Three-dimensional (3D) horizontal well borehole track controlling method

A control method and wellbore trajectory technology, applied in wellbore/well components, directional drilling, earth-moving drilling, etc., can solve the problem of high cost and achieve the effect of low cost, easy construction and easy operation

Active Publication Date: 2015-04-01
CHINA PETROLEUM & CHEM CORP +1
View PDF7 Cites 37 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is a method for controlling the borehole trajectory of a three-dimensional horizontal well, so as to solve the problem t

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
  • Three-dimensional (3D) horizontal well borehole track controlling method
  • Three-dimensional (3D) horizontal well borehole track controlling method
  • Three-dimensional (3D) horizontal well borehole track controlling method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0039] The specific embodiments of the present invention will be further described below in conjunction with the drawings.

[0040] The following takes a three-dimensional horizontal well in the Jinghe Oilfield of the Ordos Basin as an example to describe in detail the specific implementation process of the three-dimensional horizontal well trajectory control method of the present invention. This well uses ZJ40 Roman drilling rig, conventional "screw drilling tool + MWD measurement system", F-1300 drilling pump, and no top drive.

[0041] 1. According to the drilling geological design, carry out the drilling engineering design for the horizontal well. This embodiment adopts a six-segment well trajectory, including one-dimensional vertical well section, two-dimensional increase deflection section, three-dimensional well section, two-dimensional stable deflection section, two-dimensional increase deflection section and two-dimensional horizontal section, among which horizontal well t...

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 three-dimensional (3D) horizontal well borehole track controlling method, and belongs to the technical field of oil and gas well drilling. The method comprises the steps of determining well drilling parameters according to well drilling equipment and formation lithology; measuring a borehole parameter by measurement-while-drilling tools, revising a formation vertical depth by using geological logging, designing points to be drilled according to known measuring points, regarding the vertical depth as a control target, continuously revising a 3D well section track until drilling to a 3D well section end turning direction; revising a target entering point vertical depth by using geological logging again, performing two-dimensional well drilling to a target point, and performing horizontal section well drilling by using reservoir lithology and horizontal section well inclining determination drilling tool assembly. The 3D horizontal well borehole track controlling method disclosed by the invention has the advantages that firstly the conventional well drilling and directional equipment is used, the cost is quite low, and promotional values are available; secondly, geosteering is performed by using conventional logging, the track is revised continuously, and the shooting precision is greatly improved; thirdly, the design and construction are integrated, the site directional construction is operated easily, and directional engineers construct conveniently.

Description

technical field [0001] The invention relates to a three-dimensional horizontal well borehole trajectory control method, which belongs to the technical field of oil and gas drilling. Background technique [0002] In the field of petroleum and natural gas, low porosity, low permeability and low pressure reservoirs are called "three low" reservoirs, which are characterized by low single well production. Sinopec North China Branch Jinghe Oilfield, Honghe Oilfield, Weibei Oilfield Both the Heluohe Oilfield belong to this type of "three-low" oil reservoirs. For example, the Jinghe Oilfield has a porosity of about 10%, a permeability of less than 0.5mD, an average pressure coefficient of less than 0.95, and an average horizontal well production of 3.5 tons per day. Therefore, it is necessary to save investment as much as possible during development and improve development efficiency. In order to save investment, the development of cluster horizontal wells is adopted, that is, more...

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
IPC IPC(8): E21B7/04E21B47/022
CPCE21B7/04E21B47/022E21B47/04
Inventor 闫吉曾
Owner CHINA PETROLEUM & CHEM 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