Effect of Pulsed Jet on Pore Pressure of Deep Formation Rock-Reference-Cited by-同舟云学术

Effect of Pulsed Jet on Pore Pressure of Deep Formation Rock

Published:2021-12-29 Issue: Volume:2021 Page:1-9
ISSN:1875-9203
Container-title:Shock and Vibration
language:en
Short-container-title:Shock and Vibration

Author:

Wang Yong¹^ORCID,Ni Hongjian¹^ORCID,Wang Ruihe¹,Lei Peng²,Huang Bin¹,Liu Shubin¹,Li Ning³

Affiliation:

1. School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China

2. Well Testing Branch of CNPC Bohai Drilling Engineering Company Limited, Langfang 065007, China

3. PetroChina Tarim Oilfield Company, Korla 841000, China

Abstract

Pulsed jet significantly affects the pore pressure of deep formation and then affects the mechanical ROP. In this paper, the effect of jet pulsation on deep pore pressure in the formation is studied by the finite element method. Under the pulsed jet, the maximum relative negative pressure is along the wellbore axis, and the farther it is to the borehole axis, the smaller the relative negative pressure is. With the increase of pulse frequency, the relative negative pressure increases and the maximum point of relative negative pressure moves upward. The optimum pulse frequency is from 50 Hz to 500 Hz. There is a linear relationship between pulse amplitude and relative negative pressure.

Funder

Major Science and Technology Project of the CNPC

Publisher

Hindawi Limited

Subject

Mechanical Engineering,Mechanics of Materials,Geotechnical Engineering and Engineering Geology,Condensed Matter Physics,Civil and Structural Engineering

Link

http://downloads.hindawi.com/journals/sv/2021/2217787.pdf

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