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

Drilling method for double horizontal wells

A dual-horizontal well and horizontal well technology, applied in directional drilling, wellbore/well components, earth-moving drilling, etc., can solve the problem of large relative error of wellbore trajectory

Inactive Publication Date: 2019-05-28
PETROCHINA CO LTD
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to provide a drilling method for a dual-horizontal well, to solve the problem that the relative error between the wellbore trajectories of the horizontal section of the steam injection well and the production well is relatively large in the dual-horizontal well of the prior art

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
  • Drilling method for double horizontal wells

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0020] In the embodiment of the present application, the implementation of the present application will be described by taking the oil well site with a size of 80m×60m and the distance between the wellhead centers of the dual horizontal wells being about 20m as an example. The borehole trajectory of the horizontal well in the present application indicates the location of the centerline of the well pipe of the horizontal well. The target points in this application are virtual data points. When the target points are determined, the parameter data of all target points are input into the system software.

[0021] The main purpose of the present invention is to provide a drilling method for bi-hori...

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 provides a drilling method for double horizontal wells. The double horizontal wells comprise a first horizontal well and a second horizontal well. The drilling method comprises the following steps: determining the position of a wellhead of the first horizontal well and the position of the end, which is away from the wellhead, of a first horizontal well section of the first horizontalwell, and drilling the first horizontal well; determining the position of a wellhead of the second horizontal well and the position of the end, which is away from the wellhead, of a second horizontalwell section of the second horizontal well; and drilling the second horizontal well according to the position of the wellhead of the second horizontal well and the well track of the first horizontalwell. According to the technical scheme of the invention, the relative error between the well track of the horizontal section of the second horizontal well and the well track of the horizontal sectionof the first horizontal well can be controlled within a certain range.

Description

technical field [0001] The invention relates to the field of heavy oil exploitation, in particular to a drilling method for a double-horizontal well. Background technique [0002] In the process of petroleum development, there are abundant ultra-heavy oil reservoirs in the shallow buried area (100-450m), which need to be developed by using dual horizontal well groups, that is, a pair of parallel horizontal wells arranged vertically, respectively for steam injection wells and production wells. Inject high-temperature steam through the steam injection well to preheat the formation and crude oil and reduce the viscosity of crude oil. Crude oil is extracted from the ground through production wells. The distance between the steam injection well and the production well is 5m. In the prior art, during the initial drilling process, the drilling trajectory control system composed of directional motors, non-magnetic drill pipes, measurement-while-drilling and ground control devices...

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): E21B7/04E21B7/10E21B43/30
Inventor 罗增路宗羽刘颖彪张文波舒振辉王朝飞王雪刚鞠鹏飞
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