Supercharge Your Innovation With Domain-Expert AI Agents!

Stratum adaptation evaluation method for pushing type rotary steering system

A technology of rotary steering and evaluation method, which is applied in the field of oil drilling, and can solve problems such as evaluation of stratum adaptability of the pushable rotary steerable system, and achieve the effect of avoiding control failure and improving effectiveness and accuracy

Active Publication Date: 2020-08-07
BC P INC CHINA NAT PETROLEUM CORP +1
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to solve the problem in the prior art that the stratum adaptability of the push-by rotary steerable system cannot be evaluated

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
  • Stratum adaptation evaluation method for pushing type rotary steering system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] As a preferred embodiment of the present invention, with reference to the attached figure 1 , this example discloses:

[0024] A method for evaluating formation adaptation of a push-by rotary steerable system, characterized in that it includes the following steps:

[0025] A. Steps for obtaining the compressive strength of the formation: collect the downhole cores of the strata in the drilled well section, and perform a compressive strength compression test on the collected downhole cores to obtain the compressive strength σ of the formation c ;

[0026] B. Acquisition of the pressure of the rib acting on the well wall contact surface: According to the maximum thrust force P of the wing rib and the contact area A between the wing rib and the well wall of the pushing rotary steerable system, the action of the wing rib on the well wall contact surface is obtained pressure p c ;

[0027] C. Adaptability evaluation step: compare the actual build-up rate K of the drilled...

Embodiment 2

[0029] As another preferred embodiment of the present invention, with reference to the attached figure 1 , this example discloses:

[0030] A formation adaptation evaluation method of a push-by rotary steerable system, comprising the following steps:

[0031] A. Steps for obtaining the compressive strength of the formation: collect the downhole cores of the strata in the drilled well section, and perform a compressive strength compression test on the collected downhole cores to obtain the compressive strength σ of the formation c ; collect the downhole core of the drilled well section formation, process the downhole core into a cylindrical test sample with a diameter of 25 mm and a length of 50 mm, and grind the two ends of the test sample. The average value of the compressive strength of all test samples is taken as the compressive strength σ of the formation c ;

[0032] B. Acquisition of the pressure of the rib acting on the well wall contact surface: According to the ma...

Embodiment 3

[0035] As another preferred embodiment of the present invention, with reference to the attached figure 1 , this example discloses:

[0036] A formation adaptation evaluation method of a push-by rotary steerable system, comprising the following steps:

[0037] A. Steps for obtaining the compressive strength of the formation: collect the downhole cores of the strata in the drilled well section, and perform a compressive strength compression test on the collected downhole cores to obtain the compressive strength σ of the formation c ; collect the downhole core of the drilled well section formation, process the downhole core into a cylindrical test sample with a diameter of 25 mm and a length of 50 mm, and grind the two ends of the test sample. The average value of the compressive strength of all test samples is taken as the compressive strength σ of the formation c .

[0038] B. Acquisition of the pressure of the rib acting on the well wall contact surface: According to the maxi...

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 discloses a stratum adaptation evaluation method for a pushing type rotary steering system, and relates to the technical field of petroleum drilling. The method comprises the steps thatfirstly, a compressive strength compression test is conducted on a drilled well section stratum to obtain stratum compressive strength, then the pressure intensity of wing ribs of the pushing type rotary steering system acting on the well wall is determined, and a stratum adaptability evaluation database is established by comparing the actual build-up rate and the designed build-up rate of a drilled well section; and the adaptability of the pushing type rotary steering system to the same stratum is judged so as to evaluate whether the pushing type rotary steering system adapts to the well section stratum or not. The evaluation method is easy to operate, and the stratum adaptability of the pushing type rotary steering system can be well evaluated, so that the situation that normal well drilling construction is affected due to the fact that wing ribs are damaged when complex conditions occur underground is avoided.

Description

technical field [0001] The invention relates to the technical field of petroleum drilling, and more specifically relates to a stratum adaptation evaluation method of a push-on rotary steerable system. Background technique [0002] With the advancement of drilling technology, the lower drilling tool assembly for the purpose of controlling the empirical trajectory has developed rapidly. On the basis of the original ordinary drilling tools for increasing, decreasing and stabilizing, various types of steering drilling tools have been developed and promoted. , such as anti-deviation drilling tools with eccentric bend joints, anti-deflection drilling tools with flexible joints and anti-deflection drilling tools with variable stiffness between two stabilizers, etc., and other new bottom drilling tool assemblies. [0003] At the end of the 20th century, a rotary steerable drilling system was developed. This system completely abandoned the traditional slide steering method, and used ...

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): E21B49/00G06F30/20
CPCE21B49/00G06F30/20
Inventor 贾利春白璟陆灯云张继川李雷刘伟黄崇君邓虎陈东
Owner BC P INC CHINA NAT PETROLEUM CORP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com