontal section length is 941.73m, the inclination angle is 90.48°, the azimuth The angle is 270.00°. The wellbore trajectory is designed to land precisely at the starting point A.

[0222] Design to take K 1 = K 2 =6° / 30m,L h =80m,L 2 =941.73m, the design start point is the wellhead, the target point is the end point of the horizontal section, the design result L 1 =593.704m, see Table 1 and Table 2 for the design segment data and detailed data.

[0223] Table 1. Sectional data of 3D horizontal well design

[0224]

[0225] Table 2 Detailed data of 3D horizontal well design

[0226]

[0227] It can be seen from Table 2 that in the second arc section, as the well depth changes, the installation angle of the wellbore trajectory control tool will gradually change, and the installation...

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 relates to a wellbore trajectory control method which is mainly used for solving the problem that the existing wellbore trajectory control method can not well meet the design and control requirements of oil and gas drilling on a wellbore trajectory. The wellbore trajectory control method is characterized by comprising two parts, namely the design of the wellbore trajectory and the control of the wellbore trajectory. By adopting the method, the design and control requirements on the wellbore trajectory which can simultaneously limit the position and the direction of a target point under multi-constraint conditions can be met; and the design and control method is simple and practical, the optimization and the control of the wellbore trajectory are easy, the design efficiency and the quality of a well body can be improved, the time and the cost of drilling operation can be reduced, and the purposes of safe, fast and high-quality drilling and completion operations can be realized.

Description

Technical field: [0001] The invention relates to the field of oil drilling, in particular to a method for controlling well trajectory. Background technique: [0002] With the development of directional drilling technology, higher requirements are put forward for the design and control of borehole trajectory. The wellbore trajectories of sidetracking wells, horizontal wells and geosteering drilling are all three-dimensional, and the position and direction of the landing point need to be limited. Only by strictly following the position and direction requirements of the target point for trajectory design and control can we ensure that the vector hits the target and effectively drills target layer. [0003] There are different design requirements and constraints for the wellbore trajectory design and control of different types of wells. For example, three-dimensional extended-reach horizontal wells are characterized by large stabilizing angles and long stabilizing sections, an...

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 Applications(China)
IPC IPC(8): E21B7/04
Inventor 唐雪平苏义脑盛利民窦修荣邓乐王家进王鹏高文凯
Owner BC P INC CHINA NAT PETROLEUM CORP
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
PatSnap group products

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