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

While-drilling down-hole measurement for substance in stratum

A material and formation technology, applied in the field of downhole measurement, can solve the problem of neglecting the cross flow in the well

Inactive Publication Date: 2009-07-22
PRAD RES & DEV LTD
View PDF7 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The prior art acknowledges the difficulty of maintaining a balance between the drilling mud and the formation, and the need to avoid mixing of drilling water from one level to another, but ignores the possibility of cross flow in the well

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
  • While-drilling down-hole measurement for substance in stratum
  • While-drilling down-hole measurement for substance in stratum
  • While-drilling down-hole measurement for substance in stratum

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] refer to figure 1 , shows a measurement-while-drilling device that may be used in a practical embodiment of the invention. [As used herein, unless otherwise indicated, measurement while drilling (also referred to as measurement while drilling or logging while drilling) is intended to include: Borehole Cords) for measurements in Earth boreholes. ] The platform and iron tower 10 are located above a borehole 11 formed in the earth using rotary drilling. A drill string 12 is suspended within the borehole and includes a drill bit 15 at its lower end. A drill string 12 and a drill bit 15 attached thereto are rotated by means of a rotary table 16 (powered by means not shown) engaging a drive drill rod 17 at the upper end of the drill string. The drill string hangs from a hook 18 attached to a moving block (not shown). The drive rod is connected to the hook via a swivel 19 which allows the drill string to rotate relative to the hook. Alternatively, the drill string 12 and ...

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 method which utilizes drilling fluid which flows downwards along with a drilling string and comes out along with the drill bit with rock debris produced by drilling stratum and then returns to the surface of the earth from an annular space between the drilling string and a drilling well to measure matters in the stratum at the periphery of an earth drilling well drilled by the drill bit at the end part of the drilling string, comprising the following steps: waiting for that any matter dissolved in the drilling mud is substantially balanced with any matter in the stratum rock debris; and then measuring matters dissolved in the drilling fluid underground.

Description

[0001] References to related applications [0002] The subject matter of the present application is related to that of co-pending U.S. Patent Application Serial No. 11 / 558,648, (File 60.1626 US NP) of A.B. Andrews, J. Tarvin, and K. Stephenson, filed on the same date as the present application, and Transferred to the same applicant as the current application. technical field [0003] The present invention relates to downhole measurements of material in earth formations surrounding each earth wellbore during the drilling process. Background technique [0004] Prior to the introduction of logging-while-drilling (LWD) tools and measurements, analysis of cuttings and mud-gas logs were the primary formation estimation techniques used during drilling. Mud-gas logging became less important with the advent of LWD, but it has recently regained prominence as operators have been able to extract valuable reservoir information not available with other relatively inexpensive methods. ...

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): E21B49/00
Inventor 肯尼思·E·斯蒂芬森杰弗里·A·塔文
Owner PRAD RES & DEV 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